commit bf1c87481d62736cab8832e9085c121fbafdbb6b
author SathishKumar Mani <smani@codeaurora.org> Tue Sep 25 23:34:51 2012 -0700
committer Iliyan Malchev <malchev@google.com> Sun Oct 07 16:45:38 2012 -0700
tree 39dba978745f04e7d7f2dd6a59de7a1d38940ec0
parent b357a77dc9c72cb6e327e945421f440052233b51

alsa_sound: Add support for multichannel hdmi

- Multichannel audio support for HDMI for AAC
format with 5.1 channels max.

Bug: 7156174
Change-Id: I42e92fa2b14d35a5882cc6d84c6651a6a4d5092a
Signed-off-by: Iliyan Malchev <malchev@google.com>

alsa_sound/AudioHardwareALSA.h

diff --git a/alsa_sound/AudioHardwareALSA.h b/alsa_sound/AudioHardwareALSA.h
index 957bf75..932b18f 100644
--- a/alsa_sound/AudioHardwareALSA.h
+++ b/alsa_sound/AudioHardwareALSA.h
@@ -63,6 +63,8 @@
 #define RECORD_LATENCY        96000
 #define VOICE_LATENCY         85333
 #define DEFAULT_BUFFER_SIZE   4096
+//4032 = 336(kernel buffer size) * 2(bytes pcm_16) * 6(number of channels)
+#define DEFAULT_MULTI_CHANNEL_BUF_SIZE    4032
 #define DEFAULT_VOICE_BUFFER_SIZE   2048
 #define PLAYBACK_LOW_LATENCY_BUFFER_SIZE   1024
 #define PLAYBACK_LOW_LATENCY  22000