RGB_TO_Y_BT709    233 libavfilter/vf_histogram.c         s->envelope_color[0] = RGB_TO_Y_BT709(s->envelope_rgba[0], s->envelope_rgba[1], s->envelope_rgba[2]);
RGB_TO_Y_BT709    113 libavfilter/vf_pad_opencl.c         ctx->pad_color[0] = RGB_TO_Y_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2]);
RGB_TO_Y_BT709    259 libavfilter/vf_remap.c         s->fill_color[0] = RGB_TO_Y_BT709(s->fill_rgba[0], s->fill_rgba[1], s->fill_rgba[2]) * factor;