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| 1 /* | |
| 2 * Copyright 2016 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 "RTCRtpCodecParameters+Private.h" | |
| 12 | |
| 13 #import "NSString+StdString.h" | |
| 14 #import "WebRTC/RTCMediaStreamTrack.h" // For "kind" strings. | |
| 15 | |
| 16 #include "webrtc/base/checks.h" | |
| 17 #include "webrtc/media/base/mediaconstants.h" | |
| 18 | |
| 19 const NSString * const kRTCRtxCodecName = @(cricket::kRtxCodecName); | |
| 20 const NSString * const kRTCRedCodecName = @(cricket::kRedCodecName); | |
| 21 const NSString * const kRTCUlpfecCodecName = @(cricket::kUlpfecCodecName); | |
| 22 const NSString * const kRTCFlexfecCodecName = @(cricket::kFlexfecCodecName); | |
| 23 const NSString * const kRTCOpusCodecName = @(cricket::kOpusCodecName); | |
| 24 const NSString * const kRTCIsacCodecName = @(cricket::kIsacCodecName); | |
| 25 const NSString * const kRTCL16CodecName = @(cricket::kL16CodecName); | |
| 26 const NSString * const kRTCG722CodecName = @(cricket::kG722CodecName); | |
| 27 const NSString * const kRTCIlbcCodecName = @(cricket::kIlbcCodecName); | |
| 28 const NSString * const kRTCPcmuCodecName = @(cricket::kPcmuCodecName); | |
| 29 const NSString * const kRTCPcmaCodecName = @(cricket::kPcmaCodecName); | |
| 30 const NSString * const kRTCDtmfCodecName = @(cricket::kDtmfCodecName); | |
| 31 const NSString * const kRTCComfortNoiseCodecName = | |
| 32 @(cricket::kComfortNoiseCodecName); | |
| 33 const NSString * const kVp8CodecName = @(cricket::kVp8CodecName); | |
| 34 const NSString * const kVp9CodecName = @(cricket::kVp9CodecName); | |
| 35 const NSString * const kH264CodecName = @(cricket::kH264CodecName); | |
| 36 | |
| 37 @implementation RTCRtpCodecParameters | |
| 38 | |
| 39 @synthesize payloadType = _payloadType; | |
| 40 @synthesize name = _name; | |
| 41 @synthesize kind = _kind; | |
| 42 @synthesize clockRate = _clockRate; | |
| 43 @synthesize numChannels = _numChannels; | |
| 44 | |
| 45 - (instancetype)init { | |
| 46 return [super init]; | |
| 47 } | |
| 48 | |
| 49 - (instancetype)initWithNativeParameters: | |
| 50 (const webrtc::RtpCodecParameters &)nativeParameters { | |
| 51 if (self = [self init]) { | |
| 52 _payloadType = nativeParameters.payload_type; | |
| 53 _name = [NSString stringForStdString:nativeParameters.name]; | |
| 54 switch (nativeParameters.kind) { | |
| 55 case cricket::MEDIA_TYPE_AUDIO: | |
| 56 _kind = kRTCMediaStreamTrackKindAudio; | |
| 57 break; | |
| 58 case cricket::MEDIA_TYPE_VIDEO: | |
| 59 _kind = kRTCMediaStreamTrackKindVideo; | |
| 60 break; | |
| 61 case cricket::MEDIA_TYPE_DATA: | |
| 62 RTC_NOTREACHED(); | |
| 63 break; | |
| 64 } | |
| 65 if (nativeParameters.clock_rate) { | |
| 66 _clockRate = [NSNumber numberWithInt:*nativeParameters.clock_rate]; | |
| 67 } | |
| 68 if (nativeParameters.num_channels) { | |
| 69 _numChannels = [NSNumber numberWithInt:*nativeParameters.num_channels]; | |
| 70 } | |
| 71 } | |
| 72 return self; | |
| 73 } | |
| 74 | |
| 75 - (webrtc::RtpCodecParameters)nativeParameters { | |
| 76 webrtc::RtpCodecParameters parameters; | |
| 77 parameters.payload_type = _payloadType; | |
| 78 parameters.name = [NSString stdStringForString:_name]; | |
| 79 // NSString pointer comparison is safe here since "kind" is readonly and only | |
| 80 // populated above. | |
| 81 if (_kind == kRTCMediaStreamTrackKindAudio) { | |
| 82 parameters.kind = cricket::MEDIA_TYPE_AUDIO; | |
| 83 } else if (_kind == kRTCMediaStreamTrackKindVideo) { | |
| 84 parameters.kind = cricket::MEDIA_TYPE_VIDEO; | |
| 85 } else { | |
| 86 RTC_NOTREACHED(); | |
| 87 } | |
| 88 if (_clockRate != nil) { | |
| 89 parameters.clock_rate = rtc::Optional<int>(_clockRate.intValue); | |
| 90 } | |
| 91 if (_numChannels != nil) { | |
| 92 parameters.num_channels = rtc::Optional<int>(_numChannels.intValue); | |
| 93 } | |
| 94 return parameters; | |
| 95 } | |
| 96 | |
| 97 @end | |
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