/* figure out which stages need to be done */
if (in_width != out_width || in_height != out_height ||
- in_deinterleaved_format != out_deinterleaved_format)
+ in_deinterleaved_format != out_deinterleaved_format) {
s->stages[STAGE_RESIZE].stage_needed = 1;
+ if (s->interp_algo == NPPI_INTER_SUPER &&
+ (out_width > in_width && out_height > in_height)) {
+ s->interp_algo = NPPI_INTER_LANCZOS;
+ av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using lanczos instead.\n");
+ }
+ if (s->interp_algo == NPPI_INTER_SUPER &&
+ !(out_width < in_width && out_height < in_height)) {
+ s->interp_algo = NPPI_INTER_CUBIC;
+ av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using cubic instead.\n");
+ }
+ }
+
if (!s->stages[STAGE_RESIZE].stage_needed && in_format == out_format)
s->passthrough = 1;