hal: Fix alignement of buffer sent to DSP for multichannel clips
- currently buffer size is Aligned with 96 which is not multiple
of some channels(5,7).
- Buffer size must 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.
- Alignments of (number of channels * bytes per sample)*32 satisfies both
of the above requirements.
Change-Id: I20de875615141a4a331383a5348abd28b97306f7
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index 8acfa43..ce3a3f2 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -3338,8 +3338,7 @@
// To have same PCM samples for all channels, the buffer size requires to
// 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
- // Alignment of 96 satsfies both of the above requirements
- fragment_size = ALIGN(fragment_size, 96);
+ fragment_size = ALIGN(fragment_size, ((bits_per_sample >> 3)* popcount(info->channel_mask) * 32));
ALOGI("PCM offload Fragment size to %d bytes", fragment_size);
return fragment_size;