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#include "header_wav.h"
#include <windows.h>
#include "header_avi.h"
#include <mmsystem.h>
#include <bfc/platform/types.h>
#pragma pack(1)
struct WAVEfmt
{
unsigned __int16 encoding;
unsigned __int16 numChannels;
unsigned __int32 sampleRate;
unsigned __int32 avgBytesPerSec;
unsigned __int16 blockAlign;
unsigned __int16 bitsPerSample;
};
#pragma pack()
#ifndef mmioFOURCC
#define mmioFOURCC( ch0, ch1, ch2, ch3 ) \
( (long)(unsigned char)(ch0) | ( (long)(unsigned char)(ch1) << 8 ) | \
( (long)(unsigned char)(ch2) << 16 ) | ( (long)(unsigned char)(ch3) << 24 ) )
#endif /* mmioFOURCC */
HeaderWav::HeaderWav(bool bAllowHttpConnection /* = false */)
: bAllowHttp(bAllowHttpConnection), fh(INVALID_HANDLE_VALUE)
{}
int HeaderWav::getInfos(const wchar_t *filename, bool checkMetadata)
{
unsigned __int32 bytesPerSecond=0;
{
fh = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (fh == INVALID_HANDLE_VALUE) return 0;
}
int riffid = read_dword();
if (riffid != mmioFOURCC('R', 'I', 'F', 'F'))
{
myfclose();
return 0;
}
unsigned __int32 filesize = read_dword();
int aviid = read_dword();
if (aviid != mmioFOURCC('W', 'A', 'V', 'E'))
{
myfclose();
return 0;
}
while (1)
{
int id = read_dword();
if (!id) break;
if (id == mmioFOURCC('L', 'I', 'S', 'T'))
{
unsigned __int32 len = read_dword() - 4;
id = read_dword();
switch (id)
{
case mmioFOURCC('I', 'N', 'F', 'O'):
{
if (!checkMetadata)
{
if (len)
myfseek(len, FILE_CURRENT);
break;
}
while (len)
{
int infoId = read_dword();
unsigned __int32 infoSize = read_dword();
unsigned __int32 chunksize = (infoSize + 1) & (~1);
len -= (chunksize + 8);
switch (infoId)
{
// TODO: IYER for year, but is it string or number?
// TODO: ITRK for track, but is it string or number?
case mmioFOURCC('I', 'C', 'O', 'M'):
{
composer = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
composer[infoSize] = 0;
myfread(composer, infoSize, 1);
chunksize -= infoSize;
}
break;
case mmioFOURCC('I', 'P', 'U', 'B'):
{
publisher = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
publisher[infoSize] = 0;
myfread(publisher, infoSize, 1);
chunksize -= infoSize;
}
break;
case mmioFOURCC('I', 'A', 'L', 'B'):
{
album = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
album[infoSize] = 0;
myfread(album, infoSize, 1);
chunksize -= infoSize;
}
break;
case mmioFOURCC('I', 'G', 'N', 'R'):
{
genre = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
genre[infoSize] = 0;
myfread(genre, infoSize, 1);
chunksize -= infoSize;
}
break;
case mmioFOURCC('I', 'C', 'M', 'T'):
{
comment = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
comment[infoSize] = 0;
myfread(comment, infoSize, 1);
chunksize -= infoSize;
}
break;
case mmioFOURCC('I', 'A', 'R', 'T'):
{
artist = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
artist[infoSize] = 0;
myfread(artist, infoSize, 1);
chunksize -= infoSize;
}
break;
case mmioFOURCC('I', 'N', 'A', 'M'):
{
title = (wchar_t*)calloc(infoSize + 1, sizeof(wchar_t));
title[infoSize] = 0;
myfread(title, infoSize, 1);
chunksize -= infoSize;
}
break;
}
if (chunksize > 0) myfseek(chunksize, FILE_CURRENT);
}
}
break;
}
continue;
}
unsigned __int32 size2 = read_dword();
unsigned __int32 chunksize = (size2 + 1) & (~1);
switch (id)
{
case mmioFOURCC('f', 'm', 't', ' '):
{
WAVEfmt fmt;
size_t l = min(size2, sizeof(fmt));
myfread(&fmt, l, 1);
chunksize -= (unsigned __int32)l;
has_audio=true;
audio_nch=fmt.numChannels;
audio_bps=fmt.bitsPerSample;
audio_srate=fmt.sampleRate;
bytesPerSecond=fmt.avgBytesPerSec;
}
break;
case mmioFOURCC('d','a','t','a'):
{
if (bytesPerSecond)
length = MulDiv(1000, chunksize, bytesPerSecond);
}
break;
}
if (chunksize > 0) myfseek(chunksize, FILE_CURRENT);
}
myfclose();
return 1;
}
size_t HeaderWav::myfread(void *buffer, size_t size, size_t count)
{
DWORD bytesRead = 0;
ReadFile(fh, buffer,(DWORD)(size*count), &bytesRead, NULL);
return bytesRead;
}
int HeaderWav::myfclose()
{
return CloseHandle(fh);
}
// Note; Only supports SEEK_CUR for http (which is what is used)
int HeaderWav::myfseek(long offset, DWORD origin)
{
return SetFilePointer(fh, offset, 0, origin);
}
/* TODO:
__int64 myFileSeek (HANDLE hf, __int64 distance, DWORD MoveMethod)
{
LARGE_INTEGER li;
li.QuadPart = distance;
li.LowPart = SetFilePointer (hf, li.LowPart, &li.HighPart, MoveMethod);
if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR)
{
li.QuadPart = -1;
}
return li.QuadPart;
}
*/
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