a0349c138d
Initial CL for this effort, with a working RTCVideoEncoder/Decoder for H264
(wrapping the VideoToolbox codec).
Some notes / things left to do:
- There are some hard-coded references to codec types that are supported by
webrtc::VideoCodec, cricket::VideoCodec, webrtc::CodecSpecificInfo etc
since we need to convert to/from these types in ObjCVideoEncoder/Decoder.
These types would need to be more codec agnostic to avoid this.
- Most interfaces are borrowed from the design document for injectable
codecs in Android. Some data in the corresponding C++ classes is discarded
when converting to the Obj-C version, since it has fewer fields. I have not
verified whether all data that we do keep is needed, or whether we might be
losing anything useful in these conversions.
- Implement the VideoToolbox codec code directly in the RTCVideoEncoderH264
classes, instead of wrapping webrtc::H264VideoToolboxEncoder / decoder.
Eliminates converting between ObjC/C++ types outside the ObjCVideoEncoder/
Decoder wrapper classes.
- List the injected codec factory's supported codecs in the list of codecs in
AppRTCMobile.
BUG=webrtc:7924
R=magjed@webrtc.org
Review-Url: https://codereview.webrtc.org/2966023002 .
Cr-Commit-Position: refs/heads/master@{#18928}
48 lines
1.3 KiB
Objective-C
48 lines
1.3 KiB
Objective-C
/*
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* Copyright 2017 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 <Foundation/Foundation.h>
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#import <WebRTC/RTCMacros.h>
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#import <WebRTC/RTCVideoCodecFactory.h>
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/** Class for H264 specific config. */
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typedef NS_ENUM(NSUInteger, RTCH264PacketizationMode) {
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NonInterleaved = 0, // Mode 1 - STAP-A, FU-A is allowed
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SingleNalUnit // Mode 0 - only single NALU allowed
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};
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RTC_EXPORT
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@interface RTCCodecSpecificInfoH264 : NSObject<RTCCodecSpecificInfo>
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@property(nonatomic, assign) RTCH264PacketizationMode packetizationMode;
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@end
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/** Encoder. */
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RTC_EXPORT
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@interface RTCVideoEncoderH264 : NSObject<RTCVideoEncoder>
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@end
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/** Decoder. */
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RTC_EXPORT
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@interface RTCVideoDecoderH264 : NSObject<RTCVideoDecoder>
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@end
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/** Encoder factory. */
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RTC_EXPORT
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@interface RTCVideoEncoderFactoryH264 : NSObject<RTCVideoEncoderFactory>
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@end
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/** Decoder factory. */
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RTC_EXPORT
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@interface RTCVideoDecoderFactoryH264 : NSObject<RTCVideoDecoderFactory>
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@end
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