nsresult imgFrame::Init(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight,
SurfaceFormat aFormat, uint8_t aPaletteDepth /* = 0 */)
{
// assert for properties that should be verified by decoders, warn for properties related to bad content
if (!AllowedImageSize(aWidth, aHeight)) {
NS_WARNING("Should have legal image size");
return NS_ERROR_FAILURE;
}
mOffset.MoveTo(aX, aY);
mSize.SizeTo(aWidth, aHeight);
mFormat = aFormat;
mPaletteDepth = aPaletteDepth;
if (aPaletteDepth != 0) {
// We're creating for a paletted image.
if (aPaletteDepth > 8) {
NS_WARNING("Should have legal palette depth");
NS_ERROR("This Depth is not supported");
return NS_ERROR_FAILURE;
}
// Use the fallible allocator here
mPalettedImageData = (uint8_t*)moz_malloc(PaletteDataLength() + GetImageDataLength());
if (!mPalettedImageData)
NS_WARNING("moz_malloc for paletted image data should succeed");
NS_ENSURE_TRUE(mPalettedImageData, NS_ERROR_OUT_OF_MEMORY);
} else {
// Inform the discard tracker that we are going to allocate some memory.
if (!DiscardTracker::TryAllocation(4 * mSize.width * mSize.height)) {
NS_WARNING("Exceed the hard limit of decode image size");
return NS_ERROR_OUT_OF_MEMORY;
}
if (!mImageSurface) {
mVBuf = AllocateBufferForImage(mSize, mFormat);
if (!mVBuf) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (mVBuf->OnHeap()) {
int32_t stride = VolatileSurfaceStride(mSize, mFormat);
VolatileBufferPtr<uint8_t> ptr(mVBuf);
memset(ptr, 0, stride * mSize.height);
}
mImageSurface = CreateLockedSurface(mVBuf, mSize, mFormat);
}
if (!mImageSurface) {
NS_WARNING("Failed to create VolatileDataSourceSurface");
// Image surface allocation is failed, need to return
// the booked buffer size.
DiscardTracker::InformDeallocation(4 * mSize.width * mSize.height);
return NS_ERROR_OUT_OF_MEMORY;
}
mInformedDiscardTracker = true;
}
return NS_OK;
}
nsresult
imgFrame::InitWithDrawable(gfxDrawable* aDrawable,
const nsIntSize& aSize,
const SurfaceFormat aFormat,
GraphicsFilter aFilter,
uint32_t aImageFlags)
{
// Assert for properties that should be verified by decoders,
// warn for properties related to bad content.
if (!AllowedImageSize(aSize.width, aSize.height)) {
NS_WARNING("Should have legal image size");
mAborted = true;
return NS_ERROR_FAILURE;
}
mImageSize = aSize;
mOffset.MoveTo(0, 0);
mSize.SizeTo(aSize.width, aSize.height);
mFormat = aFormat;
mPaletteDepth = 0;
RefPtr<DrawTarget> target;
bool canUseDataSurface =
gfxPlatform::GetPlatform()->CanRenderContentToDataSurface();
if (canUseDataSurface) {
// It's safe to use data surfaces for content on this platform, so we can
// get away with using volatile buffers.
MOZ_ASSERT(!mImageSurface, "Called imgFrame::InitWithDrawable() twice?");
mVBuf = AllocateBufferForImage(mSize, mFormat);
if (!mVBuf) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
int32_t stride = VolatileSurfaceStride(mSize, mFormat);
VolatileBufferPtr<uint8_t> ptr(mVBuf);
if (!ptr) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
if (mVBuf->OnHeap()) {
memset(ptr, 0, stride * mSize.height);
}
mImageSurface = CreateLockedSurface(mVBuf, mSize, mFormat);
target = gfxPlatform::GetPlatform()->
CreateDrawTargetForData(ptr, mSize, stride, mFormat);
} else {
// We can't use data surfaces for content, so we'll create an offscreen
// surface instead. This means if someone later calls RawAccessRef(), we
// may have to do an expensive readback, but we warned callers about that in
// the documentation for this method.
MOZ_ASSERT(!mOptSurface, "Called imgFrame::InitWithDrawable() twice?");
target = gfxPlatform::GetPlatform()->
CreateOffscreenContentDrawTarget(mSize, mFormat);
}
if (!target) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
// Draw using the drawable the caller provided.
nsIntRect imageRect(0, 0, mSize.width, mSize.height);
nsRefPtr<gfxContext> ctx = new gfxContext(target);
gfxUtils::DrawPixelSnapped(ctx, aDrawable, mSize,
ImageRegion::Create(imageRect),
mFormat, aFilter, aImageFlags);
if (canUseDataSurface && !mImageSurface) {
NS_WARNING("Failed to create VolatileDataSourceSurface");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
if (!canUseDataSurface) {
// We used an offscreen surface, which is an "optimized" surface from
// imgFrame's perspective.
mOptSurface = target->Snapshot();
}
// If we reach this point, we should regard ourselves as complete.
mDecoded = GetRect();
MOZ_ASSERT(IsImageComplete());
return NS_OK;
}
nsresult
imgFrame::InitForDecoder(const nsIntSize& aImageSize,
const nsIntRect& aRect,
SurfaceFormat aFormat,
uint8_t aPaletteDepth /* = 0 */,
bool aNonPremult /* = false */)
{
// Assert for properties that should be verified by decoders,
// warn for properties related to bad content.
if (!AllowedImageAndFrameDimensions(aImageSize, aRect)) {
NS_WARNING("Should have legal image size");
mAborted = true;
return NS_ERROR_FAILURE;
}
mImageSize = aImageSize;
mOffset.MoveTo(aRect.x, aRect.y);
mSize.SizeTo(aRect.width, aRect.height);
mFormat = aFormat;
mPaletteDepth = aPaletteDepth;
mNonPremult = aNonPremult;
if (aPaletteDepth != 0) {
// We're creating for a paletted image.
if (aPaletteDepth > 8) {
NS_WARNING("Should have legal palette depth");
NS_ERROR("This Depth is not supported");
mAborted = true;
return NS_ERROR_FAILURE;
}
// Use the fallible allocator here. Paletted images always use 1 byte per
// pixel, so calculating the amount of memory we need is straightforward.
mPalettedImageData =
static_cast<uint8_t*>(malloc(PaletteDataLength() +
(mSize.width * mSize.height)));
if (!mPalettedImageData) {
NS_WARNING("malloc for paletted image data should succeed");
}
NS_ENSURE_TRUE(mPalettedImageData, NS_ERROR_OUT_OF_MEMORY);
} else {
MOZ_ASSERT(!mImageSurface, "Called imgFrame::InitForDecoder() twice?");
mVBuf = AllocateBufferForImage(mSize, mFormat);
if (!mVBuf) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
if (mVBuf->OnHeap()) {
int32_t stride = VolatileSurfaceStride(mSize, mFormat);
VolatileBufferPtr<uint8_t> ptr(mVBuf);
memset(ptr, 0, stride * mSize.height);
}
mImageSurface = CreateLockedSurface(mVBuf, mSize, mFormat);
if (!mImageSurface) {
NS_WARNING("Failed to create VolatileDataSourceSurface");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
}
return NS_OK;
}
nsresult
imgFrame::Optimize()
{
MOZ_ASSERT(NS_IsMainThread());
mMonitor.AssertCurrentThreadOwns();
MOZ_ASSERT(mLockCount == 1,
"Should only optimize when holding the lock exclusively");
// Check whether image optimization is disabled -- not thread safe!
static bool gDisableOptimize = false;
static bool hasCheckedOptimize = false;
if (!hasCheckedOptimize) {
if (PR_GetEnv("MOZ_DISABLE_IMAGE_OPTIMIZE")) {
gDisableOptimize = true;
}
hasCheckedOptimize = true;
}
// Don't optimize during shutdown because gfxPlatform may not be available.
if (ShutdownTracker::ShutdownHasStarted()) {
return NS_OK;
}
// This optimization is basically free, so we perform it even if optimization is disabled.
if (CanOptimizeOpaqueImage()) {
mFormat = SurfaceFormat::B8G8R8X8;
mImageSurface = CreateLockedSurface(mVBuf, mFrameRect.Size(), mFormat);
}
if (!mOptimizable || gDisableOptimize) {
return NS_OK;
}
if (mPalettedImageData || mOptSurface || mSinglePixel) {
return NS_OK;
}
// Don't do single-color opts on non-premult data.
// Cairo doesn't support non-premult single-colors.
if (mNonPremult) {
return NS_OK;
}
/* Figure out if the entire image is a constant color */
if (gfxPrefs::ImageSingleColorOptimizationEnabled() &&
mImageSurface->Stride() == mFrameRect.width * 4) {
uint32_t* imgData = (uint32_t*) ((uint8_t*) mVBufPtr);
uint32_t firstPixel = * (uint32_t*) imgData;
uint32_t pixelCount = mFrameRect.Area() + 1;
while (--pixelCount && *imgData++ == firstPixel)
;
if (pixelCount == 0) {
// all pixels were the same
if (mFormat == SurfaceFormat::B8G8R8A8 ||
mFormat == SurfaceFormat::B8G8R8X8) {
mSinglePixel = true;
mSinglePixelColor.a = ((firstPixel >> 24) & 0xFF) * (1.0f / 255.0f);
mSinglePixelColor.r = ((firstPixel >> 16) & 0xFF) * (1.0f / 255.0f);
mSinglePixelColor.g = ((firstPixel >> 8) & 0xFF) * (1.0f / 255.0f);
mSinglePixelColor.b = ((firstPixel >> 0) & 0xFF) * (1.0f / 255.0f);
mSinglePixelColor.r /= mSinglePixelColor.a;
mSinglePixelColor.g /= mSinglePixelColor.a;
mSinglePixelColor.b /= mSinglePixelColor.a;
// blow away the older surfaces (if they exist), to release their memory
mVBuf = nullptr;
mVBufPtr = nullptr;
mImageSurface = nullptr;
mOptSurface = nullptr;
return NS_OK;
}
}
nsresult
imgFrame::InitWithDrawable(gfxDrawable* aDrawable,
const nsIntSize& aSize,
const SurfaceFormat aFormat,
SamplingFilter aSamplingFilter,
uint32_t aImageFlags)
{
// Assert for properties that should be verified by decoders,
// warn for properties related to bad content.
if (!AllowedImageSize(aSize.width, aSize.height)) {
NS_WARNING("Should have legal image size");
mAborted = true;
return NS_ERROR_FAILURE;
}
mImageSize = aSize;
mFrameRect = IntRect(IntPoint(0, 0), aSize);
mFormat = aFormat;
mPaletteDepth = 0;
RefPtr<DrawTarget> target;
bool canUseDataSurface =
gfxPlatform::GetPlatform()->CanRenderContentToDataSurface();
if (canUseDataSurface) {
// It's safe to use data surfaces for content on this platform, so we can
// get away with using volatile buffers.
MOZ_ASSERT(!mImageSurface, "Called imgFrame::InitWithDrawable() twice?");
mVBuf = AllocateBufferForImage(mFrameRect.Size(), mFormat);
if (!mVBuf) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
int32_t stride = VolatileSurfaceStride(mFrameRect.Size(), mFormat);
VolatileBufferPtr<uint8_t> ptr(mVBuf);
if (!ptr) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
mImageSurface = CreateLockedSurface(mVBuf, mFrameRect.Size(), mFormat);
if (!mImageSurface) {
NS_WARNING("Failed to create ImageSurface");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
if (!ClearSurface(mVBuf, mFrameRect.Size(), mFormat)) {
NS_WARNING("Could not clear allocated buffer");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
target = gfxPlatform::GetPlatform()->
CreateDrawTargetForData(ptr, mFrameRect.Size(), stride, mFormat);
} else {
// We can't use data surfaces for content, so we'll create an offscreen
// surface instead. This means if someone later calls RawAccessRef(), we
// may have to do an expensive readback, but we warned callers about that in
// the documentation for this method.
MOZ_ASSERT(!mOptSurface, "Called imgFrame::InitWithDrawable() twice?");
target = gfxPlatform::GetPlatform()->
CreateOffscreenContentDrawTarget(mFrameRect.Size(), mFormat);
}
if (!target || !target->IsValid()) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
// Draw using the drawable the caller provided.
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(target);
MOZ_ASSERT(ctx); // Already checked the draw target above.
gfxUtils::DrawPixelSnapped(ctx, aDrawable, mFrameRect.Size(),
ImageRegion::Create(ThebesRect(mFrameRect)),
mFormat, aSamplingFilter, aImageFlags);
if (canUseDataSurface && !mImageSurface) {
NS_WARNING("Failed to create VolatileDataSourceSurface");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
if (!canUseDataSurface) {
// We used an offscreen surface, which is an "optimized" surface from
// imgFrame's perspective.
mOptSurface = target->Snapshot();
}
// If we reach this point, we should regard ourselves as complete.
mDecoded = GetRect();
mFinished = true;
#ifdef DEBUG
MonitorAutoLock lock(mMonitor);
MOZ_ASSERT(AreAllPixelsWritten());
#endif
return NS_OK;
}
nsresult
imgFrame::InitForDecoder(const nsIntSize& aImageSize,
const nsIntRect& aRect,
SurfaceFormat aFormat,
uint8_t aPaletteDepth /* = 0 */,
bool aNonPremult /* = false */)
{
// Assert for properties that should be verified by decoders,
// warn for properties related to bad content.
if (!AllowedImageAndFrameDimensions(aImageSize, aRect)) {
NS_WARNING("Should have legal image size");
mAborted = true;
return NS_ERROR_FAILURE;
}
mImageSize = aImageSize;
mFrameRect = aRect;
mFormat = aFormat;
mPaletteDepth = aPaletteDepth;
mNonPremult = aNonPremult;
if (aPaletteDepth != 0) {
// We're creating for a paletted image.
if (aPaletteDepth > 8) {
NS_WARNING("Should have legal palette depth");
NS_ERROR("This Depth is not supported");
mAborted = true;
return NS_ERROR_FAILURE;
}
// Use the fallible allocator here. Paletted images always use 1 byte per
// pixel, so calculating the amount of memory we need is straightforward.
size_t dataSize = PaletteDataLength() + mFrameRect.Area();
mPalettedImageData = static_cast<uint8_t*>(calloc(dataSize, sizeof(uint8_t)));
if (!mPalettedImageData) {
NS_WARNING("Call to calloc for paletted image data should succeed");
}
NS_ENSURE_TRUE(mPalettedImageData, NS_ERROR_OUT_OF_MEMORY);
} else {
MOZ_ASSERT(!mImageSurface, "Called imgFrame::InitForDecoder() twice?");
mVBuf = AllocateBufferForImage(mFrameRect.Size(), mFormat);
if (!mVBuf) {
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
mImageSurface = CreateLockedSurface(mVBuf, mFrameRect.Size(), mFormat);
if (!mImageSurface) {
NS_WARNING("Failed to create ImageSurface");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
if (!ClearSurface(mVBuf, mFrameRect.Size(), mFormat)) {
NS_WARNING("Could not clear allocated buffer");
mAborted = true;
return NS_ERROR_OUT_OF_MEMORY;
}
}
return NS_OK;
}
