commit ee3499a47e01f87d864c8a2e471e0205f32ac27b
author Naresh Tanniru <ntanniru@codeaurora.org> Thu Jan 05 14:05:35 2017 +0530
committer Naresh Tanniru <ntanniru@codeaurora.org> Thu Jun 01 19:52:24 2017 +0530
tree 9ec3112cd0d3b17e330355928f5010a79b1f24a0
parent 2a265b09006c346d1e91fba3bf3bd78618f4255c

hal: add timestamp mode support for offload playback streams

Add timestamp mode support for offload playback streams.
Support is added through compressed path, which is configured
internally when timestamp mode is requested.

CRs-fixed: 2016014
Change-Id: I0cc982a51f87abed40e424bc31fe9e013342bb71

hal/audio_hw.c

diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 4fa42e8..15ee7b4 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -2579,9 +2579,12 @@
 {
     struct stream_out *out = (struct stream_out *)stream;
 
-    if (out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)
-        return out->compr_config.fragment_size;
-    else if(out->usecase == USECASE_COMPRESS_VOIP_CALL)
+    if (out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) {
+        if (out->flags & AUDIO_OUTPUT_FLAG_TIMESTAMP)
+            return out->compr_config.fragment_size - sizeof(struct snd_codec_metadata);
+        else
+            return out->compr_config.fragment_size;
+    } else if(out->usecase == USECASE_COMPRESS_VOIP_CALL)
         return voice_extn_compress_voip_out_get_buffer_size(out);
     else if (is_offload_usecase(out->usecase) &&
              out->flags == AUDIO_OUTPUT_FLAG_DIRECT)
@@ -4097,6 +4100,11 @@
          */
         if (!audio_extn_passthru_is_passthrough_stream(out))
             out->bit_width = AUDIO_OUTPUT_BIT_WIDTH;
+
+        if (out->flags & AUDIO_OUTPUT_FLAG_TIMESTAMP)
+            out->compr_config.codec->flags |= COMPRESSED_TIMESTAMP_FLAG;
+        ALOGVV("%s : out->compr_config.codec->flags -> (%#x) ", __func__, out->compr_config.codec->flags);
+
         /*TODO: Do we need to change it for passthrough */
         out->compr_config.codec->format = SND_AUDIOSTREAMFORMAT_RAW;
 
@@ -4159,6 +4167,9 @@
             out->compr_config.fragments = COMPRESS_OFFLOAD_NUM_FRAGMENTS;
         }
 
+        if (out->flags & AUDIO_OUTPUT_FLAG_TIMESTAMP) {
+            out->compr_config.fragment_size += sizeof(struct snd_codec_metadata);
+        }
         if (config->offload_info.format == AUDIO_FORMAT_FLAC)
             out->compr_config.codec->options.flac_dec.sample_size = AUDIO_OUTPUT_BIT_WIDTH;