gecko/gfx/thebes/gfxASurface.cpp
Ehsan Akhgari 6220f98ec6 Backed out 9 changesets (bug 943660, bug 936964) because of ASAN use-after-free crashes on browser-chrome and mochitest-other
Backed out changeset 85486c4aa3d8 (bug 936964)
Backed out changeset 25312eb71998 (bug 936964)
Backed out changeset 6dbb8333960c (bug 936964)
Backed out changeset da6465ad476f (bug 936964)
Backed out changeset a87ffc992f38 (bug 936964)
Backed out changeset 4ae3a61182db (bug 936964)
Backed out changeset 34e9c3137804 (bug 936964)
Backed out changeset fd1459e71585 (bug 936964)
Backed out changeset 3e8a701d8bdc (bug 943660)

Landed on a CLOSED TREE

--HG--
rename : content/canvas/src/WebGLMemoryTracker.h => content/canvas/src/WebGLMemoryReporterWrapper.h
2013-11-27 20:05:00 -05:00

946 lines
24 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsIMemoryReporter.h"
#include "nsMemory.h"
#include "mozilla/Base64.h"
#include "mozilla/CheckedInt.h"
#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"
#include "nsTraceRefcnt.h"
#include "mozilla/gfx/2D.h"
#include "gfxASurface.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "gfxPlatform.h"
#include "gfxRect.h"
#include "cairo.h"
#include <algorithm>
#ifdef CAIRO_HAS_WIN32_SURFACE
#include "gfxWindowsSurface.h"
#endif
#ifdef CAIRO_HAS_D2D_SURFACE
#include "gfxD2DSurface.h"
#endif
#ifdef MOZ_X11
#include "gfxXlibSurface.h"
#endif
#ifdef CAIRO_HAS_QUARTZ_SURFACE
#include "gfxQuartzSurface.h"
#include "gfxQuartzImageSurface.h"
#endif
#if defined(CAIRO_HAS_QT_SURFACE) && defined(MOZ_WIDGET_QT)
#include "gfxQPainterSurface.h"
#endif
#include <stdio.h>
#include <limits.h>
#include "imgIEncoder.h"
#include "nsComponentManagerUtils.h"
#include "nsISupportsUtils.h"
#include "nsCOMPtr.h"
#include "nsServiceManagerUtils.h"
#include "nsString.h"
#include "nsIClipboardHelper.h"
using namespace mozilla;
using namespace mozilla::gfx;
static cairo_user_data_key_t gfxasurface_pointer_key;
gfxASurface::gfxASurface()
: mSurface(nullptr), mFloatingRefs(0), mBytesRecorded(0),
mSurfaceValid(false), mAllowUseAsSource(true)
{
MOZ_COUNT_CTOR(gfxASurface);
}
gfxASurface::~gfxASurface()
{
RecordMemoryFreed();
MOZ_COUNT_DTOR(gfxASurface);
}
// Surfaces use refcounting that's tied to the cairo surface refcnt, to avoid
// refcount mismatch issues.
nsrefcnt
gfxASurface::AddRef(void)
{
if (mSurfaceValid) {
if (mFloatingRefs) {
// eat a floating ref
mFloatingRefs--;
} else {
cairo_surface_reference(mSurface);
}
return (nsrefcnt) cairo_surface_get_reference_count(mSurface);
} else {
// the surface isn't valid, but we still need to refcount
// the gfxASurface
return ++mFloatingRefs;
}
}
nsrefcnt
gfxASurface::Release(void)
{
if (mSurfaceValid) {
NS_ASSERTION(mFloatingRefs == 0, "gfxASurface::Release with floating refs still hanging around!");
// Note that there is a destructor set on user data for mSurface,
// which will delete this gfxASurface wrapper when the surface's refcount goes
// out of scope.
nsrefcnt refcnt = (nsrefcnt) cairo_surface_get_reference_count(mSurface);
cairo_surface_destroy(mSurface);
// |this| may not be valid any more, don't use it!
return --refcnt;
} else {
if (--mFloatingRefs == 0) {
delete this;
return 0;
}
return mFloatingRefs;
}
}
nsrefcnt
gfxASurface::AddRefExternal(void)
{
return AddRef();
}
nsrefcnt
gfxASurface::ReleaseExternal(void)
{
return Release();
}
void
gfxASurface::SurfaceDestroyFunc(void *data) {
gfxASurface *surf = (gfxASurface*) data;
// fprintf (stderr, "Deleting wrapper for %p (wrapper: %p)\n", surf->mSurface, data);
delete surf;
}
gfxASurface*
gfxASurface::GetSurfaceWrapper(cairo_surface_t *csurf)
{
if (!csurf)
return nullptr;
return (gfxASurface*) cairo_surface_get_user_data(csurf, &gfxasurface_pointer_key);
}
void
gfxASurface::SetSurfaceWrapper(cairo_surface_t *csurf, gfxASurface *asurf)
{
if (!csurf)
return;
cairo_surface_set_user_data(csurf, &gfxasurface_pointer_key, asurf, SurfaceDestroyFunc);
}
already_AddRefed<gfxASurface>
gfxASurface::Wrap (cairo_surface_t *csurf)
{
nsRefPtr<gfxASurface> result;
/* Do we already have a wrapper for this surface? */
result = GetSurfaceWrapper(csurf);
if (result) {
// fprintf(stderr, "Existing wrapper for %p -> %p\n", csurf, result);
return result.forget();
}
/* No wrapper; figure out the surface type and create it */
cairo_surface_type_t stype = cairo_surface_get_type(csurf);
if (stype == CAIRO_SURFACE_TYPE_IMAGE) {
result = new gfxImageSurface(csurf);
}
#ifdef CAIRO_HAS_WIN32_SURFACE
else if (stype == CAIRO_SURFACE_TYPE_WIN32 ||
stype == CAIRO_SURFACE_TYPE_WIN32_PRINTING) {
result = new gfxWindowsSurface(csurf);
}
#endif
#ifdef CAIRO_HAS_D2D_SURFACE
else if (stype == CAIRO_SURFACE_TYPE_D2D) {
result = new gfxD2DSurface(csurf);
}
#endif
#ifdef MOZ_X11
else if (stype == CAIRO_SURFACE_TYPE_XLIB) {
result = new gfxXlibSurface(csurf);
}
#endif
#ifdef CAIRO_HAS_QUARTZ_SURFACE
else if (stype == CAIRO_SURFACE_TYPE_QUARTZ) {
result = new gfxQuartzSurface(csurf);
}
else if (stype == CAIRO_SURFACE_TYPE_QUARTZ_IMAGE) {
result = new gfxQuartzImageSurface(csurf);
}
#endif
#if defined(CAIRO_HAS_QT_SURFACE) && defined(MOZ_WIDGET_QT)
else if (stype == CAIRO_SURFACE_TYPE_QT) {
result = new gfxQPainterSurface(csurf);
}
#endif
else {
result = new gfxUnknownSurface(csurf);
}
// fprintf(stderr, "New wrapper for %p -> %p\n", csurf, result);
return result.forget();
}
void
gfxASurface::Init(cairo_surface_t* surface, bool existingSurface)
{
SetSurfaceWrapper(surface, this);
mSurface = surface;
mSurfaceValid = surface && !cairo_surface_status(surface);
if (existingSurface || !mSurfaceValid) {
mFloatingRefs = 0;
} else {
mFloatingRefs = 1;
#ifdef MOZ_TREE_CAIRO
if (cairo_surface_get_content(surface) != CAIRO_CONTENT_COLOR) {
cairo_surface_set_subpixel_antialiasing(surface, CAIRO_SUBPIXEL_ANTIALIASING_DISABLED);
}
#endif
}
}
gfxSurfaceType
gfxASurface::GetType() const
{
if (!mSurfaceValid)
return (gfxSurfaceType)-1;
return (gfxSurfaceType)cairo_surface_get_type(mSurface);
}
gfxContentType
gfxASurface::GetContentType() const
{
if (!mSurfaceValid)
return (gfxContentType)-1;
return (gfxContentType)cairo_surface_get_content(mSurface);
}
void
gfxASurface::SetDeviceOffset(const gfxPoint& offset)
{
if (!mSurfaceValid)
return;
cairo_surface_set_device_offset(mSurface,
offset.x, offset.y);
}
gfxPoint
gfxASurface::GetDeviceOffset() const
{
if (!mSurfaceValid)
return gfxPoint(0.0, 0.0);
gfxPoint pt;
cairo_surface_get_device_offset(mSurface, &pt.x, &pt.y);
return pt;
}
void
gfxASurface::Flush() const
{
if (!mSurfaceValid)
return;
cairo_surface_flush(mSurface);
gfxPlatform::ClearSourceSurfaceForSurface(const_cast<gfxASurface*>(this));
}
void
gfxASurface::MarkDirty()
{
if (!mSurfaceValid)
return;
cairo_surface_mark_dirty(mSurface);
gfxPlatform::ClearSourceSurfaceForSurface(this);
}
void
gfxASurface::MarkDirty(const gfxRect& r)
{
if (!mSurfaceValid)
return;
cairo_surface_mark_dirty_rectangle(mSurface,
(int) r.X(), (int) r.Y(),
(int) r.Width(), (int) r.Height());
gfxPlatform::ClearSourceSurfaceForSurface(this);
}
void
gfxASurface::SetData(const cairo_user_data_key_t *key,
void *user_data,
thebes_destroy_func_t destroy)
{
if (!mSurfaceValid)
return;
cairo_surface_set_user_data(mSurface, key, user_data, destroy);
}
void *
gfxASurface::GetData(const cairo_user_data_key_t *key)
{
if (!mSurfaceValid)
return nullptr;
return cairo_surface_get_user_data(mSurface, key);
}
void
gfxASurface::Finish()
{
// null surfaces are allowed here
cairo_surface_finish(mSurface);
}
already_AddRefed<gfxASurface>
gfxASurface::CreateSimilarSurface(gfxContentType aContent,
const nsIntSize& aSize)
{
if (!mSurface || !mSurfaceValid) {
return nullptr;
}
cairo_surface_t *surface =
cairo_surface_create_similar(mSurface, cairo_content_t(aContent),
aSize.width, aSize.height);
if (cairo_surface_status(surface)) {
cairo_surface_destroy(surface);
return nullptr;
}
nsRefPtr<gfxASurface> result = Wrap(surface);
cairo_surface_destroy(surface);
return result.forget();
}
already_AddRefed<gfxImageSurface>
gfxASurface::GetAsReadableARGB32ImageSurface()
{
nsRefPtr<gfxImageSurface> imgSurface = GetAsImageSurface();
if (!imgSurface || imgSurface->Format() != gfxImageFormatARGB32) {
imgSurface = CopyToARGB32ImageSurface();
}
return imgSurface.forget();
}
already_AddRefed<gfxImageSurface>
gfxASurface::CopyToARGB32ImageSurface()
{
if (!mSurface || !mSurfaceValid) {
return nullptr;
}
const nsIntSize size = GetSize();
nsRefPtr<gfxImageSurface> imgSurface =
new gfxImageSurface(size, gfxImageFormatARGB32);
if (gfxPlatform::GetPlatform()->SupportsAzureContent()) {
RefPtr<DrawTarget> dt = gfxPlatform::GetPlatform()->CreateDrawTargetForSurface(imgSurface, IntSize(size.width, size.height));
RefPtr<SourceSurface> source = gfxPlatform::GetPlatform()->GetSourceSurfaceForSurface(dt, this);
dt->CopySurface(source, IntRect(0, 0, size.width, size.height), IntPoint());
} else {
gfxContext ctx(imgSurface);
ctx.SetOperator(gfxContext::OPERATOR_SOURCE);
ctx.SetSource(this);
ctx.Paint();
}
return imgSurface.forget();
}
int
gfxASurface::CairoStatus()
{
if (!mSurfaceValid)
return -1;
return cairo_surface_status(mSurface);
}
/* static */
bool
gfxASurface::CheckSurfaceSize(const nsIntSize& sz, int32_t limit)
{
if (sz.width < 0 || sz.height < 0) {
NS_WARNING("Surface width or height < 0!");
return false;
}
// reject images with sides bigger than limit
if (limit && (sz.width > limit || sz.height > limit)) {
NS_WARNING("Surface size too large (exceeds caller's limit)!");
return false;
}
#if defined(XP_MACOSX)
// CoreGraphics is limited to images < 32K in *height*,
// so clamp all surfaces on the Mac to that height
if (sz.height > SHRT_MAX) {
NS_WARNING("Surface size too large (exceeds CoreGraphics limit)!");
return false;
}
#endif
// make sure the surface area doesn't overflow a int32_t
CheckedInt<int32_t> tmp = sz.width;
tmp *= sz.height;
if (!tmp.isValid()) {
NS_WARNING("Surface size too large (would overflow)!");
return false;
}
// assuming 4-byte stride, make sure the allocation size
// doesn't overflow a int32_t either
tmp *= 4;
if (!tmp.isValid()) {
NS_WARNING("Allocation too large (would overflow)!");
return false;
}
return true;
}
/* static */
int32_t
gfxASurface::FormatStrideForWidth(gfxImageFormat format, int32_t width)
{
return cairo_format_stride_for_width((cairo_format_t)format, (int)width);
}
nsresult
gfxASurface::BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName)
{
return NS_OK;
}
nsresult
gfxASurface::EndPrinting()
{
return NS_OK;
}
nsresult
gfxASurface::AbortPrinting()
{
return NS_OK;
}
nsresult
gfxASurface::BeginPage()
{
return NS_OK;
}
nsresult
gfxASurface::EndPage()
{
return NS_OK;
}
gfxContentType
gfxASurface::ContentFromFormat(gfxImageFormat format)
{
switch (format) {
case gfxImageFormatARGB32:
return GFX_CONTENT_COLOR_ALPHA;
case gfxImageFormatRGB24:
case gfxImageFormatRGB16_565:
return GFX_CONTENT_COLOR;
case gfxImageFormatA8:
case gfxImageFormatA1:
return GFX_CONTENT_ALPHA;
case gfxImageFormatUnknown:
default:
return GFX_CONTENT_COLOR;
}
}
void
gfxASurface::SetSubpixelAntialiasingEnabled(bool aEnabled)
{
#ifdef MOZ_TREE_CAIRO
if (!mSurfaceValid)
return;
cairo_surface_set_subpixel_antialiasing(mSurface,
aEnabled ? CAIRO_SUBPIXEL_ANTIALIASING_ENABLED : CAIRO_SUBPIXEL_ANTIALIASING_DISABLED);
#endif
}
bool
gfxASurface::GetSubpixelAntialiasingEnabled()
{
if (!mSurfaceValid)
return false;
#ifdef MOZ_TREE_CAIRO
return cairo_surface_get_subpixel_antialiasing(mSurface) == CAIRO_SUBPIXEL_ANTIALIASING_ENABLED;
#else
return true;
#endif
}
gfxMemoryLocation
gfxASurface::GetMemoryLocation() const
{
return GFX_MEMORY_IN_PROCESS_HEAP;
}
int32_t
gfxASurface::BytePerPixelFromFormat(gfxImageFormat format)
{
switch (format) {
case gfxImageFormatARGB32:
case gfxImageFormatRGB24:
return 4;
case gfxImageFormatRGB16_565:
return 2;
case gfxImageFormatA8:
return 1;
default:
NS_WARNING("Unknown byte per pixel value for Image format");
}
return 0;
}
void
gfxASurface::FastMovePixels(const nsIntRect& aSourceRect,
const nsIntPoint& aDestTopLeft)
{
// Used when the backend can internally handle self copies.
nsIntRect dest(aDestTopLeft, aSourceRect.Size());
nsRefPtr<gfxContext> ctx = new gfxContext(this);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
nsIntPoint srcOrigin = dest.TopLeft() - aSourceRect.TopLeft();
ctx->SetSource(this, gfxPoint(srcOrigin.x, srcOrigin.y));
ctx->Rectangle(gfxRect(dest.x, dest.y, dest.width, dest.height));
ctx->Fill();
}
void
gfxASurface::MovePixels(const nsIntRect& aSourceRect,
const nsIntPoint& aDestTopLeft)
{
// Assume the backend can't handle self copying well and allocate
// a temporary surface instead.
nsRefPtr<gfxASurface> tmp =
CreateSimilarSurface(GetContentType(),
nsIntSize(aSourceRect.width, aSourceRect.height));
// CreateSimilarSurface can return nullptr if the current surface is
// in an error state. This isn't good, but its better to carry
// on with the error surface instead of crashing.
NS_WARN_IF_FALSE(tmp, "Must have temporary surface to move pixels!");
if (!tmp) {
return;
}
nsRefPtr<gfxContext> ctx = new gfxContext(tmp);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(this, gfxPoint(-aSourceRect.x, -aSourceRect.y));
ctx->Paint();
ctx = new gfxContext(this);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(tmp, gfxPoint(aDestTopLeft.x, aDestTopLeft.y));
ctx->Rectangle(gfxRect(aDestTopLeft.x,
aDestTopLeft.y,
aSourceRect.width,
aSourceRect.height));
ctx->Fill();
}
/** Memory reporting **/
static const char *sDefaultSurfaceDescription =
"Memory used by gfx surface of the given type.";
struct SurfaceMemoryReporterAttrs {
const char *path;
const char *description;
};
static const SurfaceMemoryReporterAttrs sSurfaceMemoryReporterAttrs[] = {
{"gfx-surface-image", nullptr},
{"gfx-surface-pdf", nullptr},
{"gfx-surface-ps", nullptr},
{"gfx-surface-xlib",
"Memory used by xlib surfaces to store pixmaps. This memory lives in "
"the X server's process rather than in this application, so the bytes "
"accounted for here aren't counted in vsize, resident, explicit, or any of "
"the other measurements on this page."},
{"gfx-surface-xcb", nullptr},
{"gfx-surface-glitz???", nullptr}, // should never be used
{"gfx-surface-quartz", nullptr},
{"gfx-surface-win32", nullptr},
{"gfx-surface-beos", nullptr},
{"gfx-surface-directfb???", nullptr}, // should never be used
{"gfx-surface-svg", nullptr},
{"gfx-surface-os2", nullptr},
{"gfx-surface-win32printing", nullptr},
{"gfx-surface-quartzimage", nullptr},
{"gfx-surface-script", nullptr},
{"gfx-surface-qpainter", nullptr},
{"gfx-surface-recording", nullptr},
{"gfx-surface-vg", nullptr},
{"gfx-surface-gl", nullptr},
{"gfx-surface-drm", nullptr},
{"gfx-surface-tee", nullptr},
{"gfx-surface-xml", nullptr},
{"gfx-surface-skia", nullptr},
{"gfx-surface-subsurface", nullptr},
{"gfx-surface-d2d", nullptr},
};
PR_STATIC_ASSERT(NS_ARRAY_LENGTH(sSurfaceMemoryReporterAttrs) ==
gfxSurfaceTypeMax);
#ifdef CAIRO_HAS_D2D_SURFACE
PR_STATIC_ASSERT(uint32_t(CAIRO_SURFACE_TYPE_D2D) ==
uint32_t(gfxSurfaceTypeD2D));
#endif
PR_STATIC_ASSERT(uint32_t(CAIRO_SURFACE_TYPE_SKIA) ==
uint32_t(gfxSurfaceTypeSkia));
/* Surface size memory reporting */
static int64_t gSurfaceMemoryUsed[gfxSurfaceTypeMax] = { 0 };
class SurfaceMemoryReporter MOZ_FINAL : public MemoryMultiReporter
{
public:
SurfaceMemoryReporter()
: MemoryMultiReporter("gfx-surface")
{ }
NS_IMETHOD CollectReports(nsIMemoryReporterCallback *aCb,
nsISupports *aClosure)
{
size_t len = NS_ARRAY_LENGTH(sSurfaceMemoryReporterAttrs);
for (size_t i = 0; i < len; i++) {
int64_t amount = gSurfaceMemoryUsed[i];
if (amount != 0) {
const char *path = sSurfaceMemoryReporterAttrs[i].path;
const char *desc = sSurfaceMemoryReporterAttrs[i].description;
if (!desc) {
desc = sDefaultSurfaceDescription;
}
nsresult rv = aCb->Callback(EmptyCString(), nsCString(path),
nsIMemoryReporter::KIND_OTHER,
nsIMemoryReporter::UNITS_BYTES,
gSurfaceMemoryUsed[i],
nsCString(desc), aClosure);
NS_ENSURE_SUCCESS(rv, rv);
}
}
return NS_OK;
}
};
void
gfxASurface::RecordMemoryUsedForSurfaceType(gfxSurfaceType aType,
int32_t aBytes)
{
if (aType < 0 || aType >= gfxSurfaceTypeMax) {
NS_WARNING("Invalid type to RecordMemoryUsedForSurfaceType!");
return;
}
static bool registered = false;
if (!registered) {
RegisterStrongMemoryReporter(new SurfaceMemoryReporter());
registered = true;
}
gSurfaceMemoryUsed[aType] += aBytes;
}
void
gfxASurface::RecordMemoryUsed(int32_t aBytes)
{
RecordMemoryUsedForSurfaceType(GetType(), aBytes);
mBytesRecorded += aBytes;
}
void
gfxASurface::RecordMemoryFreed()
{
if (mBytesRecorded) {
RecordMemoryUsedForSurfaceType(GetType(), -mBytesRecorded);
mBytesRecorded = 0;
}
}
size_t
gfxASurface::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
{
// We don't measure mSurface because cairo doesn't allow it.
return 0;
}
size_t
gfxASurface::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
{
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
/* static */ uint8_t
gfxASurface::BytesPerPixel(gfxImageFormat aImageFormat)
{
switch (aImageFormat) {
case gfxImageFormatARGB32:
return 4;
case gfxImageFormatRGB24:
return 4;
case gfxImageFormatRGB16_565:
return 2;
case gfxImageFormatA8:
return 1;
case gfxImageFormatA1:
return 1; // Close enough
case gfxImageFormatUnknown:
default:
NS_NOTREACHED("Not really sure what you want me to say here");
return 0;
}
}
void
gfxASurface::WriteAsPNG(const char* aFile)
{
FILE *file = fopen(aFile, "wb");
if (file) {
WriteAsPNG_internal(file, true);
fclose(file);
} else {
NS_WARNING("Failed to create file!\n");
}
}
void
gfxASurface::DumpAsDataURL(FILE* aOutput)
{
WriteAsPNG_internal(aOutput, false);
}
void
gfxASurface::PrintAsDataURL()
{
WriteAsPNG_internal(stdout, false);
fprintf(stdout, "\n");
}
void
gfxASurface::CopyAsDataURL()
{
WriteAsPNG_internal(nullptr, false);
}
/**
* Write to a PNG file. If aBinary is true, then it is written
* as binary, otherwise as a data URL. If no file is specified then
* data is copied to the clipboard (must not be binary!).
*/
void
gfxASurface::WriteAsPNG_internal(FILE* aFile, bool aBinary)
{
nsRefPtr<gfxImageSurface> imgsurf = GetAsImageSurface();
nsIntSize size;
// FIXME/bug 831898: hack r5g6b5 for now.
if (!imgsurf || imgsurf->Format() == gfxImageFormatRGB16_565) {
size = GetSize();
if (size.width == -1 && size.height == -1) {
printf("Could not determine surface size\n");
return;
}
imgsurf =
new gfxImageSurface(nsIntSize(size.width, size.height),
gfxImageFormatARGB32);
if (!imgsurf || imgsurf->CairoStatus()) {
printf("Could not allocate image surface\n");
return;
}
nsRefPtr<gfxContext> ctx = new gfxContext(imgsurf);
if (!ctx || ctx->HasError()) {
printf("Could not allocate image context\n");
return;
}
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(this, gfxPoint(0, 0));
ctx->Paint();
}
size = imgsurf->GetSize();
nsCOMPtr<imgIEncoder> encoder =
do_CreateInstance("@mozilla.org/image/encoder;2?type=image/png");
if (!encoder) {
int32_t w = std::min(size.width, 8);
int32_t h = std::min(size.height, 8);
printf("Could not create encoder. Printing %dx%d pixels.\n", w, h);
for (int32_t y = 0; y < h; ++y) {
for (int32_t x = 0; x < w; ++x) {
printf("%x ", reinterpret_cast<uint32_t*>(imgsurf->Data())[y*imgsurf->Stride()+ x]);
}
}
return;
}
nsresult rv = encoder->InitFromData(imgsurf->Data(),
size.width * size.height * 4,
size.width,
size.height,
imgsurf->Stride(),
imgIEncoder::INPUT_FORMAT_HOSTARGB,
NS_LITERAL_STRING(""));
if (NS_FAILED(rv))
return;
nsCOMPtr<nsIInputStream> imgStream;
CallQueryInterface(encoder.get(), getter_AddRefs(imgStream));
if (!imgStream)
return;
uint64_t bufSize64;
rv = imgStream->Available(&bufSize64);
if (NS_FAILED(rv))
return;
if (bufSize64 > UINT32_MAX - 16)
return;
uint32_t bufSize = (uint32_t)bufSize64;
// ...leave a little extra room so we can call read again and make sure we
// got everything. 16 bytes for better padding (maybe)
bufSize += 16;
uint32_t imgSize = 0;
char* imgData = (char*)moz_malloc(bufSize);
if (!imgData)
return;
uint32_t numReadThisTime = 0;
while ((rv = imgStream->Read(&imgData[imgSize],
bufSize - imgSize,
&numReadThisTime)) == NS_OK && numReadThisTime > 0)
{
imgSize += numReadThisTime;
if (imgSize == bufSize) {
// need a bigger buffer, just double
bufSize *= 2;
char* newImgData = (char*)moz_realloc(imgData, bufSize);
if (!newImgData) {
moz_free(imgData);
return;
}
imgData = newImgData;
}
}
if (aBinary) {
if (aFile) {
fwrite(imgData, 1, imgSize, aFile);
} else {
NS_WARNING("Can't write binary image data without a file!");
}
return;
}
// base 64, result will be NULL terminated
nsCString encodedImg;
rv = Base64Encode(Substring(imgData, imgSize), encodedImg);
moz_free(imgData);
if (NS_FAILED(rv)) // not sure why this would fail
return;
nsCString string("data:image/png;base64,");
string.Append(encodedImg);
if (aFile) {
#ifdef ANDROID
if (aFile == stdout || aFile == stderr) {
// ADB logcat cuts off long strings so we will break it down
const char* cStr = string.BeginReading();
size_t len = strlen(cStr);
while (true) {
printf_stderr("IMG: %.140s\n", cStr);
if (len <= 140)
break;
len -= 140;
cStr += 140;
}
}
#endif
fprintf(aFile, "%s", string.BeginReading());
} else {
nsCOMPtr<nsIClipboardHelper> clipboard(do_GetService("@mozilla.org/widget/clipboardhelper;1", &rv));
if (clipboard) {
clipboard->CopyString(NS_ConvertASCIItoUTF16(string), nullptr);
}
}
return;
}
void
gfxASurface::SetOpaqueRect(const gfxRect& aRect)
{
if (aRect.IsEmpty()) {
mOpaqueRect = nullptr;
} else if (!!mOpaqueRect) {
*mOpaqueRect = aRect;
} else {
mOpaqueRect = new gfxRect(aRect);
}
}
/* static */const gfxRect&
gfxASurface::GetEmptyOpaqueRect()
{
static const gfxRect empty(0, 0, 0, 0);
return empty;
}
const nsIntSize
gfxASurface::GetSize() const
{
return nsIntSize(-1, -1);
}
already_AddRefed<gfxImageSurface>
gfxASurface::GetAsImageSurface()
{
return nullptr;
}