gpu: Add YCbCr 420v extension.

ui/gl/gl_image_io_surface_unittest.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gl/gl_image_io_surface.h"
+#include "ui/gl/test/gl_image_test_template.h"
+
+namespace gfx {
+namespace {
+void AddIntegerValue(CFMutableDictionaryRef dictionary,
+                     const CFStringRef key,
+                     int32 value) {
+  base::ScopedCFTypeRef<CFNumberRef> number(
+      CFNumberCreate(NULL, kCFNumberSInt32Type, &value));
+  CFDictionaryAddValue(dictionary, key, number.get());
+}
+
+IOSurfaceRef CreateIOSurface(const gfx::Size& size) {

[reveman, 2015/10/27 19:31:54]

hm, can we move the IOSurfaceManager interface and the single process impl of
that into ui/gl so we don't have to duplicate this code here?

[Daniele Castagna, 2015/10/29 20:09:05]

This function is similar to GpuMemoryBufferFactoryIOSurface::CreateIOSurface.
Did you mean to move CreateIOSurface to IOSurfaceManager?

+  size_t num_planes = 2;
+  base::ScopedCFTypeRef<CFMutableArrayRef> planes(CFArrayCreateMutable(
+      kCFAllocatorDefault, num_planes, &kCFTypeArrayCallBacks));
+
+  base::ScopedCFTypeRef<CFMutableDictionaryRef> plane_y(
+      CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
+                                &kCFTypeDictionaryKeyCallBacks,
+                                &kCFTypeDictionaryValueCallBacks));
+  AddIntegerValue(plane_y, kIOSurfacePlaneWidth, size.width());
+  AddIntegerValue(plane_y, kIOSurfacePlaneHeight, size.height());
+  AddIntegerValue(plane_y, kIOSurfacePlaneBytesPerElement, 1);
+  CFArrayAppendValue(planes, plane_y);
+
+  base::ScopedCFTypeRef<CFMutableDictionaryRef> plane_uv(
+      CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
+                                &kCFTypeDictionaryKeyCallBacks,
+                                &kCFTypeDictionaryValueCallBacks));
+  AddIntegerValue(plane_uv, kIOSurfacePlaneWidth, size.width() / 2);
+  AddIntegerValue(plane_uv, kIOSurfacePlaneHeight, size.height() / 2);
+  AddIntegerValue(plane_uv, kIOSurfacePlaneBytesPerElement, 2);
+  CFArrayAppendValue(planes, plane_uv);
+
+  base::ScopedCFTypeRef<CFMutableDictionaryRef> properties(
+      CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
+                                &kCFTypeDictionaryKeyCallBacks,
+                                &kCFTypeDictionaryValueCallBacks));
+  AddIntegerValue(properties, kIOSurfaceWidth, size.width());
+  AddIntegerValue(properties, kIOSurfaceHeight, size.height());
+  AddIntegerValue(properties, kIOSurfacePixelFormat, '420v');
+  CFDictionaryAddValue(properties, kIOSurfacePlaneInfo, planes);
+
+  return IOSurfaceCreate(properties);
+}
+
+void SetBuffersDataToColor(const uint8_t color[4],

[reveman, 2015/10/27 19:31:54]

Can this be part of GLImageTestSupport::SetBufferDataToColor so it can be reused
by other implementations?

[Daniele Castagna, 2015/10/29 20:09:04]

Done.

+                           const Size& size,
+                           uint8* y_data,
+                           int stride_y,
+                           uint8* uv_data,
+                           int stride_uv) {
+  uint8_t yuv[] = {
+      (0.257 * color[0]) + (0.504 * color[1]) + (0.098 * color[2]) + 16,
+      -(0.148 * color[0]) - (0.291 * color[1]) + (0.439 * color[2]) + 128,
+      (0.439 * color[0]) - (0.368 * color[1]) - (0.071 * color[2]) + 128};
+  for (int x = 0; x < size.width(); ++x) {
+    for (int y = 0; y < size.height(); ++y) {
+      y_data[stride_y * y + x] = yuv[0];
+    }
+  }
+  for (int x = 0; x < size.width() / 2; ++x) {
+    for (int y = 0; y < size.height() / 2; ++y) {
+      uv_data[stride_uv * y + x * 2] = yuv[1];
+      uv_data[stride_uv * y + x * 2 + 1] = yuv[2];
+    }
+  }
+}
+
+class GLImageIOSurface420vTestDelegate {
+ public:
+  scoped_refptr<GLImage> CreateSolidColorImage(const Size& size,
+                                               const uint8_t color[4]) const {
+    scoped_refptr<GLImageIOSurface> image(
+        new GLImageIOSurface(size, GL_RGB_YCBCR_420V_CHROMIUM));
+    IOSurfaceRef surface_ref = CreateIOSurface(size);
+    IOReturn status = IOSurfaceLock(surface_ref, 0, nullptr);
+    EXPECT_NE(status, kIOReturnCannotLock);
+    void* y_data = IOSurfaceGetBaseAddressOfPlane(surface_ref, 0);
+    void* uv_data = IOSurfaceGetBaseAddressOfPlane(surface_ref, 1);
+
+    SetBuffersDataToColor(color, size, static_cast<uint8*>(y_data),
+                          IOSurfaceGetBytesPerRowOfPlane(surface_ref, 0),
+                          static_cast<uint8*>(uv_data),
+                          IOSurfaceGetBytesPerRowOfPlane(surface_ref, 1));
+
+    IOSurfaceUnlock(surface_ref, 0, nullptr);
+
+    bool rv = image->Initialize(surface_ref, GenericSharedMemoryId(1),
+                                BufferFormat::YUV_420_BIPLANAR);
+    EXPECT_TRUE(rv);
+
+    return image;
+  }
+};
+
+INSTANTIATE_TYPED_TEST_CASE_P(GLImageIOSurface,
+                              GLImageTest,
+                              GLImageIOSurface420vTestDelegate);
+
+INSTANTIATE_TYPED_TEST_CASE_P(GLImageIOSurface,
+                              GLImageCopyTest,
+                              GLImageIOSurface420vTestDelegate);
+
+}  // namespace
+}  // namespace gfx