Function opus_parse

libavcodec/opus/parser.c:170–215

}

static int opus_parse(AVCodecParserContext *ctx, AVCodecContext *avctx,
                       const uint8_t **poutbuf, int *poutbuf_size,
                       const uint8_t *buf, int buf_size)
{
    OpusParserContext *s = ctx->priv_data;
    ParseContext *pc    = &s->pc;
    int next, header_len = 0;

    avctx->sample_rate = 48000;

    if (avctx->extradata && !s->extradata_parsed) {
        if (ff_opus_parse_extradata(avctx, &s->ctx) < 0) {
            av_log(avctx, AV_LOG_ERROR, "Error parsing Ogg extradata.\n");
            goto fail;
        }
        av_freep(&s->ctx.channel_maps);
        s->extradata_parsed = 1;
    }

    if (ctx->flags & PARSER_FLAG_COMPLETE_FRAMES) {
        next = buf_size;

        if (buf_size && set_frame_duration(ctx, avctx, buf, buf_size) < 0)
            goto fail;
    } else {
        next = opus_find_frame_end(ctx, avctx, buf, buf_size, &header_len);

        if (s->ts_framing && next != AVERROR_INVALIDDATA &&
            ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
            goto fail;
        }

        if (next == AVERROR_INVALIDDATA){
            goto fail;
        }
    }

    *poutbuf      = buf + header_len;
    *poutbuf_size = buf_size - header_len;
    return next;

fail:
    *poutbuf      = NULL;
    *poutbuf_size = 0;
    return buf_size;
}

const FFCodecParser ff_opus_parser = {
    PARSER_CODEC_LIST(AV_CODEC_ID_OPUS),