video_layer_impl.cc revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace 
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/quad_sink.h"
10#include "cc/layers/video_frame_provider_client_impl.h"
11#include "cc/quads/io_surface_draw_quad.h"
12#include "cc/quads/stream_video_draw_quad.h"
13#include "cc/quads/texture_draw_quad.h"
14#include "cc/quads/yuv_video_draw_quad.h"
15#include "cc/resources/resource_provider.h"
16#include "cc/trees/layer_tree_impl.h"
17#include "cc/trees/proxy.h"
18#include "media/base/video_frame.h"
19
20#if defined(GOOGLE_TV)
21#include "cc/quads/solid_color_draw_quad.h"
22#endif
23
24namespace cc {
25
26// static
27scoped_ptr<VideoLayerImpl> VideoLayerImpl::Create(
28    LayerTreeImpl* tree_impl,
29    int id,
30    VideoFrameProvider* provider) {
31  scoped_ptr<VideoLayerImpl> layer(new VideoLayerImpl(tree_impl, id));
32  layer->SetProviderClientImpl(VideoFrameProviderClientImpl::Create(provider));
33  DCHECK(tree_impl->proxy()->IsImplThread());
34  DCHECK(tree_impl->proxy()->IsMainThreadBlocked());
35  return layer.Pass();
36}
37
38VideoLayerImpl::VideoLayerImpl(LayerTreeImpl* tree_impl, int id)
39    : LayerImpl(tree_impl, id),
40      frame_(NULL) {}
41
42VideoLayerImpl::~VideoLayerImpl() {
43  if (!provider_client_impl_->Stopped()) {
44    // In impl side painting, we may have a pending and active layer
45    // associated with the video provider at the same time. Both have a ref
46    // on the VideoFrameProviderClientImpl, but we stop when the first
47    // LayerImpl (the one on the pending tree) is destroyed since we know
48    // the main thread is blocked for this commit.
49    DCHECK(layer_tree_impl()->proxy()->IsImplThread());
50    DCHECK(layer_tree_impl()->proxy()->IsMainThreadBlocked());
51    provider_client_impl_->Stop();
52  }
53}
54
55scoped_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
56    LayerTreeImpl* tree_impl) {
57  return scoped_ptr<LayerImpl>(new VideoLayerImpl(tree_impl, id()));
58}
59
60void VideoLayerImpl::PushPropertiesTo(LayerImpl* layer) {
61  LayerImpl::PushPropertiesTo(layer);
62
63  VideoLayerImpl* other = static_cast<VideoLayerImpl*>(layer);
64  other->SetProviderClientImpl(provider_client_impl_);
65}
66
67void VideoLayerImpl::DidBecomeActive() {
68  provider_client_impl_->set_active_video_layer(this);
69}
70
71bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
72                              ResourceProvider* resource_provider) {
73  if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
74    return false;
75
76  // Explicitly acquire and release the provider mutex so it can be held from
77  // WillDraw to DidDraw. Since the compositor thread is in the middle of
78  // drawing, the layer will not be destroyed before DidDraw is called.
79  // Therefore, the only thing that will prevent this lock from being released
80  // is the GPU process locking it. As the GPU process can't cause the
81  // destruction of the provider (calling StopUsingProvider), holding this
82  // lock should not cause a deadlock.
83  frame_ = provider_client_impl_->AcquireLockAndCurrentFrame();
84
85  if (!frame_.get()) {
86    // Drop any resources used by the updater if there is no frame to display.
87    updater_.reset();
88
89    provider_client_impl_->ReleaseLock();
90    return false;
91  }
92
93  if (!LayerImpl::WillDraw(draw_mode, resource_provider))
94    return false;
95
96  if (!updater_)
97    updater_.reset(new VideoResourceUpdater(resource_provider));
98
99  VideoFrameExternalResources external_resources =
100      updater_->CreateExternalResourcesFromVideoFrame(frame_);
101  frame_resource_type_ = external_resources.type;
102
103  if (external_resources.type ==
104      VideoFrameExternalResources::SOFTWARE_RESOURCE) {
105    software_resources_ = external_resources.software_resources;
106    software_release_callback_ =
107        external_resources.software_release_callback;
108    return true;
109  }
110
111  for (size_t i = 0; i < external_resources.mailboxes.size(); ++i) {
112    frame_resources_.push_back(
113        resource_provider->CreateResourceFromTextureMailbox(
114            external_resources.mailboxes[i]));
115  }
116
117  return true;
118}
119
120void VideoLayerImpl::AppendQuads(QuadSink* quad_sink,
121                                 AppendQuadsData* append_quads_data) {
122  DCHECK(frame_.get());
123
124  SharedQuadState* shared_quad_state =
125      quad_sink->UseSharedQuadState(CreateSharedQuadState());
126  AppendDebugBorderQuad(quad_sink, shared_quad_state, append_quads_data);
127
128  gfx::Rect quad_rect(content_bounds());
129  gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
130  gfx::Rect visible_rect = frame_->visible_rect();
131  gfx::Size coded_size = frame_->coded_size();
132
133  // Pixels for macroblocked formats.
134  float tex_width_scale =
135      static_cast<float>(visible_rect.width()) / coded_size.width();
136  float tex_height_scale =
137      static_cast<float>(visible_rect.height()) / coded_size.height();
138
139  switch (frame_resource_type_) {
140    // TODO(danakj): Remove this, hide it in the hardware path.
141    case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
142      DCHECK_EQ(frame_resources_.size(), 0u);
143      DCHECK_EQ(software_resources_.size(), 1u);
144      if (software_resources_.size() < 1u)
145        break;
146      bool premultiplied_alpha = true;
147      gfx::PointF uv_top_left(0.f, 0.f);
148      gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
149      float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
150      bool flipped = false;
151      scoped_ptr<TextureDrawQuad> texture_quad = TextureDrawQuad::Create();
152      texture_quad->SetNew(shared_quad_state,
153                           quad_rect,
154                           opaque_rect,
155                           software_resources_[0],
156                           premultiplied_alpha,
157                           uv_top_left,
158                           uv_bottom_right,
159                           opacity,
160                           flipped);
161      quad_sink->Append(texture_quad.PassAs<DrawQuad>(), append_quads_data);
162      break;
163    }
164    case VideoFrameExternalResources::YUV_RESOURCE: {
165      DCHECK_GE(frame_resources_.size(), 3u);
166      if (frame_resources_.size() < 3u)
167        break;
168      gfx::SizeF tex_scale(tex_width_scale, tex_height_scale);
169      scoped_ptr<YUVVideoDrawQuad> yuv_video_quad = YUVVideoDrawQuad::Create();
170      yuv_video_quad->SetNew(shared_quad_state,
171                             quad_rect,
172                             opaque_rect,
173                             tex_scale,
174                             frame_resources_[0],
175                             frame_resources_[1],
176                             frame_resources_[2],
177                             frame_resources_.size() > 3 ?
178                                 frame_resources_[3] : 0);
179      quad_sink->Append(yuv_video_quad.PassAs<DrawQuad>(), append_quads_data);
180      break;
181    }
182    case VideoFrameExternalResources::RGB_RESOURCE: {
183      DCHECK_EQ(frame_resources_.size(), 1u);
184      if (frame_resources_.size() < 1u)
185        break;
186      bool premultiplied_alpha = true;
187      gfx::PointF uv_top_left(0.f, 0.f);
188      gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
189      float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
190      bool flipped = false;
191      scoped_ptr<TextureDrawQuad> texture_quad = TextureDrawQuad::Create();
192      texture_quad->SetNew(shared_quad_state,
193                           quad_rect,
194                           opaque_rect,
195                           frame_resources_[0],
196                           premultiplied_alpha,
197                           uv_top_left,
198                           uv_bottom_right,
199                           opacity,
200                           flipped);
201      quad_sink->Append(texture_quad.PassAs<DrawQuad>(), append_quads_data);
202      break;
203    }
204    case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
205      DCHECK_EQ(frame_resources_.size(), 1u);
206      if (frame_resources_.size() < 1u)
207        break;
208      gfx::Transform transform(
209          provider_client_impl_->stream_texture_matrix());
210      transform.Scale(tex_width_scale, tex_height_scale);
211      scoped_ptr<StreamVideoDrawQuad> stream_video_quad =
212          StreamVideoDrawQuad::Create();
213      stream_video_quad->SetNew(shared_quad_state,
214                                quad_rect,
215                                opaque_rect,
216                                frame_resources_[0],
217                                transform);
218      quad_sink->Append(stream_video_quad.PassAs<DrawQuad>(),
219                        append_quads_data);
220      break;
221    }
222    case VideoFrameExternalResources::IO_SURFACE: {
223      DCHECK_EQ(frame_resources_.size(), 1u);
224      if (frame_resources_.size() < 1u)
225        break;
226      gfx::Size visible_size(visible_rect.width(), visible_rect.height());
227      scoped_ptr<IOSurfaceDrawQuad> io_surface_quad =
228          IOSurfaceDrawQuad::Create();
229      io_surface_quad->SetNew(shared_quad_state,
230                              quad_rect,
231                              opaque_rect,
232                              visible_size,
233                              frame_resources_[0],
234                              IOSurfaceDrawQuad::UNFLIPPED);
235      quad_sink->Append(io_surface_quad.PassAs<DrawQuad>(),
236                        append_quads_data);
237      break;
238    }
239#if defined(GOOGLE_TV)
240    // This block and other blocks wrapped around #if defined(GOOGLE_TV) is not
241    // maintained by the general compositor team. Please contact the following
242    // people instead:
243    //
244    // wonsik@chromium.org
245    // ycheo@chromium.org
246    case VideoFrameExternalResources::HOLE: {
247      DCHECK_EQ(frame_resources_.size(), 0u);
248      scoped_ptr<SolidColorDrawQuad> solid_color_draw_quad =
249          SolidColorDrawQuad::Create();
250
251      // Create a solid color quad with transparent black and force no
252      // blending / no anti-aliasing.
253      solid_color_draw_quad->SetAll(
254          shared_quad_state, quad_rect, quad_rect, quad_rect, false,
255          SK_ColorTRANSPARENT, true);
256      quad_sink->Append(solid_color_draw_quad.PassAs<DrawQuad>(),
257                        append_quads_data);
258      break;
259    }
260#endif
261    case VideoFrameExternalResources::NONE:
262      NOTIMPLEMENTED();
263      break;
264  }
265}
266
267void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
268  LayerImpl::DidDraw(resource_provider);
269
270  DCHECK(frame_.get());
271
272  if (frame_resource_type_ ==
273      VideoFrameExternalResources::SOFTWARE_RESOURCE) {
274    for (size_t i = 0; i < software_resources_.size(); ++i)
275      software_release_callback_.Run(0, false);
276
277    software_resources_.clear();
278    software_release_callback_.Reset();
279  } else {
280    for (size_t i = 0; i < frame_resources_.size(); ++i)
281      resource_provider->DeleteResource(frame_resources_[i]);
282    frame_resources_.clear();
283  }
284
285  provider_client_impl_->PutCurrentFrame(frame_);
286  frame_ = NULL;
287
288  provider_client_impl_->ReleaseLock();
289}
290
291void VideoLayerImpl::DidLoseOutputSurface() {
292  updater_.reset();
293}
294
295void VideoLayerImpl::SetNeedsRedraw() {
296  set_update_rect(gfx::UnionRects(update_rect(), gfx::RectF(bounds())));
297  layer_tree_impl()->SetNeedsRedraw();
298}
299
300void VideoLayerImpl::SetProviderClientImpl(
301    scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl) {
302  provider_client_impl_ = provider_client_impl;
303}
304
305const char* VideoLayerImpl::LayerTypeAsString() const {
306  return "cc::VideoLayerImpl";
307}
308
309}  // namespace cc
310