src/content/renderer/media/renderer_gpu_video_accelerator_factories.cc

   1 // Copyright 2013 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 "content/renderer/media/renderer_gpu_video_accelerator_factories.h"
   6
   7 #include <GLES2/gl2.h>
   8 #include <GLES2/gl2ext.h>
   9
  10 #include "base/bind.h"
  11 #include "content/child/child_thread.h"
  12 #include "content/common/gpu/client/context_provider_command_buffer.h"
  13 #include "content/common/gpu/client/gl_helper.h"
  14 #include "content/common/gpu/client/gpu_channel_host.h"
  15 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
  16 #include "content/renderer/render_thread_impl.h"
  17 #include "gpu/command_buffer/client/gles2_implementation.h"
  18 #include "media/video/video_decode_accelerator.h"
  19 #include "media/video/video_encode_accelerator.h"
  20 #include "third_party/skia/include/core/SkBitmap.h"
  21 #include "third_party/skia/include/core/SkPixelRef.h"
  22
  23 namespace content {
  24
  25 // static
  26 scoped_refptr<RendererGpuVideoAcceleratorFactories>
  27 RendererGpuVideoAcceleratorFactories::Create(
  28     GpuChannelHost* gpu_channel_host,
  29     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
  30     const scoped_refptr<ContextProviderCommandBuffer>& context_provider) {
  31   scoped_refptr<RendererGpuVideoAcceleratorFactories> factories =
  32       new RendererGpuVideoAcceleratorFactories(
  33           gpu_channel_host, task_runner, context_provider);
  34   // Post task from outside constructor, since AddRef()/Release() is unsafe from
  35   // within.
  36   task_runner->PostTask(
  37       FROM_HERE,
  38       base::Bind(&RendererGpuVideoAcceleratorFactories::BindContext,
  39                  factories));
  40   return factories;
  41 }
  42
  43 RendererGpuVideoAcceleratorFactories::RendererGpuVideoAcceleratorFactories(
  44     GpuChannelHost* gpu_channel_host,
  45     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
  46     const scoped_refptr<ContextProviderCommandBuffer>& context_provider)
  47     : task_runner_(task_runner),
  48       gpu_channel_host_(gpu_channel_host),
  49       context_provider_(context_provider),
  50       thread_safe_sender_(ChildThread::current()->thread_safe_sender()) {}
  51
  52 RendererGpuVideoAcceleratorFactories::~RendererGpuVideoAcceleratorFactories() {}
  53
  54 void RendererGpuVideoAcceleratorFactories::BindContext() {
  55   DCHECK(task_runner_->BelongsToCurrentThread());
  56   if (!context_provider_->BindToCurrentThread())
  57     context_provider_ = NULL;
  58 }
  59
  60 WebGraphicsContext3DCommandBufferImpl*
  61 RendererGpuVideoAcceleratorFactories::GetContext3d() {
  62   DCHECK(task_runner_->BelongsToCurrentThread());
  63   if (!context_provider_.get())
  64     return NULL;
  65   if (context_provider_->IsContextLost()) {
  66     context_provider_->VerifyContexts();
  67     context_provider_ = NULL;
  68     gl_helper_.reset(NULL);
  69     return NULL;
  70   }
  71   return context_provider_->WebContext3D();
  72 }
  73
  74 GLHelper* RendererGpuVideoAcceleratorFactories::GetGLHelper() {
  75   if (!GetContext3d())
  76     return NULL;
  77
  78   if (gl_helper_.get() == NULL) {
  79     gl_helper_.reset(new GLHelper(GetContext3d()->GetImplementation(),
  80                                   GetContext3d()->GetContextSupport()));
  81   }
  82
  83   return gl_helper_.get();
  84 }
  85
  86 scoped_ptr<media::VideoDecodeAccelerator>
  87 RendererGpuVideoAcceleratorFactories::CreateVideoDecodeAccelerator() {
  88   DCHECK(task_runner_->BelongsToCurrentThread());
  89
  90   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
  91   if (context && context->GetCommandBufferProxy()) {
  92     return gpu_channel_host_->CreateVideoDecoder(
  93         context->GetCommandBufferProxy()->GetRouteID());
  94   }
  95
  96   return scoped_ptr<media::VideoDecodeAccelerator>();
  97 }
  98
  99 scoped_ptr<media::VideoEncodeAccelerator>
 100 RendererGpuVideoAcceleratorFactories::CreateVideoEncodeAccelerator() {
 101   DCHECK(task_runner_->BelongsToCurrentThread());
 102
 103   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
 104   if (context && context->GetCommandBufferProxy()) {
 105     return gpu_channel_host_->CreateVideoEncoder(
 106         context->GetCommandBufferProxy()->GetRouteID());
 107   }
 108
 109   return scoped_ptr<media::VideoEncodeAccelerator>();
 110 }
 111
 112 bool RendererGpuVideoAcceleratorFactories::CreateTextures(
 113     int32 count,
 114     const gfx::Size& size,
 115     std::vector<uint32>* texture_ids,
 116     std::vector<gpu::Mailbox>* texture_mailboxes,
 117     uint32 texture_target) {
 118   DCHECK(task_runner_->BelongsToCurrentThread());
 119   DCHECK(texture_target);
 120
 121   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
 122   if (!context)
 123     return false;
 124
 125   gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
 126   texture_ids->resize(count);
 127   texture_mailboxes->resize(count);
 128   gles2->GenTextures(count, &texture_ids->at(0));
 129   for (int i = 0; i < count; ++i) {
 130     gles2->ActiveTexture(GL_TEXTURE0);
 131     uint32 texture_id = texture_ids->at(i);
 132     gles2->BindTexture(texture_target, texture_id);
 133     gles2->TexParameteri(texture_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 134     gles2->TexParameteri(texture_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 135     gles2->TexParameteri(texture_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 136     gles2->TexParameteri(texture_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 137     if (texture_target == GL_TEXTURE_2D) {
 138       gles2->TexImage2D(texture_target,
 139                         0,
 140                         GL_RGBA,
 141                         size.width(),
 142                         size.height(),
 143                         0,
 144                         GL_RGBA,
 145                         GL_UNSIGNED_BYTE,
 146                         NULL);
 147     }
 148     gles2->GenMailboxCHROMIUM(texture_mailboxes->at(i).name);
 149     gles2->ProduceTextureCHROMIUM(texture_target,
 150                                   texture_mailboxes->at(i).name);
 151   }
 152
 153   // We need ShallowFlushCHROMIUM() here to order the command buffer commands
 154   // with respect to IPC to the GPU process, to guarantee that the decoder in
 155   // the GPU process can use these textures as soon as it receives IPC
 156   // notification of them.
 157   gles2->ShallowFlushCHROMIUM();
 158   DCHECK_EQ(gles2->GetError(), static_cast<GLenum>(GL_NO_ERROR));
 159   return true;
 160 }
 161
 162 void RendererGpuVideoAcceleratorFactories::DeleteTexture(uint32 texture_id) {
 163   DCHECK(task_runner_->BelongsToCurrentThread());
 164
 165   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
 166   if (!context)
 167     return;
 168
 169   gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
 170   gles2->DeleteTextures(1, &texture_id);
 171   DCHECK_EQ(gles2->GetError(), static_cast<GLenum>(GL_NO_ERROR));
 172 }
 173
 174 void RendererGpuVideoAcceleratorFactories::WaitSyncPoint(uint32 sync_point) {
 175   DCHECK(task_runner_->BelongsToCurrentThread());
 176
 177   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
 178   if (!context)
 179     return;
 180
 181   gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
 182   gles2->WaitSyncPointCHROMIUM(sync_point);
 183
 184   // Callers expect the WaitSyncPoint to affect the next IPCs. Make sure to
 185   // flush the command buffers to ensure that.
 186   gles2->ShallowFlushCHROMIUM();
 187 }
 188
 189 void RendererGpuVideoAcceleratorFactories::ReadPixels(
 190     uint32 texture_id,
 191     const gfx::Rect& visible_rect,
 192     const SkBitmap& pixels) {
 193   DCHECK(task_runner_->BelongsToCurrentThread());
 194
 195   GLHelper* gl_helper = GetGLHelper();
 196   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
 197
 198   if (!gl_helper || !context)
 199     return;
 200
 201   // Copy texture from texture_id to tmp_texture as texture might be external
 202   // (GL_TEXTURE_EXTERNAL_OES)
 203   GLuint tmp_texture;
 204   tmp_texture = gl_helper->CreateTexture();
 205   context->copyTextureCHROMIUM(
 206       GL_TEXTURE_2D, texture_id, tmp_texture, 0, GL_RGBA, GL_UNSIGNED_BYTE);
 207
 208   unsigned char* pixel_data =
 209       static_cast<unsigned char*>(pixels.pixelRef()->pixels());
 210
 211   if (gl_helper->IsReadbackConfigSupported(pixels.colorType())) {
 212     gl_helper->ReadbackTextureSync(
 213         tmp_texture, visible_rect, pixel_data, pixels.colorType());
 214   } else if (pixels.colorType() == kN32_SkColorType) {
 215     gl_helper->ReadbackTextureSync(
 216         tmp_texture, visible_rect, pixel_data, kRGBA_8888_SkColorType);
 217
 218     int pixel_count = visible_rect.width() * visible_rect.height();
 219     uint32_t* pixels_ptr = static_cast<uint32_t*>(pixels.pixelRef()->pixels());
 220     for (int i = 0; i < pixel_count; ++i) {
 221         uint32_t r = pixels_ptr[i] & 0xFF;
 222         uint32_t g = (pixels_ptr[i] >> 8) & 0xFF;
 223         uint32_t b = (pixels_ptr[i] >> 16) & 0xFF;
 224         uint32_t a = (pixels_ptr[i] >> 24) & 0xFF;
 225         pixels_ptr[i] = (r << SK_R32_SHIFT) |
 226                         (g << SK_G32_SHIFT) |
 227                         (b << SK_B32_SHIFT) |
 228                         (a << SK_A32_SHIFT);
 229     }
 230   } else {
 231     NOTREACHED();
 232   }
 233
 234   gl_helper->DeleteTexture(tmp_texture);
 235 }
 236
 237 base::SharedMemory* RendererGpuVideoAcceleratorFactories::CreateSharedMemory(
 238     size_t size) {
 239   DCHECK(task_runner_->BelongsToCurrentThread());
 240   return ChildThread::AllocateSharedMemory(size, thread_safe_sender_.get());
 241 }
 242
 243 scoped_refptr<base::SingleThreadTaskRunner>
 244 RendererGpuVideoAcceleratorFactories::GetTaskRunner() {
 245   return task_runner_;
 246 }
 247
 248 std::vector<media::VideoEncodeAccelerator::SupportedProfile>
 249 RendererGpuVideoAcceleratorFactories::
 250     GetVideoEncodeAcceleratorSupportedProfiles() {
 251   return gpu_channel_host_->gpu_info()
 252       .video_encode_accelerator_supported_profiles;
 253 }
 254
 255 }  // namespace content