abb84b8128
The new RTCVideoSource interface can be used by custom implementations of RTCVideoCapturer. BUG=webrtc:7177 TBR=tommi Review-Url: https://codereview.webrtc.org/2745193002 Cr-Commit-Position: refs/heads/master@{#17409}
71 lines
2.6 KiB
Plaintext
71 lines
2.6 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 "webrtc/sdk/objc/Framework/Classes/objcvideotracksource.h"
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#import "RTCVideoFrame+Private.h"
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#include "webrtc/common_video/include/corevideo_frame_buffer.h"
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namespace webrtc {
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ObjcVideoTrackSource::ObjcVideoTrackSource() {}
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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(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, frame.height, timestamp_us, &adapted_width, &adapted_height,
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&crop_width, &crop_height, &crop_x, &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 = frame.videoBuffer;
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} else if (frame.nativeHandle) {
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// Adapted CVPixelBuffer frame.
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buffer = new rtc::RefCountedObject<CoreVideoFrameBuffer>(
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static_cast<CVPixelBufferRef>(frame.nativeHandle), adapted_width, adapted_height,
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crop_width, crop_height, crop_x, crop_y);
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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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i420_buffer->CropAndScaleFrom(*frame.videoBuffer, 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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webrtc::VideoRotation rotation = static_cast<webrtc::VideoRotation>(frame.rotation);
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if (apply_rotation() && rotation != kVideoRotation_0) {
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buffer = I420Buffer::Rotate(buffer->NativeToI420Buffer(), rotation);
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rotation = kVideoRotation_0;
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}
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OnFrame(webrtc::VideoFrame(buffer, rotation, translated_timestamp_us));
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}
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} // namespace webrtc
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