Fix the wrong mapping between chroma-format and subsampling_x/y in av1 and vp9 parse.

added 1 commit

54ab94d3 - av1parse: Fix some issues in the src caps.

@seungha.yang, I am still a little confused why the color space need to check here? Other parse such as h265 parse seems that it always sends the chroma-format info.

580   if (self->color_space != GST_VP9_CS_SRGB) {
581     if (self->parser->subsampling_x == 1 && self->parser->subsampling_y == 1)
582       chroma_format = "4:2:0";
583     else if (self->parser->subsampling_x == 1 &&
584         self->parser->subsampling_y == 0)
585       chroma_format = "4:2:2";
586     else if (self->parser->subsampling_x == 0 &&
587         self->parser->subsampling_y == 1)
588       chroma_format = "4:4:0";
589     else if (self->parser->subsampling_x == 0 &&
590         self->parser->subsampling_y == 0)
591       chroma_format = "4:4:4";
592 
593     if (chroma_format)
594       gst_caps_set_simple (final_caps,
595           "chroma-format", G_TYPE_STRING, chroma_format, NULL);
596   }