FFmpeg: AVOptionRanges Struct Reference

AV_OPT_TYPE_IMAGE_SIZE: component index 0: range of pixel count (width * height). component index 1: range of width. component index 2: range of height.

Note: To obtain multi-component version of this structure, user must provide AV_OPT_MULTI_COMPONENT_RANGE to av_opt_query_ranges or av_opt_query_ranges_default function.

Multi-component range can be read as in following example:

int range_index, component_index;

AVOptionRanges *ranges;

AVOptionRange *range[3]; //may require more than 3 in the future.

av_opt_query_ranges(&ranges, obj, key, AV_OPT_MULTI_COMPONENT_RANGE);

for (range_index = 0; range_index < ranges->nb_ranges; range_index++) {

for (component_index = 0; component_index < ranges->nb_components; component_index++)

range[component_index] = ranges->range[ranges->nb_ranges * component_index + range_index];

//do something with range here.

}

av_opt_freep_ranges(&ranges);

Definition at line 361 of file opt.h.