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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/capture/video/mac/test/fake_av_capture_device_format.h"
#include "media/capture/video/mac/video_capture_device_avfoundation_mac.h"
#include "media/capture/video/mac/video_capture_device_avfoundation_utils_mac.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/mac/scoped_nsobject.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
// Test the behavior of the function FindBestCaptureFormat which is used to
// determine the capture format.
TEST(VideoCaptureDeviceMacTest, FindBestCaptureFormat) {
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_320_240_xyzw_30(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:320
height:240
fourCC:'xyzw'
frameRate:30]);
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_320_240_yuvs_30(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:320
height:240
fourCC:'yuvs'
frameRate:30]);
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_640_480_yuvs_30(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:640
height:480
fourCC:'yuvs'
frameRate:30]);
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_320_240_2vuy_30(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:320
height:240
fourCC:'2vuy'
frameRate:30]);
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_640_480_2vuy_30(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:640
height:480
fourCC:'2vuy'
frameRate:30]);
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_640_480_2vuy_60(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:640
height:480
fourCC:'2vuy'
frameRate:30]);
base::scoped_nsobject<FakeAVCaptureDeviceFormat> fmt_640_480_2vuy_30_60(
[[FakeAVCaptureDeviceFormat alloc] initWithWidth:640
height:480
fourCC:'2vuy'
frameRate:30]);
[fmt_640_480_2vuy_30_60 setSecondFrameRate:60];
// We'll be using this for the result in all of the below tests. Note that
// in all of the tests, the test is run with the candidate capture functions
// in two orders (forward and reversed). This is to avoid having the traversal
// order of FindBestCaptureFormat affect the result.
AVCaptureDeviceFormat* result = nil;
// If we can't find a valid format, we should return nil;
result = FindBestCaptureFormat(@[ fmt_320_240_xyzw_30 ], 320, 240, 30);
EXPECT_EQ(result, nil);
// Can't find a matching resolution
result = FindBestCaptureFormat(@[ fmt_320_240_yuvs_30, fmt_320_240_2vuy_30 ],
640, 480, 30);
EXPECT_EQ(result, nil);
result = FindBestCaptureFormat(@[ fmt_320_240_2vuy_30, fmt_320_240_yuvs_30 ],
640, 480, 30);
EXPECT_EQ(result, nil);
// Simple exact match.
result = FindBestCaptureFormat(@[ fmt_640_480_yuvs_30, fmt_320_240_yuvs_30 ],
320, 240, 30);
EXPECT_EQ(result, fmt_320_240_yuvs_30.get());
result = FindBestCaptureFormat(@[ fmt_320_240_yuvs_30, fmt_640_480_yuvs_30 ],
320, 240, 30);
EXPECT_EQ(result, fmt_320_240_yuvs_30.get());
// Different frame rate.
result = FindBestCaptureFormat(@[ fmt_640_480_2vuy_30 ], 640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_30.get());
// Prefer the same frame rate.
result = FindBestCaptureFormat(@[ fmt_640_480_yuvs_30, fmt_640_480_2vuy_60 ],
640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_60.get());
result = FindBestCaptureFormat(@[ fmt_640_480_2vuy_60, fmt_640_480_yuvs_30 ],
640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_60.get());
// Prefer version with matching frame rate.
result = FindBestCaptureFormat(@[ fmt_640_480_yuvs_30, fmt_640_480_2vuy_60 ],
640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_60.get());
result = FindBestCaptureFormat(@[ fmt_640_480_2vuy_60, fmt_640_480_yuvs_30 ],
640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_60.get());
// Prefer version with matching frame rate when there are multiple framerates.
result = FindBestCaptureFormat(
@[ fmt_640_480_yuvs_30, fmt_640_480_2vuy_30_60 ], 640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_30_60.get());
result = FindBestCaptureFormat(
@[ fmt_640_480_2vuy_30_60, fmt_640_480_yuvs_30 ], 640, 480, 60);
EXPECT_EQ(result, fmt_640_480_2vuy_30_60.get());
// Prefer version with the lower maximum framerate when there are multiple
// framerates.
result = FindBestCaptureFormat(
@[ fmt_640_480_2vuy_30, fmt_640_480_2vuy_30_60 ], 640, 480, 30);
EXPECT_EQ(result, fmt_640_480_2vuy_30.get());
result = FindBestCaptureFormat(
@[ fmt_640_480_2vuy_30_60, fmt_640_480_2vuy_30 ], 640, 480, 30);
EXPECT_EQ(result, fmt_640_480_2vuy_30.get());
// Prefer the Chromium format order.
result = FindBestCaptureFormat(@[ fmt_640_480_yuvs_30, fmt_640_480_2vuy_30 ],
640, 480, 30);
EXPECT_EQ(result, fmt_640_480_2vuy_30.get());
result = FindBestCaptureFormat(@[ fmt_640_480_2vuy_30, fmt_640_480_yuvs_30 ],
640, 480, 30);
EXPECT_EQ(result, fmt_640_480_2vuy_30.get());
}
} // namespace media
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