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image.c
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image.c
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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 4; -*-
*
* image.c
*
* Copyright (c) 2003 Alexandre Pigolkine
* Copyright (C) 2007 Novell, Inc (http://www.novell.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
* NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Alexandre Pigolkine(pigolkine@gmx.de)
* Sanjay Gupta (gsanjay@novell.com)
* Vladimir Vukicevic (vladimir@pobox.com)
* Jordi Mas (jordi@ximian.com)
* Jonathan Gilbert (logic@deltaq.org)
* Sebastien Pouliot <sebastien@ximian.com>
*/
#include "gdiplus-private.h"
#include "image-private.h"
#include "imageattributes-private.h"
#include "graphics-private.h"
#include "matrix.h"
#include "metafile-private.h"
#include "bmpcodec.h"
#include "pngcodec.h"
#include "jpegcodec.h"
#include "gifcodec.h"
#include "tiffcodec.h"
#include "icocodec.h"
#include "emfcodec.h"
#include "wmfcodec.h"
/*
* format guids
*/
extern GUID gdip_bmp_image_format_guid;
extern GUID gdip_jpg_image_format_guid;
extern GUID gdip_png_image_format_guid;
extern GUID gdip_gif_image_format_guid;
extern GUID gdip_tif_image_format_guid;
extern GUID gdip_wmf_image_format_guid;
extern GUID gdip_emf_image_format_guid;
extern GUID gdip_ico_image_format_guid;
GUID gdip_exif_image_format_guid = {0xb96b3cb2U, 0x0728U, 0x11d3U, {0x9d, 0x7b, 0x00, 0x00, 0xf8, 0x1e, 0xf3, 0x2e}};
GUID gdip_membmp_image_format_guid = {0xb96b3caaU, 0x0728U, 0x11d3U, {0x9d, 0x7b, 0x00, 0x00, 0xf8, 0x1e, 0xf3, 0x2e}};
/*
* encoder param guids
*/
GUID GdipEncoderQuality = {0x1d5be4b5U, 0xfa4aU, 0x452dU, {0x9c, 0xdd, 0x5d, 0xb3, 0x51, 0x05, 0xe7, 0xeb}};
GUID GdipEncoderCompression = {0xe09d739dU, 0xccd4U, 0x44eeU, {0x8e, 0xba, 0x3f, 0xbf, 0x8b, 0xe4, 0xfc, 0x58}};
#define DECODERS_SUPPORTED 8
#define ENCODERS_SUPPORTED 5
static BYTE *g_decoder_list;
static int g_decoders = 0;
static BYTE *g_encoder_list;
static int g_encoders = 0;
static ImageFormat
gdip_image_format_for_format_guid (GDIPCONST GUID *formatGUID)
{
if (memcmp (formatGUID, &gdip_bmp_image_format_guid, sizeof (GUID)) == 0)
return BMP;
if (memcmp (formatGUID, &gdip_jpg_image_format_guid, sizeof (GUID)) == 0)
return JPEG;
if (memcmp (formatGUID, &gdip_png_image_format_guid, sizeof (GUID)) == 0)
return PNG;
if (memcmp (formatGUID, &gdip_gif_image_format_guid, sizeof (GUID)) == 0)
return GIF;
if (memcmp (formatGUID, &gdip_tif_image_format_guid, sizeof (GUID)) == 0)
return TIF;
if (memcmp (formatGUID, &gdip_exif_image_format_guid, sizeof (GUID)) == 0)
return EXIF;
if (memcmp (formatGUID, &gdip_wmf_image_format_guid, sizeof (GUID)) == 0)
return WMF;
if (memcmp (formatGUID, &gdip_emf_image_format_guid, sizeof (GUID)) == 0)
return EMF;
if (memcmp (formatGUID, &gdip_ico_image_format_guid, sizeof (GUID)) == 0)
return ICON;
if (memcmp (formatGUID, &gdip_membmp_image_format_guid, sizeof (GUID)) == 0)
return PNG; /* MemoryBmp is saved as PNG */
return INVALID;
}
/* hack #1 - nonplaceable WMF metafiles are supported by no signature match them in the codecs */
static const BYTE nonplaceable_wmf_sig_pattern[] = { 0x01, 0x00, 0x09, 0x00, 0x00, 0x03 };
static const BYTE nonplaceable_wmf_sig_mask[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
static const int nonplaceable_wmf_sig_count = 1;
static const int nonplaceable_wmf_sig_size = 6;
static BOOL
signature_match (char *data, size_t data_size, int size, int count, BYTE* sig_pattern, BYTE* sig_mask)
{
int sig;
for (sig = 0; sig < (size * count); sig += size) {
BOOL match = TRUE;
int p;
for (p = 0; ((p < size) && (p < data_size)); p++) {
BYTE *mask = (BYTE*)(&sig_mask [sig]);
BYTE *pattern = (BYTE*)(&sig_pattern [sig]);
if ((data [p] & mask[p]) != pattern[p]) {
match = FALSE;
break;
}
}
if (match)
return TRUE;
}
return FALSE;
}
static ImageFormat
get_image_format (char *sig_read, size_t size_read, ImageFormat *final)
{
ImageCodecInfo *decoder = (ImageCodecInfo*)g_decoder_list;
int index;
/* look at every decoder available, this will depends on how libgdiplus is compiled */
for (index = 0; index < g_decoders; index++, decoder++) {
/* for each signature in the codec */
if (signature_match (sig_read, size_read, decoder->SigSize, decoder->SigCount, (BYTE*)&decoder->SigPattern[0],
(BYTE*)&decoder->SigMask[0])) {
*final = gdip_image_format_for_format_guid (&decoder->FormatID);
return *final;
}
}
/* last chance - GDI+ still detects some files even if they don't match the codec signatures */
/* [mis-]handle non-placeable metafiles are WMF but reported as EMF (see #81178 for a test case) */
if (signature_match (sig_read, size_read, nonplaceable_wmf_sig_size, nonplaceable_wmf_sig_count,
(BYTE*)&nonplaceable_wmf_sig_pattern[0], (BYTE*)&nonplaceable_wmf_sig_mask[0])) {
*final = EMF;
return WMF;
}
return INVALID;
}
/* Converts the given interpolation value to cairo_filter_t */
static cairo_filter_t
gdip_get_cairo_filter (InterpolationMode imode)
{
cairo_filter_t filter;
switch (imode) {
case InterpolationModeHighQuality:
case InterpolationModeHighQualityBilinear:
case InterpolationModeHighQualityBicubic:
return CAIRO_FILTER_BEST;
case InterpolationModeNearestNeighbor:
return CAIRO_FILTER_NEAREST;
case InterpolationModeBilinear:
return CAIRO_FILTER_BILINEAR;
case InterpolationModeBicubic:
return CAIRO_FILTER_GAUSSIAN;
case InterpolationModeLowQuality:
return CAIRO_FILTER_FAST;
case InterpolationModeDefault:
default:
return CAIRO_FILTER_GOOD;
}
}
void
gdip_image_init (GpImage *image)
{
gdip_bitmap_init(image);
}
static void
copy_pixel (BYTE *src, BYTE *trg, int size)
{
memcpy (trg, src, size);
}
static GpStatus
gdip_flip_x (GpImage *image)
{
BYTE *src;
BYTE *line;
int stride;
int width;
int height;
int pixel_size;
int i;
int j;
stride = image->active_bitmap->stride;
width = image->active_bitmap->width;
height = image->active_bitmap->height;
pixel_size = gdip_get_pixel_format_components (image->active_bitmap->pixel_format) * gdip_get_pixel_format_depth (image->active_bitmap->pixel_format) / 8;
line = GdipAlloc (stride);
src = (BYTE *) image->active_bitmap->scan0;
if (line == NULL) {
return OutOfMemory;
}
for (i = 0; i < height; i++, src += stride) {
memcpy (line, src, stride); /* Save original line */
for (j = 0; j < width; j++) {
copy_pixel(&line[(width - j - 1) * pixel_size], &src[j * pixel_size], pixel_size);
}
}
GdipFree (line);
return Ok;
}
static GpStatus
gdip_flip_y (GpImage *image)
{
BYTE *src;
BYTE *trg;
BYTE *line;
int stride;
int height;
int i;
stride = image->active_bitmap->stride;
height = image->active_bitmap->height;
line = GdipAlloc (stride);
src = (BYTE *) image->active_bitmap->scan0;
trg = (BYTE *) image->active_bitmap->scan0;
trg += (height-1) * stride;
if (line == NULL) {
return OutOfMemory;
}
for (i = 0; i < (height /2); i++, src += stride, trg -= stride) {
memcpy (line, trg, stride); /* Save target line*/
memcpy (trg, src, stride); /* Copy src to trg*/
memcpy (src, line, stride); /* Copy trg to src*/
}
GdipFree (line);
return Ok;
}
GpStatus
GdipDisposeImage (GpImage *image)
{
if (!image)
return InvalidParameter;
switch (image->type) {
case ImageTypeBitmap:
return gdip_bitmap_dispose (image);
case ImageTypeMetafile:
return gdip_metafile_dispose ((GpMetafile*)image);
default: /* imageUndefined */
g_warning ("unknown image type couldn't be disposed, ptr = %d, type %d", image, image->type);
return Ok;
}
}
/* coverity[+alloc : arg-*1] */
GpStatus
GdipGetImageGraphicsContext (GpImage *image, GpGraphics **graphics)
{
GpGraphics *gfx;
cairo_surface_t *surface;
cairo_pattern_t *filter;
if (!image || !graphics)
return InvalidParameter;
/* This function isn't allowed on metafiles - unless we're recording */
if (image->type == ImageTypeMetafile) {
GpMetafile *mf = (GpMetafile*)image;
if (!mf->recording)
return OutOfMemory;
*graphics = gdip_metafile_graphics_new (mf);
return *graphics ? Ok : OutOfMemory;
}
if (!image->active_bitmap)
return InvalidParameter;
/*
* Microsoft GDI+ only supports these pixel formats Format24bppRGB, Format32bppARGB,
* Format32bppPARGB, Format32bppRGB, Format48bppRGB, Format64bppARGB, Format64bppPARGB
* but we're limited to 24/32 inside libgdiplus
*/
switch (image->active_bitmap->pixel_format) {
case PixelFormat24bppRGB:
case PixelFormat32bppARGB:
case PixelFormat32bppPARGB:
case PixelFormat32bppRGB:
break;
default:
return OutOfMemory;
}
surface = cairo_image_surface_create_for_data ((BYTE*) image->active_bitmap->scan0, image->cairo_format,
image->active_bitmap->width, image->active_bitmap->height, image->active_bitmap->stride);
gfx = gdip_graphics_new (surface);
gfx->dpi_x = image->active_bitmap->dpi_horz <= 0 ? gdip_get_display_dpi () : image->active_bitmap->dpi_horz;
gfx->dpi_y = image->active_bitmap->dpi_vert <= 0 ? gdip_get_display_dpi () : image->active_bitmap->dpi_vert;
cairo_surface_destroy (surface);
gfx->image = image;
gfx->type = gtMemoryBitmap;
filter = cairo_pattern_create_for_surface (image->surface);
cairo_pattern_set_filter (filter, gdip_get_cairo_filter (gfx->interpolation));
cairo_pattern_destroy (filter);
*graphics = gfx;
return Ok;
}
GpStatus
GdipDrawImageI (GpGraphics *graphics, GpImage *image, int x, int y)
{
if (!image)
return InvalidParameter;
switch (image->type) {
case ImageTypeBitmap: {
BitmapData *data = image->active_bitmap;
return GdipDrawImageRect (graphics, image, x, y, data->width, data->height);
}
case ImageTypeMetafile: {
MetafileHeader *metaheader = &((GpMetafile*)image)->metafile_header;
return GdipDrawImageRect (graphics, image, x, y, metaheader->Width, metaheader->Height);
}
default:
return InvalidParameter;
}
}
GpStatus
GdipDrawImage (GpGraphics *graphics, GpImage *image, float x, float y)
{
if (!image)
return InvalidParameter;
switch (image->type) {
case ImageTypeBitmap: {
BitmapData *data = image->active_bitmap;
return GdipDrawImageRect (graphics, image, x, y, data->width, data->height);
}
case ImageTypeMetafile: {
MetafileHeader *metaheader = &((GpMetafile*)image)->metafile_header;
return GdipDrawImageRect (graphics, image, x, y, metaheader->Width, metaheader->Height);
}
default:
return InvalidParameter;
}
}
GpStatus
GdipDrawImageRectI (GpGraphics *graphics, GpImage *image, int x, int y, int width, int height)
{
return GdipDrawImageRect (graphics, image, x, y, width, height);
}
GpStatus
GdipDrawImageRect (GpGraphics *graphics, GpImage *image, float x, float y, float width, float height)
{
cairo_pattern_t *pattern;
cairo_pattern_t *org_pattern;
MetafilePlayContext *metacontext = NULL;
BOOL need_scaling = FALSE;
double scaled_width, scaled_height;
cairo_matrix_t orig_matrix;
if (!graphics || !image)
return InvalidParameter;
if ((width <= 0) || (height <= 0))
return Ok;
if (image->type == ImageTypeBitmap) {
/* check does not apply to metafiles, and it's better be done before converting the image */
if (gdip_is_overflow(x) || gdip_is_overflow(y))
return ValueOverflow;
if (gdip_is_an_indexed_pixelformat (image->active_bitmap->pixel_format)) {
GpStatus status = OutOfMemory;
GpBitmap *rgb_bitmap = gdip_convert_indexed_to_rgb (image);
if (rgb_bitmap) {
status = GdipDrawImageRect (graphics, rgb_bitmap, x, y, width, height);
GdipDisposeImage (rgb_bitmap);
}
return status;
}
}
/* conversion must be done after the recursive call to GdipDrawImageRect to remove the indexed bitmap */
if (!OPTIMIZE_CONVERSION (graphics)) {
x = gdip_unitx_convgr (graphics, x);
y = gdip_unity_convgr (graphics, y);
width = gdip_unitx_convgr (graphics, width);
height = gdip_unity_convgr (graphics, height);
}
cairo_new_path (graphics->ct);
/* metafile */
if (image->type == ImageTypeMetafile) {
GpStatus status;
metacontext = gdip_metafile_play_setup ((GpMetafile*)image, graphics, x, y, width, height);
cairo_translate (graphics->ct, x, y);
status = gdip_metafile_play (metacontext);
gdip_metafile_play_cleanup (metacontext);
return status;
}
/* Create a surface for this bitmap if one doesn't exist */
gdip_bitmap_ensure_surface (image);
if (width != image->active_bitmap->width || height != image->active_bitmap->height) {
scaled_width = (double) width / image->active_bitmap->width;
scaled_height = (double) height / image->active_bitmap->height;
need_scaling = TRUE;
}
pattern = cairo_pattern_create_for_surface (image->surface);
cairo_pattern_set_filter (pattern, gdip_get_cairo_filter (graphics->interpolation));
cairo_get_matrix (graphics->ct, &orig_matrix);
cairo_translate (graphics->ct, x, y);
if (need_scaling)
cairo_scale (graphics->ct, scaled_width, scaled_height);
org_pattern = cairo_get_source(graphics->ct);
cairo_pattern_reference(org_pattern);
cairo_set_source (graphics->ct, pattern);
cairo_identity_matrix (graphics->ct);
cairo_paint (graphics->ct);
cairo_set_source (graphics->ct, org_pattern);
cairo_set_matrix (graphics->ct, &orig_matrix);
cairo_pattern_destroy (org_pattern);
cairo_pattern_destroy (pattern);
return Ok;
}
/* points are upper left, upper right, lower left. fourth point is extrapolated. */
GpStatus
GdipDrawImagePoints (GpGraphics *graphics, GpImage *image, GDIPCONST GpPointF *dstPoints, int count)
{
cairo_pattern_t *pattern;
cairo_pattern_t *org_pattern;
GpMatrix *matrix = NULL;
cairo_matrix_t orig_matrix;
GpRectF tRect;
MetafilePlayContext *metacontext = NULL;
if (!graphics || !image || !dstPoints || (count != 3))
return InvalidParameter;
cairo_new_path (graphics->ct);
if (image->type == ImageTypeBitmap) {
if (gdip_is_an_indexed_pixelformat (image->active_bitmap->pixel_format)) {
GpStatus status = OutOfMemory;
GpBitmap *rgb_bitmap = gdip_convert_indexed_to_rgb (image);
if (rgb_bitmap) {
status = GdipDrawImagePoints (graphics, rgb_bitmap, dstPoints, count);
GdipDisposeImage(rgb_bitmap);
}
return status;
}
tRect.Width = image->active_bitmap->width;
tRect.Height = image->active_bitmap->height;
} else {
MetafileHeader *metaheader = &((GpMetafile*)image)->metafile_header;
tRect.Width = metaheader->Width;
tRect.Height = metaheader->Height;
}
tRect.X = 0;
tRect.Y = 0;
GdipCreateMatrix3 (&tRect, dstPoints, &matrix);
/* metafile */
if (image->type == ImageTypeMetafile) {
GpStatus status;
metacontext = gdip_metafile_play_setup ((GpMetafile*)image, graphics, tRect.X, tRect.Y, tRect.Width, tRect.Height);
cairo_get_matrix (graphics->ct, &orig_matrix);
cairo_set_matrix (graphics->ct, matrix);
status = gdip_metafile_play (metacontext);
GdipDeleteMatrix (matrix);
gdip_metafile_play_cleanup (metacontext);
return status;
}
/* Create a surface for this bitmap if one doesn't exist */
gdip_bitmap_ensure_surface (image);
pattern = cairo_pattern_create_for_surface (image->surface);
cairo_pattern_set_filter (pattern, gdip_get_cairo_filter (graphics->interpolation));
org_pattern = cairo_get_source(graphics->ct);
cairo_pattern_reference(org_pattern);
cairo_get_matrix(graphics->ct, &orig_matrix);
cairo_set_matrix (graphics->ct, matrix);
cairo_set_source_surface (graphics->ct, image->surface, 0, 0);
cairo_paint (graphics->ct);
cairo_set_source(graphics->ct, org_pattern);
cairo_set_matrix (graphics->ct, &orig_matrix);
GdipDeleteMatrix (matrix);
cairo_pattern_destroy (org_pattern);
cairo_pattern_destroy (pattern);
return Ok;
}
GpStatus
GdipDrawImagePointsI (GpGraphics *graphics, GpImage *image, GDIPCONST GpPoint *dstPoints, int count)
{
GpPointF points[3];
int i;
if (!dstPoints || (count != 3))
return InvalidParameter;
for (i = 0; i < 3; i++) {
points[i].X = dstPoints[i].X;
points[i].Y = dstPoints[i].Y;
}
return GdipDrawImagePoints (graphics, image, points, 3);
}
GpStatus
GdipDrawImagePointRect (GpGraphics *graphics, GpImage *image, float x, float y, float srcx, float srcy,
float srcwidth, float srcheight, GpUnit srcUnit)
{
return GdipDrawImageRectRect (graphics, image, x, y, srcwidth, srcheight, srcx, srcy,
srcwidth, srcheight, srcUnit, NULL, NULL, NULL);
}
GpStatus
GdipDrawImagePointRectI (GpGraphics *graphics, GpImage *image, int x, int y, int srcx, int srcy,
int srcwidth, int srcheight, GpUnit srcUnit)
{
return GdipDrawImagePointRect (graphics, image, x, y, srcx, srcy, srcwidth, srcheight, srcUnit);
}
GpStatus
GdipDrawImageRectRect (GpGraphics *graphics, GpImage *image,
float dstx, float dsty, float dstwidth, float dstheight,
float srcx, float srcy, float srcwidth, float srcheight,
GpUnit srcUnit,
GDIPCONST GpImageAttributes *imageAttributes,
DrawImageAbort callback, void *callbackData)
{
cairo_pattern_t *pattern;
cairo_pattern_t *orig;
cairo_matrix_t mat;
void *dest;
void *org;
int org_format;
BOOL allocated = FALSE;
if (!graphics || !image)
return InvalidParameter;
switch (srcUnit) {
case UnitPixel:
break;
case UnitPoint:
case UnitInch:
case UnitDocument:
case UnitMillimeter:
if (graphics->type != gtPostScript)
return NotImplemented; /* GDI+ returns the same */
break;
case UnitWorld:
case UnitDisplay:
default:
return InvalidParameter;
}
if (image->type == ImageTypeBitmap) {
if (gdip_is_an_indexed_pixelformat (image->active_bitmap->pixel_format)) {
GpStatus status = OutOfMemory;
GpBitmap *rgb_bitmap = gdip_convert_indexed_to_rgb (image);
if (rgb_bitmap) {
status = GdipDrawImageRectRect (graphics, rgb_bitmap,
dstx, dsty, dstwidth, dstheight,
srcx, srcy, srcwidth, srcheight,
srcUnit, imageAttributes, callback, callbackData);
GdipDisposeImage (rgb_bitmap);
}
return status;
}
} else {
/* metafile support */
return NotImplemented;
}
/* see OPTIMIZE_CONVERSION in general.h */
if ((srcUnit != UnitPixel) && (srcUnit != UnitWorld) && ((srcUnit != UnitDisplay) || (graphics->type != gtPostScript))) {
dstx = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_x, dstx);
dsty = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_y, dsty);
dstwidth = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_x, dstwidth);
dstheight = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_y, dstheight);
srcx = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_x, srcx);
srcy = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_y, srcy);
srcwidth = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_x, srcwidth);
srcheight = gdip_unit_conversion (srcUnit, UnitCairoPoint, graphics->type, graphics->dpi_y, srcheight);
}
org = dest = image->active_bitmap->scan0;
org_format = image->active_bitmap->pixel_format;
gdip_process_bitmap_attributes (image, &dest, (GpImageAttributes *) imageAttributes, &allocated);
/* If allocated is true we have a newly allocated and altered Scan0 in dest */
if (allocated) {
image->active_bitmap->scan0 = dest;
}
/* Drop the existing surface if attributes are being applied since the surface might be out-of-date */
if ((image->surface != NULL) && (imageAttributes != NULL)) {
cairo_surface_destroy (image->surface);
image->surface = NULL;
}
cairo_matrix_init (&mat, 1, 0, 0, 1, 0, 0);
if (imageAttributes && imageAttributes->wrapmode != WrapModeClamp) {
float posx;
float posy;
BOOL flipXOn = (imageAttributes->wrapmode == WrapModeTileFlipX);
BOOL flipYOn = (imageAttributes->wrapmode == WrapModeTileFlipY);
BOOL flipX = FALSE;
BOOL flipY = FALSE;
GpBitmap *cur_image;
GpBitmap *imgflipX = NULL;
GpBitmap *imgflipY = NULL;
GpBitmap *imgflipXY = NULL;
float img_width = image->active_bitmap->width * (dstwidth / srcwidth);
float img_height = image->active_bitmap->height * (dstheight / srcheight);
if (imageAttributes->wrapmode == WrapModeTileFlipXY) {
flipXOn = flipYOn = TRUE;
}
if (flipXOn) {
/* We're ok just cloning the bitmap, we don't need the image data
* and we destroy it before we leave this function */
gdip_bitmap_clone (image, &imgflipX);
gdip_flip_x (imgflipX);
gdip_bitmap_ensure_surface (imgflipX);
}
if (flipYOn) {
gdip_bitmap_clone (image, &imgflipY);
gdip_flip_y (imgflipY);
gdip_bitmap_ensure_surface (imgflipY);
}
if (flipXOn && flipYOn) {
gdip_bitmap_clone (image, &imgflipXY);
gdip_flip_x (imgflipXY);
gdip_flip_y (imgflipXY);
gdip_bitmap_ensure_surface (imgflipXY);
}
gdip_bitmap_ensure_surface (image);
for (posy = 0; posy < dstheight; posy += img_height) {
for (posx = 0; posx < dstwidth; posx += img_width) {
if (flipX && flipY) {
cur_image = imgflipXY;
} else {
if (flipX) {
cur_image = imgflipX;
} else {
if (flipY) {
cur_image = imgflipY;
} else {
cur_image = image;
}
}
}
cairo_matrix_translate (&mat, srcx, srcy);
cairo_matrix_scale (&mat, srcwidth / dstwidth, srcheight / dstheight);
cairo_matrix_translate (&mat, - (dstx + posx), - (dsty + posy));
pattern = cairo_pattern_create_for_surface(cur_image->surface);
cairo_pattern_set_matrix (pattern, &mat);
orig = cairo_get_source(graphics->ct);
cairo_pattern_reference(orig);
cairo_set_source(graphics->ct, pattern);
cairo_rectangle (graphics->ct, dstx + posx, dsty + posy, img_width, img_height);
cairo_fill (graphics->ct);
cairo_set_source(graphics->ct, orig);
cairo_matrix_init_identity (&mat);
cairo_pattern_set_matrix (pattern, &mat);
cairo_pattern_destroy(orig);
cairo_pattern_destroy(pattern);
if (flipXOn) {
flipX = !flipX;
}
}
if (flipYOn) {
flipY = !flipY;
}
}
if (imgflipX) {
GdipDisposeImage ((GpImage *) imgflipX);
}
if (imgflipY) {
GdipDisposeImage ((GpImage *) imgflipY);
}
if (imgflipXY) {
GdipDisposeImage ((GpImage *) imgflipXY);
}
} else {
cairo_pattern_t *filter;
gdip_bitmap_ensure_surface (image);
filter = cairo_pattern_create_for_surface (image->surface);
cairo_pattern_set_filter (filter, gdip_get_cairo_filter (graphics->interpolation));
cairo_matrix_translate (&mat, srcx, srcy);
if (!gdip_near_zero(srcwidth - dstwidth) || !gdip_near_zero(srcheight - dstheight))
cairo_matrix_scale (&mat, srcwidth / dstwidth, srcheight / dstheight);
cairo_matrix_translate (&mat, -dstx, -dsty);
pattern = cairo_pattern_create_for_surface(image->surface);
cairo_pattern_set_matrix (pattern, &mat);
orig = cairo_get_source(graphics->ct);
cairo_pattern_reference(orig);
cairo_set_source(graphics->ct, pattern);
cairo_rectangle (graphics->ct, dstx, dsty, dstwidth, dstheight);
cairo_fill (graphics->ct);
cairo_set_source(graphics->ct, orig);
cairo_pattern_destroy (orig);
cairo_matrix_init_identity (&mat);
cairo_pattern_set_matrix (pattern, &mat);
cairo_pattern_destroy (pattern);
cairo_pattern_destroy (filter);
}
/* The current surface is no longer valid if we had attributes applied */
if (image->surface && imageAttributes != NULL) {
cairo_surface_destroy (image->surface);
image->surface = NULL;
}
if (allocated) {
image->active_bitmap->scan0 = org;
image->active_bitmap->pixel_format = org_format;
GdipFree (dest);
}
return Ok;
}
GpStatus
GdipDrawImageRectRectI (GpGraphics *graphics, GpImage *image, int dstx, int dsty, int dstwidth, int dstheight,
int srcx, int srcy, int srcwidth, int srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes *imageAttributes,
DrawImageAbort callback, void *callbackData)
{
return GdipDrawImageRectRect (graphics, image, dstx, dsty, dstwidth, dstheight,
srcx, srcy, srcwidth, srcheight,
srcUnit,
imageAttributes, callback, callbackData);
}
GpStatus
GdipDrawImagePointsRect (GpGraphics *graphics, GpImage *image, GDIPCONST GpPointF *points, int count, float srcx, float srcy,
float srcwidth, float srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes *imageAttributes, DrawImageAbort callback,
void *callbackData)
{
GpRectF rect;
GpStatus status;
GpMatrix *matrix = NULL;
cairo_matrix_t orig_matrix;
if (!graphics || !image || !points || (count < 3))
return InvalidParameter;
if (count > 3)
return NotImplemented;
rect.X = 0;
rect.Y = 0;
if (image->type == ImageTypeBitmap) {
rect.Width = image->active_bitmap->width;
rect.Height = image->active_bitmap->height;
} else {
MetafileHeader *metaheader = &((GpMetafile*)image)->metafile_header;
rect.Width = metaheader->Width;
rect.Height = metaheader->Height;
}
status = GdipCreateMatrix3 (&rect, points, &matrix);
if (status == Ok) {
cairo_get_matrix (graphics->ct, &orig_matrix);
cairo_set_matrix (graphics->ct, matrix);
status = GdipDrawImageRectRect (graphics, image, rect.X, rect.Y, rect.Width, rect.Height, srcx, srcy,
srcwidth, srcheight, srcUnit, imageAttributes, callback, callbackData);
cairo_set_matrix (graphics->ct, &orig_matrix);
}
if (matrix)
GdipDeleteMatrix (matrix);
return status;
}
GpStatus
GdipDrawImagePointsRectI (GpGraphics *graphics, GpImage *image, GDIPCONST GpPoint *points, int count, int srcx, int srcy,
int srcwidth, int srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes *imageAttributes, DrawImageAbort callback,
void *callbackData)
{
GpPointF pf[3];
if (!points || (count < 3))
return InvalidParameter;
if (count > 3)
return NotImplemented;
pf[0].X = points[0].X;
pf[0].Y = points[0].Y;
pf[1].X = points[1].X;
pf[1].Y = points[1].Y;
pf[2].X = points[2].X;
pf[2].Y = points[2].Y;
return GdipDrawImagePointsRect (graphics, image, (GDIPCONST GpPointF*)&pf, count, srcx, srcy, srcwidth, srcheight,
srcUnit, imageAttributes, callback, callbackData);
}
/*
* These two will never be implemented, as 'stream' is a COM IStream
*/
GpStatus
GdipLoadImageFromStream (void *stream, GpImage **image)
{
return NotImplemented; /* GdipLoadImageFromStream - not supported */
}
GpStatus
GdipSaveImageToStream (GpImage *image, void *stream, GDIPCONST CLSID *encoderCLSID, GDIPCONST EncoderParameters *params)
{
return NotImplemented; /* GdipSaveImageToStream - not supported */
}
/* coverity[+alloc : arg-*1] */
GpStatus
GdipLoadImageFromFile (GDIPCONST WCHAR *file, GpImage **image)
{
FILE *fp = NULL;
GpImage *result = NULL;
GpStatus status = Ok;
ImageFormat format, public_format;
char *file_name = NULL;
char format_peek[MAX_CODEC_SIG_LENGTH];
int format_peek_sz;
if (!image || !file)
return InvalidParameter;
file_name = (char *) ucs2_to_utf8 ((const gunichar2 *)file, -1);
if (!file_name) {
*image = NULL;
return InvalidParameter;
}
fp = fopen (file_name, "rb");
if (!fp) {
GdipFree (file_name);
return OutOfMemory;
}
format_peek_sz = fread (format_peek, 1, MAX_CODEC_SIG_LENGTH, fp);
format = get_image_format (format_peek, format_peek_sz, &public_format);
fseek (fp, 0, SEEK_SET);
switch (format) {
case BMP:
status = gdip_load_bmp_image_from_file (fp, &result);
break;
case TIF:
status = gdip_load_tiff_image_from_file (fp, &result);
break;
case GIF:
status = gdip_load_gif_image_from_file (fp, &result);
break;
case PNG:
status = gdip_load_png_image_from_file (fp, &result);
break;
case JPEG:
status = gdip_load_jpeg_image_from_file (fp, file_name, &result);
break;
case ICON:
status = gdip_load_ico_image_from_file (fp, &result);
break;
case WMF:
status = gdip_load_wmf_image_from_file (fp, &result);
break;
case EMF:
status = gdip_load_emf_image_from_file (fp, &result);
break;
case EXIF:
status = NotImplemented;
break;
default:
status = OutOfMemory;
break;
}
if (result && (status == Ok))
result->image_format = public_format;
fclose (fp);
GdipFree (file_name);
*image = result;
if (status != Ok) {
*image = NULL;
} else if (result && (result->type == ImageTypeBitmap) && !result->active_bitmap) {
/* If the codec didn't set the active bitmap we will */
gdip_bitmap_setactive (result, NULL, 0);
}
return status;
}
/* Note: use only for encoders (there's more decoders than encoders) */
static ImageFormat
gdip_get_imageformat_from_codec_clsid (CLSID *encoderCLSID)
{
GpStatus status;
UINT numEncoders, size, cnt;
ImageCodecInfo *encoders, *encoder;
status = GdipGetImageEncodersSize (&numEncoders, &size);
if ((status != Ok) ||(numEncoders == 0))
return INVALID;
encoders = GdipAlloc (size);
status = GdipGetImageEncoders (numEncoders, size, encoders);
if (status != Ok)
return INVALID;
for (cnt = 0, encoder = encoders; cnt < numEncoders; cnt++, encoder++) {
if (memcmp (&encoder->Clsid, encoderCLSID, sizeof (GUID)) == 0) {
ImageFormat ifmt = gdip_image_format_for_format_guid (&encoder->FormatID);
GdipFree (encoders);
return ifmt;
}
}