video.h

linux下实现视频播放的播放器

/*
 *  Copyright (C) 2005-2007  gulikoza
 *
 *  This program 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.
 *
 *  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 General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/* $Id$ */

#ifndef VIDEO_H
#define VIDEO_H

// Number of video frames being buffered
#define FRAMES 24

// 1024 KB decoding buffer
#define BUFFERSIZE 1048576

// Program Association Table entry
struct PAT_entry {
    unsigned int program;
    unsigned int pmtpid;
    unsigned int pcrpid;
    bool first_pmt;
    struct {
	unsigned int pid;
	const char * stream_type;
#define MAX_STREAMS 15
    } streams[MAX_STREAMS];
    unsigned int num_streams;
};

struct Videoinfo {
    // These should be protected by mutex, so no volatile?
    // set to true when info has changed
    bool changed;

    // Source video parameters
    unsigned int w, h;
    unsigned int cropx, cropy;
    double aspect;
    int offset;

    // Video colorspace
    unsigned int colorspace;

    // SDL window
    SDL_semaphore * display_change;
    SDL_Surface * surface;
};

struct SRC_STATE_tag;
struct Audioinfo {
    char mode;
    bool stereo;
    float volume;
    float prevVolume;
    SDL_AudioSpec * spec;

    float * data, * data_out;
    unsigned int r_pos, w_pos, size;
    unsigned int ptsstart;
    double pts;

    // Frequency resample
    SRC_STATE_tag * src_state;
    double ratio;
    int delay;

    // Semaphore for audio change
    SDL_semaphore * audio_change;
};

struct Frame {
    // set this flag to true when video changes size
    bool changed;

    int id;
    unsigned int w, h;

    double time;
    double aspect;
    unsigned int pts;

    unsigned int pitch, edge;
    unsigned char * data[3];

    Frame():changed(true),w(0),h(0),time(0.0),aspect(0.0),pts(0),pitch(0),edge(0) { data[0] = data[1] = data[2] = NULL; }
};

struct Buffer {
    unsigned char * data[3];
    unsigned int height;
    int src_width, dst_width;
};

#ifdef USES_BASECLASS
class Output;

// Uncomment for DEBUG output
//#define DEBUG
#include "log.h"

#include "events.h"

//#define DEBUG
#include "fifo.h"
#include "timer.h"
#include "baseclass.h"

// Filter classes
// Source:
#include "udp.h"
#include "file.h"

// Splitter:
#include "mpeg_demux.h"

// Decoder:
#include "mpeg_audio.h"
#include "mpeg_decoder.h"
#include "libav_decoder.h"
#include "libds_decoder.h"
// End Filter classes

#ifdef DEBUG
#undef DEBUG
#endif

#endif // USES_BASECLASS

#endif // VIDEO_H