add .gitignore

msext/Class/Common/VoiceConvert/amrwapper/amrFileCodec.h

@@ -0,0 +1,75 @@
+//
+//  amrFileCodec.h
+//  amrDemoForiOS
+//
+//  Created by Tang Xiaoping on 9/27/11.
+//  Copyright 2011 test. All rights reserved.
+//
+#ifndef amrFileCodec_h
+#define amrFileCodec_h
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "interf_dec.h"
+#include "interf_enc.h"
+
+#define AMR_MAGIC_NUMBER "#!AMR\n"
+
+#define PCM_FRAME_SIZE 160 // 8khz 8000*0.02=160
+#define MAX_AMR_FRAME_SIZE 32
+#define AMR_FRAME_COUNT_PER_SECOND 50
+
+typedef struct
+{
+	char chChunkID[4];
+	int nChunkSize;
+}XCHUNKHEADER;
+
+typedef struct
+{
+	short nFormatTag;
+	short nChannels;
+	int nSamplesPerSec;
+	int nAvgBytesPerSec;
+	short nBlockAlign;
+	short nBitsPerSample;
+}WAVEFORMAT;
+
+typedef struct
+{
+	short nFormatTag;
+	short nChannels;
+	int nSamplesPerSec;
+	int nAvgBytesPerSec;
+	short nBlockAlign;
+	short nBitsPerSample;
+	short nExSize;
+}WAVEFORMATX;
+
+typedef struct
+{
+	char chRiffID[4];
+	int nRiffSize;
+	char chRiffFormat[4];
+}RIFFHEADER;
+
+typedef struct
+{
+	char chFmtID[4];
+	int nFmtSize;
+	WAVEFORMAT wf;
+}FMTBLOCK;
+
+// WAVE音频采样频率是8khz 
+// 音频样本单元数 = 8000*0.02 = 160 (由采样频率决定)
+// 声道数 1 : 160
+//        2 : 160*2 = 320
+// bps决定样本(sample)大小
+// bps = 8 --> 8位 unsigned char
+//       16 --> 16位 unsigned short
+int EncodeWAVEFileToAMRFile(const char* pchWAVEFilename, const char* pchAMRFileName, int nChannels, int nBitsPerSample);
+
+// 将AMR文件解码成WAVE文件
+int DecodeAMRFileToWAVEFile(const char* pchAMRFileName, const char* pchWAVEFilename);
+
+#endif