Revert of Implement webview.captureVisibleRegion()

content/browser/compositor/surface_utils.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 "content/browser/compositor/surface_utils.h"
 
-#include "base/callback_helpers.h"
-#include "base/memory/ref_counted.h"
 #include "build/build_config.h"
-#include "cc/output/copy_output_result.h"
-#include "cc/resources/single_release_callback.h"
 #include "cc/surfaces/surface_id_allocator.h"
-#include "content/common/gpu/client/gl_helper.h"
-#include "skia/ext/image_operations.h"
-#include "skia/ext/refptr.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkColorFilter.h"
-#include "third_party/skia/include/core/SkPaint.h"
-#include "third_party/skia/include/effects/SkLumaColorFilter.h"
-#include "ui/gfx/geometry/rect.h"
-
 
 #if defined(OS_ANDROID) && !defined(USE_AURA)
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #else
 #include "content/browser/compositor/image_transport_factory.h"
 #include "ui/compositor/compositor.h"
 #endif
 
-namespace {
-
-#if !defined(OS_ANDROID) || defined(USE_AURA)
-void CopyFromCompositingSurfaceFinished(
-    const content::ReadbackRequestCallback& callback,
-    scoped_ptr<cc::SingleReleaseCallback> release_callback,
-    scoped_ptr<SkBitmap> bitmap,
-    scoped_ptr<SkAutoLockPixels> bitmap_pixels_lock,
-    bool result) {
-  bitmap_pixels_lock.reset();
-
-  gpu::SyncToken sync_token;
-  if (result) {
-    content::GLHelper* gl_helper =
-        content::ImageTransportFactory::GetInstance()->GetGLHelper();
-    if (gl_helper)
-      gl_helper->GenerateSyncToken(&sync_token);
-  }
-  const bool lost_resource = !sync_token.HasData();
-  release_callback->Run(sync_token, lost_resource);
-
-  callback.Run(*bitmap,
-               result ? content::READBACK_SUCCESS : content::READBACK_FAILED);
-}
-#endif
-
-void PrepareTextureCopyOutputResult(
-    const gfx::Size& dst_size_in_pixel,
-    const SkColorType color_type,
-    const content::ReadbackRequestCallback& callback,
-    scoped_ptr<cc::CopyOutputResult> result) {
-#if defined(OS_ANDROID) && !defined(USE_AURA)
-  //TODO(wjmaclean): See if there's an equivalent pathway for Android and
-  // implement it here.
-  callback.Run(SkBitmap(), content::READBACK_FAILED);
-#else
-  DCHECK(result->HasTexture());
-  base::ScopedClosureRunner scoped_callback_runner(
-      base::Bind(callback, SkBitmap(), content::READBACK_FAILED));
-
-  // TODO(siva.gunturi): We should be able to validate the format here using
-  // GLHelper::IsReadbackConfigSupported before we processs the result.
-  // See crbug.com/415682 and crbug.com/415131.
-  scoped_ptr<SkBitmap> bitmap(new SkBitmap);
-  if (!bitmap->tryAllocPixels(SkImageInfo::Make(
-          dst_size_in_pixel.width(), dst_size_in_pixel.height(), color_type,
-          kOpaque_SkAlphaType))) {
-    scoped_callback_runner.Reset(base::Bind(
-        callback, SkBitmap(), content::READBACK_BITMAP_ALLOCATION_FAILURE));
-    return;
-  }
-
-  content::ImageTransportFactory* factory =
-      content::ImageTransportFactory::GetInstance();
-  content::GLHelper* gl_helper = factory->GetGLHelper();
-  if (!gl_helper)
-    return;
-
-  scoped_ptr<SkAutoLockPixels> bitmap_pixels_lock(
-      new SkAutoLockPixels(*bitmap));
-  uint8_t* pixels = static_cast<uint8_t*>(bitmap->getPixels());
-
-  cc::TextureMailbox texture_mailbox;
-  scoped_ptr<cc::SingleReleaseCallback> release_callback;
-  result->TakeTexture(&texture_mailbox, &release_callback);
-  DCHECK(texture_mailbox.IsTexture());
-
-  ignore_result(scoped_callback_runner.Release());
-
-  gl_helper->CropScaleReadbackAndCleanMailbox(
-      texture_mailbox.mailbox(), texture_mailbox.sync_token(), result->size(),
-      gfx::Rect(result->size()), dst_size_in_pixel, pixels, color_type,
-      base::Bind(&CopyFromCompositingSurfaceFinished, callback,
-                 base::Passed(&release_callback), base::Passed(&bitmap),
-                 base::Passed(&bitmap_pixels_lock)),
-      content::GLHelper::SCALER_QUALITY_GOOD);
-#endif
-}
-
-void PrepareBitmapCopyOutputResult(
-    const gfx::Size& dst_size_in_pixel,
-    const SkColorType preferred_color_type,
-    const content::ReadbackRequestCallback& callback,
-    scoped_ptr<cc::CopyOutputResult> result) {
-  SkColorType color_type = preferred_color_type;
-  if (color_type != kN32_SkColorType && color_type != kAlpha_8_SkColorType) {
-    // Switch back to default colortype if format not supported.
-    color_type = kN32_SkColorType;
-  }
-  DCHECK(result->HasBitmap());
-  scoped_ptr<SkBitmap> source = result->TakeBitmap();
-  DCHECK(source);
-  SkBitmap scaled_bitmap;
-  if (source->width() != dst_size_in_pixel.width() ||
-      source->height() != dst_size_in_pixel.height()) {
-    scaled_bitmap = skia::ImageOperations::Resize(
-        *source, skia::ImageOperations::RESIZE_BEST, dst_size_in_pixel.width(),
-        dst_size_in_pixel.height());
-  } else {
-    scaled_bitmap = *source;
-  }
-  if (color_type == kN32_SkColorType) {
-    DCHECK_EQ(scaled_bitmap.colorType(), kN32_SkColorType);
-    callback.Run(scaled_bitmap, content::READBACK_SUCCESS);
-    return;
-  }
-  DCHECK_EQ(color_type, kAlpha_8_SkColorType);
-  // The software path currently always returns N32 bitmap regardless of the
-  // |color_type| we ask for.
-  DCHECK_EQ(scaled_bitmap.colorType(), kN32_SkColorType);
-  // Paint |scaledBitmap| to alpha-only |grayscale_bitmap|.
-  SkBitmap grayscale_bitmap;
-  bool success = grayscale_bitmap.tryAllocPixels(
-      SkImageInfo::MakeA8(scaled_bitmap.width(), scaled_bitmap.height()));
-  if (!success) {
-    callback.Run(SkBitmap(), content::READBACK_BITMAP_ALLOCATION_FAILURE);
-    return;
-  }
-  SkCanvas canvas(grayscale_bitmap);
-  SkPaint paint;
-  skia::RefPtr<SkColorFilter> filter =
-      skia::AdoptRef(SkLumaColorFilter::Create());
-  paint.setColorFilter(filter.get());
-  canvas.drawBitmap(scaled_bitmap, SkIntToScalar(0), SkIntToScalar(0), &paint);
-  callback.Run(grayscale_bitmap, content::READBACK_SUCCESS);
-}
-
-}  // namespace
-
 namespace content {
 
 scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() {
 #if defined(OS_ANDROID) && !defined(USE_AURA)
   return CompositorImpl::CreateSurfaceIdAllocator();
 #else
   ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
   return factory->GetContextFactory()->CreateSurfaceIdAllocator();
 #endif
 }
 
 cc::SurfaceManager* GetSurfaceManager() {
 #if defined(OS_ANDROID) && !defined(USE_AURA)
   return CompositorImpl::GetSurfaceManager();
 #else
   ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
   return factory->GetSurfaceManager();
 #endif
 }
 
-void CopyFromCompositingSurfaceHasResult(
-    const gfx::Size& dst_size_in_pixel,
-    const SkColorType color_type,
-    const ReadbackRequestCallback& callback,
-    scoped_ptr<cc::CopyOutputResult> result) {
-  if (result->IsEmpty() || result->size().IsEmpty()) {
-    callback.Run(SkBitmap(), READBACK_FAILED);
-    return;
-  }
-
-  gfx::Size output_size_in_pixel;
-  if (dst_size_in_pixel.IsEmpty())
-    output_size_in_pixel = result->size();
-  else
-    output_size_in_pixel = dst_size_in_pixel;
-
-  if (result->HasTexture()) {
-    // GPU-accelerated path
-    PrepareTextureCopyOutputResult(output_size_in_pixel, color_type, callback,
-                                   std::move(result));
-    return;
-  }
-
-  DCHECK(result->HasBitmap());
-  // Software path
-  PrepareBitmapCopyOutputResult(output_size_in_pixel, color_type, callback,
-                                std::move(result));
-}
-
 }  // namespace content