int ff_scale_image(uint8_t *dst_data[4], int dst_linesize[4], int dst_w, int dst_h, enum AVPixelFormat dst_pix_fmt, uint8_t * const src_data[4], int src_linesize[4], int src_w, int src_h, enum AVPixelFormat src_pix_fmt, void *log_ctx) { int ret; struct SwsContext *sws_ctx = sws_getContext(src_w, src_h, src_pix_fmt, dst_w, dst_h, dst_pix_fmt, SWS_BILINEAR, NULL, NULL, NULL); if (!sws_ctx) { av_log(log_ctx, AV_LOG_ERROR, "Impossible to create scale context for the conversion " "fmt:%s s:%dx%d -> fmt:%s s:%dx%d\n", av_get_pix_fmt_name(src_pix_fmt), src_w, src_h, av_get_pix_fmt_name(dst_pix_fmt), dst_w, dst_h); ret = AVERROR(EINVAL); goto end; } if ((ret = av_image_alloc(dst_data, dst_linesize, dst_w, dst_h, dst_pix_fmt, 16)) < 0) goto end; ret = 0; sws_scale(sws_ctx, (const uint8_t * const*)src_data, src_linesize, 0, src_h, dst_data, dst_linesize); end: sws_freeContext(sws_ctx); return ret; }