blob: 624bce3643a2a9a503a6d641f6083658f13ba418 [file] [log] [blame]
Jianhui Daia2e945e2023-06-19 01:36:421/*
2 * Copyright (c) 2023 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10#include "rtc_tools/video_encoder/encoded_image_file_writer.h"
11
12#include "modules/video_coding/svc/scalability_mode_util.h"
13#include "rtc_base/logging.h"
14
15namespace webrtc {
16namespace test {
17
18EncodedImageFileWriter::EncodedImageFileWriter(
19 const VideoCodec& video_codec_setting)
20 : video_codec_setting_(video_codec_setting) {
21 const char* codec_string =
22 CodecTypeToPayloadString(video_codec_setting.codecType);
23
24 // Retrieve scalability mode information.
25 absl::optional<ScalabilityMode> scalability_mode =
26 video_codec_setting.GetScalabilityMode();
27 RTC_CHECK(scalability_mode);
28 spatial_layers_ = ScalabilityModeToNumSpatialLayers(*scalability_mode);
29 temporal_layers_ = ScalabilityModeToNumTemporalLayers(*scalability_mode);
30 inter_layer_pred_mode_ =
31 ScalabilityModeToInterLayerPredMode(*scalability_mode);
32
33 RTC_CHECK_GT(spatial_layers_, 0);
34 RTC_CHECK_GT(temporal_layers_, 0);
35 // Create writer for every decode target.
36 for (int i = 0; i < spatial_layers_; ++i) {
37 for (int j = 0; j < temporal_layers_; ++j) {
38 char buffer[256];
39 rtc::SimpleStringBuilder name(buffer);
40 name << "output-" << codec_string << "-"
41 << ScalabilityModeToString(*scalability_mode) << "-L" << i << "T"
42 << j << ".ivf";
43
44 decode_target_writers_.emplace_back(std::make_pair(
45 IvfFileWriter::Wrap(FileWrapper::OpenWriteOnly(name.str()), 0),
46 name.str()));
47 }
48 }
49}
50
51EncodedImageFileWriter::~EncodedImageFileWriter() {
52 for (size_t i = 0; i < decode_target_writers_.size(); ++i) {
53 decode_target_writers_[i].first->Close();
54 RTC_LOG(LS_INFO) << "Written: " << decode_target_writers_[i].second;
55 }
56}
57
58int EncodedImageFileWriter::Write(const EncodedImage& encoded_image) {
59 // L1T1 does not set `SpatialIndex` and `TemporalIndex` in `EncodedImage`.
60 const int spatial_index = encoded_image.SpatialIndex().value_or(0);
61 const int temporal_index = encoded_image.TemporalIndex().value_or(0);
62 RTC_CHECK_LT(spatial_index, spatial_layers_);
63 RTC_CHECK_LT(temporal_index, temporal_layers_);
64
65 if (spatial_index == 0) {
66 is_base_layer_key_frame =
67 (encoded_image._frameType == VideoFrameType::kVideoFrameKey);
68 }
69
70 switch (inter_layer_pred_mode_) {
71 case InterLayerPredMode::kOff: {
72 // Write to this spatial layer.
73 for (int j = temporal_index; j < temporal_layers_; ++j) {
74 const int index = spatial_index * temporal_layers_ + j;
75 RTC_CHECK_LT(index, decode_target_writers_.size());
76
77 decode_target_writers_[index].first->WriteFrame(
78 encoded_image, video_codec_setting_.codecType);
79 }
80 break;
81 }
82
83 case InterLayerPredMode::kOn: {
84 // Write to this and higher spatial layers.
85 for (int i = spatial_index; i < spatial_layers_; ++i) {
86 for (int j = temporal_index; j < temporal_layers_; ++j) {
87 const int index = i * temporal_layers_ + j;
88 RTC_CHECK_LT(index, decode_target_writers_.size());
89
90 decode_target_writers_[index].first->WriteFrame(
91 encoded_image, video_codec_setting_.codecType);
92 }
93 }
94 break;
95 }
96
97 case InterLayerPredMode::kOnKeyPic: {
98 for (int i = spatial_index; i < spatial_layers_; ++i) {
99 for (int j = temporal_index; j < temporal_layers_; ++j) {
100 const int index = i * temporal_layers_ + j;
101 RTC_CHECK_LT(index, decode_target_writers_.size());
102
103 decode_target_writers_[index].first->WriteFrame(
104 encoded_image, video_codec_setting_.codecType);
105 }
106
107 // Write to higher spatial layers only if key frame.
108 if (!is_base_layer_key_frame) {
109 break;
110 }
111 }
112 break;
113 }
114 }
115
116 return 0;
117}
118
119} // namespace test
120} // namespace webrtc