#include?“stdafx.h“
#include?“AudioResample.h“
#include?“stdlib.h“

#ifndef?max
#define?max（ab）????????????（（（a）?>?（b））???（a）?:?（b））
#endif??/*?max?*/

#ifndef?min
#define?min（ab）????????????（（（a）?#endif??/*?min?*/

CAudioResample::CAudioResample（）
	:?m_pSwrCtx（NULL）
	m_nInputChannels（0）
	m_nInputSampleRate（0）
	m_nInputBitwidth（0）
	m_InputsmpFmt（AV_SAMPLE_FMT_NONE）
	m_nOutputChannels（0）
	m_nOutputSampleRate（0）
	m_nOutputBitwidth（0）
	m_OutputsmpFmt（AV_SAMPLE_FMT_NONE）
	m_bNeedResample（false）
{
}


CAudioResample::~CAudioResample（）
{
}

AVSampleFormat?GetSampleFmtByAudioBitWidth（int?nBitWidth）
{
	AVSampleFormat?smpFmt?=?AV_SAMPLE_FMT_NONE;
	switch?（nBitWidth）
	{
	case?8:
		smpFmt?=?AV_SAMPLE_FMT_U8;
		break;
	case?16:
		smpFmt?=?AV_SAMPLE_FMT_S16;
		break;
	case?32:
		smpFmt?=?AV_SAMPLE_FMT_S32;?//AV_SAMPLE_FMT_FLT
		break;
	case?64:
		smpFmt?=?AV_SAMPLE_FMT_S64;?//AV_SAMPLE_FMT_DBL;
		break;
	default:
		break;
	}
	return?smpFmt;
}

//帶切片?
AVSampleFormat?GetSampleFmtPlanarByAudioBitWidth（int?nBitWidth）
{
	AVSampleFormat?smpFmt?=?AV_SAMPLE_FMT_NONE;
	switch?（nBitWidth）
	{
	case?1:
		smpFmt?=?AV_SAMPLE_FMT_U8P;
		break;
	case?2:
		smpFmt?=?AV_SAMPLE_FMT_S16P;
		break;
	case?4:
		smpFmt?=?AV_SAMPLE_FMT_S32P;?//AV_SAMPLE_FMT_FLTP
		break;
	case?8:
		smpFmt?=?AV_SAMPLE_FMT_S64P;?//AV_SAMPLE_FMT_DBLP;
		break;
	default:
		break;
	}
	return?smpFmt;
}

int?CAudioResample::AudioResample（char?*pInputAudioBuf?int?nInputAudioSize?int?nInputSampleRate?int?nInputBitwidth?int?nInputChannelNo
								??char?*pOutputAudioBuf?int?nOutputMaxBufSize?int?&nOutputBufSize?int?nOutputSampleRate?int?nOutputBitwidth?int?nOutputChannelNo）
{
	try{
		int?nResult?=?0;
		if?（nInputSampleRate?==?nOutputSampleRate?&&?nInputBitwidth?==?nOutputBitwidth?&&?nInputChannelNo?==?nOutputChannelNo）
		{
			nOutputBufSize?=?min（nInputAudioSize?nOutputMaxBufSize）;
			memset（pOutputAudioBuf?0?nOutputMaxBufSize）;
			memcpy（pOutputAudioBuf?pInputAudioBuf?nOutputBufSize）;
		}
		else
		{
			SwrContext*?pSwrCtx?=?swr_alloc（）;
			if?（pSwrCtx）
			{
				int64_t?nInLayout?=?av_get_default_channel_layout（nInputChannelNo）;
				int64_t?nOutLayout?=?av_get_default_channel_layout（nOutputChannelNo）;
				AVSampleFormat?smpFmtIn?=?GetSampleFmtByAudioBitWidth（nInputBitwidth）;
				AVSampleFormat?smpFmtOut?=?GetSampleFmtByAudioBitWidth（nOutputBitwidth）;

				pSwrCtx?=?swr_alloc_set_opts（pSwrCtx?nOutLayout?smpFmtOut
											?nOutputSampleRate?nInLayout
											?smpFmtIn
											?nInputSampleRate?0?NULL）;
				if?（swr_init（pSwrCtx）?>=?0）
				{
					int?nInBufIndex?=?0;	//輸入AudioData索引
					int?nOutBufIndex?=?0;	//輸出AudioData索引
					nOutputBufSize?=?0;		//Reset實際輸出AudioData大小
					int?nResampleDataSize?=?0;//Resample后大小
					memset（pOutputAudioBuf?0?nOutputMaxBufSize）;
					const?int?nConvertSample?=?1024;	//每次讀取1024個采樣
					const?int?nConvertSam

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????376492??2017-05-19?20:30??lib\x64\avutil.lib

?????文件??????18774??2017-05-19?20:30??lib\x64\swresample.lib

?????文件?????374636??2017-05-19?20:19??lib\x86\avutil.lib

?????文件??????18696??2017-05-19?20:19??lib\x86\swresample.lib

?????文件???????4575??2017-05-19?20:19??include\libavutil\attributes.h

?????文件????????170??2017-05-19?20:19??include\libavutil\avconfig.h

?????文件???????9576??2017-05-19?20:19??include\libavutil\avutil.h

?????文件??????10646??2017-05-19?20:19??include\libavutil\buffer.h

?????文件???????9613??2017-05-19?20:19??include\libavutil\channel_layout.h

?????文件??????15776??2017-05-19?20:19??include\libavutil\common.h

?????文件???????8275??2017-05-19?20:19??include\libavutil\dict.h

?????文件???????5468??2017-05-19?20:19??include\libavutil\error.h

?????文件??????23866??2017-05-19?20:19??include\libavutil\frame.h

?????文件???????1726??2017-05-19?20:19??include\libavutil\intfloat.h

?????文件??????11674??2017-05-19?20:19??include\libavutil\log.h

?????文件???????1249??2017-05-19?20:19??include\libavutil\macros.h

?????文件???????7945??2017-05-19?20:19??include\libavutil\mathematics.h

?????文件??????23485??2017-05-19?20:19??include\libavutil\mem.h

?????文件??????32424??2017-05-19?20:19??include\libavutil\pixfmt.h

?????文件???????5844??2017-05-19?20:19??include\libavutil\rational.h

?????文件??????10318??2017-05-19?20:19??include\libavutil\samplefmt.h

?????文件???????4865??2017-05-19?20:19??include\libavutil\version.h

?????文件??????21885??2017-05-19?20:30??include\libswresample\swresample.h

?????文件???????1718??2017-05-19?20:30??include\libswresample\version.h

?????文件??????10964??2017-09-21?15:05??main.cpp

?????文件??????10071??2017-09-21?15:02??AudioResample.cpp

?????文件????????979??2017-09-21?14:37??AudioResample.vcxproj.user

?????文件???????2191??2017-09-14?10:33??AudioResample.h

?????文件???????8611??2017-09-13?16:47??AudioResample.vcxproj

?????文件???????5705??2017-09-12?11:21??Wave.cpp

............此處省略24個文件信息