content/renderer/media/pepper_platform_video_decoder_impl.cc

   1 // Copyright (c) 2012 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/pepper_platform_video_decoder_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "content/common/child_process.h"
  10 #include "content/common/gpu/client/gpu_channel_host.h"
  11 #include "content/renderer/render_thread_impl.h"
  12
  13 using media::BitstreamBuffer;
  14
  15 namespace content {
  16
  17 PlatformVideoDecoderImpl::PlatformVideoDecoderImpl(
  18     VideoDecodeAccelerator::Client* client,
  19     int32 command_buffer_route_id)
  20     : client_(client),
  21       command_buffer_route_id_(command_buffer_route_id) {
  22   DCHECK(client);
  23 }
  24
  25 PlatformVideoDecoderImpl::~PlatformVideoDecoderImpl() {}
  26
  27 bool PlatformVideoDecoderImpl::Initialize(media::VideoCodecProfile profile) {
  28   // TODO(vrk): Support multiple decoders.
  29   if (decoder_.get())
  30     return true;
  31
  32   RenderThreadImpl* render_thread = RenderThreadImpl::current();
  33
  34   // This is not synchronous, but subsequent IPC messages will be buffered, so
  35   // it is okay to immediately send IPC messages through the returned channel.
  36   GpuChannelHost* channel =
  37       render_thread->EstablishGpuChannelSync(
  38           CAUSE_FOR_GPU_LAUNCH_VIDEODECODEACCELERATOR_INITIALIZE);
  39
  40   if (!channel)
  41     return false;
  42
  43   DCHECK_EQ(channel->state(), GpuChannelHost::kConnected);
  44
  45   // Send IPC message to initialize decoder in GPU process.
  46   decoder_.reset(channel->CreateVideoDecoder(
  47       command_buffer_route_id_, profile, this));
  48   return decoder_.get() != NULL;
  49 }
  50
  51 void PlatformVideoDecoderImpl::Decode(const BitstreamBuffer& bitstream_buffer) {
  52   DCHECK(decoder_.get());
  53   decoder_->Decode(bitstream_buffer);
  54 }
  55
  56 void PlatformVideoDecoderImpl::AssignPictureBuffers(
  57     const std::vector<media::PictureBuffer>& buffers) {
  58   DCHECK(decoder_.get());
  59   decoder_->AssignPictureBuffers(buffers);
  60 }
  61
  62 void PlatformVideoDecoderImpl::ReusePictureBuffer(
  63     int32 picture_buffer_id) {
  64   DCHECK(decoder_.get());
  65   decoder_->ReusePictureBuffer(picture_buffer_id);
  66 }
  67
  68 void PlatformVideoDecoderImpl::Flush() {
  69   DCHECK(decoder_.get());
  70   decoder_->Flush();
  71 }
  72
  73 void PlatformVideoDecoderImpl::Reset() {
  74   DCHECK(decoder_.get());
  75   decoder_->Reset();
  76 }
  77
  78 void PlatformVideoDecoderImpl::Destroy() {
  79   if (decoder_.get())
  80     decoder_.release()->Destroy();
  81   client_ = NULL;
  82   delete this;
  83 }
  84
  85 void PlatformVideoDecoderImpl::NotifyError(
  86     VideoDecodeAccelerator::Error error) {
  87   DCHECK(RenderThreadImpl::current());
  88   client_->NotifyError(error);
  89 }
  90
  91 void PlatformVideoDecoderImpl::ProvidePictureBuffers(
  92     uint32 requested_num_of_buffers,
  93     const gfx::Size& dimensions,
  94     uint32 texture_target) {
  95   DCHECK(RenderThreadImpl::current());
  96   client_->ProvidePictureBuffers(requested_num_of_buffers, dimensions,
  97                                  texture_target);
  98 }
  99
 100 void PlatformVideoDecoderImpl::DismissPictureBuffer(int32 picture_buffer_id) {
 101   DCHECK(RenderThreadImpl::current());
 102   client_->DismissPictureBuffer(picture_buffer_id);
 103 }
 104
 105 void PlatformVideoDecoderImpl::PictureReady(const media::Picture& picture) {
 106   DCHECK(RenderThreadImpl::current());
 107   client_->PictureReady(picture);
 108 }
 109
 110 void PlatformVideoDecoderImpl::NotifyInitializeDone() {
 111   NOTREACHED() << "GpuVideoDecodeAcceleratorHost::Initialize is synchronous!";
 112 }
 113
 114 void PlatformVideoDecoderImpl::NotifyEndOfBitstreamBuffer(
 115   int32 bitstream_buffer_id) {
 116   DCHECK(RenderThreadImpl::current());
 117   client_->NotifyEndOfBitstreamBuffer(bitstream_buffer_id);
 118 }
 119
 120 void PlatformVideoDecoderImpl::NotifyFlushDone() {
 121   DCHECK(RenderThreadImpl::current());
 122   client_->NotifyFlushDone();
 123 }
 124
 125 void PlatformVideoDecoderImpl::NotifyResetDone() {
 126   DCHECK(RenderThreadImpl::current());
 127   client_->NotifyResetDone();
 128 }
 129
 130 }  // namespace content