forked from 0ad/0ad
janwas
f1dac9c626
added some error codes, tried to eliminate unspecific return -1 where it made sense. This was SVN commit r1436.
173 lines
2.8 KiB
C++
Executable File
173 lines
2.8 KiB
C++
Executable File
#include "precompiled.h"
|
|
|
|
#include <string>
|
|
#include <iostream>
|
|
#include <deque>
|
|
#include <algorithm>
|
|
#include <cassert>
|
|
|
|
#include <AL/al.h>
|
|
#include <vorbis/vorbisfile.h>
|
|
|
|
|
|
#include "ogghack.h"
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma comment(lib, "vorbisfile.lib")
|
|
#endif
|
|
|
|
|
|
#define BUFFER_SIZE (4096 * 4)
|
|
|
|
|
|
struct Buf
|
|
{
|
|
void* p;
|
|
size_t size;
|
|
size_t left;
|
|
size_t pos;
|
|
Buf(void* _p, size_t _size)
|
|
{
|
|
p = _p;
|
|
size = _size;
|
|
left = _size;
|
|
pos = 0;
|
|
}
|
|
};
|
|
|
|
typedef std::deque<Buf> IncomingBufs;
|
|
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// OGG CALLBACKS
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
size_t read_func(void* ptr, size_t elements, size_t el_size, void* datasource)
|
|
{
|
|
IncomingBufs* incoming_bufs = (IncomingBufs*)datasource;
|
|
|
|
size_t size = elements*el_size;
|
|
|
|
size_t total_read = 0;
|
|
|
|
while(!incoming_bufs->empty())
|
|
{
|
|
Buf& b = incoming_bufs->front();
|
|
size_t copy_size = std::min(b.left, size);
|
|
|
|
memcpy(ptr, (char*)b.p+b.pos, copy_size);
|
|
total_read += copy_size;
|
|
b.pos += copy_size;
|
|
b.left -= copy_size;
|
|
if(b.left > 0)
|
|
break;
|
|
|
|
free(b.p);
|
|
incoming_bufs->pop_front();
|
|
}
|
|
|
|
return total_read;
|
|
}
|
|
|
|
|
|
int seek_func(void* datasource, ogg_int64_t offset, int whence)
|
|
{
|
|
return -1; // libvorbisfile: indicate "not implemented"
|
|
}
|
|
|
|
int close_func(void* datasource)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
struct Ogg
|
|
{
|
|
OggVorbis_File oggStream;
|
|
vorbis_info* vorbisInfo;
|
|
vorbis_comment* vorbisComment;
|
|
|
|
IncomingBufs incoming_bufs;
|
|
};
|
|
|
|
|
|
void ogg_give_raw(void* _o, void* p, size_t size)
|
|
{
|
|
Ogg* o = (Ogg*)_o;
|
|
IncomingBufs* incoming_bufs = &o->incoming_bufs;
|
|
|
|
void* copy = malloc(size);
|
|
memcpy(copy, p, size);
|
|
incoming_bufs->push_back(Buf(copy, size));
|
|
}
|
|
|
|
|
|
void* ogg_create()
|
|
{
|
|
return new Ogg;
|
|
}
|
|
|
|
|
|
void ogg_open(void* _o, ALenum& fmt, ALsizei& freq)
|
|
{
|
|
Ogg* o = (Ogg*)_o;
|
|
ov_callbacks cbs = { read_func, seek_func, close_func, 0 };
|
|
|
|
void* datasource = &o->incoming_bufs;
|
|
if(ov_open_callbacks(datasource, &o->oggStream, NULL, 0, cbs) < 0)
|
|
{
|
|
assert(!"ov_open failed");
|
|
}
|
|
|
|
o->vorbisInfo = ov_info(&o->oggStream, -1);
|
|
o->vorbisComment = ov_comment(&o->oggStream, -1);
|
|
|
|
if(o->vorbisInfo->channels == 1)
|
|
fmt = AL_FORMAT_MONO16;
|
|
else
|
|
fmt = AL_FORMAT_STEREO16;
|
|
|
|
freq = o->vorbisInfo->rate;
|
|
}
|
|
|
|
|
|
void ogg_release(void* _o)
|
|
{
|
|
Ogg* o = (Ogg*)_o;
|
|
ov_clear(&o->oggStream);
|
|
delete o;
|
|
}
|
|
|
|
|
|
size_t ogg_read(void* _o, void* buf, size_t max_size)
|
|
{
|
|
Ogg* o = (Ogg*)_o;
|
|
size_t bytes_written = 0;
|
|
|
|
while(bytes_written < max_size)
|
|
{
|
|
int section; // unused
|
|
char* pos = (char*)buf + bytes_written;
|
|
size_t left_in_buf = max_size - bytes_written;
|
|
long result = ov_read(&o->oggStream, pos, (int)left_in_buf , 0,2,1, §ion);
|
|
|
|
if(result > 0)
|
|
bytes_written += result;
|
|
else if(result < 0)
|
|
assert(!"ogg read error");
|
|
// clean break - end of data
|
|
else
|
|
break;
|
|
}
|
|
|
|
return bytes_written;
|
|
}
|