Add FakeVideoDecoder.

media/filters/fake_demuxer_stream.cc

 // Copyright (c) 2013 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 "media/filters/fake_demuxer_stream.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 16 matching lines @@
 static const char kFakeBufferHeader[] = "Fake Buffer";
 
 FakeDemuxerStream::FakeDemuxerStream(int num_configs,
                                      int num_buffers_in_one_config,
                                      bool is_encrypted)
     : message_loop_(base::MessageLoopProxy::current()),
       num_configs_left_(num_configs),
       num_buffers_in_one_config_(num_buffers_in_one_config),
       is_encrypted_(is_encrypted),
       num_buffers_left_in_current_config_(num_buffers_in_one_config),
+      num_buffers_returned_(0),
       current_timestamp_(base::TimeDelta::FromMilliseconds(kStartTimestampMs)),
       duration_(base::TimeDelta::FromMilliseconds(kDurationMs)),
       next_coded_size_(kStartWidth, kStartHeight),
-      hold_next_read_(false) {
+      next_read_num_(0),
+      read_to_hold_(-1) {
   DCHECK_GT(num_configs_left_, 0);
   DCHECK_GT(num_buffers_in_one_config_, 0);
   UpdateVideoDecoderConfig();
 }
 
 FakeDemuxerStream::~FakeDemuxerStream() {}
 
 void FakeDemuxerStream::Read(const ReadCB& read_cb) {
   DCHECK(message_loop_->BelongsToCurrentThread());
   DCHECK(read_cb_.is_null());
 
   read_cb_ = BindToCurrentLoop(read_cb);
 
-  if (!hold_next_read_)
-    DoRead();
+  if (read_to_hold_ == next_read_num_)
+    return;
+
+  DCHECK(read_to_hold_ == -1 || read_to_hold_ > next_read_num_);
+  DoRead();
 }
 
 const AudioDecoderConfig& FakeDemuxerStream::audio_decoder_config() {
   DCHECK(message_loop_->BelongsToCurrentThread());
   NOTREACHED();
   return audio_decoder_config_;
 }
 
 const VideoDecoderConfig& FakeDemuxerStream::video_decoder_config() {
   DCHECK(message_loop_->BelongsToCurrentThread());
   return video_decoder_config_;
 }
 
 // TODO(xhwang): Support audio if needed.
 DemuxerStream::Type FakeDemuxerStream::type() {
   DCHECK(message_loop_->BelongsToCurrentThread());
   return VIDEO;
 }
 
 void FakeDemuxerStream::EnableBitstreamConverter() {
   DCHECK(message_loop_->BelongsToCurrentThread());
 }
 
 void FakeDemuxerStream::HoldNextRead() {
   DCHECK(message_loop_->BelongsToCurrentThread());
-  hold_next_read_ = true;
+  read_to_hold_ = next_read_num_;
+}
+
+void FakeDemuxerStream::HoldNextConfigChangeRead() {
+  DCHECK(message_loop_->BelongsToCurrentThread());
+  // Set |read_to_hold_| to be the next config change read.
+  read_to_hold_ = next_read_num_ + num_buffers_in_one_config_ -
+                  next_read_num_ % (num_buffers_in_one_config_ + 1);
 }
 
 void FakeDemuxerStream::SatisfyRead() {
   DCHECK(message_loop_->BelongsToCurrentThread());
-  DCHECK(hold_next_read_);
+  DCHECK_EQ(read_to_hold_, next_read_num_);
   DCHECK(!read_cb_.is_null());
 
+  read_to_hold_ = -1;
   DoRead();
 }
 
 void FakeDemuxerStream::Reset() {
-  hold_next_read_ = false;
+  read_to_hold_ = -1;
 
   if (!read_cb_.is_null())
     base::ResetAndReturn(&read_cb_).Run(kAborted, NULL);
 }
 
 void FakeDemuxerStream::UpdateVideoDecoderConfig() {
   const gfx::Rect kVisibleRect(kStartWidth, kStartHeight);
   video_decoder_config_.Initialize(
       kCodecVP8, VIDEO_CODEC_PROFILE_UNKNOWN, VideoFrame::YV12,
       next_coded_size_, kVisibleRect, next_coded_size_,
       NULL, 0, is_encrypted_, false);
   next_coded_size_.Enlarge(kWidthDelta, kHeightDelta);
 }
 
 void FakeDemuxerStream::DoRead() {
   DCHECK(message_loop_->BelongsToCurrentThread());
   DCHECK(!read_cb_.is_null());
 
+  next_read_num_++;
+
   if (num_buffers_left_in_current_config_ == 0) {
     // End of stream.
     if (num_configs_left_ == 0) {
       base::ResetAndReturn(&read_cb_).Run(kOk,
                                           DecoderBuffer::CreateEOSBuffer());
       return;
     }
 
     // Config change.
     num_buffers_left_in_current_config_ = num_buffers_in_one_config_;
@@ skipping 14 matching lines @@
 
   // TODO(xhwang): Output out-of-order buffers if needed.
   buffer->SetTimestamp(current_timestamp_);
   buffer->SetDuration(duration_);
   current_timestamp_ += duration_;
 
   num_buffers_left_in_current_config_--;
   if (num_buffers_left_in_current_config_ == 0)
     num_configs_left_--;
 
+  num_buffers_returned_++;
   base::ResetAndReturn(&read_cb_).Run(kOk, buffer);
 }
 
 }  // namespace media