1/* 2 * Copyright 2017 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 11#import "RTCDefaultVideoEncoderFactory.h" 12 13#import "RTCH264ProfileLevelId.h" 14#import "RTCVideoEncoderH264.h" 15#import "api/video_codec/RTCVideoCodecConstants.h" 16#import "api/video_codec/RTCVideoEncoderVP8.h" 17#import "api/video_codec/RTCVideoEncoderVP9.h" 18#import "base/RTCVideoCodecInfo.h" 19 20#if defined(RTC_USE_LIBAOM_AV1_ENCODER) 21#import "api/video_codec/RTCVideoEncoderAV1.h" // nogncheck 22#endif 23 24@implementation RTC_OBJC_TYPE (RTCDefaultVideoEncoderFactory) 25 26@synthesize preferredCodec; 27 28+ (NSArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *)supportedCodecs { 29 NSDictionary<NSString *, NSString *> *constrainedHighParams = @{ 30 @"profile-level-id" : kRTCMaxSupportedH264ProfileLevelConstrainedHigh, 31 @"level-asymmetry-allowed" : @"1", 32 @"packetization-mode" : @"1", 33 }; 34 RTC_OBJC_TYPE(RTCVideoCodecInfo) *constrainedHighInfo = 35 [[RTC_OBJC_TYPE(RTCVideoCodecInfo) alloc] initWithName:kRTCVideoCodecH264Name 36 parameters:constrainedHighParams]; 37 38 NSDictionary<NSString *, NSString *> *constrainedBaselineParams = @{ 39 @"profile-level-id" : kRTCMaxSupportedH264ProfileLevelConstrainedBaseline, 40 @"level-asymmetry-allowed" : @"1", 41 @"packetization-mode" : @"1", 42 }; 43 RTC_OBJC_TYPE(RTCVideoCodecInfo) *constrainedBaselineInfo = 44 [[RTC_OBJC_TYPE(RTCVideoCodecInfo) alloc] initWithName:kRTCVideoCodecH264Name 45 parameters:constrainedBaselineParams]; 46 47 RTC_OBJC_TYPE(RTCVideoCodecInfo) *vp8Info = 48 [[RTC_OBJC_TYPE(RTCVideoCodecInfo) alloc] initWithName:kRTCVideoCodecVp8Name]; 49 50 NSMutableArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *result = [@[ 51 constrainedHighInfo, 52 constrainedBaselineInfo, 53 vp8Info, 54 ] mutableCopy]; 55 56 if ([RTC_OBJC_TYPE(RTCVideoEncoderVP9) isSupported]) { 57 [result 58 addObject:[[RTC_OBJC_TYPE(RTCVideoCodecInfo) alloc] initWithName:kRTCVideoCodecVp9Name]]; 59 } 60 61#if defined(RTC_USE_LIBAOM_AV1_ENCODER) 62 [result addObject:[[RTC_OBJC_TYPE(RTCVideoCodecInfo) alloc] initWithName:kRTCVideoCodecAv1Name]]; 63#endif 64 65 return result; 66} 67 68- (id<RTC_OBJC_TYPE(RTCVideoEncoder)>)createEncoder:(RTC_OBJC_TYPE(RTCVideoCodecInfo) *)info { 69 if ([info.name isEqualToString:kRTCVideoCodecH264Name]) { 70 return [[RTC_OBJC_TYPE(RTCVideoEncoderH264) alloc] initWithCodecInfo:info]; 71 } else if ([info.name isEqualToString:kRTCVideoCodecVp8Name]) { 72 return [RTC_OBJC_TYPE(RTCVideoEncoderVP8) vp8Encoder]; 73 } else if ([info.name isEqualToString:kRTCVideoCodecVp9Name] && 74 [RTC_OBJC_TYPE(RTCVideoEncoderVP9) isSupported]) { 75 return [RTC_OBJC_TYPE(RTCVideoEncoderVP9) vp9Encoder]; 76 } 77 78#if defined(RTC_USE_LIBAOM_AV1_ENCODER) 79 if ([info.name isEqualToString:kRTCVideoCodecAv1Name]) { 80 return [RTC_OBJC_TYPE(RTCVideoEncoderAV1) av1Encoder]; 81 } 82#endif 83 84 return nil; 85} 86 87- (NSArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *)supportedCodecs { 88 NSMutableArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *codecs = 89 [[[self class] supportedCodecs] mutableCopy]; 90 91 NSMutableArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *orderedCodecs = [NSMutableArray array]; 92 NSUInteger index = [codecs indexOfObject:self.preferredCodec]; 93 if (index != NSNotFound) { 94 [orderedCodecs addObject:[codecs objectAtIndex:index]]; 95 [codecs removeObjectAtIndex:index]; 96 } 97 [orderedCodecs addObjectsFromArray:codecs]; 98 99 return [orderedCodecs copy]; 100} 101 102@end 103