82 lines
1.7 KiB
C++
82 lines
1.7 KiB
C++
|
#include <windows.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#include <ogg/ogg.h>
|
||
|
|
#include <vorbis/vorbisfile.h>
|
||
|
|
|
||
|
|
static size_t callback_fread(void *ptr, size_t size, size_t nmemb, HANDLE hFile)
|
||
|
|
{
|
||
|
|
DWORD bw = 0;
|
||
|
|
ReadFile(hFile,ptr,(DWORD)(size*nmemb),&bw,0);
|
||
|
|
return bw/size;
|
||
|
|
}
|
||
|
|
|
||
|
|
static size_t callback_write(void * ptr, size_t size, size_t nmemb, HANDLE hFile)
|
||
|
|
{
|
||
|
|
DWORD bw = 0;
|
||
|
|
WriteFile(hFile,ptr,(DWORD)(size*nmemb),&bw,0);
|
||
|
|
return bw/size;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int callback_fseek(HANDLE hFile, __int64 offset, int whence)
|
||
|
|
{
|
||
|
|
__int64 temp = offset;
|
||
|
|
SetFilePointer(hFile,*(DWORD*)&temp,((long*)&temp+1),whence);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int callback_fclose(HANDLE f)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __int64 callback_ftell(HANDLE hFile)
|
||
|
|
{
|
||
|
|
__int64 ret=0;
|
||
|
|
*(DWORD*)&ret = SetFilePointer(hFile,0,((long*)&ret+1),FILE_CURRENT);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void* callbacks[4]=
|
||
|
|
{
|
||
|
|
callback_fread,callback_fseek,callback_fclose,callback_ftell
|
||
|
|
};
|
||
|
|
|
||
|
|
namespace ogg_helper
|
||
|
|
{
|
||
|
|
int num_get_tracks(HANDLE hFile/*track_indexer::callback * out,reader * r*/)
|
||
|
|
{
|
||
|
|
SetFilePointer(hFile,0,0,FILE_BEGIN);
|
||
|
|
OggVorbis_File l_vf;
|
||
|
|
memset(&l_vf,0,sizeof(l_vf));
|
||
|
|
if (ov_open_callbacks(hFile,&l_vf,0,0,*(ov_callbacks*)callbacks))
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
int rv = l_vf.links;
|
||
|
|
ov_clear(&l_vf);
|
||
|
|
return rv;
|
||
|
|
}
|
||
|
|
|
||
|
|
int query_chained_stream_offset(HANDLE hFile,int idx,__int64 * out_beginning,__int64 * out_end)
|
||
|
|
{
|
||
|
|
SetFilePointer(hFile,0,0,FILE_BEGIN);
|
||
|
|
OggVorbis_File l_vf;
|
||
|
|
memset(&l_vf,0,sizeof(l_vf));
|
||
|
|
if (ov_open_callbacks(hFile,&l_vf,0,0,*(ov_callbacks*)callbacks))
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
int retval = 0;
|
||
|
|
if (idx>=0 && idx<l_vf.links)
|
||
|
|
{
|
||
|
|
retval = 1;
|
||
|
|
*out_beginning = l_vf.offsets[idx];
|
||
|
|
*out_end = l_vf.offsets[idx+1];
|
||
|
|
}
|
||
|
|
|
||
|
|
ov_clear(&l_vf);
|
||
|
|
return retval;
|
||
|
|
}
|
||
|
|
}
|