ijkmedia 思维导图模板_ProcessOn思维导图、流程图

libavcodec/avcodec.h AVPacket

<div>typedef struct AVPacket {</div><div>    AVBufferRef *buf;</div><div>    int64_t pts;</div><div>    int64_t dts;</div><div>    uint8_t *data;</div><div>    int   size;</div><div>    int   stream_index;</div><div>    int   flags;</div><div>    AVPacketSideData *side_data;</div><div>    int side_data_elems;</div><div>    int64_t duration;</div><div><br></div><div>    int64_t pos;</div><div>#if FF_API_CONVERGENCE_DURATION</div><div>    attribute_deprecated</div><div>    int64_t convergence_duration;</div><div>#endif</div><div>} AVPacket;</div>

libavformat/utils.c av_read_frame

static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)

int ff_read_packet(AVFormatContext *s, AVPacket *pkt)

<div> av_init_packet(pkt);</div><div> ret = s->iformat->read_packet(s, pkt);</div>

parse_packet

libavcodec/parser.c av_parser_parse2

s->parser->parser_parse

libavformat/avformat.h AVFormatContext

    struct AVInputFormat *iformat;

libavformat\options.c avformat_alloc_context

libavformat/utils.c avformat_open_input

init_input

libavformat/format.c av_probe_input_buffer2

av_probe_input_format2

av_probe_input_format3

av_iformat_next

<div>AVInputFormat ff_flv_demuxer = {</div><div>    .name           = "flv",</div><div>    .long_name      = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),</div><div>    .priv_data_size = sizeof(FLVContext),</div><div>    .read_probe     = flv_probe,</div><div>    .read_header    = flv_read_header,</div><div>    .read_packet    = flv_read_packet,</div><div>    .read_seek      = flv_read_seek,</div><div>    .read_close     = flv_read_close,</div><div>    .extensions     = "flv",</div><div>    .priv_class     = &flv_class,</div><div>};</div><div><br></div>

libavformat/allformats.c av_register_all

REGISTER_DEMUXER (AAC,              aac);

libavformat/aacdec.c

<div>AVInputFormat ff_aac_demuxer = {</div><div>    .name         = "aac",</div><div>    .long_name    = NULL_IF_CONFIG_SMALL("raw ADTS AAC (Advanced Audio Coding)"),</div><div>    .read_probe   = adts_aac_probe,</div><div>    .read_header  = adts_aac_read_header,</div><div>    .read_packet  = ff_raw_read_partial_packet,</div><div>    .flags        = AVFMT_GENERIC_INDEX,</div><div>    .extensions   = "aac",</div><div>    .mime_type    = "audio/aac,audio/aacp,audio/x-aac",</div><div>    .raw_codec_id = AV_CODEC_ID_AAC,</div><div>};</div>

REGISTER_MUXDEMUX(H264,             h264);

libavformat/h264dec.c 

FF_DEF_RAWVIDEO_DEMUXER(h264, "raw H.264 video", h264_probe, "h26l,h264,264,avc", AV_CODEC_ID_H264)

libavformat/rawdec.h

<div>AVInputFormat ff_ ## shortname ## _demuxer = {\</div><div>    .name           = #shortname,\</div><div>    .long_name      = NULL_IF_CONFIG_SMALL(longname),\</div><div>    .read_probe     = probe,\</div><div>    .read_header    = ff_raw_video_read_header,\</div><div>    .read_packet    = ff_raw_read_partial_packet,\</div><div>    .extensions     = ext,\</div><div>    .flags          = flag,\</div><div>    .raw_codec_id   = id,\</div><div>    .priv_data_size = sizeof(FFRawVideoDemuxerContext),\</div><div>    .priv_class     = &shortname ## _demuxer_class,\</div><div>};</div>

<div>unsigned int nb_streams; </div><div>AVStream **streams;</div>

libavformat/utils.c avformat_open_input

s->iformat->read_header(s)

libavformat/aacdec.c adts_aac_read_header

libavformat\utils.c

avformat_new_stream

libavformat/avformat.h AVStream

    struct AVCodecParserContext *parser;

libavformat/utils.c avformat_find_stream_info

libavcodec/parser.c av_parser_init

libavcodec/allcodecs.c avcodec_register_all

REGISTER_ENCDEC (AAC,               aac);

aac_parser.c

<div>AVCodecParser ff_aac_parser = {</div><div>    .codec_ids      = { AV_CODEC_ID_AAC },</div><div>    .priv_data_size = sizeof(AACAC3ParseContext),</div><div>    .parser_init    = aac_parse_init,</div><div>    .parser_parse   = ff_aac_ac3_parse,</div><div>    .parser_close   = ff_parse_close,</div><div>};</div>

REGISTER_PARSER(H264,               h264);

libavcodec/h264_parser.c

<div>AVCodecParser ff_h264_parser = {</div><div>    .codec_ids      = { AV_CODEC_ID_H264 },</div><div>    .priv_data_size = sizeof(H264ParseContext),</div><div>    .parser_init    = init,</div><div>    .parser_parse   = h264_parse,</div><div>    .parser_close   = h264_close,</div><div>    .split          = h264_split,</div><div>};</div>

<div>int (*io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url,</div><div>     int flags, AVDictionary **options);</div><div>void (*io_close)(struct AVFormatContext *s, AVIOContext *pb);</div>

libavformat/utils.c avformat_open_input

libavformat/options.c avformat_alloc_context

<div>avformat_get_context_defaults   </div><div>s->av_class = &av_format_context_class;</div><div>s->io_open  = io_open_default;</div><div>s->io_close = io_close_default;</div>

<div>static int io_open_default(AVFormatContext *s, AVIOContext **pb,</div><div>                           const char *url, int flags, AVDictionary **options)</div>

libavformat/aviobuf.c ffio_open_whitelist

libavformat\avio.c ffurl_open_whitelist

<div>int ffurl_alloc(URLContext **puc, const char *filename, int flags,</div><div>                const AVIOInterruptCB *int_cb)</div>

static const struct URLProtocol *url_find_protocol(const char *filename)

libavformat/protocols.c ffurl_get_protocols

libavformat/url.h URLProtocol

libavformat/rtmpproto.c

<div>const URLProtocol ff_##flavor##_protocol = {     \</div><div>    .name           = #flavor,                   \</div><div>    .url_open       = rtmp_open,                 \</div><div>    .url_read       = rtmp_read,                 \</div><div>    .url_read_seek  = rtmp_seek,                 \</div><div>    .url_read_pause = rtmp_pause,                \</div><div>    .url_write      = rtmp_write,                \</div><div>    .url_close      = rtmp_close,                \</div><div>    .priv_data_size = sizeof(RTMPContext),       \</div><div>    .flags          = URL_PROTOCOL_FLAG_NETWORK, \</div><div>    .priv_data_class= &flavor##_class,           \</div><div>};</div>

libavformat/protocol_list.c

<div>static const URLProtocol *url_protocols[] = {</div><div>    &ff_async_protocol,</div><div>    &ff_crypto_protocol,</div><div>    &ff_file_protocol,</div><div>    &ff_hls_protocol,</div><div>    &ff_http_protocol,</div><div>    &ff_rtmp_protocol,</div><div>    &ff_tcp_protocol,</div><div>    NULL };</div><div><br></div>

int ffurl_connect(URLContext *uc, AVDictionary **options)