blob: a4cab0aacb548c3ad277fb06b7059360bd719468 [file] [log] [blame]
* Copyright 2015 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "GrYUVProvider.h"
#include "GrClip.h"
#include "GrColorSpaceXform.h"
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrProxyProvider.h"
#include "GrRenderTargetContext.h"
#include "GrTextureProxy.h"
#include "SkAutoMalloc.h"
#include "SkCachedData.h"
#include "SkRefCnt.h"
#include "SkResourceCache.h"
#include "SkYUVPlanesCache.h"
#include "SkYUVAIndex.h"
#include "effects/GrYUVtoRGBEffect.h"
sk_sp<SkCachedData> GrYUVProvider::getPlanes(SkYUVASizeInfo* size,
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
SkYUVColorSpace* colorSpace,
const void* constPlanes[SkYUVASizeInfo::kMaxCount]) {
sk_sp<SkCachedData> data;
SkYUVPlanesCache::Info yuvInfo;
data.reset(SkYUVPlanesCache::FindAndRef(this->onGetID(), &yuvInfo));
void* planes[SkYUVASizeInfo::kMaxCount];
if (data.get()) {
planes[0] = (void*)data->data(); // we should always have at least one plane
for (int i = 1; i < SkYUVASizeInfo::kMaxCount; ++i) {
if (!yuvInfo.fSizeInfo.fWidthBytes[i]) {
SkASSERT(!yuvInfo.fSizeInfo.fWidthBytes[i] &&
planes[i] = nullptr;
planes[i] = (uint8_t*)planes[i-1] + (yuvInfo.fSizeInfo.fWidthBytes[i-1] *
} else {
// Fetch yuv plane sizes for memory allocation.
if (!this->onQueryYUVA8(&yuvInfo.fSizeInfo, yuvInfo.fYUVAIndices, &yuvInfo.fColorSpace)) {
return nullptr;
// Allocate the memory for YUVA
size_t totalSize(0);
for (int i = 0; i < SkYUVASizeInfo::kMaxCount; i++) {
SkASSERT((yuvInfo.fSizeInfo.fWidthBytes[i] && yuvInfo.fSizeInfo.fSizes[i].fHeight) ||
(!yuvInfo.fSizeInfo.fWidthBytes[i] && !yuvInfo.fSizeInfo.fSizes[i].fHeight));
totalSize += yuvInfo.fSizeInfo.fWidthBytes[i] * yuvInfo.fSizeInfo.fSizes[i].fHeight;
planes[0] = data->writable_data();
for (int i = 1; i < SkYUVASizeInfo::kMaxCount; ++i) {
if (!yuvInfo.fSizeInfo.fWidthBytes[i]) {
SkASSERT(!yuvInfo.fSizeInfo.fWidthBytes[i] &&
planes[i] = nullptr;
planes[i] = (uint8_t*)planes[i-1] + (yuvInfo.fSizeInfo.fWidthBytes[i-1] *
// Get the YUV planes.
if (!this->onGetYUVA8Planes(yuvInfo.fSizeInfo, yuvInfo.fYUVAIndices, planes)) {
return nullptr;
// Decoding is done, cache the resulting YUV planes
SkYUVPlanesCache::Add(this->onGetID(), data.get(), &yuvInfo);
*size = yuvInfo.fSizeInfo;
memcpy(yuvaIndices, yuvInfo.fYUVAIndices, sizeof(yuvInfo.fYUVAIndices));
*colorSpace = yuvInfo.fColorSpace;
constPlanes[0] = planes[0];
constPlanes[1] = planes[1];
constPlanes[2] = planes[2];
constPlanes[3] = planes[3];
return data;
void GrYUVProvider::YUVGen_DataReleaseProc(const void*, void* data) {
SkCachedData* cachedData = static_cast<SkCachedData*>(data);
sk_sp<GrTextureProxy> GrYUVProvider::refAsTextureProxy(GrContext* ctx,
const GrBackendFormat& format,
const GrSurfaceDesc& desc,
SkColorSpace* srcColorSpace,
SkColorSpace* dstColorSpace) {
SkYUVASizeInfo yuvSizeInfo;
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount];
SkYUVColorSpace yuvColorSpace;
const void* planes[SkYUVASizeInfo::kMaxCount];
sk_sp<SkCachedData> dataStorage = this->getPlanes(&yuvSizeInfo, yuvaIndices,
&yuvColorSpace, planes);
if (!dataStorage) {
return nullptr;
sk_sp<GrTextureProxy> yuvTextureProxies[SkYUVASizeInfo::kMaxCount];
for (int i = 0; i < SkYUVASizeInfo::kMaxCount; ++i) {
if (yuvSizeInfo.fSizes[i].isEmpty()) {
int componentWidth = yuvSizeInfo.fSizes[i].fWidth;
int componentHeight = yuvSizeInfo.fSizes[i].fHeight;
// If the sizes of the components are not all the same we choose to create exact-match
// textures for the smaller ones rather than add a texture domain to the draw.
// TODO: revisit this decision to improve texture reuse?
SkBackingFit fit =
(componentWidth != yuvSizeInfo.fSizes[0].fWidth) ||
(componentHeight != yuvSizeInfo.fSizes[0].fHeight)
? SkBackingFit::kExact : SkBackingFit::kApprox;
SkImageInfo imageInfo = SkImageInfo::MakeA8(componentWidth, componentHeight);
SkPixmap pixmap(imageInfo, planes[i], yuvSizeInfo.fWidthBytes[i]);
SkCachedData* dataStoragePtr = dataStorage.get();
// We grab a ref to cached yuv data. When the SkImage we create below goes away it will call
// the YUVGen_DataReleaseProc which will release this ref.
// DDL TODO: Currently we end up creating a lazy proxy that will hold onto a ref to the
// SkImage in its lambda. This means that we'll keep the ref on the YUV data around for the
// life time of the proxy and not just upload. For non-DDL draws we should look into
// releasing this SkImage after uploads (by deleting the lambda after instantiation).
sk_sp<SkImage> yuvImage = SkImage::MakeFromRaster(pixmap, YUVGen_DataReleaseProc,
auto proxyProvider = ctx->priv().proxyProvider();
yuvTextureProxies[i] = proxyProvider->createTextureProxy(yuvImage, kNone_GrSurfaceFlags,
1, SkBudgeted::kYes, fit);
SkASSERT(yuvTextureProxies[i]->width() == yuvSizeInfo.fSizes[i].fWidth);
SkASSERT(yuvTextureProxies[i]->height() == yuvSizeInfo.fSizes[i].fHeight);
// TODO: investigate preallocating mip maps here
sk_sp<GrRenderTargetContext> renderTargetContext(
format, SkBackingFit::kExact, desc.fWidth, desc.fHeight, desc.fConfig, nullptr,
desc.fSampleCnt, GrMipMapped::kNo, kTopLeft_GrSurfaceOrigin));
if (!renderTargetContext) {
return nullptr;
GrPaint paint;
auto yuvToRgbProcessor = GrYUVtoRGBEffect::Make(yuvTextureProxies, yuvaIndices, yuvColorSpace,
// If the caller expects the pixels in a different color space than the one from the image,
// apply a color conversion to do this.
std::unique_ptr<GrFragmentProcessor> colorConversionProcessor =
GrColorSpaceXformEffect::Make(srcColorSpace, kOpaque_SkAlphaType,
dstColorSpace, kOpaque_SkAlphaType);
if (colorConversionProcessor) {
const SkRect r = SkRect::MakeIWH(yuvSizeInfo.fSizes[0].fWidth,
SkMatrix m = SkEncodedOriginToMatrix(yuvSizeInfo.fOrigin, r.width(), r.height());
renderTargetContext->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, m, r);
return renderTargetContext->asTextureProxyRef();