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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 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/media/engine/videoencodersoftwarefallbackwrapper.h" | 11 #include "webrtc/media/engine/videoencodersoftwarefallbackwrapper.h" |
12 | 12 |
| 13 #include "webrtc/media/base/h264_profile_level_id.h" |
13 #include "webrtc/media/engine/internalencoderfactory.h" | 14 #include "webrtc/media/engine/internalencoderfactory.h" |
14 #include "webrtc/modules/video_coding/include/video_error_codes.h" | 15 #include "webrtc/modules/video_coding/include/video_error_codes.h" |
15 #include "webrtc/rtc_base/checks.h" | 16 #include "webrtc/rtc_base/checks.h" |
16 #include "webrtc/rtc_base/logging.h" | 17 #include "webrtc/rtc_base/logging.h" |
17 #include "webrtc/rtc_base/timeutils.h" | 18 #include "webrtc/rtc_base/timeutils.h" |
18 #include "webrtc/system_wrappers/include/field_trial.h" | 19 #include "webrtc/system_wrappers/include/field_trial.h" |
19 | 20 |
20 namespace webrtc { | 21 namespace webrtc { |
21 namespace { | 22 namespace { |
22 const char kVp8ForceFallbackEncoderFieldTrial[] = | 23 const char kVp8ForceFallbackEncoderFieldTrial[] = |
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82 callback_(nullptr), | 83 callback_(nullptr), |
83 forced_fallback_possible_(EnableForcedFallback(codec)) { | 84 forced_fallback_possible_(EnableForcedFallback(codec)) { |
84 if (forced_fallback_possible_) { | 85 if (forced_fallback_possible_) { |
85 GetForcedFallbackParamsFromFieldTrialGroup(&forced_fallback_.low_kbps, | 86 GetForcedFallbackParamsFromFieldTrialGroup(&forced_fallback_.low_kbps, |
86 &forced_fallback_.high_kbps, | 87 &forced_fallback_.high_kbps, |
87 &forced_fallback_.min_low_ms); | 88 &forced_fallback_.min_low_ms); |
88 } | 89 } |
89 } | 90 } |
90 | 91 |
91 bool VideoEncoderSoftwareFallbackWrapper::InitFallbackEncoder() { | 92 bool VideoEncoderSoftwareFallbackWrapper::InitFallbackEncoder() { |
| 93 MaybeModifyCodecForFallback(); |
92 cricket::InternalEncoderFactory internal_factory; | 94 cricket::InternalEncoderFactory internal_factory; |
93 if (!FindMatchingCodec(internal_factory.supported_codecs(), codec_)) { | 95 if (!FindMatchingCodec(internal_factory.supported_codecs(), codec_)) { |
94 LOG(LS_WARNING) | 96 LOG(LS_WARNING) |
95 << "Encoder requesting fallback to codec not supported in software."; | 97 << "Encoder requesting fallback to codec not supported in software."; |
96 return false; | 98 return false; |
97 } | 99 } |
98 fallback_encoder_.reset(internal_factory.CreateVideoEncoder(codec_)); | 100 fallback_encoder_.reset(internal_factory.CreateVideoEncoder(codec_)); |
99 if (fallback_encoder_->InitEncode(&codec_settings_, number_of_cores_, | 101 if (fallback_encoder_->InitEncode(&codec_settings_, number_of_cores_, |
100 max_payload_size_) != | 102 max_payload_size_) != |
101 WEBRTC_VIDEO_CODEC_OK) { | 103 WEBRTC_VIDEO_CODEC_OK) { |
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348 return false; | 350 return false; |
349 } | 351 } |
350 | 352 |
351 bool VideoEncoderSoftwareFallbackWrapper::ForcedFallbackParams::ShouldStop( | 353 bool VideoEncoderSoftwareFallbackWrapper::ForcedFallbackParams::ShouldStop( |
352 uint32_t bitrate_kbps, | 354 uint32_t bitrate_kbps, |
353 const VideoCodec& codec) const { | 355 const VideoCodec& codec) const { |
354 return bitrate_kbps >= high_kbps && | 356 return bitrate_kbps >= high_kbps && |
355 (codec.width * codec.height >= kMinPixelsStop); | 357 (codec.width * codec.height >= kMinPixelsStop); |
356 } | 358 } |
357 | 359 |
| 360 void VideoEncoderSoftwareFallbackWrapper::MaybeModifyCodecForFallback() { |
| 361 // We have a specific case for H264 ConstrainedBaseline because that is the |
| 362 // only supported profile in Sw fallback. |
| 363 if (!cricket::CodecNamesEq(codec_.name.c_str(), cricket::kH264CodecName)) |
| 364 return; |
| 365 codec_.SetParam(cricket::kH264FmtpProfileLevelId, |
| 366 cricket::kH264ProfileLevelConstrainedBaseline); |
| 367 } |
| 368 |
358 } // namespace webrtc | 369 } // namespace webrtc |
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