diff --git a/configs/msmsteppe/msmsteppe.mk b/configs/msmsteppe/msmsteppe.mk
index e7158fa..7027c5c 100644
--- a/configs/msmsteppe/msmsteppe.mk
+++ b/configs/msmsteppe/msmsteppe.mk
@@ -231,6 +231,10 @@
 PRODUCT_PROPERTY_OVERRIDES += \
 vendor.audio.adm.buffering.ms=2
 
+#enable AAC frame ctl for A2DP sinks
+PRODUCT_PROPERTY_OVERRIDES += \
+persist.vendor.bt.aac_frm_ctl.enabled=true
+
 # for HIDL related packages
 PRODUCT_PACKAGES += \
     android.hardware.audio@2.0-service \
diff --git a/configs/trinket/trinket.mk b/configs/trinket/trinket.mk
index bcf970f..ceaf4a3 100644
--- a/configs/trinket/trinket.mk
+++ b/configs/trinket/trinket.mk
@@ -232,6 +232,10 @@
 PRODUCT_PROPERTY_OVERRIDES += \
 vendor.audio.adm.buffering.ms=2
 
+#enable AAC frame ctl for A2DP sinks
+PRODUCT_PROPERTY_OVERRIDES += \
+persist.vendor.bt.aac_frm_ctl.enabled=true
+
 # for HIDL related packages
 PRODUCT_PACKAGES += \
     android.hardware.audio@2.0-service \
diff --git a/hal/Android.mk b/hal/Android.mk
index 82eb510..3fcd87e 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -182,6 +182,7 @@
 LOCAL_CFLAGS += -DAUDIO_EXTN_FORMATS_ENABLED
 endif
 
+
 ifeq ($(strip $(AUDIO_FEATURE_ENABLED_SPKR_PROTECTION)),true)
     LOCAL_CFLAGS += -DSPKR_PROT_ENABLED
     LOCAL_SRC_FILES += audio_extn/spkr_protection.c
@@ -340,6 +341,14 @@
 	libexpat
 endif
 
+ifeq ($(strip $(AUDIO_FEATURE_ENABLED_QAP)),true)
+LOCAL_CFLAGS += -DQAP_EXTN_ENABLED -Wno-tautological-pointer-compare
+LOCAL_SRC_FILES += audio_extn/qap.c
+LOCAL_C_INCLUDES += $(TARGET_OUT_HEADERS)/mm-audio/qap_wrapper/
+LOCAL_HEADER_LIBRARIES += audio_qaf_headers
+LOCAL_SHARED_LIBRARIES += libqap_wrapper liblog
+endif
+
 ifneq ($(strip $(TARGET_USES_AOSP_FOR_AUDIO)),true)
     LOCAL_SHARED_LIBRARIES += libtinycompress_vendor
 else
diff --git a/hal/audio_extn/audio_extn.c b/hal/audio_extn/audio_extn.c
index def3b50..f893b3f 100644
--- a/hal/audio_extn/audio_extn.c
+++ b/hal/audio_extn/audio_extn.c
@@ -1185,6 +1185,8 @@
    audio_extn_passthru_set_parameters(adev, parms);
    audio_extn_ext_disp_set_parameters(adev, parms);
    audio_extn_qaf_set_parameters(adev, parms);
+   if (audio_extn_qap_is_enabled())
+       audio_extn_qap_set_parameters(adev, parms);
    if (adev->offload_effects_set_parameters != NULL)
        adev->offload_effects_set_parameters(parms);
    audio_extn_set_aptx_dec_bt_addr(adev, parms);
diff --git a/hal/audio_extn/audio_extn.h b/hal/audio_extn/audio_extn.h
index 38ae757..c847291 100644
--- a/hal/audio_extn/audio_extn.h
+++ b/hal/audio_extn/audio_extn.h
@@ -802,6 +802,59 @@
 #define audio_extn_is_qaf_stream(out)                                   (0)
 #endif
 
+
+#ifdef QAP_EXTN_ENABLED
+/*
+ * Helper funtion to know if HAL QAP extention is enabled or not.
+ */
+bool audio_extn_qap_is_enabled();
+/*
+ * QAP HAL extention init, called during bootup/HAL device open.
+ * QAP library will be loaded in this funtion.
+ */
+int audio_extn_qap_init(struct audio_device *adev);
+void audio_extn_qap_deinit();
+/*
+ * if HAL QAP is enabled and inited succesfully then all then this funtion
+ * gets called for all the open_output_stream requests, in other words
+ * the core audio_hw->open_output_stream is overridden by this funtion
+ */
+int audio_extn_qap_open_output_stream(struct audio_hw_device *dev,
+                                   audio_io_handle_t handle,
+                                   audio_devices_t devices,
+                                   audio_output_flags_t flags,
+                                   struct audio_config *config,
+                                   struct audio_stream_out **stream_out,
+                                   const char *address __unused);
+void audio_extn_qap_close_output_stream(struct audio_hw_device *dev __unused,
+                                        struct audio_stream_out *stream);
+/*
+ * this funtion is how HAL QAP extention gets to know the device connection/disconnection
+ */
+int audio_extn_qap_set_parameters(struct audio_device *adev, struct str_parms *parms);
+int audio_extn_qap_out_set_param_data(struct stream_out *out,
+                           audio_extn_param_id param_id,
+                           audio_extn_param_payload *payload);
+int audio_extn_qap_out_get_param_data(struct stream_out *out,
+                             audio_extn_param_id param_id,
+                             audio_extn_param_payload *payload);
+/*
+ * helper funtion.
+ */
+bool audio_extn_is_qap_stream(struct stream_out *out);
+#else
+#define audio_extn_qap_is_enabled()                                     (0)
+#define audio_extn_qap_deinit()                                         (0)
+#define audio_extn_qap_close_output_stream         adev_close_output_stream
+#define audio_extn_qap_open_output_stream           adev_open_output_stream
+#define audio_extn_qap_init(adev)                                       (0)
+#define audio_extn_qap_set_parameters(adev, parms)                      (0)
+#define audio_extn_qap_out_set_param_data(out, param_id, payload)       (0)
+#define audio_extn_qap_out_get_param_data(out, param_id, payload)       (0)
+#define audio_extn_is_qap_stream(out)                                   (0)
+#endif
+
+
 #ifdef AUDIO_EXTN_BT_HAL_ENABLED
 int audio_extn_bt_hal_load(void **handle);
 int audio_extn_bt_hal_open_output_stream(void *handle, int in_rate, audio_channel_mask_t channel_mask, int bit_width);
diff --git a/hal/audio_extn/qap.c b/hal/audio_extn/qap.c
new file mode 100644
index 0000000..0625737
--- /dev/null
+++ b/hal/audio_extn/qap.c
@@ -0,0 +1,3137 @@
+/*
+ * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define LOG_TAG "audio_hw_qap"
+#define LOG_NDEBUG 0
+#define VERY_VERY_VERBOSE_LOGGING
+#ifdef VERY_VERY_VERBOSE_LOGGING
+#define DEBUG_MSG_VV DEBUG_MSG
+#else
+#define DEBUG_MSG_VV(a...) do { } while(0)
+#endif
+
+#define DEBUG_MSG(arg,...) ALOGE("%s: %d:  " arg, __func__, __LINE__, ##__VA_ARGS__)
+#define ERROR_MSG(arg,...) ALOGE("%s: %d:  " arg, __func__, __LINE__, ##__VA_ARGS__)
+
+#define COMPRESS_OFFLOAD_NUM_FRAGMENTS 2
+#define COMPRESS_PASSTHROUGH_DDP_FRAGMENT_SIZE 4608
+
+#define QAP_DEFAULT_COMPR_AUDIO_HANDLE 1001
+#define QAP_DEFAULT_COMPR_PASSTHROUGH_HANDLE 1002
+#define QAP_DEFAULT_PASSTHROUGH_HANDLE 1003
+
+#define COMPRESS_OFFLOAD_PLAYBACK_LATENCY 300
+
+#define MIN_PCM_OFFLOAD_FRAGMENT_SIZE 512
+#define MAX_PCM_OFFLOAD_FRAGMENT_SIZE (240 * 1024)
+
+#define DIV_ROUND_UP(x, y) (((x) + (y) - 1)/(y))
+#define ALIGN(x, y) ((y) * DIV_ROUND_UP((x), (y)))
+
+/* Pcm input node buffer size is 6144 bytes, i.e, 32msec for 48000 samplerate */
+#define QAP_MODULE_PCM_INPUT_BUFFER_LATENCY 32
+
+#define MS12_PCM_OUT_FRAGMENT_SIZE 1536 //samples
+#define MS12_PCM_IN_FRAGMENT_SIZE 1536 //samples
+
+#define DD_FRAME_SIZE 1536
+#define DDP_FRAME_SIZE DD_FRAME_SIZE
+/*
+ * DD encoder output size for one frame.
+ */
+#define DD_ENCODER_OUTPUT_SIZE 2560
+/*
+ * DDP encoder output size for one frame.
+ */
+#define DDP_ENCODER_OUTPUT_SIZE 4608
+
+/*********TODO Need to get correct values.*************************/
+
+#define DTS_PCM_OUT_FRAGMENT_SIZE 1024 //samples
+
+#define DTS_FRAME_SIZE 1536
+#define DTSHD_FRAME_SIZE DTS_FRAME_SIZE
+/*
+ * DTS encoder output size for one frame.
+ */
+#define DTS_ENCODER_OUTPUT_SIZE 2560
+/*
+ * DTSHD encoder output size for one frame.
+ */
+#define DTSHD_ENCODER_OUTPUT_SIZE 4608
+/******************************************************************/
+
+/*
+ * QAP Latency to process buffers since out_write from primary HAL
+ */
+#define QAP_COMPRESS_OFFLOAD_PROCESSING_LATENCY 18
+#define QAP_PCM_OFFLOAD_PROCESSING_LATENCY 48
+
+//TODO: Need to handle for DTS
+#define QAP_DEEP_BUFFER_OUTPUT_PERIOD_SIZE 1536
+
+#include <stdlib.h>
+#include <pthread.h>
+#include <errno.h>
+#include <dlfcn.h>
+#include <unistd.h>
+#include <sys/resource.h>
+#include <sys/prctl.h>
+#include <cutils/properties.h>
+#include <cutils/str_parms.h>
+#include <cutils/log.h>
+#include <cutils/atomic.h>
+#include "audio_utils/primitives.h"
+#include "audio_hw.h"
+#include "platform_api.h"
+#include <platform.h>
+#include <system/thread_defs.h>
+#include <cutils/sched_policy.h>
+#include "audio_extn.h"
+#include <qti_audio.h>
+#include <qap_api.h>
+#include "sound/compress_params.h"
+#include "ip_hdlr_intf.h"
+#include "dolby_ms12.h"
+
+#ifdef DYNAMIC_LOG_ENABLED
+#include <log_xml_parser.h>
+#define LOG_MASK HAL_MOD_FILE_QAF
+#include <log_utils.h>
+#endif
+
+//TODO: Need to remove this.
+#define QAP_OUTPUT_SAMPLING_RATE 48000
+
+#ifdef QAP_DUMP_ENABLED
+FILE *fp_output_writer_hdmi = NULL;
+#endif
+
+//Types of MM module, currently supported by QAP.
+typedef enum {
+    MS12,
+    DTS_M8,
+    MAX_MM_MODULE_TYPE,
+    INVALID_MM_MODULE
+} mm_module_type;
+
+typedef enum {
+    QAP_OUT_TRANSCODE_PASSTHROUGH = 0, /* Transcode passthrough via MM module*/
+    QAP_OUT_OFFLOAD_MCH, /* Multi-channel PCM offload*/
+    QAP_OUT_OFFLOAD, /* PCM offload */
+
+    MAX_QAP_MODULE_OUT
+} mm_module_output_type;
+
+typedef enum {
+    QAP_IN_MAIN = 0, /* Single PID Main/Primary or Dual-PID stream */
+    QAP_IN_ASSOC,    /* Associated/Secondary stream */
+    QAP_IN_PCM,      /* PCM stream. */
+    QAP_IN_MAIN_2,   /* Single PID Main2 stream */
+    MAX_QAP_MODULE_IN
+} mm_module_input_type;
+
+typedef enum {
+    STOPPED,    /*Stream is in stop state. */
+    STOPPING,   /*Stream is stopping, waiting for EOS. */
+    RUN,        /*Stream is in run state. */
+    MAX_STATES
+} qap_stream_state;
+
+struct qap_module {
+    audio_session_handle_t session_handle;
+    void *qap_lib;
+    void *qap_handle;
+
+    /*Input stream of MM module */
+    struct stream_out *stream_in[MAX_QAP_MODULE_IN];
+    /*Output Stream from MM module */
+    struct stream_out *stream_out[MAX_QAP_MODULE_OUT];
+
+    /*Media format associated with each output id raised by mm module. */
+    qap_session_outputs_config_t session_outputs_config;
+    /*Flag is set if media format is changed for an mm module output. */
+    bool is_media_fmt_changed[MAX_QAP_MODULE_OUT];
+    /*Index to be updated in session_outputs_config array for a new mm module output. */
+    int new_out_format_index;
+
+    //BT session handle.
+    void *bt_hdl;
+
+    float vol_left;
+    float vol_right;
+    bool is_vol_set;
+    qap_stream_state stream_state[MAX_QAP_MODULE_IN];
+    bool is_session_closing;
+    bool is_session_output_active;
+    pthread_cond_t session_output_cond;
+    pthread_mutex_t session_output_lock;
+
+};
+
+struct qap {
+    struct audio_device *adev;
+
+    pthread_mutex_t lock;
+
+    bool bt_connect;
+    bool hdmi_connect;
+    int hdmi_sink_channels;
+
+    //Flag to indicate if QAP transcode output stream is enabled from any mm module.
+    bool passthrough_enabled;
+    //Flag to indicate if QAP mch pcm output stream is enabled from any mm module.
+    bool mch_pcm_hdmi_enabled;
+
+    //Flag to indicate if msmd is supported.
+    bool qap_msmd_enabled;
+
+    bool qap_output_block_handling;
+    //Handle of QAP input stream, which is routed as QAP passthrough.
+    struct stream_out *passthrough_in;
+    //Handle of QAP passthrough stream.
+    struct stream_out *passthrough_out;
+
+    struct qap_module qap_mod[MAX_MM_MODULE_TYPE];
+};
+
+//Global handle of QAP. Access to this should be protected by mutex lock.
+static struct qap *p_qap = NULL;
+
+/* Gets the pointer to qap module for the qap input stream. */
+static struct qap_module* get_qap_module_for_input_stream_l(struct stream_out *out)
+{
+    struct qap_module *qap_mod = NULL;
+    int i, j;
+    if (!p_qap) return NULL;
+
+    for (i = 0; i < MAX_MM_MODULE_TYPE; i++) {
+        for (j = 0; j < MAX_QAP_MODULE_IN; j++) {
+            if (p_qap->qap_mod[i].stream_in[j] == out) {
+                qap_mod = &(p_qap->qap_mod[i]);
+                break;
+            }
+        }
+    }
+
+    return qap_mod;
+}
+
+/* Finds the mm module input stream index for the QAP input stream. */
+static int get_input_stream_index_l(struct stream_out *out)
+{
+    int index = -1, j;
+    struct qap_module* qap_mod = NULL;
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod) return index;
+
+    for (j = 0; j < MAX_QAP_MODULE_IN; j++) {
+        if (qap_mod->stream_in[j] == out) {
+            index = j;
+            break;
+        }
+    }
+
+    return index;
+}
+
+static void set_stream_state_l(struct stream_out *out, int state)
+{
+    struct qap_module *qap_mod = get_qap_module_for_input_stream_l(out);
+    int index = get_input_stream_index_l(out);
+    if (qap_mod && index >= 0) qap_mod->stream_state[index] = state;
+}
+
+static bool check_stream_state_l(struct stream_out *out, int state)
+{
+    struct qap_module *qap_mod = get_qap_module_for_input_stream_l(out);
+    int index = get_input_stream_index_l(out);
+    if (qap_mod && index >= 0) return ((int)qap_mod->stream_state[index] == state);
+    return false;
+}
+
+/* Finds the right mm module for the QAP input stream format. */
+static mm_module_type get_mm_module_for_format_l(audio_format_t format)
+{
+    int j;
+
+    DEBUG_MSG("Format 0x%x", format);
+
+    if (format == AUDIO_FORMAT_PCM_16_BIT) {
+        //If dts is not supported then alway support pcm with MS12
+        if (!property_get_bool("vendor.audio.qap.dts_m8", false)) { //TODO: Need to add this property for DTS.
+            return MS12;
+        }
+
+        //If QAP passthrough is active then send the PCM stream to primary HAL.
+        if (!p_qap->passthrough_out) {
+            /* Iff any stream is active in MS12 module then route PCM stream to it. */
+            for (j = 0; j < MAX_QAP_MODULE_IN; j++) {
+                if (p_qap->qap_mod[MS12].stream_in[j]) {
+                    return MS12;
+                }
+            }
+        }
+        return INVALID_MM_MODULE;
+    }
+
+    switch (format & AUDIO_FORMAT_MAIN_MASK) {
+        case AUDIO_FORMAT_AC3:
+        case AUDIO_FORMAT_E_AC3:
+        case AUDIO_FORMAT_AAC:
+        case AUDIO_FORMAT_AAC_ADTS:
+        case AUDIO_FORMAT_AC4:
+            return MS12;
+        case AUDIO_FORMAT_DTS:
+        case AUDIO_FORMAT_DTS_HD:
+            return DTS_M8;
+        default:
+            return INVALID_MM_MODULE;
+    }
+}
+
+static bool is_main_active_l(struct qap_module* qap_mod)
+{
+   return (qap_mod->stream_in[QAP_IN_MAIN] || qap_mod->stream_in[QAP_IN_MAIN_2]);
+}
+
+static bool is_dual_main_active_l(struct qap_module* qap_mod)
+{
+   return (qap_mod->stream_in[QAP_IN_MAIN] && qap_mod->stream_in[QAP_IN_MAIN_2]);
+}
+
+//Checks if any main or pcm stream is running in the session.
+static bool is_any_stream_running_l(struct qap_module* qap_mod)
+{
+    //Not checking associated stream.
+    struct stream_out *out = qap_mod->stream_in[QAP_IN_MAIN];
+    struct stream_out *out_pcm = qap_mod->stream_in[QAP_IN_PCM];
+    struct stream_out *out_main2 = qap_mod->stream_in[QAP_IN_MAIN_2];
+
+    if ((out == NULL || (out != NULL && check_stream_state_l(out, STOPPED)))
+        && (out_main2 == NULL || (out_main2 != NULL && check_stream_state_l(out_main2, STOPPED)))
+        && (out_pcm == NULL || (out_pcm != NULL && check_stream_state_l(out_pcm, STOPPED)))) {
+        return false;
+    }
+    return true;
+}
+
+/* Gets the pcm output buffer size(in samples) for the mm module. */
+static uint32_t get_pcm_output_buffer_size_samples_l(struct qap_module *qap_mod)
+{
+    uint32_t pcm_output_buffer_size = 0;
+
+    if (qap_mod == &p_qap->qap_mod[MS12]) {
+        pcm_output_buffer_size = MS12_PCM_OUT_FRAGMENT_SIZE;
+    } else if (qap_mod == &p_qap->qap_mod[DTS_M8]) {
+        pcm_output_buffer_size = DTS_PCM_OUT_FRAGMENT_SIZE;
+    }
+
+    return pcm_output_buffer_size;
+}
+
+static int get_media_fmt_array_index_for_output_id_l(
+        struct qap_module* qap_mod,
+        uint32_t output_id)
+{
+    int i;
+    for (i = 0; i < MAX_SUPPORTED_OUTPUTS; i++) {
+        if (qap_mod->session_outputs_config.output_config[i].id == output_id) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+/* Acquire Mutex lock on output stream */
+static void lock_output_stream_l(struct stream_out *out)
+{
+    pthread_mutex_lock(&out->pre_lock);
+    pthread_mutex_lock(&out->lock);
+    pthread_mutex_unlock(&out->pre_lock);
+}
+
+/* Release Mutex lock on output stream */
+static void unlock_output_stream_l(struct stream_out *out)
+{
+    pthread_mutex_unlock(&out->lock);
+}
+
+/* Checks if stream can be routed as QAP passthrough or not. */
+static bool audio_extn_qap_passthrough_enabled(struct stream_out *out)
+{
+    DEBUG_MSG("Format 0x%x", out->format);
+    bool is_enabled = false;
+
+    if (!p_qap) return false;
+
+    if ((!property_get_bool("vendor.audio.qap.reencode", false))
+        && property_get_bool("vendor.audio.qap.passthrough", false)) {
+
+        if ((out->format == AUDIO_FORMAT_PCM_16_BIT) && (popcount(out->channel_mask) > 2)) {
+            is_enabled = true;
+        } else if (property_get_bool("vendor.audio.offload.passthrough", false)) {
+            switch (out->format) {
+                case AUDIO_FORMAT_AC3:
+                case AUDIO_FORMAT_E_AC3:
+                case AUDIO_FORMAT_DTS:
+                case AUDIO_FORMAT_DTS_HD:
+                case AUDIO_FORMAT_DOLBY_TRUEHD:
+                case AUDIO_FORMAT_IEC61937: {
+                    is_enabled = true;
+                    break;
+                }
+                default:
+                    is_enabled = false;
+                break;
+            }
+        }
+    }
+
+    return is_enabled;
+}
+
+/*Closes all pcm hdmi output from QAP. */
+static void close_all_pcm_hdmi_output_l()
+{
+    int i;
+    //Closing all the PCM HDMI output stream from QAP.
+    for (i = 0; i < MAX_MM_MODULE_TYPE; i++) {
+        if (p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD_MCH]) {
+            adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                     (struct audio_stream_out *)(p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD_MCH]));
+            p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD_MCH] = NULL;
+        }
+
+        if ((p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD])
+            && (p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD]->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)) {
+            adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                     (struct audio_stream_out *)(p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD]));
+            p_qap->qap_mod[i].stream_out[QAP_OUT_OFFLOAD] = NULL;
+        }
+    }
+
+    p_qap->mch_pcm_hdmi_enabled = 0;
+}
+
+static void close_all_hdmi_output_l()
+{
+    int k;
+    for (k = 0; k < MAX_MM_MODULE_TYPE; k++) {
+        if (p_qap->qap_mod[k].stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]) {
+            adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                     (struct audio_stream_out *)(p_qap->qap_mod[k].stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]));
+            p_qap->qap_mod[k].stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH] = NULL;
+        }
+    }
+    p_qap->passthrough_enabled = 0;
+
+    close_all_pcm_hdmi_output_l();
+}
+
+static int qap_out_callback(stream_callback_event_t event, void *param __unused, void *cookie)
+{
+    struct stream_out *out = (struct stream_out *)cookie;
+
+    out->client_callback(event, NULL, out->client_cookie);
+    return 0;
+}
+
+/* Creates the QAP passthrough output stream. */
+static int create_qap_passthrough_stream_l()
+{
+    DEBUG_MSG("Entry");
+
+    int ret = 0;
+    struct stream_out *out = p_qap->passthrough_in;
+
+    if (!out) return -EINVAL;
+
+    pthread_mutex_lock(&p_qap->lock);
+    lock_output_stream_l(out);
+
+    //Creating QAP passthrough output stream.
+    if (NULL == p_qap->passthrough_out) {
+        audio_output_flags_t flags;
+        struct audio_config config;
+        audio_devices_t devices;
+
+        config.sample_rate = config.offload_info.sample_rate = out->sample_rate;
+        config.offload_info.version = AUDIO_INFO_INITIALIZER.version;
+        config.offload_info.size = AUDIO_INFO_INITIALIZER.size;
+        config.offload_info.format = out->format;
+        config.offload_info.bit_width = out->bit_width;
+        config.format = out->format;
+        config.offload_info.channel_mask = config.channel_mask = out->channel_mask;
+
+        //Device is copied from the QAP passthrough input stream.
+        devices = out->devices;
+        flags = out->flags;
+
+        ret = adev_open_output_stream((struct audio_hw_device *)p_qap->adev,
+                                      QAP_DEFAULT_PASSTHROUGH_HANDLE,
+                                      devices,
+                                      flags,
+                                      &config,
+                                      (struct audio_stream_out **)&(p_qap->passthrough_out),
+                                      NULL);
+        if (ret < 0) {
+            ERROR_MSG("adev_open_output_stream failed with ret = %d!", ret);
+            unlock_output_stream_l(out);
+            return ret;
+        }
+        p_qap->passthrough_in = out;
+        p_qap->passthrough_out->stream.set_callback((struct audio_stream_out *)p_qap->passthrough_out,
+                                                    (stream_callback_t) qap_out_callback, out);
+    }
+
+    unlock_output_stream_l(out);
+
+    //Since QAP-Passthrough is created, close other HDMI outputs.
+    close_all_hdmi_output_l();
+
+    pthread_mutex_unlock(&p_qap->lock);
+    return ret;
+}
+
+
+/* Stops a QAP module stream.*/
+static int audio_extn_qap_stream_stop(struct stream_out *out)
+{
+    int ret = 0;
+    DEBUG_MSG("Output Stream 0x%x", (int)out);
+
+    if (!check_stream_state_l(out, RUN)) return ret;
+
+    struct qap_module *qap_mod = get_qap_module_for_input_stream_l(out);
+
+    if (!qap_mod || !qap_mod->session_handle|| !out->qap_stream_handle) {
+        ERROR_MSG("Wrong state to process qap_mod(%p) sess_hadl(%p) strm hndl(%p)",
+                                qap_mod, qap_mod->session_handle, out->qap_stream_handle);
+        return -EINVAL;
+    }
+
+    ret = qap_module_cmd(out->qap_stream_handle,
+                            QAP_MODULE_CMD_STOP,
+                            sizeof(QAP_MODULE_CMD_STOP),
+                            NULL,
+                            NULL,
+                            NULL);
+    if (QAP_STATUS_OK != ret) {
+        ERROR_MSG("stop failed %d", ret);
+        return -EINVAL;
+    }
+
+    return ret;
+}
+
+static int qap_out_drain(struct audio_stream_out* stream, audio_drain_type_t type)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    int status = 0;
+    struct qap_module *qap_mod = NULL;
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    DEBUG_MSG("Output Stream %p", out);
+
+    lock_output_stream_l(out);
+
+    //If QAP passthrough is enabled then block the drain on module stream.
+    if (p_qap->passthrough_out) {
+        pthread_mutex_lock(&p_qap->lock);
+        //If drain is received for QAP passthorugh stream then call the primary HAL api.
+        if (p_qap->passthrough_in == out) {
+            status = p_qap->passthrough_out->stream.drain(
+                    (struct audio_stream_out *)p_qap->passthrough_out, type);
+        }
+        pthread_mutex_unlock(&p_qap->lock);
+    } else if (!is_any_stream_running_l(qap_mod)) {
+        //If stream is already stopped then send the drain ready.
+        out->client_callback(STREAM_CBK_EVENT_DRAIN_READY, NULL, out->client_cookie);
+        set_stream_state_l(out, STOPPED);
+    } else {
+        qap_audio_buffer_t *buffer;
+        buffer = (qap_audio_buffer_t *) calloc(1, sizeof(qap_audio_buffer_t));
+        buffer->common_params.offset = 0;
+        buffer->common_params.data = buffer;
+        buffer->common_params.size = 0;
+        buffer->buffer_parms.input_buf_params.flags = QAP_BUFFER_EOS;
+        DEBUG_MSG("Queing EOS buffer %p flags %d size %d", buffer, buffer->buffer_parms.input_buf_params.flags, buffer->common_params.size);
+        status = qap_module_process(out->qap_stream_handle, buffer);
+        if (QAP_STATUS_OK != status) {
+            ERROR_MSG("EOS buffer queing failed%d", status);
+            return -EINVAL;
+        }
+
+        //Drain the module input stream.
+        /* Stream stop will trigger EOS and on EOS_EVENT received
+         from callback DRAIN_READY command is sent */
+        status = audio_extn_qap_stream_stop(out);
+
+        if (status == 0) {
+            //Setting state to stopping as client is expecting drain_ready event.
+            set_stream_state_l(out, STOPPING);
+        }
+    }
+
+    unlock_output_stream_l(out);
+    return status;
+}
+
+
+/* Flush the QAP module input stream. */
+static int audio_extn_qap_stream_flush(struct stream_out *out)
+{
+    DEBUG_MSG("Output Stream %p", out);
+    int ret = -EINVAL;
+    struct qap_module *qap_mod = NULL;
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod || !qap_mod->session_handle|| !out->qap_stream_handle) {
+        ERROR_MSG("Wrong state to process qap_mod(%p) sess_hadl(%p) strm hndl(%p)",
+                                qap_mod, qap_mod->session_handle, out->qap_stream_handle);
+        return -EINVAL;
+    }
+
+    ret = qap_module_cmd(out->qap_stream_handle,
+                            QAP_MODULE_CMD_FLUSH,
+                            sizeof(QAP_MODULE_CMD_FLUSH),
+                            NULL,
+                            NULL,
+                            NULL);
+    if (QAP_STATUS_OK != ret) {
+        ERROR_MSG("flush failed %d", ret);
+        return -EINVAL;
+    }
+
+    return ret;
+}
+
+
+/* Pause the QAP module input stream. */
+static int qap_stream_pause_l(struct stream_out *out)
+{
+    struct qap_module *qap_mod = NULL;
+    int ret = -EINVAL;
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod || !qap_mod->session_handle|| !out->qap_stream_handle) {
+        ERROR_MSG("Wrong state to process qap_mod(%p) sess_hadl(%p) strm hndl(%p)",
+            qap_mod, qap_mod->session_handle, out->qap_stream_handle);
+        return -EINVAL;
+    }
+
+    ret = qap_module_cmd(out->qap_stream_handle,
+                            QAP_MODULE_CMD_PAUSE,
+                            sizeof(QAP_MODULE_CMD_PAUSE),
+                            NULL,
+                            NULL,
+                            NULL);
+    if (QAP_STATUS_OK != ret) {
+        ERROR_MSG("pause failed %d", ret);
+        return -EINVAL;
+    }
+
+    return ret;
+}
+
+
+/* Flush the QAP input stream. */
+static int qap_out_flush(struct audio_stream_out* stream)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    int status = 0;
+
+    DEBUG_MSG("Output Stream %p", out);
+    lock_output_stream_l(out);
+
+    if (!out->standby) {
+        //If QAP passthrough is active then block the flush on module input streams.
+        if (p_qap->passthrough_out) {
+            pthread_mutex_lock(&p_qap->lock);
+            //If flush is received for the QAP passthrough stream then call the primary HAL api.
+            if (p_qap->passthrough_in == out) {
+                status = p_qap->passthrough_out->stream.flush(
+                        (struct audio_stream_out *)p_qap->passthrough_out);
+                out->offload_state = OFFLOAD_STATE_IDLE;
+            }
+            pthread_mutex_unlock(&p_qap->lock);
+        } else {
+            //Flush the module input stream.
+            status = audio_extn_qap_stream_flush(out);
+        }
+    }
+    unlock_output_stream_l(out);
+    DEBUG_MSG("Exit");
+    return status;
+}
+
+
+/* Pause a QAP input stream. */
+static int qap_out_pause(struct audio_stream_out* stream)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    int status = 0;
+    DEBUG_MSG("Output Stream %p", out);
+
+    lock_output_stream_l(out);
+
+    //If QAP passthrough is enabled then block the pause on module stream.
+    if (p_qap->passthrough_out) {
+        pthread_mutex_lock(&p_qap->lock);
+        //If pause is received for QAP passthorugh stream then call the primary HAL api.
+        if (p_qap->passthrough_in == out) {
+            status = p_qap->passthrough_out->stream.pause(
+                    (struct audio_stream_out *)p_qap->passthrough_out);
+            out->offload_state = OFFLOAD_STATE_PAUSED;
+        }
+        pthread_mutex_unlock(&p_qap->lock);
+    } else {
+        //Pause the module input stream.
+        status = qap_stream_pause_l(out);
+    }
+
+    unlock_output_stream_l(out);
+    return status;
+}
+
+static void close_qap_passthrough_stream_l()
+{
+    if (p_qap->passthrough_out != NULL) { //QAP pasthroug is enabled. Close it.
+        pthread_mutex_lock(&p_qap->lock);
+        adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                 (struct audio_stream_out *)(p_qap->passthrough_out));
+        p_qap->passthrough_out = NULL;
+        pthread_mutex_unlock(&p_qap->lock);
+
+        if (p_qap->passthrough_in->qap_stream_handle) {
+            qap_out_pause((struct audio_stream_out*)p_qap->passthrough_in);
+            qap_out_flush((struct audio_stream_out*)p_qap->passthrough_in);
+            qap_out_drain((struct audio_stream_out*)p_qap->passthrough_in,
+                          (audio_drain_type_t)STREAM_CBK_EVENT_DRAIN_READY);
+        }
+    }
+}
+
+static int qap_out_standby(struct audio_stream *stream)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    struct qap_module *qap_mod = NULL;
+    int status = 0;
+    int i;
+
+    ALOGD("%s: enter: stream (%p) usecase(%d: %s)", __func__,
+          stream, out->usecase, use_case_table[out->usecase]);
+
+    lock_output_stream_l(out);
+
+    //If QAP passthrough is active then block standby on all the input streams of QAP mm modules.
+    if (p_qap->passthrough_out) {
+        //If standby is received on QAP passthrough stream then forward it to primary HAL.
+        if (p_qap->passthrough_in == out) {
+            status = p_qap->passthrough_out->stream.common.standby(
+                    (struct audio_stream *)p_qap->passthrough_out);
+        }
+    } else if (check_stream_state_l(out, RUN)) {
+        //If QAP passthrough stream is not active then stop the QAP module stream.
+        status = audio_extn_qap_stream_stop(out);
+
+        if (status == 0) {
+            //Setting state to stopped as client not expecting drain_ready event.
+            set_stream_state_l(out, STOPPED);
+        }
+        if(p_qap->qap_output_block_handling) {
+            qap_mod = get_qap_module_for_input_stream_l(out);
+            for (i = 0; i < MAX_QAP_MODULE_IN; i++) {
+                if (qap_mod->stream_in[i] != NULL &&
+                    check_stream_state_l(qap_mod->stream_in[i], RUN)) {
+                    break;
+                }
+            }
+
+            if (i != MAX_QAP_MODULE_IN) {
+                DEBUG_MSG("[%s] stream is still active.", use_case_table[qap_mod->stream_in[i]->usecase]);
+            } else {
+                pthread_mutex_lock(&qap_mod->session_output_lock);
+                qap_mod->is_session_output_active = false;
+                pthread_mutex_unlock(&qap_mod->session_output_lock);
+                DEBUG_MSG(" all the input streams are either closed or stopped(standby) block the MM module output");
+            }
+        }
+    }
+
+    if (!out->standby) {
+        out->standby = true;
+    }
+
+    unlock_output_stream_l(out);
+    return status;
+}
+
+/* Sets the volume to PCM output stream. */
+static int qap_out_set_volume(struct audio_stream_out *stream, float left, float right)
+{
+    int ret = 0;
+    struct stream_out *out = (struct stream_out *)stream;
+    struct qap_module *qap_mod = NULL;
+
+    DEBUG_MSG("Left %f, Right %f", left, right);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod) {
+        return -EINVAL;
+    }
+
+    pthread_mutex_lock(&p_qap->lock);
+    qap_mod->vol_left = left;
+    qap_mod->vol_right = right;
+    qap_mod->is_vol_set = true;
+    pthread_mutex_unlock(&p_qap->lock);
+
+    if (qap_mod->stream_out[QAP_OUT_OFFLOAD] != NULL) {
+        ret = qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.set_volume(
+                (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD], left, right);
+    }
+
+    return ret;
+}
+
+/* Starts a QAP module stream. */
+static int qap_stream_start_l(struct stream_out *out)
+{
+    int ret = 0;
+    struct qap_module *qap_mod = NULL;
+
+    DEBUG_MSG("Output Stream = %p", out);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if ((!qap_mod) || (!qap_mod->session_handle)) {
+        ERROR_MSG("QAP mod is not inited (%p) or session is not yet opened (%p) ",
+            qap_mod, qap_mod->session_handle);
+        return -EINVAL;
+    }
+    if (out->qap_stream_handle) {
+        ret = qap_module_cmd(out->qap_stream_handle,
+                             QAP_MODULE_CMD_START,
+                             sizeof(QAP_MODULE_CMD_START),
+                             NULL,
+                             NULL,
+                             NULL);
+        if (ret != QAP_STATUS_OK) {
+            ERROR_MSG("start failed");
+            ret = -EINVAL;
+        }
+    } else
+        ERROR_MSG("QAP stream not yet opened, drop this cmd");
+
+    DEBUG_MSG("exit");
+    return ret;
+
+}
+
+static int qap_start_output_stream(struct stream_out *out)
+{
+    int ret = 0;
+    struct audio_device *adev = out->dev;
+
+    if ((out->usecase < 0) || (out->usecase >= AUDIO_USECASE_MAX)) {
+        ret = -EINVAL;
+        DEBUG_MSG("Use case out of bounds sleeping for 500ms");
+        usleep(50000);
+        return ret;
+    }
+
+    ALOGD("%s: enter: stream(%p)usecase(%d: %s) devices(%#x)",
+          __func__, &out->stream, out->usecase, use_case_table[out->usecase],
+          out->devices);
+
+    if (CARD_STATUS_OFFLINE == out->card_status ||
+        CARD_STATUS_OFFLINE == adev->card_status) {
+        ALOGE("%s: sound card is not active/SSR returning error", __func__);
+        ret = -EIO;
+        usleep(50000);
+        return ret;
+    }
+
+    return qap_stream_start_l(out);
+}
+
+/* Sends input buffer to the QAP MM module. */
+static int qap_module_write_input_buffer(struct stream_out *out, const void *buffer, int bytes)
+{
+    int ret = -EINVAL;
+    struct qap_module *qap_mod = NULL;
+    qap_audio_buffer_t buff;
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if ((!qap_mod) || (!qap_mod->session_handle) || (!out->qap_stream_handle)) {
+        return ret;
+    }
+
+    //If data received on associated stream when all other stream are stopped then drop the data.
+    if (out == qap_mod->stream_in[QAP_IN_ASSOC] && !is_any_stream_running_l(qap_mod))
+        return bytes;
+
+    memset(&buff, 0, sizeof(buff));
+    buff.common_params.offset = 0;
+    buff.common_params.size = bytes;
+    buff.common_params.data = (void *) buffer;
+    buff.common_params.timestamp = QAP_BUFFER_NO_TSTAMP;
+    buff.buffer_parms.input_buf_params.flags = QAP_BUFFER_NO_TSTAMP;
+    DEBUG_MSG("calling module process with bytes %d %p", bytes, buffer);
+    ret  = qap_module_process(out->qap_stream_handle, &buff);
+
+    if(ret > 0) set_stream_state_l(out, RUN);
+
+    return ret;
+}
+
+static ssize_t qap_out_write(struct audio_stream_out *stream, const void *buffer, size_t bytes)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    struct audio_device *adev = out->dev;
+    ssize_t ret = 0;
+    struct qap_module *qap_mod = NULL;
+
+    DEBUG_MSG_VV("bytes = %d, usecase[%s] and flags[%x] for handle[%p]",
+          (int)bytes, use_case_table[out->usecase], out->flags, out);
+
+    lock_output_stream_l(out);
+
+    // If QAP passthrough is active then block writing data to QAP mm module.
+    if (p_qap->passthrough_out) {
+        //If write is received for the QAP passthrough stream then send the buffer to primary HAL.
+        if (p_qap->passthrough_in == out) {
+            ret = p_qap->passthrough_out->stream.write(
+                    (struct audio_stream_out *)(p_qap->passthrough_out),
+                    buffer,
+                    bytes);
+            if (ret > 0) out->standby = false;
+        }
+        unlock_output_stream_l(out);
+        return ret;
+    } else if (out->standby) {
+        pthread_mutex_lock(&adev->lock);
+        ret = qap_start_output_stream(out);
+        pthread_mutex_unlock(&adev->lock);
+        if (ret == 0) {
+            out->standby = false;
+            if(p_qap->qap_output_block_handling) {
+                qap_mod = get_qap_module_for_input_stream_l(out);
+
+                pthread_mutex_lock(&qap_mod->session_output_lock);
+                if (qap_mod->is_session_output_active == false) {
+                    qap_mod->is_session_output_active = true;
+                    pthread_cond_signal(&qap_mod->session_output_cond);
+                    DEBUG_MSG("Wake up MM module output thread");
+                }
+                pthread_mutex_unlock(&qap_mod->session_output_lock);
+            }
+        } else {
+            goto exit;
+        }
+    }
+
+    if ((adev->is_channel_status_set == false) && (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)) {
+        audio_utils_set_hdmi_channel_status(out, (char *)buffer, bytes);
+        adev->is_channel_status_set = true;
+    }
+
+    ret = qap_module_write_input_buffer(out, buffer, bytes);
+    DEBUG_MSG_VV("Bytes consumed [%d] by MM Module", (int)ret);
+
+    if (ret >= 0) {
+        out->written += ret / ((popcount(out->channel_mask) * sizeof(short)));
+    }
+
+
+exit:
+    unlock_output_stream_l(out);
+
+    if (ret < 0) {
+        if (ret == -EAGAIN) {
+            DEBUG_MSG_VV("No space available to consume bytes, post msg to cb thread");
+            bytes = 0;
+        } else if (ret == -ENOMEM || ret == -EPERM) {
+            if (out->pcm)
+                ERROR_MSG("error %d, %s", (int)ret, pcm_get_error(out->pcm));
+            qap_out_standby(&out->stream.common);
+            DEBUG_MSG("SLEEP for 100sec");
+            usleep(bytes * 1000000
+                   / audio_stream_out_frame_size(stream)
+                   / out->stream.common.get_sample_rate(&out->stream.common));
+        }
+    } else if (ret < (ssize_t)bytes) {
+        //partial buffer copied to the module.
+        DEBUG_MSG_VV("Not enough space available to consume all the bytes");
+        bytes = ret;
+    }
+    return bytes;
+}
+
+/* Gets PCM offload buffer size for a given config. */
+static uint32_t qap_get_pcm_offload_buffer_size(audio_offload_info_t* info,
+                                                uint32_t samples_per_frame)
+{
+    uint32_t fragment_size = 0;
+
+    fragment_size = (samples_per_frame * (info->bit_width >> 3) * popcount(info->channel_mask));
+
+    if (fragment_size < MIN_PCM_OFFLOAD_FRAGMENT_SIZE)
+        fragment_size = MIN_PCM_OFFLOAD_FRAGMENT_SIZE;
+    else if (fragment_size > MAX_PCM_OFFLOAD_FRAGMENT_SIZE)
+        fragment_size = MAX_PCM_OFFLOAD_FRAGMENT_SIZE;
+
+    // To have same PCM samples for all channels, the buffer size requires to
+    // be multiple of (number of channels * bytes per sample)
+    // For writes to succeed, the buffer must be written at address which is multiple of 32
+    fragment_size = ALIGN(fragment_size,
+                          ((info->bit_width >> 3) * popcount(info->channel_mask) * 32));
+
+    ALOGI("Qap PCM offload Fragment size is %d bytes", fragment_size);
+
+    return fragment_size;
+}
+
+static uint32_t qap_get_pcm_offload_input_buffer_size(audio_offload_info_t* info)
+{
+    return qap_get_pcm_offload_buffer_size(info, MS12_PCM_IN_FRAGMENT_SIZE);
+}
+
+static uint32_t qap_get_pcm_offload_output_buffer_size(struct qap_module *qap_mod,
+                                                audio_offload_info_t* info)
+{
+    return qap_get_pcm_offload_buffer_size(info, get_pcm_output_buffer_size_samples_l(qap_mod));
+}
+
+/* Gets buffer latency in samples. */
+static int get_buffer_latency(struct stream_out *out, uint32_t buffer_size, uint32_t *latency)
+{
+    unsigned long int samples_in_one_encoded_frame;
+    unsigned long int size_of_one_encoded_frame;
+
+    switch (out->format) {
+        case AUDIO_FORMAT_AC3:
+            samples_in_one_encoded_frame = DD_FRAME_SIZE;
+            size_of_one_encoded_frame = DD_ENCODER_OUTPUT_SIZE;
+        break;
+        case AUDIO_FORMAT_E_AC3:
+            samples_in_one_encoded_frame = DDP_FRAME_SIZE;
+            size_of_one_encoded_frame = DDP_ENCODER_OUTPUT_SIZE;
+        break;
+        case AUDIO_FORMAT_DTS:
+            samples_in_one_encoded_frame = DTS_FRAME_SIZE;
+            size_of_one_encoded_frame = DTS_ENCODER_OUTPUT_SIZE;
+        break;
+        case AUDIO_FORMAT_DTS_HD:
+            samples_in_one_encoded_frame = DTSHD_FRAME_SIZE;
+            size_of_one_encoded_frame = DTSHD_ENCODER_OUTPUT_SIZE;
+        break;
+        case AUDIO_FORMAT_PCM_16_BIT:
+            samples_in_one_encoded_frame = 1;
+            size_of_one_encoded_frame = ((out->bit_width) >> 3) * popcount(out->channel_mask);
+        break;
+        default:
+            *latency = 0;
+            return (-EINVAL);
+    }
+
+    *latency = ((buffer_size * samples_in_one_encoded_frame) / size_of_one_encoded_frame);
+    return 0;
+}
+
+/* Returns the number of frames rendered to outside observer. */
+static int qap_get_rendered_frames(struct stream_out *out, uint64_t *frames)
+{
+    int ret = 0, i;
+    struct str_parms *parms;
+//    int value = 0;
+    int module_latency = 0;
+    uint32_t kernel_latency = 0;
+    uint32_t dsp_latency = 0;
+    int signed_frames = 0;
+    char* kvpairs = NULL;
+    struct qap_module *qap_mod = NULL;
+
+    DEBUG_MSG("Output Format %d", out->format);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod || !qap_mod->session_handle|| !out->qap_stream_handle) {
+        ERROR_MSG("Wrong state to process qap_mod(%p) sess_hadl(%p) strm hndl(%p)",
+            qap_mod, qap_mod->session_handle, out->qap_stream_handle);
+        return -EINVAL;
+    }
+
+    //Get MM module latency.
+/* Tobeported
+    kvpairs = qap_mod->qap_audio_stream_get_param(out->qap_stream_handle, "get_latency");
+*/
+    if (kvpairs) {
+        parms = str_parms_create_str(kvpairs);
+        ret = str_parms_get_int(parms, "get_latency", &module_latency);
+        if (ret >= 0) {
+            str_parms_destroy(parms);
+            parms = NULL;
+        }
+        free(kvpairs);
+        kvpairs = NULL;
+    }
+
+    //Get kernel Latency
+    for (i = MAX_QAP_MODULE_OUT - 1; i >= 0; i--) {
+        if (qap_mod->stream_out[i] == NULL) {
+            continue;
+        } else {
+            unsigned int num_fragments = qap_mod->stream_out[i]->compr_config.fragments;
+            uint32_t fragment_size = qap_mod->stream_out[i]->compr_config.fragment_size;
+            uint32_t kernel_buffer_size = num_fragments * fragment_size;
+            get_buffer_latency(qap_mod->stream_out[i], kernel_buffer_size, &kernel_latency);
+            break;
+        }
+    }
+
+    //Get DSP latency
+    if ((qap_mod->stream_out[QAP_OUT_OFFLOAD] != NULL)
+        || (qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH] != NULL)) {
+        unsigned int sample_rate = 0;
+        audio_usecase_t platform_latency = 0;
+
+        if (qap_mod->stream_out[QAP_OUT_OFFLOAD])
+            sample_rate = qap_mod->stream_out[QAP_OUT_OFFLOAD]->sample_rate;
+        else if (qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH])
+            sample_rate = qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->sample_rate;
+
+        if (qap_mod->stream_out[QAP_OUT_OFFLOAD])
+            platform_latency =
+                platform_render_latency(qap_mod->stream_out[QAP_OUT_OFFLOAD]->usecase);
+        else
+            platform_latency =
+                platform_render_latency(qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->usecase);
+
+        dsp_latency = (platform_latency * sample_rate) / 1000000LL;
+    } else if (qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH] != NULL) {
+        unsigned int sample_rate = 0;
+
+        sample_rate = qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]->sample_rate; //TODO: How this sample rate can be used?
+        dsp_latency = (COMPRESS_OFFLOAD_PLAYBACK_LATENCY * sample_rate) / 1000;
+    }
+
+    // MM Module Latency + Kernel Latency + DSP Latency
+    if ( audio_extn_bt_hal_get_output_stream(qap_mod->bt_hdl) != NULL) {
+        out->platform_latency = module_latency + audio_extn_bt_hal_get_latency(qap_mod->bt_hdl);
+    } else {
+        out->platform_latency = (uint32_t)module_latency + kernel_latency + dsp_latency;
+    }
+
+    if (out->format & AUDIO_FORMAT_PCM_16_BIT) {
+        *frames = 0;
+        signed_frames = out->written - out->platform_latency;
+        // It would be unusual for this value to be negative, but check just in case ...
+        if (signed_frames >= 0) {
+            *frames = signed_frames;
+        }
+/* Tobeported
+        }
+        else {
+
+        kvpairs = qap_mod->qap_audio_stream_get_param(out->qap_stream_handle, "position");
+    if (kvpairs) {
+        parms = str_parms_create_str(kvpairs);
+        ret = str_parms_get_int(parms, "position", &value);
+        if (ret >= 0) {
+            *frames = value;
+            signed_frames = value - out->platform_latency;
+            // It would be unusual for this value to be negative, but check just in case ...
+            if (signed_frames >= 0) {
+                *frames = signed_frames;
+            }
+        }
+        str_parms_destroy(parms);
+    }
+*/
+    } else {
+        ret = -EINVAL;
+    }
+
+    return ret;
+}
+
+static int qap_out_get_render_position(const struct audio_stream_out *stream,
+                                   uint32_t *dsp_frames)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    int ret = 0;
+    uint64_t frames=0;
+    struct qap_module* qap_mod = NULL;
+    ALOGV("%s, Output Stream %p,dsp frames %d",__func__, stream, (int)dsp_frames);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod) {
+        ret = out->stream.get_render_position(stream, dsp_frames);
+        ALOGV("%s, non qap_MOD DSP FRAMES %d",__func__, (int)dsp_frames);
+        return ret;
+    }
+
+    if (p_qap->passthrough_out) {
+        pthread_mutex_lock(&p_qap->lock);
+        ret = p_qap->passthrough_out->stream.get_render_position((struct audio_stream_out *)p_qap->passthrough_out, dsp_frames);
+        pthread_mutex_unlock(&p_qap->lock);
+        ALOGV("%s, PASS THROUGH DSP FRAMES %p",__func__, dsp_frames);
+        return ret;
+        }
+    frames=*dsp_frames;
+    ret = qap_get_rendered_frames(out, &frames);
+    *dsp_frames = (uint32_t)frames;
+    ALOGV("%s, DSP FRAMES %d",__func__, (int)dsp_frames);
+    return ret;
+}
+
+static int qap_out_get_presentation_position(const struct audio_stream_out *stream,
+                                             uint64_t *frames,
+                                             struct timespec *timestamp)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    int ret = 0;
+
+//    DEBUG_MSG_VV("Output Stream %p", stream);
+
+    //If QAP passthorugh output stream is active.
+    if (p_qap->passthrough_out) {
+        if (p_qap->passthrough_in == out) {
+            //If api is called for QAP passthorugh stream then call the primary HAL api to get the position.
+            pthread_mutex_lock(&p_qap->lock);
+            ret = p_qap->passthrough_out->stream.get_presentation_position(
+                    (struct audio_stream_out *)p_qap->passthrough_out,
+                    frames,
+                    timestamp);
+            pthread_mutex_unlock(&p_qap->lock);
+        } else {
+            //If api is called for other stream then return zero frames.
+            *frames = 0;
+            clock_gettime(CLOCK_MONOTONIC, timestamp);
+        }
+        return ret;
+    }
+
+    ret = qap_get_rendered_frames(out, frames);
+    clock_gettime(CLOCK_MONOTONIC, timestamp);
+
+    return ret;
+}
+
+static uint32_t qap_out_get_latency(const struct audio_stream_out *stream)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    uint32_t latency = 0;
+    struct qap_module *qap_mod = NULL;
+    DEBUG_MSG_VV("Output Stream %p", out);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod) {
+        return 0;
+    }
+
+    //If QAP passthrough is active then block the get latency on module input streams.
+    if (p_qap->passthrough_out) {
+        pthread_mutex_lock(&p_qap->lock);
+        //If get latency is called for the QAP passthrough stream then call the primary HAL api.
+        if (p_qap->passthrough_in == out) {
+            latency = p_qap->passthrough_out->stream.get_latency(
+                    (struct audio_stream_out *)p_qap->passthrough_out);
+        }
+        pthread_mutex_unlock(&p_qap->lock);
+    } else {
+        if (is_offload_usecase(out->usecase)) {
+            latency = COMPRESS_OFFLOAD_PLAYBACK_LATENCY;
+        } else {
+            uint32_t sample_rate = 0;
+            latency = QAP_MODULE_PCM_INPUT_BUFFER_LATENCY; //Input latency
+
+            if (qap_mod->stream_out[QAP_OUT_OFFLOAD])
+                sample_rate = qap_mod->stream_out[QAP_OUT_OFFLOAD]->sample_rate;
+            else if (qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH])
+                sample_rate = qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->sample_rate;
+
+            if (sample_rate) {
+                latency += (get_pcm_output_buffer_size_samples_l(qap_mod) * 1000) / out->sample_rate;
+            }
+        }
+
+        if ( audio_extn_bt_hal_get_output_stream(qap_mod->bt_hdl) != NULL) {
+            if (is_offload_usecase(out->usecase)) {
+                latency = audio_extn_bt_hal_get_latency(qap_mod->bt_hdl) +
+                QAP_COMPRESS_OFFLOAD_PROCESSING_LATENCY;
+            } else {
+                latency = audio_extn_bt_hal_get_latency(qap_mod->bt_hdl) +
+                QAP_PCM_OFFLOAD_PROCESSING_LATENCY;
+            }
+        }
+    }
+
+    DEBUG_MSG_VV("Latency %d", latency);
+    return latency;
+}
+
+static bool qap_check_and_get_compressed_device_format(int device, int *format)
+{
+    switch (device) {
+        case (AUDIO_DEVICE_OUT_AUX_DIGITAL | QAP_AUDIO_FORMAT_AC3):
+            *format = AUDIO_FORMAT_AC3;
+            return true;
+        case (AUDIO_DEVICE_OUT_AUX_DIGITAL | QAP_AUDIO_FORMAT_EAC3):
+            *format = AUDIO_FORMAT_E_AC3;
+            return true;
+        case (AUDIO_DEVICE_OUT_AUX_DIGITAL | QAP_AUDIO_FORMAT_DTS):
+            *format = AUDIO_FORMAT_DTS;
+            return true;
+        default:
+            return false;
+    }
+}
+
+static void set_out_stream_channel_map(struct stream_out *out, qap_output_config_t * media_fmt)
+{
+    if (media_fmt == NULL || out == NULL) {
+        return;
+    }
+    struct audio_out_channel_map_param chmap = {0,{0}};
+    int i = 0;
+    chmap.channels = media_fmt->channels;
+    for (i = 0; i < chmap.channels && i < AUDIO_CHANNEL_COUNT_MAX && i < AUDIO_QAF_MAX_CHANNELS;
+            i++) {
+        chmap.channel_map[i] = media_fmt->ch_map[i];
+    }
+    audio_extn_utils_set_channel_map(out, &chmap);
+}
+
+bool audio_extn_is_qap_enabled()
+{
+    bool prop_enabled = false;
+    char value[PROPERTY_VALUE_MAX] = {0};
+    property_get("vendor.audio.qap.enabled", value, NULL);
+    prop_enabled = atoi(value) || !strncmp("true", value, 4);
+    DEBUG_MSG("%d", prop_enabled);
+    return (prop_enabled);
+}
+
+void static qap_close_all_output_streams(struct qap_module *qap_mod)
+{
+    int i =0;
+    struct stream_out *stream_out = NULL;
+    DEBUG_MSG("Entry");
+
+    for (i = 0; i < MAX_QAP_MODULE_OUT; i++) {
+        stream_out = qap_mod->stream_out[i];
+        if (stream_out != NULL) {
+            adev_close_output_stream((struct audio_hw_device *)p_qap->adev, (struct audio_stream_out *)stream_out);
+            DEBUG_MSG("Closed outputenum=%d session 0x%x %s",
+                    i, (int)stream_out, use_case_table[stream_out->usecase]);
+            qap_mod->stream_out[i] = NULL;
+        }
+        memset(&qap_mod->session_outputs_config.output_config[i], 0, sizeof(qap_session_outputs_config_t));
+        qap_mod->is_media_fmt_changed[i] = false;
+    }
+    DEBUG_MSG("exit");
+}
+
+/* Call back function for mm module. */
+static void qap_session_callback(qap_session_handle_t session_handle __unused,
+                                  void *prv_data,
+                                 qap_callback_event_t event_id,
+                                  int size,
+                                  void *data)
+{
+
+    /*
+     For SPKR:
+     1. Open pcm device if device_id passed to it SPKR and write the data to
+     pcm device
+
+     For HDMI
+     1.Open compress device for HDMI(PCM or AC3) based on current hdmi o/p format and write
+     data to the HDMI device.
+     */
+    int ret;
+    audio_output_flags_t flags;
+    struct qap_module* qap_mod = (struct qap_module*)prv_data;
+    struct audio_stream_out *bt_stream = NULL;
+    int format;
+    int8_t *data_buffer_p = NULL;
+    uint32_t buffer_size = 0;
+    bool need_to_recreate_stream = false;
+    struct audio_config config;
+    qap_output_config_t *new_conf = NULL;
+    qap_audio_buffer_t *buffer = (qap_audio_buffer_t *) data;
+    uint32_t device = 0;
+
+    if (qap_mod->is_session_closing) {
+        DEBUG_MSG("Dropping event as session is closing."
+                "Event = 0x%X, Bytes to write %d", event_id, size);
+        return;
+    }
+
+    if(p_qap->qap_output_block_handling) {
+        pthread_mutex_lock(&qap_mod->session_output_lock);
+        if (!qap_mod->is_session_output_active) {
+            qap_close_all_output_streams(qap_mod);
+            DEBUG_MSG("disabling MM module output by blocking the output thread");
+            pthread_cond_wait(&qap_mod->session_output_cond, &qap_mod->session_output_lock);
+            DEBUG_MSG("MM module output Enabled, output thread active");
+        }
+        pthread_mutex_unlock(&qap_mod->session_output_lock);
+    }
+
+    /* Default config initialization. */
+    config.sample_rate = config.offload_info.sample_rate = QAP_OUTPUT_SAMPLING_RATE;
+    config.offload_info.version = AUDIO_INFO_INITIALIZER.version;
+    config.offload_info.size = AUDIO_INFO_INITIALIZER.size;
+    config.format = config.offload_info.format = AUDIO_FORMAT_PCM_16_BIT;
+    config.offload_info.bit_width = CODEC_BACKEND_DEFAULT_BIT_WIDTH;
+    config.offload_info.channel_mask = config.channel_mask = AUDIO_CHANNEL_OUT_STEREO;
+
+    pthread_mutex_lock(&p_qap->lock);
+
+    if (event_id == QAP_CALLBACK_EVENT_OUTPUT_CFG_CHANGE) {
+        new_conf = &buffer->buffer_parms.output_buf_params.output_config;
+        qap_output_config_t *cached_conf = NULL;
+        int index = -1;
+
+        DEBUG_MSG("Received QAP_CALLBACK_EVENT_OUTPUT_CFG_CHANGE event for output id=0x%x",
+                buffer->buffer_parms.output_buf_params.output_id);
+
+        DEBUG_MSG("sample rate=%d bitwidth=%d format = %d channels =0x%x",
+            new_conf->sample_rate,
+            new_conf->bit_width,
+            new_conf->format,
+            new_conf->channels);
+
+        if ( (uint32_t)size < sizeof(qap_output_config_t)) {
+            ERROR_MSG("Size is not proper for the event AUDIO_OUTPUT_MEDIA_FORMAT_EVENT.");
+            return ;
+        }
+
+        index = get_media_fmt_array_index_for_output_id_l(qap_mod, buffer->buffer_parms.output_buf_params.output_id);
+
+        DEBUG_MSG("index = %d", index);
+
+        if (index >= 0) {
+            cached_conf = &qap_mod->session_outputs_config.output_config[index];
+        } else if (index < 0 && qap_mod->new_out_format_index < MAX_QAP_MODULE_OUT) {
+            index = qap_mod->new_out_format_index;
+            cached_conf = &qap_mod->session_outputs_config.output_config[index];
+            qap_mod->new_out_format_index++;
+        }
+
+        if (cached_conf == NULL) {
+            ERROR_MSG("Maximum output from a QAP module is reached. Can not process new output.");
+            return ;
+        }
+
+        if (memcmp(cached_conf, new_conf, sizeof(qap_output_config_t)) != 0) {
+            memcpy(cached_conf, new_conf, sizeof(qap_output_config_t));
+            qap_mod->is_media_fmt_changed[index] = true;
+        }
+    } else if (event_id == QAP_CALLBACK_EVENT_DATA) {
+        data_buffer_p = (int8_t*)buffer->common_params.data+buffer->common_params.offset;
+        buffer_size = buffer->common_params.size;
+        device = buffer->buffer_parms.output_buf_params.output_id;
+
+        DEBUG_MSG_VV("Received QAP_CALLBACK_EVENT_DATA event buff size(%d) for outputid=0x%x",
+            buffer_size, buffer->buffer_parms.output_buf_params.output_id);
+
+        if (buffer && buffer->common_params.data) {
+            int index = -1;
+
+            index = get_media_fmt_array_index_for_output_id_l(qap_mod, buffer->buffer_parms.output_buf_params.output_id);
+            DEBUG_MSG("index = %d", index);
+            if (index > -1 && qap_mod->is_media_fmt_changed[index]) {
+                DEBUG_MSG("FORMAT changed, recreate stream");
+                need_to_recreate_stream = true;
+                qap_mod->is_media_fmt_changed[index] = false;
+
+                qap_output_config_t *new_config = &qap_mod->session_outputs_config.output_config[index];
+
+                config.sample_rate = config.offload_info.sample_rate = new_config->sample_rate;
+                config.offload_info.version = AUDIO_INFO_INITIALIZER.version;
+                config.offload_info.size = AUDIO_INFO_INITIALIZER.size;
+                config.offload_info.bit_width = new_config->bit_width;
+
+                if (new_config->format == QAP_AUDIO_FORMAT_PCM_16_BIT) {
+                    if (new_config->bit_width == 16)
+                        config.format = config.offload_info.format = AUDIO_FORMAT_PCM_16_BIT;
+                    else if (new_config->bit_width == 24)
+                        config.format = config.offload_info.format = AUDIO_FORMAT_PCM_24_BIT_PACKED;
+                    else
+                        config.format = config.offload_info.format = AUDIO_FORMAT_PCM_32_BIT;
+                } else if (new_config->format  == QAP_AUDIO_FORMAT_AC3)
+                    config.format = config.offload_info.format = AUDIO_FORMAT_AC3;
+                else if (new_config->format  == QAP_AUDIO_FORMAT_EAC3)
+                    config.format = config.offload_info.format = AUDIO_FORMAT_E_AC3;
+                else if (new_config->format  == QAP_AUDIO_FORMAT_DTS)
+                    config.format = config.offload_info.format = AUDIO_FORMAT_DTS;
+
+                device |= (new_config->format & AUDIO_FORMAT_MAIN_MASK);
+
+                config.channel_mask = audio_channel_out_mask_from_count(new_config->channels);
+                config.offload_info.channel_mask = config.channel_mask;
+                DEBUG_MSG("sample rate=%d bitwidth=%d format = %d channels=%d channel_mask=%d device =0x%x",
+                    config.sample_rate,
+                    config.offload_info.bit_width,
+                    config.offload_info.format,
+                    new_config->channels,
+                    config.channel_mask,
+                    device);
+            }
+        }
+
+        if (p_qap->passthrough_out != NULL) {
+            //If QAP passthrough is active then all the module output will be dropped.
+            pthread_mutex_unlock(&p_qap->lock);
+            DEBUG_MSG("QAP-PSTH is active, DROPPING DATA!");
+            return;
+        }
+
+        if (qap_check_and_get_compressed_device_format(device, &format)) {
+            /*
+             * CASE 1: Transcoded output of mm module.
+             * If HDMI is not connected then drop the data.
+             * Only one HDMI output can be supported from all the mm modules of QAP.
+             * Multi-Channel PCM HDMI output streams will be closed from all the mm modules.
+             * If transcoded output of other module is already enabled then this data will be dropped.
+             */
+
+            if (!p_qap->hdmi_connect) {
+                DEBUG_MSG("HDMI not connected, DROPPING DATA!");
+                pthread_mutex_unlock(&p_qap->lock);
+                return;
+            }
+
+            //Closing all the PCM HDMI output stream from QAP.
+            close_all_pcm_hdmi_output_l();
+
+            /* If Media format was changed for this stream then need to re-create the stream. */
+            if (need_to_recreate_stream && qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]) {
+                DEBUG_MSG("closing Transcode Passthrough session ox%x",
+                    (int)qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]);
+                adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                         (struct audio_stream_out *)(qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]));
+                qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH] = NULL;
+                p_qap->passthrough_enabled = false;
+            }
+
+            if (!p_qap->passthrough_enabled
+                && !(qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH])) {
+
+                audio_devices_t devices;
+
+                config.format = config.offload_info.format = format;
+                config.offload_info.channel_mask = config.channel_mask = AUDIO_CHANNEL_OUT_5POINT1;
+
+                flags = (AUDIO_OUTPUT_FLAG_NON_BLOCKING
+                         | AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD
+                         | AUDIO_OUTPUT_FLAG_DIRECT
+                         | AUDIO_OUTPUT_FLAG_COMPRESS_PASSTHROUGH);
+                devices = AUDIO_DEVICE_OUT_AUX_DIGITAL;
+
+                DEBUG_MSG("Opening Transcode Passthrough out(outputenum=%d) session 0x%x with below params",
+                        QAP_OUT_TRANSCODE_PASSTHROUGH,
+                        (int)qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]);
+
+                DEBUG_MSG("sample rate=%d bitwidth=%d format = 0x%x channel mask=0x%x flags=0x%x device =0x%x",
+                    config.sample_rate,
+                    config.offload_info.bit_width,
+                    config.offload_info.format,
+                    config.offload_info.channel_mask,
+                    flags,
+                    devices);
+
+                ret = adev_open_output_stream((struct audio_hw_device *)p_qap->adev,
+                                              QAP_DEFAULT_COMPR_PASSTHROUGH_HANDLE,
+                                              devices,
+                                              flags,
+                                              &config,
+                                              (struct audio_stream_out **)&(qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]),
+                                              NULL);
+                if (ret < 0) {
+                    ERROR_MSG("Failed opening Transcode Passthrough out(outputenum=%d) session 0x%x",
+                            QAP_OUT_TRANSCODE_PASSTHROUGH,
+                            (int)qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]);
+                    pthread_mutex_unlock(&p_qap->lock);
+                    return;
+                } else
+                    DEBUG_MSG("Opened Transcode Passthrough out(outputenum=%d) session 0x%x",
+                            QAP_OUT_TRANSCODE_PASSTHROUGH,
+                            (int)qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]);
+
+
+                if (format == AUDIO_FORMAT_E_AC3) {
+                    qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]->compr_config.fragment_size =
+                            COMPRESS_PASSTHROUGH_DDP_FRAGMENT_SIZE;
+                }
+                qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]->compr_config.fragments =
+                        COMPRESS_OFFLOAD_NUM_FRAGMENTS;
+
+                p_qap->passthrough_enabled = true;
+            }
+
+            if (qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]) {
+                DEBUG_MSG_VV("Writing Bytes(%d) to QAP_OUT_TRANSCODE_PASSTHROUGH output(%p) buff ptr(%p)",
+                    buffer_size, qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH],
+                    data_buffer_p);
+                ret = qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH]->stream.write(
+                        (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_TRANSCODE_PASSTHROUGH],
+                        data_buffer_p,
+                        buffer_size);
+            }
+        }
+        else if ((device & AUDIO_DEVICE_OUT_AUX_DIGITAL)
+                   && (p_qap->hdmi_connect)
+                   && (p_qap->hdmi_sink_channels > 2)) {
+
+            /* CASE 2: Multi-Channel PCM output to HDMI.
+             * If any other HDMI output is already enabled then this has to be dropped.
+             */
+
+            if (p_qap->passthrough_enabled) {
+                //Closing all the multi-Channel PCM HDMI output stream from QAP.
+                close_all_pcm_hdmi_output_l();
+
+                //If passthrough is active then pcm hdmi output has to be dropped.
+                pthread_mutex_unlock(&p_qap->lock);
+                DEBUG_MSG("Compressed passthrough enabled, DROPPING DATA!");
+                return;
+            }
+
+            /* If Media format was changed for this stream then need to re-create the stream. */
+            if (need_to_recreate_stream && qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]) {
+                DEBUG_MSG("closing MCH PCM session ox%x", (int)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]);
+                adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                         (struct audio_stream_out *)(qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]));
+                qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH] = NULL;
+                p_qap->mch_pcm_hdmi_enabled = false;
+            }
+
+            if (!p_qap->mch_pcm_hdmi_enabled && !(qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH])) {
+                audio_devices_t devices;
+
+                if (event_id == AUDIO_DATA_EVENT) {
+                    config.offload_info.format = config.format = AUDIO_FORMAT_PCM_16_BIT;
+
+                    if (p_qap->hdmi_sink_channels == 8) {
+                        config.offload_info.channel_mask = config.channel_mask =
+                                AUDIO_CHANNEL_OUT_7POINT1;
+                    } else if (p_qap->hdmi_sink_channels == 6) {
+                        config.offload_info.channel_mask = config.channel_mask =
+                                AUDIO_CHANNEL_OUT_5POINT1;
+                    } else {
+                        config.offload_info.channel_mask = config.channel_mask =
+                                AUDIO_CHANNEL_OUT_STEREO;
+                    }
+                }
+
+                devices = AUDIO_DEVICE_OUT_AUX_DIGITAL;
+                flags = AUDIO_OUTPUT_FLAG_DIRECT;
+
+                DEBUG_MSG("Opening MCH PCM out(outputenum=%d) session ox%x with below params",
+                    QAP_OUT_OFFLOAD_MCH,
+                    (int)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]);
+
+                DEBUG_MSG("sample rate=%d bitwidth=%d format = 0x%x channel mask=0x%x flags=0x%x device =0x%x",
+                    config.sample_rate,
+                    config.offload_info.bit_width,
+                    config.offload_info.format,
+                    config.offload_info.channel_mask,
+                    flags,
+                    devices);
+
+                ret = adev_open_output_stream((struct audio_hw_device *)p_qap->adev,
+                                              QAP_DEFAULT_COMPR_AUDIO_HANDLE,
+                                              devices,
+                                              flags,
+                                              &config,
+                                              (struct audio_stream_out **)&(qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]),
+                                              NULL);
+                if (ret < 0) {
+                    ERROR_MSG("Failed opening MCH PCM out(outputenum=%d) session ox%x",
+                        QAP_OUT_OFFLOAD_MCH,
+                        (int)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]);
+                    pthread_mutex_unlock(&p_qap->lock);
+                    return;
+                    } else
+                        DEBUG_MSG("Opened MCH PCM out(outputenum=%d) session ox%x",
+                            QAP_OUT_OFFLOAD_MCH,
+                            (int)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]);
+
+                set_out_stream_channel_map(qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH], new_conf);
+
+                qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->compr_config.fragments =
+                        COMPRESS_OFFLOAD_NUM_FRAGMENTS;
+                qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->compr_config.fragment_size =
+                        qap_get_pcm_offload_output_buffer_size(qap_mod, &config.offload_info);
+
+                p_qap->mch_pcm_hdmi_enabled = true;
+
+                if ((qap_mod->stream_in[QAP_IN_MAIN]
+                    && qap_mod->stream_in[QAP_IN_MAIN]->client_callback != NULL) ||
+                    (qap_mod->stream_in[QAP_IN_MAIN_2]
+                    && qap_mod->stream_in[QAP_IN_MAIN_2]->client_callback != NULL)) {
+
+                    if (qap_mod->stream_in[QAP_IN_MAIN]) {
+                        qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->stream.set_callback(
+                            (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH],
+                            qap_mod->stream_in[QAP_IN_MAIN]->client_callback,
+                            qap_mod->stream_in[QAP_IN_MAIN]->client_cookie);
+                    }
+                    if (qap_mod->stream_in[QAP_IN_MAIN_2]) {
+                        qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->stream.set_callback(
+                            (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH],
+                            qap_mod->stream_in[QAP_IN_MAIN_2]->client_callback,
+                            qap_mod->stream_in[QAP_IN_MAIN_2]->client_cookie);
+                    }
+                } else if (qap_mod->stream_in[QAP_IN_PCM]
+                           && qap_mod->stream_in[QAP_IN_PCM]->client_callback != NULL) {
+
+                    qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->stream.set_callback(
+                            (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH],
+                            qap_mod->stream_in[QAP_IN_PCM]->client_callback,
+                            qap_mod->stream_in[QAP_IN_PCM]->client_cookie);
+                }
+            }
+            if (qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]) {
+                DEBUG_MSG_VV("Writing Bytes(%d) to QAP_OUT_OFFLOAD_MCH output(%p) buff ptr(%p)",
+                    buffer_size, qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH],
+                    data_buffer_p);
+                ret = qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH]->stream.write(
+                        (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD_MCH],
+                        data_buffer_p,
+                        buffer_size);
+            }
+        }
+        else {
+            /* CASE 3: PCM output.
+             */
+
+            /* If Media format was changed for this stream then need to re-create the stream. */
+            if (need_to_recreate_stream && qap_mod->stream_out[QAP_OUT_OFFLOAD]) {
+                DEBUG_MSG("closing PCM session ox%x", (int)qap_mod->stream_out[QAP_OUT_OFFLOAD]);
+                adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                         (struct audio_stream_out *)(qap_mod->stream_out[QAP_OUT_OFFLOAD]));
+                qap_mod->stream_out[QAP_OUT_OFFLOAD] = NULL;
+            }
+
+            bt_stream = audio_extn_bt_hal_get_output_stream(qap_mod->bt_hdl);
+            if (bt_stream != NULL) {
+                if (qap_mod->stream_out[QAP_OUT_OFFLOAD]) {
+                    adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                             (struct audio_stream_out *)(qap_mod->stream_out[QAP_OUT_OFFLOAD]));
+                    qap_mod->stream_out[QAP_OUT_OFFLOAD] = NULL;
+                }
+
+                audio_extn_bt_hal_out_write(p_qap->bt_hdl, data_buffer_p, buffer_size);
+            } else if (NULL == qap_mod->stream_out[QAP_OUT_OFFLOAD]) {
+                audio_devices_t devices;
+
+                if (qap_mod->stream_in[QAP_IN_MAIN])
+                    devices = qap_mod->stream_in[QAP_IN_MAIN]->devices;
+                else
+                    devices = qap_mod->stream_in[QAP_IN_PCM]->devices;
+
+                //If multi channel pcm or passthrough is already enabled then remove the hdmi flag from device.
+                if (p_qap->mch_pcm_hdmi_enabled || p_qap->passthrough_enabled) {
+                    if (devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)
+                        devices ^= AUDIO_DEVICE_OUT_AUX_DIGITAL;
+                }
+                if (devices == 0) {
+                    devices = device;
+                }
+
+                flags = AUDIO_OUTPUT_FLAG_DIRECT;
+
+
+                DEBUG_MSG("Opening Stereo PCM out(outputenum=%d) session ox%x with below params",
+                    QAP_OUT_OFFLOAD,
+                    (int)qap_mod->stream_out[QAP_OUT_OFFLOAD]);
+
+
+                DEBUG_MSG("sample rate=%d bitwidth=%d format = 0x%x channel mask=0x%x flags=0x%x device =0x%x",
+                    config.sample_rate,
+                    config.offload_info.bit_width,
+                    config.offload_info.format,
+                    config.offload_info.channel_mask,
+                    flags,
+                    devices);
+
+
+                /* TODO:: Need to Propagate errors to framework */
+                ret = adev_open_output_stream((struct audio_hw_device *)p_qap->adev,
+                                              QAP_DEFAULT_COMPR_AUDIO_HANDLE,
+                                              devices,
+                                              flags,
+                                              &config,
+                                              (struct audio_stream_out **)&(qap_mod->stream_out[QAP_OUT_OFFLOAD]),
+                                              NULL);
+                if (ret < 0) {
+                    ERROR_MSG("Failed opening Stereo PCM out(outputenum=%d) session ox%x",
+                        QAP_OUT_OFFLOAD,
+                        (int)qap_mod->stream_out[QAP_OUT_OFFLOAD]);
+                    pthread_mutex_unlock(&p_qap->lock);
+                    return;
+                } else
+                    DEBUG_MSG("Opened Stereo PCM out(outputenum=%d) session ox%x",
+                        QAP_OUT_OFFLOAD,
+                        (int)qap_mod->stream_out[QAP_OUT_OFFLOAD]);
+
+                set_out_stream_channel_map(qap_mod->stream_out[QAP_OUT_OFFLOAD], new_conf);
+
+                if ((qap_mod->stream_in[QAP_IN_MAIN]
+                    && qap_mod->stream_in[QAP_IN_MAIN]->client_callback != NULL) ||
+                    (qap_mod->stream_in[QAP_IN_MAIN_2]
+                    && qap_mod->stream_in[QAP_IN_MAIN_2]->client_callback != NULL)) {
+
+                    if (qap_mod->stream_in[QAP_IN_MAIN]) {
+                        qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.set_callback(
+                            (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD],
+                            qap_mod->stream_in[QAP_IN_MAIN]->client_callback,
+                            qap_mod->stream_in[QAP_IN_MAIN]->client_cookie);
+                    }
+                    if (qap_mod->stream_in[QAP_IN_MAIN_2]) {
+                        qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.set_callback(
+                            (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD],
+                            qap_mod->stream_in[QAP_IN_MAIN_2]->client_callback,
+                            qap_mod->stream_in[QAP_IN_MAIN_2]->client_cookie);
+                    }
+                } else if (qap_mod->stream_in[QAP_IN_PCM]
+                           && qap_mod->stream_in[QAP_IN_PCM]->client_callback != NULL) {
+
+                    qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.set_callback(
+                                                (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD],
+                                                qap_mod->stream_in[QAP_IN_PCM]->client_callback,
+                                                qap_mod->stream_in[QAP_IN_PCM]->client_cookie);
+                }
+
+                qap_mod->stream_out[QAP_OUT_OFFLOAD]->compr_config.fragments =
+                        COMPRESS_OFFLOAD_NUM_FRAGMENTS;
+                qap_mod->stream_out[QAP_OUT_OFFLOAD]->compr_config.fragment_size =
+                        qap_get_pcm_offload_output_buffer_size(qap_mod, &config.offload_info);
+
+                if (qap_mod->is_vol_set) {
+                    DEBUG_MSG("Setting Volume Left[%f], Right[%f]", qap_mod->vol_left, qap_mod->vol_right);
+                    qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.set_volume(
+                            (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD],
+                            qap_mod->vol_left,
+                            qap_mod->vol_right);
+                }
+            }
+
+            if (qap_mod->stream_out[QAP_OUT_OFFLOAD]) {
+                DEBUG_MSG_VV("Writing Bytes(%d) to QAP_OUT_OFFLOAD output(%p) buff ptr(%p)",
+                    buffer_size, qap_mod->stream_out[QAP_OUT_OFFLOAD],
+                    data_buffer_p);
+                ret = qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.write(
+                        (struct audio_stream_out *)qap_mod->stream_out[QAP_OUT_OFFLOAD],
+                        data_buffer_p,
+                        buffer_size);
+            }
+        }
+        DEBUG_MSG_VV("Bytes consumed [%d] by Audio HAL", ret);
+    }
+    else if (event_id == QAP_CALLBACK_EVENT_EOS
+               || event_id == QAP_CALLBACK_EVENT_MAIN_2_EOS
+               || event_id == QAP_CALLBACK_EVENT_EOS_ASSOC) {
+        struct stream_out *out = qap_mod->stream_in[QAP_IN_MAIN];
+        struct stream_out *out_pcm = qap_mod->stream_in[QAP_IN_PCM];
+        struct stream_out *out_main2 = qap_mod->stream_in[QAP_IN_MAIN_2];
+        struct stream_out *out_assoc = qap_mod->stream_in[QAP_IN_ASSOC];
+
+        /**
+         * TODO:: Only DD/DDP Associate Eos is handled, need to add support
+         * for other formats.
+         */
+        if (event_id == QAP_CALLBACK_EVENT_EOS
+                && (out_pcm != NULL)
+                && (check_stream_state_l(out_pcm, STOPPING))) {
+
+            lock_output_stream_l(out_pcm);
+            out_pcm->client_callback(STREAM_CBK_EVENT_DRAIN_READY, NULL, out_pcm->client_cookie);
+            set_stream_state_l(out_pcm, STOPPED);
+            unlock_output_stream_l(out_pcm);
+            DEBUG_MSG("sent pcm DRAIN_READY");
+        } else if ( event_id == QAP_CALLBACK_EVENT_EOS_ASSOC
+                && (out_assoc != NULL)
+                && (check_stream_state_l(out_assoc, STOPPING))) {
+
+            lock_output_stream_l(out_assoc);
+            out_assoc->client_callback(STREAM_CBK_EVENT_DRAIN_READY, NULL, out_assoc->client_cookie);
+            set_stream_state_l(out_assoc, STOPPED);
+            unlock_output_stream_l(out_assoc);
+            DEBUG_MSG("sent associated DRAIN_READY");
+        } else if (event_id == QAP_CALLBACK_EVENT_MAIN_2_EOS
+                && (out_main2 != NULL)
+                && (check_stream_state_l(out_main2, STOPPING))) {
+
+            lock_output_stream_l(out_main2);
+            out_main2->client_callback(STREAM_CBK_EVENT_DRAIN_READY, NULL, out_main2->client_cookie);
+            set_stream_state_l(out_main2, STOPPED);
+            unlock_output_stream_l(out_main2);
+            DEBUG_MSG("sent main2 DRAIN_READY");
+        } else if ((out != NULL) && (check_stream_state_l(out, STOPPING))) {
+            lock_output_stream_l(out);
+            out->client_callback(STREAM_CBK_EVENT_DRAIN_READY, NULL, out->client_cookie);
+            set_stream_state_l(out, STOPPED);
+            unlock_output_stream_l(out);
+            DEBUG_MSG("sent main DRAIN_READY");
+        }
+    }
+    else if (event_id == QAP_CALLBACK_EVENT_EOS || event_id == QAP_CALLBACK_EVENT_EOS_ASSOC) {
+        struct stream_out *out = NULL;
+
+        if (event_id == QAP_CALLBACK_EVENT_EOS) {
+            out = qap_mod->stream_in[QAP_IN_MAIN];
+        } else {
+            out = qap_mod->stream_in[QAP_IN_ASSOC];
+        }
+
+        if ((out != NULL) && (check_stream_state_l(out, STOPPING))) {
+            lock_output_stream_l(out);
+            out->client_callback(STREAM_CBK_EVENT_DRAIN_READY, NULL, out->client_cookie);
+            set_stream_state_l(out, STOPPED);
+            unlock_output_stream_l(out);
+            DEBUG_MSG("sent DRAIN_READY");
+        }
+    }
+
+    pthread_mutex_unlock(&p_qap->lock);
+    return;
+}
+
+static int qap_sess_close(struct qap_module* qap_mod)
+{
+    int j;
+    int ret = -EINVAL;
+
+    DEBUG_MSG("Closing Session.");
+
+    //Check if all streams are closed or not.
+    for (j = 0; j < MAX_QAP_MODULE_IN; j++) {
+        if (qap_mod->stream_in[j] != NULL) {
+            break;
+        }
+    }
+    if (j != MAX_QAP_MODULE_IN) {
+        DEBUG_MSG("Some stream is still active, Can not close session.");
+        return 0;
+    }
+
+    qap_mod->is_session_closing = true;
+    if(p_qap->qap_output_block_handling) {
+        pthread_mutex_lock(&qap_mod->session_output_lock);
+        if (qap_mod->is_session_output_active == false) {
+            pthread_cond_signal(&qap_mod->session_output_cond);
+            DEBUG_MSG("Wake up MM module output thread");
+        }
+        pthread_mutex_unlock(&qap_mod->session_output_lock);
+    }
+    pthread_mutex_lock(&p_qap->lock);
+
+    if (!qap_mod || !qap_mod->session_handle) {
+        ERROR_MSG("Wrong state to process qap_mod(%p) sess_hadl(%p)",
+            qap_mod, qap_mod->session_handle);
+        return -EINVAL;
+    }
+
+    ret = qap_session_close(qap_mod->session_handle);
+    if (QAP_STATUS_OK != ret) {
+        ERROR_MSG("close session failed %d", ret);
+        return -EINVAL;
+    } else
+        DEBUG_MSG("Closed QAP session 0x%x", (int)qap_mod->session_handle);
+
+    qap_mod->session_handle = NULL;
+    qap_mod->is_vol_set = false;
+    memset(qap_mod->stream_state, 0, sizeof(qap_mod->stream_state));
+
+    qap_close_all_output_streams(qap_mod);
+
+    qap_mod->new_out_format_index = 0;
+
+    pthread_mutex_unlock(&p_qap->lock);
+    qap_mod->is_session_closing = false;
+    DEBUG_MSG("Exit.");
+
+    return 0;
+}
+
+static int qap_stream_close(struct stream_out *out)
+{
+    int ret = -EINVAL;
+    struct qap_module *qap_mod = NULL;
+    int index = -1;
+    DEBUG_MSG("Flag [0x%x], Stream handle [%p]", out->flags, out->qap_stream_handle);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    index = get_input_stream_index_l(out);
+
+    if (!qap_mod || !qap_mod->session_handle || (index < 0) || !out->qap_stream_handle) {
+        ERROR_MSG("Wrong state to process qap_mod(%p) sess_hadl(%p) strm hndl(%p), index %d",
+            qap_mod, qap_mod->session_handle, out->qap_stream_handle, index);
+        return -EINVAL;
+    }
+
+    pthread_mutex_lock(&p_qap->lock);
+
+    set_stream_state_l(out,STOPPED);
+    qap_mod->stream_in[index] = NULL;
+
+    lock_output_stream_l(out);
+
+    ret = qap_module_deinit(out->qap_stream_handle);
+    if (QAP_STATUS_OK != ret) {
+        ERROR_MSG("deinit failed %d", ret);
+        return -EINVAL;
+    } else
+        DEBUG_MSG("module(ox%x) closed successfully", (int)out->qap_stream_handle);
+
+
+    out->qap_stream_handle = NULL;
+    unlock_output_stream_l(out);
+
+    pthread_mutex_unlock(&p_qap->lock);
+
+    //If all streams are closed then close the session.
+    qap_sess_close(qap_mod);
+
+    DEBUG_MSG("Exit");
+    return ret;
+}
+
+#define MAX_INIT_PARAMS 6
+
+static void update_qap_session_init_params(audio_session_handle_t session_handle) {
+    DEBUG_MSG("Entry");
+    qap_status_t ret = QAP_STATUS_OK;
+    uint32_t cmd_data[MAX_INIT_PARAMS] = {0};
+
+    /* all init params should be sent
+     * together so gang them up.
+     */
+    cmd_data[0] = MS12_SESSION_CFG_MAX_CHS;
+    cmd_data[1] = 6;/*5.1 channels*/
+
+    cmd_data[2] = MS12_SESSION_CFG_BS_OUTPUT_MODE;
+    cmd_data[3] = 3;/*DDP Re-encoding and DDP to DD Transcoding*/
+
+    cmd_data[4] = MS12_SESSION_CFG_CHMOD_LOCKING;
+    cmd_data[MAX_INIT_PARAMS - 1] = 1;/*Lock to 6 channel*/
+
+    ret = qap_session_cmd(session_handle,
+            QAP_SESSION_CMD_SET_PARAM,
+            MAX_INIT_PARAMS * sizeof(uint32_t),
+            &cmd_data[0],
+            NULL,
+            NULL);
+    if (ret != QAP_STATUS_OK) {
+        ERROR_MSG("session init params config failed");
+    }
+    DEBUG_MSG("Exit");
+    return;
+}
+
+/* Query HDMI EDID and sets module output accordingly.*/
+static void qap_set_hdmi_configuration_to_module()
+{
+    int ret = 0;
+    int channels = 0;
+    char prop_value[PROPERTY_VALUE_MAX] = {0};
+    bool passth_support = false;
+    qap_session_outputs_config_t *session_outputs_config = NULL;
+
+
+    DEBUG_MSG("Entry");
+
+    if (!p_qap) {
+        return;
+    }
+
+    if (!p_qap->hdmi_connect) {
+        return;
+    }
+
+    p_qap->hdmi_sink_channels = 0;
+
+    if (p_qap->qap_mod[MS12].session_handle)
+        session_outputs_config = &p_qap->qap_mod[MS12].session_outputs_config;
+    else if (p_qap->qap_mod[DTS_M8].session_handle)
+        session_outputs_config = &p_qap->qap_mod[DTS_M8].session_outputs_config;
+    else {
+        DEBUG_MSG("HDMI connection comes even before session is setup");
+        return;
+    }
+
+    session_outputs_config->num_output = 1;
+    //QAP re-encoding and DSP offload passthrough is supported.
+    if (property_get_bool("vendor.audio.offload.passthrough", false)
+            && property_get_bool("vendor.audio.qap.reencode", false)) {
+
+        if (p_qap->qap_mod[MS12].session_handle) {
+
+            bool do_setparam = false;
+            property_get("vendor.audio.qap.hdmi.out", prop_value, NULL);
+
+            if (platform_is_edid_supported_format(p_qap->adev->platform, AUDIO_FORMAT_E_AC3)
+                    && (strncmp(prop_value, "ddp", 3) == 0)) {
+                do_setparam = true;
+                session_outputs_config->output_config[0].format = QAP_AUDIO_FORMAT_EAC3;
+                session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_HDMI|QAP_AUDIO_FORMAT_EAC3;
+            } else if (platform_is_edid_supported_format(p_qap->adev->platform, AUDIO_FORMAT_AC3)) {
+                do_setparam = true;
+                session_outputs_config->output_config[0].format = QAP_AUDIO_FORMAT_AC3;
+                session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_HDMI|QAP_AUDIO_FORMAT_AC3;
+            }
+            if (do_setparam) {
+                DEBUG_MSG(" Enabling HDMI(Passthrough out) from MS12 wrapper outputid=0x%x",
+                    session_outputs_config->output_config[0].id);
+                ret = qap_session_cmd(p_qap->qap_mod[MS12].session_handle,
+                                    QAP_SESSION_CMD_SET_OUTPUTS,
+                                    sizeof(qap_session_outputs_config_t),
+                                    session_outputs_config,
+                                    NULL,
+                                    NULL);
+                if (QAP_STATUS_OK != ret) {
+                    ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_HDMI device with QAP %d", ret);
+                    return;
+                }
+                passth_support = true;
+            }
+        }
+
+        if (p_qap->qap_mod[DTS_M8].session_handle) {
+
+            bool do_setparam = false;
+            if (platform_is_edid_supported_format(p_qap->adev->platform, AUDIO_FORMAT_DTS)) {
+                do_setparam = true;
+                session_outputs_config->output_config[0].format = QAP_AUDIO_FORMAT_DTS;
+                session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_HDMI|QAP_AUDIO_FORMAT_DTS;
+            }
+
+            if (do_setparam) {
+                ret = qap_session_cmd(p_qap->qap_mod[DTS_M8].session_handle,
+                                    QAP_SESSION_CMD_SET_OUTPUTS,
+                                    sizeof(qap_session_outputs_config_t),
+                                    session_outputs_config,
+                                    NULL,
+                                    NULL);
+                if (QAP_STATUS_OK != ret) {
+                    ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_HDMI device with QAP %d", ret);
+                    return;
+                }
+                passth_support = true;
+            }
+        }
+    }
+    //Compressed passthrough is not enabled.
+    if (!passth_support) {
+
+        channels = platform_edid_get_max_channels(p_qap->adev->platform);
+        session_outputs_config->output_config[0].format = QAP_AUDIO_FORMAT_PCM_16_BIT;
+
+        switch (channels) {
+            case 8:
+                DEBUG_MSG("Switching Qap output to 7.1 channels");
+                session_outputs_config->output_config[0].channels = 8;
+                if (!p_qap->qap_msmd_enabled)
+                    session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_HDMI|QAP_AUDIO_FORMAT_PCM_16_BIT;
+                p_qap->hdmi_sink_channels = channels;
+                break;
+            case 6:
+                DEBUG_MSG("Switching Qap output to 5.1 channels");
+                session_outputs_config->output_config[0].channels = 6;
+                if (!p_qap->qap_msmd_enabled)
+                    session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_HDMI|QAP_AUDIO_FORMAT_PCM_16_BIT;
+                p_qap->hdmi_sink_channels = channels;
+                break;
+            default:
+                DEBUG_MSG("Switching Qap output to default channels");
+                session_outputs_config->output_config[0].channels = 2;
+                if (!p_qap->qap_msmd_enabled)
+                    session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_HDMI|QAP_AUDIO_FORMAT_PCM_16_BIT;
+                p_qap->hdmi_sink_channels = 2;
+                break;
+        }
+
+        if (p_qap->qap_mod[MS12].session_handle) {
+            DEBUG_MSG(" Enabling HDMI(MCH PCM out) from MS12 wrapper outputid = %x", session_outputs_config->output_config[0].id);
+            ret = qap_session_cmd(p_qap->qap_mod[MS12].session_handle,
+                                QAP_SESSION_CMD_SET_OUTPUTS,
+                                sizeof(qap_session_outputs_config_t),
+                                session_outputs_config,
+                                NULL,
+                                NULL);
+            if (QAP_STATUS_OK != ret) {
+                ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_HDMI device with QAP %d", ret);
+                return;
+            }
+        }
+        if (p_qap->qap_mod[DTS_M8].session_handle) {
+                ret = qap_session_cmd(p_qap->qap_mod[MS12].session_handle,
+                                    QAP_SESSION_CMD_SET_OUTPUTS,
+                                    sizeof(qap_session_outputs_config_t),
+                                    session_outputs_config,
+                                    NULL,
+                                    NULL);
+                if (QAP_STATUS_OK != ret) {
+                    ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_HDMI device with QAP %d", ret);
+                    return;
+                }
+            }
+
+    }
+    DEBUG_MSG("Exit");
+}
+
+
+static void qap_set_default_configuration_to_module()
+{
+    qap_session_outputs_config_t *session_outputs_config = NULL;
+    int ret = 0;
+
+    DEBUG_MSG("Entry");
+
+    if (!p_qap) {
+        return;
+    }
+
+    if (!p_qap->bt_connect) {
+        DEBUG_MSG("BT is not connected.");
+    }
+
+    //ms12 wrapper don't support bt, treat this as speaker and routign to bt
+    //will take care as a part of data callback notifier
+
+
+    if (p_qap->qap_mod[MS12].session_handle)
+        session_outputs_config = &p_qap->qap_mod[MS12].session_outputs_config;
+    else if (p_qap->qap_mod[DTS_M8].session_handle)
+        session_outputs_config = &p_qap->qap_mod[DTS_M8].session_outputs_config;
+
+    session_outputs_config->num_output = 1;
+    session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_SPEAKER;
+    session_outputs_config->output_config[0].format = QAP_AUDIO_FORMAT_PCM_16_BIT;
+
+
+    if (p_qap->qap_mod[MS12].session_handle) {
+        DEBUG_MSG(" Enabling speaker(PCM out) from MS12 wrapper outputid = %x", session_outputs_config->output_config[0].id);
+        ret = qap_session_cmd(p_qap->qap_mod[MS12].session_handle,
+                            QAP_SESSION_CMD_SET_OUTPUTS,
+                            sizeof(qap_session_outputs_config_t),
+                            session_outputs_config,
+                            NULL,
+                            NULL);
+        if (QAP_STATUS_OK != ret) {
+            ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_SPEAKER device with QAP %d", ret);
+            return;
+        }
+    }
+    if (p_qap->qap_mod[DTS_M8].session_handle) {
+        ret = qap_session_cmd(p_qap->qap_mod[DTS_M8].session_handle,
+                            QAP_SESSION_CMD_SET_OUTPUTS,
+                            sizeof(qap_session_outputs_config_t),
+                            session_outputs_config,
+                            NULL,
+                            NULL);
+        if (QAP_STATUS_OK != ret) {
+            ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_SPEAKER device with QAP %d", ret);
+            return;
+        }
+    }
+}
+
+
+/* Open a MM module session with QAP. */
+static int audio_extn_qap_session_open(mm_module_type mod_type, __unused struct stream_out *out)
+{
+    DEBUG_MSG("%s %d", __func__, __LINE__);
+    int ret = 0;
+
+    struct qap_module *qap_mod = NULL;
+
+    if (mod_type >= MAX_MM_MODULE_TYPE)
+        return -ENOTSUP; //Not supported by QAP module.
+
+    pthread_mutex_lock(&p_qap->lock);
+
+    qap_mod = &(p_qap->qap_mod[mod_type]);
+
+    //If session is already opened then return.
+    if (qap_mod->session_handle) {
+        DEBUG_MSG("QAP Session is already opened.");
+        pthread_mutex_unlock(&p_qap->lock);
+        return 0;
+    }
+
+    if (MS12 == mod_type) {
+        if (NULL == (qap_mod->session_handle = (void *)qap_session_open(QAP_SESSION_MS12_OTT, qap_mod->qap_lib))) {
+            ERROR_MSG("Failed to open QAP session, lib_handle 0x%x", (int)qap_mod->qap_lib);
+            ret = -EINVAL;
+            goto exit;
+        } else
+            DEBUG_MSG("Opened QAP session 0x%x", (int)qap_mod->session_handle);
+
+        update_qap_session_init_params(qap_mod->session_handle);
+    }
+
+    if (QAP_STATUS_OK != (qap_session_set_callback (qap_mod->session_handle, &qap_session_callback, (void *)qap_mod))) {
+        ERROR_MSG("Failed to register QAP session callback");
+        ret = -EINVAL;
+        goto exit;
+    }
+
+    qap_mod->is_session_output_active = true;
+
+    if(p_qap->hdmi_connect)
+        qap_set_hdmi_configuration_to_module();
+    else
+        qap_set_default_configuration_to_module();
+
+exit:
+    pthread_mutex_unlock(&p_qap->lock);
+    return ret;
+}
+
+
+
+static int qap_map_input_format(audio_format_t audio_format, qap_audio_format_t *format)
+{
+    if (audio_format == AUDIO_FORMAT_AC3) {
+        *format = QAP_AUDIO_FORMAT_AC3;
+        DEBUG_MSG( "File Format is AC3!");
+    } else if (audio_format == AUDIO_FORMAT_E_AC3) {
+        *format = QAP_AUDIO_FORMAT_EAC3;
+        DEBUG_MSG( "File Format is E_AC3!");
+    } else if ((audio_format == AUDIO_FORMAT_AAC_ADTS_LC) ||
+               (audio_format == AUDIO_FORMAT_AAC_ADTS_HE_V1) ||
+               (audio_format == AUDIO_FORMAT_AAC_ADTS_HE_V2) ||
+               (audio_format == AUDIO_FORMAT_AAC_LC) ||
+               (audio_format == AUDIO_FORMAT_AAC_HE_V1) ||
+               (audio_format == AUDIO_FORMAT_AAC_HE_V2) ||
+               (audio_format == AUDIO_FORMAT_AAC_LATM_LC) ||
+               (audio_format == AUDIO_FORMAT_AAC_LATM_HE_V1) ||
+               (audio_format == AUDIO_FORMAT_AAC_LATM_HE_V2)) {
+        *format = QAP_AUDIO_FORMAT_AAC_ADTS;
+        DEBUG_MSG( "File Format is AAC!");
+    } else if (audio_format == AUDIO_FORMAT_DTS) {
+        *format = QAP_AUDIO_FORMAT_DTS;
+        DEBUG_MSG( "File Format is DTS!");
+    } else if (audio_format == AUDIO_FORMAT_DTS_HD) {
+        *format = QAP_AUDIO_FORMAT_DTS_HD;
+        DEBUG_MSG( "File Format is DTS_HD!");
+    } else if (audio_format == AUDIO_FORMAT_PCM_16_BIT) {
+        *format = QAP_AUDIO_FORMAT_PCM_16_BIT;
+        DEBUG_MSG( "File Format is PCM_16!");
+    } else if (audio_format == AUDIO_FORMAT_PCM_32_BIT) {
+        *format = QAP_AUDIO_FORMAT_PCM_32_BIT;
+        DEBUG_MSG( "File Format is PCM_32!");
+    } else if (audio_format == AUDIO_FORMAT_PCM_24_BIT_PACKED) {
+        *format = QAP_AUDIO_FORMAT_PCM_24_BIT_PACKED;
+        DEBUG_MSG( "File Format is PCM_24!");
+    } else if ((audio_format == AUDIO_FORMAT_PCM_8_BIT) ||
+               (audio_format == AUDIO_FORMAT_PCM_8_24_BIT)) {
+        *format = QAP_AUDIO_FORMAT_PCM_8_24_BIT;
+        DEBUG_MSG( "File Format is PCM_8_24!");
+    } else {
+        ERROR_MSG( "File Format not supported!");
+        return -EINVAL;
+    }
+    return 0;
+}
+
+
+void qap_module_callback(__unused qap_module_handle_t module_handle,
+                         void* priv_data,
+                         qap_module_callback_event_t event_id,
+                         __unused int size,
+                         __unused void *data)
+{
+    struct stream_out *out=(struct stream_out *)priv_data;
+
+    DEBUG_MSG("Entry");
+    if (QAP_MODULE_CALLBACK_EVENT_SEND_INPUT_BUFFER == event_id) {
+        DEBUG_MSG("QAP_MODULE_CALLBACK_EVENT_SEND_INPUT_BUFFER for (%p)", out);
+        if (out->client_callback) {
+            out->client_callback(STREAM_CBK_EVENT_WRITE_READY, NULL, out->client_cookie);
+        }
+        else
+            DEBUG_MSG("client has no callback registered, no action needed for this event %d",
+                event_id);
+    }
+    else
+        DEBUG_MSG("Un Recognized event %d", event_id);
+
+    DEBUG_MSG("exit");
+    return;
+}
+
+
+/* opens a stream in QAP module. */
+static int qap_stream_open(struct stream_out *out,
+                           struct audio_config *config,
+                           audio_output_flags_t flags,
+                           audio_devices_t devices)
+{
+    int status = -EINVAL;
+    mm_module_type mmtype = get_mm_module_for_format_l(config->format);
+    struct qap_module* qap_mod = NULL;
+    qap_module_config_t input_config = {0};
+
+    DEBUG_MSG("Flags 0x%x, Device 0x%x for use case %s out 0x%x", flags, devices, use_case_table[out->usecase], (int)out);
+
+    if (mmtype >= MAX_MM_MODULE_TYPE) {
+        ERROR_MSG("Unsupported Stream");
+        return -ENOTSUP;
+    }
+
+    //Open the module session, if not opened already.
+    status = audio_extn_qap_session_open(mmtype, out);
+    qap_mod = &(p_qap->qap_mod[mmtype]);
+
+    if ((status != 0) || (!qap_mod->session_handle ))
+        return status;
+
+    input_config.sample_rate = config->sample_rate;
+    input_config.channels = popcount(config->channel_mask);
+    if (input_config.format != AUDIO_FORMAT_PCM_16_BIT) {
+        input_config.format &= AUDIO_FORMAT_MAIN_MASK;
+    }
+    input_config.module_type = QAP_MODULE_DECODER;
+    status = qap_map_input_format(config->format, &input_config.format);
+    if (status == -EINVAL)
+        return -EINVAL;
+
+    DEBUG_MSG("qap_stream_open sample_rate(%d) channels(%d) devices(%#x) flags(%#x) format(%#x)",
+              input_config.sample_rate, input_config.channels, devices, flags, input_config.format);
+
+    if (input_config.format == QAP_AUDIO_FORMAT_PCM_16_BIT) {
+        //If PCM stream is already opened then fail this stream open.
+        if (qap_mod->stream_in[QAP_IN_PCM]) {
+            ERROR_MSG("PCM input is already active.");
+            return -ENOTSUP;
+        }
+        input_config.flags = QAP_MODULE_FLAG_SYSTEM_SOUND;
+        status = qap_module_init(qap_mod->session_handle, &input_config, &out->qap_stream_handle);
+        if (QAP_STATUS_OK != status) {
+            ERROR_MSG("Unable to open PCM(QAP_MODULE_FLAG_SYSTEM_SOUND) QAP module %d", status);
+            return -EINVAL;
+        } else
+            DEBUG_MSG("QAP_MODULE_FLAG_SYSTEM_SOUND, module(ox%x) opened successfully", (int)out->qap_stream_handle);
+
+        qap_mod->stream_in[QAP_IN_PCM] = out;
+    } else if ((flags & AUDIO_OUTPUT_FLAG_MAIN) && (flags & AUDIO_OUTPUT_FLAG_ASSOCIATED)) {
+        if (is_main_active_l(qap_mod) || is_dual_main_active_l(qap_mod)) {
+            ERROR_MSG("Dual Main or Main already active. So, Cannot open main and associated stream");
+            return -EINVAL;
+        } else {
+            input_config.flags = QAP_MODULE_FLAG_PRIMARY;
+            status = qap_module_init(qap_mod->session_handle, &input_config, &out->qap_stream_handle);
+            if (QAP_STATUS_OK != status) {
+                ERROR_MSG("Unable to open QAP stream/module with QAP_MODULE_FLAG_PRIMARY flag %d", status);
+                return -EINVAL;
+                } else
+                    DEBUG_MSG("QAP_MODULE_FLAG_PRIMARY, module opened successfully 0x%x", (int)out->qap_stream_handle);;
+
+            qap_mod->stream_in[QAP_IN_MAIN] = out;
+        }
+    } else if ((flags & AUDIO_OUTPUT_FLAG_MAIN) || ((!(flags & AUDIO_OUTPUT_FLAG_MAIN)) && (!(flags & AUDIO_OUTPUT_FLAG_ASSOCIATED)))) {
+        /* Assume Main if no flag is set */
+        if (is_dual_main_active_l(qap_mod)) {
+            ERROR_MSG("Dual Main already active. So, Cannot open main stream");
+            return -EINVAL;
+        } else if (is_main_active_l(qap_mod) && qap_mod->stream_in[QAP_IN_ASSOC]) {
+            ERROR_MSG("Main and Associated already active. So, Cannot open main stream");
+            return -EINVAL;
+        } else if (is_main_active_l(qap_mod) && (mmtype != MS12)) {
+            ERROR_MSG("Main already active and Not an MS12 format. So, Cannot open another main stream");
+            return -EINVAL;
+        } else {
+            input_config.flags = QAP_MODULE_FLAG_PRIMARY;
+            status = qap_module_init(qap_mod->session_handle, &input_config, &out->qap_stream_handle);
+            if (QAP_STATUS_OK != status) {
+                ERROR_MSG("Unable to open QAP stream/module with QAP_MODULE_FLAG_PRIMARY flag %d", status);
+                return -EINVAL;
+            } else
+                DEBUG_MSG("QAP_MODULE_FLAG_PRIMARY, module opened successfully 0x%x", (int)out->qap_stream_handle);
+
+            if(qap_mod->stream_in[QAP_IN_MAIN]) {
+                qap_mod->stream_in[QAP_IN_MAIN_2] = out;
+            } else {
+                qap_mod->stream_in[QAP_IN_MAIN] = out;
+            }
+        }
+    } else if ((flags & AUDIO_OUTPUT_FLAG_ASSOCIATED)) {
+        if (is_dual_main_active_l(qap_mod)) {
+            ERROR_MSG("Dual Main already active. So, Cannot open associated stream");
+            return -EINVAL;
+        } else if (!is_main_active_l(qap_mod)) {
+            ERROR_MSG("Main not active. So, Cannot open associated stream");
+            return -EINVAL;
+        } else if (qap_mod->stream_in[QAP_IN_ASSOC]) {
+            ERROR_MSG("Associated already active. So, Cannot open associated stream");
+            return -EINVAL;
+        }
+        input_config.flags = QAP_MODULE_FLAG_SECONDARY;
+        status = qap_module_init(qap_mod->session_handle, &input_config, &out->qap_stream_handle);
+        if (QAP_STATUS_OK != status) {
+            ERROR_MSG("Unable to open QAP stream/module with QAP_MODULE_FLAG_SECONDARY flag %d", status);
+            return -EINVAL;
+        } else
+            DEBUG_MSG("QAP_MODULE_FLAG_SECONDARY, module opened successfully 0x%x", (int)out->qap_stream_handle);
+
+        qap_mod->stream_in[QAP_IN_ASSOC] = out;
+    }
+
+    if (out->qap_stream_handle) {
+        status = qap_module_set_callback(out->qap_stream_handle, &qap_module_callback, out);
+        if (QAP_STATUS_OK != status) {
+            ERROR_MSG("Unable to register module callback %d", status);
+            return -EINVAL;
+        } else
+            DEBUG_MSG("Module call back registered 0x%x cookie 0x%x", (int)out->qap_stream_handle, (int)out);
+    }
+
+    if (status != 0) {
+        //If no stream is active then close the session.
+        qap_sess_close(qap_mod);
+        return 0;
+    }
+
+    //If Device is HDMI, QAP passthrough is enabled and there is no previous QAP passthrough input stream.
+    if ((!p_qap->passthrough_in)
+        && (devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)
+        && audio_extn_qap_passthrough_enabled(out)) {
+        //Assign the QAP passthrough input stream.
+        p_qap->passthrough_in = out;
+
+        //If HDMI is connected and format is supported by HDMI then create QAP passthrough output stream.
+        if (p_qap->hdmi_connect
+            && platform_is_edid_supported_format(p_qap->adev->platform, out->format)) {
+            status = create_qap_passthrough_stream_l();
+            if (status < 0) {
+                qap_stream_close(out);
+                ERROR_MSG("QAP passthrough stream creation failed with error %d", status);
+                return status;
+            }
+        }
+        /*Else: since QAP passthrough input stream is already initialized,
+         * when hdmi is connected
+         * then qap passthrough output stream will be created.
+         */
+    }
+
+    DEBUG_MSG();
+    return status;
+}
+
+static int qap_out_resume(struct audio_stream_out* stream)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    int status = 0;
+    DEBUG_MSG("Output Stream %p", out);
+
+
+    lock_output_stream_l(out);
+
+    //If QAP passthrough is active then block the resume on module input streams.
+    if (p_qap->passthrough_out) {
+        //If resume is received for the QAP passthrough stream then call the primary HAL api.
+        pthread_mutex_lock(&p_qap->lock);
+        if (p_qap->passthrough_in == out) {
+            status = p_qap->passthrough_out->stream.resume(
+                    (struct audio_stream_out*)p_qap->passthrough_out);
+            if (!status) out->offload_state = OFFLOAD_STATE_PLAYING;
+        }
+        pthread_mutex_unlock(&p_qap->lock);
+    } else {
+        //Flush the module input stream.
+        status = qap_stream_start_l(out);
+    }
+
+    unlock_output_stream_l(out);
+
+    DEBUG_MSG();
+    return status;
+}
+
+static int qap_out_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+    struct str_parms *parms;
+    char value[32];
+    int val = 0;
+    struct stream_out *out = (struct stream_out *)stream;
+    int ret = 0;
+    int err = 0;
+    struct qap_module *qap_mod = NULL;
+
+    DEBUG_MSG("usecase(%d: %s) kvpairs: %s", out->usecase, use_case_table[out->usecase], kvpairs);
+
+    parms = str_parms_create_str(kvpairs);
+    err = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
+    if (err < 0)
+        return err;
+    val = atoi(value);
+
+    qap_mod = get_qap_module_for_input_stream_l(out);
+    if (!qap_mod) return (-EINVAL);
+
+    //TODO: HDMI is connected but user doesn't want HDMI output, close both HDMI outputs.
+
+    /* Setting new device information to the mm module input streams.
+     * This is needed if QAP module output streams are not created yet.
+     */
+    out->devices = val;
+
+#ifndef SPLIT_A2DP_ENABLED
+    if (val == AUDIO_DEVICE_OUT_BLUETOOTH_A2DP) {
+        //If device is BT then open the BT stream if not already opened.
+        if ( audio_extn_bt_hal_get_output_stream(qap_mod->bt_hdl) == NULL
+             && audio_extn_bt_hal_get_device(qap_mod->bt_hdl) != NULL) {
+            ret = audio_extn_bt_hal_open_output_stream(qap_mod->bt_hdl,
+                                                       QAP_OUTPUT_SAMPLING_RATE,
+                                                       AUDIO_CHANNEL_OUT_STEREO,
+                                                       CODEC_BACKEND_DEFAULT_BIT_WIDTH);
+            if (ret != 0) {
+                ERROR_MSG("BT Output stream open failure!");
+            }
+        }
+    } else if (val != 0) {
+        //If device is not BT then close the BT stream if already opened.
+        if ( audio_extn_bt_hal_get_output_stream(qap_mod->bt_hdl) != NULL) {
+            audio_extn_bt_hal_close_output_stream(qap_mod->bt_hdl);
+        }
+    }
+#endif
+
+    if (p_qap->passthrough_in == out) { //Device routing is received for QAP passthrough stream.
+
+        if (!(val & AUDIO_DEVICE_OUT_AUX_DIGITAL)) { //HDMI route is disabled.
+
+            //If QAP pasthrough output is enabled. Close it.
+            close_qap_passthrough_stream_l();
+
+            //Send the routing information to mm module pcm output.
+            if (qap_mod->stream_out[QAP_OUT_OFFLOAD]) {
+                ret = qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.common.set_parameters(
+                        (struct audio_stream *)qap_mod->stream_out[QAP_OUT_OFFLOAD], kvpairs);
+            }
+            //else: device info is updated in the input streams.
+        } else { //HDMI route is enabled.
+
+            //create the QAf passthrough stream, if not created already.
+            ret = create_qap_passthrough_stream_l();
+
+            if (p_qap->passthrough_out != NULL) { //If QAP passthrough out is enabled then send routing information.
+                ret = p_qap->passthrough_out->stream.common.set_parameters(
+                        (struct audio_stream *)p_qap->passthrough_out, kvpairs);
+            }
+        }
+    } else {
+        //Send the routing information to mm module pcm output.
+        if (qap_mod->stream_out[QAP_OUT_OFFLOAD]) {
+            ret = qap_mod->stream_out[QAP_OUT_OFFLOAD]->stream.common.set_parameters(
+                    (struct audio_stream *)qap_mod->stream_out[QAP_OUT_OFFLOAD], kvpairs);
+        }
+        //else: device info is updated in the input streams.
+    }
+    str_parms_destroy(parms);
+
+    return ret;
+}
+
+/* Checks if a stream is QAP stream or not. */
+bool audio_extn_is_qap_stream(struct stream_out *out)
+{
+    struct qap_module *qap_mod = get_qap_module_for_input_stream_l(out);
+
+    if (qap_mod) {
+        return true;
+    }
+    return false;
+}
+
+#if 0
+/* API to send playback stream specific config parameters */
+int audio_extn_qap_out_set_param_data(struct stream_out *out,
+                                       audio_extn_param_id param_id,
+                                       audio_extn_param_payload *payload)
+{
+    int ret = -EINVAL;
+    int index;
+    struct stream_out *new_out = NULL;
+    struct audio_adsp_event *adsp_event;
+    struct qap_module *qap_mod = get_qap_module_for_input_stream_l(out);
+
+    if (!out || !qap_mod || !payload) {
+        ERROR_MSG("Invalid Param");
+        return ret;
+    }
+
+    /* apply param for all active out sessions */
+    for (index = 0; index < MAX_QAP_MODULE_OUT; index++) {
+        new_out = qap_mod->stream_out[index];
+        if (!new_out) continue;
+
+        /*ADSP event is not supported for passthrough*/
+        if ((param_id == AUDIO_EXTN_PARAM_ADSP_STREAM_CMD)
+            && !(new_out->flags == AUDIO_OUTPUT_FLAG_DIRECT)) continue;
+        if (new_out->standby)
+            new_out->stream.write((struct audio_stream_out *)new_out, NULL, 0);
+        lock_output_stream_l(new_out);
+        ret = audio_extn_out_set_param_data(new_out, param_id, payload);
+        if (ret)
+            ERROR_MSG("audio_extn_out_set_param_data error %d", ret);
+        unlock_output_stream_l(new_out);
+    }
+    return ret;
+}
+
+int audio_extn_qap_out_get_param_data(struct stream_out *out,
+                             audio_extn_param_id param_id,
+                             audio_extn_param_payload *payload)
+{
+    int ret = -EINVAL, i;
+    struct stream_out *new_out = NULL;
+    struct qap_module *qap_mod = get_qap_module_for_input_stream_l(out);
+
+    if (!out || !qap_mod || !payload) {
+        ERROR_MSG("Invalid Param");
+        return ret;
+    }
+
+    if (!p_qap->hdmi_connect) {
+        ERROR_MSG("hdmi not connected");
+        return ret;
+    }
+
+    /* get session which is routed to hdmi*/
+    if (p_qap->passthrough_out)
+        new_out = p_qap->passthrough_out;
+    else {
+        for (i = 0; i < MAX_QAP_MODULE_OUT; i++) {
+            if (qap_mod->stream_out[i]) {
+                new_out = qap_mod->stream_out[i];
+                break;
+            }
+        }
+    }
+
+    if (!new_out) {
+        ERROR_MSG("No stream active.");
+        return ret;
+    }
+
+    if (new_out->standby)
+        new_out->stream.write((struct audio_stream_out *)new_out, NULL, 0);
+
+    lock_output_stream_l(new_out);
+    ret = audio_extn_out_get_param_data(new_out, param_id, payload);
+    if (ret)
+        ERROR_MSG("audio_extn_out_get_param_data error %d", ret);
+    unlock_output_stream_l(new_out);
+
+    return ret;
+}
+#endif
+
+int audio_extn_qap_open_output_stream(struct audio_hw_device *dev,
+                                      audio_io_handle_t handle,
+                                      audio_devices_t devices,
+                                      audio_output_flags_t flags,
+                                      struct audio_config *config,
+                                      struct audio_stream_out **stream_out,
+                                      const char *address)
+{
+    int ret = 0;
+    struct stream_out *out;
+
+    DEBUG_MSG("Entry");
+    ret = adev_open_output_stream(dev, handle, devices, flags, config, stream_out, address);
+    if (*stream_out == NULL) {
+        ERROR_MSG("Stream open failed %d", ret);
+        return ret;
+    }
+
+#ifndef LINUX_ENABLED
+//Bypass QAP for dummy PCM session opened by APM during boot time
+    if(flags == 0) {
+        ALOGD("bypassing QAP for flags is equal to none");
+        return ret;
+    }
+#endif
+
+    out = (struct stream_out *)*stream_out;
+
+    DEBUG_MSG("%s 0x%x", use_case_table[out->usecase], (int)out);
+
+    ret = qap_stream_open(out, config, flags, devices);
+    if (ret < 0) {
+        ERROR_MSG("Error opening QAP stream err[%d]", ret);
+        //Stream not supported by QAP, Bypass QAP.
+        return 0;
+    }
+
+    /* Override function pointers based on qap definitions */
+    out->stream.set_volume = qap_out_set_volume;
+    out->stream.pause = qap_out_pause;
+    out->stream.resume = qap_out_resume;
+    out->stream.drain = qap_out_drain;
+    out->stream.flush = qap_out_flush;
+
+    out->stream.common.standby = qap_out_standby;
+    out->stream.common.set_parameters = qap_out_set_parameters;
+    out->stream.get_latency = qap_out_get_latency;
+    out->stream.get_render_position = qap_out_get_render_position;
+    out->stream.write = qap_out_write;
+    out->stream.get_presentation_position = qap_out_get_presentation_position;
+    out->platform_latency = 0;
+
+    /*TODO: Need to handle this for DTS*/
+    if (out->usecase == USECASE_AUDIO_PLAYBACK_LOW_LATENCY) {
+        out->usecase = USECASE_AUDIO_PLAYBACK_DEEP_BUFFER;
+        out->config.period_size = QAP_DEEP_BUFFER_OUTPUT_PERIOD_SIZE;
+        out->config.period_count = DEEP_BUFFER_OUTPUT_PERIOD_COUNT;
+        out->config.start_threshold = QAP_DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4;
+        out->config.avail_min = QAP_DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4;
+    } else if(out->flags == AUDIO_OUTPUT_FLAG_DIRECT) {
+        out->compr_config.fragment_size = qap_get_pcm_offload_input_buffer_size(&(config->offload_info));
+    }
+
+    *stream_out = &out->stream;
+
+    DEBUG_MSG("Exit");
+    return 0;
+}
+
+void audio_extn_qap_close_output_stream(struct audio_hw_device *dev,
+                                        struct audio_stream_out *stream)
+{
+    struct stream_out *out = (struct stream_out *)stream;
+    struct qap_module* qap_mod = get_qap_module_for_input_stream_l(out);
+
+    DEBUG_MSG("%s 0x%x", use_case_table[out->usecase], (int)out);
+
+    if (!qap_mod) {
+        DEBUG_MSG("qap module is NULL, nothing to close");
+        /*closing non-MS12/default output stream opened with qap */
+        adev_close_output_stream(dev, stream);
+        return;
+    }
+
+    DEBUG_MSG("stream_handle(%p) format = %x", out, out->format);
+
+    //If close is received for QAP passthrough stream then close the QAP passthrough output.
+    if (p_qap->passthrough_in == out) {
+        if (p_qap->passthrough_out) {
+            ALOGD("%s %d closing stream handle %p", __func__, __LINE__, p_qap->passthrough_out);
+            pthread_mutex_lock(&p_qap->lock);
+            adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                     (struct audio_stream_out *)(p_qap->passthrough_out));
+            pthread_mutex_unlock(&p_qap->lock);
+            p_qap->passthrough_out = NULL;
+        }
+
+        p_qap->passthrough_in = NULL;
+    }
+
+    qap_stream_close(out);
+
+    adev_close_output_stream(dev, stream);
+
+    DEBUG_MSG("Exit");
+}
+
+/* Check if QAP is supported or not. */
+bool audio_extn_qap_is_enabled()
+{
+    bool prop_enabled = false;
+    char value[PROPERTY_VALUE_MAX] = {0};
+    property_get("vendor.audio.qap.enabled", value, NULL);
+    prop_enabled = atoi(value) || !strncmp("true", value, 4);
+    return (prop_enabled);
+}
+
+/* QAP set parameter function. For Device connect and disconnect. */
+int audio_extn_qap_set_parameters(struct audio_device *adev, struct str_parms *parms)
+{
+    int status = 0, val = 0;
+    qap_session_outputs_config_t *session_outputs_config = NULL;
+
+    if (!p_qap) {
+        return -EINVAL;
+    }
+
+    DEBUG_MSG("Entry");
+
+    status = str_parms_get_int(parms, AUDIO_PARAMETER_DEVICE_CONNECT, &val);
+
+    if ((status >= 0) && audio_is_output_device(val)) {
+        if (val & AUDIO_DEVICE_OUT_AUX_DIGITAL) { //HDMI is connected.
+            DEBUG_MSG("AUDIO_DEVICE_OUT_AUX_DIGITAL connected");
+            p_qap->hdmi_connect = 1;
+            p_qap->hdmi_sink_channels = 0;
+
+            if (p_qap->passthrough_in) { //If QAP passthrough is already initialized.
+                lock_output_stream_l(p_qap->passthrough_in);
+                if (platform_is_edid_supported_format(adev->platform,
+                                                      p_qap->passthrough_in->format)) {
+                    //If passthrough format is supported by HDMI then create the QAP passthrough output if not created already.
+                    create_qap_passthrough_stream_l();
+                    //Ignoring the returned error, If error then QAP passthrough is disabled.
+                } else {
+                    //If passthrough format is not supported by HDMI then close the QAP passthrough output if already created.
+                    close_qap_passthrough_stream_l();
+                }
+                unlock_output_stream_l(p_qap->passthrough_in);
+            }
+
+            qap_set_hdmi_configuration_to_module();
+
+        } else if (val & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP) {
+            DEBUG_MSG("AUDIO_DEVICE_OUT_BLUETOOTH_A2DP connected");
+            p_qap->bt_connect = 1;
+            qap_set_default_configuration_to_module();
+#ifndef SPLIT_A2DP_ENABLED
+            for (k = 0; k < MAX_MM_MODULE_TYPE; k++) {
+                if (!p_qap->qap_mod[k].bt_hdl) {
+                    DEBUG_MSG("Opening a2dp output...");
+                    status = audio_extn_bt_hal_load(&p_qap->qap_mod[k].bt_hdl);
+                    if (status != 0) {
+                        ERROR_MSG("Error opening BT module");
+                        return status;
+                    }
+                }
+            }
+#endif
+        }
+        //TODO else if: Need to consider other devices.
+    }
+
+    status = str_parms_get_int(parms, AUDIO_PARAMETER_DEVICE_DISCONNECT, &val);
+    if ((status >= 0) && audio_is_output_device(val)) {
+        DEBUG_MSG("AUDIO_DEVICE_OUT_AUX_DIGITAL disconnected");
+        if (val & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
+
+            p_qap->hdmi_sink_channels = 0;
+
+            p_qap->passthrough_enabled = 0;
+            p_qap->mch_pcm_hdmi_enabled = 0;
+            p_qap->hdmi_connect = 0;
+
+            if (p_qap->qap_mod[MS12].session_handle)
+                session_outputs_config = &p_qap->qap_mod[MS12].session_outputs_config;
+            else if (p_qap->qap_mod[DTS_M8].session_handle)
+                session_outputs_config = &p_qap->qap_mod[DTS_M8].session_outputs_config;
+            else {
+                DEBUG_MSG("HDMI disconnection comes even before session is setup");
+                return 0;
+            }
+
+            session_outputs_config->num_output = 1;
+
+            session_outputs_config->output_config[0].id = AUDIO_DEVICE_OUT_SPEAKER;
+            session_outputs_config->output_config[0].format = QAP_AUDIO_FORMAT_PCM_16_BIT;
+
+
+            if (p_qap->qap_mod[MS12].session_handle) {
+                DEBUG_MSG(" Enabling speaker(PCM out) from MS12 wrapper outputid = %x", session_outputs_config->output_config[0].id);
+                status = qap_session_cmd(p_qap->qap_mod[MS12].session_handle,
+                                    QAP_SESSION_CMD_SET_OUTPUTS,
+                                    sizeof(qap_session_outputs_config_t),
+                                    session_outputs_config,
+                                    NULL,
+                                    NULL);
+                if (QAP_STATUS_OK != status) {
+                    ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_SPEAKER device with QAP %d",status);
+                    return -EINVAL;
+                }
+            }
+            if (p_qap->qap_mod[DTS_M8].session_handle) {
+                status = qap_session_cmd(p_qap->qap_mod[MS12].session_handle,
+                                    QAP_SESSION_CMD_SET_OUTPUTS,
+                                    sizeof(qap_session_outputs_config_t),
+                                    session_outputs_config,
+                                    NULL,
+                                    NULL);
+                if (QAP_STATUS_OK != status) {
+                    ERROR_MSG("Unable to register AUDIO_DEVICE_OUT_SPEAKER device with QAP %d", status);
+                    return -EINVAL;
+                }
+            }
+
+            close_all_hdmi_output_l();
+            close_qap_passthrough_stream_l();
+        } else if (val & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP) {
+            DEBUG_MSG("AUDIO_DEVICE_OUT_BLUETOOTH_A2DP disconnected");
+            p_qap->bt_connect = 0;
+            //reconfig HDMI as end device (if connected)
+            if(p_qap->hdmi_connect)
+                qap_set_hdmi_configuration_to_module();
+#ifndef SPLIT_A2DP_ENABLED
+            DEBUG_MSG("Closing a2dp output...");
+            for (k = 0; k < MAX_MM_MODULE_TYPE; k++) {
+                if (p_qap->qap_mod[k].bt_hdl) {
+                    audio_extn_bt_hal_unload(p_qap->qap_mod[k].bt_hdl);
+                    p_qap->qap_mod[k].bt_hdl = NULL;
+                }
+            }
+#endif
+        }
+        //TODO else if: Need to consider other devices.
+    }
+
+#if 0
+    /* does this need to be ported to QAP?*/
+    for (k = 0; k < MAX_MM_MODULE_TYPE; k++) {
+        kv_parirs = str_parms_to_str(parms);
+        if (p_qap->qap_mod[k].session_handle) {
+            p_qap->qap_mod[k].qap_audio_session_set_param(
+                    p_qap->qap_mod[k].session_handle, kv_parirs);
+        }
+    }
+#endif
+
+    DEBUG_MSG("Exit");
+    return status;
+}
+
+/* Create the QAP. */
+int audio_extn_qap_init(struct audio_device *adev)
+{
+    DEBUG_MSG("Entry");
+
+    p_qap = calloc(1, sizeof(struct qap));
+    if (p_qap == NULL) {
+        ERROR_MSG("Out of memory");
+        return -ENOMEM;
+    }
+
+    p_qap->adev = adev;
+
+    if (property_get_bool("vendor.audio.qap.msmd", false)) {
+        DEBUG_MSG("MSMD enabled.");
+        p_qap->qap_msmd_enabled = 1;
+    }
+
+    if (property_get_bool("vendor.audio.qap.output.block.handling", false)) {
+        DEBUG_MSG("out put thread blocking handling enabled.");
+        p_qap->qap_output_block_handling = 1;
+    }
+    pthread_mutex_init(&p_qap->lock, (const pthread_mutexattr_t *) NULL);
+
+    int i = 0;
+
+    for (i = 0; i < MAX_MM_MODULE_TYPE; i++) {
+        char value[PROPERTY_VALUE_MAX] = {0};
+        char lib_name[PROPERTY_VALUE_MAX] = {0};
+        struct qap_module *qap_mod = &(p_qap->qap_mod[i]);
+
+        if (i == MS12) {
+            property_get("vendor.audio.qap.library", value, NULL);
+            snprintf(lib_name, PROPERTY_VALUE_MAX, "%s", value);
+
+            DEBUG_MSG("Opening Ms12 library at %s", lib_name);
+           qap_mod->qap_lib = ( void *) qap_load_library(lib_name);
+            if (qap_mod->qap_lib == NULL) {
+                ERROR_MSG("qap load lib failed for MS12 %s", lib_name);
+                continue;
+            }
+            DEBUG_MSG("Loaded QAP lib at %s", lib_name);
+            pthread_mutex_init(&qap_mod->session_output_lock, (const pthread_mutexattr_t *) NULL);
+            pthread_cond_init(&qap_mod->session_output_cond, (const pthread_condattr_t *)NULL);
+        } else if (i == DTS_M8) {
+            property_get("vendor.audio.qap.m8.library", value, NULL);
+            snprintf(lib_name, PROPERTY_VALUE_MAX, "%s", value);
+            qap_mod->qap_lib = dlopen(lib_name, RTLD_NOW);
+            if (qap_mod->qap_lib == NULL) {
+                ERROR_MSG("DLOPEN failed for DTS M8 %s", lib_name);
+                continue;
+            }
+            DEBUG_MSG("DLOPEN successful for %s", lib_name);
+            pthread_mutex_init(&qap_mod->session_output_lock, (const pthread_mutexattr_t *) NULL);
+            pthread_cond_init(&qap_mod->session_output_cond, (const pthread_condattr_t *)NULL);
+        } else {
+            continue;
+        }
+    }
+
+    DEBUG_MSG("Exit");
+    return 0;
+}
+
+/* Tear down the qap extension. */
+void audio_extn_qap_deinit()
+{
+    int i;
+    DEBUG_MSG("Entry");
+    char value[PROPERTY_VALUE_MAX] = {0};
+    char lib_name[PROPERTY_VALUE_MAX] = {0};
+
+    if (p_qap != NULL) {
+        for (i = 0; i < MAX_MM_MODULE_TYPE; i++) {
+            if (p_qap->qap_mod[i].session_handle != NULL)
+                qap_sess_close(&p_qap->qap_mod[i]);
+
+            if (p_qap->qap_mod[i].qap_lib != NULL) {
+                if (i == MS12) {
+                    property_get("vendor.audio.qap.library", value, NULL);
+                    snprintf(lib_name, PROPERTY_VALUE_MAX, "%s", value);
+                    DEBUG_MSG("lib_name %s", lib_name);
+                    if (QAP_STATUS_OK != qap_unload_library(p_qap->qap_mod[i].qap_lib))
+                        ERROR_MSG("Failed to unload MS12 library lib name %s", lib_name);
+                    else
+                        DEBUG_MSG("closed/unloaded QAP lib at %s", lib_name);
+                    p_qap->qap_mod[i].qap_lib = NULL;
+                } else {
+                    dlclose(p_qap->qap_mod[i].qap_lib);
+                    p_qap->qap_mod[i].qap_lib = NULL;
+                }
+                pthread_mutex_destroy(&p_qap->qap_mod[i].session_output_lock);
+                pthread_cond_destroy(&p_qap->qap_mod[i].session_output_cond);
+            }
+        }
+
+        if (p_qap->passthrough_out) {
+            adev_close_output_stream((struct audio_hw_device *)p_qap->adev,
+                                     (struct audio_stream_out *)(p_qap->passthrough_out));
+            p_qap->passthrough_out = NULL;
+        }
+
+        pthread_mutex_destroy(&p_qap->lock);
+        free(p_qap);
+        p_qap = NULL;
+    }
+    DEBUG_MSG("Exit");
+}
diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index c559c12..6658e28 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -7713,6 +7713,8 @@
         audio_extn_utils_release_streams_cfg_lists(
                       &adev->streams_output_cfg_list,
                       &adev->streams_input_cfg_list);
+        if (audio_extn_qap_is_enabled())
+            audio_extn_qap_deinit();
         if (audio_extn_qaf_is_enabled())
             audio_extn_qaf_deinit();
         audio_route_free(adev->audio_route);
@@ -7972,6 +7974,21 @@
         return -EINVAL;
     }
 
+    if (audio_extn_qap_is_enabled()) {
+        ret = audio_extn_qap_init(adev);
+        if (ret < 0) {
+            pthread_mutex_destroy(&adev->lock);
+            free(adev);
+            adev = NULL;
+            ALOGE("%s: Failed to init platform data, aborting.", __func__);
+            *device = NULL;
+            pthread_mutex_unlock(&adev_init_lock);
+            return ret;
+        }
+        adev->device.open_output_stream = audio_extn_qap_open_output_stream;
+        adev->device.close_output_stream = audio_extn_qap_close_output_stream;
+    }
+
     if (audio_extn_qaf_is_enabled()) {
         ret = audio_extn_qaf_init(adev);
         if (ret < 0) {
diff --git a/hal/audio_hw.h b/hal/audio_hw.h
index e367909..f791b6a 100644
--- a/hal/audio_hw.h
+++ b/hal/audio_hw.h
@@ -331,6 +331,7 @@
     card_status_t card_status;
 
     void* qaf_stream_handle;
+    void* qap_stream_handle;
     pthread_cond_t qaf_offload_cond;
     pthread_t qaf_offload_thread;
     struct listnode qaf_offload_cmd_list;
diff --git a/qahw_api/test/qahw_playback_test.c b/qahw_api/test/qahw_playback_test.c
index 648ffe2..f7faa07 100644
--- a/qahw_api/test/qahw_playback_test.c
+++ b/qahw_api/test/qahw_playback_test.c
@@ -345,9 +345,11 @@
     switch (event) {
     case QAHW_STREAM_CBK_EVENT_WRITE_READY:
         fprintf(log_file, "stream %d: received event - QAHW_STREAM_CBK_EVENT_WRITE_READY\n", params->stream_index);
+
         pthread_mutex_lock(&params->write_lock);
         pthread_cond_signal(&params->write_cond);
         pthread_mutex_unlock(&params->write_lock);
+
         break;
     case QAHW_STREAM_CBK_EVENT_DRAIN_READY:
         fprintf(log_file, "stream %d: received event - QAHW_STREAM_CBK_EVENT_DRAIN_READY\n", params->stream_index);
@@ -543,7 +545,7 @@
     stream_config *stream_params = (stream_config*) params_ptr;
 
     ssize_t ret;
-    pthread_mutex_lock(&stream_params->write_lock);
+
     qahw_out_buffer_t out_buf;
 
     memset(&out_buf,0, sizeof(qahw_out_buffer_t));
@@ -554,13 +556,14 @@
     if (ret < 0) {
         fprintf(log_file, "stream %d: writing data to hal failed (ret = %zd)\n", stream_params->stream_index, ret);
     } else if ((ret != bytes) && (!stop_playback)) {
+        pthread_mutex_lock(&stream_params->write_lock);
         fprintf(log_file, "stream %d: provided bytes %zd, written bytes %d\n",stream_params->stream_index, bytes, ret);
         fprintf(log_file, "stream %d: waiting for event write ready\n", stream_params->stream_index);
         pthread_cond_wait(&stream_params->write_cond, &stream_params->write_lock);
         fprintf(log_file, "stream %d: out of wait for event write ready\n", stream_params->stream_index);
+        pthread_mutex_unlock(&stream_params->write_lock);
     }
 
-    pthread_mutex_unlock(&stream_params->write_lock);
     return ret;
 }