commit 0ea887a9e646af54653b9af75791860a9b4f41da
author vivek mehta <mvivek@codeaurora.org> Wed Aug 26 14:01:20 2015 -0700
committer Gerrit - the friendly Code Review server <code-review@localhost> Thu Sep 03 18:41:43 2015 -0700
tree 450bffc1674ff76ef0d1418fcfd2715047d2d0ef
parent d0750a31087256eddc94050b92dd3152e9f058fb

policy_hal: hal: add support to enable Direct PCM

- add support for direct pcm output
- add support for direct pcm in hal
  if output flag is direct_pcm choose compress offload path
- add support for direct pcm in custom audio policy manager
  force add direct flag when we detect pcm track in music and
  game use case

Change-Id: Ie69c988ef9cd0477efa77611ceddccdd6b17a163

hal/msm8974/platform.c

diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index b5680fb..f410fdf 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -254,6 +254,10 @@
     [USECASE_AUDIO_PLAYBACK_OFFLOAD9] =
                      {PLAYBACK_OFFLOAD_DEVICE9, PLAYBACK_OFFLOAD_DEVICE9},
 #endif
+
+    [USECASE_AUDIO_DIRECT_PCM_OFFLOAD] =
+                     {PLAYBACK_OFFLOAD_DEVICE2, PLAYBACK_OFFLOAD_DEVICE2},
+
     [USECASE_AUDIO_RECORD] = {AUDIO_RECORD_PCM_DEVICE, AUDIO_RECORD_PCM_DEVICE},
     [USECASE_AUDIO_RECORD_COMPRESS] = {COMPRESS_CAPTURE_DEVICE, COMPRESS_CAPTURE_DEVICE},
     [USECASE_AUDIO_RECORD_LOW_LATENCY] = {LOWLATENCY_PCM_DEVICE,
@@ -605,6 +609,7 @@
     {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD8)},
     {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD9)},
 #endif
+    {TO_NAME_INDEX(USECASE_AUDIO_DIRECT_PCM_OFFLOAD)},
     {TO_NAME_INDEX(USECASE_AUDIO_RECORD)},
     {TO_NAME_INDEX(USECASE_AUDIO_RECORD_LOW_LATENCY)},
     {TO_NAME_INDEX(USECASE_VOICE_CALL)},

hal/msm8974/platform.h

diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index fa9f4bb..e655433 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -266,6 +266,9 @@
 #endif
 #endif
 
+// for DIRECT_PCM
+#define PLAYBACK_OFFLOAD_DEVICE2 17
+
 #define COMPRESS_VOIP_CALL_PCM_DEVICE 3
 
 #ifdef PLATFORM_MSM8610