AUD_FFMPEGReader.h

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * Copyright 2009-2011 Jörg Hermann Müller
 *
 * This file is part of AudaSpace.
 *
 * Audaspace 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.
 *
 * AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef AUD_FFMPEGREADER
#define AUD_FFMPEGREADER

#include "AUD_ConverterFunctions.h"
#include "AUD_IReader.h"
#include "AUD_Reference.h"
#include "AUD_Buffer.h"

#include <string>

struct AVCodecContext;
extern "C" {
#include <libavformat/avformat.h>
}

class AUD_FFMPEGReader : public AUD_IReader
{
private:
    int m_position;

    AUD_DeviceSpecs m_specs;

    AUD_Buffer m_pkgbuf;

    int m_pkgbuf_left;

    AVFormatContext* m_formatCtx;

    AVCodecContext* m_codecCtx;

    AVIOContext* m_aviocontext;

    int m_stream;

    AUD_convert_f m_convert;

    AUD_Reference<AUD_Buffer> m_membuffer;

    data_t* m_membuf;

    int64_t m_membufferpos;

    int decode(AVPacket* packet, AUD_Buffer& buffer);

    void init();

    // hide copy constructor and operator=
    AUD_FFMPEGReader(const AUD_FFMPEGReader&);
    AUD_FFMPEGReader& operator=(const AUD_FFMPEGReader&);

public:
    AUD_FFMPEGReader(std::string filename);

    AUD_FFMPEGReader(AUD_Reference<AUD_Buffer> buffer);

    virtual ~AUD_FFMPEGReader();

    static int read_packet(void* opaque, uint8_t* buf, int buf_size);
    static int64_t seek_packet(void* opaque, int64_t offset, int whence);

    virtual bool isSeekable() const;
    virtual void seek(int position);
    virtual int getLength() const;
    virtual int getPosition() const;
    virtual AUD_Specs getSpecs() const;
    virtual void read(int& length, bool& eos, sample_t* buffer);
};

#endif //AUD_FFMPEGREADER