gecko/gfx/thebes/gfxASurface.cpp

897 lines
23 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 "gfxASurface.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "nsRect.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 "nsIConsoleService.h"
#include "nsServiceManagerUtils.h"
#include "nsStringGlue.h"
#include "nsIClipboardHelper.h"
using namespace mozilla;
static cairo_user_data_key_t gfxasurface_pointer_key;
// 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;
}
}
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 NULL;
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)
{
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);
NS_ADDREF(result);
return result;
}
/* 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);
NS_ADDREF(result);
return result;
}
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
}
}
gfxASurface::gfxSurfaceType
gfxASurface::GetType() const
{
if (!mSurfaceValid)
return (gfxSurfaceType)-1;
return (gfxSurfaceType)cairo_surface_get_type(mSurface);
}
gfxASurface::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);
}
void
gfxASurface::MarkDirty()
{
if (!mSurfaceValid)
return;
cairo_surface_mark_dirty(mSurface);
}
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());
}
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 NULL;
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 gfxIntSize& 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() != gfxASurface::ImageFormatARGB32) {
imgSurface = CopyToARGB32ImageSurface();
}
return imgSurface.forget();
}
already_AddRefed<gfxImageSurface>
gfxASurface::CopyToARGB32ImageSurface()
{
if (!mSurface || !mSurfaceValid) {
return nullptr;
}
const gfxIntSize size = GetSize();
nsRefPtr<gfxImageSurface> imgSurface =
new gfxImageSurface(size, gfxASurface::ImageFormatARGB32);
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 gfxIntSize& 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;
}
gfxASurface::gfxContentType
gfxASurface::ContentFromFormat(gfxImageFormat format)
{
switch (format) {
case ImageFormatARGB32:
return CONTENT_COLOR_ALPHA;
case ImageFormatRGB24:
case ImageFormatRGB16_565:
return CONTENT_COLOR;
case ImageFormatA8:
case ImageFormatA1:
return CONTENT_ALPHA;
case ImageFormatUnknown:
default:
return 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
}
gfxASurface::MemoryLocation
gfxASurface::GetMemoryLocation() const
{
return MEMORY_IN_PROCESS_HEAP;
}
int32_t
gfxASurface::BytePerPixelFromFormat(gfxImageFormat format)
{
switch (format) {
case ImageFormatARGB32:
case ImageFormatRGB24:
return 4;
case ImageFormatRGB16_565:
return 2;
case ImageFormatA8:
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(),
gfxIntSize(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_ASSERTION(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) ==
gfxASurface::SurfaceTypeMax);
#ifdef CAIRO_HAS_D2D_SURFACE
PR_STATIC_ASSERT(uint32_t(CAIRO_SURFACE_TYPE_D2D) ==
uint32_t(gfxASurface::SurfaceTypeD2D));
#endif
PR_STATIC_ASSERT(uint32_t(CAIRO_SURFACE_TYPE_SKIA) ==
uint32_t(gfxASurface::SurfaceTypeSkia));
/* Surface size memory reporting */
static int64_t gSurfaceMemoryUsed[gfxASurface::SurfaceTypeMax] = { 0 };
class SurfaceMemoryReporter MOZ_FINAL :
public nsIMemoryMultiReporter
{
public:
SurfaceMemoryReporter()
{ }
NS_DECL_ISUPPORTS
NS_IMETHOD GetName(nsACString &name)
{
name.AssignLiteral("gfx-surface");
return NS_OK;
}
NS_IMETHOD CollectReports(nsIMemoryMultiReporterCallback *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;
}
NS_IMETHOD GetExplicitNonHeap(int64_t *n)
{
*n = 0; // this reporter makes neither "explicit" non NONHEAP reports
return NS_OK;
}
};
NS_IMPL_ISUPPORTS1(SurfaceMemoryReporter, nsIMemoryMultiReporter)
void
gfxASurface::RecordMemoryUsedForSurfaceType(gfxASurface::gfxSurfaceType aType,
int32_t aBytes)
{
if (aType < 0 || aType >= SurfaceTypeMax) {
NS_WARNING("Invalid type to RecordMemoryUsedForSurfaceType!");
return;
}
static bool registered = false;
if (!registered) {
NS_RegisterMemoryMultiReporter(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(nsMallocSizeOfFun aMallocSizeOf) const
{
// We don't measure mSurface because cairo doesn't allow it.
return 0;
}
size_t
gfxASurface::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
{
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
/* static */ uint8_t
gfxASurface::BytesPerPixel(gfxImageFormat aImageFormat)
{
switch (aImageFormat) {
case ImageFormatARGB32:
return 4;
case ImageFormatRGB24:
return 4;
case ImageFormatRGB16_565:
return 2;
case ImageFormatA8:
return 1;
case ImageFormatA1:
return 1; // Close enough
case ImageFormatUnknown:
default:
NS_NOTREACHED("Not really sure what you want me to say here");
return 0;
}
}
#ifdef MOZ_DUMP_IMAGES
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();
gfxIntSize size;
// FIXME/bug 831898: hack r5g6b5 for now.
if (!imgsurf || imgsurf->Format() == ImageFormatRGB16_565) {
size = GetSize();
if (size.width == -1 && size.height == -1) {
printf("Could not determine surface size\n");
return;
}
imgsurf =
new gfxImageSurface(gfxIntSize(size.width, size.height),
gfxASurface::ImageFormatARGB32);
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;
}
#endif