commit f6318be8f50845de09b35168a003ce4fe66ca036
author Derek Chen <chenche@codeaurora.org> Mon Jun 12 17:16:24 2017 -0400
committer Derek Chen <chenche@codeaurora.org> Tue Jun 11 16:41:48 2019 -0700
tree e4f2bf7aff86a13cbb714c065c3d27808318bfba
parent af656061ce033fde653715960dd1030003d72bad

hal: support car audio stream for bus devices

Add support for car audio streams and usecases
including media, system notification, navigation
guidance and phone.
The car audio streams are routed to bus devices
with assigned address, which is defined in audio
policy configuration. This enables dynamic mixing
and routing done by Android car framework from
application to AudioFlinger and audio HAL.

Change-Id: I583fc7b5f2e8850b064a3cde5f93693b16c47841

hal/msm8974/platform.h

diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index fba1077..7da728c 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -175,6 +175,10 @@
     SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_HEADSET,
     SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_FB_HEADSET,
     SND_DEVICE_OUT_VOICE_HEARING_AID,
+    SND_DEVICE_OUT_BUS_MEDIA,
+    SND_DEVICE_OUT_BUS_SYS,
+    SND_DEVICE_OUT_BUS_NAV,
+    SND_DEVICE_OUT_BUS_PHN,
     SND_DEVICE_OUT_END,
 
     /*
@@ -311,6 +315,7 @@
     SND_DEVICE_IN_CAMCORDER_SELFIE_INVERT_LANDSCAPE,
     SND_DEVICE_IN_CAMCORDER_SELFIE_PORTRAIT,
     SND_DEVICE_IN_VOICE_HEARING_AID,
+    SND_DEVICE_IN_BUS,
     SND_DEVICE_IN_END,
 
     SND_DEVICE_MAX = SND_DEVICE_IN_END,
@@ -625,6 +630,11 @@
 #define PLAYBACK_INTERACTIVE_STRM_DEVICE7 48
 #define PLAYBACK_INTERACTIVE_STRM_DEVICE8 49
 
+#define MEDIA_PCM_DEVICE DEEP_BUFFER_PCM_DEVICE
+#define SYS_NOTIFICATION_PCM_DEVICE 9
+#define NAV_GUIDANCE_PCM_DEVICE MULTIMEDIA2_PCM_DEVICE
+#define PHONE_PCM_DEVICE 12
+
 #ifdef PLATFORM_APQ8084
 #define FM_RX_VOLUME "Quat MI2S FM RX Volume"
 #elif PLATFORM_MSM8994