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/*
* dxr3audiodecoder.h
*
* Copyright (C) 2002-2004 Kai Möller
* Copyright (C) 2004 Christian Gmeiner
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _DXR3_AUDIODECODER_H_
#define _DXR3_AUDIODECODER_H_
#include <stdlib.h>
#include <stdint.h>
#include "dxr3ffmpeg.h"
#include "dxr3syncbuffer.h"
#include "dxr3multichannelaudio.h"
#include "dxr3log.h"
// ==================================
//! Decode given audiostream in usable audioformat
/*!
Here we can decode lpcm, ac3 and pcm to useable
bitstream for ffmpeg. ffmpeg will convert
the datastream into mp2.
*/
class cDxr3AudioDecoder
{
public:
cDxr3AudioDecoder();
~cDxr3AudioDecoder();
void Init();
void Decode(const uint8_t* buf, int length, uint32_t pts, cDxr3SyncBuffer &aBuf);
void DecodeLpcm(const uint8_t* buf, int length, uint32_t pts, cDxr3SyncBuffer &aBuf);
void DecodeAc3Dts(const uint8_t* pPes, const uint8_t* buf, int length, uint32_t pts, cDxr3SyncBuffer &aBuf);
int GetRate() const { return m_Rate; }
int GetChannelCount() const { return m_Channels; }
int GetFrameSize() const { return m_FrameSize; }
void Reset() { m_AC3dtsDecoder.Clear(); m_RBuf.Clear(); }
private:
bool HeadCheck(unsigned long head);
struct Dxr3Codec m_Codec;
cRingBufferFrame m_RBuf;
cMultichannelAudio m_AC3dtsDecoder;
bool m_AudioSynched;
bool m_DecoderOpened;
uint8_t m_LastHeader[4];
int m_Rate;
int m_Channels;
uint32_t m_FrameSize;
uint8_t m_PcmBuf[AVCODEC_MAX_AUDIO_FRAME_SIZE];
int m_Volume;
bool m_FoundHeader;
bool m_DecodeAudio;
cDxr3AudioDecoder(cDxr3AudioDecoder&); // no copy constructor
};
#endif /*_DXR3_AUDIODECODER_H_*/
// Local variables:
// mode: c++
// c-file-style: "stroustrup"
// c-file-offsets: ((inline-open . 0))
// indent-tabs-mode: t
// End:
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