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1 // Copyright 2014 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/cast/video_sender/fake_software_video_encoder.h" | |
6 | |
7 #include "base/json/json_writer.h" | |
8 #include "base/values.h" | |
9 #include "media/cast/transport/cast_transport_config.h" | |
10 | |
11 #ifndef OFFICIAL_BUILD | |
12 | |
13 namespace media { | |
14 namespace cast { | |
15 | |
16 FakeSoftwareVideoEncoder::FakeSoftwareVideoEncoder( | |
17 const VideoSenderConfig& video_config) | |
18 : video_config_(video_config), | |
19 next_frame_is_key_(true), | |
20 frame_id_(0), | |
21 frame_id_to_reference_(0), | |
22 frame_size_(0) { | |
23 } | |
24 | |
25 FakeSoftwareVideoEncoder::~FakeSoftwareVideoEncoder() {} | |
26 | |
27 void FakeSoftwareVideoEncoder::Initialize() {} | |
28 | |
29 bool FakeSoftwareVideoEncoder::Encode( | |
30 const scoped_refptr<media::VideoFrame>& video_frame, | |
31 transport::EncodedFrame* encoded_image) { | |
32 encoded_image->frame_id = frame_id_++; | |
33 if (next_frame_is_key_) { | |
34 encoded_image->dependency = transport::EncodedFrame::KEY; | |
35 encoded_image->referenced_frame_id = encoded_image->frame_id; | |
36 next_frame_is_key_ = false; | |
37 } else { | |
38 encoded_image->dependency = transport::EncodedFrame::DEPENDENT; | |
39 encoded_image->referenced_frame_id = encoded_image->frame_id - 1; | |
40 } | |
41 | |
42 base::DictionaryValue values; | |
43 values.SetBoolean("key", | |
44 encoded_image->dependency == transport::EncodedFrame::KEY); | |
45 values.SetInteger("ref", encoded_image->referenced_frame_id); | |
46 values.SetInteger("id", encoded_image->frame_id); | |
47 values.SetInteger("size", frame_size_); | |
48 base::JSONWriter::Write(&values, &encoded_image->data); | |
49 encoded_image->data.resize( | |
50 std::max<size_t>(encoded_image->data.size(), frame_size_), ' '); | |
51 return true; | |
52 } | |
53 | |
54 void FakeSoftwareVideoEncoder::UpdateRates(uint32 new_bitrate) { | |
55 frame_size_ = new_bitrate / video_config_.max_frame_rate / 8; | |
56 } | |
57 | |
58 void FakeSoftwareVideoEncoder::GenerateKeyFrame() { | |
59 next_frame_is_key_ = true; | |
60 } | |
61 | |
62 void FakeSoftwareVideoEncoder::LatestFrameIdToReference(uint32 frame_id) { | |
63 frame_id_to_reference_ = frame_id; | |
64 } | |
65 | |
66 } // namespace cast | |
67 } // namespace media | |
68 | |
69 #endif | |
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