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Commit 2bc7b022 authored by Ravi Kumar Alamanda's avatar Ravi Kumar Alamanda Committed by Eric Laurent
Browse files

hal: add support for ull audio playback 

Add a new use case and mixer paths to support ultra
low latency audio playback. This use case exercises the
ULL mode in the DSP.

Bug: 10546170

Change-Id: I6685dd0f346072029ca51e4ce92856a13e74ee76
parent 788f41f1

hal/audio_hw.c

+4 −0
Original line number Diff line number Diff line
@@ -155,6 +155,7 @@ const char * const use_case_table[AUDIO_USECASE_MAX] = { 
    [USECASE_AUDIO_PLAYBACK_MULTI_CH] = "multi-channel-playback",

    [USECASE_AUDIO_PLAYBACK_OFFLOAD] = "compress-offload-playback",

    [USECASE_AUDIO_PLAYBACK_TTS] = "audio-tts-playback",

    [USECASE_AUDIO_PLAYBACK_ULL] = "audio-ull-playback",



    [USECASE_AUDIO_RECORD] = "audio-record",

    [USECASE_AUDIO_RECORD_LOW_LATENCY] = "low-latency-record",
@@ -2172,6 +2173,9 @@ static int adev_open_output_stream(struct audio_hw_device *dev, 
        } else if (out->flags & AUDIO_OUTPUT_FLAG_TTS) {

            out->usecase = USECASE_AUDIO_PLAYBACK_TTS;

            out->config = pcm_config_deep_buffer;

        } else if (out->flags & AUDIO_OUTPUT_FLAG_RAW) {

            out->usecase = USECASE_AUDIO_PLAYBACK_ULL;

            out->config = pcm_config_low_latency;

        } else {

            out->usecase = USECASE_AUDIO_PLAYBACK_LOW_LATENCY;

            out->config = pcm_config_low_latency;

hal/audio_hw.h

+1 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ enum { 
    USECASE_AUDIO_PLAYBACK_MULTI_CH,

    USECASE_AUDIO_PLAYBACK_OFFLOAD,

    USECASE_AUDIO_PLAYBACK_TTS,

    USECASE_AUDIO_PLAYBACK_ULL,



    /* HFP Use case*/

    USECASE_AUDIO_HFP_SCO,

hal/msm8974/platform.c

+8 −2
Original line number Diff line number Diff line
@@ -136,12 +136,16 @@ static int pcm_device_table[AUDIO_USECASE_MAX][2] = { 
                                         MULTIMEDIA2_PCM_DEVICE},

    [USECASE_AUDIO_PLAYBACK_OFFLOAD] = {PLAYBACK_OFFLOAD_DEVICE,

                                        PLAYBACK_OFFLOAD_DEVICE},

    [USECASE_AUDIO_PLAYBACK_TTS] = {MULTIMEDIA3_PCM_DEVICE,

    [USECASE_AUDIO_PLAYBACK_TTS] = {MULTIMEDIA2_PCM_DEVICE,

                                        MULTIMEDIA2_PCM_DEVICE},

    [USECASE_AUDIO_PLAYBACK_ULL] = {MULTIMEDIA3_PCM_DEVICE,

                                    MULTIMEDIA3_PCM_DEVICE},



    [USECASE_AUDIO_RECORD] = {AUDIO_RECORD_PCM_DEVICE,

                              AUDIO_RECORD_PCM_DEVICE},

    [USECASE_AUDIO_RECORD_LOW_LATENCY] = {LOWLATENCY_PCM_DEVICE,

                                          LOWLATENCY_PCM_DEVICE},



    [USECASE_VOICE_CALL] = {VOICE_CALL_PCM_DEVICE,

                            VOICE_CALL_PCM_DEVICE},

    [USECASE_VOICE2_CALL] = {VOICE2_CALL_PCM_DEVICE, VOICE2_CALL_PCM_DEVICE},
@@ -431,6 +435,8 @@ static const struct name_to_index usecase_name_index[AUDIO_USECASE_MAX] = { 
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_LOW_LATENCY)},

    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_MULTI_CH)},

    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD)},

    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_TTS)},

    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_ULL)},

    {TO_NAME_INDEX(USECASE_AUDIO_RECORD)},

    {TO_NAME_INDEX(USECASE_AUDIO_RECORD_LOW_LATENCY)},

    {TO_NAME_INDEX(USECASE_VOICE_CALL)},