talk/media/base/videocommon_unittest.cc - platform/external/webrtc - Git at Google

 /*
  * libjingle
  * Copyright 2008 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
  *     this list of conditions and the following disclaimer in the documentation
  *     and/or other materials provided with the distribution.
  *  3. The name of the author may not be used to endorse or promote products
  *     derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "talk/media/base/videocommon.h"
 #include "webrtc/base/gunit.h"

 namespace cricket {

 TEST(VideoCommonTest, TestCanonicalFourCC) {
   // Canonical fourccs are not changed.
   EXPECT_EQ(FOURCC_I420, CanonicalFourCC(FOURCC_I420));
   // The special FOURCC_ANY value is not changed.
   EXPECT_EQ(FOURCC_ANY, CanonicalFourCC(FOURCC_ANY));
   // Aliases are translated to the canonical equivalent.
   EXPECT_EQ(FOURCC_I420, CanonicalFourCC(FOURCC_IYUV));
   EXPECT_EQ(FOURCC_I422, CanonicalFourCC(FOURCC_YU16));
   EXPECT_EQ(FOURCC_I444, CanonicalFourCC(FOURCC_YU24));
   EXPECT_EQ(FOURCC_YUY2, CanonicalFourCC(FOURCC_YUYV));
   EXPECT_EQ(FOURCC_YUY2, CanonicalFourCC(FOURCC_YUVS));
   EXPECT_EQ(FOURCC_UYVY, CanonicalFourCC(FOURCC_HDYC));
   EXPECT_EQ(FOURCC_UYVY, CanonicalFourCC(FOURCC_2VUY));
   EXPECT_EQ(FOURCC_MJPG, CanonicalFourCC(FOURCC_JPEG));
   EXPECT_EQ(FOURCC_MJPG, CanonicalFourCC(FOURCC_DMB1));
   EXPECT_EQ(FOURCC_BGGR, CanonicalFourCC(FOURCC_BA81));
   EXPECT_EQ(FOURCC_RAW, CanonicalFourCC(FOURCC_RGB3));
   EXPECT_EQ(FOURCC_24BG, CanonicalFourCC(FOURCC_BGR3));
   EXPECT_EQ(FOURCC_BGRA, CanonicalFourCC(FOURCC_CM32));
   EXPECT_EQ(FOURCC_RAW, CanonicalFourCC(FOURCC_CM24));
 }

 // Test conversion between interval and fps
 TEST(VideoCommonTest, TestVideoFormatFps) {
   EXPECT_EQ(VideoFormat::kMinimumInterval, VideoFormat::FpsToInterval(0));
   EXPECT_EQ(rtc::kNumNanosecsPerSec / 20, VideoFormat::FpsToInterval(20));
   EXPECT_EQ(20, VideoFormat::IntervalToFps(rtc::kNumNanosecsPerSec / 20));
   EXPECT_EQ(0, VideoFormat::IntervalToFps(0));
 }

 // Test IsSize0x0
 TEST(VideoCommonTest, TestVideoFormatIsSize0x0) {
   VideoFormat format;
   EXPECT_TRUE(format.IsSize0x0());
   format.width = 320;
   EXPECT_FALSE(format.IsSize0x0());
 }

 // Test ToString: print fourcc when it is printable.
 TEST(VideoCommonTest, TestVideoFormatToString) {
   VideoFormat format;
   EXPECT_EQ("0x0x0", format.ToString());

   format.fourcc = FOURCC_I420;
   format.width = 640;
   format.height = 480;
   format.interval = VideoFormat::FpsToInterval(20);
   EXPECT_EQ("I420 640x480x20", format.ToString());

   format.fourcc = FOURCC_ANY;
   format.width = 640;
   format.height = 480;
   format.interval = VideoFormat::FpsToInterval(20);
   EXPECT_EQ("640x480x20", format.ToString());
 }

 // Test comparison.
 TEST(VideoCommonTest, TestVideoFormatCompare) {
   VideoFormat format(640, 480, VideoFormat::FpsToInterval(20), FOURCC_I420);
   VideoFormat format2;
   EXPECT_NE(format, format2);

   // Same pixelrate, different fourcc.
   format2 = format;
   format2.fourcc = FOURCC_YUY2;
   EXPECT_NE(format, format2);
   EXPECT_FALSE(format.IsPixelRateLess(format2) ||
                format2.IsPixelRateLess(format2));

   format2 = format;
   format2.interval /= 2;
   EXPECT_TRUE(format.IsPixelRateLess(format2));

   format2 = format;
   format2.width *= 2;
   EXPECT_TRUE(format.IsPixelRateLess(format2));
 }

 TEST(VideoCommonTest, TestComputeScaleWithLowFps) {
   int scaled_width, scaled_height;

   // Request small enough. Expect no change.
   ComputeScale(2560, 1600, 5, &scaled_width, &scaled_height);
   EXPECT_EQ(2560, scaled_width);
   EXPECT_EQ(1600, scaled_height);

   // Request too many pixels. Expect 1/2 size.
   ComputeScale(4096, 2560, 5, &scaled_width, &scaled_height);
   EXPECT_EQ(2048, scaled_width);
   EXPECT_EQ(1280, scaled_height);

   // Request too many pixels and too wide and tall. Expect 1/4 size.
   ComputeScale(16000, 10000, 5, &scaled_width, &scaled_height);
   EXPECT_EQ(2000, scaled_width);
   EXPECT_EQ(1250, scaled_height);

   // Request too wide. (two 30 inch monitors). Expect 1/2 size.
   ComputeScale(5120, 1600, 5, &scaled_width, &scaled_height);
   EXPECT_EQ(2560, scaled_width);
   EXPECT_EQ(800, scaled_height);

   // Request too wide but not too many pixels. Expect 1/2 size.
   ComputeScale(8192, 1024, 5, &scaled_width, &scaled_height);
   EXPECT_EQ(4096, scaled_width);
   EXPECT_EQ(512, scaled_height);

   // Request too tall. Expect 1/4 size.
   ComputeScale(1024, 8192, 5, &scaled_width, &scaled_height);
   EXPECT_EQ(256, scaled_width);
   EXPECT_EQ(2048, scaled_height);
 }

 // Same as TestComputeScale but with 15 fps instead of 5 fps.
 TEST(VideoCommonTest, TestComputeScaleWithHighFps) {
   int scaled_width, scaled_height;

   // Request small enough but high fps. Expect 1/2 size.
   ComputeScale(2560, 1600, 15, &scaled_width, &scaled_height);
   EXPECT_EQ(1280, scaled_width);
   EXPECT_EQ(800, scaled_height);

   // Request too many pixels. Expect 1/2 size.
   ComputeScale(4096, 2560, 15, &scaled_width, &scaled_height);
   EXPECT_EQ(2048, scaled_width);
   EXPECT_EQ(1280, scaled_height);

   // Request too many pixels and too wide and tall. Expect 1/16 size.
   ComputeScale(64000, 40000, 15, &scaled_width, &scaled_height);
   EXPECT_EQ(4000, scaled_width);
   EXPECT_EQ(2500, scaled_height);

   // Request too wide. (two 30 inch monitors). Expect 1/2 size.
   ComputeScale(5120, 1600, 15, &scaled_width, &scaled_height);
   EXPECT_EQ(2560, scaled_width);
   EXPECT_EQ(800, scaled_height);

   // Request too wide but not too many pixels. Expect 1/2 size.
   ComputeScale(8192, 1024, 15, &scaled_width, &scaled_height);
   EXPECT_EQ(4096, scaled_width);
   EXPECT_EQ(512, scaled_height);

   // Request too tall. Expect 1/4 size.
   ComputeScale(1024, 8192, 15, &scaled_width, &scaled_height);
   EXPECT_EQ(256, scaled_width);
   EXPECT_EQ(2048, scaled_height);
 }

 TEST(VideoCommonTest, TestComputeCrop) {
   int cropped_width, cropped_height;

   // Request 16:9 to 16:9.  Expect no cropping.
   ComputeCrop(1280, 720,  // Crop size 16:9
               640, 360,  // Frame is 4:3
               1, 1,  // Normal 1:1 pixels
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(640, cropped_width);
   EXPECT_EQ(360, cropped_height);

   // Request 4:3 to 16:9.  Expect vertical.
   ComputeCrop(640, 360,  // Crop size 16:9
               640, 480,  // Frame is 4:3
               1, 1,  // Normal 1:1 pixels
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(640, cropped_width);
   EXPECT_EQ(360, cropped_height);

   // Request 16:9 to 4:3.  Expect horizontal crop.
   ComputeCrop(640, 480,  // Crop size 4:3
               640, 360,  // Frame is 16:9
               1, 1,  // Normal 1:1 pixels
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(480, cropped_width);
   EXPECT_EQ(360, cropped_height);

   // Request 16:9 but VGA has 3:8 pixel aspect ratio. Expect no crop.
   // This occurs on HP4110 on OSX 10.5/10.6/10.7
   ComputeCrop(640, 360,  // Crop size 16:9
               640, 480,  // Frame is 4:3
               3, 8,  // Pixel aspect ratio is tall
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(640, cropped_width);
   EXPECT_EQ(480, cropped_height);

   // Request 16:9 but QVGA has 15:11 pixel aspect ratio. Expect horizontal crop.
   // This occurs on Logitech B910 on OSX 10.5/10.6/10.7 in Hangouts.
   ComputeCrop(640, 360,  // Crop size 16:9
               320, 240,  // Frame is 4:3
               15, 11,  // Pixel aspect ratio is wide
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(312, cropped_width);
   EXPECT_EQ(240, cropped_height);

   // Request 16:10 but QVGA has 15:11 pixel aspect ratio.
   // Expect horizontal crop.
   // This occurs on Logitech B910 on OSX 10.5/10.6/10.7 in gmail.
   ComputeCrop(640, 400,  // Crop size 16:10
               320, 240,  // Frame is 4:3
               15, 11,  // Pixel aspect ratio is wide
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(280, cropped_width);
   EXPECT_EQ(240, cropped_height);

   // Request 16:9 but VGA has 6:5 pixel aspect ratio. Expect vertical crop.
   // This occurs on Logitech QuickCam Pro C9000 on OSX
   ComputeCrop(640, 360,  // Crop size 16:9
               640, 480,  // Frame is 4:3
               6, 5,  // Pixel aspect ratio is wide
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(640, cropped_width);
   EXPECT_EQ(432, cropped_height);

   // Request 16:10 but HD is 16:9. Expect horizontal crop.
   // This occurs in settings and local preview with HD experiment.
   ComputeCrop(1280, 800,  // Crop size 16:10
               1280, 720,  // Frame is 4:3
               1, 1,  // Pixel aspect ratio is wide
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(1152, cropped_width);
   EXPECT_EQ(720, cropped_height);

   // Request 16:9 but HD has 3:4 pixel aspect ratio. Expect vertical crop.
   // This occurs on Logitech B910 on OSX 10.5/10.6.7 but not OSX 10.6.8 or 10.7
   ComputeCrop(1280, 720,  // Crop size 16:9
               1280, 720,  // Frame is 4:3
               3, 4,  // Pixel aspect ratio is wide
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(1280, cropped_width);
   EXPECT_EQ(540, cropped_height);

   // Request 16:9 to 3:4 (portrait).  Expect no cropping.
   ComputeCrop(640, 360,  // Crop size 16:9
               640, 480,  // Frame is 3:4 portrait
               1, 1,  // Normal 1:1 pixels
               90,
               &cropped_width, &cropped_height);
   EXPECT_EQ(640, cropped_width);
   EXPECT_EQ(480, cropped_height);

   // Request 9:16 from VGA rotated (portrait).  Expect crop.
   ComputeCrop(360, 640,  // Crop size 9:16
               640, 480,  // Frame is 3:4 portrait
               1, 1,  // Normal 1:1 pixels
               90,
               &cropped_width, &cropped_height);
   EXPECT_EQ(640, cropped_width);
   EXPECT_EQ(360, cropped_height);

   // Cropped size 0x0.  Expect no cropping.
   // This is used when adding multiple capturers
   ComputeCrop(0, 0,  // Crop size 0x0
               1024, 768,  // Frame is 3:4 portrait
               1, 1,  // Normal 1:1 pixels
               0,
               &cropped_width, &cropped_height);
   EXPECT_EQ(1024, cropped_width);
   EXPECT_EQ(768, cropped_height);
 }

 TEST(VideoCommonTest, TestComputeScaleToSquarePixels) {
   int scaled_width, scaled_height;

   // Pixel aspect ratio is 4:3.  Logical aspect ratio is 16:9.  Expect scale
   // to square pixels with physical aspect ratio of 16:9.
   ComputeScaleToSquarePixels(640, 480,
                              4, 3,  // 4 x 3 pixel aspect ratio
                              &scaled_width, &scaled_height);
   EXPECT_EQ(640, scaled_width);
   EXPECT_EQ(360, scaled_height);

   // Pixel aspect ratio is 3:8.  Physical aspect ratio is 4:3.  Expect scale
   // to square pixels with logical aspect ratio of 1:2.
   // Note that 640x1280 will be scaled down by video adapter to view request
   // of 640*360 and will end up using 320x640.
   ComputeScaleToSquarePixels(640, 480,
                              3, 8,  // 4 x 3 pixel aspect ratio
                              &scaled_width, &scaled_height);
   EXPECT_EQ(640, scaled_width);
   EXPECT_EQ(1280, scaled_height);
 }

 }  // namespace cricket
	/*
	* libjingle
	* Copyright 2008 Google Inc.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* 1. Redistributions of source code must retain the above copyright notice,
	* this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright notice,
	* this list of conditions and the following disclaimer in the documentation
	* and/or other materials provided with the distribution.
	* 3. The name of the author may not be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "talk/media/base/videocommon.h"
	#include "webrtc/base/gunit.h"

	namespace cricket {

	TEST(VideoCommonTest, TestCanonicalFourCC) {
	// Canonical fourccs are not changed.
	EXPECT_EQ(FOURCC_I420, CanonicalFourCC(FOURCC_I420));
	// The special FOURCC_ANY value is not changed.
	EXPECT_EQ(FOURCC_ANY, CanonicalFourCC(FOURCC_ANY));
	// Aliases are translated to the canonical equivalent.
	EXPECT_EQ(FOURCC_I420, CanonicalFourCC(FOURCC_IYUV));
	EXPECT_EQ(FOURCC_I422, CanonicalFourCC(FOURCC_YU16));
	EXPECT_EQ(FOURCC_I444, CanonicalFourCC(FOURCC_YU24));
	EXPECT_EQ(FOURCC_YUY2, CanonicalFourCC(FOURCC_YUYV));
	EXPECT_EQ(FOURCC_YUY2, CanonicalFourCC(FOURCC_YUVS));
	EXPECT_EQ(FOURCC_UYVY, CanonicalFourCC(FOURCC_HDYC));
	EXPECT_EQ(FOURCC_UYVY, CanonicalFourCC(FOURCC_2VUY));
	EXPECT_EQ(FOURCC_MJPG, CanonicalFourCC(FOURCC_JPEG));
	EXPECT_EQ(FOURCC_MJPG, CanonicalFourCC(FOURCC_DMB1));
	EXPECT_EQ(FOURCC_BGGR, CanonicalFourCC(FOURCC_BA81));
	EXPECT_EQ(FOURCC_RAW, CanonicalFourCC(FOURCC_RGB3));
	EXPECT_EQ(FOURCC_24BG, CanonicalFourCC(FOURCC_BGR3));
	EXPECT_EQ(FOURCC_BGRA, CanonicalFourCC(FOURCC_CM32));
	EXPECT_EQ(FOURCC_RAW, CanonicalFourCC(FOURCC_CM24));
	}

	// Test conversion between interval and fps
	TEST(VideoCommonTest, TestVideoFormatFps) {
	EXPECT_EQ(VideoFormat::kMinimumInterval, VideoFormat::FpsToInterval(0));
	EXPECT_EQ(rtc::kNumNanosecsPerSec / 20, VideoFormat::FpsToInterval(20));
	EXPECT_EQ(20, VideoFormat::IntervalToFps(rtc::kNumNanosecsPerSec / 20));
	EXPECT_EQ(0, VideoFormat::IntervalToFps(0));
	}

	// Test IsSize0x0
	TEST(VideoCommonTest, TestVideoFormatIsSize0x0) {
	VideoFormat format;
	EXPECT_TRUE(format.IsSize0x0());
	format.width = 320;
	EXPECT_FALSE(format.IsSize0x0());
	}

	// Test ToString: print fourcc when it is printable.
	TEST(VideoCommonTest, TestVideoFormatToString) {
	VideoFormat format;
	EXPECT_EQ("0x0x0", format.ToString());

	format.fourcc = FOURCC_I420;
	format.width = 640;
	format.height = 480;
	format.interval = VideoFormat::FpsToInterval(20);
	EXPECT_EQ("I420 640x480x20", format.ToString());

	format.fourcc = FOURCC_ANY;
	format.width = 640;
	format.height = 480;
	format.interval = VideoFormat::FpsToInterval(20);
	EXPECT_EQ("640x480x20", format.ToString());
	}

	// Test comparison.
	TEST(VideoCommonTest, TestVideoFormatCompare) {
	VideoFormat format(640, 480, VideoFormat::FpsToInterval(20), FOURCC_I420);
	VideoFormat format2;
	EXPECT_NE(format, format2);

	// Same pixelrate, different fourcc.
	format2 = format;
	format2.fourcc = FOURCC_YUY2;
	EXPECT_NE(format, format2);
	EXPECT_FALSE(format.IsPixelRateLess(format2) \|\|
	format2.IsPixelRateLess(format2));

	format2 = format;
	format2.interval /= 2;
	EXPECT_TRUE(format.IsPixelRateLess(format2));

	format2 = format;
	format2.width *= 2;
	EXPECT_TRUE(format.IsPixelRateLess(format2));
	}

	TEST(VideoCommonTest, TestComputeScaleWithLowFps) {
	int scaled_width, scaled_height;

	// Request small enough. Expect no change.
	ComputeScale(2560, 1600, 5, &scaled_width, &scaled_height);
	EXPECT_EQ(2560, scaled_width);
	EXPECT_EQ(1600, scaled_height);

	// Request too many pixels. Expect 1/2 size.
	ComputeScale(4096, 2560, 5, &scaled_width, &scaled_height);
	EXPECT_EQ(2048, scaled_width);
	EXPECT_EQ(1280, scaled_height);

	// Request too many pixels and too wide and tall. Expect 1/4 size.
	ComputeScale(16000, 10000, 5, &scaled_width, &scaled_height);
	EXPECT_EQ(2000, scaled_width);
	EXPECT_EQ(1250, scaled_height);

	// Request too wide. (two 30 inch monitors). Expect 1/2 size.
	ComputeScale(5120, 1600, 5, &scaled_width, &scaled_height);
	EXPECT_EQ(2560, scaled_width);
	EXPECT_EQ(800, scaled_height);

	// Request too wide but not too many pixels. Expect 1/2 size.
	ComputeScale(8192, 1024, 5, &scaled_width, &scaled_height);
	EXPECT_EQ(4096, scaled_width);
	EXPECT_EQ(512, scaled_height);

	// Request too tall. Expect 1/4 size.
	ComputeScale(1024, 8192, 5, &scaled_width, &scaled_height);
	EXPECT_EQ(256, scaled_width);
	EXPECT_EQ(2048, scaled_height);
	}

	// Same as TestComputeScale but with 15 fps instead of 5 fps.
	TEST(VideoCommonTest, TestComputeScaleWithHighFps) {
	int scaled_width, scaled_height;

	// Request small enough but high fps. Expect 1/2 size.
	ComputeScale(2560, 1600, 15, &scaled_width, &scaled_height);
	EXPECT_EQ(1280, scaled_width);
	EXPECT_EQ(800, scaled_height);

	// Request too many pixels. Expect 1/2 size.
	ComputeScale(4096, 2560, 15, &scaled_width, &scaled_height);
	EXPECT_EQ(2048, scaled_width);
	EXPECT_EQ(1280, scaled_height);

	// Request too many pixels and too wide and tall. Expect 1/16 size.
	ComputeScale(64000, 40000, 15, &scaled_width, &scaled_height);
	EXPECT_EQ(4000, scaled_width);
	EXPECT_EQ(2500, scaled_height);

	// Request too wide. (two 30 inch monitors). Expect 1/2 size.
	ComputeScale(5120, 1600, 15, &scaled_width, &scaled_height);
	EXPECT_EQ(2560, scaled_width);
	EXPECT_EQ(800, scaled_height);

	// Request too wide but not too many pixels. Expect 1/2 size.
	ComputeScale(8192, 1024, 15, &scaled_width, &scaled_height);
	EXPECT_EQ(4096, scaled_width);
	EXPECT_EQ(512, scaled_height);

	// Request too tall. Expect 1/4 size.
	ComputeScale(1024, 8192, 15, &scaled_width, &scaled_height);
	EXPECT_EQ(256, scaled_width);
	EXPECT_EQ(2048, scaled_height);
	}

	TEST(VideoCommonTest, TestComputeCrop) {
	int cropped_width, cropped_height;

	// Request 16:9 to 16:9. Expect no cropping.
	ComputeCrop(1280, 720, // Crop size 16:9
	640, 360, // Frame is 4:3
	1, 1, // Normal 1:1 pixels
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(640, cropped_width);
	EXPECT_EQ(360, cropped_height);

	// Request 4:3 to 16:9. Expect vertical.
	ComputeCrop(640, 360, // Crop size 16:9
	640, 480, // Frame is 4:3
	1, 1, // Normal 1:1 pixels
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(640, cropped_width);
	EXPECT_EQ(360, cropped_height);

	// Request 16:9 to 4:3. Expect horizontal crop.
	ComputeCrop(640, 480, // Crop size 4:3
	640, 360, // Frame is 16:9
	1, 1, // Normal 1:1 pixels
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(480, cropped_width);
	EXPECT_EQ(360, cropped_height);

	// Request 16:9 but VGA has 3:8 pixel aspect ratio. Expect no crop.
	// This occurs on HP4110 on OSX 10.5/10.6/10.7
	ComputeCrop(640, 360, // Crop size 16:9
	640, 480, // Frame is 4:3
	3, 8, // Pixel aspect ratio is tall
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(640, cropped_width);
	EXPECT_EQ(480, cropped_height);

	// Request 16:9 but QVGA has 15:11 pixel aspect ratio. Expect horizontal crop.
	// This occurs on Logitech B910 on OSX 10.5/10.6/10.7 in Hangouts.
	ComputeCrop(640, 360, // Crop size 16:9
	320, 240, // Frame is 4:3
	15, 11, // Pixel aspect ratio is wide
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(312, cropped_width);
	EXPECT_EQ(240, cropped_height);

	// Request 16:10 but QVGA has 15:11 pixel aspect ratio.
	// Expect horizontal crop.
	// This occurs on Logitech B910 on OSX 10.5/10.6/10.7 in gmail.
	ComputeCrop(640, 400, // Crop size 16:10
	320, 240, // Frame is 4:3
	15, 11, // Pixel aspect ratio is wide
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(280, cropped_width);
	EXPECT_EQ(240, cropped_height);

	// Request 16:9 but VGA has 6:5 pixel aspect ratio. Expect vertical crop.
	// This occurs on Logitech QuickCam Pro C9000 on OSX
	ComputeCrop(640, 360, // Crop size 16:9
	640, 480, // Frame is 4:3
	6, 5, // Pixel aspect ratio is wide
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(640, cropped_width);
	EXPECT_EQ(432, cropped_height);

	// Request 16:10 but HD is 16:9. Expect horizontal crop.
	// This occurs in settings and local preview with HD experiment.
	ComputeCrop(1280, 800, // Crop size 16:10
	1280, 720, // Frame is 4:3
	1, 1, // Pixel aspect ratio is wide
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(1152, cropped_width);
	EXPECT_EQ(720, cropped_height);

	// Request 16:9 but HD has 3:4 pixel aspect ratio. Expect vertical crop.
	// This occurs on Logitech B910 on OSX 10.5/10.6.7 but not OSX 10.6.8 or 10.7
	ComputeCrop(1280, 720, // Crop size 16:9
	1280, 720, // Frame is 4:3
	3, 4, // Pixel aspect ratio is wide
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(1280, cropped_width);
	EXPECT_EQ(540, cropped_height);

	// Request 16:9 to 3:4 (portrait). Expect no cropping.
	ComputeCrop(640, 360, // Crop size 16:9
	640, 480, // Frame is 3:4 portrait
	1, 1, // Normal 1:1 pixels
	90,
	&cropped_width, &cropped_height);
	EXPECT_EQ(640, cropped_width);
	EXPECT_EQ(480, cropped_height);

	// Request 9:16 from VGA rotated (portrait). Expect crop.
	ComputeCrop(360, 640, // Crop size 9:16
	640, 480, // Frame is 3:4 portrait
	1, 1, // Normal 1:1 pixels
	90,
	&cropped_width, &cropped_height);
	EXPECT_EQ(640, cropped_width);
	EXPECT_EQ(360, cropped_height);

	// Cropped size 0x0. Expect no cropping.
	// This is used when adding multiple capturers
	ComputeCrop(0, 0, // Crop size 0x0
	1024, 768, // Frame is 3:4 portrait
	1, 1, // Normal 1:1 pixels
	0,
	&cropped_width, &cropped_height);
	EXPECT_EQ(1024, cropped_width);
	EXPECT_EQ(768, cropped_height);
	}

	TEST(VideoCommonTest, TestComputeScaleToSquarePixels) {
	int scaled_width, scaled_height;

	// Pixel aspect ratio is 4:3. Logical aspect ratio is 16:9. Expect scale
	// to square pixels with physical aspect ratio of 16:9.
	ComputeScaleToSquarePixels(640, 480,
	4, 3, // 4 x 3 pixel aspect ratio
	&scaled_width, &scaled_height);
	EXPECT_EQ(640, scaled_width);
	EXPECT_EQ(360, scaled_height);

	// Pixel aspect ratio is 3:8. Physical aspect ratio is 4:3. Expect scale
	// to square pixels with logical aspect ratio of 1:2.
	// Note that 640x1280 will be scaled down by video adapter to view request
	// of 640*360 and will end up using 320x640.
	ComputeScaleToSquarePixels(640, 480,
	3, 8, // 4 x 3 pixel aspect ratio
	&scaled_width, &scaled_height);
	EXPECT_EQ(640, scaled_width);
	EXPECT_EQ(1280, scaled_height);
	}

	} // namespace cricket