raw.c

ffmpeg的完整源代码和作者自己写的文档。不但有在Linux的工程哦

    "raw flac",
    0,
    flac_probe,
    flac_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "flac",
};

#ifdef CONFIG_MUXERS
AVOutputFormat flac_muxer = {
    "flac",
    "raw flac",
    "audio/x-flac",
    "flac",
    0,
    CODEC_ID_FLAC,
    0,
    flac_write_header,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

#ifdef CONFIG_AC3_DEMUXER
AVInputFormat ac3_demuxer = {
    "ac3",
    "raw ac3",
    0,
    ac3_probe,
    ac3_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "ac3",
};
#endif

#ifdef CONFIG_MUXERS
AVOutputFormat ac3_muxer = {
    "ac3",
    "raw ac3",
    "audio/x-ac3",
    "ac3",
    0,
    CODEC_ID_AC3,
    0,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat dts_demuxer = {
    "dts",
    "raw dts",
    0,
    NULL,
    dts_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "dts",
};

AVInputFormat aac_demuxer = {
    "aac",
    "ADTS AAC",
    0,
    NULL,
    aac_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "aac",
};

#ifdef CONFIG_ROQ_MUXER
AVOutputFormat roq_muxer =
{
    "RoQ",
    "Id RoQ format",
    NULL,
    "roq",
    0,
    CODEC_ID_ROQ_DPCM,
    CODEC_ID_ROQ,
    roq_write_header,
    raw_write_packet,
};
#endif //CONFIG_ROQ_MUXER

AVInputFormat h261_demuxer = {
    "h261",
    "raw h261",
    0,
    h261_probe,
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "h261",
    .value = CODEC_ID_H261,
};

#ifdef CONFIG_MUXERS
AVOutputFormat h261_muxer = {
    "h261",
    "raw h261",
    "video/x-h261",
    "h261",
    0,
    0,
    CODEC_ID_H261,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat h263_demuxer = {
    "h263",
    "raw h263",
    0,
    h263_probe,
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
    .value = CODEC_ID_H263,
};

#ifdef CONFIG_MUXERS
AVOutputFormat h263_muxer = {
    "h263",
    "raw h263",
    "video/x-h263",
    "h263",
    0,
    0,
    CODEC_ID_H263,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat m4v_demuxer = {
    "m4v",
    "raw MPEG4 video format",
    0,
    mpeg4video_probe, /** probing for mpeg4 data */
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "m4v", //FIXME remove after writing mpeg4_probe
    .value = CODEC_ID_MPEG4,
};

#ifdef CONFIG_MUXERS
AVOutputFormat m4v_muxer = {
    "m4v",
    "raw MPEG4 video format",
    NULL,
    "m4v",
    0,
    CODEC_ID_NONE,
    CODEC_ID_MPEG4,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat h264_demuxer = {
    "h264",
    "raw H264 video format",
    0,
    NULL /*mpegvideo_probe*/,
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
    .value = CODEC_ID_H264,
};

#ifdef CONFIG_MUXERS
AVOutputFormat h264_muxer = {
    "h264",
    "raw H264 video format",
    NULL,
    "h264",
    0,
    CODEC_ID_NONE,
    CODEC_ID_H264,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat mpegvideo_demuxer = {
    "mpegvideo",
    "MPEG video",
    0,
    mpegvideo_probe,
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .value = CODEC_ID_MPEG1VIDEO,
};

#ifdef CONFIG_MUXERS
AVOutputFormat mpeg1video_muxer = {
    "mpeg1video",
    "MPEG video",
    "video/x-mpeg",
    "mpg,mpeg,m1v",
    0,
    0,
    CODEC_ID_MPEG1VIDEO,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

#ifdef CONFIG_MUXERS
AVOutputFormat mpeg2video_muxer = {
    "mpeg2video",
    "MPEG2 video",
    NULL,
    "m2v",
    0,
    0,
    CODEC_ID_MPEG2VIDEO,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat mjpeg_demuxer = {
    "mjpeg",
    "MJPEG video",
    0,
    NULL,
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "mjpg,mjpeg",
    .value = CODEC_ID_MJPEG,
};

AVInputFormat ingenient_demuxer = {
    "ingenient",
    "Ingenient MJPEG",
    0,
    NULL,
    video_read_header,
    ingenient_read_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "cgi", // FIXME
    .value = CODEC_ID_MJPEG,
};

#ifdef CONFIG_MUXERS
AVOutputFormat mjpeg_muxer = {
    "mjpeg",
    "MJPEG video",
    "video/x-mjpeg",
    "mjpg,mjpeg",
    0,
    0,
    CODEC_ID_MJPEG,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

AVInputFormat vc1_demuxer = {
    "vc1",
    "raw vc1",
    0,
    NULL /* vc1_probe */,
    video_read_header,
    raw_read_partial_packet,
    raw_read_close,
    .extensions = "vc1",
    .value = CODEC_ID_VC1,
};

/* pcm formats */

#define PCMINPUTDEF(name, long_name, ext, codec) \
AVInputFormat pcm_ ## name ## _demuxer = {\
    #name,\
    long_name,\
    0,\
    NULL,\
    raw_read_header,\
    raw_read_packet,\
    raw_read_close,\
    pcm_read_seek,\
    .flags= AVFMT_GENERIC_INDEX,\
    .extensions = ext,\
    .value = codec,\
};

#define PCMOUTPUTDEF(name, long_name, ext, codec) \
AVOutputFormat pcm_ ## name ## _muxer = {\
    #name,\
    long_name,\
    NULL,\
    ext,\
    0,\
    codec,\
    0,\
    NULL,\
    raw_write_packet,\
    .flags= AVFMT_NOTIMESTAMPS,\
};


#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
#define PCMDEF(name, long_name, ext, codec) \
        PCMINPUTDEF(name, long_name, ext, codec)
#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
#define PCMDEF(name, long_name, ext, codec) \
        PCMOUTPUTDEF(name, long_name, ext, codec)
#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
#define PCMDEF(name, long_name, ext, codec) \
        PCMINPUTDEF(name, long_name, ext, codec)\
        PCMOUTPUTDEF(name, long_name, ext, codec)
#else
#define PCMDEF(name, long_name, ext, codec)
#endif

#ifdef WORDS_BIGENDIAN
#define BE_DEF(s) s
#define LE_DEF(s) NULL
#else
#define BE_DEF(s) NULL
#define LE_DEF(s) s
#endif


PCMDEF(s16le, "pcm signed 16 bit little endian format",
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)

PCMDEF(s16be, "pcm signed 16 bit big endian format",
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)

PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)

PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)

PCMDEF(s8, "pcm signed 8 bit format",
       "sb", CODEC_ID_PCM_S8)

PCMDEF(u8, "pcm unsigned 8 bit format",
       "ub", CODEC_ID_PCM_U8)

PCMDEF(mulaw, "pcm mu law format",
       "ul", CODEC_ID_PCM_MULAW)

PCMDEF(alaw, "pcm A law format",
       "al", CODEC_ID_PCM_ALAW)

static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
{
    int packet_size, ret, width, height;
    AVStream *st = s->streams[0];

    width = st->codec->width;
    height = st->codec->height;

    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
    if (packet_size < 0)
        return -1;

    ret= av_get_packet(&s->pb, pkt, packet_size);

    pkt->stream_index = 0;
    if (ret != packet_size) {
        return AVERROR(EIO);
    } else {
        return 0;
    }
}

AVInputFormat rawvideo_demuxer = {
    "rawvideo",
    "raw video format",
    0,
    NULL,
    raw_read_header,
    rawvideo_read_packet,
    raw_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "yuv,cif,qcif,rgb",
    .value = CODEC_ID_RAWVIDEO,
};

#ifdef CONFIG_MUXERS
AVOutputFormat rawvideo_muxer = {
    "rawvideo",
    "raw video format",
    NULL,
    "yuv,rgb",
    0,
    CODEC_ID_NONE,
    CODEC_ID_RAWVIDEO,
    NULL,
    raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS

#ifdef CONFIG_MUXERS
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
    return 0;
}

AVOutputFormat null_muxer = {
    "null",
    "null video format",
    NULL,
    NULL,
    0,
#ifdef WORDS_BIGENDIAN
    CODEC_ID_PCM_S16BE,
#else
    CODEC_ID_PCM_S16LE,
#endif
    CODEC_ID_RAWVIDEO,
    NULL,
    null_write_packet,
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
};
#endif //CONFIG_MUXERS