Function open_input_file

ffprobe.c:232–268

}

static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
{
    int err, i;
    AVFormatContext *fmt_ctx;

    fmt_ctx = avformat_alloc_context();

    if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {
        print_error(filename, err);
        return err;
    }

    /* fill the streams in the format context */
    if ((err = av_find_stream_info(fmt_ctx)) < 0) {
        print_error(filename, err);
        return err;
    }

    dump_format(fmt_ctx, 0, filename, 0);

    /* bind a decoder to each input stream */
    for (i = 0; i < fmt_ctx->nb_streams; i++) {
        AVStream *stream = fmt_ctx->streams[i];
        AVCodec *codec;

        if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
            fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n",
                    stream->codec->codec_id, stream->index);
        } else if (avcodec_open(stream->codec, codec) < 0) {
            fprintf(stderr, "Error while opening codec for input stream %d\n",
                    stream->index);
        }
    }

    *fmt_ctx_ptr = fmt_ctx;
    return 0;
}

static int probe_file(const char *filename)
{