/*
This file is part of MP3DecodeDLL for Symbian.
MP3DecodeDLL for Symbian
Copyright (C) 2004 Denis Mingulov <denis@mingulov.com>
MP3DecodeDLL for Symbian is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
MP3DecodeDLL for Symbian is distributed in the hope that it
will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with MP3DecodeDLL for Symbian; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MP3DECODE_H
#define MP3DECODE_H
#include <e32std.h>
//#include "logfile.h"
#include <f32file.h>
//#include <charconv.h>
#include "mad.h"
//#include <mdaaudiooutputstream.h>
//#include <mda\\common\\audio.h>
//TMdaAudioDataSettings
//#include <stdio.h>
//#include <string.h>
#define MAX_RESAMPLEFACTOR 6
#define MAX_NSAMPLES (1152 * MAX_RESAMPLEFACTOR)
class CMP3Decode : CBase
{
struct resample_state {
mad_fixed_t ratio;
mad_fixed_t step;
mad_fixed_t last;
};
public:
static CMP3Decode *NewL ();
static CMP3Decode *NewLC ();
virtual ~CMP3Decode();
TInt Open(RFs &aFileServer, const TDesC &aFileName); // opens the stream
TInt Close();
TInt SetEqualizer (TInt aEq60, TInt aEq170, TInt aEq310, TInt aEq600, TInt aEq1K, TInt aEq3K, TInt aEq6K, TInt aEq12K, TInt aEq14K, TInt aEq16K, TInt aEqZero, TInt aEqDiv);
TInt SetResampleRate(TInt aResampleRate);
TInt DecodeOneFrame (TDes &aBuffer);
TInt GetFileLength();
TInt GetFilePosition();
protected:
TInt CloseMP3 ();
TInt InitMP3 ();
int DecodeOneFrameLow ();
unsigned int resample_block(struct resample_state *state, unsigned int nsamples, mad_fixed_t const *old, TInt16 *newb);
int resample_init (struct resample_state *state, unsigned int oldrate, unsigned int newrate);
signed int MP3FixedToShort (mad_fixed_t sample);
void ApplyFilter(struct mad_frame *Frame);
// this method fills the buffer and writes it into the stream
// void UpdateBuffer();
// this methoed needs to implemented by YOU
// void FillBuffer(TInt16* buffer, TUint len);
// TInt FillBuffer();
// we will also need these...
protected:
// TInt16* iSoundData; // sound buffer
// TPtr8* iSoundBuf; // descriptor for using our soundbuffer
TBool bFileOpened;
private:
CMP3Decode();
void ConstructL ();
TFileName strFileNameMP3;
RFs *iFileSession;
RFile iFile;
// mp3
struct mad_stream Stream;
struct mad_frame Frame;
struct mad_synth Synth;
mad_timer_t Timer;
int FrameCount;
int Status;
int iFileCurPos;
// int iDecoding;
// int iDecoded;
#define INPUT_BUFFER_SIZE 10000
#define OUTPUT_BUFFER_SIZE 8192
int iOutputBufferCurrent;
int iOutputBufferLength[2];
unsigned char InputBuffer[INPUT_BUFFER_SIZE+MAD_BUFFER_GUARD];
unsigned char InputBuffer2[INPUT_BUFFER_SIZE+MAD_BUFFER_GUARD];
TPtr8 *iInputBuf;
TInt16 OutputBuffer[2][OUTPUT_BUFFER_SIZE];
// TPtr8* iSoundBuf2[2]; // descriptor for using our soundbuffer
mad_fixed_t iEqualizer[32];
TInt iResampleRate;
};
#endif
