| /* |
| * Copyright 2017 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #import "WebRTC/RTCVideoCodecH264.h" |
| |
| #include <vector> |
| |
| #import "RTCVideoCodec+Private.h" |
| #import "WebRTC/RTCVideoCodec.h" |
| |
| #include "rtc_base/timeutils.h" |
| #include "sdk/objc/Framework/Classes/Video/objc_frame_buffer.h" |
| #include "system_wrappers/include/field_trial.h" |
| |
| const char kHighProfileExperiment[] = "WebRTC-H264HighProfile"; |
| static NSString *kLevel31ConstrainedHigh = @"640c1f"; |
| static NSString *kLevel31ConstrainedBaseline = @"42e01f"; |
| |
| bool IsHighProfileEnabled() { |
| return webrtc::field_trial::IsEnabled(kHighProfileExperiment); |
| } |
| |
| // H264 specific settings. |
| @implementation RTCCodecSpecificInfoH264 |
| |
| @synthesize packetizationMode = _packetizationMode; |
| |
| - (webrtc::CodecSpecificInfo)nativeCodecSpecificInfo { |
| webrtc::CodecSpecificInfo codecSpecificInfo; |
| codecSpecificInfo.codecType = webrtc::kVideoCodecH264; |
| codecSpecificInfo.codec_name = "H264"; |
| codecSpecificInfo.codecSpecific.H264.packetization_mode = |
| (webrtc::H264PacketizationMode)_packetizationMode; |
| |
| return codecSpecificInfo; |
| } |
| |
| @end |
| |
| // Encoder factory. |
| @implementation RTCVideoEncoderFactoryH264 |
| |
| - (NSArray<RTCVideoCodecInfo *> *)supportedCodecs { |
| NSMutableArray<RTCVideoCodecInfo *> *codecs = [NSMutableArray array]; |
| NSString *codecName = [NSString stringWithUTF8String:cricket::kH264CodecName]; |
| |
| if (IsHighProfileEnabled()) { |
| NSDictionary<NSString *, NSString *> *constrainedHighParams = @{ |
| @"profile-level-id" : kLevel31ConstrainedHigh, |
| @"level-asymmetry-allowed" : @"1", |
| @"packetization-mode" : @"1", |
| }; |
| RTCVideoCodecInfo *constrainedHighInfo = |
| [[RTCVideoCodecInfo alloc] initWithName:codecName parameters:constrainedHighParams]; |
| [codecs addObject:constrainedHighInfo]; |
| } |
| |
| NSDictionary<NSString *, NSString *> *constrainedBaselineParams = @{ |
| @"profile-level-id" : kLevel31ConstrainedBaseline, |
| @"level-asymmetry-allowed" : @"1", |
| @"packetization-mode" : @"1", |
| }; |
| RTCVideoCodecInfo *constrainedBaselineInfo = |
| [[RTCVideoCodecInfo alloc] initWithName:codecName parameters:constrainedBaselineParams]; |
| [codecs addObject:constrainedBaselineInfo]; |
| |
| return [codecs copy]; |
| } |
| |
| - (id<RTCVideoEncoder>)createEncoder:(RTCVideoCodecInfo *)info { |
| return [[RTCVideoEncoderH264 alloc] initWithCodecInfo:info]; |
| } |
| |
| @end |
| |
| // Decoder factory. |
| @implementation RTCVideoDecoderFactoryH264 |
| |
| - (id<RTCVideoDecoder>)createDecoder:(RTCVideoCodecInfo *)info { |
| return [[RTCVideoDecoderH264 alloc] init]; |
| } |
| |
| - (NSArray<RTCVideoCodecInfo *> *)supportedCodecs { |
| NSString *codecName = [NSString stringWithUTF8String:cricket::kH264CodecName]; |
| return @[ [[RTCVideoCodecInfo alloc] initWithName:codecName parameters:nil] ]; |
| } |
| |
| @end |