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// Copyright 2013 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 "cc/raster/tile_task_worker_pool.h"
#include "base/trace_event/trace_event.h"
#include "cc/playback/display_list_raster_source.h"
#include "skia/ext/refptr.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkDrawFilter.h"
#include "third_party/skia/include/core/SkSurface.h"
namespace cc {
TileTaskWorkerPool::TileTaskWorkerPool() {}
TileTaskWorkerPool::~TileTaskWorkerPool() {}
// static
void TileTaskWorkerPool::ScheduleTasksOnOriginThread(TileTaskClient* client,
TaskGraph* graph) {
TRACE_EVENT0("cc", "TileTaskWorkerPool::ScheduleTasksOnOriginThread");
for (TaskGraph::Node::Vector::iterator it = graph->nodes.begin();
it != graph->nodes.end(); ++it) {
TaskGraph::Node& node = *it;
TileTask* task = static_cast<TileTask*>(node.task);
if (!task->HasBeenScheduled()) {
task->WillSchedule();
task->ScheduleOnOriginThread(client);
task->DidSchedule();
}
}
}
static bool IsSupportedPlaybackToMemoryFormat(ResourceFormat format) {
switch (format) {
case RGBA_4444:
case RGBA_8888:
case BGRA_8888:
return true;
case ALPHA_8:
case LUMINANCE_8:
case RGB_565:
case ETC1:
case RED_8:
return false;
}
NOTREACHED();
return false;
}
class SkipImageFilter : public SkDrawFilter {
public:
bool filter(SkPaint* paint, Type type) override {
if (type == kBitmap_Type)
return false;
SkShader* shader = paint->getShader();
return !shader || !shader->isABitmap();
}
};
// static
void TileTaskWorkerPool::PlaybackToMemory(
void* memory,
ResourceFormat format,
const gfx::Size& size,
size_t stride,
const DisplayListRasterSource* raster_source,
const gfx::Rect& canvas_bitmap_rect,
const gfx::Rect& canvas_playback_rect,
float scale,
bool include_images) {
TRACE_EVENT0("cc", "TileTaskWorkerPool::PlaybackToMemory");
DCHECK(IsSupportedPlaybackToMemoryFormat(format)) << format;
// Uses kPremul_SkAlphaType since the result is not known to be opaque.
SkImageInfo info =
SkImageInfo::MakeN32(size.width(), size.height(), kPremul_SkAlphaType);
SkColorType buffer_color_type = ResourceFormatToSkColorType(format);
bool needs_copy = buffer_color_type != info.colorType();
// Use unknown pixel geometry to disable LCD text.
SkSurfaceProps surface_props(0, kUnknown_SkPixelGeometry);
if (raster_source->CanUseLCDText()) {
// LegacyFontHost will get LCD text and skia figures out what type to use.
surface_props = SkSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType);
}
if (!stride)
stride = info.minRowBytes();
DCHECK_GT(stride, 0u);
skia::RefPtr<SkDrawFilter> image_filter;
if (!include_images)
image_filter = skia::AdoptRef(new SkipImageFilter);
if (!needs_copy) {
skia::RefPtr<SkSurface> surface = skia::AdoptRef(
SkSurface::NewRasterDirect(info, memory, stride, &surface_props));
skia::RefPtr<SkCanvas> canvas = skia::SharePtr(surface->getCanvas());
canvas->setDrawFilter(image_filter.get());
raster_source->PlaybackToCanvas(canvas.get(), canvas_bitmap_rect,
canvas_playback_rect, scale);
return;
}
skia::RefPtr<SkSurface> surface =
skia::AdoptRef(SkSurface::NewRaster(info, &surface_props));
skia::RefPtr<SkCanvas> canvas = skia::SharePtr(surface->getCanvas());
canvas->setDrawFilter(image_filter.get());
// TODO(reveman): Improve partial raster support by reducing the size of
// playback rect passed to PlaybackToCanvas. crbug.com/519070
raster_source->PlaybackToCanvas(canvas.get(), canvas_bitmap_rect,
canvas_bitmap_rect, scale);
{
TRACE_EVENT0("cc", "TileTaskWorkerPool::PlaybackToMemory::ConvertPixels");
SkImageInfo dst_info =
SkImageInfo::Make(info.width(), info.height(), buffer_color_type,
info.alphaType(), info.profileType());
bool rv = canvas->readPixels(dst_info, memory, stride, 0, 0);
DCHECK(rv);
}
}
} // namespace cc
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