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_impl.h"
  16 #include "cc/trees/layer_tree_impl.h"
  17 #include "cc/trees/occlusion.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     media::VideoRotation video_rotation) {
  33   scoped_ptr<VideoLayerImpl> layer(
  34       new VideoLayerImpl(tree_impl, id, video_rotation));
  35   layer->SetProviderClientImpl(VideoFrameProviderClientImpl::Create(provider));
  36   DCHECK(tree_impl->proxy()->IsImplThread());
  37   DCHECK(tree_impl->proxy()->IsMainThreadBlocked());
  38   return layer.Pass();
  39 }
  40
  41 VideoLayerImpl::VideoLayerImpl(LayerTreeImpl* tree_impl,
  42                                int id,
  43                                media::VideoRotation video_rotation)
  44     : LayerImpl(tree_impl, id),
  45       frame_(nullptr),
  46       video_rotation_(video_rotation) {
  47 }
  48
  49 VideoLayerImpl::~VideoLayerImpl() {
  50   if (!provider_client_impl_->Stopped()) {
  51     // In impl side painting, we may have a pending and active layer
  52     // associated with the video provider at the same time. Both have a ref
  53     // on the VideoFrameProviderClientImpl, but we stop when the first
  54     // LayerImpl (the one on the pending tree) is destroyed since we know
  55     // the main thread is blocked for this commit.
  56     DCHECK(layer_tree_impl()->proxy()->IsImplThread());
  57     DCHECK(layer_tree_impl()->proxy()->IsMainThreadBlocked());
  58     provider_client_impl_->Stop();
  59   }
  60 }
  61
  62 scoped_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
  63     LayerTreeImpl* tree_impl) {
  64   return make_scoped_ptr(new VideoLayerImpl(tree_impl, id(), video_rotation_));
  65 }
  66
  67 void VideoLayerImpl::PushPropertiesTo(LayerImpl* layer) {
  68   LayerImpl::PushPropertiesTo(layer);
  69
  70   VideoLayerImpl* other = static_cast<VideoLayerImpl*>(layer);
  71   other->SetProviderClientImpl(provider_client_impl_);
  72 }
  73
  74 void VideoLayerImpl::DidBecomeActive() {
  75   provider_client_impl_->set_active_video_layer(this);
  76 }
  77
  78 bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
  79                               ResourceProvider* resource_provider) {
  80   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
  81     return false;
  82
  83   // Explicitly acquire and release the provider mutex so it can be held from
  84   // WillDraw to DidDraw. Since the compositor thread is in the middle of
  85   // drawing, the layer will not be destroyed before DidDraw is called.
  86   // Therefore, the only thing that will prevent this lock from being released
  87   // is the GPU process locking it. As the GPU process can't cause the
  88   // destruction of the provider (calling StopUsingProvider), holding this
  89   // lock should not cause a deadlock.
  90   frame_ = provider_client_impl_->AcquireLockAndCurrentFrame();
  91
  92   if (!frame_.get()) {
  93     // Drop any resources used by the updater if there is no frame to display.
  94     updater_ = nullptr;
  95
  96     provider_client_impl_->ReleaseLock();
  97     return false;
  98   }
  99
 100   if (!LayerImpl::WillDraw(draw_mode, resource_provider))
 101     return false;
 102
 103   if (!updater_) {
 104     updater_.reset(
 105         new VideoResourceUpdater(layer_tree_impl()->context_provider(),
 106                                  layer_tree_impl()->resource_provider()));
 107   }
 108
 109   VideoFrameExternalResources external_resources =
 110       updater_->CreateExternalResourcesFromVideoFrame(frame_);
 111   frame_resource_type_ = external_resources.type;
 112
 113   if (external_resources.type ==
 114       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 115     software_resources_ = external_resources.software_resources;
 116     software_release_callback_ =
 117         external_resources.software_release_callback;
 118     return true;
 119   }
 120
 121   DCHECK_EQ(external_resources.mailboxes.size(),
 122             external_resources.release_callbacks.size());
 123   for (size_t i = 0; i < external_resources.mailboxes.size(); ++i) {
 124     unsigned resource_id = resource_provider->CreateResourceFromTextureMailbox(
 125         external_resources.mailboxes[i],
 126         SingleReleaseCallbackImpl::Create(
 127             external_resources.release_callbacks[i]));
 128     frame_resources_.push_back(resource_id);
 129   }
 130
 131   return true;
 132 }
 133
 134 void VideoLayerImpl::AppendQuads(RenderPass* render_pass,
 135                                  const Occlusion& occlusion_in_content_space,
 136                                  AppendQuadsData* append_quads_data) {
 137   DCHECK(frame_.get());
 138
 139   gfx::Transform transform = draw_transform();
 140   gfx::Size rotated_size = content_bounds();
 141
 142   switch (video_rotation_) {
 143     case media::VIDEO_ROTATION_90:
 144       rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
 145       transform.Rotate(90.0);
 146       transform.Translate(0.0, -rotated_size.height());
 147       break;
 148     case media::VIDEO_ROTATION_180:
 149       transform.Rotate(180.0);
 150       transform.Translate(-rotated_size.width(), -rotated_size.height());
 151       break;
 152     case media::VIDEO_ROTATION_270:
 153       rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
 154       transform.Rotate(270.0);
 155       transform.Translate(-rotated_size.width(), 0);
 156     case media::VIDEO_ROTATION_0:
 157       break;
 158   }
 159
 160   SharedQuadState* shared_quad_state =
 161       render_pass->CreateAndAppendSharedQuadState();
 162   shared_quad_state->SetAll(transform, rotated_size, visible_content_rect(),
 163                             clip_rect(), is_clipped(), draw_opacity(),
 164                             draw_blend_mode(), sorting_context_id());
 165
 166   AppendDebugBorderQuad(
 167       render_pass, rotated_size, shared_quad_state, append_quads_data);
 168
 169   gfx::Rect quad_rect(rotated_size);
 170   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 171   gfx::Rect visible_rect = frame_->visible_rect();
 172   gfx::Size coded_size = frame_->coded_size();
 173
 174   Occlusion occlusion_in_video_space =
 175       occlusion_in_content_space.GetOcclusionWithGivenDrawTransform(transform);
 176   gfx::Rect visible_quad_rect =
 177       occlusion_in_video_space.GetUnoccludedContentRect(quad_rect);
 178   if (visible_quad_rect.IsEmpty())
 179     return;
 180
 181   // Pixels for macroblocked formats.
 182   const float tex_width_scale =
 183       static_cast<float>(visible_rect.width()) / coded_size.width();
 184   const float tex_height_scale =
 185       static_cast<float>(visible_rect.height()) / coded_size.height();
 186   const float tex_x_offset =
 187       static_cast<float>(visible_rect.x()) / coded_size.width();
 188   const float tex_y_offset =
 189       static_cast<float>(visible_rect.y()) / coded_size.height();
 190
 191   switch (frame_resource_type_) {
 192     // TODO(danakj): Remove this, hide it in the hardware path.
 193     case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
 194       DCHECK_EQ(frame_resources_.size(), 0u);
 195       DCHECK_EQ(software_resources_.size(), 1u);
 196       if (software_resources_.size() < 1u)
 197         break;
 198       bool premultiplied_alpha = true;
 199       gfx::PointF uv_top_left(0.f, 0.f);
 200       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 201       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 202       bool flipped = false;
 203       TextureDrawQuad* texture_quad =
 204           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 205       texture_quad->SetNew(shared_quad_state,
 206                            quad_rect,
 207                            opaque_rect,
 208                            visible_quad_rect,
 209                            software_resources_[0],
 210                            premultiplied_alpha,
 211                            uv_top_left,
 212                            uv_bottom_right,
 213                            SK_ColorTRANSPARENT,
 214                            opacity,
 215                            flipped);
 216       break;
 217     }
 218     case VideoFrameExternalResources::YUV_RESOURCE: {
 219       DCHECK_GE(frame_resources_.size(), 3u);
 220       if (frame_resources_.size() < 3u)
 221         break;
 222       YUVVideoDrawQuad::ColorSpace color_space =
 223           frame_->format() == media::VideoFrame::YV12J
 224               ? YUVVideoDrawQuad::REC_601_JPEG
 225               : YUVVideoDrawQuad::REC_601;
 226       gfx::RectF tex_coord_rect(
 227           tex_x_offset, tex_y_offset, tex_width_scale, tex_height_scale);
 228       YUVVideoDrawQuad* yuv_video_quad =
 229           render_pass->CreateAndAppendDrawQuad<YUVVideoDrawQuad>();
 230       yuv_video_quad->SetNew(
 231           shared_quad_state,
 232           quad_rect,
 233           opaque_rect,
 234           visible_quad_rect,
 235           tex_coord_rect,
 236           frame_resources_[0],
 237           frame_resources_[1],
 238           frame_resources_[2],
 239           frame_resources_.size() > 3 ? frame_resources_[3] : 0,
 240           color_space);
 241       break;
 242     }
 243     case VideoFrameExternalResources::RGB_RESOURCE: {
 244       DCHECK_EQ(frame_resources_.size(), 1u);
 245       if (frame_resources_.size() < 1u)
 246         break;
 247       bool premultiplied_alpha = true;
 248       gfx::PointF uv_top_left(0.f, 0.f);
 249       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 250       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 251       bool flipped = false;
 252       TextureDrawQuad* texture_quad =
 253           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 254       texture_quad->SetNew(shared_quad_state,
 255                            quad_rect,
 256                            opaque_rect,
 257                            visible_quad_rect,
 258                            frame_resources_[0],
 259                            premultiplied_alpha,
 260                            uv_top_left,
 261                            uv_bottom_right,
 262                            SK_ColorTRANSPARENT,
 263                            opacity,
 264                            flipped);
 265       break;
 266     }
 267     case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
 268       DCHECK_EQ(frame_resources_.size(), 1u);
 269       if (frame_resources_.size() < 1u)
 270         break;
 271       gfx::Transform scale;
 272       scale.Scale(tex_width_scale, tex_height_scale);
 273       StreamVideoDrawQuad* stream_video_quad =
 274           render_pass->CreateAndAppendDrawQuad<StreamVideoDrawQuad>();
 275       stream_video_quad->SetNew(
 276           shared_quad_state,
 277           quad_rect,
 278           opaque_rect,
 279           visible_quad_rect,
 280           frame_resources_[0],
 281           scale * provider_client_impl_->stream_texture_matrix());
 282       break;
 283     }
 284     case VideoFrameExternalResources::IO_SURFACE: {
 285       DCHECK_EQ(frame_resources_.size(), 1u);
 286       if (frame_resources_.size() < 1u)
 287         break;
 288       IOSurfaceDrawQuad* io_surface_quad =
 289           render_pass->CreateAndAppendDrawQuad<IOSurfaceDrawQuad>();
 290       io_surface_quad->SetNew(shared_quad_state,
 291                               quad_rect,
 292                               opaque_rect,
 293                               visible_quad_rect,
 294                               visible_rect.size(),
 295                               frame_resources_[0],
 296                               IOSurfaceDrawQuad::UNFLIPPED);
 297       break;
 298     }
 299 #if defined(VIDEO_HOLE)
 300     // This block and other blocks wrapped around #if defined(GOOGLE_TV) is not
 301     // maintained by the general compositor team. Please contact the following
 302     // people instead:
 303     //
 304     // wonsik@chromium.org
 305     // ycheo@chromium.org
 306     case VideoFrameExternalResources::HOLE: {
 307       DCHECK_EQ(frame_resources_.size(), 0u);
 308       SolidColorDrawQuad* solid_color_draw_quad =
 309           render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
 310
 311       // Create a solid color quad with transparent black and force no
 312       // blending / no anti-aliasing.
 313       gfx::Rect opaque_rect = quad_rect;
 314       solid_color_draw_quad->SetAll(shared_quad_state,
 315                                     quad_rect,
 316                                     opaque_rect,
 317                                     visible_quad_rect,
 318                                     false,
 319                                     SK_ColorTRANSPARENT,
 320                                     true);
 321       break;
 322     }
 323 #endif  // defined(VIDEO_HOLE)
 324     case VideoFrameExternalResources::NONE:
 325       NOTIMPLEMENTED();
 326       break;
 327   }
 328 }
 329
 330 void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
 331   LayerImpl::DidDraw(resource_provider);
 332
 333   DCHECK(frame_.get());
 334
 335   if (frame_resource_type_ ==
 336       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 337     for (size_t i = 0; i < software_resources_.size(); ++i) {
 338       software_release_callback_.Run(
 339           0, false, layer_tree_impl()->BlockingMainThreadTaskRunner());
 340     }
 341
 342     software_resources_.clear();
 343     software_release_callback_.Reset();
 344   } else {
 345     for (size_t i = 0; i < frame_resources_.size(); ++i)
 346       resource_provider->DeleteResource(frame_resources_[i]);
 347     frame_resources_.clear();
 348   }
 349
 350   provider_client_impl_->PutCurrentFrame(frame_);
 351   frame_ = nullptr;
 352
 353   provider_client_impl_->ReleaseLock();
 354 }
 355
 356 void VideoLayerImpl::ReleaseResources() {
 357   updater_ = nullptr;
 358 }
 359
 360 void VideoLayerImpl::SetNeedsRedraw() {
 361   SetUpdateRect(gfx::UnionRects(update_rect(), gfx::Rect(bounds())));
 362   layer_tree_impl()->SetNeedsRedraw();
 363 }
 364
 365 void VideoLayerImpl::SetProviderClientImpl(
 366     scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl) {
 367   provider_client_impl_ = provider_client_impl;
 368 }
 369
 370 const char* VideoLayerImpl::LayerTypeAsString() const {
 371   return "cc::VideoLayerImpl";
 372 }
 373
 374 }  // namespace cc