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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.h" | 11 #include "webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.h" |
12 | 12 |
13 #include <algorithm> | 13 #include <algorithm> |
14 | 14 |
15 // NOTE(ajm): Path provided by gyp. | 15 // NOTE(ajm): Path provided by gyp. |
16 #include "libyuv/scale.h" // NOLINT | 16 #include "libyuv/scale.h" // NOLINT |
17 | 17 |
18 #include "webrtc/base/checks.h" | 18 #include "webrtc/base/checks.h" |
19 #include "webrtc/common.h" | |
20 #include "webrtc/modules/video_coding/codecs/vp8/screenshare_layers.h" | 19 #include "webrtc/modules/video_coding/codecs/vp8/screenshare_layers.h" |
21 | 20 |
22 namespace { | 21 namespace { |
23 | 22 |
24 const unsigned int kDefaultMinQp = 2; | 23 const unsigned int kDefaultMinQp = 2; |
25 const unsigned int kDefaultMaxQp = 56; | 24 const unsigned int kDefaultMaxQp = 56; |
26 // Max qp for lowest spatial resolution when doing simulcast. | 25 // Max qp for lowest spatial resolution when doing simulcast. |
27 const unsigned int kLowestResMaxQp = 45; | 26 const unsigned int kLowestResMaxQp = 45; |
28 | 27 |
29 uint32_t SumStreamTargetBitrate(int streams, const webrtc::VideoCodec& codec) { | 28 uint32_t SumStreamTargetBitrate(int streams, const webrtc::VideoCodec& codec) { |
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88 if (inst->codecSpecific.VP8.automaticResizeOn && | 87 if (inst->codecSpecific.VP8.automaticResizeOn && |
89 inst->numberOfSimulcastStreams > 1) { | 88 inst->numberOfSimulcastStreams > 1) { |
90 return WEBRTC_VIDEO_CODEC_ERR_PARAMETER; | 89 return WEBRTC_VIDEO_CODEC_ERR_PARAMETER; |
91 } | 90 } |
92 return WEBRTC_VIDEO_CODEC_OK; | 91 return WEBRTC_VIDEO_CODEC_OK; |
93 } | 92 } |
94 | 93 |
95 // TL1 FrameDropper's max time to drop frames. | 94 // TL1 FrameDropper's max time to drop frames. |
96 const float kTl1MaxTimeToDropFrames = 20.0f; | 95 const float kTl1MaxTimeToDropFrames = 20.0f; |
97 | 96 |
98 struct ScreenshareTemporalLayersFactory : webrtc::TemporalLayers::Factory { | 97 struct ScreenshareTemporalLayersFactory : webrtc::TemporalLayersFactory { |
99 ScreenshareTemporalLayersFactory() | 98 ScreenshareTemporalLayersFactory() |
100 : tl1_frame_dropper_(kTl1MaxTimeToDropFrames) {} | 99 : tl1_frame_dropper_(kTl1MaxTimeToDropFrames) {} |
101 | 100 |
102 virtual ~ScreenshareTemporalLayersFactory() {} | 101 virtual ~ScreenshareTemporalLayersFactory() {} |
103 | 102 |
104 virtual webrtc::TemporalLayers* Create(int num_temporal_layers, | 103 virtual webrtc::TemporalLayers* Create(int num_temporal_layers, |
105 uint8_t initial_tl0_pic_idx) const { | 104 uint8_t initial_tl0_pic_idx) const { |
106 return new webrtc::ScreenshareLayers(num_temporal_layers, rand()); | 105 return new webrtc::ScreenshareLayers(num_temporal_layers, rand()); |
107 } | 106 } |
108 | 107 |
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182 bool doing_simulcast = (number_of_streams > 1); | 181 bool doing_simulcast = (number_of_streams > 1); |
183 | 182 |
184 if (doing_simulcast && !ValidSimulcastResolutions(*inst, number_of_streams)) { | 183 if (doing_simulcast && !ValidSimulcastResolutions(*inst, number_of_streams)) { |
185 return WEBRTC_VIDEO_CODEC_ERR_PARAMETER; | 184 return WEBRTC_VIDEO_CODEC_ERR_PARAMETER; |
186 } | 185 } |
187 | 186 |
188 codec_ = *inst; | 187 codec_ = *inst; |
189 | 188 |
190 // Special mode when screensharing on a single stream. | 189 // Special mode when screensharing on a single stream. |
191 if (number_of_streams == 1 && inst->mode == kScreensharing) { | 190 if (number_of_streams == 1 && inst->mode == kScreensharing) { |
192 screensharing_extra_options_.reset(new Config()); | 191 screensharing_tl_factory_.reset(new ScreenshareTemporalLayersFactory()); |
193 screensharing_extra_options_->Set<TemporalLayers::Factory>( | 192 codec_.codecSpecific.VP8.tl_factory = screensharing_tl_factory_.get(); |
194 new ScreenshareTemporalLayersFactory()); | |
195 codec_.extra_options = screensharing_extra_options_.get(); | |
196 } | 193 } |
197 | 194 |
198 // Create |number_of_streams| of encoder instances and init them. | 195 // Create |number_of_streams| of encoder instances and init them. |
199 for (int i = 0; i < number_of_streams; ++i) { | 196 for (int i = 0; i < number_of_streams; ++i) { |
200 VideoCodec stream_codec; | 197 VideoCodec stream_codec; |
201 bool send_stream = true; | 198 bool send_stream = true; |
202 if (!doing_simulcast) { | 199 if (!doing_simulcast) { |
203 stream_codec = codec_; | 200 stream_codec = codec_; |
204 stream_codec.numberOfSimulcastStreams = 1; | 201 stream_codec.numberOfSimulcastStreams = 1; |
205 } else { | 202 } else { |
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497 } | 494 } |
498 | 495 |
499 const char* SimulcastEncoderAdapter::ImplementationName() const { | 496 const char* SimulcastEncoderAdapter::ImplementationName() const { |
500 // We should not be calling this method before streaminfos_ are configured. | 497 // We should not be calling this method before streaminfos_ are configured. |
501 RTC_DCHECK(!streaminfos_.empty()); | 498 RTC_DCHECK(!streaminfos_.empty()); |
502 // TODO(pbos): Support multiple implementation names for different encoders. | 499 // TODO(pbos): Support multiple implementation names for different encoders. |
503 return streaminfos_[0].encoder->ImplementationName(); | 500 return streaminfos_[0].encoder->ImplementationName(); |
504 } | 501 } |
505 | 502 |
506 } // namespace webrtc | 503 } // namespace webrtc |
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