src/media/base/android/video_decoder_job.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 "media/base/android/video_decoder_job.h"
   6
   7 #include "base/bind.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/threading/thread.h"
  10 #include "media/base/android/media_codec_bridge.h"
  11
  12 namespace media {
  13
  14 class VideoDecoderThread : public base::Thread {
  15  public:
  16   VideoDecoderThread() : base::Thread("MediaSource_VideoDecoderThread") {
  17     Start();
  18   }
  19 };
  20
  21 // TODO(qinmin): Check if it is tolerable to use worker pool to handle all the
  22 // decoding tasks so that we don't need a global thread here.
  23 // http://crbug.com/245750
  24 base::LazyInstance<VideoDecoderThread>::Leaky
  25     g_video_decoder_thread = LAZY_INSTANCE_INITIALIZER;
  26
  27 VideoDecoderJob* VideoDecoderJob::Create(const VideoCodec video_codec,
  28                                          bool is_secure,
  29                                          const gfx::Size& size,
  30                                          jobject surface,
  31                                          jobject media_crypto,
  32                                          const base::Closure& request_data_cb) {
  33   scoped_ptr<VideoCodecBridge> codec(
  34       VideoCodecBridge::Create(video_codec, is_secure));
  35   if (codec && codec->Start(video_codec, size, surface, media_crypto))
  36     return new VideoDecoderJob(codec.Pass(), request_data_cb);
  37
  38   LOG(ERROR) << "Failed to create VideoDecoderJob.";
  39   return NULL;
  40 }
  41
  42 VideoDecoderJob::VideoDecoderJob(
  43     scoped_ptr<VideoCodecBridge> video_codec_bridge,
  44     const base::Closure& request_data_cb)
  45     : MediaDecoderJob(g_video_decoder_thread.Pointer()->message_loop_proxy(),
  46                       video_codec_bridge.get(), request_data_cb),
  47       video_codec_bridge_(video_codec_bridge.Pass()) {
  48 }
  49
  50 VideoDecoderJob::~VideoDecoderJob() {
  51 }
  52
  53 void VideoDecoderJob::ReleaseOutputBuffer(
  54     int output_buffer_index,
  55     size_t size,
  56     bool render_output,
  57     const ReleaseOutputCompletionCallback& callback) {
  58   video_codec_bridge_->ReleaseOutputBuffer(output_buffer_index, render_output);
  59   callback.Run(0u);
  60 }
  61
  62 bool VideoDecoderJob::ComputeTimeToRender() const {
  63   return true;
  64 }
  65
  66 }  // namespace media