Function RiffInitWriteFile

source/Riff.cpp:37–95

static unsigned int g_NumChannels = 2;

bool RiffInitWriteFile(const char* pszFile, unsigned int sample_rate, unsigned int NumChannels)
{
	g_hRiffFile = CreateFile(pszFile, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);

	if(g_hRiffFile == INVALID_HANDLE_VALUE)
		return false;

	g_NumChannels = NumChannels;

	//

	UINT32 temp32;
	UINT16 temp16;

	DWORD dwNumberOfBytesWritten;

	WriteFile(g_hRiffFile, "RIFF", 4, &dwNumberOfBytesWritten, NULL);

	temp32 = 0;				// total size
	dwTotalOffset = SetFilePointer(g_hRiffFile, 0, NULL, FILE_CURRENT);
	WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);

	WriteFile(g_hRiffFile, "WAVE", 4, &dwNumberOfBytesWritten, NULL);

	//

	WriteFile(g_hRiffFile, "fmt ", 4, &dwNumberOfBytesWritten, NULL);

	temp32 = 16;			// format length
	WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);

	temp16 = 1;				// PCM format
	WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);

	temp16 = NumChannels;		// channels
	WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);

	temp32 = sample_rate;	// sample rate
	WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);

	temp32 = sample_rate * 2 * NumChannels;	// bytes/second
	WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);

	temp16 = 2 * NumChannels;	// block align
	WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);

	temp16 = 16;			// bits/sample
	WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);

	//

	WriteFile(g_hRiffFile, "data", 4, &dwNumberOfBytesWritten, NULL);

	temp32 = 0;				// data length
	dwDataOffset = SetFilePointer(g_hRiffFile, 0, NULL, FILE_CURRENT);
	WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);

	return true;