FFmpegAudioProvider.h

/******************************************************************************
Este arquivo eh parte da implementacao do ambiente declarativo do middleware
Ginga (Ginga-NCL).

Direitos Autorais Reservados (c) 1989-2007 PUC-Rio/Laboratorio TeleMidia

Este programa eh software livre; voce pode redistribui-lo e/ou modificah-lo sob
os termos da Licenca Publica Geral GNU versao 2 conforme publicada pela Free
Software Foundation.

Este programa eh distribuido na expectativa de que seja util, porem, SEM
NENHUMA GARANTIA; nem mesmo a garantia implicita de COMERCIABILIDADE OU
ADEQUACAO A UMA FINALIDADE ESPECIFICA. Consulte a Licenca Publica Geral do
GNU versao 2 para mais detalhes.

Voce deve ter recebido uma copia da Licenca Publica Geral do GNU versao 2 junto
com este programa; se nao, escreva para a Free Software Foundation, Inc., no
endereco 59 Temple Street, Suite 330, Boston, MA 02111-1307 USA.

Para maiores informacoes:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
******************************************************************************
This file is part of the declarative environment of middleware Ginga (Ginga-NCL)

Copyright: 1989-2007 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.

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 version 2 for more
details.

You should have received a copy of the GNU General Public License version 2
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

For further information contact:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
*******************************************************************************/

#ifndef FFmpegAudioProvider_H_
#define FFmpegAudioProvider_H_

#include "config.h"

#include "mb/interface/IContinuousMediaProvider.h"
#include "FusionSoundAudioProvider.h"
using namespace ::br::pucrio::telemidia::ginga::core::mb;

#ifndef INT64_C
#define INT64_C(c) (c ## LL)
#define UINT64_C(c) (c ## ULL)
#endif

#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <time.h>
#include <stdio.h>
#include <unistd.h>

#include <math.h>

#include <pthread.h>

#include <direct/types.h>
#include <direct/list.h>
#include <direct/messages.h>
#include <direct/memcpy.h>
#include <direct/thread.h>
#include <direct/util.h>

#include <dvc/dvc.h>
#include <directfb.h>

#include "fusionsound/fusionsound_limits.h"

#include "libavutil/common.h"
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#ifdef __cplusplus
}
#endif

typedef struct {
    DirectLink       link;
    AVPacket         packet;
} _PacketLink;

typedef struct {
    _PacketLink      *list;
    int              size;
    s64              max_len;
    int              max_size;
    pthread_mutex_t  lock;
} _PacketQueue;

typedef struct {
    DirectLink            link;
    IDirectFBEventBuffer *buffer;
} _EventLink;

typedef struct {
    int                            ref;

    DFBVideoProviderStatus         status;
    DFBVideoProviderPlaybackFlags  flags;
    double                         speed;
    float                          volume;

    IDirectFBDataBuffer           *buffer;
    bool                           seekable;
    void                          *iobuf;

    ByteIOContext                  pb;
    AVFormatContext*               context;

    s64                            start_time;

    struct {
        DirectThread             *thread;
        pthread_mutex_t           lock;

        bool                      buffering;

        bool                      seeked;
        s64                       seek_time;
        int                       seek_flag;
    } input;

    struct {
        DirectThread             *thread;
        pthread_mutex_t           lock;
        pthread_cond_t            cond;

        AVStream                 *st;
        AVCodecContext           *ctx;
        AVCodec                  *codec;

        _PacketQueue               queue;

        s64                       pts;

        bool                      seeked;

        IFusionSound             *sound;
        IFusionSoundStream       *stream;
        IFusionSoundPlayback     *playback;

        int                       sample_size;
        int                       sample_rate;
        int                       buffer_size;
    } audio;

    ISurface*                      surface;
    DVFrameCallback                callback;
    void                          *ctx;

    _EventLink*                    events;
    DFBVideoProviderEventType     events_mask;
    pthread_mutex_t               events_lock;
} IDirectFBAudioProvider_FFmpeg_data;


#define IO_BUFFER_SIZE       8 /* in kylobytes */

#define MAX_QUEUE_LEN        3 /* in seconds */

#define GAP_TOLERANCE    15000 /* in microseconds */

#define GAP_THRESHOLD  250000 /* in microseconds */

/*****************************************************************************/

#include <set>
using namespace std;

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace mb {
    class FFmpegAudioProvider : public IContinuousMediaProvider {
        private:
            IDirectFBAudioProvider_FFmpeg_data* rContainer;
            GingaScreenID myScreen;
            int resumePos;
            int startPos;
            static bool _ffmpegInitialized;
            string symbol;

        public:
            FFmpegAudioProvider(GingaScreenID screenId, const char* mrl);
            virtual ~FFmpegAudioProvider();

        private:
            bool initializeFFmpeg(const char* mrl);

        public:
            void setLoadSymbol(string symbol);
            string getLoadSymbol();

            bool getHasVisual(){return false;};
            void setAVPid(int aPid, int vPid);
            void* getProviderContent();
            void setProviderContent(void* content){};
            void feedBuffers();

        private:
            IDirectFBSurface* getPerfectDFBSurface();

        public:
            bool checkVideoResizeEvent(ISurface* frame);

            void getOriginalResolution(int* width, int* height);
            double getTotalMediaTime();
            int64_t getVPts();
            double getMediaTime();
            void setMediaTime(double pos);

        private:
            bool updateVisualData(ISurface* surface);

        public:
            static void dynamicRenderCallBack(void* surface);
            void playOver(
                    ISurface* surface,
                    bool hasVisual=true, IProviderListener* listener=NULL);

            void resume(ISurface* surface, bool hasVisual=true);
            void pause();
            void stop();
            void setSoundLevel(float level);
            bool releaseAll();
            void refreshDR(void* data){};
    };
}
}
}
}
}
}

#endif /*FFmpegAudioProvider_H_*/