mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-06-29 22:46:07 +02:00
157 lines
3.0 KiB
C++
157 lines
3.0 KiB
C++
/***************************************************************************
|
|
* Copyright (C) 2010
|
|
* by Dimok
|
|
*
|
|
* 3Band resampling thanks to libmad
|
|
*
|
|
* 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 <gccore.h>
|
|
#include <malloc.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "SoundDecoder.hpp"
|
|
#include "main.h"
|
|
|
|
SoundDecoder::SoundDecoder()
|
|
{
|
|
file_fd = NULL;
|
|
Init();
|
|
}
|
|
|
|
SoundDecoder::SoundDecoder(const char * filepath)
|
|
{
|
|
file_fd = new CFile(filepath, "rb");
|
|
Init();
|
|
}
|
|
|
|
SoundDecoder::SoundDecoder(const u8 * buffer, int size)
|
|
{
|
|
file_fd = new CFile(buffer, size);
|
|
Init();
|
|
}
|
|
|
|
SoundDecoder::~SoundDecoder()
|
|
{
|
|
ExitRequested = true;
|
|
while(Decoding)
|
|
usleep(100);
|
|
|
|
if(file_fd)
|
|
delete file_fd;
|
|
file_fd = NULL;
|
|
}
|
|
|
|
void SoundDecoder::Init()
|
|
{
|
|
SoundType = SOUND_RAW;
|
|
SoundBlocks = 8;
|
|
SoundBlockSize = 8192;
|
|
CurPos = 0;
|
|
Loop = false;
|
|
EndOfFile = false;
|
|
Decoding = false;
|
|
ExitRequested = false;
|
|
SoundBuffer.SetBufferBlockSize(SoundBlockSize);
|
|
SoundBuffer.Resize(SoundBlocks);
|
|
}
|
|
|
|
int SoundDecoder::Rewind()
|
|
{
|
|
CurPos = 0;
|
|
EndOfFile = false;
|
|
file_fd->rewind();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int SoundDecoder::Read(u8 * buffer, int buffer_size, int pos)
|
|
{
|
|
int ret = file_fd->read(buffer, buffer_size);
|
|
CurPos += ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void SoundDecoder::Decode()
|
|
{
|
|
if(!file_fd || ExitRequested || EndOfFile)
|
|
return;
|
|
|
|
u16 newWhich = SoundBuffer.Which();
|
|
u16 i = 0;
|
|
for (i = 0; i < SoundBuffer.Size()-2; i++)
|
|
{
|
|
if(!SoundBuffer.IsBufferReady(newWhich))
|
|
break;
|
|
|
|
newWhich = (newWhich+1) % SoundBuffer.Size();
|
|
}
|
|
|
|
if(i == SoundBuffer.Size()-2)
|
|
return;
|
|
|
|
Decoding = true;
|
|
|
|
int done = 0;
|
|
u8 * write_buf = SoundBuffer.GetBuffer(newWhich);
|
|
if(!write_buf)
|
|
{
|
|
ExitRequested = true;
|
|
Decoding = false;
|
|
return;
|
|
}
|
|
|
|
while(done < SoundBlockSize)
|
|
{
|
|
int ret = Read(&write_buf[done], SoundBlockSize-done, Tell());
|
|
|
|
if(ret <= 0)
|
|
{
|
|
if(Loop)
|
|
{
|
|
Rewind();
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
EndOfFile = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
done += ret;
|
|
}
|
|
|
|
if(done > 0)
|
|
{
|
|
SoundBuffer.SetBufferSize(newWhich, done);
|
|
SoundBuffer.SetBufferReady(newWhich, true);
|
|
}
|
|
|
|
if(!SoundBuffer.IsBufferReady((newWhich+1) % SoundBuffer.Size()))
|
|
Decode();
|
|
|
|
Decoding = false;
|
|
}
|
|
|