97 lines
2.6 KiB
Text
97 lines
2.6 KiB
Text
/*
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* Copyright 2024 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import "RTCRtpSource.h"
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#import "RTCRtpSource+Private.h"
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#import "base/RTCLogging.h"
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#import "helpers/NSString+StdString.h"
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#include <optional>
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#include "api/rtp_parameters.h"
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#include "api/scoped_refptr.h"
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#include "api/transport/rtp/rtp_source.h"
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@implementation RTC_OBJC_TYPE (RTCRtpSource) {
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std::optional<webrtc::RtpSource> _nativeRtpSource;
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}
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- (uint32_t)sourceId {
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return _nativeRtpSource.value().source_id();
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}
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- (CFTimeInterval)timestampUs {
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return _nativeRtpSource.value().timestamp().us();
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}
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- (uint32_t)rtpTimestamp {
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return _nativeRtpSource.value().rtp_timestamp();
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}
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- (RTCRtpSourceType)sourceType {
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return [RTC_OBJC_TYPE(RTCRtpSource)
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rtpSourceTypeForNativeRtpSourceType:_nativeRtpSource.value()
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.source_type()];
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}
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- (NSNumber *)audioLevel {
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std::optional<uint8_t> level = _nativeRtpSource.value().audio_level();
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if (!level.has_value()) {
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return nil;
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}
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// Converted according to equation defined here:
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// https://w3c.github.io/webrtc-pc/#dom-rtcrtpcontributingsource-audiolevel
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uint8_t rfcLevel = level.value();
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if (rfcLevel > 127u) {
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rfcLevel = 127u;
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}
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if (rfcLevel == 127u) {
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return @(0.0);
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}
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return @(std::pow(10.0, -(double)rfcLevel / 20.0));
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}
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- (NSString *)description {
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return [NSString
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stringWithFormat:
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@"RTC_OBJC_TYPE(RTCRtpSource) {\n sourceId: %d, sourceType: %@\n}",
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self.sourceId,
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[RTC_OBJC_TYPE(RTCRtpSource) stringForRtpSourceType:self.sourceType]];
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}
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- (instancetype)initWithNativeRtpSource:
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(const webrtc::RtpSource &)nativeRtpSource {
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self = [super init];
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if (self) {
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_nativeRtpSource = nativeRtpSource;
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}
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return self;
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}
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+ (RTCRtpSourceType)rtpSourceTypeForNativeRtpSourceType:
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(webrtc::RtpSourceType)nativeRtpSourceType {
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switch (nativeRtpSourceType) {
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case webrtc::RtpSourceType::SSRC:
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return RTCRtpSourceTypeSSRC;
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case webrtc::RtpSourceType::CSRC:
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return RTCRtpSourceTypeCSRC;
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}
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}
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+ (NSString *)stringForRtpSourceType:(RTCRtpSourceType)mediaType {
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switch (mediaType) {
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case RTCRtpSourceTypeSSRC:
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return @"SSRC";
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case RTCRtpSourceTypeCSRC:
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return @"CSRC";
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}
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}
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@end
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