video: handle video output levels with mp_image_params

Until now, video output levels (obscure feature, like using TV screens
that require RGB output in limited range, similar to YUY) still required
handling of VOCTRL_SET_YUV_COLORSPACE. Simplify this, and use the new
mp_image_params code. This gets rid of some code. VOCTRL_SET_YUV_COLORSPACE
is not needed at all anymore in VOs that use the reconfig callback. The
result of VOCTRL_GET_YUV_COLORSPACE is now used only used for the
colormatrix related properties (basically, for display on OSD).  For
other VOs, VOCTRL_SET_YUV_COLORSPACE will be sent only once after config
instead of twice.

1 files changed, 7 insertions, 0 deletions

diff --git a/video/mp_image.h b/video/mp_image.h
index 7a70ec6a35..ac981533a0 100644
--- a/video/mp_image.h
+++ b/video/mp_image.h
@@ -37,6 +37,9 @@
 #define MP_IMGFIELD_BOTTOM 0x10
 #define MP_IMGFIELD_INTERLACED 0x20
 
+// Describes image parameters that usually stay constant.
+// New fields can be added in the future. Code changing the parameters should
+// usually copy the whole struct, so that fields added later will be preserved.
 struct mp_image_params {
     enum mp_imgfmt imgfmt;      // pixel format
     int w, h;                   // image dimensions
@@ -44,6 +47,10 @@ struct mp_image_params {
     enum mp_csp colorspace;
     enum mp_csp_levels colorlevels;
     enum mp_chroma_location chroma_location;
+    // The image should be converted to these levels. Unlike colorlevels, it
+    // does not describe the current state of the image. (Somewhat similar to
+    // d_w/d_h vs. w/h.)
+    enum mp_csp_levels outputlevels;
 };
 
 /* Memory management: