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Commit 7249d667 authored by Karthik Reddy Katta's avatar Karthik Reddy Katta Committed by Gerrit - the friendly Code Review server
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policy_hal: Add voip changes to audio policy 

Add support for voip path where voip driver is
used instead of audio playback/record path for
voip application.

Change-Id: Ie451ea683c90e02fdcdc5b9702649e73a55ab8c2
parent c60f6fab

policy_hal/AudioPolicyManager.cpp

+46 −0
Original line number Diff line number Diff line
@@ -1186,6 +1186,52 @@ audio_io_handle_t AudioPolicyManagerCustom::getOutputForDevice( 
        ALOGE("Offloading only allowed with music stream");

        return 0;

       }



    if ((stream == AUDIO_STREAM_VOICE_CALL) &&

        (channelMask == 1) &&

        (samplingRate == 8000 || samplingRate == 16000)) {

        // Allow Voip direct output only if:

        // audio mode is MODE_IN_COMMUNCATION; AND

        // voip output is not opened already; AND

        // requested sample rate matches with that of voip input stream (if opened already)

        int value = 0;

        uint32_t mode = 0, voipOutCount = 1, voipSampleRate = 1;

        String8 valueStr = mpClientInterface->getParameters((audio_io_handle_t)0,

                                                           String8("audio_mode"));

        AudioParameter result = AudioParameter(valueStr);

        if (result.getInt(String8("audio_mode"), value) == NO_ERROR) {

            mode = value;

        }



        valueStr =  mpClientInterface->getParameters((audio_io_handle_t)0,

                                              String8("voip_out_stream_count"));

        result = AudioParameter(valueStr);

        if (result.getInt(String8("voip_out_stream_count"), value) == NO_ERROR) {

            voipOutCount = value;

        }



        valueStr = mpClientInterface->getParameters((audio_io_handle_t)0,

                                              String8("voip_sample_rate"));

        result = AudioParameter(valueStr);

        if (result.getInt(String8("voip_sample_rate"), value) == NO_ERROR) {

            voipSampleRate = value;

        }



        if ((mode == AUDIO_MODE_IN_COMMUNICATION) && (voipOutCount == 0) &&

            ((voipSampleRate == 0) || (voipSampleRate == samplingRate))) {

            if (audio_is_linear_pcm(format)) {

                char propValue[PROPERTY_VALUE_MAX] = {0};

                property_get("use.voice.path.for.pcm.voip", propValue, "0");

                bool voipPcmSysPropEnabled = !strncmp("true", propValue, sizeof("true"));

                if (voipPcmSysPropEnabled && (format == AUDIO_FORMAT_PCM_16_BIT)) {

                    flags = (audio_output_flags_t)((flags &~AUDIO_OUTPUT_FLAG_FAST) |

                                AUDIO_OUTPUT_FLAG_VOIP_RX | AUDIO_OUTPUT_FLAG_DIRECT);

                    ALOGD("Set VoIP and Direct output flags for PCM format");

                }

            }

        }

    }



#ifdef VOICE_CONCURRENCY

    char propValue[PROPERTY_VALUE_MAX];

    bool prop_play_enabled=false, prop_voip_enabled = false;