libgui/source/sounds/OggDecoder.cpp
2019-08-14 23:24:55 +02:00

129 lines
3.3 KiB
C++

/***************************************************************************
* Copyright (C) 2010
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* for WiiXplorer 2010
***************************************************************************/
#include <unistd.h>
#include <malloc.h>
#include <coreinit/time.h>
#include <coreinit/thread.h>
#include <gui/sounds/OggDecoder.hpp>
#include "fs/CFile.hpp"
static int ogg_read(void * punt, int bytes, int blocks, int *f) {
return ((CFile *) f)->read((uint8_t *) punt, bytes*blocks);
}
static int ogg_seek(int *f, ogg_int64_t offset, int mode) {
return ((CFile *) f)->seek((uint64_t) offset, mode);
}
static int ogg_close(int *f) {
((CFile *) f)->close();
return 0;
}
static long ogg_tell(int *f) {
return (long) ((CFile *) f)->tell();
}
static ov_callbacks callbacks = {
(size_t (*)(void *, size_t, size_t, void *)) ogg_read,
(int (*)(void *, ogg_int64_t, int)) ogg_seek,
(int (*)(void *)) ogg_close,
(long (*)(void *)) ogg_tell
};
OggDecoder::OggDecoder(const char * filepath)
: SoundDecoder(filepath) {
SoundType = SOUND_OGG;
if(!file_fd)
return;
OpenFile();
}
OggDecoder::OggDecoder(const uint8_t * snd, int32_t len)
: SoundDecoder(snd, len) {
SoundType = SOUND_OGG;
if(!file_fd)
return;
OpenFile();
}
OggDecoder::~OggDecoder() {
ExitRequested = true;
while(Decoding)
OSSleepTicks(OSMicrosecondsToTicks(100));
if(file_fd)
ov_clear(&ogg_file);
}
void OggDecoder::OpenFile() {
if (ov_open_callbacks(file_fd, &ogg_file, NULL, 0, callbacks) < 0) {
delete file_fd;
file_fd = NULL;
return;
}
ogg_info = ov_info(&ogg_file, -1);
if(!ogg_info) {
ov_clear(&ogg_file);
delete file_fd;
file_fd = NULL;
return;
}
Format = ((ogg_info->channels == 2) ? (FORMAT_PCM_16_BIT | CHANNELS_STEREO) : (FORMAT_PCM_16_BIT | CHANNELS_MONO));
SampleRate = ogg_info->rate;
}
int32_t OggDecoder::Rewind() {
if(!file_fd)
return -1;
int32_t ret = ov_time_seek(&ogg_file, 0);
CurPos = 0;
EndOfFile = false;
return ret;
}
int32_t OggDecoder::Read(uint8_t * buffer, int32_t buffer_size, int32_t pos) {
if(!file_fd)
return -1;
int32_t bitstream = 0;
int32_t read = (int32_t) ov_read(&ogg_file, (char *) buffer, (int) buffer_size, (int *)&bitstream);
if(read > 0)
CurPos += read;
return read;
}