Function cinepak_decode_frame

libavcodec/cinepak.c:450–496

}

static int cinepak_decode_frame(AVCodecContext *avctx, AVFrame *rframe,
                                int *got_frame, AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int ret = 0, buf_size = avpkt->size;
    CinepakContext *s = avctx->priv_data;
    int num_strips;

    s->data = buf;
    s->size = buf_size;

    if (s->size < 10)
        return AVERROR_INVALIDDATA;

    num_strips = AV_RB16 (&s->data[8]);

    //Empty frame, do not waste time
    if (!num_strips && (!s->palette_video || !av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL)))
        return buf_size;

    if ((ret = cinepak_predecode_check(s)) < 0) {
        av_log(avctx, AV_LOG_ERROR, "cinepak_predecode_check failed\n");
        return ret;
    }

    if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
        return ret;

    if (s->palette_video) {
        ff_copy_palette(s->pal, avpkt, avctx);
    }

    if ((ret = cinepak_decode(s)) < 0) {
        av_log(avctx, AV_LOG_ERROR, "cinepak_decode failed\n");
    }

    if (s->palette_video)
        memcpy (s->frame->data[1], s->pal, AVPALETTE_SIZE);

    if ((ret = av_frame_ref(rframe, s->frame)) < 0)
        return ret;

    *got_frame = 1;

    /* report that the buffer was completely consumed */
    return buf_size;
}

static av_cold int cinepak_decode_end(AVCodecContext *avctx)
{