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hal: AV sync latency adjustment for non direct profiles 

Presentation position calculation for signed_frames does not
account for encoder/sink device latencies. Adjust frames for
non direct profiles based on BT codec in use.

CRs-Fixed: 2078710
Change-Id: Ic3328326f941380b0ae48534ac5d7be22095da23
This commit is contained in:
Aniket Kumar Lata 2017-07-18 18:19:21 -07:00 committed by Shiv Maliyappanahalli
parent 761ce6cdda
commit ff61315a1b
1 changed files with 8 additions and 1 deletions
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9
hal/audio_hw.c
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@ -3254,7 +3254,7 @@ static uint32_t out_get_latency(const struct audio_stream_out *stream)
(out->config.rate);
}
if ((AUDIO_DEVICE_OUT_BLUETOOTH_A2DP == out->devices) &&
if ((AUDIO_DEVICE_OUT_ALL_A2DP & out->devices) &&
!(out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD))
latency += audio_extn_a2dp_get_encoder_latency();
@ -3717,6 +3717,13 @@ static int out_get_presentation_position(const struct audio_stream_out *stream,
signed_frames -=
(platform_render_latency(out->usecase) * out->sample_rate / 1000000LL);
// Adjustment accounts for A2dp encoder latency with non offload usecases
// Note: Encoder latency is returned in ms, while platform_render_latency in us.
if (AUDIO_DEVICE_OUT_ALL_A2DP & out->devices) {
signed_frames -=
(audio_extn_a2dp_get_encoder_latency() * out->sample_rate / 1000);
}
// It would be unusual for this value to be negative, but check just in case ...
if (signed_frames >= 0) {
*frames = signed_frames;