commit 77780382b45794eb5bc0e8589d9b7c96bb406772
author SathishKumar Mani <smani@codeaurora.org> Fri Sep 21 20:58:33 2012 -0700
committer Iliyan Malchev <malchev@google.com> Wed Sep 26 15:29:55 2012 -0700
tree 531c3546ac162c5607223b7ee4cb97e6ccf6f9f7
parent c669c27ef9c5663692c3dd8818bb6e7fcdc39b7a

alsa_sound: Add support for flexible buffer size for recording

- In the current implementation, all the read calls to the driver
  are limited to 320 bytes only. This results performance overhead
  for recording at higher sampling rates.
- Added support for flexible buffer size to allow upto 4096 bytes.

Bug: 7223456
Change-Id: Ic0522d92de905b04481a0d8daa103c77552257e8
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 0a0b06e..3d952a4 100644
--- a/alsa_sound/AudioHardwareALSA.h
+++ b/alsa_sound/AudioHardwareALSA.h
@@ -65,8 +65,11 @@
 #define DEFAULT_BUFFER_SIZE   4096
 #define DEFAULT_VOICE_BUFFER_SIZE   2048
 #define PLAYBACK_LOW_LATENCY_BUFFER_SIZE   1024
-#define PLAYBACK_LOW_LATENCY  11000
+#define PLAYBACK_LOW_LATENCY  22000
+#define PLAYBACK_LOW_LATENCY_MEASURED  42000
 #define DEFAULT_IN_BUFFER_SIZE 320
+#define MIN_CAPTURE_BUFFER_SIZE_PER_CH   320
+#define MAX_CAPTURE_BUFFER_SIZE_PER_CH   2048
 #define FM_BUFFER_SIZE        1024
 
 #define VOIP_SAMPLING_RATE_8K 8000