| // Copyright 2015 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_strategy_common.h" |
| |
| #include <limits> |
| |
| #include "cc/quads/solid_color_draw_quad.h" |
| #include "cc/quads/stream_video_draw_quad.h" |
| #include "cc/quads/texture_draw_quad.h" |
| #include "cc/resources/resource_provider.h" |
| #include "ui/gfx/geometry/point3_f.h" |
| #include "ui/gfx/geometry/rect_conversions.h" |
| #include "ui/gfx/transform.h" |
| |
| namespace cc { |
| |
| OverlayStrategyCommon::OverlayStrategyCommon( |
| OverlayCandidateValidator* capability_checker, |
| ResourceProvider* resource_provider) |
| : capability_checker_(capability_checker), |
| resource_provider_(resource_provider) { |
| } |
| |
| OverlayStrategyCommon::~OverlayStrategyCommon() { |
| } |
| |
| bool OverlayStrategyCommon::IsOverlayQuad(const DrawQuad* draw_quad) { |
| unsigned int resource_id; |
| switch (draw_quad->material) { |
| case DrawQuad::TEXTURE_CONTENT: |
| resource_id = TextureDrawQuad::MaterialCast(draw_quad)->resource_id(); |
| break; |
| case DrawQuad::STREAM_VIDEO_CONTENT: |
| resource_id = StreamVideoDrawQuad::MaterialCast(draw_quad)->resource_id(); |
| break; |
| default: |
| return false; |
| } |
| return resource_provider_->AllowOverlay(resource_id); |
| } |
| |
| bool OverlayStrategyCommon::IsInvisibleQuad(const DrawQuad* draw_quad) { |
| if (draw_quad->material == DrawQuad::SOLID_COLOR) { |
| const SolidColorDrawQuad* solid_quad = |
| SolidColorDrawQuad::MaterialCast(draw_quad); |
| SkColor color = solid_quad->color; |
| float opacity = solid_quad->shared_quad_state->opacity; |
| float alpha = (SkColorGetA(color) * (1.0f / 255.0f)) * opacity; |
| return solid_quad->ShouldDrawWithBlending() && |
| alpha < std::numeric_limits<float>::epsilon(); |
| } |
| return false; |
| } |
| |
| bool OverlayStrategyCommon::GetTextureQuadInfo(const TextureDrawQuad& quad, |
| OverlayCandidate* quad_info) { |
| gfx::OverlayTransform overlay_transform = |
| OverlayCandidate::GetOverlayTransform( |
| quad.shared_quad_state->content_to_target_transform, quad.y_flipped); |
| if (quad.background_color != SK_ColorTRANSPARENT || |
| quad.premultiplied_alpha || |
| overlay_transform == gfx::OVERLAY_TRANSFORM_INVALID) |
| return false; |
| quad_info->resource_id = quad.resource_id(); |
| quad_info->transform = overlay_transform; |
| quad_info->uv_rect = BoundingRect(quad.uv_top_left, quad.uv_bottom_right); |
| return true; |
| } |
| |
| bool OverlayStrategyCommon::GetVideoQuadInfo(const StreamVideoDrawQuad& quad, |
| OverlayCandidate* quad_info) { |
| gfx::OverlayTransform overlay_transform = |
| OverlayCandidate::GetOverlayTransform( |
| quad.shared_quad_state->content_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; |
| } |
| quad_info->resource_id = quad.resource_id(); |
| quad_info->transform = overlay_transform; |
| |
| gfx::Point3F uv0 = gfx::Point3F(0, 0, 0); |
| gfx::Point3F uv1 = gfx::Point3F(1, 1, 0); |
| quad.matrix.TransformPoint(&uv0); |
| quad.matrix.TransformPoint(&uv1); |
| gfx::Vector3dF delta = uv1 - uv0; |
| if (delta.x() < 0) { |
| quad_info->transform = OverlayCandidate::ModifyTransform( |
| quad_info->transform, gfx::OVERLAY_TRANSFORM_FLIP_HORIZONTAL); |
| float x0 = uv0.x(); |
| uv0.set_x(uv1.x()); |
| uv1.set_x(x0); |
| delta.set_x(-delta.x()); |
| } |
| |
| if (delta.y() < 0) { |
| // In this situation, uv0y < uv1y. Since we overlay inverted, a request |
| // to invert the source texture means we can just output the texture |
| // normally and it will be correct. |
| quad_info->uv_rect = gfx::RectF(uv0.x(), uv1.y(), delta.x(), -delta.y()); |
| } else { |
| quad_info->transform = OverlayCandidate::ModifyTransform( |
| quad_info->transform, gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL); |
| quad_info->uv_rect = gfx::RectF(uv0.x(), uv0.y(), delta.x(), delta.y()); |
| } |
| return true; |
| } |
| |
| bool OverlayStrategyCommon::GetCandidateQuadInfo(const DrawQuad& draw_quad, |
| OverlayCandidate* quad_info) { |
| // All quad checks. |
| if (draw_quad.needs_blending || draw_quad.shared_quad_state->opacity != 1.f || |
| draw_quad.shared_quad_state->blend_mode != SkXfermode::kSrcOver_Mode) |
| return false; |
| |
| if (draw_quad.material == DrawQuad::TEXTURE_CONTENT) { |
| const TextureDrawQuad& quad = *TextureDrawQuad::MaterialCast(&draw_quad); |
| if (!GetTextureQuadInfo(quad, quad_info)) |
| return false; |
| } else if (draw_quad.material == DrawQuad::STREAM_VIDEO_CONTENT) { |
| const StreamVideoDrawQuad& quad = |
| *StreamVideoDrawQuad::MaterialCast(&draw_quad); |
| if (!GetVideoQuadInfo(quad, quad_info)) |
| return false; |
| } |
| |
| quad_info->format = RGBA_8888; |
| quad_info->display_rect = OverlayCandidate::GetOverlayRect( |
| draw_quad.shared_quad_state->content_to_target_transform, draw_quad.rect); |
| return true; |
| } |
| |
| } // namespace cc |