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d84b575cd0a4cb411489007687086149c5c670cd
gtk3/gdk-pixbuf/io-gdip-utils.c
Dominic Lachowicz b559c7dacc Fix 2 cases where we leaked a GpImage (#552545) 
2008-09-18  Dominic Lachowicz  <domlachowicz@gmail.com>

        * io-gdip-utils.c: Fix 2 cases where we leaked a GpImage (#552545)


svn path=/trunk/; revision=21426
2008-09-18 14:30:43 +00:00

1014 lines
28 KiB
C
Raw Blame History

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* GdkPixbuf library - Win32 GDI+ Pixbuf Loader
*
* Copyright (C) 2008 Dominic Lachowicz
* Copyright (C) 2008 Alberto Ruiz
*
* Authors: Dominic Lachowicz <domlachowicz@gmail.com>
* Alberto Ruiz <aruiz@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more * You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#define INITGUID
#include <ole2.h>
#include "io-gdip-utils.h"
#include "io-gdip-native.h"
#include "io-gdip-propertytags.h"
#include "io-gdip-animation.h"
#define LOAD_BUFFER_SIZE 65536
static GdiplusStartupFunc GdiplusStartup;
static GdipCreateBitmapFromStreamFunc GdipCreateBitmapFromStream;
static GdipBitmapGetPixelFunc GdipBitmapGetPixel;
static GdipGetImageHeightFunc GdipGetImageHeight;
static GdipDisposeImageFunc GdipDisposeImage;
static GdipGetImageFlagsFunc GdipGetImageFlags;
static GdipGetImageWidthFunc GdipGetImageWidth;
static GdipImageGetFrameCountFunc GdipImageGetFrameCount;
static GdipImageSelectActiveFrameFunc GdipImageSelectActiveFrame;
static GdipGetPropertyItemSizeFunc GdipGetPropertyItemSize;
static GdipGetPropertyItemFunc GdipGetPropertyItem;
static GdipGetPropertyCountFunc GdipGetPropertyCount;
static GdipGetPropertyIdListFunc GdipGetPropertyIdList;
static GdipCreateBitmapFromScan0Func GdipCreateBitmapFromScan0;
static GdipSaveImageToStreamFunc GdipSaveImageToStream;
static GdipBitmapSetPixelFunc GdipBitmapSetPixel;
static GdipDrawImageIFunc GdipDrawImageI;
static GdipGetImageGraphicsContextFunc GdipGetImageGraphicsContext;
static GdipFlushFunc GdipFlush;
static GdipGraphicsClearFunc GdipGraphicsClear;
static GdipBitmapSetResolutionFunc GdipBitmapSetResolution;
static GdipGetImageHorizontalResolutionFunc GdipGetImageHorizontalResolution;
static GdipGetImageVerticalResolutionFunc GdipGetImageVerticalResolution;
static GdipLoadImageFromStreamFunc GdipLoadImageFromStream;
static GdipDeleteGraphicsFunc GdipDeleteGraphics;
static GdipGetImageEncodersFunc GdipGetImageEncoders;
static GdipGetImageEncodersSizeFunc GdipGetImageEncodersSize;
static GdipBitmapLockBitsFunc GdipBitmapLockBits;
static GdipBitmapUnlockBitsFunc GdipBitmapUnlockBits;
static GdipGetImagePixelFormatFunc GdipGetImagePixelFormat;
static GdipCloneBitmapAreaIFunc GdipCloneBitmapAreaI;
DEFINE_GUID(FrameDimensionTime, 0x6aedbd6d,0x3fb5,0x418a,0x83,0xa6,0x7f,0x45,0x22,0x9d,0xc8,0x72);
DEFINE_GUID(FrameDimensionPage, 0x7462dc86,0x6180,0x4c7e,0x8e,0x3f,0xee,0x73,0x33,0xa7,0xa4,0x83);
static void
gdip_set_error_from_hresult (GError **error, gint code, HRESULT hr, const char *format)
{
gchar *msg;
msg = g_win32_error_message (hr);
if (msg) {
g_set_error (error, GDK_PIXBUF_ERROR, code, format, msg);
g_free (msg);
}
}
static void
gdip_set_error_from_gpstatus (GError **error, gint code, GpStatus status)
{
const char *msg;
switch (status)
{
#define CASE(x) case x: msg = #x; break
CASE (GenericError);
CASE (InvalidParameter);
CASE (OutOfMemory);
CASE (ObjectBusy);
CASE (InsufficientBuffer);
CASE (NotImplemented);
CASE (Win32Error);
CASE (WrongState);
CASE (Aborted);
CASE (FileNotFound);
CASE (ValueOverflow);
CASE (AccessDenied);
CASE (UnknownImageFormat);
CASE (FontFamilyNotFound);
CASE (FontStyleNotFound);
CASE (NotTrueTypeFont);
CASE (UnsupportedGdiplusVersion);
CASE (GdiplusNotInitialized);
CASE (PropertyNotFound);
CASE (PropertyNotSupported);
CASE (ProfileNotFound);
default:
msg = "Unknown error";
}
g_set_error_literal (error, GDK_PIXBUF_ERROR, code, msg);
}
static gboolean
gdip_init (void)
{
GdiplusStartupInput input;
ULONG_PTR gdiplusToken = 0;
static HINSTANCE gdipluslib = NULL;
if (!gdipluslib)
gdipluslib = LoadLibrary ("gdiplus.dll");
else
return TRUE; /* gdip_init() is idempotent */
if (!gdipluslib)
return FALSE;
#define LOOKUP(func) \
G_STMT_START { \
func = (func##Func) GetProcAddress (gdipluslib, #func); \
if (!func) {\
g_warning ("Couldn't find GDI+ function %s\n", #func); \
return FALSE; \
} \
} G_STMT_END
LOOKUP (GdiplusStartup);
LOOKUP (GdipCreateBitmapFromStream);
LOOKUP (GdipBitmapGetPixel);
LOOKUP (GdipGetImageHeight);
LOOKUP (GdipDisposeImage);
LOOKUP (GdipGetImageFlags);
LOOKUP (GdipGetImageWidth);
LOOKUP (GdipImageGetFrameCount);
LOOKUP (GdipImageSelectActiveFrame);
LOOKUP (GdipGetPropertyItemSize);
LOOKUP (GdipGetPropertyItem);
LOOKUP (GdipGetPropertyCount);
LOOKUP (GdipGetPropertyIdList);
LOOKUP (GdipCreateBitmapFromScan0);
LOOKUP (GdipSaveImageToStream);
LOOKUP (GdipBitmapSetPixel);
LOOKUP (GdipDrawImageI);
LOOKUP (GdipGetImageGraphicsContext);
LOOKUP (GdipFlush);
LOOKUP (GdipGraphicsClear);
LOOKUP (GdipBitmapSetResolution);
LOOKUP (GdipGetImageHorizontalResolution);
LOOKUP (GdipGetImageVerticalResolution);
LOOKUP (GdipLoadImageFromStream);
LOOKUP (GdipDeleteGraphics);
LOOKUP (GdipGetImageEncoders);
LOOKUP (GdipGetImageEncodersSize);
LOOKUP (GdipBitmapLockBits);
LOOKUP (GdipBitmapUnlockBits);
LOOKUP (GdipGetImagePixelFormat);
LOOKUP (GdipCloneBitmapAreaI);
#undef LOOKUP
input.GdiplusVersion = 1;
input.DebugEventCallback = NULL;
input.SuppressBackgroundThread = input.SuppressExternalCodecs = FALSE;
return (GdiplusStartup (&gdiplusToken, &input, NULL) == 0 ? TRUE : FALSE);
}
static gboolean
GetEncoderClsid (const WCHAR *format, CLSID *pClsid)
{
UINT num, size;
int j;
ImageCodecInfo *pImageCodecInfo;
if (Ok != GdipGetImageEncodersSize (&num, &size))
return FALSE;
pImageCodecInfo = (ImageCodecInfo *) g_malloc (size);
if (Ok != GdipGetImageEncoders (num, size, pImageCodecInfo)) {
g_free (pImageCodecInfo);
return FALSE;
}
for (j = 0; j < num; j++) {
if (wcscmp (pImageCodecInfo[j].MimeType, format) == 0) {
*pClsid = pImageCodecInfo[j].Clsid;
g_free (pImageCodecInfo);
return TRUE;
}
}
g_free (pImageCodecInfo);
return FALSE;
}
static HGLOBAL
gdip_buffer_to_hglobal (const gchar *buffer, size_t size, GError **error)
{
HGLOBAL hg = NULL;
hg = GlobalAlloc (GPTR, size);
if (!hg) {
gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, GetLastError (), _("Could not allocate memory: %s"));
return NULL;
}
CopyMemory (hg, buffer, size);
return hg;
}
static gboolean
gdip_save_bitmap_to_callback (GpBitmap *bitmap,
const CLSID *format,
const EncoderParameters *encoder_params,
GdkPixbufSaveFunc save_func,
gpointer user_data,
GError **error)
{
HRESULT hr;
IStream *streamOut = NULL;
gboolean success = FALSE;
guint64 zero = 0;
GpStatus status;
hr = CreateStreamOnHGlobal (NULL, TRUE, &streamOut);
if (!SUCCEEDED (hr)) {
gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not create stream: %s"));
return FALSE;
}
status = GdipSaveImageToStream ((GpImage *)bitmap, streamOut, format, encoder_params);
if (Ok != status) {
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
IStream_Release (streamOut);
return FALSE;
}
/* seek back to the beginning of the stream */
hr = IStream_Seek (streamOut, *(LARGE_INTEGER *)&zero, STREAM_SEEK_SET, NULL);
if (!SUCCEEDED (hr)) {
gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not seek stream: %s"));
IStream_Release (streamOut);
return FALSE;
}
for (;;) {
char buffer[LOAD_BUFFER_SIZE];
ULONG nread;
hr = IStream_Read (streamOut, buffer, sizeof(buffer), &nread);
if (!SUCCEEDED (hr))
{
gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not read from stream: %s"));
break;
}
else if (0 == nread) {
success = TRUE; /* EOF */
break;
}
else if (!(*save_func) (buffer, nread, error, user_data))
break;
}
IStream_Release (streamOut);
return success;
}
static GpBitmap *
gdip_pixbuf_to_bitmap (GdkPixbuf *pixbuf)
{
GpBitmap *bitmap = NULL;
int width, height, stride, n_channels;
guint8 *pixels;
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
stride = gdk_pixbuf_get_rowstride (pixbuf);
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
pixels = gdk_pixbuf_get_pixels (pixbuf);
if (n_channels == 3 || n_channels == 4) {
/* rgbX. need to convert to argb. pass a null data to get an empty bitmap */
GdipCreateBitmapFromScan0 (width, height, 0, PixelFormat32bppARGB, NULL, &bitmap);
if (bitmap) {
int x, y;
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
ARGB p;
guint8 alpha;
guchar *base = pixels + (y * stride + (x * n_channels));
if (n_channels == 4)
alpha = base[3];
else
alpha = 0xff;
if (alpha == 0)
p = 0;
else {
guint8 red = base[0];
guint8 green = base[1];
guint8 blue = base[2];
p = (alpha << 24) | (red << 16) | (green << 8) | (blue << 0);
}
GdipBitmapSetPixel (bitmap, x, y, p);
}
}
}
}
else {
g_warning ("Unsupported number of channels: %d\n", n_channels);
}
return bitmap;
}
static GpBitmap *
gdip_buffer_to_bitmap (const gchar *buffer, size_t size, GError **error)
{
HRESULT hr;
HGLOBAL hg = NULL;
GpBitmap *bitmap = NULL;
IStream *stream = NULL;
GpStatus status;
guint64 size64 = size;
hg = gdip_buffer_to_hglobal (buffer, size, error);
if (!hg)
return NULL;
IStream_SetSize (stream, *(ULARGE_INTEGER *)&size64);
hr = CreateStreamOnHGlobal (hg, FALSE, (LPSTREAM *)&stream);
if (!SUCCEEDED (hr)) {
gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not create stream: %s"));
GlobalFree (hg);
return NULL;
}
status = GdipCreateBitmapFromStream (stream, &bitmap);
if (Ok != status)
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
IStream_Release (stream);
GlobalFree (hg);
return bitmap;
}
static GpImage *
gdip_buffer_to_image (const gchar *buffer, size_t size, GError **error)
{
HRESULT hr;
HGLOBAL hg = NULL;
GpImage *image = NULL;
IStream *stream = NULL;
GpStatus status;
guint64 size64 = size;
hg = gdip_buffer_to_hglobal (buffer, size, error);
if (!hg)
return NULL;
hr = CreateStreamOnHGlobal (hg, FALSE, (LPSTREAM *)&stream);
if (!SUCCEEDED (hr)) {
gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not create stream: %s"));
GlobalFree (hg);
return NULL;
}
IStream_SetSize (stream, *(ULARGE_INTEGER *)&size64);
status = GdipLoadImageFromStream (stream, &image);
if (Ok != status)
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
IStream_Release (stream);
GlobalFree (hg);
return image;
}
static void
gdip_bitmap_get_size (GpBitmap *bitmap, guint *width, guint *height)
{
if (bitmap == NULL || width == NULL || height == NULL)
return;
*width = *height = 0;
GdipGetImageWidth ((GpImage *) bitmap, width);
GdipGetImageHeight ((GpImage *) bitmap, height);
}
static void
gdip_bitmap_get_has_alpha (GpBitmap *bitmap, gboolean *has_alpha)
{
guint flags = 0;
if (bitmap == NULL || has_alpha == NULL)
return;
GdipGetImageFlags ((GpImage *) bitmap, &flags);
*has_alpha = (flags & ImageFlagsHasAlpha);
}
static gboolean
gdip_bitmap_get_n_frames (GpBitmap *bitmap, guint *n_frames, gboolean timeDimension)
{
if (bitmap == NULL || n_frames == NULL)
return FALSE;
*n_frames = 1;
return (Ok == GdipImageGetFrameCount ((GpImage *) bitmap, (timeDimension ? &FrameDimensionTime : &FrameDimensionPage), n_frames));
}
static gboolean
gdip_bitmap_select_frame (GpBitmap *bitmap, guint frame, gboolean timeDimension)
{
if (bitmap == NULL)
return FALSE;
return (Ok == GdipImageSelectActiveFrame ((GpImage *)bitmap, (timeDimension ? &FrameDimensionTime : &FrameDimensionPage), frame));
}
static gboolean
gdip_bitmap_get_property_as_string (GpBitmap *bitmap, guint propertyId, gchar **str)
{
guint item_size;
gboolean success = FALSE;
if (bitmap == NULL || str == NULL)
return FALSE;
*str = 0;
if (Ok == GdipGetPropertyItemSize ((GpImage *)bitmap, propertyId, &item_size)) {
PropertyItem *item;
item = (PropertyItem *)g_try_malloc (item_size);
if (Ok == GdipGetPropertyItem ((GpImage *)bitmap, propertyId, item_size, item)) {
GString *gstr;
int i;
gstr = g_string_new (NULL);
success = TRUE;
switch (item->type) {
case PropertyTagTypeByte:
for (i = 0; i < item->length / sizeof(guint8); i++) {
guint8 *bytes = (guint8 *)item->value;
if (gstr->len != 0)
g_string_append_c(gstr, ',');
g_string_append_printf (gstr, "%u", (guint32)bytes[i]);
}
break;
case PropertyTagTypeASCII:
g_string_append_len (gstr, (const char *)item->value, item->length);
break;
case PropertyTagTypeShort:
for (i = 0; i < item->length / sizeof(guint16); i++) {
guint16 *shorts = (guint16 *)item->value;
if (gstr->len != 0)
g_string_append_c (gstr, ',');
g_string_append_printf (gstr, "%u", (guint32)shorts[i]);
}
break;
case PropertyTagTypeLong:
for (i = 0; i < item->length / sizeof(guint32); i++) {
guint32 *longs = (guint32 *)item->value;
if (gstr->len != 0)
g_string_append_c (gstr, ',');
g_string_append_printf (gstr, "%u", longs[i]);
}
break;
case PropertyTagTypeSLONG:
for (i = 0; i < item->length / sizeof(guint32); i++) {
gint32 *longs = (gint32 *)item->value;
if (gstr->len != 0)
g_string_append_c (gstr, ',');
g_string_append_printf (gstr, "%d", longs[i]);
}
break;
default:
success = FALSE;
break;
}
if (gstr->len > 0)
*str = g_string_free (gstr, FALSE);
else
g_string_free (gstr, TRUE);
}
g_free (item);
}
return success;
}
static gboolean
gdip_bitmap_get_frame_delay (GpBitmap *bitmap, guint *delay)
{
guint item_size;
gboolean success = FALSE;
if (bitmap == NULL || delay == NULL)
return FALSE;
*delay = 0;
if (Ok == GdipGetPropertyItemSize ((GpImage *)bitmap, PropertyTagFrameDelay, &item_size)) {
PropertyItem *item;
item = (PropertyItem *)g_try_malloc (item_size);
if (Ok == GdipGetPropertyItem ((GpImage *)bitmap, PropertyTagFrameDelay, item_size, item)) {
/* PropertyTagFrameDelay. Time delay, in hundredths of a second, between two frames in an animated GIF image. */
*delay = *((long *)item->value);
success = TRUE;
}
g_free (item);
}
return success;
}
static gboolean
gdip_bitmap_get_n_loops (GpBitmap *bitmap, guint *loops)
{
guint item_size;
gboolean success = FALSE;
if (bitmap == NULL || loops == NULL)
return FALSE;
*loops = 1;
/* PropertyTagLoopCount. 0 == infinitely */
if (Ok == GdipGetPropertyItemSize ((GpImage *)bitmap, PropertyTagLoopCount, &item_size)) {
PropertyItem *item;
item = (PropertyItem *)g_try_malloc (item_size);
if (Ok == GdipGetPropertyItem ((GpImage *)bitmap, PropertyTagLoopCount, item_size, item)) {
*loops = *((short *)item->value);
success = TRUE;
}
g_free (item);
}
return success;
}
/*************************************************************************/
/*************************************************************************/
struct _GdipContext {
GdkPixbufModuleUpdatedFunc updated_func;
GdkPixbufModulePreparedFunc prepared_func;
GdkPixbufModuleSizeFunc size_func;
gpointer user_data;
GByteArray *buffer;
};
typedef struct _GdipContext GdipContext;
static void
destroy_gdipcontext (GdipContext *context)
{
if (context != NULL) {
g_byte_array_free (context->buffer, TRUE);
g_free (context);
}
}
static void
emit_updated (GdipContext *context, GdkPixbuf *pixbuf)
{
if (context->updated_func)
(*context->updated_func) (pixbuf,
0, 0,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
context->user_data);
}
static void
emit_prepared (GdipContext *context, GdkPixbuf *pixbuf, GdkPixbufAnimation *anim)
{
if (context->prepared_func)
(*context->prepared_func) (pixbuf, anim, context->user_data);
}
static gpointer
gdk_pixbuf__gdip_image_begin_load (GdkPixbufModuleSizeFunc size_func,
GdkPixbufModulePreparedFunc prepared_func,
GdkPixbufModuleUpdatedFunc updated_func,
gpointer user_data,
GError **error)
{
GdipContext *context = g_new0 (GdipContext, 1);
context->size_func = size_func;
context->prepared_func = prepared_func;
context->updated_func = updated_func;
context->user_data = user_data;
context->buffer = g_byte_array_new ();
return context;
}
static gboolean
gdk_pixbuf__gdip_image_load_increment (gpointer data,
const guchar *buf, guint size,
GError **error)
{
GdipContext *context = (GdipContext *)data;
GByteArray *image_buffer = context->buffer;
g_byte_array_append (image_buffer, (guint8 *)buf, size);
return TRUE;
}
static GdkPixbuf *
gdip_bitmap_to_pixbuf (GpBitmap *bitmap, GError **error)
{
GdkPixbuf *pixbuf = NULL;
guchar *cursor = NULL;
gint rowstride;
gboolean has_alpha = FALSE;
gint n_channels = 0;
gchar *option;
guint width = 0, height = 0, x, y;
gdip_bitmap_get_size (bitmap, &width, &height);
gdip_bitmap_get_has_alpha (bitmap, &has_alpha);
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, has_alpha, 8, width, height);
if (!pixbuf) {
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY, _("Couldn't load bitmap"));
return NULL;
}
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
cursor = gdk_pixbuf_get_pixels (pixbuf);
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
ARGB pixel;
GpStatus status;
guchar *b = cursor + (y * rowstride + (x * n_channels));
if (Ok != (status = GdipBitmapGetPixel (bitmap, x, y, &pixel))) {
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
g_object_unref (pixbuf);
return NULL;
}
b[0] = (pixel & 0xff0000) >> 16;
b[1] = (pixel & 0x00ff00) >> 8;
b[2] = (pixel & 0x0000ff) >> 0;
if (has_alpha)
b[3] = (pixel & 0xff000000) >> 24;
}
}
if (gdip_bitmap_get_property_as_string (bitmap, PropertyTagOrientation, &option)) {
gdk_pixbuf_set_option (pixbuf, "orientation", option);
g_free (option);
}
if (gdip_bitmap_get_property_as_string (bitmap, PropertyTagArtist, &option)) {
gdk_pixbuf_set_option (pixbuf, "Author", option);
g_free (option);
}
if (gdip_bitmap_get_property_as_string (bitmap, PropertyTagImageTitle, &option)) {
gdk_pixbuf_set_option (pixbuf, "Title", option);
g_free (option);
}
return pixbuf;
}
static gboolean
stop_load (GpBitmap *bitmap, GdipContext *context, GError **error)
{
guint n_frames = 1, i;
GdkPixbufGdipAnim *animation = NULL;
gdip_bitmap_get_n_frames (bitmap, &n_frames, TRUE);
for (i = 0; i < n_frames; i++) {
GdkPixbuf *pixbuf = NULL;
GdkPixbufFrame *frame;
guint frame_delay = 0;
gdip_bitmap_select_frame (bitmap, i, TRUE);
pixbuf = gdip_bitmap_to_pixbuf (bitmap, error);
if (!pixbuf) {
if (animation != NULL)
g_object_unref (G_OBJECT (animation));
GdipDisposeImage ((GpImage *)bitmap);
destroy_gdipcontext (context);
return FALSE;
}
if (animation == NULL) {
guint n_loops = 1;
animation = g_object_new (GDK_TYPE_PIXBUF_GDIP_ANIM, NULL);
gdip_bitmap_get_n_loops (bitmap, &n_loops);
animation->loop = n_loops;
}
frame = g_new (GdkPixbufFrame, 1);
frame->pixbuf = pixbuf;
gdip_bitmap_get_frame_delay (bitmap, &frame_delay);
animation->n_frames++;
animation->frames = g_list_append (animation->frames, frame);
animation->width = gdk_pixbuf_get_width (pixbuf);
animation->height = gdk_pixbuf_get_height (pixbuf);
/* GIF delay is in hundredths, we want thousandths */
frame->delay_time = frame_delay * 10;
frame->elapsed = animation->total_time;
/* Some GIFs apparently have delay time of 0,
* that crashes everything so set it to "fast".
* Also, timeouts less than 20 or so just lock up
* the app or make the animation choppy, so fix them.
*/
if (frame->delay_time < 20)
frame->delay_time = 20; /* 20 = "fast" */
animation->total_time += frame->delay_time;
if (i == 0)
emit_prepared (context, pixbuf, GDK_PIXBUF_ANIMATION (animation));
emit_updated (context, pixbuf);
}
if (animation != NULL)
g_object_unref (G_OBJECT (animation));
GdipDisposeImage ((GpImage *)bitmap);
destroy_gdipcontext (context);
return TRUE;
}
static gboolean
gdk_pixbuf__gdip_image_stop_load (gpointer data, GError **error)
{
GdipContext *context = (GdipContext *)data;
GpBitmap *bitmap = NULL;
GByteArray *image_buffer = context->buffer;
bitmap = gdip_buffer_to_bitmap ((gchar *)image_buffer->data, image_buffer->len, error);
if (!bitmap) {
destroy_gdipcontext (context);
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE, _("Couldn't load bitmap"));
return FALSE;
}
return stop_load (bitmap, context, error);
}
static gboolean
gdk_pixbuf__gdip_image_stop_vector_load (gpointer data, GError **error)
{
GdipContext *context = (GdipContext *)data;
GByteArray *image_buffer = context->buffer;
GpImage *metafile;
GpGraphics *graphics;
GpBitmap *bitmap;
GpStatus status;
float metafile_xres, metafile_yres;
guint width, height;
metafile = gdip_buffer_to_image ((gchar *)image_buffer->data, image_buffer->len, error);
if (!metafile) {
destroy_gdipcontext (context);
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE, _("Couldn't load metafile"));
return FALSE;
}
GdipGetImageWidth (metafile, &width);
GdipGetImageHeight (metafile, &height);
status = GdipCreateBitmapFromScan0 (width, height, 0, PixelFormat32bppARGB, NULL, &bitmap);
if (Ok != status) {
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
GdipDisposeImage (metafile);
return FALSE;
}
GdipGetImageHorizontalResolution (metafile, &metafile_xres);
GdipGetImageVerticalResolution (metafile, &metafile_yres);
GdipBitmapSetResolution (bitmap, metafile_xres, metafile_yres);
status = GdipGetImageGraphicsContext ((GpImage *)bitmap, &graphics);
if (Ok != status) {
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
GdipDisposeImage ((GpImage *)bitmap);
GdipDisposeImage (metafile);
return FALSE;
}
/* gotta clear the bitmap */
GdipGraphicsClear (graphics, 0xffffffff);
status = GdipDrawImageI (graphics, metafile, 0, 0);
if (Ok != status) {
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
GdipDeleteGraphics (graphics);
GdipDisposeImage ((GpImage *)bitmap);
GdipDisposeImage (metafile);
return FALSE;
}
GdipFlush (graphics, 1);
GdipDeleteGraphics (graphics);
GdipDisposeImage (metafile);
return stop_load (bitmap, context, error);
}
static void
gdip_animation_prepare (GdkPixbuf *pixbuf,
GdkPixbufAnimation *animation,
gpointer user_data)
{
GdkPixbufAnimation **anim;
anim = (GdkPixbufAnimation **)user_data;
/* save a reference to the animation */
g_object_ref (animation);
*anim = animation;
}
static GdkPixbufAnimation *
gdk_pixbuf__gdip_image_load_animation (FILE *file,
GError **error)
{
GdkPixbufAnimation *animation = NULL;
gpointer context;
char buffer[LOAD_BUFFER_SIZE];
size_t length;
context = gdk_pixbuf__gdip_image_begin_load (NULL, gdip_animation_prepare, NULL, &animation, error);
while (!feof (file) && !ferror (file)) {
length = fread (buffer, 1, sizeof (buffer), file);
if (length > 0) {
if (!gdk_pixbuf__gdip_image_load_increment (context, buffer, length, error)) {
gdk_pixbuf__gdip_image_stop_load (context, NULL);
if (animation)
g_object_unref (animation);
return NULL;
}
}
}
if (!gdk_pixbuf__gdip_image_stop_load(context, error)) {
if (animation)
g_object_unref (animation);
return NULL;
}
return animation;
}
gboolean
gdip_save_to_file_callback (const gchar *buf,
gsize count,
GError **error,
gpointer data)
{
FILE *filehandle = data;
gsize n;
n = fwrite (buf, 1, count, filehandle);
if (n != count) {
gint save_errno = errno;
g_set_error (error,
G_FILE_ERROR,
g_file_error_from_errno (save_errno),
_("Error writing to image file: %s"),
g_strerror (save_errno));
return FALSE;
}
return TRUE;
}
void
gdip_fill_vtable (GdkPixbufModule *module)
{
if (gdip_init ()) {
module->begin_load = gdk_pixbuf__gdip_image_begin_load;
module->stop_load = gdk_pixbuf__gdip_image_stop_load;
module->load_increment = gdk_pixbuf__gdip_image_load_increment;
/* this is the only way to get gtk_image_new_from_file() to load animations. it regrettably
does not use the GdkPixbufLoader interface. */
module->load_animation = gdk_pixbuf__gdip_image_load_animation;
}
}
void
gdip_fill_vector_vtable (GdkPixbufModule *module)
{
if (gdip_init ()) {
module->begin_load = gdk_pixbuf__gdip_image_begin_load;
module->stop_load = gdk_pixbuf__gdip_image_stop_vector_load;
module->load_increment = gdk_pixbuf__gdip_image_load_increment;
}
}
gboolean
gdip_save_pixbuf (GdkPixbuf *pixbuf,
const WCHAR *format,
const EncoderParameters *encoder_params,
GdkPixbufSaveFunc save_func,
gpointer user_data,
GError **error)
{
GpBitmap *image;
CLSID clsid;
gboolean success;
if (!GetEncoderClsid (format, &clsid)) {
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_FAILED, _("Unsupported image format for GDI+"));
return FALSE;
}
image = gdip_pixbuf_to_bitmap (pixbuf);
if (image == NULL) {
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_FAILED, _("Couldn't save"));
return FALSE;
}
success = gdip_save_bitmap_to_callback (image, &clsid, encoder_params, save_func, user_data, error);
GdipDisposeImage ((GpImage *)image);
return success;
}
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