commit 06f9943ba979151772f956f764cd17be1dd078ba
author Naresh Tanniru <ntanniru@codeaurora.org> Wed Aug 26 14:01:20 2015 -0700
committer Naresh Tanniru <ntanniru@codeaurora.org> Fri Oct 16 11:42:14 2015 +0530
tree 7bad716ab7d698f0612d94c3ce9ff14987095fb4
parent 27fb4059a562e96e506221441f48cf12ac6d0d6b

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 d519764..6f48828 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -260,6 +260,9 @@
     [USECASE_AUDIO_PLAYBACK_ULL] = {MULTIMEDIA3_PCM_DEVICE,
                                     MULTIMEDIA3_PCM_DEVICE},
 
+    [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,
@@ -612,6 +615,7 @@
     {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD9)},
 #endif
     {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_ULL)},
+    {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 4787b86..fdf3400 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -265,6 +265,9 @@
 #endif
 #endif
 
+// for DIRECT_PCM
+#define PLAYBACK_OFFLOAD_DEVICE2 17
+
 #define COMPRESS_VOIP_CALL_PCM_DEVICE 3
 
 #ifdef PLATFORM_MSM8610