webrtc/examples/objc/AppRTCMobile/ARDVideoEncoderFactory.m
Anders Carlsson 6bf43d2818 AppRTCMobile iOS: Use video encoder factory to manage codec preference.
List codecs from factory in settings, select by changing order in factory.

Bug: webrtc:7925
Change-Id: If3c45e56713104c88705c67560325d002e6d6700
Reviewed-on: https://webrtc-review.googlesource.com/3720
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20312}
2017-10-16 13:37:37 +00:00

75 lines
2.6 KiB
Objective-C

/*
* Copyright 2017 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 "ARDVideoEncoderFactory.h"
#import "ARDSettingsModel.h"
#import "WebRTC/RTCVideoCodecH264.h"
#import "WebRTC/RTCVideoEncoderVP8.h"
#import "WebRTC/RTCVideoEncoderVP9.h"
static NSString *kLevel31ConstrainedHigh = @"640c1f";
static NSString *kLevel31ConstrainedBaseline = @"42e01f";
@implementation ARDVideoEncoderFactory
@synthesize preferredCodec;
- (id<RTCVideoEncoder>)createEncoder:(RTCVideoCodecInfo *)info {
if ([info.name isEqualToString:@"H264"]) {
return [[RTCVideoEncoderH264 alloc] initWithCodecInfo:info];
} else if ([info.name isEqualToString:@"VP8"]) {
return [RTCVideoEncoderVP8 vp8Encoder];
} else if ([info.name isEqualToString:@"VP9"]) {
return [RTCVideoEncoderVP9 vp9Encoder];
}
return nil;
}
- (NSArray<RTCVideoCodecInfo *> *)supportedCodecs {
NSMutableArray<RTCVideoCodecInfo *> *codecs = [NSMutableArray array];
NSDictionary<NSString *, NSString *> *constrainedHighParams = @{
@"profile-level-id" : kLevel31ConstrainedHigh,
@"level-asymmetry-allowed" : @"1",
@"packetization-mode" : @"1",
};
RTCVideoCodecInfo *constrainedHighInfo =
[[RTCVideoCodecInfo alloc] initWithName:@"H264" parameters:constrainedHighParams];
[codecs addObject:constrainedHighInfo];
NSDictionary<NSString *, NSString *> *constrainedBaselineParams = @{
@"profile-level-id" : kLevel31ConstrainedBaseline,
@"level-asymmetry-allowed" : @"1",
@"packetization-mode" : @"1",
};
RTCVideoCodecInfo *constrainedBaselineInfo =
[[RTCVideoCodecInfo alloc] initWithName:@"H264" parameters:constrainedBaselineParams];
[codecs addObject:constrainedBaselineInfo];
RTCVideoCodecInfo *vp8Info = [[RTCVideoCodecInfo alloc] initWithName:@"VP8" parameters:nil];
[codecs addObject:vp8Info];
RTCVideoCodecInfo *vp9Info = [[RTCVideoCodecInfo alloc] initWithName:@"VP9" parameters:nil];
[codecs addObject:vp9Info];
NSMutableArray<RTCVideoCodecInfo *> *orderedCodecs = [NSMutableArray array];
NSUInteger index = [codecs indexOfObject:self.preferredCodec];
if (index != NSNotFound) {
[orderedCodecs addObject:[codecs objectAtIndex:index]];
[codecs removeObjectAtIndex:index];
}
[orderedCodecs addObjectsFromArray:codecs];
return [orderedCodecs copy];
}
@end