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/*
* Copyright 2015 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 "RTCVideoTrack+Private.h"
#import "RTCMediaStreamTrack+Private.h"
#import "RTCPeerConnectionFactory+Private.h"
#import "RTCVideoSource+Private.h"
#import "api/RTCVideoRendererAdapter+Private.h"
#import "helpers/NSString+StdString.h"
@implementation RTC_OBJC_TYPE (RTCVideoTrack) {
rtc::Thread *_workerThread;
NSMutableArray *_adapters /* accessed on _workerThread */;
}
@synthesize source = _source;
- (instancetype)initWithFactory:(RTC_OBJC_TYPE(RTCPeerConnectionFactory) *)factory
source:(RTC_OBJC_TYPE(RTCVideoSource) *)source
trackId:(NSString *)trackId {
NSParameterAssert(factory);
NSParameterAssert(source);
NSParameterAssert(trackId.length);
std::string nativeId = [NSString stdStringForString:trackId];
rtc::scoped_refptr<webrtc::VideoTrackInterface> track =
factory.nativeFactory->CreateVideoTrack(source.nativeVideoSource, nativeId);
if (self = [self initWithFactory:factory nativeTrack:track type:RTCMediaStreamTrackTypeVideo]) {
_source = source;
}
return self;
}
- (instancetype)initWithFactory:(RTC_OBJC_TYPE(RTCPeerConnectionFactory) *)factory
nativeTrack:
(rtc::scoped_refptr<webrtc::MediaStreamTrackInterface>)nativeMediaTrack
type:(RTCMediaStreamTrackType)type {
NSParameterAssert(factory);
NSParameterAssert(nativeMediaTrack);
NSParameterAssert(type == RTCMediaStreamTrackTypeVideo);
if (self = [super initWithFactory:factory nativeTrack:nativeMediaTrack type:type]) {
_adapters = [NSMutableArray array];
_workerThread = factory.workerThread;
}
return self;
}
- (void)dealloc {
for (RTCVideoRendererAdapter *adapter in _adapters) {
self.nativeVideoTrack->RemoveSink(adapter.nativeVideoRenderer);
}
}
- (RTC_OBJC_TYPE(RTCVideoSource) *)source {
if (!_source) {
rtc::scoped_refptr<webrtc::VideoTrackSourceInterface> source(
self.nativeVideoTrack->GetSource());
if (source) {
_source = [[RTC_OBJC_TYPE(RTCVideoSource) alloc] initWithFactory:self.factory
nativeVideoSource:source];
}
}
return _source;
}
- (void)addRenderer:(id<RTC_OBJC_TYPE(RTCVideoRenderer)>)renderer {
if (!_workerThread->IsCurrent()) {
_workerThread->BlockingCall([renderer, self] { [self addRenderer:renderer]; });
return;
}
// Make sure we don't have this renderer yet.
for (RTCVideoRendererAdapter *adapter in _adapters) {
if (adapter.videoRenderer == renderer) {
RTC_LOG(LS_INFO) << "|renderer| is already attached to this track";
return;
}
}
// Create a wrapper that provides a native pointer for us.
RTCVideoRendererAdapter* adapter =
[[RTCVideoRendererAdapter alloc] initWithNativeRenderer:renderer];
[_adapters addObject:adapter];
self.nativeVideoTrack->AddOrUpdateSink(adapter.nativeVideoRenderer,
rtc::VideoSinkWants());
}
- (void)removeRenderer:(id<RTC_OBJC_TYPE(RTCVideoRenderer)>)renderer {
if (!_workerThread->IsCurrent()) {
_workerThread->BlockingCall([renderer, self] { [self removeRenderer:renderer]; });
return;
}
__block NSUInteger indexToRemove = NSNotFound;
[_adapters enumerateObjectsUsingBlock:^(RTCVideoRendererAdapter *adapter,
NSUInteger idx,
BOOL *stop) {
if (adapter.videoRenderer == renderer) {
indexToRemove = idx;
*stop = YES;
}
}];
if (indexToRemove == NSNotFound) {
RTC_LOG(LS_INFO) << "removeRenderer called with a renderer that has not been previously added";
return;
}
RTCVideoRendererAdapter *adapterToRemove =
[_adapters objectAtIndex:indexToRemove];
self.nativeVideoTrack->RemoveSink(adapterToRemove.nativeVideoRenderer);
[_adapters removeObjectAtIndex:indexToRemove];
}
#pragma mark - Private
- (rtc::scoped_refptr<webrtc::VideoTrackInterface>)nativeVideoTrack {
return rtc::scoped_refptr<webrtc::VideoTrackInterface>(
static_cast<webrtc::VideoTrackInterface *>(self.nativeTrack.get()));
}
@end