video_layer_impl.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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/resources/single_release_callback.h"
17#include "cc/trees/layer_tree_impl.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
25namespace cc {
26
27// static
28scoped_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
39VideoLayerImpl::VideoLayerImpl(LayerTreeImpl* tree_impl, int id)
40    : LayerImpl(tree_impl, id),
41      frame_(NULL) {}
42
43VideoLayerImpl::~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
56scoped_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
57    LayerTreeImpl* tree_impl) {
58  return scoped_ptr<LayerImpl>(new VideoLayerImpl(tree_impl, id()));
59}
60
61void VideoLayerImpl::PushPropertiesTo(LayerImpl* layer) {
62  LayerImpl::PushPropertiesTo(layer);
63
64  VideoLayerImpl* other = static_cast<VideoLayerImpl*>(layer);
65  other->SetProviderClientImpl(provider_client_impl_);
66}
67
68void VideoLayerImpl::DidBecomeActive() {
69  provider_client_impl_->set_active_video_layer(this);
70}
71
72bool 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
127void VideoLayerImpl::AppendQuads(QuadSink* quad_sink,
128                                 AppendQuadsData* append_quads_data) {
129  DCHECK(frame_.get());
130
131  SharedQuadState* shared_quad_state =
132      quad_sink->UseSharedQuadState(CreateSharedQuadState());
133  AppendDebugBorderQuad(quad_sink, shared_quad_state, append_quads_data);
134
135  gfx::Rect quad_rect(content_bounds());
136  gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
137  gfx::Rect visible_rect = frame_->visible_rect();
138  gfx::Size coded_size = frame_->coded_size();
139
140  // Pixels for macroblocked formats.
141  float tex_width_scale =
142      static_cast<float>(visible_rect.width()) / coded_size.width();
143  float tex_height_scale =
144      static_cast<float>(visible_rect.height()) / coded_size.height();
145
146  switch (frame_resource_type_) {
147    // TODO(danakj): Remove this, hide it in the hardware path.
148    case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
149      DCHECK_EQ(frame_resources_.size(), 0u);
150      DCHECK_EQ(software_resources_.size(), 1u);
151      if (software_resources_.size() < 1u)
152        break;
153      bool premultiplied_alpha = true;
154      gfx::PointF uv_top_left(0.f, 0.f);
155      gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
156      float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
157      bool flipped = false;
158      scoped_ptr<TextureDrawQuad> texture_quad = TextureDrawQuad::Create();
159      texture_quad->SetNew(shared_quad_state,
160                           quad_rect,
161                           opaque_rect,
162                           software_resources_[0],
163                           premultiplied_alpha,
164                           uv_top_left,
165                           uv_bottom_right,
166                           SK_ColorTRANSPARENT,
167                           opacity,
168                           flipped);
169      quad_sink->Append(texture_quad.PassAs<DrawQuad>(), append_quads_data);
170      break;
171    }
172    case VideoFrameExternalResources::YUV_RESOURCE: {
173      DCHECK_GE(frame_resources_.size(), 3u);
174      if (frame_resources_.size() < 3u)
175        break;
176      gfx::SizeF tex_scale(tex_width_scale, tex_height_scale);
177      scoped_ptr<YUVVideoDrawQuad> yuv_video_quad = YUVVideoDrawQuad::Create();
178      yuv_video_quad->SetNew(shared_quad_state,
179                             quad_rect,
180                             opaque_rect,
181                             tex_scale,
182                             frame_resources_[0],
183                             frame_resources_[1],
184                             frame_resources_[2],
185                             frame_resources_.size() > 3 ?
186                                 frame_resources_[3] : 0);
187      quad_sink->Append(yuv_video_quad.PassAs<DrawQuad>(), append_quads_data);
188      break;
189    }
190    case VideoFrameExternalResources::RGB_RESOURCE: {
191      DCHECK_EQ(frame_resources_.size(), 1u);
192      if (frame_resources_.size() < 1u)
193        break;
194      bool premultiplied_alpha = true;
195      gfx::PointF uv_top_left(0.f, 0.f);
196      gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
197      float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
198      bool flipped = false;
199      scoped_ptr<TextureDrawQuad> texture_quad = TextureDrawQuad::Create();
200      texture_quad->SetNew(shared_quad_state,
201                           quad_rect,
202                           opaque_rect,
203                           frame_resources_[0],
204                           premultiplied_alpha,
205                           uv_top_left,
206                           uv_bottom_right,
207                           SK_ColorTRANSPARENT,
208                           opacity,
209                           flipped);
210      quad_sink->Append(texture_quad.PassAs<DrawQuad>(), append_quads_data);
211      break;
212    }
213    case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
214      DCHECK_EQ(frame_resources_.size(), 1u);
215      if (frame_resources_.size() < 1u)
216        break;
217      gfx::Transform scale;
218      scale.Scale(tex_width_scale, tex_height_scale);
219      scoped_ptr<StreamVideoDrawQuad> stream_video_quad =
220          StreamVideoDrawQuad::Create();
221      stream_video_quad->SetNew(
222          shared_quad_state,
223          quad_rect,
224          opaque_rect,
225          frame_resources_[0],
226          scale * provider_client_impl_->stream_texture_matrix());
227      quad_sink->Append(stream_video_quad.PassAs<DrawQuad>(),
228                        append_quads_data);
229      break;
230    }
231    case VideoFrameExternalResources::IO_SURFACE: {
232      DCHECK_EQ(frame_resources_.size(), 1u);
233      if (frame_resources_.size() < 1u)
234        break;
235      gfx::Size visible_size(visible_rect.width(), visible_rect.height());
236      scoped_ptr<IOSurfaceDrawQuad> io_surface_quad =
237          IOSurfaceDrawQuad::Create();
238      io_surface_quad->SetNew(shared_quad_state,
239                              quad_rect,
240                              opaque_rect,
241                              visible_size,
242                              frame_resources_[0],
243                              IOSurfaceDrawQuad::UNFLIPPED);
244      quad_sink->Append(io_surface_quad.PassAs<DrawQuad>(),
245                        append_quads_data);
246      break;
247    }
248#if defined(VIDEO_HOLE)
249    // This block and other blocks wrapped around #if defined(GOOGLE_TV) is not
250    // maintained by the general compositor team. Please contact the following
251    // people instead:
252    //
253    // wonsik@chromium.org
254    // ycheo@chromium.org
255    case VideoFrameExternalResources::HOLE: {
256      DCHECK_EQ(frame_resources_.size(), 0u);
257      scoped_ptr<SolidColorDrawQuad> solid_color_draw_quad =
258          SolidColorDrawQuad::Create();
259
260      // Create a solid color quad with transparent black and force no
261      // blending / no anti-aliasing.
262      solid_color_draw_quad->SetAll(
263          shared_quad_state, quad_rect, quad_rect, quad_rect, false,
264          SK_ColorTRANSPARENT, true);
265      quad_sink->Append(solid_color_draw_quad.PassAs<DrawQuad>(),
266                        append_quads_data);
267      break;
268    }
269#endif  // defined(VIDEO_HOLE)
270    case VideoFrameExternalResources::NONE:
271      NOTIMPLEMENTED();
272      break;
273  }
274}
275
276void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
277  LayerImpl::DidDraw(resource_provider);
278
279  DCHECK(frame_.get());
280
281  if (frame_resource_type_ ==
282      VideoFrameExternalResources::SOFTWARE_RESOURCE) {
283    for (size_t i = 0; i < software_resources_.size(); ++i)
284      software_release_callback_.Run(0, false);
285
286    software_resources_.clear();
287    software_release_callback_.Reset();
288  } else {
289    for (size_t i = 0; i < frame_resources_.size(); ++i)
290      resource_provider->DeleteResource(frame_resources_[i]);
291    frame_resources_.clear();
292  }
293
294  provider_client_impl_->PutCurrentFrame(frame_);
295  frame_ = NULL;
296
297  provider_client_impl_->ReleaseLock();
298}
299
300void VideoLayerImpl::ReleaseResources() {
301  updater_.reset();
302}
303
304void VideoLayerImpl::SetNeedsRedraw() {
305  SetUpdateRect(gfx::UnionRects(update_rect(), gfx::RectF(bounds())));
306  layer_tree_impl()->SetNeedsRedraw();
307}
308
309void VideoLayerImpl::SetProviderClientImpl(
310    scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl) {
311  provider_client_impl_ = provider_client_impl;
312}
313
314const char* VideoLayerImpl::LayerTypeAsString() const {
315  return "cc::VideoLayerImpl";
316}
317
318}  // namespace cc
319