为什么DIRECT SOUND和WAVEIN OUT 的录音那么难搞,怎么录啊

[SLKBINBIN]

录个音就要一堆代码,MCI又只能录8位的11025HZ的,声音质量很恶心

WAVE录进缓存了,怎么写入WAV文件?

这些是我的初始化部分




PBYTE pBuffer[2]; // 用于发送和录音的两块缓冲区
PWAVEHDR pWaveHdr[2]; // 用于录音的PWAVEHDR结构数组
WAVEFORMATEX wavefo ; // 用于打开音频设备的WAVEFORMATEX结构
HWAVEIN hWave ; // 录音设备句柄
int nOut=0; //???


/*****************************************************/

DIRECTSOUND的就没戏了.很麻烦

[SLKBINBIN]

我看了很多代码,全部都是教人怎么录,没教人怎么生成文件的,那样录 了有什么用.

[robusta]

http://topic.csdn.net/t/20040613/17/3088033.html

[robusta]

他人代码。
这是一个WAV文件变MP3文件的代码，不知是否需要。需要lame_enc.dll可网上下载。
以下2行影响MP3的大小和音质，小的MP3可使用了.
代码里需要有
FreeLibrary(hDLL);
是个小问题。

	beConfig.format.LHV1.dwBitrate			= 16; //128;					// MINIMUM BIT RATE

	beConfig.format.LHV1.dwMaxBitrate		= 16;					// MAXIMUM BIT RATE

bool TForm1::ConvertMp3(String strWav, String strMp3)
{
	HINSTANCE	hDLL			=NULL;
	FILE*		pFileIn			=NULL;
	FILE*		pFileOut		=NULL;
	BE_VERSION	Version			={0,};
	BE_CONFIG	beConfig		={0,};

	CHAR		strFileIn[255]	={'0',};
	CHAR		strFileOut[255]	={'0',};

	DWORD		dwSamples		=0;
	DWORD		dwMP3Buffer		=0;
	HBE_STREAM	hbeStream		=0;
	BE_ERR		err				=0;

	PBYTE		pMP3Buffer		=NULL;
	PSHORT		pWAVBuffer		=NULL;

    BEINITSTREAM		beInitStream=NULL;
    BEENCODECHUNK		beEncodeChunk=NULL;
    BEDEINITSTREAM		beDeinitStream=NULL;
    BECLOSESTREAM		beCloseStream=NULL;
    BEVERSION			beVersion=NULL;
    BEWRITEVBRHEADER	beWriteVBRHeader=NULL;
    BEWRITEINFOTAG		beWriteInfoTag=NULL;

	// Setup the file names
	strcpy(strFileIn ,strWav.c_str());
	strcpy(strFileOut,strMp3.c_str());

	// Load lame_enc.dll library (Make sure though that you set the
	// project/settings/debug Working Directory correctly, otherwhise the DLL can't be loaded
	hDLL = LoadLibrary("lame_enc.dll");
	if( NULL == hDLL )
	{
		ShowMessage("Can not load dll.");
		return false;
	}

	// Get Interface functions from the DLL
	beInitStream	= (BEINITSTREAM) GetProcAddress(hDLL, TEXT_BEINITSTREAM);
	beEncodeChunk	= (BEENCODECHUNK) GetProcAddress(hDLL, TEXT_BEENCODECHUNK);
	beDeinitStream	= (BEDEINITSTREAM) GetProcAddress(hDLL, TEXT_BEDEINITSTREAM);
	beCloseStream	= (BECLOSESTREAM) GetProcAddress(hDLL, TEXT_BECLOSESTREAM);
	beVersion		= (BEVERSION) GetProcAddress(hDLL, TEXT_BEVERSION);
	beWriteVBRHeader= (BEWRITEVBRHEADER) GetProcAddress(hDLL,TEXT_BEWRITEVBRHEADER);
	beWriteInfoTag  = (BEWRITEINFOTAG) GetProcAddress(hDLL,TEXT_BEWRITEINFOTAG);

	// Check if all interfaces are present
	if(!beInitStream || !beEncodeChunk || !beDeinitStream || !beCloseStream || !beVersion || !beWriteVBRHeader)
	{
		ShowMessage("Unable to get LAME interfaces");
		return false;
	}

	// Get the version number
	beVersion( &Version );

/*
	printf(
			"lame_enc.dll version %u.%02u (%u/%u/%u)\n"
			"lame_enc Engine %u.%02u\n"
			"lame_enc homepage at %s\n\n",
			Version.byDLLMajorVersion, Version.byDLLMinorVersion,
			Version.byDay, Version.byMonth, Version.wYear,
			Version.byMajorVersion, Version.byMinorVersion,
			Version.zHomepage);
*/

	// Try to open the WAV file, be sure to open it as a binary file!
	pFileIn = fopen( strFileIn, "rb" );

	// Check file open result
	if(pFileIn == NULL)
	{
		ShowMessage("Error opening File");
		return false;
	}

	// Open MP3 file
	pFileOut= fopen(strFileOut,"wb+");

	// Check file open result
	if(pFileOut == NULL)
	{
		ShowMessage("Error creating file");
		return -1;
	}

	memset(&beConfig,0,sizeof(beConfig));					// clear all fields

	// use the LAME config structure
	beConfig.dwConfig = BE_CONFIG_LAME;

	// this are the default settings for testcase.wav
	beConfig.format.LHV1.dwStructVersion	= 1;
	beConfig.format.LHV1.dwStructSize		= sizeof(beConfig);		
	beConfig.format.LHV1.dwSampleRate		= mnSampleRate;				// INPUT FREQUENCY  etc.44100
	beConfig.format.LHV1.dwReSampleRate		= 0;					// DON"T RESAMPLE
	beConfig.format.LHV1.nMode				=
        mnChannels==1? BE_MP3_MODE_MONO : BE_MP3_MODE_STEREO;	// OUTPUT IN STREO
	beConfig.format.LHV1.dwBitrate			= 16; //128;					// MINIMUM BIT RATE
	beConfig.format.LHV1.nPreset			=
        LQP_R3MIX;		// QUALITY PRESET SETTING
	beConfig.format.LHV1.dwMpegVersion		= MPEG1;				// MPEG VERSION (I or II)
	beConfig.format.LHV1.dwPsyModel			= 0;					// USE DEFAULT PSYCHOACOUSTIC MODEL 
	beConfig.format.LHV1.dwEmphasis			= 0;					// NO EMPHASIS TURNED ON
	beConfig.format.LHV1.bOriginal			= TRUE;					// SET ORIGINAL FLAG
	beConfig.format.LHV1.bWriteVBRHeader	= TRUE;					// Write INFO tag

	beConfig.format.LHV1.dwMaxBitrate		= 16;					// MAXIMUM BIT RATE
//	beConfig.format.LHV1.bCRC				= TRUE;					// INSERT CRC
//	beConfig.format.LHV1.bCopyright			= TRUE;					// SET COPYRIGHT FLAG	
//	beConfig.format.LHV1.bPrivate			= TRUE;					// SET PRIVATE FLAG
//	beConfig.format.LHV1.bWriteVBRHeader	= TRUE;					// YES, WRITE THE XING VBR HEADER
//	beConfig.format.LHV1.bEnableVBR			= TRUE;					// USE VBR
//	beConfig.format.LHV1.nVBRQuality		= 5;					// SET VBR QUALITY
	beConfig.format.LHV1.bNoRes				= TRUE;					// No Bit resorvoir

// Preset Test
//	beConfig.format.LHV1.nPreset			= LQP_PHONE;

	// Init the MP3 Stream
	err = beInitStream(&beConfig, &dwSamples, &dwMP3Buffer, &hbeStream);

	// Check result
	if(err != BE_ERR_SUCCESSFUL)
	{
		ShowMessage("Error opening encoding stream");
		return false;
	}


	// Allocate MP3 buffer
	pMP3Buffer = new BYTE[dwMP3Buffer];

	// Allocate WAV buffer
	pWAVBuffer = new SHORT[dwSamples];

	// Check if Buffer are allocated properly
	if(!pMP3Buffer || !pWAVBuffer)
	{
		ShowMessage("Out of memory");
		return false;
	}

	DWORD dwRead=0;
	DWORD dwWrite=0;
	DWORD dwDone=0;
	DWORD dwFileSize=0;

	// Seek to end of file
	fseek(pFileIn,0,SEEK_END);

	// Get the file size
	dwFileSize=ftell(pFileIn);

	// Seek back to start of WAV file,
	// but skip the first 44 bytes, since that's the WAV header
	fseek(pFileIn,44,SEEK_SET);


	// Convert All PCM samples
	while ( (dwRead=fread(pWAVBuffer,sizeof(SHORT),dwSamples,pFileIn)) >0 )
	{
		// Encode samples
		err = beEncodeChunk(hbeStream, dwRead, pWAVBuffer, pMP3Buffer, &dwWrite);

		// Check result
		if(err != BE_ERR_SUCCESSFUL)
		{
			beCloseStream(hbeStream);
			//fprintf(stderr,"beEncodeChunk() failed (%lu)", err);
			return false;
		}
		
		// write dwWrite bytes that are returned in tehe pMP3Buffer to disk
		if(fwrite(pMP3Buffer,1,dwWrite,pFileOut) != dwWrite)
		{
			ShowMessage("Output file write error");
			return false;
		}

		dwDone += dwRead*sizeof(SHORT);

//		printf("Done: %0.2f%%     \r", 100 * (float)dwDone/(float)(dwFileSize));
	}

	// Deinit the stream
	err = beDeinitStream(hbeStream, pMP3Buffer, &dwWrite);

	// Check result
	if(err != BE_ERR_SUCCESSFUL)
	{

		beCloseStream(hbeStream);
//		fprintf(stderr,"beExitStream failed (%lu)", err);
		return false;
	}

	// Are there any bytes returned from the DeInit call?
	// If so, write them to disk
	if( dwWrite )
	{
		if( fwrite( pMP3Buffer, 1, dwWrite, pFileOut ) != dwWrite )
		{
//			fprintf(stderr,"Output file write error");
			return false;
		}
	}

	// close the MP3 Stream
	beCloseStream( hbeStream );

	// Delete WAV buffer
	delete [] pWAVBuffer;

	// Delete MP3 Buffer
	delete [] pMP3Buffer;

	// Close input file
	fclose( pFileIn );

	// Close output file
	fclose( pFileOut );

	if ( beWriteInfoTag )
	{
		// Write the INFO Tag
		beWriteInfoTag( hbeStream, strFileOut );
	}
	else
	{
		beWriteVBRHeader( strFileOut );
	}

	// Were done, return OK result
	return true;

}

[SLKBINBIN]

看不懂

[银点]

建议楼主用Directshow，非常简单，只要你会COM调用就成了

[周药师]

[Quote=引用 5 楼 silverpot 的回复:]
建议楼主用Directshow，非常简单，只要你会COM调用就成了
[/Quote]
顶mm

[SLKBINBIN]

建议楼主用Directshow，非常简单，只要你会COM调用就成了
++++++++++++++++++++++++++++++++

因为我不会COM,所以不简单,如果你没有教我成功录成音,那这个提议是失败的.

[SLKBINBIN]

我用的是C++BUILDER 不是VC++, 用在VC++上的代码不能原封不动的搬到BCB上

[ga6840]

[Quote=引用 7 楼 slkbinbin 的回复:]
建议楼主用Directshow，非常简单，只要你会COM调用就成了
++++++++++++++++++++++++++++++++

因为我不会COM,所以不简单,如果你没有教我成功录成音,那这个提议是失败的.
[/Quote]
为什么要急功近利呢？你看看dx sdk 我认为目前那是最好的学习方法
先编译成功 再试着剪剪代码 最后框架就很明显了
来回看 看得多了就熟悉了