blob: 6cfa5623c4b3df572405eb2e48789a802c92c7fe [file] [log] [blame]
/*
* libjingle
* Copyright 2014 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(__has_feature) || !__has_feature(objc_arc)
#error "This file requires ARC support."
#endif
#import "RTCDataChannel+Internal.h"
#include <memory>
#include "webrtc/api/datachannelinterface.h"
namespace webrtc {
class RTCDataChannelObserver : public DataChannelObserver {
public:
RTCDataChannelObserver(RTCDataChannel* channel) { _channel = channel; }
void OnStateChange() override {
[_channel.delegate channelDidChangeState:_channel];
}
void OnBufferedAmountChange(uint64_t previousAmount) override {
RTCDataChannel* channel = _channel;
id<RTCDataChannelDelegate> delegate = channel.delegate;
if ([delegate
respondsToSelector:@selector(channel:didChangeBufferedAmount:)]) {
[delegate channel:channel didChangeBufferedAmount:previousAmount];
}
}
void OnMessage(const DataBuffer& buffer) override {
if (!_channel.delegate) {
return;
}
RTCDataBuffer* dataBuffer =
[[RTCDataBuffer alloc] initWithDataBuffer:buffer];
[_channel.delegate channel:_channel didReceiveMessageWithBuffer:dataBuffer];
}
private:
__weak RTCDataChannel* _channel;
};
}
// TODO(henrika): move to shared location.
// See https://code.google.com/p/webrtc/issues/detail?id=4773 for details.
NSString* NSStringFromStdString(const std::string& stdString) {
// std::string may contain null termination character so we construct
// using length.
return [[NSString alloc] initWithBytes:stdString.data()
length:stdString.length()
encoding:NSUTF8StringEncoding];
}
std::string StdStringFromNSString(NSString* nsString) {
NSData* charData = [nsString dataUsingEncoding:NSUTF8StringEncoding];
return std::string(reinterpret_cast<const char*>([charData bytes]),
[charData length]);
}
@implementation RTCDataChannelInit {
webrtc::DataChannelInit _dataChannelInit;
}
- (BOOL)isOrdered {
return _dataChannelInit.ordered;
}
- (void)setIsOrdered:(BOOL)isOrdered {
_dataChannelInit.ordered = isOrdered;
}
- (NSInteger)maxRetransmitTime {
return _dataChannelInit.maxRetransmitTime;
}
- (void)setMaxRetransmitTime:(NSInteger)maxRetransmitTime {
_dataChannelInit.maxRetransmitTime = maxRetransmitTime;
}
- (NSInteger)maxRetransmits {
return _dataChannelInit.maxRetransmits;
}
- (void)setMaxRetransmits:(NSInteger)maxRetransmits {
_dataChannelInit.maxRetransmits = maxRetransmits;
}
- (NSString*)protocol {
return NSStringFromStdString(_dataChannelInit.protocol);
}
- (void)setProtocol:(NSString*)protocol {
_dataChannelInit.protocol = StdStringFromNSString(protocol);
}
- (BOOL)isNegotiated {
return _dataChannelInit.negotiated;
}
- (void)setIsNegotiated:(BOOL)isNegotiated {
_dataChannelInit.negotiated = isNegotiated;
}
- (NSInteger)streamId {
return _dataChannelInit.id;
}
- (void)setStreamId:(NSInteger)streamId {
_dataChannelInit.id = streamId;
}
@end
@implementation RTCDataChannelInit (Internal)
- (const webrtc::DataChannelInit*)dataChannelInit {
return &_dataChannelInit;
}
@end
@implementation RTCDataBuffer {
std::unique_ptr<webrtc::DataBuffer> _dataBuffer;
}
- (instancetype)initWithData:(NSData*)data isBinary:(BOOL)isBinary {
NSAssert(data, @"data cannot be nil");
if (self = [super init]) {
rtc::CopyOnWriteBuffer buffer(
reinterpret_cast<const uint8_t*>([data bytes]), [data length]);
_dataBuffer.reset(new webrtc::DataBuffer(buffer, isBinary));
}
return self;
}
- (NSData*)data {
return [NSData dataWithBytes:_dataBuffer->data.data()
length:_dataBuffer->data.size()];
}
- (BOOL)isBinary {
return _dataBuffer->binary;
}
@end
@implementation RTCDataBuffer (Internal)
- (instancetype)initWithDataBuffer:(const webrtc::DataBuffer&)buffer {
if (self = [super init]) {
_dataBuffer.reset(new webrtc::DataBuffer(buffer));
}
return self;
}
- (const webrtc::DataBuffer*)dataBuffer {
return _dataBuffer.get();
}
@end
@implementation RTCDataChannel {
rtc::scoped_refptr<webrtc::DataChannelInterface> _dataChannel;
std::unique_ptr<webrtc::RTCDataChannelObserver> _observer;
BOOL _isObserverRegistered;
}
- (void)dealloc {
// Handles unregistering the observer properly. We need to do this because
// there may still be other references to the underlying data channel.
self.delegate = nil;
}
- (NSString*)label {
return NSStringFromStdString(_dataChannel->label());
}
- (BOOL)isReliable {
return _dataChannel->reliable();
}
- (BOOL)isOrdered {
return _dataChannel->ordered();
}
- (NSUInteger)maxRetransmitTimeMs {
return _dataChannel->maxRetransmitTime();
}
- (NSUInteger)maxRetransmits {
return _dataChannel->maxRetransmits();
}
- (NSString*)protocol {
return NSStringFromStdString(_dataChannel->protocol());
}
- (BOOL)isNegotiated {
return _dataChannel->negotiated();
}
- (NSInteger)streamId {
return _dataChannel->id();
}
- (RTCDataChannelState)state {
switch (_dataChannel->state()) {
case webrtc::DataChannelInterface::DataState::kConnecting:
return kRTCDataChannelStateConnecting;
case webrtc::DataChannelInterface::DataState::kOpen:
return kRTCDataChannelStateOpen;
case webrtc::DataChannelInterface::DataState::kClosing:
return kRTCDataChannelStateClosing;
case webrtc::DataChannelInterface::DataState::kClosed:
return kRTCDataChannelStateClosed;
}
}
- (NSUInteger)bufferedAmount {
return _dataChannel->buffered_amount();
}
- (void)setDelegate:(id<RTCDataChannelDelegate>)delegate {
if (_delegate == delegate) {
return;
}
if (_isObserverRegistered) {
_dataChannel->UnregisterObserver();
_isObserverRegistered = NO;
}
_delegate = delegate;
if (_delegate) {
_dataChannel->RegisterObserver(_observer.get());
_isObserverRegistered = YES;
}
}
- (void)close {
_dataChannel->Close();
}
- (BOOL)sendData:(RTCDataBuffer*)data {
return _dataChannel->Send(*data.dataBuffer);
}
@end
@implementation RTCDataChannel (Internal)
- (instancetype)initWithDataChannel:
(rtc::scoped_refptr<webrtc::DataChannelInterface>)
dataChannel {
NSAssert(dataChannel != NULL, @"dataChannel cannot be NULL");
if (self = [super init]) {
_dataChannel = dataChannel;
_observer.reset(new webrtc::RTCDataChannelObserver(self));
}
return self;
}
- (rtc::scoped_refptr<webrtc::DataChannelInterface>)dataChannel {
return _dataChannel;
}
@end