int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation) { if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1; *inv_table = c->srcColorspaceTable; *table = c->dstColorspaceTable; *srcRange = c->srcRange; *dstRange = c->dstRange; *brightness= c->brightness; *contrast = c->contrast; *saturation= c->saturation; return 0; }