video/out: remove unused colorspace reporting

Rarely used and essentially useless. The only VO for which this was
implemented correctly and for which this did anything was vo_xv, but you
shouldn't use vo_xv anyway (plus it support BT.601 only, plus a vendor
specific extension for BT.709, whose presence this function essentially
reported - use xvinfo instead).

video/out/vo.h

@@ -94,11 +94,6 @@ enum mp_voctrl {
     // names for displays the window is on
     VOCTRL_GET_DISPLAY_NAMES,
 
-    // The VO is supposed to set  "known" fields, and leave the others
-    // untouched or set to 0.
-    // imgfmt/w/h/d_w/d_h can be omitted for convenience.
-    VOCTRL_GET_COLORSPACE,              // struct mp_image_params*
-
     // Retrieve window contents. (Normal screenshots use vo_get_current_frame().)
     VOCTRL_SCREENSHOT_WIN,              // struct mp_image**
 

video/out/vo_direct3d.c

@@ -1263,15 +1263,6 @@ static int control(struct vo *vo, uint32_t request, void *data)
     case VOCTRL_REDRAW_FRAME:
         d3d_draw_frame(priv);
         return VO_TRUE;
-    case VOCTRL_GET_COLORSPACE: {
-        struct mp_image_params *p = data;
-        if (priv->use_shaders) { // no idea what the heck D3D YUV uses
-            p->colorspace = priv->params.colorspace;
-            p->colorlevels = priv->params.colorlevels;
-            p->outputlevels = priv->params.outputlevels;
-        }
-        return VO_TRUE;
-    }
     case VOCTRL_SET_EQUALIZER: {
         if (!priv->use_shaders)
             break;

video/out/vo_lavc.c

@@ -54,8 +54,6 @@ struct priv {
     AVRational worst_time_base;
     int worst_time_base_is_stream;
 
-    struct mp_image_params real_colorspace;
-
     bool shutdown;
 };
 
@@ -167,11 +165,6 @@ static int reconfig(struct vo *vo, struct mp_image_params *params, int flags)
     if (encode_lavc_open_codec(vo->encode_lavc_ctx, vc->stream) < 0)
         goto error;
 
-    vc->real_colorspace.colorspace =
-        encode_lavc_get_csp(vo->encode_lavc_ctx, vc->stream);
-    vc->real_colorspace.colorlevels =
-        encode_lavc_get_csp_levels(vo->encode_lavc_ctx, vc->stream);
-
     vc->buffer_size = 6 * width * height + 200;
     if (vc->buffer_size < FF_MIN_BUFFER_SIZE)
         vc->buffer_size = FF_MIN_BUFFER_SIZE;
@@ -516,17 +509,7 @@ static void flip_page(struct vo *vo)
 
 static int control(struct vo *vo, uint32_t request, void *data)
 {
-    struct priv *vc = vo->priv;
-    int r = VO_NOTIMPL;
-    pthread_mutex_lock(&vo->encode_lavc_ctx->lock);
-    switch (request) {
-    case VOCTRL_GET_COLORSPACE:
-        *(struct mp_image_params *)data = vc->real_colorspace;
-        r = 1;
-        break;
-    }
-    pthread_mutex_unlock(&vo->encode_lavc_ctx->lock);
-    return r;
+    return VO_NOTIMPL;
 }
 
 const struct vo_driver video_out_lavc = {

video/out/vo_opengl.c

@@ -366,11 +366,6 @@ static int control(struct vo *vo, uint32_t request, void *data)
             vo->want_redraw = true;
         return r ? VO_TRUE : VO_NOTIMPL;
     }
-    case VOCTRL_GET_COLORSPACE:
-        mpgl_lock(p->glctx);
-        gl_video_get_colorspace(p->renderer, data);
-        mpgl_unlock(p->glctx);
-        return VO_TRUE;
     case VOCTRL_SCREENSHOT_WIN:
         mpgl_lock(p->glctx);
         *(struct mp_image **)data = glGetWindowScreenshot(p->gl);

video/out/vo_vaapi.c

@@ -540,12 +540,6 @@ static int control(struct vo *vo, uint32_t request, void *data)
         *arg = &p->hwdec_info;
         return true;
     }
-    case VOCTRL_GET_COLORSPACE: {
-        struct mp_image_params *params = data;
-        if (va_get_colorspace_flag(p->image_params.colorspace))
-            params->colorspace = p->image_params.colorspace;
-        return true;
-    }
     case VOCTRL_SET_EQUALIZER: {
         struct voctrl_set_equalizer_args *eq = data;
         return set_equalizer(p, eq->name, eq->value);

video/out/vo_vdpau.c

@@ -1014,15 +1014,6 @@ static int control(struct vo *vo, uint32_t request, void *data)
         struct voctrl_get_equalizer_args *args = data;
         return get_equalizer(vo, args->name, args->valueptr);
     }
-    case VOCTRL_GET_COLORSPACE: {
-        struct mp_image_params *params = data;
-        if (vo->params && !vc->rgb_mode) {
-            params->colorspace = vo->params->colorspace;
-            params->colorlevels = vo->params->colorlevels;
-            params->outputlevels = vo->params->outputlevels;
-        }
-        return true;
-    }
     case VOCTRL_REDRAW_FRAME:
         if (status_ok(vo))
             video_to_output_surface(vo);

video/out/vo_xv.c

@@ -821,12 +821,6 @@ static int control(struct vo *vo, uint32_t request, void *data)
         struct voctrl_get_equalizer_args *args = data;
         return xv_get_eq(vo, ctx->xv_port, args->name, args->valueptr);
     }
-    case VOCTRL_GET_COLORSPACE: {
-        struct mp_image_params *params = data;
-        read_xv_csp(vo);
-        params->colorspace = ctx->cached_csp;
-        return true;
-    }
     case VOCTRL_REDRAW_FRAME:
         draw_image(vo, ctx->original_image);
         return true;