Function av_parser_init

libavcodec/parser.c:36–91

#if FF_API_PARSER_CODECID
av_cold AVCodecParserContext *av_parser_init(int codec_id)
#else
av_cold AVCodecParserContext *av_parser_init(enum AVCodecID codec_id)
#endif
{
    AVCodecParserContext *s = NULL;
    const AVCodecParser *parser;
    const FFCodecParser *ffparser;
    void *i = 0;
    int ret;

    if (codec_id == AV_CODEC_ID_NONE)
        return NULL;

    while ((parser = av_parser_iterate(&i))) {
        if (parser->codec_ids[0] == codec_id ||
            parser->codec_ids[1] == codec_id ||
            parser->codec_ids[2] == codec_id ||
            parser->codec_ids[3] == codec_id ||
            parser->codec_ids[4] == codec_id ||
            parser->codec_ids[5] == codec_id ||
            parser->codec_ids[6] == codec_id)
            goto found;
    }
    return NULL;

found:
    ffparser = ffcodecparser(parser);
    s = av_mallocz(sizeof(AVCodecParserContext));
    if (!s)
        goto err_out;
    s->parser = parser;
    s->priv_data = av_mallocz(ffparser->priv_data_size);
    if (!s->priv_data)
        goto err_out;
    s->fetch_timestamp=1;
    s->pict_type = AV_PICTURE_TYPE_I;
    if (ffparser->init) {
        ret = ffparser->init(s);
        if (ret != 0)
            goto err_out;
    }
    s->key_frame            = -1;
    s->dts_sync_point       = INT_MIN;
    s->dts_ref_dts_delta    = INT_MIN;
    s->pts_dts_delta        = INT_MIN;
    s->format               = -1;

    return s;

err_out:
    if (s)
        av_freep(&s->priv_data);
    av_free(s);
    return NULL;
}

void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove, int fuzzy)