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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrSurface.h"
#include "GrSurfacePriv.h"
#include "SkBitmap.h"
#include "SkGr.h"
#include "SkImageEncoder.h"
#include <stdio.h>
bool GrSurface::writePixels(int left, int top, int width, int height,
GrPixelConfig config, const void* buffer, size_t rowBytes,
uint32_t pixelOpsFlags) {
// go through context so that all necessary flushing occurs
GrContext* context = this->getContext();
if (NULL == context) {
return false;
}
return context->writeSurfacePixels(this, left, top, width, height, config, buffer, rowBytes,
pixelOpsFlags);
}
bool GrSurface::readPixels(int left, int top, int width, int height,
GrPixelConfig config, void* buffer, size_t rowBytes,
uint32_t pixelOpsFlags) {
// go through context so that all necessary flushing occurs
GrContext* context = this->getContext();
if (NULL == context) {
return false;
}
GrRenderTarget* target = this->asRenderTarget();
if (target) {
return context->readRenderTargetPixels(target, left, top, width, height, config, buffer,
rowBytes, pixelOpsFlags);
}
return false;
}
SkImageInfo GrSurface::info() const {
SkColorType colorType;
if (!GrPixelConfig2ColorType(this->config(), &colorType)) {
sk_throw();
}
return SkImageInfo::Make(this->width(), this->height(), colorType, kPremul_SkAlphaType);
}
// TODO: This should probably be a non-member helper function. It might only be needed in
// debug or developer builds.
bool GrSurface::savePixels(const char* filename) {
SkBitmap bm;
if (!bm.tryAllocPixels(SkImageInfo::MakeN32Premul(this->width(), this->height()))) {
return false;
}
bool result = this->readPixels(0, 0, this->width(), this->height(), kSkia8888_GrPixelConfig,
bm.getPixels());
if (!result) {
SkDebugf("------ failed to read pixels for %s\n", filename);
return false;
}
// remove any previous version of this file
remove(filename);
if (!SkImageEncoder::EncodeFile(filename, bm, SkImageEncoder::kPNG_Type, 100)) {
SkDebugf("------ failed to encode %s\n", filename);
remove(filename); // remove any partial file
return false;
}
return true;
}
void GrSurface::flushWrites() {
if (!this->wasDestroyed()) {
this->getContext()->flushSurfaceWrites(this);
}
}
void GrSurface::prepareForExternalRead() {
if (!this->wasDestroyed()) {
this->getContext()->prepareSurfaceForExternalRead(this);
}
}
bool GrSurface::hasPendingRead() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingRead()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingRead()) {
return true;
}
return false;
}
bool GrSurface::hasPendingWrite() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingWrite()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingWrite()) {
return true;
}
return false;
}
bool GrSurface::hasPendingIO() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingIO()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingIO()) {
return true;
}
return false;
}
bool GrSurface::isSameAs(const GrSurface* other) const {
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT) {
return thisRT == other->asRenderTarget();
} else {
const GrTexture* thisTex = this->asTexture();
SkASSERT(thisTex); // We must be one or the other
return thisTex == other->asTexture();
}
}
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