Function update_thread_context

libavcodec/cfhd.c:1414–1455

#if HAVE_THREADS
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
{
    CFHDContext *psrc = src->priv_data;
    CFHDContext *pdst = dst->priv_data;
    int ret;

    if (dst == src || psrc->transform_type == 0)
        return 0;

    if (pdst->plane[0].idwt_size != psrc->plane[0].idwt_size ||
        pdst->a_format != psrc->a_format ||
        pdst->a_width != psrc->a_width ||
        pdst->a_height != psrc->a_height ||
        pdst->a_transform_type != psrc->a_transform_type)
        free_buffers(pdst);

    pdst->a_format = psrc->a_format;
    pdst->a_width  = psrc->a_width;
    pdst->a_height = psrc->a_height;
    pdst->a_transform_type = psrc->a_transform_type;
    pdst->transform_type = psrc->transform_type;
    pdst->progressive = psrc->progressive;
    pdst->planes = psrc->planes;

    if (!pdst->plane[0].idwt_buf) {
        pdst->coded_width  = pdst->a_width;
        pdst->coded_height = pdst->a_height;
        pdst->coded_format = pdst->a_format;
        pdst->transform_type = pdst->a_transform_type;
        ret = alloc_buffers(dst);
        if (ret < 0)
            return ret;
    }

    for (int plane = 0; plane < pdst->planes; plane++) {
        memcpy(pdst->plane[plane].band, psrc->plane[plane].band, sizeof(pdst->plane[plane].band));
        memcpy(pdst->plane[plane].idwt_buf, psrc->plane[plane].idwt_buf,
               pdst->plane[plane].idwt_size * sizeof(int16_t));
    }

    return 0;
}
#endif

const FFCodec ff_cfhd_decoder = {