audio: msm8909w caf release LW.BR.1.0-00410-8x09w.0

MSM8909w Audio HAL code copied from CAF release
LW.BR.1.0-00410-8x09w.0

dbcce50 hal: Port wcd9326 changes to 8909
410c530 hal: update error handling for pcm_prepare failures
ff79309 hal: fix compilation issues with audio FM extention
762d7eb policy_hal: add support for fm device loopback
7c418f9 audio_policy: modify few methods to appropriately override base
8b12163 audio: Add support to enable split A2DP
a0559fa Revert "Revert "policy_hal: Function prototype correction for custom policy"."

Fixed makefiles to be compatible with PDK without kernel source

Change-Id: I9c6f2139adee62426b877516deeb41d4ed8052b2
diff --git a/msm8909/hal/voice.c b/msm8909/hal/voice.c
new file mode 100644
index 0000000..41a0699
--- /dev/null
+++ b/msm8909/hal/voice.c
@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ * Not a contribution.
+ *
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "voice"
+/*#define LOG_NDEBUG 0*/
+#define LOG_NDDEBUG 0
+
+#include <errno.h>
+#include <stdlib.h>
+#include <math.h>
+#include <cutils/log.h>
+#include <cutils/str_parms.h>
+
+#include "audio_hw.h"
+#include "voice.h"
+#include "voice_extn/voice_extn.h"
+#include "platform.h"
+#include "platform_api.h"
+#include "audio_extn.h"
+
+struct pcm_config pcm_config_voice_call = {
+    .channels = 1,
+    .rate = 8000,
+    .period_size = 160,
+    .period_count = 2,
+    .format = PCM_FORMAT_S16_LE,
+};
+
+static struct voice_session *voice_get_session_from_use_case(struct audio_device *adev,
+                              audio_usecase_t usecase_id)
+{
+    struct voice_session *session = NULL;
+    int ret = 0;
+
+    ret = voice_extn_get_session_from_use_case(adev, usecase_id, &session);
+    if (ret == -ENOSYS) {
+        session = &adev->voice.session[VOICE_SESS_IDX];
+    }
+
+    return session;
+}
+
+int voice_stop_usecase(struct audio_device *adev, audio_usecase_t usecase_id)
+{
+    int i, ret = 0;
+    struct audio_usecase *uc_info;
+    struct voice_session *session = NULL;
+
+    ALOGD("%s: enter usecase:%s", __func__, use_case_table[usecase_id]);
+
+    session = (struct voice_session *)voice_get_session_from_use_case(adev, usecase_id);
+    if (!session) {
+        ALOGE("stop_call: couldn't find voice session");
+        return -EINVAL;
+    }
+
+    session->state.current = CALL_INACTIVE;
+    if (adev->mode == AUDIO_MODE_NORMAL)
+        adev->voice.is_in_call = false;
+
+    ret = platform_stop_voice_call(adev->platform, session->vsid);
+
+    /* 1. Close the PCM devices */
+    if (session->pcm_rx) {
+        pcm_close(session->pcm_rx);
+        session->pcm_rx = NULL;
+    }
+    if (session->pcm_tx) {
+        pcm_close(session->pcm_tx);
+        session->pcm_tx = NULL;
+    }
+
+    uc_info = get_usecase_from_list(adev, usecase_id);
+    if (uc_info == NULL) {
+        ALOGE("%s: Could not find the usecase (%d) in the list",
+              __func__, usecase_id);
+        return -EINVAL;
+    }
+
+    /* 2. Get and set stream specific mixer controls */
+    disable_audio_route(adev, uc_info);
+
+    /* 3. Disable the rx and tx devices */
+    disable_snd_device(adev, uc_info->out_snd_device);
+    disable_snd_device(adev, uc_info->in_snd_device);
+
+    list_remove(&uc_info->list);
+    free(uc_info);
+
+    ALOGD("%s: exit: status(%d)", __func__, ret);
+    return ret;
+}
+
+int voice_start_usecase(struct audio_device *adev, audio_usecase_t usecase_id)
+{
+    int i, ret = 0;
+    struct audio_usecase *uc_info;
+    int pcm_dev_rx_id, pcm_dev_tx_id;
+    uint32_t sample_rate = 8000;
+    struct voice_session *session = NULL;
+    struct pcm_config voice_config = pcm_config_voice_call;
+
+    ALOGD("%s: enter usecase:%s", __func__, use_case_table[usecase_id]);
+
+    session = (struct voice_session *)voice_get_session_from_use_case(adev, usecase_id);
+    if (!session) {
+        ALOGE("start_call: couldn't find voice session");
+        return -EINVAL;
+    }
+
+    uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase));
+    if (!uc_info) {
+        ALOGE("start_call: couldn't allocate mem for audio_usecase");
+        return -ENOMEM;
+    }
+
+    uc_info->id = usecase_id;
+    uc_info->type = VOICE_CALL;
+    uc_info->stream.out = adev->current_call_output ;
+    uc_info->devices = adev->current_call_output ->devices;
+    uc_info->in_snd_device = SND_DEVICE_NONE;
+    uc_info->out_snd_device = SND_DEVICE_NONE;
+
+    list_add_tail(&adev->usecase_list, &uc_info->list);
+
+    select_devices(adev, usecase_id);
+
+    pcm_dev_rx_id = platform_get_pcm_device_id(uc_info->id, PCM_PLAYBACK);
+    pcm_dev_tx_id = platform_get_pcm_device_id(uc_info->id, PCM_CAPTURE);
+
+    if (pcm_dev_rx_id < 0 || pcm_dev_tx_id < 0) {
+        ALOGE("%s: Invalid PCM devices (rx: %d tx: %d) for the usecase(%d)",
+              __func__, pcm_dev_rx_id, pcm_dev_tx_id, uc_info->id);
+        ret = -EIO;
+        goto error_start_voice;
+    }
+    ret = platform_get_sample_rate(adev->platform, &sample_rate);
+    if (ret < 0) {
+        ALOGE("platform_get_sample_rate error %d\n", ret);
+    } else {
+        voice_config.rate = sample_rate;
+    }
+    ALOGD("voice_config.rate %d\n", voice_config.rate);
+
+    ALOGV("%s: Opening PCM playback device card_id(%d) device_id(%d)",
+          __func__, adev->snd_card, pcm_dev_rx_id);
+    session->pcm_rx = pcm_open(adev->snd_card,
+                               pcm_dev_rx_id,
+                               PCM_OUT, &voice_config);
+    if (session->pcm_rx && !pcm_is_ready(session->pcm_rx)) {
+        ALOGE("%s: %s", __func__, pcm_get_error(session->pcm_rx));
+        ret = -EIO;
+        goto error_start_voice;
+    }
+
+    ALOGV("%s: Opening PCM capture device card_id(%d) device_id(%d)",
+          __func__, adev->snd_card, pcm_dev_tx_id);
+    session->pcm_tx = pcm_open(adev->snd_card,
+                               pcm_dev_tx_id,
+                               PCM_IN, &voice_config);
+    if (session->pcm_tx && !pcm_is_ready(session->pcm_tx)) {
+        ALOGE("%s: %s", __func__, pcm_get_error(session->pcm_tx));
+        ret = -EIO;
+        goto error_start_voice;
+    }
+    pcm_start(session->pcm_rx);
+    pcm_start(session->pcm_tx);
+
+    voice_set_volume(adev, adev->voice.volume);
+
+    ret = platform_start_voice_call(adev->platform, session->vsid);
+    if (ret < 0) {
+        ALOGE("%s: platform_start_voice_call error %d\n", __func__, ret);
+        goto error_start_voice;
+    }
+
+    session->state.current = CALL_ACTIVE;
+    goto done;
+
+error_start_voice:
+    voice_stop_usecase(adev, usecase_id);
+
+done:
+    ALOGD("%s: exit: status(%d)", __func__, ret);
+    return ret;
+}
+
+bool voice_is_call_state_active(struct audio_device *adev)
+{
+    bool call_state = false;
+    int ret = 0;
+
+    ret = voice_extn_is_call_state_active(adev, &call_state);
+    if (ret == -ENOSYS) {
+        call_state = (adev->voice.session[VOICE_SESS_IDX].state.current == CALL_ACTIVE) ? true : false;
+    }
+
+    return call_state;
+}
+
+bool voice_is_in_call(struct audio_device *adev)
+{
+    return adev->voice.in_call;
+}
+
+bool voice_is_in_call_rec_stream(struct stream_in *in)
+{
+    bool in_call_rec = false;
+    int ret = 0;
+
+    ret = voice_extn_is_in_call_rec_stream(in, &in_call_rec);
+    if (ret == -ENOSYS) {
+        in_call_rec = false;
+    }
+
+    return in_call_rec;
+}
+
+uint32_t voice_get_active_session_id(struct audio_device *adev)
+{
+    int ret = 0;
+    uint32_t session_id;
+
+    ret = voice_extn_get_active_session_id(adev, &session_id);
+    if (ret == -ENOSYS) {
+        session_id = VOICE_VSID;
+    }
+    return session_id;
+}
+
+int voice_check_and_set_incall_rec_usecase(struct audio_device *adev,
+                                           struct stream_in *in)
+{
+    int ret = 0;
+    uint32_t session_id;
+    int usecase_id;
+    int rec_mode = INCALL_REC_NONE;
+
+    if (voice_is_call_state_active(adev)) {
+        switch (in->source) {
+        case AUDIO_SOURCE_VOICE_UPLINK:
+            if (audio_extn_compr_cap_enabled() &&
+                audio_extn_compr_cap_format_supported(in->config.format)) {
+                in->usecase = USECASE_INCALL_REC_UPLINK_COMPRESS;
+            } else
+                in->usecase = USECASE_INCALL_REC_UPLINK;
+            rec_mode = INCALL_REC_UPLINK;
+            break;
+        case AUDIO_SOURCE_VOICE_DOWNLINK:
+            if (audio_extn_compr_cap_enabled() &&
+                audio_extn_compr_cap_format_supported(in->config.format)) {
+                in->usecase = USECASE_INCALL_REC_DOWNLINK_COMPRESS;
+            } else
+                in->usecase = USECASE_INCALL_REC_DOWNLINK;
+            rec_mode = INCALL_REC_DOWNLINK;
+            break;
+        case AUDIO_SOURCE_VOICE_CALL:
+            if (audio_extn_compr_cap_enabled() &&
+                audio_extn_compr_cap_format_supported(in->config.format)) {
+                in->usecase = USECASE_INCALL_REC_UPLINK_AND_DOWNLINK_COMPRESS;
+            } else
+                in->usecase = USECASE_INCALL_REC_UPLINK_AND_DOWNLINK;
+            rec_mode = INCALL_REC_UPLINK_AND_DOWNLINK;
+            break;
+        default:
+            ALOGV("%s: Source type %d doesnt match incall recording criteria",
+                  __func__, in->source);
+            return ret;
+        }
+
+        session_id = voice_get_active_session_id(adev);
+        ret = platform_set_incall_recording_session_id(adev->platform,
+                                                       session_id, rec_mode);
+        ALOGV("%s: Update usecase to %d",__func__, in->usecase);
+    } else {
+        ALOGV("%s: voice call not active", __func__);
+    }
+
+    return ret;
+}
+
+int voice_check_and_stop_incall_rec_usecase(struct audio_device *adev,
+                                            struct stream_in *in)
+{
+    int ret = 0;
+
+    if (in->source == AUDIO_SOURCE_VOICE_UPLINK ||
+        in->source == AUDIO_SOURCE_VOICE_DOWNLINK ||
+        in->source == AUDIO_SOURCE_VOICE_CALL) {
+        ret = platform_stop_incall_recording_usecase(adev->platform);
+        ALOGV("%s: Stop In-call recording", __func__);
+    }
+
+    return ret;
+}
+
+int voice_check_and_set_incall_music_usecase(struct audio_device *adev,
+                                             struct stream_out *out)
+{
+    int ret = 0;
+
+    ret = voice_extn_check_and_set_incall_music_usecase(adev, out);
+    if (ret == -ENOSYS) {
+        /* Incall music delivery is used only for LCH call state */
+        ret = -EINVAL;
+    }
+
+    return ret;
+}
+
+int voice_set_mic_mute(struct audio_device *adev, bool state)
+{
+    int err = 0;
+
+    adev->voice.mic_mute = state;
+    if (adev->mode == AUDIO_MODE_IN_CALL)
+        err = platform_set_mic_mute(adev->platform, state);
+    if (adev->mode == AUDIO_MODE_IN_COMMUNICATION)
+        err = voice_extn_compress_voip_set_mic_mute(adev, state);
+
+    return err;
+}
+
+bool voice_get_mic_mute(struct audio_device *adev)
+{
+    return adev->voice.mic_mute;
+}
+
+int voice_set_volume(struct audio_device *adev, float volume)
+{
+    int vol, err = 0;
+
+    adev->voice.volume = volume;
+    if (adev->mode == AUDIO_MODE_IN_CALL) {
+        if (volume < 0.0) {
+            volume = 0.0;
+        } else if (volume > 1.0) {
+            volume = 1.0;
+        }
+
+        vol = lrint(volume * 100.0);
+
+        // Voice volume levels from android are mapped to driver volume levels as follows.
+        // 0 -> 5, 20 -> 4, 40 ->3, 60 -> 2, 80 -> 1, 100 -> 0
+        // So adjust the volume to get the correct volume index in driver
+        vol = 100 - vol;
+
+        err = platform_set_voice_volume(adev->platform, vol);
+    }
+    if (adev->mode == AUDIO_MODE_IN_COMMUNICATION)
+        err = voice_extn_compress_voip_set_volume(adev, volume);
+
+
+    return err;
+}
+
+int voice_start_call(struct audio_device *adev)
+{
+    int ret = 0;
+
+    ret = voice_extn_start_call(adev);
+    if (ret == -ENOSYS) {
+        ret = voice_start_usecase(adev, USECASE_VOICE_CALL);
+    }
+    adev->voice.in_call = true;
+
+    return ret;
+}
+
+int voice_stop_call(struct audio_device *adev)
+{
+    int ret = 0;
+
+    adev->voice.in_call = false;
+    ret = voice_extn_stop_call(adev);
+    if (ret == -ENOSYS) {
+        ret = voice_stop_usecase(adev, USECASE_VOICE_CALL);
+    }
+
+    return ret;
+}
+
+void voice_get_parameters(struct audio_device *adev,
+                          struct str_parms *query,
+                          struct str_parms *reply)
+{
+    voice_extn_get_parameters(adev, query, reply);
+}
+
+int voice_set_parameters(struct audio_device *adev, struct str_parms *parms)
+{
+    char *str;
+    char value[32];
+    int val;
+    int ret = 0, err;
+    char *kv_pairs = str_parms_to_str(parms);
+
+    ALOGV_IF(kv_pairs != NULL, "%s: enter: %s", __func__, kv_pairs);
+
+    ret = voice_extn_set_parameters(adev, parms);
+    if (ret != 0) {
+        if (ret == -ENOSYS)
+            ret = 0;
+        else
+            goto done;
+    }
+
+    ret = voice_extn_compress_voip_set_parameters(adev, parms);
+    if (ret != 0) {
+        if (ret == -ENOSYS)
+            ret = 0;
+        else
+            goto done;
+    }
+
+    err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_TTY_MODE, value, sizeof(value));
+    if (err >= 0) {
+        int tty_mode;
+        str_parms_del(parms, AUDIO_PARAMETER_KEY_TTY_MODE);
+        if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_OFF) == 0)
+            tty_mode = TTY_MODE_OFF;
+        else if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_VCO) == 0)
+            tty_mode = TTY_MODE_VCO;
+        else if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_HCO) == 0)
+            tty_mode = TTY_MODE_HCO;
+        else if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_FULL) == 0)
+            tty_mode = TTY_MODE_FULL;
+        else {
+            ret = -EINVAL;
+            goto done;
+        }
+
+        if (tty_mode != adev->voice.tty_mode) {
+            adev->voice.tty_mode = tty_mode;
+            adev->acdb_settings = (adev->acdb_settings & TTY_MODE_CLEAR) | tty_mode;
+            if (voice_is_call_state_active(adev))
+               voice_update_devices_for_all_voice_usecases(adev);
+        }
+    }
+
+    err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_INCALLMUSIC,
+                            value, sizeof(value));
+    if (err >= 0) {
+        str_parms_del(parms, AUDIO_PARAMETER_KEY_INCALLMUSIC);
+        if (strcmp(value, AUDIO_PARAMETER_VALUE_TRUE) == 0)
+            platform_start_incall_music_usecase(adev->platform);
+        else
+            platform_stop_incall_music_usecase(adev->platform);
+    }
+
+done:
+    ALOGV("%s: exit with code(%d)", __func__, ret);
+    free(kv_pairs);
+    return ret;
+}
+
+void voice_init(struct audio_device *adev)
+{
+    int i = 0;
+
+    memset(&adev->voice, 0, sizeof(adev->voice));
+    adev->voice.tty_mode = TTY_MODE_OFF;
+    adev->voice.volume = 1.0f;
+    adev->voice.mic_mute = false;
+    adev->voice.in_call = false;
+    for (i = 0; i < MAX_VOICE_SESSIONS; i++) {
+        adev->voice.session[i].pcm_rx = NULL;
+        adev->voice.session[i].pcm_tx = NULL;
+        adev->voice.session[i].state.current = CALL_INACTIVE;
+        adev->voice.session[i].state.new = CALL_INACTIVE;
+        adev->voice.session[i].vsid = VOICE_VSID;
+    }
+
+    voice_extn_init(adev);
+}
+
+void voice_update_devices_for_all_voice_usecases(struct audio_device *adev)
+{
+    struct listnode *node;
+    struct audio_usecase *usecase;
+
+    list_for_each(node, &adev->usecase_list) {
+        usecase = node_to_item(node, struct audio_usecase, list);
+        if (usecase->type == VOICE_CALL) {
+            ALOGV("%s: updating device for usecase:%s", __func__,
+                  use_case_table[usecase->id]);
+            usecase->stream.out = adev->current_call_output;
+            select_devices(adev, usecase->id);
+        }
+    }
+}
+
+