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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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