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Add an example app for iOS native API.

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Demonstrates how to use the iOS native API to wrap components into
C++ classes.

This CL also introduces a native API wrapper for the capturer.

The C++ code is forked from the corresponding CL for Android at
https://webrtc-review.googlesource.com/c/src/+/60540

Bug: webrtc:8832
Change-Id: I12d9f30e701c0222628e329218f6d5bfca26e6e0
Reviewed-on: https://webrtc-review.googlesource.com/61422
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22484}
This commit is contained in:
Anders Carlsson
2018-03-15 09:41:03 +01:00
committed by Commit Bot
parent 8cf0a87bc3
commit 7311918269
18 changed files with 817 additions and 5 deletions
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11
sdk/objc/Framework/Native/src/objc_video_track_source.h
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@ -11,17 +11,23 @@
#ifndef SDK_OBJC_FRAMEWORK_CLASSES_VIDEO_OBJCVIDEOTRACKSOURCE_H_
#define SDK_OBJC_FRAMEWORK_CLASSES_VIDEO_OBJCVIDEOTRACKSOURCE_H_
#import "WebRTC/RTCVideoCapturer.h"
#include "WebRTC/RTCMacros.h"
#include "media/base/adaptedvideotracksource.h"
#include "rtc_base/timestampaligner.h"
RTC_FWD_DECL_OBJC_CLASS(RTCVideoFrame);
@interface RTCObjCVideoSourceAdapter : NSObject<RTCVideoCapturerDelegate>
@end
namespace webrtc {
class ObjCVideoTrackSource : public rtc::AdaptedVideoTrackSource {
public:
ObjCVideoTrackSource();
explicit ObjCVideoTrackSource(RTCObjCVideoSourceAdapter* adapter);
// This class can not be used for implementing screen casting. Hopefully, this
// function will be removed before we add that to iOS/Mac.
@ -36,13 +42,16 @@ class ObjCVideoTrackSource : public rtc::AdaptedVideoTrackSource {
bool remote() const override { return false; }
// Called by RTCVideoSource.
void OnCapturedFrame(RTCVideoFrame* frame);
// Called by RTCVideoSource.
void OnOutputFormatRequest(int width, int height, int fps);
private:
rtc::VideoBroadcaster broadcaster_;
rtc::TimestampAligner timestamp_aligner_;
RTCObjCVideoSourceAdapter* adapter_;
};
} // namespace webrtc

18
sdk/objc/Framework/Native/src/objc_video_track_source.mm
View File

@ -16,10 +16,28 @@
#include "api/video/i420_buffer.h"
#include "sdk/objc/Framework/Native/src/objc_frame_buffer.h"
@interface RTCObjCVideoSourceAdapter ()
@property(nonatomic) webrtc::ObjCVideoTrackSource *objCVideoTrackSource;
@end
@implementation RTCObjCVideoSourceAdapter
@synthesize objCVideoTrackSource = _objCVideoTrackSource;
- (void)capturer:(RTCVideoCapturer *)capturer didCaptureVideoFrame:(RTCVideoFrame *)frame {
_objCVideoTrackSource->OnCapturedFrame(frame);
}
@end
namespace webrtc {
ObjCVideoTrackSource::ObjCVideoTrackSource() {}
ObjCVideoTrackSource::ObjCVideoTrackSource(RTCObjCVideoSourceAdapter *adapter) : adapter_(adapter) {
adapter_.objCVideoTrackSource = this;
}
void ObjCVideoTrackSource::OnOutputFormatRequest(int width, int height, int fps) {
cricket::VideoFormat format(width, height, cricket::VideoFormat::FpsToInterval(fps), 0);
video_adapter()->OnOutputFormatRequest(format);