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/*
* Copyright (c) 2019 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.
*/
#include "test/mac_capturer.h"
#import "sdk/objc/base/RTCVideoCapturer.h"
#import "sdk/objc/components/capturer/RTCCameraVideoCapturer.h"
#import "sdk/objc/native/api/video_capturer.h"
#import "sdk/objc/native/src/objc_frame_buffer.h"
@interface RTCTestVideoSourceAdapter : NSObject <RTC_OBJC_TYPE (RTCVideoCapturerDelegate)>
@property(nonatomic) webrtc::test::MacCapturer *capturer;
@end
@implementation RTCTestVideoSourceAdapter
@synthesize capturer = _capturer;
- (void)capturer:(RTC_OBJC_TYPE(RTCVideoCapturer) *)capturer
didCaptureVideoFrame:(RTC_OBJC_TYPE(RTCVideoFrame) *)frame {
const int64_t timestamp_us = frame.timeStampNs / rtc::kNumNanosecsPerMicrosec;
rtc::scoped_refptr<webrtc::VideoFrameBuffer> buffer =
rtc::make_ref_counted<webrtc::ObjCFrameBuffer>(frame.buffer);
_capturer->OnFrame(webrtc::VideoFrame::Builder()
.set_video_frame_buffer(buffer)
.set_rotation(webrtc::kVideoRotation_0)
.set_timestamp_us(timestamp_us)
.build());
}
@end
namespace {
AVCaptureDeviceFormat *SelectClosestFormat(AVCaptureDevice *device, size_t width, size_t height) {
NSArray<AVCaptureDeviceFormat *> *formats =
[RTC_OBJC_TYPE(RTCCameraVideoCapturer) supportedFormatsForDevice:device];
AVCaptureDeviceFormat *selectedFormat = nil;
int currentDiff = INT_MAX;
for (AVCaptureDeviceFormat *format in formats) {
CMVideoDimensions dimension = CMVideoFormatDescriptionGetDimensions(format.formatDescription);
int diff =
std::abs((int64_t)width - dimension.width) + std::abs((int64_t)height - dimension.height);
if (diff < currentDiff) {
selectedFormat = format;
currentDiff = diff;
}
}
return selectedFormat;
}
} // namespace
namespace webrtc {
namespace test {
MacCapturer::MacCapturer(size_t width,
size_t height,
size_t target_fps,
size_t capture_device_index) {
RTCTestVideoSourceAdapter *adapter = [[RTCTestVideoSourceAdapter alloc] init];
adapter_ = (__bridge_retained void *)adapter;
adapter.capturer = this;
RTC_OBJC_TYPE(RTCCameraVideoCapturer) *capturer =
[[RTC_OBJC_TYPE(RTCCameraVideoCapturer) alloc] initWithDelegate:adapter];
capturer_ = (__bridge_retained void *)capturer;
AVCaptureDevice *device =
[[RTC_OBJC_TYPE(RTCCameraVideoCapturer) captureDevices] objectAtIndex:capture_device_index];
AVCaptureDeviceFormat *format = SelectClosestFormat(device, width, height);
[capturer startCaptureWithDevice:device format:format fps:target_fps];
}
MacCapturer *MacCapturer::Create(size_t width,
size_t height,
size_t target_fps,
size_t capture_device_index) {
return new MacCapturer(width, height, target_fps, capture_device_index);
}
void MacCapturer::Destroy() {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-variable"
RTCTestVideoSourceAdapter *adapter = (__bridge_transfer RTCTestVideoSourceAdapter *)adapter_;
RTC_OBJC_TYPE(RTCCameraVideoCapturer) *capturer =
(__bridge_transfer RTC_OBJC_TYPE(RTCCameraVideoCapturer) *)capturer_;
[capturer stopCapture];
#pragma clang diagnostic pop
}
MacCapturer::~MacCapturer() {
Destroy();
}
void MacCapturer::OnFrame(const VideoFrame &frame) {
TestVideoCapturer::OnFrame(frame);
}
} // namespace test
} // namespace webrtc
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