a81e9c82fc
This CL introduced 2 new macros that affect the WebRTC OBJC API symbols: - RTC_OBJC_TYPE_PREFIX: Macro used to prepend a prefix to the API types that are exported with RTC_OBJC_EXPORT. Clients can patch the definition of this macro locally and build WebRTC.framework with their own prefix in case symbol clashing is a problem. This macro must only be defined by changing the value in sdk/objc/base/RTCMacros.h and not on via compiler flag to ensure it has a unique value. - RCT_OBJC_TYPE: Macro used internally to reference API types. Declaring an API type without using this macro will not include the declared type in the set of types that will be affected by the configurable RTC_OBJC_TYPE_PREFIX. Manual changes: https://webrtc-review.googlesource.com/c/src/+/173781/5..10 The auto-generated changes in PS#5 have been done with: https://webrtc-review.googlesource.com/c/src/+/174061. Bug: None Change-Id: I0d54ca94db764fb3b6cb4365873f79e14cd879b8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173781 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31153}
129 lines
4.3 KiB
Plaintext
129 lines
4.3 KiB
Plaintext
/*
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* Copyright (c) 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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#include "sdk/objc/native/src/objc_video_track_source.h"
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#import "base/RTCVideoFrame.h"
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#import "base/RTCVideoFrameBuffer.h"
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#import "components/video_frame_buffer/RTCCVPixelBuffer.h"
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#include "api/video/i420_buffer.h"
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#include "sdk/objc/native/src/objc_frame_buffer.h"
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@interface RTCObjCVideoSourceAdapter ()
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@property(nonatomic) webrtc::ObjCVideoTrackSource *objCVideoTrackSource;
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@end
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@implementation RTCObjCVideoSourceAdapter
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@synthesize objCVideoTrackSource = _objCVideoTrackSource;
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- (void)capturer:(RTC_OBJC_TYPE(RTCVideoCapturer) *)capturer
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didCaptureVideoFrame:(RTC_OBJC_TYPE(RTCVideoFrame) *)frame {
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_objCVideoTrackSource->OnCapturedFrame(frame);
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}
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@end
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namespace webrtc {
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ObjCVideoTrackSource::ObjCVideoTrackSource()
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: AdaptedVideoTrackSource(/* required resolution alignment */ 2) {}
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ObjCVideoTrackSource::ObjCVideoTrackSource(RTCObjCVideoSourceAdapter *adapter) : adapter_(adapter) {
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adapter_.objCVideoTrackSource = this;
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}
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bool ObjCVideoTrackSource::is_screencast() const {
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return false;
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}
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absl::optional<bool> ObjCVideoTrackSource::needs_denoising() const {
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return false;
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}
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MediaSourceInterface::SourceState ObjCVideoTrackSource::state() const {
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return SourceState::kLive;
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}
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bool ObjCVideoTrackSource::remote() const {
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return false;
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}
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void ObjCVideoTrackSource::OnOutputFormatRequest(int width, int height, int fps) {
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cricket::VideoFormat format(width, height, cricket::VideoFormat::FpsToInterval(fps), 0);
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video_adapter()->OnOutputFormatRequest(format);
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}
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void ObjCVideoTrackSource::OnCapturedFrame(RTC_OBJC_TYPE(RTCVideoFrame) * frame) {
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const int64_t timestamp_us = frame.timeStampNs / rtc::kNumNanosecsPerMicrosec;
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const int64_t translated_timestamp_us =
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timestamp_aligner_.TranslateTimestamp(timestamp_us, rtc::TimeMicros());
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int adapted_width;
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int adapted_height;
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int crop_width;
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int crop_height;
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int crop_x;
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int crop_y;
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if (!AdaptFrame(frame.width,
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frame.height,
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timestamp_us,
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&adapted_width,
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&adapted_height,
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&crop_width,
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&crop_height,
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&crop_x,
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&crop_y)) {
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return;
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}
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rtc::scoped_refptr<VideoFrameBuffer> buffer;
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if (adapted_width == frame.width && adapted_height == frame.height) {
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// No adaption - optimized path.
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buffer = new rtc::RefCountedObject<ObjCFrameBuffer>(frame.buffer);
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} else if ([frame.buffer isKindOfClass:[RTC_OBJC_TYPE(RTCCVPixelBuffer) class]]) {
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// Adapted CVPixelBuffer frame.
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RTC_OBJC_TYPE(RTCCVPixelBuffer) *rtcPixelBuffer =
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(RTC_OBJC_TYPE(RTCCVPixelBuffer) *)frame.buffer;
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buffer = new rtc::RefCountedObject<ObjCFrameBuffer>([[RTC_OBJC_TYPE(RTCCVPixelBuffer) alloc]
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initWithPixelBuffer:rtcPixelBuffer.pixelBuffer
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adaptedWidth:adapted_width
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adaptedHeight:adapted_height
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cropWidth:crop_width
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cropHeight:crop_height
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cropX:crop_x + rtcPixelBuffer.cropX
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cropY:crop_y + rtcPixelBuffer.cropY]);
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} else {
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// Adapted I420 frame.
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// TODO(magjed): Optimize this I420 path.
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rtc::scoped_refptr<I420Buffer> i420_buffer = I420Buffer::Create(adapted_width, adapted_height);
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buffer = new rtc::RefCountedObject<ObjCFrameBuffer>(frame.buffer);
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i420_buffer->CropAndScaleFrom(*buffer->ToI420(), crop_x, crop_y, crop_width, crop_height);
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buffer = i420_buffer;
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}
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// Applying rotation is only supported for legacy reasons and performance is
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// not critical here.
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VideoRotation rotation = static_cast<VideoRotation>(frame.rotation);
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if (apply_rotation() && rotation != kVideoRotation_0) {
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buffer = I420Buffer::Rotate(*buffer->ToI420(), rotation);
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rotation = kVideoRotation_0;
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}
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OnFrame(VideoFrame::Builder()
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.set_video_frame_buffer(buffer)
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.set_rotation(rotation)
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.set_timestamp_us(translated_timestamp_us)
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.build());
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}
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} // namespace webrtc
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