From a8c60a91233b6ba022a862bf273a62a53d1d8813 Mon Sep 17 00:00:00 2001
From: Anton Rogozin <ant.rogozin@samsung.com>
Date: Wed, 15 Sep 2010 14:17:54 +0900
Subject: libaudio: updating supported recording sample rates

getInputBufferSize() function was added to AudioHardwareALSA for supporting of other sample rates in addition to 8 kHz

Change-Id: I0bb7aa333f7c51135a3bc8b65c5e5528946c48d3
---
 libaudio/AudioHardwareALSA.cpp | 29 +++++++++++++++++++++++++++++
 libaudio/AudioHardwareALSA.h   |  4 ++++
 2 files changed, 33 insertions(+)
 mode change 100644 => 100755 libaudio/AudioHardwareALSA.h

(limited to 'libaudio')

diff --git a/libaudio/AudioHardwareALSA.cpp b/libaudio/AudioHardwareALSA.cpp
index bb6a8fc..88598b7 100644
--- a/libaudio/AudioHardwareALSA.cpp
+++ b/libaudio/AudioHardwareALSA.cpp
@@ -33,6 +33,8 @@
 
 #include <alsa/asoundlib.h>
 #include "AudioHardwareALSA.h"
+#define READ_FRAME_SIZE 2080
+#define READ_FRAME_SIZE_STANDARD 4160
 
 #if defined SEC_IPC
 // sangsu fix : headers for IPC
@@ -670,6 +672,33 @@ status_t AudioHardwareALSA::dump(int fd, const Vector<String16>& args)
     return NO_ERROR;
 }
 
+
+size_t AudioHardwareALSA::getInputBufferSize(uint32_t sampleRate, int format, int channelCount)
+{
+    if (sampleRate != 8000  && sampleRate != 11025 && sampleRate != 16000 && sampleRate != 22050 &&
+        sampleRate != 24000 && sampleRate != 32000 && sampleRate != 44100 && sampleRate != 48000) {
+        LOGW("getInputBufferSize bad sampling rate: %d", sampleRate);
+        return 0;
+    }
+    if (format != AudioSystem::PCM_16_BIT) {
+        LOGW("getInputBufferSize bad format: %d", format);
+        return 0;
+    }
+    if (channelCount != 1) {
+        LOGW("getInputBufferSize bad channel count: %d", channelCount);
+        return 0;
+    }
+
+#if defined SEC_SWP_SOUND
+    if (sampleRate == 32000 || sampleRate == 44100 || sampleRate == 48000)
+        return READ_FRAME_SIZE_STANDARD;
+    else
+        return READ_FRAME_SIZE;
+#else /* SEC_SWP_SOUND */
+    return 320;
+#endif /* SEC_SWP_SOUND */
+}
+
 // ----------------------------------------------------------------------------
 
 ALSAStreamOps::ALSAStreamOps() :
diff --git a/libaudio/AudioHardwareALSA.h b/libaudio/AudioHardwareALSA.h
old mode 100644
new mode 100755
index 9774f88..5a4b5d5
--- a/libaudio/AudioHardwareALSA.h
+++ b/libaudio/AudioHardwareALSA.h
@@ -347,6 +347,10 @@ namespace android
             // mic mute
             virtual status_t        setMicMute(bool state);
             virtual status_t        getMicMute(bool* state);
+		virtual size_t getInputBufferSize(
+			uint32_t sampleRate,
+			int format,
+			int channelCount);
 #if defined TURN_ON_DEVICE_ONLY_USE
                 virtual int             setMicStatus(int on);   // To deliver status of input stream(activated or not). If it's activated, doesn't turn off codec.
 #endif
-- 
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