Source code
Revision control
Copy as Markdown
Other Tools
/*
* Copyright 2016 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 "RTCRtpParameters+Private.h"
#import "RTCRtcpParameters+Private.h"
#import "RTCRtpCodecParameters+Private.h"
#import "RTCRtpEncodingParameters+Private.h"
#import "RTCRtpHeaderExtension+Private.h"
#import "helpers/NSString+StdString.h"
@implementation RTC_OBJC_TYPE (RTCRtpParameters)
@synthesize transactionId = _transactionId;
@synthesize rtcp = _rtcp;
@synthesize headerExtensions = _headerExtensions;
@synthesize encodings = _encodings;
@synthesize codecs = _codecs;
@synthesize degradationPreference = _degradationPreference;
- (instancetype)init {
webrtc::RtpParameters nativeParameters;
return [self initWithNativeParameters:nativeParameters];
}
- (instancetype)initWithNativeParameters:
(const webrtc::RtpParameters &)nativeParameters {
if (self = [super init]) {
_transactionId = [NSString stringForStdString:nativeParameters.transaction_id];
_rtcp =
[[RTC_OBJC_TYPE(RTCRtcpParameters) alloc] initWithNativeParameters:nativeParameters.rtcp];
NSMutableArray *headerExtensions = [[NSMutableArray alloc] init];
for (const auto &headerExtension : nativeParameters.header_extensions) {
[headerExtensions addObject:[[RTC_OBJC_TYPE(RTCRtpHeaderExtension) alloc]
initWithNativeParameters:headerExtension]];
}
_headerExtensions = headerExtensions;
NSMutableArray *encodings = [[NSMutableArray alloc] init];
for (const auto &encoding : nativeParameters.encodings) {
[encodings addObject:[[RTC_OBJC_TYPE(RTCRtpEncodingParameters) alloc]
initWithNativeParameters:encoding]];
}
_encodings = encodings;
NSMutableArray *codecs = [[NSMutableArray alloc] init];
for (const auto &codec : nativeParameters.codecs) {
[codecs
addObject:[[RTC_OBJC_TYPE(RTCRtpCodecParameters) alloc] initWithNativeParameters:codec]];
}
_codecs = codecs;
_degradationPreference = [RTC_OBJC_TYPE(RTCRtpParameters)
degradationPreferenceFromNativeDegradationPreference:nativeParameters
.degradation_preference];
}
return self;
}
- (webrtc::RtpParameters)nativeParameters {
webrtc::RtpParameters parameters;
parameters.transaction_id = [NSString stdStringForString:_transactionId];
parameters.rtcp = [_rtcp nativeParameters];
for (RTC_OBJC_TYPE(RTCRtpHeaderExtension) * headerExtension in _headerExtensions) {
parameters.header_extensions.push_back(headerExtension.nativeParameters);
}
for (RTC_OBJC_TYPE(RTCRtpEncodingParameters) * encoding in _encodings) {
parameters.encodings.push_back(encoding.nativeParameters);
}
for (RTC_OBJC_TYPE(RTCRtpCodecParameters) * codec in _codecs) {
parameters.codecs.push_back(codec.nativeParameters);
}
if (_degradationPreference) {
parameters.degradation_preference = [RTC_OBJC_TYPE(RTCRtpParameters)
nativeDegradationPreferenceFromDegradationPreference:(RTCDegradationPreference)
_degradationPreference.intValue];
}
return parameters;
}
+ (webrtc::DegradationPreference)nativeDegradationPreferenceFromDegradationPreference:
(RTCDegradationPreference)degradationPreference {
switch (degradationPreference) {
case RTCDegradationPreferenceDisabled:
return webrtc::DegradationPreference::DISABLED;
case RTCDegradationPreferenceMaintainFramerate:
return webrtc::DegradationPreference::MAINTAIN_FRAMERATE;
case RTCDegradationPreferenceMaintainResolution:
return webrtc::DegradationPreference::MAINTAIN_RESOLUTION;
case RTCDegradationPreferenceBalanced:
return webrtc::DegradationPreference::BALANCED;
}
}
+ (NSNumber *)degradationPreferenceFromNativeDegradationPreference:
(absl::optional<webrtc::DegradationPreference>)nativeDegradationPreference {
if (!nativeDegradationPreference.has_value()) {
return nil;
}
switch (*nativeDegradationPreference) {
case webrtc::DegradationPreference::DISABLED:
return @(RTCDegradationPreferenceDisabled);
case webrtc::DegradationPreference::MAINTAIN_FRAMERATE:
return @(RTCDegradationPreferenceMaintainFramerate);
case webrtc::DegradationPreference::MAINTAIN_RESOLUTION:
return @(RTCDegradationPreferenceMaintainResolution);
case webrtc::DegradationPreference::BALANCED:
return @(RTCDegradationPreferenceBalanced);
}
}
@end