//?audiocap.cpp?:?定義控制臺應用程序的入口點。
//

#include?“stdafx.h“
#include?“AudioCapT.h“
#include?

extern?“C“
{
#include?
#include?
#include?
#include?
#include?
#include?
}

#include?
using?namespace?std;
#pragma?comment（lib“avformat.lib“）
#pragma?comment（lib“avcodec.lib“）
#pragma?comment（lib“avutil.lib“）
#pragma?comment（lib“swscale.lib“）
#pragma?comment（lib“swresample.lib“）

bool?FillFltpSample（double?*dst?int?nb_samples?int?nb_channels?char?*?pPcmBuffer?int?nPcmBufLen）
{
	int?nTotal?=?nb_samples*nb_channels?*?4;

	if?（!dst?||?!pPcmBuffer）
		return?false;

	memset（dst?0?nb_samples*nb_channels?*?4）;

	int?nTmp?=?0;

	if?（nTotal?>=?nPcmBufLen）
	{
		nTmp?=?nPcmBufLen;
	}
	else
	{
		nTmp?=?nTotal;
	}

	memcpy（dst?pPcmBuffer?nTmp）;

	return?true;
}


int?_tmain（int?argc?_TCHAR*?argv[]）
{
	int64_t?src_ch_layout?=?av_get_default_channel_layout（2）?dst_ch_layout?=?AV_CH_LAYOUT_STEREO;
	int?src_rate?=?48000?dst_rate?=?44100;
	uint8_t?**src_data?=?NULL?**dst_data?=?NULL;
	int?src_nb_channels?=?0?dst_nb_channels?=?0;
	int?src_linesize?dst_linesize;
	int?src_nb_samples?=?1024?dst_nb_samples?max_dst_nb_samples;
	enum?AVSampleFormat?src_sample_fmt?=?AV_SAMPLE_FMT_FLT?dst_sample_fmt?=?AV_SAMPLE_FMT_S16;
	const?char?*?pszDstFileName?=?“D:\\test44100.pcm“;
	FILE?*?fDstFile?=?NULL;
	int?nDstBufSize?=?0;
	const?char?*?strFmt?=?NULL;
	struct?SwrContext?*?swr_ctx?=?NULL;
	int?nRet?=?0;

	CAudioCapT?ac;

	CoInitialize（NULL）;

	av_register_all（）;

	avcodec_register_all（）;

	fDstFile?=?fopen（pszDstFileName?“wb“）;
	if?（!fDstFile）?{
		printf（“open?file?failed.\n“）;
		return?-1;
	}

	//創建重采樣上下文

	swr_ctx?=?swr_alloc（）;
	if?（!swr_ctx）?
	{
		printf（“swr_alloc?failed.\n“）;
		goto?end;
	}

	av_opt_set_int（swr_ctx?“in_channel_layout“?src_ch_layout?0）;
	av_opt_set_int（swr_ctx?“in_sample_rate“?src_rate?0）;
	av_opt_set_sample_fmt（swr_ctx?“in_sample_fmt“?src_sample_fmt?0）;
	av_opt_set_int（swr_ctx?“out_channel_layout“?dst_ch_layout?0）;
	av_opt_set_int（swr_ctx?“out_sample_rate“?dst_rate?0）;
	av_opt_set_sample_fmt（swr_ctx?“out_sample_fmt“?dst_sample_fmt?0）;


	if?（（nRet?=?swr_init（swr_ctx））?	{
		printf（“Failed?to?initialize?the?resampling?context\n“）;
		goto?end;
	}

	src_nb_channels?=?av_get_channel_layout_nb_channels（src_ch_layout）;

	nRet?=?av_samples_alloc_array_and_samples（&src_data?&src_linesize?src_nb_channels
		src_nb_samples?src_sample_fmt?0）;

	if?（nRet?	{
		printf（“Could?not?allocate?source?samples\n“）;
		goto?end;
	}

	max_dst_nb_samples?=?dst_nb_samples?=?av_rescale_rnd（src_nb_samples?dst_rate?src_rate?AV_ROUND_UP）;
	dst_nb_channels?=?av_get_channel_layout_nb_channels（dst_ch_layout）;
	nRet?=?av_samples_alloc_array_and_samples（&dst_data?&dst_linesi

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

?????文件???????5904??2018-07-10?15:16??audiocap\audiocap\audiocap.cpp

?????文件???????4778??2018-07-09?10:51??audiocap\audiocap\audiocap.vcxproj

?????文件???????1499??2018-07-05?15:48??audiocap\audiocap\audiocap.vcxproj.filters

?????文件???????7927??2018-07-10?11:45??audiocap\audiocap\AudioCapT.cpp

?????文件???????1293??2018-07-09?14:58??audiocap\audiocap\AudioCapT.h

?????文件???????1517??2018-07-04?12:13??audiocap\audiocap\ReadMe.txt

?????文件????????214??2018-07-04?12:13??audiocap\audiocap\stdafx.cpp

?????文件????????234??2018-07-04?12:13??audiocap\audiocap\stdafx.h

?????文件????????236??2018-07-04?12:13??audiocap\audiocap\targetver.h

?????文件????????970??2018-07-04?12:13??audiocap\audiocap.sln

?????文件?????????43??2018-07-06?14:26??audiocap\播放命令.txt

?????目錄??????????0??2018-07-10?15:27??audiocap\audiocap

?????目錄??????????0??2018-07-10?15:26??audiocap

-----------?---------??----------?-----??----

????????????????24615????????????????????13