<video> decode in hardware!

content/common/gpu/media/gpu_video_decode_accelerator.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/media/gpu_video_decode_accelerator.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "content/common/gpu/gpu_messages.h"
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
 #include "content/common/gpu/media/omx_video_decode_accelerator.h"
 #include "ui/gfx/gl/gl_context.h"
 #include "ui/gfx/gl/gl_surface_egl.h"
 #endif
+#include "gpu/command_buffer/service/texture_manager.h"
 #include "ui/gfx/size.h"
 
+using gpu::gles2::TextureManager;
+
 GpuVideoDecodeAccelerator::GpuVideoDecodeAccelerator(
     IPC::Message::Sender* sender,
     int32 host_route_id,
     GpuCommandBufferStub* stub)
     : sender_(sender),
       init_done_msg_(NULL),
       host_route_id_(host_route_id),
       stub_(stub),
       video_decode_accelerator_(NULL) {
 }
@@ skipping 67 matching lines @@
                 << "failed";
   }
 }
 
 void GpuVideoDecodeAccelerator::Initialize(
     const media::VideoDecodeAccelerator::Profile profile,
     IPC::Message* init_done_msg) {
   DCHECK(!video_decode_accelerator_.get());
   DCHECK(!init_done_msg_);
   DCHECK(init_done_msg);
+  init_done_msg_ = init_done_msg;
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
   DCHECK(stub_ && stub_->decoder());
-  init_done_msg_ = init_done_msg;
   OmxVideoDecodeAccelerator* omx_decoder = new OmxVideoDecodeAccelerator(this);
   omx_decoder->SetEglState(
       gfx::GLSurfaceEGL::GetHardwareDisplay(),
       stub_->decoder()->GetGLContext()->GetHandle());
   video_decode_accelerator_ = omx_decoder;
   video_decode_accelerator_->Initialize(profile);
-#else
+#else  // Update RenderViewImpl::createMediaPlayer when adding clauses.
   NOTIMPLEMENTED() << "HW video decode acceleration not available.";
   NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
 #endif  // defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
 }
 
 void GpuVideoDecodeAccelerator::OnDecode(
     base::SharedMemoryHandle handle, int32 id, int32 size) {
   DCHECK(video_decode_accelerator_.get());
   video_decode_accelerator_->Decode(media::BitstreamBuffer(id, handle, size));
 }
 
 void GpuVideoDecodeAccelerator::OnAssignPictureBuffers(
       const std::vector<int32>& buffer_ids,
       const std::vector<uint32>& texture_ids,
       const std::vector<gfx::Size>& sizes) {
   DCHECK(stub_ && stub_->decoder());  // Ensure already Initialize()'d.
   gpu::gles2::GLES2Decoder* command_decoder = stub_->decoder();
+  gpu::gles2::TextureManager* texture_manager =
+      command_decoder->GetContextGroup()->texture_manager();
 
   std::vector<media::PictureBuffer> buffers;
   for (uint32 i = 0; i < buffer_ids.size(); ++i) {
+    gpu::gles2::TextureManager::TextureInfo* info =

[Ami GONE FROM CHROMIUM, 2011/11/30 00:08:37]

The changes in this file are pulled out to
http://codereview.chromium.org/8702017/ which will land before this CL.

+        texture_manager->GetTextureInfo(texture_ids[i]);
+    if (!info ||
+        !texture_manager->ClearRenderableLevels(command_decoder, info)) {
+      // TODO(fischman): send an error for invalid textures.
+      DLOG(DFATAL) << "Failed to Clear texture!";
+      return;
+    }
     uint32 service_texture_id;
     if (!command_decoder->GetServiceTextureId(
             texture_ids[i], &service_texture_id)) {
       // TODO(vrk): Send an error for invalid GLES buffers.
       DLOG(DFATAL) << "Failed to translate texture!";
       return;
     }
     buffers.push_back(media::PictureBuffer(
         buffer_ids[i], sizes[i], service_texture_id));
   }
@@ skipping 44 matching lines @@
 
 void GpuVideoDecodeAccelerator::NotifyResetDone() {
   if (!Send(new AcceleratedVideoDecoderHostMsg_ResetDone(host_route_id_)))
     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_ResetDone) failed";
 }
 
 bool GpuVideoDecodeAccelerator::Send(IPC::Message* message) {
   DCHECK(sender_);
   return sender_->Send(message);
 }