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