cc: make resource keep video buffer format for hardware overlay.

cc/output/overlay_candidate.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/overlay_candidate.h"
 
 #include <algorithm>
 #include <limits>
 #include "base/logging.h"
 #include "cc/base/math_util.h"
@@ skipping 150 matching lines @@
       break;
     default:
       return gfx::OVERLAY_TRANSFORM_INVALID;
   }
 }
 
 }  // namespace
 
 OverlayCandidate::OverlayCandidate()
     : transform(gfx::OVERLAY_TRANSFORM_NONE),
-      format(RGBA_8888),
+      format(gfx::BufferFormat::RGBA_8888),
       uv_rect(0.f, 0.f, 1.f, 1.f),
       is_clipped(false),
       use_output_surface_for_resource(false),
       resource_id(0),
 #if defined(OS_ANDROID)
       is_backed_by_surface_texture(false),
       is_promotable_hint(false),
 #endif
       plane_z_order(0),
       is_unoccluded(false),
@@ skipping 12 matching lines @@
       quad->shared_quad_state->opacity != 1.f ||
       quad->shared_quad_state->blend_mode != SkBlendMode::kSrcOver)
     return false;
 
   auto& transform = quad->shared_quad_state->quad_to_target_transform;
   candidate->display_rect = gfx::RectF(quad->rect);
   transform.TransformRect(&candidate->display_rect);
   candidate->quad_rect_in_target_space =
       MathUtil::MapEnclosingClippedRect(transform, quad->rect);
 
-  candidate->format = RGBA_8888;
+  candidate->format = gfx::BufferFormat::RGBA_8888;
   candidate->clip_rect = quad->shared_quad_state->clip_rect;
   candidate->is_clipped = quad->shared_quad_state->is_clipped;
 
   switch (quad->material) {
     case DrawQuad::TEXTURE_CONTENT:
       return FromTextureQuad(resource_provider,
                              TextureDrawQuad::MaterialCast(quad), candidate);
     case DrawQuad::STREAM_VIDEO_CONTENT:
       return FromStreamVideoQuad(resource_provider,
                                  StreamVideoDrawQuad::MaterialCast(quad),
@@ skipping 62 matching lines @@
     return false;
   gfx::OverlayTransform overlay_transform = GetOverlayTransform(
       quad->shared_quad_state->quad_to_target_transform, false);
   if (overlay_transform == gfx::OVERLAY_TRANSFORM_INVALID)
     return false;
   if (!quad->matrix.IsScaleOrTranslation()) {
     // We cannot handle anything other than scaling & translation for texture
     // coordinates yet.
     return false;
   }
+  candidate->format = quad->format;

[dshwang, 2017/02/09 00:03:54]

To query this actuall format, all boilerplate plumbing code is added.

   candidate->resource_id = quad->resource_id();
   candidate->resource_size_in_pixels = quad->resource_size_in_pixels();
   candidate->transform = overlay_transform;
 #if defined(OS_ANDROID)
   candidate->is_backed_by_surface_texture =
       resource_provider->IsBackedBySurfaceTexture(quad->resource_id());
 #endif
 
   gfx::Point3F uv0 = gfx::Point3F(0, 0, 0);
   gfx::Point3F uv1 = gfx::Point3F(1, 1, 0);
@@ skipping 37 matching lines @@
 
 OverlayCandidateList& OverlayCandidateList::operator=(
     OverlayCandidateList&& other) = default;
 
 void OverlayCandidateList::AddPromotionHint(const OverlayCandidate& candidate) {
   promotion_hint_info_map_[candidate.resource_id] =
       candidate.display_rect.origin();
 }
 
 }  // namespace cc