Cast: Adding support for GPU accelerated encode

media/cast/test/fake_video_encode_accelerator.cc

+// Copyright 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/cast/test/fake_video_encode_accelerator.h"
+
+namespace media {
+namespace cast {
+namespace test {
+
+static const unsigned int kMinimumInputCount = 1;
+static const size_t kMinimumOutputBufferSize = 123456;
+
+FakeVideoEncodeAccelerator::FakeVideoEncodeAccelerator(
+    VideoEncodeAccelerator::Client* client)
+    : client_(client ),

[mikhal1, 2013/12/17 22:39:47]

remove extra space

[pwestin, 2013/12/19 16:03:47]

Done.

+      first_(true) {

[mikhal1, 2013/12/17 22:39:47]

DCHECK on client?

[pwestin, 2013/12/19 16:03:47]

Done.

+}
+
+FakeVideoEncodeAccelerator::~FakeVideoEncodeAccelerator() {
+}
+
+void FakeVideoEncodeAccelerator::Initialize(
+    media::VideoFrame::Format input_format,
+    const gfx::Size& input_visible_size,
+    VideoCodecProfile output_profile,
+    uint32 initial_bitrate) {
+  DCHECK(client_);
+
+  if (output_profile != media::VP8PROFILE_MAIN &&
+      output_profile != media::H264PROFILE_MAIN) {
+    client_->NotifyError(kInvalidArgumentError);
+    return;
+  }
+  client_->NotifyInitializeDone();
+  client_->RequireBitstreamBuffers(kMinimumInputCount,
+                                   input_visible_size,
+                                   kMinimumOutputBufferSize);
+}
+
+void FakeVideoEncodeAccelerator::Encode(const scoped_refptr<VideoFrame>& frame,
+                                        bool force_keyframe) {
+  DCHECK(client_);
+  DCHECK(!available_buffer_ids_.empty());
+
+  // Fake that we have encoded the frame; resulting in using the full output
+  // buffer.
+  int32 id = available_buffer_ids_.front();
+  available_buffer_ids_.pop_front();
+
+  bool is_key_fame = force_keyframe;
+  if (first_) {

[mikhal1, 2013/12/17 22:39:47]

If it's the first frame, won't the encoder create a key frame by default?

[pwestin, 2013/12/19 16:03:47]

in normal case yes but this is a fake encoder, no where else to put the code

+    is_key_fame = true;
+    first_ = false;
+  }
+  client_->BitstreamBufferReady(id, kMinimumOutputBufferSize, is_key_fame);
+}
+
+void FakeVideoEncodeAccelerator::UseOutputBitstreamBuffer(
+    const BitstreamBuffer& buffer) {
+  available_buffer_ids_.push_back(buffer.id());
+}
+
+void FakeVideoEncodeAccelerator::RequestEncodingParametersChange(
+    uint32 bitrate, uint32 framerate) {
+  // No-op.

[mikhal1, 2013/12/17 22:39:47]

What does this mean?

[pwestin, 2013/12/19 16:03:47]

No operation; frequently used in chrome ~940 times

+}
+
+void FakeVideoEncodeAccelerator::Destroy() {
+  delete this;
+}
+
+}  // namespace test
+}  // namespace cast
+}  // namespace media
+
+