cc/layers/video_layer_impl.cc

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/layers/video_layer_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "cc/layers/video_frame_provider_client_impl.h"
  10 #include "cc/quads/io_surface_draw_quad.h"
  11 #include "cc/quads/stream_video_draw_quad.h"
  12 #include "cc/quads/texture_draw_quad.h"
  13 #include "cc/quads/yuv_video_draw_quad.h"
  14 #include "cc/resources/resource_provider.h"
  15 #include "cc/resources/single_release_callback.h"
  16 #include "cc/trees/layer_tree_impl.h"
  17 #include "cc/trees/occlusion_tracker.h"
  18 #include "cc/trees/proxy.h"
  19 #include "media/base/video_frame.h"
  20
  21 #if defined(VIDEO_HOLE)
  22 #include "cc/quads/solid_color_draw_quad.h"
  23 #endif  // defined(VIDEO_HOLE)
  24
  25 namespace cc {
  26
  27 // static
  28 scoped_ptr<VideoLayerImpl> VideoLayerImpl::Create(
  29     LayerTreeImpl* tree_impl,
  30     int id,
  31     VideoFrameProvider* provider) {
  32   scoped_ptr<VideoLayerImpl> layer(new VideoLayerImpl(tree_impl, id));
  33   layer->SetProviderClientImpl(VideoFrameProviderClientImpl::Create(provider));
  34   DCHECK(tree_impl->proxy()->IsImplThread());
  35   DCHECK(tree_impl->proxy()->IsMainThreadBlocked());
  36   return layer.Pass();
  37 }
  38
  39 VideoLayerImpl::VideoLayerImpl(LayerTreeImpl* tree_impl, int id)
  40     : LayerImpl(tree_impl, id),
  41       frame_(NULL) {}
  42
  43 VideoLayerImpl::~VideoLayerImpl() {
  44   if (!provider_client_impl_->Stopped()) {
  45     // In impl side painting, we may have a pending and active layer
  46     // associated with the video provider at the same time. Both have a ref
  47     // on the VideoFrameProviderClientImpl, but we stop when the first
  48     // LayerImpl (the one on the pending tree) is destroyed since we know
  49     // the main thread is blocked for this commit.
  50     DCHECK(layer_tree_impl()->proxy()->IsImplThread());
  51     DCHECK(layer_tree_impl()->proxy()->IsMainThreadBlocked());
  52     provider_client_impl_->Stop();
  53   }
  54 }
  55
  56 scoped_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
  57     LayerTreeImpl* tree_impl) {
  58   return scoped_ptr<LayerImpl>(new VideoLayerImpl(tree_impl, id()));
  59 }
  60
  61 void VideoLayerImpl::PushPropertiesTo(LayerImpl* layer) {
  62   LayerImpl::PushPropertiesTo(layer);
  63
  64   VideoLayerImpl* other = static_cast<VideoLayerImpl*>(layer);
  65   other->SetProviderClientImpl(provider_client_impl_);
  66 }
  67
  68 void VideoLayerImpl::DidBecomeActive() {
  69   provider_client_impl_->set_active_video_layer(this);
  70 }
  71
  72 bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
  73                               ResourceProvider* resource_provider) {
  74   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
  75     return false;
  76
  77   // Explicitly acquire and release the provider mutex so it can be held from
  78   // WillDraw to DidDraw. Since the compositor thread is in the middle of
  79   // drawing, the layer will not be destroyed before DidDraw is called.
  80   // Therefore, the only thing that will prevent this lock from being released
  81   // is the GPU process locking it. As the GPU process can't cause the
  82   // destruction of the provider (calling StopUsingProvider), holding this
  83   // lock should not cause a deadlock.
  84   frame_ = provider_client_impl_->AcquireLockAndCurrentFrame();
  85
  86   if (!frame_.get()) {
  87     // Drop any resources used by the updater if there is no frame to display.
  88     updater_.reset();
  89
  90     provider_client_impl_->ReleaseLock();
  91     return false;
  92   }
  93
  94   if (!LayerImpl::WillDraw(draw_mode, resource_provider))
  95     return false;
  96
  97   if (!updater_) {
  98     updater_.reset(
  99         new VideoResourceUpdater(layer_tree_impl()->context_provider(),
 100                                  layer_tree_impl()->resource_provider()));
 101   }
 102
 103   VideoFrameExternalResources external_resources =
 104       updater_->CreateExternalResourcesFromVideoFrame(frame_);
 105   frame_resource_type_ = external_resources.type;
 106
 107   if (external_resources.type ==
 108       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 109     software_resources_ = external_resources.software_resources;
 110     software_release_callback_ =
 111         external_resources.software_release_callback;
 112     return true;
 113   }
 114
 115   DCHECK_EQ(external_resources.mailboxes.size(),
 116             external_resources.release_callbacks.size());
 117   for (size_t i = 0; i < external_resources.mailboxes.size(); ++i) {
 118     unsigned resource_id = resource_provider->CreateResourceFromTextureMailbox(
 119         external_resources.mailboxes[i],
 120         SingleReleaseCallback::Create(external_resources.release_callbacks[i]));
 121     frame_resources_.push_back(resource_id);
 122   }
 123
 124   return true;
 125 }
 126
 127 void VideoLayerImpl::AppendQuads(
 128     RenderPass* render_pass,
 129     const OcclusionTracker<LayerImpl>& occlusion_tracker,
 130     AppendQuadsData* append_quads_data) {
 131   DCHECK(frame_.get());
 132
 133   SharedQuadState* shared_quad_state =
 134       render_pass->CreateAndAppendSharedQuadState();
 135   PopulateSharedQuadState(shared_quad_state);
 136
 137   AppendDebugBorderQuad(
 138       render_pass, content_bounds(), shared_quad_state, append_quads_data);
 139
 140   gfx::Rect quad_rect(content_bounds());
 141   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 142   gfx::Rect visible_rect = frame_->visible_rect();
 143   gfx::Size coded_size = frame_->coded_size();
 144
 145   gfx::Rect visible_quad_rect = occlusion_tracker.UnoccludedContentRect(
 146       quad_rect, draw_properties().target_space_transform);
 147   if (visible_quad_rect.IsEmpty())
 148     return;
 149
 150   // Pixels for macroblocked formats.
 151   const float tex_width_scale =
 152       static_cast<float>(visible_rect.width()) / coded_size.width();
 153   const float tex_height_scale =
 154       static_cast<float>(visible_rect.height()) / coded_size.height();
 155   const float tex_x_offset =
 156       static_cast<float>(visible_rect.x()) / coded_size.width();
 157   const float tex_y_offset =
 158       static_cast<float>(visible_rect.y()) / coded_size.height();
 159
 160   switch (frame_resource_type_) {
 161     // TODO(danakj): Remove this, hide it in the hardware path.
 162     case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
 163       DCHECK_EQ(frame_resources_.size(), 0u);
 164       DCHECK_EQ(software_resources_.size(), 1u);
 165       if (software_resources_.size() < 1u)
 166         break;
 167       bool premultiplied_alpha = true;
 168       gfx::PointF uv_top_left(0.f, 0.f);
 169       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 170       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 171       bool flipped = false;
 172       TextureDrawQuad* texture_quad =
 173           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 174       texture_quad->SetNew(shared_quad_state,
 175                            quad_rect,
 176                            opaque_rect,
 177                            visible_quad_rect,
 178                            software_resources_[0],
 179                            premultiplied_alpha,
 180                            uv_top_left,
 181                            uv_bottom_right,
 182                            SK_ColorTRANSPARENT,
 183                            opacity,
 184                            flipped);
 185       break;
 186     }
 187     case VideoFrameExternalResources::YUV_RESOURCE: {
 188       DCHECK_GE(frame_resources_.size(), 3u);
 189       if (frame_resources_.size() < 3u)
 190         break;
 191       YUVVideoDrawQuad::ColorSpace color_space =
 192           frame_->format() == media::VideoFrame::YV12J
 193               ? YUVVideoDrawQuad::REC_601_JPEG
 194               : YUVVideoDrawQuad::REC_601;
 195       gfx::RectF tex_coord_rect(
 196           tex_x_offset, tex_y_offset, tex_width_scale, tex_height_scale);
 197       YUVVideoDrawQuad* yuv_video_quad =
 198           render_pass->CreateAndAppendDrawQuad<YUVVideoDrawQuad>();
 199       yuv_video_quad->SetNew(
 200           shared_quad_state,
 201           quad_rect,
 202           opaque_rect,
 203           visible_quad_rect,
 204           tex_coord_rect,
 205           frame_resources_[0],
 206           frame_resources_[1],
 207           frame_resources_[2],
 208           frame_resources_.size() > 3 ? frame_resources_[3] : 0,
 209           color_space);
 210       break;
 211     }
 212     case VideoFrameExternalResources::RGB_RESOURCE: {
 213       DCHECK_EQ(frame_resources_.size(), 1u);
 214       if (frame_resources_.size() < 1u)
 215         break;
 216       bool premultiplied_alpha = true;
 217       gfx::PointF uv_top_left(0.f, 0.f);
 218       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 219       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 220       bool flipped = false;
 221       TextureDrawQuad* texture_quad =
 222           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 223       texture_quad->SetNew(shared_quad_state,
 224                            quad_rect,
 225                            opaque_rect,
 226                            visible_quad_rect,
 227                            frame_resources_[0],
 228                            premultiplied_alpha,
 229                            uv_top_left,
 230                            uv_bottom_right,
 231                            SK_ColorTRANSPARENT,
 232                            opacity,
 233                            flipped);
 234       break;
 235     }
 236     case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
 237       DCHECK_EQ(frame_resources_.size(), 1u);
 238       if (frame_resources_.size() < 1u)
 239         break;
 240       gfx::Transform scale;
 241       scale.Scale(tex_width_scale, tex_height_scale);
 242       StreamVideoDrawQuad* stream_video_quad =
 243           render_pass->CreateAndAppendDrawQuad<StreamVideoDrawQuad>();
 244       stream_video_quad->SetNew(
 245           shared_quad_state,
 246           quad_rect,
 247           opaque_rect,
 248           visible_quad_rect,
 249           frame_resources_[0],
 250           scale * provider_client_impl_->stream_texture_matrix());
 251       break;
 252     }
 253     case VideoFrameExternalResources::IO_SURFACE: {
 254       DCHECK_EQ(frame_resources_.size(), 1u);
 255       if (frame_resources_.size() < 1u)
 256         break;
 257       IOSurfaceDrawQuad* io_surface_quad =
 258           render_pass->CreateAndAppendDrawQuad<IOSurfaceDrawQuad>();
 259       io_surface_quad->SetNew(shared_quad_state,
 260                               quad_rect,
 261                               opaque_rect,
 262                               visible_quad_rect,
 263                               visible_rect.size(),
 264                               frame_resources_[0],
 265                               IOSurfaceDrawQuad::UNFLIPPED);
 266       break;
 267     }
 268 #if defined(VIDEO_HOLE)
 269     // This block and other blocks wrapped around #if defined(GOOGLE_TV) is not
 270     // maintained by the general compositor team. Please contact the following
 271     // people instead:
 272     //
 273     // wonsik@chromium.org
 274     // ycheo@chromium.org
 275     case VideoFrameExternalResources::HOLE: {
 276       DCHECK_EQ(frame_resources_.size(), 0u);
 277       SolidColorDrawQuad* solid_color_draw_quad =
 278           render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
 279
 280       // Create a solid color quad with transparent black and force no
 281       // blending / no anti-aliasing.
 282       gfx::Rect opaque_rect = quad_rect;
 283       solid_color_draw_quad->SetAll(shared_quad_state,
 284                                     quad_rect,
 285                                     opaque_rect,
 286                                     visible_quad_rect,
 287                                     false,
 288                                     SK_ColorTRANSPARENT,
 289                                     true);
 290       break;
 291     }
 292 #endif  // defined(VIDEO_HOLE)
 293     case VideoFrameExternalResources::NONE:
 294       NOTIMPLEMENTED();
 295       break;
 296   }
 297 }
 298
 299 void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
 300   LayerImpl::DidDraw(resource_provider);
 301
 302   DCHECK(frame_.get());
 303
 304   if (frame_resource_type_ ==
 305       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 306     for (size_t i = 0; i < software_resources_.size(); ++i)
 307       software_release_callback_.Run(0, false);
 308
 309     software_resources_.clear();
 310     software_release_callback_.Reset();
 311   } else {
 312     for (size_t i = 0; i < frame_resources_.size(); ++i)
 313       resource_provider->DeleteResource(frame_resources_[i]);
 314     frame_resources_.clear();
 315   }
 316
 317   provider_client_impl_->PutCurrentFrame(frame_);
 318   frame_ = NULL;
 319
 320   provider_client_impl_->ReleaseLock();
 321 }
 322
 323 void VideoLayerImpl::ReleaseResources() {
 324   updater_.reset();
 325 }
 326
 327 void VideoLayerImpl::SetNeedsRedraw() {
 328   SetUpdateRect(gfx::UnionRects(update_rect(), gfx::RectF(bounds())));
 329   layer_tree_impl()->SetNeedsRedraw();
 330 }
 331
 332 void VideoLayerImpl::SetProviderClientImpl(
 333     scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl) {
 334   provider_client_impl_ = provider_client_impl;
 335 }
 336
 337 const char* VideoLayerImpl::LayerTypeAsString() const {
 338   return "cc::VideoLayerImpl";
 339 }
 340
 341 }  // namespace cc