audio: mpq: Move audio output activities to audio_stream_out
Move output activities to audio_stream_out, output activites on
mpq may involve multiple handles for a single hal session, and
needs elaborate handling.
Change-Id: I42b7e16cf316be89cbe22bd70b6c685d89f15f27
diff --git a/hal_mpq/Android.mk b/hal_mpq/Android.mk
index 338ee40..24fca4e 100644
--- a/hal_mpq/Android.mk
+++ b/hal_mpq/Android.mk
@@ -10,6 +10,7 @@
LOCAL_SRC_FILES := \
audio_hw.c \
+ audio_stream_out.c \
$(AUDIO_PLATFORM)/hw_info.c \
$(AUDIO_PLATFORM)/platform.c
diff --git a/hal_mpq/audio_hw.c b/hal_mpq/audio_hw.c
index 8df46be..fb83245 100644
--- a/hal_mpq/audio_hw.c
+++ b/hal_mpq/audio_hw.c
@@ -40,135 +40,26 @@
#include <cutils/str_parms.h>
#include <cutils/properties.h>
#include <cutils/atomic.h>
-#include <cutils/sched_policy.h>
#include <hardware/audio_effect.h>
-#include <system/thread_defs.h>
#include <audio_effects/effect_aec.h>
#include <audio_effects/effect_ns.h>
#include "audio_hw.h"
#include "platform_api.h"
#include <platform.h>
-#include "sound/compress_params.h"
-
-#define COMPRESS_OFFLOAD_FRAGMENT_SIZE (32 * 1024)
-#define COMPRESS_OFFLOAD_NUM_FRAGMENTS 4
-/* ToDo: Check and update a proper value in msec */
-#define COMPRESS_OFFLOAD_PLAYBACK_LATENCY 96
-#define COMPRESS_PLAYBACK_VOLUME_MAX 0x2000
-
-struct pcm_config pcm_config_deep_buffer = {
- .channels = 2,
- .rate = DEFAULT_OUTPUT_SAMPLING_RATE,
- .period_size = DEEP_BUFFER_OUTPUT_PERIOD_SIZE,
- .period_count = DEEP_BUFFER_OUTPUT_PERIOD_COUNT,
- .format = PCM_FORMAT_S16_LE,
- .start_threshold = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4,
- .stop_threshold = INT_MAX,
- .avail_min = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4,
-};
-
-struct pcm_config pcm_config_low_latency = {
- .channels = 2,
- .rate = DEFAULT_OUTPUT_SAMPLING_RATE,
- .period_size = LOW_LATENCY_OUTPUT_PERIOD_SIZE,
- .period_count = LOW_LATENCY_OUTPUT_PERIOD_COUNT,
- .format = PCM_FORMAT_S16_LE,
- .start_threshold = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4,
- .stop_threshold = INT_MAX,
- .avail_min = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4,
-};
-
-struct pcm_config pcm_config_hdmi_multi = {
- .channels = HDMI_MULTI_DEFAULT_CHANNEL_COUNT, /* changed when the stream is opened */
- .rate = DEFAULT_OUTPUT_SAMPLING_RATE, /* changed when the stream is opened */
- .period_size = HDMI_MULTI_PERIOD_SIZE,
- .period_count = HDMI_MULTI_PERIOD_COUNT,
- .format = PCM_FORMAT_S16_LE,
- .start_threshold = 0,
- .stop_threshold = INT_MAX,
- .avail_min = 0,
-};
-
struct pcm_config pcm_config_audio_capture = {
.channels = 2,
.period_count = AUDIO_CAPTURE_PERIOD_COUNT,
.format = PCM_FORMAT_S16_LE,
};
-const char * const use_case_table[AUDIO_USECASE_MAX] = {
- [USECASE_AUDIO_PLAYBACK_DEEP_BUFFER] = "deep-buffer-playback",
- [USECASE_AUDIO_PLAYBACK_LOW_LATENCY] = "low-latency-playback",
- [USECASE_AUDIO_PLAYBACK_MULTI_CH] = "multi-channel-playback",
- [USECASE_AUDIO_PLAYBACK_OFFLOAD] = "compress-offload-playback",
- [USECASE_AUDIO_RECORD] = "audio-record",
- [USECASE_AUDIO_RECORD_COMPRESS] = "audio-record-compress",
- [USECASE_AUDIO_RECORD_LOW_LATENCY] = "low-latency-record",
- [USECASE_AUDIO_RECORD_FM_VIRTUAL] = "fm-virtual-record",
- [USECASE_AUDIO_PLAYBACK_FM] = "play-fm",
- [USECASE_VOICE_CALL] = "voice-call",
-
- [USECASE_VOICE2_CALL] = "voice2-call",
- [USECASE_VOLTE_CALL] = "volte-call",
- [USECASE_QCHAT_CALL] = "qchat-call",
- [USECASE_COMPRESS_VOIP_CALL] = "compress-voip-call",
- [USECASE_INCALL_REC_UPLINK] = "incall-rec-uplink",
- [USECASE_INCALL_REC_DOWNLINK] = "incall-rec-downlink",
- [USECASE_INCALL_REC_UPLINK_AND_DOWNLINK] = "incall-rec-uplink-and-downlink",
- [USECASE_INCALL_MUSIC_UPLINK] = "incall_music_uplink",
- [USECASE_INCALL_MUSIC_UPLINK2] = "incall_music_uplink2",
- [USECASE_AUDIO_SPKR_CALIB_RX] = "spkr-rx-calib",
- [USECASE_AUDIO_SPKR_CALIB_TX] = "spkr-vi-record",
-};
-
-
-#define STRING_TO_ENUM(string) { #string, string }
-
-struct string_to_enum {
- const char *name;
- uint32_t value;
-};
-
-static const struct string_to_enum out_channels_name_to_enum_table[] = {
- STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
- STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
- STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
-};
-
static struct audio_device *adev = NULL;
static pthread_mutex_t adev_init_lock;
static unsigned int audio_device_ref_count;
static int set_voice_volume_l(struct audio_device *adev, float volume);
-static bool is_supported_format(audio_format_t format)
-{
- if (format == AUDIO_FORMAT_MP3 ||
- format == AUDIO_FORMAT_AAC)
- return true;
-
- return false;
-}
-
-static int get_snd_codec_id(audio_format_t format)
-{
- int id = 0;
-
- switch (format) {
- case AUDIO_FORMAT_MP3:
- id = SND_AUDIOCODEC_MP3;
- break;
- case AUDIO_FORMAT_AAC:
- id = SND_AUDIOCODEC_AAC;
- break;
- default:
- ALOGE("%s: Unsupported audio format", __func__);
- }
-
- return id;
-}
-
int enable_audio_route(struct audio_device *adev,
struct audio_usecase *usecase,
bool update_mixer)
@@ -483,34 +374,6 @@
return ret;
}
-/* must be called with hw device mutex locked */
-static int read_hdmi_channel_masks(struct stream_out *out)
-{
- int ret = 0;
- int channels = platform_edid_get_max_channels(out->dev->platform);
-
- switch (channels) {
- /*
- * Do not handle stereo output in Multi-channel cases
- * Stereo case is handled in normal playback path
- */
- case 6:
- ALOGV("%s: HDMI supports 5.1", __func__);
- out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1;
- break;
- case 8:
- ALOGV("%s: HDMI supports 5.1 and 7.1 channels", __func__);
- out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1;
- out->supported_channel_masks[1] = AUDIO_CHANNEL_OUT_7POINT1;
- break;
- default:
- ALOGE("HDMI does not support multi channel playback");
- ret = -ENOSYS;
- break;
- }
- return ret;
-}
-
static audio_usecase_t get_voice_usecase_id_from_list(struct audio_device *adev)
{
struct audio_usecase *usecase;
@@ -751,327 +614,6 @@
return ret;
}
-/* must be called with out->lock locked */
-static int send_offload_cmd_l(struct stream_out* out, int command)
-{
- struct offload_cmd *cmd = (struct offload_cmd *)calloc(1, sizeof(struct offload_cmd));
-
- ALOGVV("%s %d", __func__, command);
-
- cmd->cmd = command;
- list_add_tail(&out->offload_cmd_list, &cmd->node);
- pthread_cond_signal(&out->offload_cond);
- return 0;
-}
-
-/* must be called iwth out->lock locked */
-static void stop_compressed_output_l(struct stream_out *out)
-{
- out->offload_state = OFFLOAD_STATE_IDLE;
- out->playback_started = 0;
- out->send_new_metadata = 1;
- if (out->compr != NULL) {
- compress_stop(out->compr);
- while (out->offload_thread_blocked) {
- pthread_cond_wait(&out->cond, &out->lock);
- }
- }
-}
-
-static void *offload_thread_loop(void *context)
-{
- struct stream_out *out = (struct stream_out *) context;
- struct listnode *item;
-
- out->offload_state = OFFLOAD_STATE_IDLE;
- out->playback_started = 0;
-
- setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_AUDIO);
- set_sched_policy(0, SP_FOREGROUND);
- prctl(PR_SET_NAME, (unsigned long)"Offload Callback", 0, 0, 0);
-
- ALOGV("%s", __func__);
- pthread_mutex_lock(&out->lock);
- for (;;) {
- struct offload_cmd *cmd = NULL;
- stream_callback_event_t event;
- bool send_callback = false;
-
- ALOGVV("%s offload_cmd_list %d out->offload_state %d",
- __func__, list_empty(&out->offload_cmd_list),
- out->offload_state);
- if (list_empty(&out->offload_cmd_list)) {
- ALOGV("%s SLEEPING", __func__);
- pthread_cond_wait(&out->offload_cond, &out->lock);
- ALOGV("%s RUNNING", __func__);
- continue;
- }
-
- item = list_head(&out->offload_cmd_list);
- cmd = node_to_item(item, struct offload_cmd, node);
- list_remove(item);
-
- ALOGVV("%s STATE %d CMD %d out->compr %p",
- __func__, out->offload_state, cmd->cmd, out->compr);
-
- if (cmd->cmd == OFFLOAD_CMD_EXIT) {
- free(cmd);
- break;
- }
-
- if (out->compr == NULL) {
- ALOGE("%s: Compress handle is NULL", __func__);
- pthread_cond_signal(&out->cond);
- continue;
- }
- out->offload_thread_blocked = true;
- pthread_mutex_unlock(&out->lock);
- send_callback = false;
- switch(cmd->cmd) {
- case OFFLOAD_CMD_WAIT_FOR_BUFFER:
- compress_wait(out->compr, -1);
- send_callback = true;
- event = STREAM_CBK_EVENT_WRITE_READY;
- break;
- case OFFLOAD_CMD_PARTIAL_DRAIN:
- compress_next_track(out->compr);
- compress_partial_drain(out->compr);
- send_callback = true;
- event = STREAM_CBK_EVENT_DRAIN_READY;
- break;
- case OFFLOAD_CMD_DRAIN:
- compress_drain(out->compr);
- send_callback = true;
- event = STREAM_CBK_EVENT_DRAIN_READY;
- break;
- default:
- ALOGE("%s unknown command received: %d", __func__, cmd->cmd);
- break;
- }
- pthread_mutex_lock(&out->lock);
- out->offload_thread_blocked = false;
- pthread_cond_signal(&out->cond);
- if (send_callback) {
- out->offload_callback(event, NULL, out->offload_cookie);
- }
- free(cmd);
- }
-
- pthread_cond_signal(&out->cond);
- while (!list_empty(&out->offload_cmd_list)) {
- item = list_head(&out->offload_cmd_list);
- list_remove(item);
- free(node_to_item(item, struct offload_cmd, node));
- }
- pthread_mutex_unlock(&out->lock);
-
- return NULL;
-}
-
-static int create_offload_callback_thread(struct stream_out *out)
-{
- pthread_cond_init(&out->offload_cond, (const pthread_condattr_t *) NULL);
- list_init(&out->offload_cmd_list);
- pthread_create(&out->offload_thread, (const pthread_attr_t *) NULL,
- offload_thread_loop, out);
- return 0;
-}
-
-static int destroy_offload_callback_thread(struct stream_out *out)
-{
- pthread_mutex_lock(&out->lock);
- stop_compressed_output_l(out);
- send_offload_cmd_l(out, OFFLOAD_CMD_EXIT);
-
- pthread_mutex_unlock(&out->lock);
- pthread_join(out->offload_thread, (void **) NULL);
- pthread_cond_destroy(&out->offload_cond);
-
- return 0;
-}
-
-static bool allow_hdmi_channel_config(struct audio_device *adev)
-{
- struct listnode *node;
- struct audio_usecase *usecase;
- bool ret = true;
-
- list_for_each(node, &adev->usecase_list) {
- usecase = node_to_item(node, struct audio_usecase, list);
- if (usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
- /*
- * If voice call is already existing, do not proceed further to avoid
- * disabling/enabling both RX and TX devices, CSD calls, etc.
- * Once the voice call done, the HDMI channels can be configured to
- * max channels of remaining use cases.
- */
- if (usecase->id == USECASE_VOICE_CALL) {
- ALOGD("%s: voice call is active, no change in HDMI channels",
- __func__);
- ret = false;
- break;
- } else if (usecase->id == USECASE_AUDIO_PLAYBACK_MULTI_CH) {
- ALOGD("%s: multi channel playback is active, "
- "no change in HDMI channels", __func__);
- ret = false;
- break;
- }
- }
- }
- return ret;
-}
-
-static int check_and_set_hdmi_channels(struct audio_device *adev,
- unsigned int channels)
-{
- struct listnode *node;
- struct audio_usecase *usecase;
-
- /* Check if change in HDMI channel config is allowed */
- if (!allow_hdmi_channel_config(adev))
- return 0;
-
- if (channels == adev->cur_hdmi_channels) {
- ALOGD("%s: Requested channels are same as current", __func__);
- return 0;
- }
-
- platform_set_hdmi_channels(adev->platform, channels);
- adev->cur_hdmi_channels = channels;
-
- /*
- * Deroute all the playback streams routed to HDMI so that
- * the back end is deactivated. Note that backend will not
- * be deactivated if any one stream is connected to it.
- */
- list_for_each(node, &adev->usecase_list) {
- usecase = node_to_item(node, struct audio_usecase, list);
- if (usecase->type == PCM_PLAYBACK &&
- usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
- disable_audio_route(adev, usecase, true);
- }
- }
-
- /*
- * Enable all the streams disabled above. Now the HDMI backend
- * will be activated with new channel configuration
- */
- list_for_each(node, &adev->usecase_list) {
- usecase = node_to_item(node, struct audio_usecase, list);
- if (usecase->type == PCM_PLAYBACK &&
- usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
- enable_audio_route(adev, usecase, true);
- }
- }
-
- return 0;
-}
-
-static int stop_output_stream(struct stream_out *out)
-{
- int i, ret = 0;
- struct audio_usecase *uc_info;
- struct audio_device *adev = out->dev;
-
- ALOGV("%s: enter: usecase(%d: %s)", __func__,
- out->usecase, use_case_table[out->usecase]);
- uc_info = get_usecase_from_list(adev, out->usecase);
- if (uc_info == NULL) {
- ALOGE("%s: Could not find the usecase (%d) in the list",
- __func__, out->usecase);
- return -EINVAL;
- }
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD &&
- adev->visualizer_stop_output != NULL)
- adev->visualizer_stop_output(out->handle);
-
- /* 1. Get and set stream specific mixer controls */
- disable_audio_route(adev, uc_info, true);
-
- /* 2. Disable the rx device */
- disable_snd_device(adev, uc_info->out_snd_device, true);
-
- list_remove(&uc_info->list);
- free(uc_info);
-
- /* Must be called after removing the usecase from list */
- if (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)
- check_and_set_hdmi_channels(adev, DEFAULT_HDMI_OUT_CHANNELS);
-
- ALOGV("%s: exit: status(%d)", __func__, ret);
- return ret;
-}
-
-int start_output_stream(struct stream_out *out)
-{
- int ret = 0;
- struct audio_usecase *uc_info;
- struct audio_device *adev = out->dev;
-
- ALOGV("%s: enter: usecase(%d: %s) devices(%#x)",
- __func__, out->usecase, use_case_table[out->usecase], out->devices);
- out->pcm_device_id = platform_get_pcm_device_id(out->usecase, PCM_PLAYBACK);
- if (out->pcm_device_id < 0) {
- ALOGE("%s: Invalid PCM device id(%d) for the usecase(%d)",
- __func__, out->pcm_device_id, out->usecase);
- ret = -EINVAL;
- goto error_config;
- }
-
- uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase));
- uc_info->id = out->usecase;
- uc_info->type = PCM_PLAYBACK;
- uc_info->stream.out = out;
- uc_info->devices = out->devices;
- uc_info->in_snd_device = SND_DEVICE_NONE;
- uc_info->out_snd_device = SND_DEVICE_NONE;
-
- /* This must be called before adding this usecase to the list */
- if (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)
- check_and_set_hdmi_channels(adev, out->config.channels);
-
- list_add_tail(&adev->usecase_list, &uc_info->list);
-
- select_devices(adev, out->usecase);
-
- ALOGV("%s: Opening PCM device card_id(%d) device_id(%d)",
- __func__, 0, out->pcm_device_id);
- if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- out->pcm = pcm_open(SOUND_CARD, out->pcm_device_id,
- PCM_OUT | PCM_MONOTONIC, &out->config);
- if (out->pcm && !pcm_is_ready(out->pcm)) {
- ALOGE("%s: %s", __func__, pcm_get_error(out->pcm));
- pcm_close(out->pcm);
- out->pcm = NULL;
- ret = -EIO;
- goto error_open;
- }
- } else {
- out->pcm = NULL;
- out->compr = compress_open(SOUND_CARD, out->pcm_device_id,
- COMPRESS_IN, &out->compr_config);
- if (out->compr && !is_compress_ready(out->compr)) {
- ALOGE("%s: %s", __func__, compress_get_error(out->compr));
- compress_close(out->compr);
- out->compr = NULL;
- ret = -EIO;
- goto error_open;
- }
- if (out->offload_callback)
- compress_nonblock(out->compr, out->non_blocking);
-
- if (adev->visualizer_start_output != NULL)
- adev->visualizer_start_output(out->handle);
- }
- ALOGV("%s: exit", __func__);
- return 0;
-error_open:
- stop_output_stream(out);
-error_config:
- return ret;
-}
-
static int check_input_parameters(uint32_t sample_rate,
audio_format_t format,
int channel_count)
@@ -1128,493 +670,6 @@
return size;
}
-static uint32_t out_get_sample_rate(const struct audio_stream *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
-
- return out->sample_rate;
-}
-
-static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
-{
- return -ENOSYS;
-}
-
-static size_t out_get_buffer_size(const struct audio_stream *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)
- return out->compr_config.fragment_size;
-
- return out->config.period_size * audio_stream_frame_size(stream);
-}
-
-static uint32_t out_get_channels(const struct audio_stream *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
-
- return out->channel_mask;
-}
-
-static audio_format_t out_get_format(const struct audio_stream *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
-
- return out->format;
-}
-
-static int out_set_format(struct audio_stream *stream, audio_format_t format)
-{
- return -ENOSYS;
-}
-
-static int out_standby(struct audio_stream *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
- struct audio_device *adev = out->dev;
-
- ALOGV("%s: enter: usecase(%d: %s)", __func__,
- out->usecase, use_case_table[out->usecase]);
- if (out->usecase == USECASE_COMPRESS_VOIP_CALL) {
- /* Ignore standby in case of voip call because the voip output
- * stream is closed in adev_close_output_stream()
- */
- ALOGV("%s: Ignore Standby in VOIP call", __func__);
- return 0;
- }
-
- pthread_mutex_lock(&out->lock);
- pthread_mutex_lock(&adev->lock);
- if (!out->standby) {
- out->standby = true;
- if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- if (out->pcm) {
- pcm_close(out->pcm);
- out->pcm = NULL;
- }
- } else {
- stop_compressed_output_l(out);
- out->gapless_mdata.encoder_delay = 0;
- out->gapless_mdata.encoder_padding = 0;
- if (out->compr != NULL) {
- compress_close(out->compr);
- out->compr = NULL;
- }
- }
- stop_output_stream(out);
- }
- pthread_mutex_unlock(&adev->lock);
- pthread_mutex_unlock(&out->lock);
- ALOGV("%s: exit", __func__);
- return 0;
-}
-
-static int out_dump(const struct audio_stream *stream, int fd)
-{
- return 0;
-}
-
-static int parse_compress_metadata(struct stream_out *out, struct str_parms *parms)
-{
- int ret = 0;
- char value[32];
- struct compr_gapless_mdata tmp_mdata;
-
- if (!out || !parms) {
- return -EINVAL;
- }
-
- ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_DELAY_SAMPLES, value, sizeof(value));
- if (ret >= 0) {
- tmp_mdata.encoder_delay = atoi(value); //whats a good limit check?
- } else {
- return -EINVAL;
- }
-
- ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_PADDING_SAMPLES, value, sizeof(value));
- if (ret >= 0) {
- tmp_mdata.encoder_padding = atoi(value);
- } else {
- return -EINVAL;
- }
-
- out->gapless_mdata = tmp_mdata;
- out->send_new_metadata = 1;
- ALOGV("%s new encoder delay %u and padding %u", __func__,
- out->gapless_mdata.encoder_delay, out->gapless_mdata.encoder_padding);
-
- return 0;
-}
-
-
-static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
-{
- struct stream_out *out = (struct stream_out *)stream;
- struct audio_device *adev = out->dev;
- struct audio_usecase *usecase;
- struct listnode *node;
- struct str_parms *parms;
- char value[32];
- int ret, val = 0;
- bool select_new_device = false;
-
- ALOGD("%s: enter: usecase(%d: %s) kvpairs: %s",
- __func__, out->usecase, use_case_table[out->usecase], kvpairs);
- parms = str_parms_create_str(kvpairs);
- ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
- if (ret >= 0) {
- val = atoi(value);
- pthread_mutex_lock(&out->lock);
- pthread_mutex_lock(&adev->lock);
-
- /*
- * When HDMI cable is unplugged the music playback is paused and
- * the policy manager sends routing=0. But the audioflinger
- * continues to write data until standby time (3sec).
- * As the HDMI core is turned off, the write gets blocked.
- * Avoid this by routing audio to speaker until standby.
- */
- if (out->devices == AUDIO_DEVICE_OUT_AUX_DIGITAL &&
- val == AUDIO_DEVICE_NONE) {
- val = AUDIO_DEVICE_OUT_SPEAKER;
- }
-
- /*
- * select_devices() call below switches all the usecases on the same
- * backend to the new device. Refer to check_usecases_codec_backend() in
- * the select_devices(). But how do we undo this?
- *
- * For example, music playback is active on headset (deep-buffer usecase)
- * and if we go to ringtones and select a ringtone, low-latency usecase
- * will be started on headset+speaker. As we can't enable headset+speaker
- * and headset devices at the same time, select_devices() switches the music
- * playback to headset+speaker while starting low-lateny usecase for ringtone.
- * So when the ringtone playback is completed, how do we undo the same?
- *
- * We are relying on the out_set_parameters() call on deep-buffer output,
- * once the ringtone playback is ended.
- * NOTE: We should not check if the current devices are same as new devices.
- * Because select_devices() must be called to switch back the music
- * playback to headset.
- */
- if (val != 0) {
- out->devices = val;
-
- if (!out->standby)
- select_devices(adev, out->usecase);
- }
-
- pthread_mutex_unlock(&adev->lock);
- pthread_mutex_unlock(&out->lock);
- }
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- parse_compress_metadata(out, parms);
- }
-
- str_parms_destroy(parms);
- ALOGV("%s: exit: code(%d)", __func__, ret);
- return ret;
-}
-
-static char* out_get_parameters(const struct audio_stream *stream, const char *keys)
-{
- struct stream_out *out = (struct stream_out *)stream;
- struct str_parms *query = str_parms_create_str(keys);
- char *str;
- char value[256];
- struct str_parms *reply = str_parms_create();
- size_t i, j;
- int ret;
- bool first = true;
- ALOGV("%s: enter: keys - %s", __func__, keys);
- ret = str_parms_get_str(query, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value, sizeof(value));
- if (ret >= 0) {
- value[0] = '\0';
- i = 0;
- while (out->supported_channel_masks[i] != 0) {
- for (j = 0; j < ARRAY_SIZE(out_channels_name_to_enum_table); j++) {
- if (out_channels_name_to_enum_table[j].value == out->supported_channel_masks[i]) {
- if (!first) {
- strlcat(value, "|", sizeof(value));
- }
- strlcat(value, out_channels_name_to_enum_table[j].name, sizeof(value));
- first = false;
- break;
- }
- }
- i++;
- }
- str_parms_add_str(reply, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value);
- str = str_parms_to_str(reply);
- }
- str_parms_destroy(query);
- str_parms_destroy(reply);
- ALOGV("%s: exit: returns - %s", __func__, str);
- return str;
-}
-
-static uint32_t out_get_latency(const struct audio_stream_out *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)
- return COMPRESS_OFFLOAD_PLAYBACK_LATENCY;
-
- return (out->config.period_count * out->config.period_size * 1000) /
- (out->config.rate);
-}
-
-static int out_set_volume(struct audio_stream_out *stream, float left,
- float right)
-{
- struct stream_out *out = (struct stream_out *)stream;
- int volume[2];
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_MULTI_CH) {
- /* only take left channel into account: the API is for stereo anyway */
- out->muted = (left == 0.0f);
- return 0;
- } else if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- const char *mixer_ctl_name = "Compress Playback Volume";
- struct audio_device *adev = out->dev;
- struct mixer_ctl *ctl;
-
- ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
- if (!ctl) {
- ALOGE("%s: Could not get ctl for mixer cmd - %s",
- __func__, mixer_ctl_name);
- return -EINVAL;
- }
- volume[0] = (int)(left * COMPRESS_PLAYBACK_VOLUME_MAX);
- volume[1] = (int)(right * COMPRESS_PLAYBACK_VOLUME_MAX);
- mixer_ctl_set_array(ctl, volume, sizeof(volume)/sizeof(volume[0]));
- return 0;
- }
-
- return -ENOSYS;
-}
-
-static ssize_t 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;
-
- pthread_mutex_lock(&out->lock);
- if (out->standby) {
- out->standby = false;
- pthread_mutex_lock(&adev->lock);
- ret = start_output_stream(out);
- pthread_mutex_unlock(&adev->lock);
- /* ToDo: If use case is compress offload should return 0 */
- if (ret != 0) {
- out->standby = true;
- goto exit;
- }
- }
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- ALOGVV("%s: writing buffer (%d bytes) to compress device", __func__, bytes);
- if (out->send_new_metadata) {
- ALOGVV("send new gapless metadata");
- compress_set_gapless_metadata(out->compr, &out->gapless_mdata);
- out->send_new_metadata = 0;
- }
-
- ret = compress_write(out->compr, buffer, bytes);
- ALOGVV("%s: writing buffer (%d bytes) to compress device returned %d", __func__, bytes, ret);
- if (ret >= 0 && ret < (ssize_t)bytes) {
- send_offload_cmd_l(out, OFFLOAD_CMD_WAIT_FOR_BUFFER);
- }
- if (!out->playback_started) {
- compress_start(out->compr);
- out->playback_started = 1;
- out->offload_state = OFFLOAD_STATE_PLAYING;
- }
- pthread_mutex_unlock(&out->lock);
- return ret;
- } else {
- if (out->pcm) {
- if (out->muted)
- memset((void *)buffer, 0, bytes);
- ALOGVV("%s: writing buffer (%d bytes) to pcm device", __func__, bytes);
- ret = pcm_write(out->pcm, (void *)buffer, bytes);
- if (ret == 0)
- out->written += bytes / (out->config.channels * sizeof(short));
- }
- }
-
-exit:
- pthread_mutex_unlock(&out->lock);
-
- if (ret != 0) {
- if (out->pcm)
- ALOGE("%s: error %d - %s", __func__, ret, pcm_get_error(out->pcm));
- out_standby(&out->stream.common);
- usleep(bytes * 1000000 / audio_stream_frame_size(&out->stream.common) /
- out_get_sample_rate(&out->stream.common));
- }
- return bytes;
-}
-
-static int out_get_render_position(const struct audio_stream_out *stream,
- uint32_t *dsp_frames)
-{
- struct stream_out *out = (struct stream_out *)stream;
- *dsp_frames = 0;
- if ((out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) && (dsp_frames != NULL)) {
- pthread_mutex_lock(&out->lock);
- if (out->compr != NULL) {
- compress_get_tstamp(out->compr, (unsigned long *)dsp_frames,
- &out->sample_rate);
- ALOGVV("%s rendered frames %d sample_rate %d",
- __func__, *dsp_frames, out->sample_rate);
- }
- pthread_mutex_unlock(&out->lock);
- return 0;
- } else
- return -EINVAL;
-}
-
-static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
-{
- return 0;
-}
-
-static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
-{
- return 0;
-}
-
-static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
- int64_t *timestamp)
-{
- return -EINVAL;
-}
-
-static int 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 = -1;
- unsigned long dsp_frames;
-
- pthread_mutex_lock(&out->lock);
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- if (out->compr != NULL) {
- compress_get_tstamp(out->compr, &dsp_frames,
- &out->sample_rate);
- ALOGVV("%s rendered frames %ld sample_rate %d",
- __func__, dsp_frames, out->sample_rate);
- *frames = dsp_frames;
- ret = 0;
- /* this is the best we can do */
- clock_gettime(CLOCK_MONOTONIC, timestamp);
- }
- } else {
- if (out->pcm) {
- size_t avail;
- if (pcm_get_htimestamp(out->pcm, &avail, timestamp) == 0) {
- size_t kernel_buffer_size = out->config.period_size * out->config.period_count;
- int64_t signed_frames = out->written - kernel_buffer_size + avail;
- // This adjustment accounts for buffering after app processor.
- // It is based on estimated DSP latency per use case, rather than exact.
- signed_frames -=
- (platform_render_latency(out->usecase) * out->sample_rate / 1000000LL);
-
- // It would be unusual for this value to be negative, but check just in case ...
- if (signed_frames >= 0) {
- *frames = signed_frames;
- ret = 0;
- }
- }
- }
- }
-
- pthread_mutex_unlock(&out->lock);
-
- return ret;
-}
-
-static int out_set_callback(struct audio_stream_out *stream,
- stream_callback_t callback, void *cookie)
-{
- struct stream_out *out = (struct stream_out *)stream;
-
- ALOGV("%s", __func__);
- pthread_mutex_lock(&out->lock);
- out->offload_callback = callback;
- out->offload_cookie = cookie;
- pthread_mutex_unlock(&out->lock);
- return 0;
-}
-
-static int out_pause(struct audio_stream_out* stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
- int status = -ENOSYS;
- ALOGV("%s", __func__);
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- pthread_mutex_lock(&out->lock);
- if (out->compr != NULL && out->offload_state == OFFLOAD_STATE_PLAYING) {
- status = compress_pause(out->compr);
- out->offload_state = OFFLOAD_STATE_PAUSED;
- }
- pthread_mutex_unlock(&out->lock);
- }
- return status;
-}
-
-static int out_resume(struct audio_stream_out* stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
- int status = -ENOSYS;
- ALOGV("%s", __func__);
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- status = 0;
- pthread_mutex_lock(&out->lock);
- if (out->compr != NULL && out->offload_state == OFFLOAD_STATE_PAUSED) {
- status = compress_resume(out->compr);
- out->offload_state = OFFLOAD_STATE_PLAYING;
- }
- pthread_mutex_unlock(&out->lock);
- }
- return status;
-}
-
-static int out_drain(struct audio_stream_out* stream, audio_drain_type_t type )
-{
- struct stream_out *out = (struct stream_out *)stream;
- int status = -ENOSYS;
- ALOGV("%s", __func__);
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- pthread_mutex_lock(&out->lock);
- if (type == AUDIO_DRAIN_EARLY_NOTIFY)
- status = send_offload_cmd_l(out, OFFLOAD_CMD_PARTIAL_DRAIN);
- else
- status = send_offload_cmd_l(out, OFFLOAD_CMD_DRAIN);
- pthread_mutex_unlock(&out->lock);
- }
- return status;
-}
-
-static int out_flush(struct audio_stream_out* stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
- ALOGV("%s", __func__);
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- pthread_mutex_lock(&out->lock);
- stop_compressed_output_l(out);
- pthread_mutex_unlock(&out->lock);
- return 0;
- }
- return -ENOSYS;
-}
-
/** audio_stream_in implementation **/
static uint32_t in_get_sample_rate(const struct audio_stream *stream)
{
@@ -1801,29 +856,6 @@
{
struct stream_in *in = (struct stream_in *)stream;
int status = 0;
- effect_descriptor_t desc;
-
- status = (*effect)->get_descriptor(effect, &desc);
- if (status != 0)
- return status;
-
- pthread_mutex_lock(&in->lock);
- pthread_mutex_lock(&in->dev->lock);
- if ((in->source == AUDIO_SOURCE_VOICE_COMMUNICATION) &&
- in->enable_aec != enable &&
- (memcmp(&desc.type, FX_IID_AEC, sizeof(effect_uuid_t)) == 0)) {
- in->enable_aec = enable;
- if (!in->standby)
- select_devices(in->dev, in->usecase);
- }
- if (in->enable_ns != enable &&
- (memcmp(&desc.type, FX_IID_NS, sizeof(effect_uuid_t)) == 0)) {
- in->enable_ns = enable;
- if (!in->standby)
- select_devices(in->dev, in->usecase);
- }
- pthread_mutex_unlock(&in->dev->lock);
- pthread_mutex_unlock(&in->lock);
return 0;
}
@@ -1842,198 +874,6 @@
return add_remove_audio_effect(stream, effect, false);
}
-static int adev_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)
-{
- struct audio_device *adev = (struct audio_device *)dev;
- struct stream_out *out;
- int i, ret;
-
- ALOGV("%s: enter: sample_rate(%d) channel_mask(%#x) devices(%#x) flags(%#x)",
- __func__, config->sample_rate, config->channel_mask, devices, flags);
- *stream_out = NULL;
- out = (struct stream_out *)calloc(1, sizeof(struct stream_out));
-
- if (devices == AUDIO_DEVICE_NONE)
- devices = AUDIO_DEVICE_OUT_SPEAKER;
-
- out->flags = flags;
- out->devices = devices;
- out->dev = adev;
- out->format = config->format;
- out->sample_rate = config->sample_rate;
- out->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
- out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO;
- out->handle = handle;
-
- /* Init use case and pcm_config */
- if (out->flags == AUDIO_OUTPUT_FLAG_DIRECT &&
- out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
- pthread_mutex_lock(&adev->lock);
- ret = read_hdmi_channel_masks(out);
- pthread_mutex_unlock(&adev->lock);
- if (ret != 0)
- goto error_open;
-
- if (config->sample_rate == 0)
- config->sample_rate = DEFAULT_OUTPUT_SAMPLING_RATE;
- if (config->channel_mask == 0)
- config->channel_mask = AUDIO_CHANNEL_OUT_5POINT1;
-
- out->channel_mask = config->channel_mask;
- out->sample_rate = config->sample_rate;
- out->usecase = USECASE_AUDIO_PLAYBACK_MULTI_CH;
- out->config = pcm_config_hdmi_multi;
- out->config.rate = config->sample_rate;
- out->config.channels = popcount(out->channel_mask);
- out->config.period_size = HDMI_MULTI_PERIOD_BYTES / (out->config.channels * 2);
- } else if (out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) {
- if (config->offload_info.version != AUDIO_INFO_INITIALIZER.version ||
- config->offload_info.size != AUDIO_INFO_INITIALIZER.size) {
- ALOGE("%s: Unsupported Offload information", __func__);
- ret = -EINVAL;
- goto error_open;
- }
- if (!is_supported_format(config->offload_info.format)) {
- ALOGE("%s: Unsupported audio format", __func__);
- ret = -EINVAL;
- goto error_open;
- }
-
- out->compr_config.codec = (struct snd_codec *)
- calloc(1, sizeof(struct snd_codec));
-
- out->usecase = USECASE_AUDIO_PLAYBACK_OFFLOAD;
- if (config->offload_info.channel_mask)
- out->channel_mask = config->offload_info.channel_mask;
- else if (config->channel_mask)
- out->channel_mask = config->channel_mask;
- out->format = config->offload_info.format;
- out->sample_rate = config->offload_info.sample_rate;
-
- out->stream.set_callback = out_set_callback;
- out->stream.pause = out_pause;
- out->stream.resume = out_resume;
- out->stream.drain = out_drain;
- out->stream.flush = out_flush;
-
- out->compr_config.codec->id =
- get_snd_codec_id(config->offload_info.format);
- out->compr_config.fragment_size = COMPRESS_OFFLOAD_FRAGMENT_SIZE;
- out->compr_config.fragments = COMPRESS_OFFLOAD_NUM_FRAGMENTS;
- out->compr_config.codec->sample_rate =
- compress_get_alsa_rate(config->offload_info.sample_rate);
- out->compr_config.codec->bit_rate =
- config->offload_info.bit_rate;
- out->compr_config.codec->ch_in =
- popcount(config->channel_mask);
- out->compr_config.codec->ch_out = out->compr_config.codec->ch_in;
-
- if (flags & AUDIO_OUTPUT_FLAG_NON_BLOCKING)
- out->non_blocking = 1;
-
- out->send_new_metadata = 1;
- create_offload_callback_thread(out);
- ALOGV("%s: offloaded output offload_info version %04x bit rate %d",
- __func__, config->offload_info.version,
- config->offload_info.bit_rate);
- } else if (out->flags & AUDIO_OUTPUT_FLAG_FAST) {
- out->usecase = USECASE_AUDIO_PLAYBACK_LOW_LATENCY;
- out->config = pcm_config_low_latency;
- out->sample_rate = out->config.rate;
- } else {
- out->usecase = USECASE_AUDIO_PLAYBACK_DEEP_BUFFER;
- out->config = pcm_config_deep_buffer;
- out->sample_rate = out->config.rate;
- }
-
- if (flags & AUDIO_OUTPUT_FLAG_PRIMARY) {
- if(adev->primary_output == NULL)
- adev->primary_output = out;
- else {
- ALOGE("%s: Primary output is already opened", __func__);
- ret = -EEXIST;
- goto error_open;
- }
- }
-
- /* Check if this usecase is already existing */
- pthread_mutex_lock(&adev->lock);
- if (get_usecase_from_list(adev, out->usecase) != NULL) {
- ALOGE("%s: Usecase (%d) is already present", __func__, out->usecase);
- pthread_mutex_unlock(&adev->lock);
- ret = -EEXIST;
- goto error_open;
- }
- pthread_mutex_unlock(&adev->lock);
-
- out->stream.common.get_sample_rate = out_get_sample_rate;
- out->stream.common.set_sample_rate = out_set_sample_rate;
- out->stream.common.get_buffer_size = out_get_buffer_size;
- out->stream.common.get_channels = out_get_channels;
- out->stream.common.get_format = out_get_format;
- out->stream.common.set_format = out_set_format;
- out->stream.common.standby = out_standby;
- out->stream.common.dump = out_dump;
- out->stream.common.set_parameters = out_set_parameters;
- out->stream.common.get_parameters = out_get_parameters;
- out->stream.common.add_audio_effect = out_add_audio_effect;
- out->stream.common.remove_audio_effect = out_remove_audio_effect;
- out->stream.get_latency = out_get_latency;
- out->stream.set_volume = out_set_volume;
- out->stream.write = out_write;
- out->stream.get_render_position = out_get_render_position;
- out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
- out->stream.get_presentation_position = out_get_presentation_position;
-
- out->standby = 1;
- /* out->muted = false; by calloc() */
- /* out->written = 0; by calloc() */
-
- pthread_mutex_init(&out->lock, (const pthread_mutexattr_t *) NULL);
- pthread_cond_init(&out->cond, (const pthread_condattr_t *) NULL);
-
- config->format = out->stream.common.get_format(&out->stream.common);
- config->channel_mask = out->stream.common.get_channels(&out->stream.common);
- config->sample_rate = out->stream.common.get_sample_rate(&out->stream.common);
-
- *stream_out = &out->stream;
- ALOGV("%s: exit", __func__);
- return 0;
-
-error_open:
- free(out);
- *stream_out = NULL;
- ALOGD("%s: exit: ret %d", __func__, ret);
- return ret;
-}
-
-static void adev_close_output_stream(struct audio_hw_device *dev,
- struct audio_stream_out *stream)
-{
- struct stream_out *out = (struct stream_out *)stream;
- struct audio_device *adev = out->dev;
- int ret = 0;
-
- ALOGV("%s: enter", __func__);
- out_standby(&stream->common);
-
- if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
- destroy_offload_callback_thread(out);
-
- if (out->compr_config.codec != NULL)
- free(out->compr_config.codec);
- }
- pthread_cond_destroy(&out->cond);
- pthread_mutex_destroy(&out->lock);
- free(stream);
- ALOGV("%s: exit", __func__);
-}
-
static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
{
struct audio_device *adev = (struct audio_device *)dev;
diff --git a/hal_mpq/audio_hw.h b/hal_mpq/audio_hw.h
index 262fda8..e1319a5 100644
--- a/hal_mpq/audio_hw.h
+++ b/hal_mpq/audio_hw.h
@@ -220,6 +220,41 @@
int (*visualizer_stop_output)(audio_io_handle_t);
};
+static const char * const use_case_table[AUDIO_USECASE_MAX] = {
+ [USECASE_AUDIO_PLAYBACK_DEEP_BUFFER] = "deep-buffer-playback",
+ [USECASE_AUDIO_PLAYBACK_LOW_LATENCY] = "low-latency-playback",
+ [USECASE_AUDIO_PLAYBACK_MULTI_CH] = "multi-channel-playback",
+ [USECASE_AUDIO_PLAYBACK_OFFLOAD] = "compress-offload-playback",
+ [USECASE_AUDIO_RECORD] = "audio-record",
+ [USECASE_AUDIO_RECORD_COMPRESS] = "audio-record-compress",
+ [USECASE_AUDIO_RECORD_LOW_LATENCY] = "low-latency-record",
+ [USECASE_AUDIO_RECORD_FM_VIRTUAL] = "fm-virtual-record",
+ [USECASE_AUDIO_PLAYBACK_FM] = "play-fm",
+ [USECASE_VOICE_CALL] = "voice-call",
+
+ [USECASE_VOICE2_CALL] = "voice2-call",
+ [USECASE_VOLTE_CALL] = "volte-call",
+ [USECASE_QCHAT_CALL] = "qchat-call",
+ [USECASE_COMPRESS_VOIP_CALL] = "compress-voip-call",
+ [USECASE_INCALL_REC_UPLINK] = "incall-rec-uplink",
+ [USECASE_INCALL_REC_DOWNLINK] = "incall-rec-downlink",
+ [USECASE_INCALL_REC_UPLINK_AND_DOWNLINK] = "incall-rec-uplink-and-downlink",
+ [USECASE_INCALL_MUSIC_UPLINK] = "incall_music_uplink",
+ [USECASE_INCALL_MUSIC_UPLINK2] = "incall_music_uplink2",
+ [USECASE_AUDIO_SPKR_CALIB_RX] = "spkr-rx-calib",
+ [USECASE_AUDIO_SPKR_CALIB_TX] = "spkr-vi-record",
+};
+
+int adev_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);
+
+void adev_close_output_stream(struct audio_hw_device *dev,
+ struct audio_stream_out *stream);
+
int select_devices(struct audio_device *adev,
audio_usecase_t uc_id);
int disable_audio_route(struct audio_device *adev,
diff --git a/hal_mpq/audio_stream_out.c b/hal_mpq/audio_stream_out.c
new file mode 100644
index 0000000..71eb2f1
--- /dev/null
+++ b/hal_mpq/audio_stream_out.c
@@ -0,0 +1,1157 @@
+/* audio_stream_out.c
+ **
+ ** Copyright 2008-2009 Wind River Systems
+ ** Copyright (c) 2011-2013, The Linux Foundation. All rights reserved
+ ** Not a Contribution, Apache license notifications and license are retained
+ ** for attribution purposes only.
+ **
+ ** 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 "audio_stream_out"
+/*#define LOG_NDEBUG 0*/
+/*#define VERY_VERY_VERBOSE_LOGGING*/
+#ifdef VERY_VERY_VERBOSE_LOGGING
+#define ALOGVV ALOGV
+#else
+#define ALOGVV(a...) do { } while(0)
+#endif
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <math.h>
+#include <dlfcn.h>
+#include <sys/resource.h>
+#include <sys/prctl.h>
+
+#include <cutils/log.h>
+#include <cutils/str_parms.h>
+#include <cutils/properties.h>
+#include <cutils/atomic.h>
+#include <cutils/sched_policy.h>
+
+#include <system/thread_defs.h>
+#include "audio_hw.h"
+#include "platform_api.h"
+#include <platform.h>
+
+#include "sound/compress_params.h"
+
+#define COMPRESS_OFFLOAD_FRAGMENT_SIZE (32 * 1024)
+#define COMPRESS_OFFLOAD_NUM_FRAGMENTS 4
+/* ToDo: Check and update a proper value in msec */
+#define COMPRESS_OFFLOAD_PLAYBACK_LATENCY 96
+#define COMPRESS_PLAYBACK_VOLUME_MAX 0x2000
+
+struct pcm_config pcm_config_deep_buffer = {
+ .channels = 2,
+ .rate = DEFAULT_OUTPUT_SAMPLING_RATE,
+ .period_size = DEEP_BUFFER_OUTPUT_PERIOD_SIZE,
+ .period_count = DEEP_BUFFER_OUTPUT_PERIOD_COUNT,
+ .format = PCM_FORMAT_S16_LE,
+ .start_threshold = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4,
+ .stop_threshold = INT_MAX,
+ .avail_min = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4,
+};
+
+struct pcm_config pcm_config_low_latency = {
+ .channels = 2,
+ .rate = DEFAULT_OUTPUT_SAMPLING_RATE,
+ .period_size = LOW_LATENCY_OUTPUT_PERIOD_SIZE,
+ .period_count = LOW_LATENCY_OUTPUT_PERIOD_COUNT,
+ .format = PCM_FORMAT_S16_LE,
+ .start_threshold = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4,
+ .stop_threshold = INT_MAX,
+ .avail_min = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4,
+};
+
+struct pcm_config pcm_config_hdmi_multi = {
+ .channels = HDMI_MULTI_DEFAULT_CHANNEL_COUNT, /* changed when the stream is opened */
+ .rate = DEFAULT_OUTPUT_SAMPLING_RATE, /* changed when the stream is opened */
+ .period_size = HDMI_MULTI_PERIOD_SIZE,
+ .period_count = HDMI_MULTI_PERIOD_COUNT,
+ .format = PCM_FORMAT_S16_LE,
+ .start_threshold = 0,
+ .stop_threshold = INT_MAX,
+ .avail_min = 0,
+};
+
+#define STRING_TO_ENUM(string) { #string, string }
+
+struct string_to_enum {
+ const char *name;
+ uint32_t value;
+};
+
+static const struct string_to_enum out_channels_name_to_enum_table[] = {
+ STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
+ STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
+ STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
+};
+
+static bool is_supported_format(audio_format_t format)
+{
+ if (format == AUDIO_FORMAT_MP3 ||
+ format == AUDIO_FORMAT_AAC)
+ return true;
+
+ return false;
+}
+
+static int get_snd_codec_id(audio_format_t format)
+{
+ int id = 0;
+
+ switch (format) {
+ case AUDIO_FORMAT_MP3:
+ id = SND_AUDIOCODEC_MP3;
+ break;
+ case AUDIO_FORMAT_AAC:
+ id = SND_AUDIOCODEC_AAC;
+ break;
+ default:
+ ALOGE("%s: Unsupported audio format", __func__);
+ }
+
+ return id;
+}
+
+/* must be called with hw device mutex locked */
+static int read_hdmi_channel_masks(struct stream_out *out)
+{
+ int ret = 0;
+ int channels = platform_edid_get_max_channels(out->dev->platform);
+
+ switch (channels) {
+ /*
+ * Do not handle stereo output in Multi-channel cases
+ * Stereo case is handled in normal playback path
+ */
+ case 6:
+ ALOGV("%s: HDMI supports 5.1", __func__);
+ out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1;
+ break;
+ case 8:
+ ALOGV("%s: HDMI supports 5.1 and 7.1 channels", __func__);
+ out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1;
+ out->supported_channel_masks[1] = AUDIO_CHANNEL_OUT_7POINT1;
+ break;
+ default:
+ ALOGE("HDMI does not support multi channel playback");
+ ret = -ENOSYS;
+ break;
+ }
+ return ret;
+}
+
+/* must be called with out->lock locked */
+static int send_offload_cmd_l(struct stream_out* out, int command)
+{
+ struct offload_cmd *cmd = (struct offload_cmd *)calloc(1, sizeof(struct offload_cmd));
+
+ ALOGVV("%s %d", __func__, command);
+
+ cmd->cmd = command;
+ list_add_tail(&out->offload_cmd_list, &cmd->node);
+ pthread_cond_signal(&out->offload_cond);
+ return 0;
+}
+
+/* must be called iwth out->lock locked */
+static void stop_compressed_output_l(struct stream_out *out)
+{
+ out->offload_state = OFFLOAD_STATE_IDLE;
+ out->playback_started = 0;
+ out->send_new_metadata = 1;
+ if (out->compr != NULL) {
+ compress_stop(out->compr);
+ while (out->offload_thread_blocked) {
+ pthread_cond_wait(&out->cond, &out->lock);
+ }
+ }
+}
+
+static void *offload_thread_loop(void *context)
+{
+ struct stream_out *out = (struct stream_out *) context;
+ struct listnode *item;
+
+ out->offload_state = OFFLOAD_STATE_IDLE;
+ out->playback_started = 0;
+
+ setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_AUDIO);
+ set_sched_policy(0, SP_FOREGROUND);
+ prctl(PR_SET_NAME, (unsigned long)"Offload Callback", 0, 0, 0);
+
+ ALOGV("%s", __func__);
+ pthread_mutex_lock(&out->lock);
+ for (;;) {
+ struct offload_cmd *cmd = NULL;
+ stream_callback_event_t event;
+ bool send_callback = false;
+
+ ALOGVV("%s offload_cmd_list %d out->offload_state %d",
+ __func__, list_empty(&out->offload_cmd_list),
+ out->offload_state);
+ if (list_empty(&out->offload_cmd_list)) {
+ ALOGV("%s SLEEPING", __func__);
+ pthread_cond_wait(&out->offload_cond, &out->lock);
+ ALOGV("%s RUNNING", __func__);
+ continue;
+ }
+
+ item = list_head(&out->offload_cmd_list);
+ cmd = node_to_item(item, struct offload_cmd, node);
+ list_remove(item);
+
+ ALOGVV("%s STATE %d CMD %d out->compr %p",
+ __func__, out->offload_state, cmd->cmd, out->compr);
+
+ if (cmd->cmd == OFFLOAD_CMD_EXIT) {
+ free(cmd);
+ break;
+ }
+
+ if (out->compr == NULL) {
+ ALOGE("%s: Compress handle is NULL", __func__);
+ pthread_cond_signal(&out->cond);
+ continue;
+ }
+ out->offload_thread_blocked = true;
+ pthread_mutex_unlock(&out->lock);
+ send_callback = false;
+ switch(cmd->cmd) {
+ case OFFLOAD_CMD_WAIT_FOR_BUFFER:
+ compress_wait(out->compr, -1);
+ send_callback = true;
+ event = STREAM_CBK_EVENT_WRITE_READY;
+ break;
+ case OFFLOAD_CMD_PARTIAL_DRAIN:
+ compress_next_track(out->compr);
+ compress_partial_drain(out->compr);
+ send_callback = true;
+ event = STREAM_CBK_EVENT_DRAIN_READY;
+ break;
+ case OFFLOAD_CMD_DRAIN:
+ compress_drain(out->compr);
+ send_callback = true;
+ event = STREAM_CBK_EVENT_DRAIN_READY;
+ break;
+ default:
+ ALOGE("%s unknown command received: %d", __func__, cmd->cmd);
+ break;
+ }
+ pthread_mutex_lock(&out->lock);
+ out->offload_thread_blocked = false;
+ pthread_cond_signal(&out->cond);
+ if (send_callback) {
+ out->offload_callback(event, NULL, out->offload_cookie);
+ }
+ free(cmd);
+ }
+
+ pthread_cond_signal(&out->cond);
+ while (!list_empty(&out->offload_cmd_list)) {
+ item = list_head(&out->offload_cmd_list);
+ list_remove(item);
+ free(node_to_item(item, struct offload_cmd, node));
+ }
+ pthread_mutex_unlock(&out->lock);
+
+ return NULL;
+}
+
+static int create_offload_callback_thread(struct stream_out *out)
+{
+ pthread_cond_init(&out->offload_cond, (const pthread_condattr_t *) NULL);
+ list_init(&out->offload_cmd_list);
+ pthread_create(&out->offload_thread, (const pthread_attr_t *) NULL,
+ offload_thread_loop, out);
+ return 0;
+}
+
+static int destroy_offload_callback_thread(struct stream_out *out)
+{
+ pthread_mutex_lock(&out->lock);
+ stop_compressed_output_l(out);
+ send_offload_cmd_l(out, OFFLOAD_CMD_EXIT);
+
+ pthread_mutex_unlock(&out->lock);
+ pthread_join(out->offload_thread, (void **) NULL);
+ pthread_cond_destroy(&out->offload_cond);
+
+ return 0;
+}
+
+static bool allow_hdmi_channel_config(struct audio_device *adev)
+{
+ struct listnode *node;
+ struct audio_usecase *usecase;
+ bool ret = true;
+
+ list_for_each(node, &adev->usecase_list) {
+ usecase = node_to_item(node, struct audio_usecase, list);
+ if (usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
+ /*
+ * If voice call is already existing, do not proceed further to avoid
+ * disabling/enabling both RX and TX devices, CSD calls, etc.
+ * Once the voice call done, the HDMI channels can be configured to
+ * max channels of remaining use cases.
+ */
+ if (usecase->id == USECASE_VOICE_CALL) {
+ ALOGD("%s: voice call is active, no change in HDMI channels",
+ __func__);
+ ret = false;
+ break;
+ } else if (usecase->id == USECASE_AUDIO_PLAYBACK_MULTI_CH) {
+ ALOGD("%s: multi channel playback is active, "
+ "no change in HDMI channels", __func__);
+ ret = false;
+ break;
+ }
+ }
+ }
+ return ret;
+}
+
+static int check_and_set_hdmi_channels(struct audio_device *adev,
+ unsigned int channels)
+{
+ struct listnode *node;
+ struct audio_usecase *usecase;
+
+ /* Check if change in HDMI channel config is allowed */
+ if (!allow_hdmi_channel_config(adev))
+ return 0;
+
+ if (channels == adev->cur_hdmi_channels) {
+ ALOGD("%s: Requested channels are same as current", __func__);
+ return 0;
+ }
+
+ platform_set_hdmi_channels(adev->platform, channels);
+ adev->cur_hdmi_channels = channels;
+
+ /*
+ * Deroute all the playback streams routed to HDMI so that
+ * the back end is deactivated. Note that backend will not
+ * be deactivated if any one stream is connected to it.
+ */
+ list_for_each(node, &adev->usecase_list) {
+ usecase = node_to_item(node, struct audio_usecase, list);
+ if (usecase->type == PCM_PLAYBACK &&
+ usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
+ disable_audio_route(adev, usecase, true);
+ }
+ }
+
+ /*
+ * Enable all the streams disabled above. Now the HDMI backend
+ * will be activated with new channel configuration
+ */
+ list_for_each(node, &adev->usecase_list) {
+ usecase = node_to_item(node, struct audio_usecase, list);
+ if (usecase->type == PCM_PLAYBACK &&
+ usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
+ enable_audio_route(adev, usecase, true);
+ }
+ }
+
+ return 0;
+}
+
+static int stop_output_stream(struct stream_out *out)
+{
+ int i, ret = 0;
+ struct audio_usecase *uc_info;
+ struct audio_device *adev = out->dev;
+
+ ALOGV("%s: enter: usecase(%d: %s)", __func__,
+ out->usecase, use_case_table[out->usecase]);
+ uc_info = get_usecase_from_list(adev, out->usecase);
+ if (uc_info == NULL) {
+ ALOGE("%s: Could not find the usecase (%d) in the list",
+ __func__, out->usecase);
+ return -EINVAL;
+ }
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD &&
+ adev->visualizer_stop_output != NULL)
+ adev->visualizer_stop_output(out->handle);
+
+ /* 1. Get and set stream specific mixer controls */
+ disable_audio_route(adev, uc_info, true);
+
+ /* 2. Disable the rx device */
+ disable_snd_device(adev, uc_info->out_snd_device, true);
+
+ list_remove(&uc_info->list);
+ free(uc_info);
+
+ /* Must be called after removing the usecase from list */
+ if (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)
+ check_and_set_hdmi_channels(adev, DEFAULT_HDMI_OUT_CHANNELS);
+
+ ALOGV("%s: exit: status(%d)", __func__, ret);
+ return ret;
+}
+
+int start_output_stream(struct stream_out *out)
+{
+ int ret = 0;
+ struct audio_usecase *uc_info;
+ struct audio_device *adev = out->dev;
+
+ ALOGV("%s: enter: usecase(%d: %s) devices(%#x)",
+ __func__, out->usecase, use_case_table[out->usecase], out->devices);
+ out->pcm_device_id = platform_get_pcm_device_id(out->usecase, PCM_PLAYBACK);
+ if (out->pcm_device_id < 0) {
+ ALOGE("%s: Invalid PCM device id(%d) for the usecase(%d)",
+ __func__, out->pcm_device_id, out->usecase);
+ ret = -EINVAL;
+ goto error_config;
+ }
+
+ uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase));
+ uc_info->id = out->usecase;
+ uc_info->type = PCM_PLAYBACK;
+ uc_info->stream.out = out;
+ uc_info->devices = out->devices;
+ uc_info->in_snd_device = SND_DEVICE_NONE;
+ uc_info->out_snd_device = SND_DEVICE_NONE;
+
+ /* This must be called before adding this usecase to the list */
+ if (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL)
+ check_and_set_hdmi_channels(adev, out->config.channels);
+
+ list_add_tail(&adev->usecase_list, &uc_info->list);
+
+ select_devices(adev, out->usecase);
+
+ ALOGV("%s: Opening PCM device card_id(%d) device_id(%d)",
+ __func__, 0, out->pcm_device_id);
+ if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ out->pcm = pcm_open(SOUND_CARD, out->pcm_device_id,
+ PCM_OUT | PCM_MONOTONIC, &out->config);
+ if (out->pcm && !pcm_is_ready(out->pcm)) {
+ ALOGE("%s: %s", __func__, pcm_get_error(out->pcm));
+ pcm_close(out->pcm);
+ out->pcm = NULL;
+ ret = -EIO;
+ goto error_open;
+ }
+ } else {
+ out->pcm = NULL;
+ out->compr = compress_open(SOUND_CARD, out->pcm_device_id,
+ COMPRESS_IN, &out->compr_config);
+ if (out->compr && !is_compress_ready(out->compr)) {
+ ALOGE("%s: %s", __func__, compress_get_error(out->compr));
+ compress_close(out->compr);
+ out->compr = NULL;
+ ret = -EIO;
+ goto error_open;
+ }
+ if (out->offload_callback)
+ compress_nonblock(out->compr, out->non_blocking);
+
+ if (adev->visualizer_start_output != NULL)
+ adev->visualizer_start_output(out->handle);
+ }
+ ALOGV("%s: exit", __func__);
+ return 0;
+error_open:
+ stop_output_stream(out);
+error_config:
+ return ret;
+}
+
+static uint32_t out_get_sample_rate(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ return out->sample_rate;
+}
+
+static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
+{
+ return -ENOSYS;
+}
+
+static size_t out_get_buffer_size(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)
+ return out->compr_config.fragment_size;
+
+ return out->config.period_size * audio_stream_frame_size(stream);
+}
+
+static uint32_t out_get_channels(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ return out->channel_mask;
+}
+
+static audio_format_t out_get_format(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ return out->format;
+}
+
+static int out_set_format(struct audio_stream *stream, audio_format_t format)
+{
+ return -ENOSYS;
+}
+
+static int out_standby(struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct audio_device *adev = out->dev;
+
+ ALOGV("%s: enter: usecase(%d: %s)", __func__,
+ out->usecase, use_case_table[out->usecase]);
+ if (out->usecase == USECASE_COMPRESS_VOIP_CALL) {
+ /* Ignore standby in case of voip call because the voip output
+ * stream is closed in adev_close_output_stream()
+ */
+ ALOGV("%s: Ignore Standby in VOIP call", __func__);
+ return 0;
+ }
+
+ pthread_mutex_lock(&out->lock);
+ pthread_mutex_lock(&adev->lock);
+ if (!out->standby) {
+ out->standby = true;
+ if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ if (out->pcm) {
+ pcm_close(out->pcm);
+ out->pcm = NULL;
+ }
+ } else {
+ stop_compressed_output_l(out);
+ out->gapless_mdata.encoder_delay = 0;
+ out->gapless_mdata.encoder_padding = 0;
+ if (out->compr != NULL) {
+ compress_close(out->compr);
+ out->compr = NULL;
+ }
+ }
+ stop_output_stream(out);
+ }
+ pthread_mutex_unlock(&adev->lock);
+ pthread_mutex_unlock(&out->lock);
+ ALOGV("%s: exit", __func__);
+ return 0;
+}
+
+static int out_dump(const struct audio_stream *stream, int fd)
+{
+ return 0;
+}
+
+static int parse_compress_metadata(struct stream_out *out, struct str_parms *parms)
+{
+ int ret = 0;
+ char value[32];
+ struct compr_gapless_mdata tmp_mdata;
+
+ if (!out || !parms) {
+ return -EINVAL;
+ }
+
+ ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_DELAY_SAMPLES, value, sizeof(value));
+ if (ret >= 0) {
+ tmp_mdata.encoder_delay = atoi(value); //whats a good limit check?
+ } else {
+ return -EINVAL;
+ }
+
+ ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_PADDING_SAMPLES, value, sizeof(value));
+ if (ret >= 0) {
+ tmp_mdata.encoder_padding = atoi(value);
+ } else {
+ return -EINVAL;
+ }
+
+ out->gapless_mdata = tmp_mdata;
+ out->send_new_metadata = 1;
+ ALOGV("%s new encoder delay %u and padding %u", __func__,
+ out->gapless_mdata.encoder_delay, out->gapless_mdata.encoder_padding);
+
+ return 0;
+}
+
+static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct audio_device *adev = out->dev;
+ struct audio_usecase *usecase;
+ struct listnode *node;
+ struct str_parms *parms;
+ char value[32];
+ int ret, val = 0;
+ bool select_new_device = false;
+
+ ALOGD("%s: enter: usecase(%d: %s) kvpairs: %s",
+ __func__, out->usecase, use_case_table[out->usecase], kvpairs);
+ parms = str_parms_create_str(kvpairs);
+ ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
+ if (ret >= 0) {
+ val = atoi(value);
+ pthread_mutex_lock(&out->lock);
+ pthread_mutex_lock(&adev->lock);
+
+ /*
+ * When HDMI cable is unplugged the music playback is paused and
+ * the policy manager sends routing=0. But the audioflinger
+ * continues to write data until standby time (3sec).
+ * As the HDMI core is turned off, the write gets blocked.
+ * Avoid this by routing audio to speaker until standby.
+ */
+ if (out->devices == AUDIO_DEVICE_OUT_AUX_DIGITAL &&
+ val == AUDIO_DEVICE_NONE) {
+ val = AUDIO_DEVICE_OUT_SPEAKER;
+ }
+
+ /*
+ * select_devices() call below switches all the usecases on the same
+ * backend to the new device. Refer to check_usecases_codec_backend() in
+ * the select_devices(). But how do we undo this?
+ *
+ * For example, music playback is active on headset (deep-buffer usecase)
+ * and if we go to ringtones and select a ringtone, low-latency usecase
+ * will be started on headset+speaker. As we can't enable headset+speaker
+ * and headset devices at the same time, select_devices() switches the music
+ * playback to headset+speaker while starting low-lateny usecase for ringtone.
+ * So when the ringtone playback is completed, how do we undo the same?
+ *
+ * We are relying on the out_set_parameters() call on deep-buffer output,
+ * once the ringtone playback is ended.
+ * NOTE: We should not check if the current devices are same as new devices.
+ * Because select_devices() must be called to switch back the music
+ * playback to headset.
+ */
+ if (val != 0) {
+ out->devices = val;
+
+ if (!out->standby)
+ select_devices(adev, out->usecase);
+ }
+
+ pthread_mutex_unlock(&adev->lock);
+ pthread_mutex_unlock(&out->lock);
+ }
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ parse_compress_metadata(out, parms);
+ }
+
+ str_parms_destroy(parms);
+ ALOGV("%s: exit: code(%d)", __func__, ret);
+ return ret;
+}
+
+static char* out_get_parameters(const struct audio_stream *stream, const char *keys)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct str_parms *query = str_parms_create_str(keys);
+ char *str;
+ char value[256];
+ struct str_parms *reply = str_parms_create();
+ size_t i, j;
+ int ret;
+ bool first = true;
+ ALOGV("%s: enter: keys - %s", __func__, keys);
+ ret = str_parms_get_str(query, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value, sizeof(value));
+ if (ret >= 0) {
+ value[0] = '\0';
+ i = 0;
+ while (out->supported_channel_masks[i] != 0) {
+ for (j = 0; j < ARRAY_SIZE(out_channels_name_to_enum_table); j++) {
+ if (out_channels_name_to_enum_table[j].value == out->supported_channel_masks[i]) {
+ if (!first) {
+ strlcat(value, "|", sizeof(value));
+ }
+ strlcat(value, out_channels_name_to_enum_table[j].name, sizeof(value));
+ first = false;
+ break;
+ }
+ }
+ i++;
+ }
+ str_parms_add_str(reply, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value);
+ str = str_parms_to_str(reply);
+ }
+ str_parms_destroy(query);
+ str_parms_destroy(reply);
+ ALOGV("%s: exit: returns - %s", __func__, str);
+ return str;
+}
+
+static uint32_t out_get_latency(const struct audio_stream_out *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)
+ return COMPRESS_OFFLOAD_PLAYBACK_LATENCY;
+
+ return (out->config.period_count * out->config.period_size * 1000) /
+ (out->config.rate);
+}
+
+static int out_set_volume(struct audio_stream_out *stream, float left,
+ float right)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ int volume[2];
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_MULTI_CH) {
+ /* only take left channel into account: the API is for stereo anyway */
+ out->muted = (left == 0.0f);
+ return 0;
+ } else if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ const char *mixer_ctl_name = "Compress Playback Volume";
+ struct audio_device *adev = out->dev;
+ struct mixer_ctl *ctl;
+
+ ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
+ if (!ctl) {
+ ALOGE("%s: Could not get ctl for mixer cmd - %s",
+ __func__, mixer_ctl_name);
+ return -EINVAL;
+ }
+ volume[0] = (int)(left * COMPRESS_PLAYBACK_VOLUME_MAX);
+ volume[1] = (int)(right * COMPRESS_PLAYBACK_VOLUME_MAX);
+ mixer_ctl_set_array(ctl, volume, sizeof(volume)/sizeof(volume[0]));
+ return 0;
+ }
+
+ return -ENOSYS;
+}
+
+static ssize_t 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;
+
+ pthread_mutex_lock(&out->lock);
+ if (out->standby) {
+ out->standby = false;
+ pthread_mutex_lock(&adev->lock);
+ ret = start_output_stream(out);
+ pthread_mutex_unlock(&adev->lock);
+ /* ToDo: If use case is compress offload should return 0 */
+ if (ret != 0) {
+ out->standby = true;
+ goto exit;
+ }
+ }
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ ALOGVV("%s: writing buffer (%d bytes) to compress device", __func__, bytes);
+ if (out->send_new_metadata) {
+ ALOGVV("send new gapless metadata");
+ compress_set_gapless_metadata(out->compr, &out->gapless_mdata);
+ out->send_new_metadata = 0;
+ }
+
+ ret = compress_write(out->compr, buffer, bytes);
+ ALOGVV("%s: writing buffer (%d bytes) to compress device returned %d", __func__, bytes, ret);
+ if (ret >= 0 && ret < (ssize_t)bytes) {
+ send_offload_cmd_l(out, OFFLOAD_CMD_WAIT_FOR_BUFFER);
+ }
+ if (!out->playback_started) {
+ compress_start(out->compr);
+ out->playback_started = 1;
+ out->offload_state = OFFLOAD_STATE_PLAYING;
+ }
+ pthread_mutex_unlock(&out->lock);
+ return ret;
+ } else {
+ if (out->pcm) {
+ if (out->muted)
+ memset((void *)buffer, 0, bytes);
+ ALOGVV("%s: writing buffer (%d bytes) to pcm device", __func__, bytes);
+ ret = pcm_write(out->pcm, (void *)buffer, bytes);
+ if (ret == 0)
+ out->written += bytes / (out->config.channels * sizeof(short));
+ }
+ }
+
+exit:
+ pthread_mutex_unlock(&out->lock);
+
+ if (ret != 0) {
+ if (out->pcm)
+ ALOGE("%s: error %d - %s", __func__, ret, pcm_get_error(out->pcm));
+ out_standby(&out->stream.common);
+ usleep(bytes * 1000000 / audio_stream_frame_size(&out->stream.common) /
+ out_get_sample_rate(&out->stream.common));
+ }
+ return bytes;
+}
+
+static int out_get_render_position(const struct audio_stream_out *stream,
+ uint32_t *dsp_frames)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ *dsp_frames = 0;
+ if ((out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) && (dsp_frames != NULL)) {
+ pthread_mutex_lock(&out->lock);
+ if (out->compr != NULL) {
+ compress_get_tstamp(out->compr, (unsigned long *)dsp_frames,
+ &out->sample_rate);
+ ALOGVV("%s rendered frames %d sample_rate %d",
+ __func__, *dsp_frames, out->sample_rate);
+ }
+ pthread_mutex_unlock(&out->lock);
+ return 0;
+ } else
+ return -EINVAL;
+}
+
+static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+ return 0;
+}
+
+static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+ return 0;
+}
+
+static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
+ int64_t *timestamp)
+{
+ return -EINVAL;
+}
+
+static int 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 = -1;
+ unsigned long dsp_frames;
+
+ pthread_mutex_lock(&out->lock);
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ if (out->compr != NULL) {
+ compress_get_tstamp(out->compr, &dsp_frames,
+ &out->sample_rate);
+ ALOGVV("%s rendered frames %ld sample_rate %d",
+ __func__, dsp_frames, out->sample_rate);
+ *frames = dsp_frames;
+ ret = 0;
+ /* this is the best we can do */
+ clock_gettime(CLOCK_MONOTONIC, timestamp);
+ }
+ } else {
+ if (out->pcm) {
+ size_t avail;
+ if (pcm_get_htimestamp(out->pcm, &avail, timestamp) == 0) {
+ size_t kernel_buffer_size = out->config.period_size * out->config.period_count;
+ int64_t signed_frames = out->written - kernel_buffer_size + avail;
+ // This adjustment accounts for buffering after app processor.
+ // It is based on estimated DSP latency per use case, rather than exact.
+ signed_frames -=
+ (platform_render_latency(out->usecase) * out->sample_rate / 1000000LL);
+
+ // It would be unusual for this value to be negative, but check just in case ...
+ if (signed_frames >= 0) {
+ *frames = signed_frames;
+ ret = 0;
+ }
+ }
+ }
+ }
+
+ pthread_mutex_unlock(&out->lock);
+
+ return ret;
+}
+
+static int out_set_callback(struct audio_stream_out *stream,
+ stream_callback_t callback, void *cookie)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ ALOGV("%s", __func__);
+ pthread_mutex_lock(&out->lock);
+ out->offload_callback = callback;
+ out->offload_cookie = cookie;
+ pthread_mutex_unlock(&out->lock);
+ return 0;
+}
+
+static int out_pause(struct audio_stream_out* stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ int status = -ENOSYS;
+ ALOGV("%s", __func__);
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ pthread_mutex_lock(&out->lock);
+ if (out->compr != NULL && out->offload_state == OFFLOAD_STATE_PLAYING) {
+ status = compress_pause(out->compr);
+ out->offload_state = OFFLOAD_STATE_PAUSED;
+ }
+ pthread_mutex_unlock(&out->lock);
+ }
+ return status;
+}
+
+static int out_resume(struct audio_stream_out* stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ int status = -ENOSYS;
+ ALOGV("%s", __func__);
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ status = 0;
+ pthread_mutex_lock(&out->lock);
+ if (out->compr != NULL && out->offload_state == OFFLOAD_STATE_PAUSED) {
+ status = compress_resume(out->compr);
+ out->offload_state = OFFLOAD_STATE_PLAYING;
+ }
+ pthread_mutex_unlock(&out->lock);
+ }
+ return status;
+}
+
+static int out_drain(struct audio_stream_out* stream, audio_drain_type_t type )
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ int status = -ENOSYS;
+ ALOGV("%s", __func__);
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ pthread_mutex_lock(&out->lock);
+ if (type == AUDIO_DRAIN_EARLY_NOTIFY)
+ status = send_offload_cmd_l(out, OFFLOAD_CMD_PARTIAL_DRAIN);
+ else
+ status = send_offload_cmd_l(out, OFFLOAD_CMD_DRAIN);
+ pthread_mutex_unlock(&out->lock);
+ }
+ return status;
+}
+
+static int out_flush(struct audio_stream_out* stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ ALOGV("%s", __func__);
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ pthread_mutex_lock(&out->lock);
+ stop_compressed_output_l(out);
+ pthread_mutex_unlock(&out->lock);
+ return 0;
+ }
+ return -ENOSYS;
+}
+
+int adev_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)
+{
+ struct audio_device *adev = (struct audio_device *)dev;
+ struct stream_out *out;
+ int i, ret;
+
+ ALOGV("%s: enter: sample_rate(%d) channel_mask(%#x) devices(%#x) flags(%#x)",
+ __func__, config->sample_rate, config->channel_mask, devices, flags);
+ *stream_out = NULL;
+ out = (struct stream_out *)calloc(1, sizeof(struct stream_out));
+
+ if (devices == AUDIO_DEVICE_NONE)
+ devices = AUDIO_DEVICE_OUT_SPEAKER;
+
+ out->flags = flags;
+ out->devices = devices;
+ out->dev = adev;
+ out->format = config->format;
+ out->sample_rate = config->sample_rate;
+ out->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
+ out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO;
+ out->handle = handle;
+
+ /* Init use case and pcm_config */
+ if (out->flags == AUDIO_OUTPUT_FLAG_DIRECT &&
+ out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
+ pthread_mutex_lock(&adev->lock);
+ ret = read_hdmi_channel_masks(out);
+ pthread_mutex_unlock(&adev->lock);
+ if (ret != 0)
+ goto error_open;
+
+ if (config->sample_rate == 0)
+ config->sample_rate = DEFAULT_OUTPUT_SAMPLING_RATE;
+ if (config->channel_mask == 0)
+ config->channel_mask = AUDIO_CHANNEL_OUT_5POINT1;
+
+ out->channel_mask = config->channel_mask;
+ out->sample_rate = config->sample_rate;
+ out->usecase = USECASE_AUDIO_PLAYBACK_MULTI_CH;
+ out->config = pcm_config_hdmi_multi;
+ out->config.rate = config->sample_rate;
+ out->config.channels = popcount(out->channel_mask);
+ out->config.period_size = HDMI_MULTI_PERIOD_BYTES / (out->config.channels * 2);
+ } else if (out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) {
+ if (config->offload_info.version != AUDIO_INFO_INITIALIZER.version ||
+ config->offload_info.size != AUDIO_INFO_INITIALIZER.size) {
+ ALOGE("%s: Unsupported Offload information", __func__);
+ ret = -EINVAL;
+ goto error_open;
+ }
+ if (!is_supported_format(config->offload_info.format)) {
+ ALOGE("%s: Unsupported audio format", __func__);
+ ret = -EINVAL;
+ goto error_open;
+ }
+
+ out->compr_config.codec = (struct snd_codec *)
+ calloc(1, sizeof(struct snd_codec));
+
+ out->usecase = USECASE_AUDIO_PLAYBACK_OFFLOAD;
+ if (config->offload_info.channel_mask)
+ out->channel_mask = config->offload_info.channel_mask;
+ else if (config->channel_mask)
+ out->channel_mask = config->channel_mask;
+ out->format = config->offload_info.format;
+ out->sample_rate = config->offload_info.sample_rate;
+
+ out->stream.set_callback = out_set_callback;
+ out->stream.pause = out_pause;
+ out->stream.resume = out_resume;
+ out->stream.drain = out_drain;
+ out->stream.flush = out_flush;
+
+ out->compr_config.codec->id =
+ get_snd_codec_id(config->offload_info.format);
+ out->compr_config.fragment_size = COMPRESS_OFFLOAD_FRAGMENT_SIZE;
+ out->compr_config.fragments = COMPRESS_OFFLOAD_NUM_FRAGMENTS;
+ out->compr_config.codec->sample_rate =
+ compress_get_alsa_rate(config->offload_info.sample_rate);
+ out->compr_config.codec->bit_rate =
+ config->offload_info.bit_rate;
+ out->compr_config.codec->ch_in =
+ popcount(config->channel_mask);
+ out->compr_config.codec->ch_out = out->compr_config.codec->ch_in;
+
+ if (flags & AUDIO_OUTPUT_FLAG_NON_BLOCKING)
+ out->non_blocking = 1;
+
+ out->send_new_metadata = 1;
+ create_offload_callback_thread(out);
+ ALOGV("%s: offloaded output offload_info version %04x bit rate %d",
+ __func__, config->offload_info.version,
+ config->offload_info.bit_rate);
+ } else if (out->flags & AUDIO_OUTPUT_FLAG_FAST) {
+ out->usecase = USECASE_AUDIO_PLAYBACK_LOW_LATENCY;
+ out->config = pcm_config_low_latency;
+ out->sample_rate = out->config.rate;
+ } else {
+ out->usecase = USECASE_AUDIO_PLAYBACK_DEEP_BUFFER;
+ out->config = pcm_config_deep_buffer;
+ out->sample_rate = out->config.rate;
+ }
+
+ if (flags & AUDIO_OUTPUT_FLAG_PRIMARY) {
+ if(adev->primary_output == NULL)
+ adev->primary_output = out;
+ else {
+ ALOGE("%s: Primary output is already opened", __func__);
+ ret = -EEXIST;
+ goto error_open;
+ }
+ }
+
+ /* Check if this usecase is already existing */
+ pthread_mutex_lock(&adev->lock);
+ if (get_usecase_from_list(adev, out->usecase) != NULL) {
+ ALOGE("%s: Usecase (%d) is already present", __func__, out->usecase);
+ pthread_mutex_unlock(&adev->lock);
+ ret = -EEXIST;
+ goto error_open;
+ }
+ pthread_mutex_unlock(&adev->lock);
+
+ out->stream.common.get_sample_rate = out_get_sample_rate;
+ out->stream.common.set_sample_rate = out_set_sample_rate;
+ out->stream.common.get_buffer_size = out_get_buffer_size;
+ out->stream.common.get_channels = out_get_channels;
+ out->stream.common.get_format = out_get_format;
+ out->stream.common.set_format = out_set_format;
+ out->stream.common.standby = out_standby;
+ out->stream.common.dump = out_dump;
+ out->stream.common.set_parameters = out_set_parameters;
+ out->stream.common.get_parameters = out_get_parameters;
+ out->stream.common.add_audio_effect = out_add_audio_effect;
+ out->stream.common.remove_audio_effect = out_remove_audio_effect;
+ out->stream.get_latency = out_get_latency;
+ out->stream.set_volume = out_set_volume;
+ out->stream.write = out_write;
+ out->stream.get_render_position = out_get_render_position;
+ out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
+ out->stream.get_presentation_position = out_get_presentation_position;
+
+ out->standby = 1;
+ /* out->muted = false; by calloc() */
+ /* out->written = 0; by calloc() */
+
+ pthread_mutex_init(&out->lock, (const pthread_mutexattr_t *) NULL);
+ pthread_cond_init(&out->cond, (const pthread_condattr_t *) NULL);
+
+ config->format = out->stream.common.get_format(&out->stream.common);
+ config->channel_mask = out->stream.common.get_channels(&out->stream.common);
+ config->sample_rate = out->stream.common.get_sample_rate(&out->stream.common);
+
+ *stream_out = &out->stream;
+ ALOGV("%s: exit", __func__);
+ return 0;
+
+error_open:
+ free(out);
+ *stream_out = NULL;
+ ALOGD("%s: exit: ret %d", __func__, ret);
+ return ret;
+}
+
+void adev_close_output_stream(struct audio_hw_device *dev,
+ struct audio_stream_out *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct audio_device *adev = out->dev;
+ int ret = 0;
+
+ ALOGV("%s: enter", __func__);
+ out_standby(&stream->common);
+
+ if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
+ destroy_offload_callback_thread(out);
+
+ if (out->compr_config.codec != NULL)
+ free(out->compr_config.codec);
+ }
+ pthread_cond_destroy(&out->cond);
+ pthread_mutex_destroy(&out->lock);
+ free(stream);
+ ALOGV("%s: exit", __func__);
+}