hwc: Support for windowboxing feature on external
1. This feature is targeted to remove any window/pillar boxing on
external display when zoom mode is enabled.
2. Preserve the aspect ratio of the external display by cropping and
upscaling the tagged video layer during video playback on external.
3. User can tag the layers to be displayed on external display.
4. Set sys.hwc.windowbox_feature to true to enable this feature
Assumptions & Limitation:
1. Tagged layers for external display will also be displayed on
primary display along with untagged layers
2. When zoom in mode is enabled, source crop left and source crop
top of a tagged video layer is always assumed to be set to
positive integer value. So pinch zoom feature or zooming in top
left corner of the video use case cannot be supported.
3. Except tagged video layers, all other tagged UI layers will
use GPU for composition on external display, So all tagged UI
layers cannot be secure layer.
4. Rotation animation cannot be supported for this feature.
Change-Id: I8b934cf616ec23b4359d0120f9a291178a2781c6
diff --git a/libhwcomposer/hwc_mdpcomp.h b/libhwcomposer/hwc_mdpcomp.h
index 3ed9186..5b47984 100644
--- a/libhwcomposer/hwc_mdpcomp.h
+++ b/libhwcomposer/hwc_mdpcomp.h
@@ -75,6 +75,7 @@
MDPCOMP_AVOID_LOAD_MDP = 0x004,
MDPCOMP_AVOID_VIDEO_ONLY = 0x008,
MDPCOMP_AVOID_MDP_ONLY_LAYERS = 0x010,
+ MDPCOMP_AVOID_AIV_VIDEO_MODE = 0x020,
};
/* mdp pipe data */
@@ -187,6 +188,8 @@
bool loadBasedComp(hwc_context_t *ctx, hwc_display_contents_1_t* list);
/* Checks if its worth doing load based partial comp */
bool isLoadBasedCompDoable(hwc_context_t *ctx);
+ /* checks for conditions where AIV layers cannot be bypassed */
+ bool tryAIVVideoMode(hwc_context_t *ctx, hwc_display_contents_1_t* list);
/* checks for conditions where only video can be bypassed */
bool tryVideoOnly(hwc_context_t *ctx, hwc_display_contents_1_t* list);
bool videoOnlyComp(hwc_context_t *ctx, hwc_display_contents_1_t* list,
@@ -222,6 +225,9 @@
bool intersectingUpdatingLayers(const hwc_display_contents_1_t* list,
int fromIndex, int toIndex, int targetLayerIndex);
+ /* Mark AIV layers for composition and drop other non-AIV layers.*/
+ void updateAIVLayers(hwc_context_t* ctx, hwc_display_contents_1_t* list);
+
/* updates cache map with YUV info */
void updateYUV(hwc_context_t* ctx, hwc_display_contents_1_t* list,
bool secureOnly, FrameInfo& frame);