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Commit f0531e06 authored by Aniket Kumar Lata's avatar Aniket Kumar Lata
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hal: Increase direct PCM buffer duration 

- Increase direct PCM buffer duration (80ms) to receive
  linear time acks on write for fractional sample rates
- Fixes 44.1 Khz timestamp updates.

Change-Id: I0f657bae0d6e4645f2fcf2b37b97014b89544008
parent 21d77253

hal/audio_extn/utils.c

+2 −1
Original line number Diff line number Diff line
@@ -1222,7 +1222,8 @@ uint32_t get_alsa_fragment_size(uint32_t bytes_per_sample, 
     *be multiple of (number of channels * bytes per sample)

     *For writes to succeed, the buffer must be written at address which is multiple of 32

     */

    fragment_size = ALIGN(fragment_size, (bytes_per_sample * noOfChannels * 32));

    fragment_size = ALIGN(fragment_size, (bytes_per_sample * noOfChannels));

    fragment_size = ALIGN(fragment_size, 32);



    ALOGI("PCM offload Fragment size to %d bytes", fragment_size);

    return fragment_size;

hal/msm8974/platform.h

+1 −1
Original line number Diff line number Diff line
@@ -298,7 +298,7 @@ enum { 




/* Used in calculating fragment size for pcm offload */

#define PCM_OFFLOAD_BUFFER_DURATION 40 /* 40 millisecs */

#define PCM_OFFLOAD_BUFFER_DURATION 80 /* 80 millisecs */



/* MAX PCM fragment size cannot be increased  further due

 * to flinger's cblk size of 1mb,and it has to be a multiple of