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/*
* Copyright 2018 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.
*/
#import <Foundation/Foundation.h>
#import <XCTest/XCTest.h>
#import "components/video_frame_buffer/RTCCVPixelBuffer.h"
#import "api/video_frame_buffer/RTCNativeI420Buffer+Private.h"
#import "base/RTCVideoFrame.h"
#import "base/RTCVideoFrameBuffer.h"
#import "frame_buffer_helpers.h"
#include "common_video/libyuv/include/webrtc_libyuv.h"
#include "third_party/libyuv/include/libyuv.h"
namespace {
struct ToI420WithCropAndScaleSetting {
int inputWidth;
int inputHeight;
int offsetX;
int offsetY;
int cropWidth;
int cropHeight;
int scaleWidth;
int scaleHeight;
};
constexpr const ToI420WithCropAndScaleSetting
kToI420WithCropAndScaleSettings[] = {
ToI420WithCropAndScaleSetting{
.inputWidth = 640,
.inputHeight = 360,
.offsetX = 0,
.offsetY = 0,
.cropWidth = 640,
.cropHeight = 360,
.scaleWidth = 320,
.scaleHeight = 180,
},
ToI420WithCropAndScaleSetting{
.inputWidth = 640,
.inputHeight = 360,
.offsetX = 160,
.offsetY = 90,
.cropWidth = 160,
.cropHeight = 90,
.scaleWidth = 320,
.scaleHeight = 180,
},
};
} // namespace
@interface RTCCVPixelBufferTests : XCTestCase
@end
@implementation RTCCVPixelBufferTests {
}
- (void)testRequiresCroppingNoCrop {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
720,
1280,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertFalse([buffer requiresCropping]);
CVBufferRelease(pixelBufferRef);
}
- (void)testRequiresCroppingWithCrop {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
720,
1280,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *croppedBuffer =
[[RTC_OBJC_TYPE(RTCCVPixelBuffer) alloc]
initWithPixelBuffer:pixelBufferRef
adaptedWidth:720
adaptedHeight:1280
cropWidth:360
cropHeight:640
cropX:100
cropY:100];
XCTAssertTrue([croppedBuffer requiresCropping]);
CVBufferRelease(pixelBufferRef);
}
- (void)testRequiresScalingNoScale {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
720,
1280,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertFalse([buffer requiresScalingToWidth:720 height:1280]);
CVBufferRelease(pixelBufferRef);
}
- (void)testRequiresScalingWithScale {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
720,
1280,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertTrue([buffer requiresScalingToWidth:360 height:640]);
CVBufferRelease(pixelBufferRef);
}
- (void)testRequiresScalingWithScaleAndMatchingCrop {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
720,
1280,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef
adaptedWidth:720
adaptedHeight:1280
cropWidth:360
cropHeight:640
cropX:100
cropY:100];
XCTAssertFalse([buffer requiresScalingToWidth:360 height:640]);
CVBufferRelease(pixelBufferRef);
}
- (void)testBufferSize_NV12 {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
720,
1280,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertEqual([buffer bufferSizeForCroppingAndScalingToWidth:360 height:640],
576000);
CVBufferRelease(pixelBufferRef);
}
- (void)testBufferSize_RGB {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(
NULL, 720, 1280, kCVPixelFormatType_32BGRA, NULL, &pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertEqual([buffer bufferSizeForCroppingAndScalingToWidth:360 height:640],
0);
CVBufferRelease(pixelBufferRef);
}
- (void)testCropAndScale_NV12 {
[self cropAndScaleTestWithNV12];
}
- (void)testCropAndScaleNoOp_NV12 {
[self
cropAndScaleTestWithNV12InputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputSize:CGSizeMake(720, 1280)];
}
- (void)testCropAndScale_NV12FullToVideo {
[self
cropAndScaleTestWithNV12InputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarFullRange
outputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange];
}
- (void)testCropAndScaleZeroSizeFrame_NV12 {
[self
cropAndScaleTestWithNV12InputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputSize:CGSizeMake(0, 0)];
}
- (void)testCropAndScaleToSmallFormat_NV12 {
[self
cropAndScaleTestWithNV12InputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputSize:CGSizeMake(148, 320)];
}
- (void)testCropAndScaleToOddFormat_NV12 {
[self
cropAndScaleTestWithNV12InputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputSize:CGSizeMake(361, 640)];
}
- (void)testCropAndScale_32BGRA {
[self cropAndScaleTestWithRGBPixelFormat:kCVPixelFormatType_32BGRA];
}
- (void)testCropAndScale_32ARGB {
[self cropAndScaleTestWithRGBPixelFormat:kCVPixelFormatType_32ARGB];
}
- (void)testCropAndScaleWithSmallCropInfo_32ARGB {
[self cropAndScaleTestWithRGBPixelFormat:kCVPixelFormatType_32ARGB
cropX:2
cropY:3];
}
- (void)testCropAndScaleWithLargeCropInfo_32ARGB {
[self cropAndScaleTestWithRGBPixelFormat:kCVPixelFormatType_32ARGB
cropX:200
cropY:300];
}
- (void)testToI420_NV12 {
[self toI420WithPixelFormat:kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange];
}
- (void)testToI420_32BGRA {
[self toI420WithPixelFormat:kCVPixelFormatType_32BGRA];
}
- (void)testToI420_32ARGB {
[self toI420WithPixelFormat:kCVPixelFormatType_32ARGB];
}
- (void)testToI420WithCropAndScale_NV12 {
for (const auto &setting : kToI420WithCropAndScaleSettings) {
[self toI420WithCropAndScaleWithPixelFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
setting:setting];
}
}
- (void)testToI420WithCropAndScale_32BGRA {
for (const auto &setting : kToI420WithCropAndScaleSettings) {
[self toI420WithCropAndScaleWithPixelFormat:kCVPixelFormatType_32BGRA
setting:setting];
}
}
- (void)testToI420WithCropAndScale_32ARGB {
for (const auto &setting : kToI420WithCropAndScaleSettings) {
[self toI420WithCropAndScaleWithPixelFormat:kCVPixelFormatType_32ARGB
setting:setting];
}
}
- (void)testScaleBufferTest {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
1920,
1080,
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
NULL,
&pixelBufferRef);
rtc::scoped_refptr<webrtc::I420Buffer> i420Buffer =
CreateI420Gradient(1920, 1080);
CopyI420BufferToCVPixelBuffer(i420Buffer, pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertEqual(buffer.width, 1920);
XCTAssertEqual(buffer.height, 1080);
XCTAssertEqual(buffer.cropX, 0);
XCTAssertEqual(buffer.cropY, 0);
XCTAssertEqual(buffer.cropWidth, 1920);
XCTAssertEqual(buffer.cropHeight, 1080);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer2 =
(RTC_OBJC_TYPE(RTCCVPixelBuffer) *)[buffer cropAndScaleWith:320
offsetY:180
cropWidth:1280
cropHeight:720
scaleWidth:960
scaleHeight:540];
XCTAssertEqual(buffer2.width, 960);
XCTAssertEqual(buffer2.height, 540);
XCTAssertEqual(buffer2.cropX, 320);
XCTAssertEqual(buffer2.cropY, 180);
XCTAssertEqual(buffer2.cropWidth, 1280);
XCTAssertEqual(buffer2.cropHeight, 720);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer3 =
(RTC_OBJC_TYPE(RTCCVPixelBuffer) *)[buffer2 cropAndScaleWith:240
offsetY:135
cropWidth:480
cropHeight:270
scaleWidth:320
scaleHeight:180];
XCTAssertEqual(buffer3.width, 320);
XCTAssertEqual(buffer3.height, 180);
XCTAssertEqual(buffer3.cropX, 640);
XCTAssertEqual(buffer3.cropY, 360);
XCTAssertEqual(buffer3.cropWidth, 640);
XCTAssertEqual(buffer3.cropHeight, 360);
CVBufferRelease(pixelBufferRef);
}
#pragma mark - Shared test code
- (void)cropAndScaleTestWithNV12 {
[self
cropAndScaleTestWithNV12InputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
outputFormat:
kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange];
}
- (void)cropAndScaleTestWithNV12InputFormat:(OSType)inputFormat
outputFormat:(OSType)outputFormat {
[self cropAndScaleTestWithNV12InputFormat:(OSType)inputFormat
outputFormat:(OSType)outputFormat
outputSize:CGSizeMake(360, 640)];
}
- (void)cropAndScaleTestWithNV12InputFormat:(OSType)inputFormat
outputFormat:(OSType)outputFormat
outputSize:(CGSize)outputSize {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL, 720, 1280, inputFormat, NULL, &pixelBufferRef);
rtc::scoped_refptr<webrtc::I420Buffer> i420Buffer =
CreateI420Gradient(720, 1280);
CopyI420BufferToCVPixelBuffer(i420Buffer, pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
XCTAssertEqual(buffer.width, 720);
XCTAssertEqual(buffer.height, 1280);
CVPixelBufferRef outputPixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
outputSize.width,
outputSize.height,
outputFormat,
NULL,
&outputPixelBufferRef);
std::vector<uint8_t> frameScaleBuffer;
if ([buffer requiresScalingToWidth:outputSize.width
height:outputSize.height]) {
int size =
[buffer bufferSizeForCroppingAndScalingToWidth:outputSize.width
height:outputSize.height];
frameScaleBuffer.resize(size);
} else {
frameScaleBuffer.clear();
}
frameScaleBuffer.shrink_to_fit();
[buffer cropAndScaleTo:outputPixelBufferRef
withTempBuffer:frameScaleBuffer.data()];
RTC_OBJC_TYPE(RTCCVPixelBuffer) *scaledBuffer =
[[RTC_OBJC_TYPE(RTCCVPixelBuffer) alloc]
initWithPixelBuffer:outputPixelBufferRef];
XCTAssertEqual(scaledBuffer.width, outputSize.width);
XCTAssertEqual(scaledBuffer.height, outputSize.height);
if (outputSize.width > 0 && outputSize.height > 0) {
RTC_OBJC_TYPE(RTCI420Buffer) *originalBufferI420 = [buffer toI420];
RTC_OBJC_TYPE(RTCI420Buffer) *scaledBufferI420 = [scaledBuffer toI420];
double psnr = I420PSNR(*[originalBufferI420 nativeI420Buffer],
*[scaledBufferI420 nativeI420Buffer]);
XCTAssertEqual(psnr, webrtc::kPerfectPSNR);
}
CVBufferRelease(pixelBufferRef);
}
- (void)cropAndScaleTestWithRGBPixelFormat:(OSType)pixelFormat {
[self cropAndScaleTestWithRGBPixelFormat:pixelFormat cropX:0 cropY:0];
}
- (void)cropAndScaleTestWithRGBPixelFormat:(OSType)pixelFormat
cropX:(int)cropX
cropY:(int)cropY {
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL, 720, 1280, pixelFormat, NULL, &pixelBufferRef);
DrawGradientInRGBPixelBuffer(pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef
adaptedWidth:CVPixelBufferGetWidth(pixelBufferRef)
adaptedHeight:CVPixelBufferGetHeight(pixelBufferRef)
cropWidth:CVPixelBufferGetWidth(pixelBufferRef) - cropX
cropHeight:CVPixelBufferGetHeight(pixelBufferRef) - cropY
cropX:cropX
cropY:cropY];
XCTAssertEqual(buffer.width, 720);
XCTAssertEqual(buffer.height, 1280);
CVPixelBufferRef outputPixelBufferRef = NULL;
CVPixelBufferCreate(NULL, 360, 640, pixelFormat, NULL, &outputPixelBufferRef);
[buffer cropAndScaleTo:outputPixelBufferRef withTempBuffer:NULL];
RTC_OBJC_TYPE(RTCCVPixelBuffer) *scaledBuffer =
[[RTC_OBJC_TYPE(RTCCVPixelBuffer) alloc]
initWithPixelBuffer:outputPixelBufferRef];
XCTAssertEqual(scaledBuffer.width, 360);
XCTAssertEqual(scaledBuffer.height, 640);
RTC_OBJC_TYPE(RTCI420Buffer) *originalBufferI420 = [buffer toI420];
RTC_OBJC_TYPE(RTCI420Buffer) *scaledBufferI420 = [scaledBuffer toI420];
double psnr = I420PSNR(*[originalBufferI420 nativeI420Buffer],
*[scaledBufferI420 nativeI420Buffer]);
XCTAssertEqual(psnr, webrtc::kPerfectPSNR);
CVBufferRelease(pixelBufferRef);
}
- (void)toI420WithPixelFormat:(OSType)pixelFormat {
rtc::scoped_refptr<webrtc::I420Buffer> i420Buffer =
CreateI420Gradient(360, 640);
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL, 360, 640, pixelFormat, NULL, &pixelBufferRef);
CopyI420BufferToCVPixelBuffer(i420Buffer, pixelBufferRef);
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
RTC_OBJC_TYPE(RTCI420Buffer) *fromCVPixelBuffer = [buffer toI420];
double psnr = I420PSNR(*i420Buffer, *[fromCVPixelBuffer nativeI420Buffer]);
double target = webrtc::kPerfectPSNR;
if (pixelFormat != kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange) {
// libyuv's I420ToRGB functions seem to lose some quality.
target = 19.0;
}
XCTAssertGreaterThanOrEqual(psnr, target);
CVBufferRelease(pixelBufferRef);
}
- (void)
toI420WithCropAndScaleWithPixelFormat:(OSType)pixelFormat
setting:
(const ToI420WithCropAndScaleSetting &)
setting {
rtc::scoped_refptr<webrtc::I420Buffer> i420Buffer =
CreateI420Gradient(setting.inputWidth, setting.inputHeight);
CVPixelBufferRef pixelBufferRef = NULL;
CVPixelBufferCreate(NULL,
setting.inputWidth,
setting.inputHeight,
pixelFormat,
NULL,
&pixelBufferRef);
CopyI420BufferToCVPixelBuffer(i420Buffer, pixelBufferRef);
RTC_OBJC_TYPE(RTCI420Buffer) *objcI420Buffer =
[[RTC_OBJC_TYPE(RTCI420Buffer) alloc] initWithFrameBuffer:i420Buffer];
RTC_OBJC_TYPE(RTCI420Buffer) *scaledObjcI420Buffer =
(RTC_OBJC_TYPE(RTCI420Buffer) *)[objcI420Buffer
cropAndScaleWith:setting.offsetX
offsetY:setting.offsetY
cropWidth:setting.cropWidth
cropHeight:setting.cropHeight
scaleWidth:setting.scaleWidth
scaleHeight:setting.scaleHeight];
RTC_OBJC_TYPE(RTCCVPixelBuffer) *buffer = [[RTC_OBJC_TYPE(RTCCVPixelBuffer)
alloc] initWithPixelBuffer:pixelBufferRef];
id<RTC_OBJC_TYPE(RTCVideoFrameBuffer)> scaledBuffer =
[buffer cropAndScaleWith:setting.offsetX
offsetY:setting.offsetY
cropWidth:setting.cropWidth
cropHeight:setting.cropHeight
scaleWidth:setting.scaleWidth
scaleHeight:setting.scaleHeight];
XCTAssertTrue(
[scaledBuffer isKindOfClass:[RTC_OBJC_TYPE(RTCCVPixelBuffer) class]]);
RTC_OBJC_TYPE(RTCI420Buffer) *fromCVPixelBuffer = [scaledBuffer toI420];
double psnr = I420PSNR(*[scaledObjcI420Buffer nativeI420Buffer],
*[fromCVPixelBuffer nativeI420Buffer]);
double target = webrtc::kPerfectPSNR;
if (pixelFormat != kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange) {
// libyuv's I420ToRGB functions seem to lose some quality.
target = 19.0;
}
XCTAssertGreaterThanOrEqual(psnr, target);
CVBufferRelease(pixelBufferRef);
}
@end
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