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This commit is contained in:
Jef 2024-09-24 14:54:57 +02:00
parent 537bcbc862
commit fc06254474
16440 changed files with 4239995 additions and 2 deletions
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72
Src/Plugins/Encoder/enc_wav/WAVEncoder.cpp Normal file
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@ -0,0 +1,72 @@
#include "WAVEncoder.h"
#define rev32(X) ((((DWORD)(X)&0xFF)<<24)|(((DWORD)(X)&0xFF00)<<8)|(((DWORD)(X)&0xFF0000)>>8)|(((DWORD)(X)&0xFF000000)>>24))
WAVEncoder::WAVEncoder(int nch, int srate, int bps, ACMConfig *config)
{
numBytes = 0;
inputFormat.wFormatTag = WAVE_FORMAT_PCM;
inputFormat.nChannels = nch;
inputFormat.nSamplesPerSec = srate;
inputFormat.nAvgBytesPerSec = srate * nch * (bps >> 3);
inputFormat.nBlockAlign = nch * (bps >> 3);
inputFormat.wBitsPerSample = bps;
inputFormat.cbSize = 0;
do_header = config->header;
if (do_header)
first = 44;
}
int WAVEncoder::Encode(int framepos, void *in, int in_avail, int *in_used, void *out, int out_avail)
{
if (first)
{
int valid = min(first, out_avail);
first -= valid;
*in_used = 0;
return valid;
}
int valid = min(in_avail, out_avail);
memcpy(out, in, valid);
*in_used = valid;
numBytes += valid;
return valid;
}
void WAVEncoder::PrepareToFinish()
{}
void WAVEncoder::FinishAudio(const wchar_t *filename)
{
if (!do_header) return;
// open old file
HANDLE tempfile = CreateFileW(filename, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
if (tempfile)
{
// rewrite initial 44 bytes
DWORD bw = 0;
unsigned __int32 t;
t = rev32('RIFF');
WriteFile(tempfile, &t, 4, &bw, 0); // RIFF (4 bytes)
t = (unsigned __int32)numBytes + 36;
bw = 0;WriteFile(tempfile, &t, 4, &bw, 0); // size of chunk (4 bytes)
t = rev32('WAVE');
bw = 0;WriteFile(tempfile, &t, 4, &bw, 0); // WAVE (4 bytes)
t = rev32('fmt ');
bw = 0;WriteFile(tempfile, &t, 4, &bw, 0);// fmt (4 bytes)
t = 16;
bw = 0;WriteFile(tempfile, &t, 4, &bw, 0);// size of chunk (4 bytes)
bw = 0;WriteFile(tempfile, &inputFormat, 16, &bw, 0); // write WAVEFORMAT out (16 bytes)
t = rev32('data');
bw = 0;WriteFile(tempfile, &t, 4, &bw, 0);// data (4 bytes)
bw = 0;WriteFile(tempfile, &numBytes, 4, &bw, 0);// size of chunk (4 bytes)
CloseHandle(tempfile);
}
}