mediapipe/mediapipe/objc/CGImageRefUtils.mm
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2021-02-27 03:30:05 -05:00

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// Copyright 2019 The MediaPipe Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#import "CGImageRefUtils.h"
#import <Foundation/Foundation.h>
#import "mediapipe/objc/CFHolder.h"
#import "mediapipe/objc/NSError+util_status.h"
#import "mediapipe/objc/util.h"
#include "mediapipe/framework/port/status.h"
CGImageRef CreateCGImageFromCVPixelBuffer(CVPixelBufferRef imageBuffer, NSError **error) {
CFHolder<CGImageRef> cg_image_holder;
absl::Status status = CreateCGImageFromCVPixelBuffer(imageBuffer, &cg_image_holder);
if (!status.ok()) {
*error = [NSError gus_errorWithStatus:status];
return nil;
}
CGImageRef cg_image = *cg_image_holder;
CGImageRetain(cg_image);
return cg_image;
}
CVPixelBufferRef CreateCVPixelBufferFromCGImage(CGImageRef image, NSError **error) {
CFHolder<CVPixelBufferRef> pixel_buffer_holder;
absl::Status status = CreateCVPixelBufferFromCGImage(image, &pixel_buffer_holder);
if (!status.ok()) {
*error = [NSError gus_errorWithStatus:status];
return nil;
}
CVPixelBufferRef pixel_buffer = *pixel_buffer_holder;
CVPixelBufferRetain(pixel_buffer);
return pixel_buffer;
}