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cairo/src/cairo-directfb-surface.c
Chris Wilson 901f0b540c Review backend->create_similar() 
Avoid masking fatal errors by enforcing any error to be returned via an
error surface, so that the NULL return only means UNSUPPORTED. A few
backends called their create_similar() directly, without correctly checking
for a potential NULL (for example, the directfb backend was a timebomb,
since it used NULL to indicate out-of-memory).
2008-10-19 09:36:49 +01:00

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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2003 University of Southern California
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is University of Southern
* California.
*
* Contributor(s):
* Michael Emmel <mike.emmel@gmail.com>
* Claudio Ciccani <klan@users.sf.net>
*/
#include "cairoint.h"
#include "cairo-directfb.h"
#include <stdlib.h>
#include <directfb.h>
#include <direct/types.h>
#include <direct/debug.h>
#include <direct/memcpy.h>
#include <direct/util.h>
/*
* Rectangle works fine.
* Bugs 361377, 359553, 359243 in Gnome BTS are caused
* by GDK/DirectFB, not by Cairo/DirectFB.
*/
#define DFB_RECTANGLES 1
/*
* Composite works fine.
*/
#define DFB_COMPOSITE 1
/*
* CompositeTrapezoids works (without antialiasing).
*/
#define DFB_COMPOSITE_TRAPEZOIDS 1
/*
* ShowGlyphs works fine.
*/
#define DFB_SHOW_GLYPHS 1
D_DEBUG_DOMAIN( CairoDFB_Acquire, "CairoDFB/Acquire", "Cairo DirectFB Acquire" );
D_DEBUG_DOMAIN( CairoDFB_Clip, "CairoDFB/Clip", "Cairo DirectFB Clipping" );
D_DEBUG_DOMAIN( CairoDFB_Font, "CairoDFB/Font", "Cairo DirectFB Font Rendering" );
D_DEBUG_DOMAIN( CairoDFB_Render, "CairoDFB/Render", "Cairo DirectFB Rendering" );
D_DEBUG_DOMAIN( CairoDFB_Surface, "CairoDFB/Surface", "Cairo DirectFB Surface" );
/*****************************************************************************/
typedef struct _cairo_directfb_surface {
cairo_surface_t base;
cairo_format_t format;
cairo_content_t content;
IDirectFB *dfb;
IDirectFBSurface *dfbsurface;
IDirectFBSurface *tmpsurface;
/* color buffer */
cairo_surface_t *color;
DFBRegion *clips;
int n_clips;
int width;
int height;
cairo_bool_t local;
} cairo_directfb_surface_t;
typedef struct _cairo_directfb_font_cache {
IDirectFB *dfb;
IDirectFBSurface *dfbsurface;
int width;
int height;
/* coordinates within the surface
* of the last loaded glyph */
int x;
int y;
} cairo_directfb_font_cache_t;
static cairo_surface_backend_t cairo_directfb_surface_backend;
/*****************************************************************************/
static int _directfb_argb_font = 0;
/*****************************************************************************/
#define RUN_CLIPPED( surface, clip, func ) {\
if ((surface)->clips) {\
int k;\
for (k = 0; k < (surface)->n_clips; k++) {\
if (clip) {\
DFBRegion reg = (surface)->clips[k];\
DFBRegion *cli = (clip);\
if (reg.x2 < cli->x1 || reg.y2 < cli->y1 ||\
reg.x1 > cli->x2 || reg.y1 > cli->y2)\
continue;\
if (reg.x1 < cli->x1)\
reg.x1 = cli->x1;\
if (reg.y1 < cli->y1)\
reg.y1 = cli->y1;\
if (reg.x2 > cli->x2)\
reg.x2 = cli->x2;\
if (reg.y2 > cli->y2)\
reg.y2 = cli->y2;\
(surface)->dfbsurface->SetClip ((surface)->dfbsurface, &reg);\
}\
else {\
(surface)->dfbsurface->SetClip ((surface)->dfbsurface,\
&(surface)->clips[k]);\
}\
func;\
}\
}\
else {\
(surface)->dfbsurface->SetClip ((surface)->dfbsurface, clip);\
func;\
}\
}
#define TRANSFORM_POINT2X( m, x, y, ret_x, ret_y ) {\
double _x = (x);\
double _y = (y);\
(ret_x) = (_x * (m).xx + (m).x0);\
(ret_y) = (_y * (m).yy + (m).y0);\
}
#define TRANSFORM_POINT3X( m, x, y, ret_x, ret_y ) {\
double _x = (x);\
double _y = (y);\
(ret_x) = (_x * (m).xx + _y * (m).xy + (m).x0);\
(ret_y) = (_x * (m).yx + _y * (m).yy + (m).y0);\
}
/* XXX: A1 has a different bits ordering in cairo.
* Probably we should drop it.
*/
static cairo_content_t
_directfb_format_to_content (DFBSurfacePixelFormat format)
{
if (DFB_PIXELFORMAT_HAS_ALPHA(format)) {
if (DFB_COLOR_BITS_PER_PIXEL(format))
return CAIRO_CONTENT_COLOR_ALPHA;
return CAIRO_CONTENT_ALPHA;
}
return CAIRO_CONTENT_COLOR;
}
static inline DFBSurfacePixelFormat
_cairo_to_directfb_format (cairo_format_t format)
{
switch (format) {
case CAIRO_FORMAT_RGB24:
return DSPF_RGB32;
case CAIRO_FORMAT_ARGB32:
return DSPF_ARGB;
case CAIRO_FORMAT_A8:
return DSPF_A8;
case CAIRO_FORMAT_A1:
return DSPF_A1;
default:
break;
}
return -1;
}
static inline cairo_format_t
_directfb_to_cairo_format (DFBSurfacePixelFormat format)
{
switch (format) {
case DSPF_RGB32:
return CAIRO_FORMAT_RGB24;
case DSPF_ARGB:
return CAIRO_FORMAT_ARGB32;
case DSPF_A8:
return CAIRO_FORMAT_A8;
case DSPF_A1:
return CAIRO_FORMAT_A1;
default:
break;
}
return -1;
}
static cairo_status_t
_directfb_get_operator (cairo_operator_t operator,
DFBSurfaceBlendFunction *ret_srcblend,
DFBSurfaceBlendFunction *ret_dstblend )
{
DFBSurfaceBlendFunction srcblend = DSBF_ONE;
DFBSurfaceBlendFunction dstblend = DSBF_ZERO;
switch (operator) {
case CAIRO_OPERATOR_CLEAR:
srcblend = DSBF_ZERO;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_SOURCE:
srcblend = DSBF_ONE;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_OVER:
srcblend = DSBF_ONE;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_IN:
srcblend = DSBF_DESTALPHA;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_OUT:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_ATOP:
srcblend = DSBF_DESTALPHA;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_DEST:
srcblend = DSBF_ZERO;
dstblend = DSBF_ONE;
break;
case CAIRO_OPERATOR_DEST_OVER:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_ONE;
break;
case CAIRO_OPERATOR_DEST_IN:
srcblend = DSBF_ZERO;
dstblend = DSBF_SRCALPHA;
break;
case CAIRO_OPERATOR_DEST_OUT:
srcblend = DSBF_ZERO;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_DEST_ATOP:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_SRCALPHA;
break;
case CAIRO_OPERATOR_XOR:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_ADD:
srcblend = DSBF_ONE;
dstblend = DSBF_ONE;
break;
case CAIRO_OPERATOR_SATURATE:
srcblend = DSBF_SRCALPHASAT;
dstblend = DSBF_ONE;
break;
default:
return CAIRO_INT_STATUS_UNSUPPORTED;
}
if (ret_srcblend)
*ret_srcblend = srcblend;
if (ret_dstblend)
*ret_dstblend = dstblend;
return CAIRO_STATUS_SUCCESS;
}
static IDirectFBSurface*
_directfb_buffer_surface_create (IDirectFB *dfb,
DFBSurfacePixelFormat format,
int width,
int height)
{
IDirectFBSurface *buffer;
DFBSurfaceDescription dsc;
DFBResult ret;
dsc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT;
dsc.width = width;
dsc.height = height;
dsc.pixelformat = format;
ret = dfb->CreateSurface (dfb, &dsc, &buffer);
if (ret) {
DirectFBError ("IDirectFB::CreateSurface()", ret);
return NULL;
}
return buffer;
}
static cairo_status_t
_directfb_acquire_surface (cairo_directfb_surface_t *surface,
cairo_rectangle_int_t *intrest_rec,
cairo_image_surface_t **image_out,
cairo_rectangle_int_t *image_rect_out,
void **image_extra,
DFBSurfaceLockFlags lock_flags)
{
IDirectFBSurface *buffer = NULL;
DFBRectangle source_rect;
cairo_format_t cairo_format;
void *data;
int pitch;
if (surface->format == (cairo_format_t) -1) {
DFBSurfaceCapabilities caps;
if (intrest_rec) {
source_rect.x = intrest_rec->x;
source_rect.y = intrest_rec->y;
source_rect.w = intrest_rec->width;
source_rect.h = intrest_rec->height;
} else {
source_rect.x = 0;
source_rect.y = 0;
surface->dfbsurface->GetSize (surface->dfbsurface,
&source_rect.w, &source_rect.h);
}
if (surface->tmpsurface) {
int w, h;
surface->tmpsurface->GetSize (surface->tmpsurface, &w, &h);
if (w < source_rect.w || h < source_rect.h) {
surface->tmpsurface->Release (surface->tmpsurface);
surface->tmpsurface = NULL;
}
}
cairo_format = _cairo_format_from_content (surface->content);
if (!surface->tmpsurface) {
D_DEBUG_AT (CairoDFB_Acquire, "Allocating buffer for surface %p.\n", surface);
surface->tmpsurface =
_directfb_buffer_surface_create (surface->dfb,
_cairo_to_directfb_format (cairo_format),
source_rect.w, source_rect.h);
if (!surface->tmpsurface)
goto ERROR;
}
buffer = surface->tmpsurface;
/* surface->dfbsurface->GetCapabilities (surface->dfbsurface, &caps);
if (caps & DSCAPS_FLIPPING) {
DFBRegion region = { .x1 = source_rect.x, .y1 = source_rect.y,
.x2 = source_rect.x + source_rect.w - 1,
.y2 = source_rect.y + source_rect.h - 1 };
surface->dfbsurface->Flip (surface->dfbsurface, &region, DSFLIP_BLIT);
} */
buffer->Blit (buffer, surface->dfbsurface, &source_rect, 0, 0);
}
else {
/*might be a subsurface get the offset*/
surface->dfbsurface->GetVisibleRectangle (surface->dfbsurface, &source_rect);
cairo_format = surface->format;
buffer = surface->dfbsurface;
}
*image_extra = buffer;
if (buffer->Lock (buffer, lock_flags, &data, &pitch)) {
D_DEBUG_AT (CairoDFB_Acquire, "Couldn't lock surface!\n");
goto ERROR;
}
*image_out = (cairo_image_surface_t *)
cairo_image_surface_create_for_data (data, cairo_format,
source_rect.w, source_rect.h, pitch);
if (*image_out == NULL)
goto ERROR;
if (image_rect_out) {
image_rect_out->x = source_rect.x;
image_rect_out->y = source_rect.y;
image_rect_out->width = source_rect.w;
image_rect_out->height = source_rect.h;
} else {
/* lock for read */
cairo_surface_t *sur = &((*image_out)->base);
/* might be a subsurface */
if (buffer == surface->dfbsurface)
cairo_surface_set_device_offset (sur, source_rect.x, source_rect.y);
}
return CAIRO_STATUS_SUCCESS;
ERROR:
*image_extra = NULL;
if (buffer) {
buffer->Unlock (buffer);
if (buffer != surface->dfbsurface)
buffer->Release (buffer);
}
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
static cairo_surface_t *
_cairo_directfb_surface_create_similar (void *abstract_src,
cairo_content_t content,
int width,
int height)
{
cairo_directfb_surface_t *source = abstract_src;
cairo_directfb_surface_t *surface;
cairo_format_t format;
D_DEBUG_AT (CairoDFB_Surface,
"%s( src=%p, content=0x%x, width=%d, height=%d).\n",
__FUNCTION__, source, content, width, height);
width = (width <= 0) ? 1 : width;
height = (height<= 0) ? 1 : height;
format = _cairo_format_from_content (content);
surface = calloc (1, sizeof(cairo_directfb_surface_t));
if (surface == NULL)
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
surface->dfb = source->dfb;
if (width < 8 || height < 8) {
IDirectFBSurface *tmp;
/* Some cards (e.g. Matrox) don't support surfaces smaller than 8x8 */
tmp = _directfb_buffer_surface_create (surface->dfb,
_cairo_to_directfb_format (format),
MAX (width, 8), MAX (height, 8));
if (tmp) {
DFBRectangle rect = { .x=0, .y=0, .w=width, .h=height };
tmp->GetSubSurface (tmp, &rect, &surface->dfbsurface);
tmp->Release (tmp);
}
}
else {
surface->dfbsurface = _directfb_buffer_surface_create (surface->dfb,
_cairo_to_directfb_format (format), width, height);
}
if (!surface->dfbsurface) {
D_ASSERT (surface->dfbsurface != NULL);
free (surface);
return NULL;
}
_cairo_surface_init (&surface->base, &cairo_directfb_surface_backend, content);
surface->format = format;
surface->content = content;
surface->width = width;
surface->height = height;
surface->local = true;
return &surface->base;
}
static cairo_status_t
_cairo_directfb_surface_finish (void *data)
{
cairo_directfb_surface_t *surface = (cairo_directfb_surface_t *)data;
D_DEBUG_AT (CairoDFB_Surface, "%s( surface=%p ).\n", __FUNCTION__, surface);
if (surface->clips) {
free (surface->clips);
surface->clips = NULL;
surface->n_clips = 0;
}
if (surface->color) {
cairo_surface_destroy (surface->color);
surface->color = NULL;
}
if (surface->tmpsurface) {
surface->tmpsurface->Release (surface->tmpsurface);
surface->tmpsurface = NULL;
}
if (surface->dfbsurface) {
surface->dfbsurface->Release (surface->dfbsurface);
surface->dfbsurface = NULL;
}
if (surface->dfb)
surface->dfb = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_directfb_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p ).\n", __FUNCTION__, surface);
return _directfb_acquire_surface (surface, NULL, image_out,
NULL, image_extra, DSLF_READ);
}
static void
_cairo_directfb_surface_release_source_image (void *abstract_surface,
cairo_image_surface_t *image,
void *image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
IDirectFBSurface *buffer = image_extra;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p ).\n", __FUNCTION__, surface);
buffer->Unlock (buffer);
cairo_surface_destroy (&image->base);
}
static cairo_status_t
_cairo_directfb_surface_acquire_dest_image (void *abstract_surface,
cairo_rectangle_int_t *interest_rect,
cairo_image_surface_t **image_out,
cairo_rectangle_int_t *image_rect_out,
void **image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p (%dx%d), interest_rect={ %u %u %u %u } ).\n",
__FUNCTION__, surface, surface->width, surface->height,
interest_rect ? interest_rect->x : 0,
interest_rect ? interest_rect->y : 0,
interest_rect ? interest_rect->width : (unsigned) surface->width,
interest_rect ? interest_rect->height : (unsigned) surface->height);
return _directfb_acquire_surface (surface, interest_rect, image_out,
image_rect_out, image_extra, DSLF_READ | DSLF_WRITE);
}
static void
_cairo_directfb_surface_release_dest_image (void *abstract_surface,
cairo_rectangle_int_t *interest_rect,
cairo_image_surface_t *image,
cairo_rectangle_int_t *image_rect,
void *image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
IDirectFBSurface *buffer = image_extra;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p ).\n", __FUNCTION__, surface);
buffer->Unlock (buffer);
if (surface->dfbsurface != buffer) {
DFBRegion region = { .x1 = interest_rect->x, .y1 = interest_rect->y,
.x2 = interest_rect->x+interest_rect->width-1,
.y2 = interest_rect->y+interest_rect->height-1 };
surface->dfbsurface->SetClip (surface->dfbsurface, &region);
surface->dfbsurface->SetBlittingFlags (surface->dfbsurface, DSBLIT_NOFX);
surface->dfbsurface->Blit (surface->dfbsurface, buffer,
NULL, image_rect->x, image_rect->y);
}
cairo_surface_destroy (&image->base);
}
static cairo_status_t
_cairo_directfb_surface_clone_similar (void *abstract_surface,
cairo_surface_t *src,
int src_x,
int src_y,
int width,
int height,
int *clone_offset_x,
int *clone_offset_y,
cairo_surface_t **clone_out)
{
cairo_directfb_surface_t *surface = abstract_surface;
cairo_directfb_surface_t *clone;
D_DEBUG_AT (CairoDFB_Surface,
"%s( surface=%p, src=%p ).\n", __FUNCTION__, surface, src);
if (src->backend == surface->base.backend) {
*clone_offset_x = 0;
*clone_offset_y = 0;
*clone_out = cairo_surface_reference (src);
return CAIRO_STATUS_SUCCESS;
}
else if (_cairo_surface_is_image (src)) {
cairo_image_surface_t *image_src = (cairo_image_surface_t *) src;
unsigned char *dst, *src = image_src->data;
int pitch;
int i, j;
DFBResult ret;
clone = (cairo_directfb_surface_t *)
_cairo_directfb_surface_create_similar (surface,
_cairo_content_from_format (image_src->format),
image_src->width, image_src->height);
if (clone == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (clone->base.status)
return clone->base.status;
ret = clone->dfbsurface->Lock (clone->dfbsurface,
DSLF_WRITE, (void *)&dst, &pitch);
if (ret) {
DirectFBError ("IDirectFBSurface::Lock()", ret);
cairo_surface_destroy ((cairo_surface_t *)clone);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
dst += pitch * src_y;
src += image_src->stride * src_y;
if (image_src->format == CAIRO_FORMAT_A1) {
/* A1 -> A8 */
for (i = 0; i < height; i++) {
for (j = src_x; j < src_x + width; j++)
dst[j] = (src[j>>3] & (1 << (j&7))) ? 0xff : 0x00;
dst += pitch;
src += image_src->stride;
}
}
else {
int len;
if (image_src->format == CAIRO_FORMAT_A8) {
dst += src_x;
src += src_x;
len = width;
} else {
dst += src_x * 4;
src += src_x * 4;
len = width * 4;
}
for (i = 0; i < height; i++) {
direct_memcpy (dst, src, len);
dst += pitch;
src += image_src->stride;
}
}
clone->dfbsurface->Unlock (clone->dfbsurface);
*clone_offset_x = 0;
*clone_offset_y = 0;
*clone_out = &clone->base;
return CAIRO_STATUS_SUCCESS;
}
return CAIRO_INT_STATUS_UNSUPPORTED;
}
#if DFB_COMPOSITE || DFB_COMPOSITE_TRAPEZOIDS
static cairo_int_status_t
_directfb_prepare_composite (cairo_directfb_surface_t *dst,
cairo_pattern_t *src_pattern,
cairo_pattern_t *mask_pattern,
cairo_operator_t op,
int *src_x, int *src_y,
int *mask_x, int *mask_y,
unsigned int width,
unsigned int height,
cairo_directfb_surface_t **ret_src,
cairo_surface_attributes_t *ret_src_attr)
{
cairo_directfb_surface_t *src;
cairo_surface_attributes_t src_attr;
cairo_status_t ret;
DFBSurfaceBlittingFlags flags;
DFBSurfaceBlendFunction sblend;
DFBSurfaceBlendFunction dblend;
DFBColor color;
if (_directfb_get_operator (op, &sblend, &dblend))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (mask_pattern) {
cairo_solid_pattern_t *pattern;
if (mask_pattern->type != CAIRO_PATTERN_TYPE_SOLID) {
cairo_pattern_t *tmp;
int tmp_x, tmp_y;
if (src_pattern->type != CAIRO_PATTERN_TYPE_SOLID ||
sblend == DSBF_INVDESTALPHA) /* Doesn't work correctly */
return CAIRO_INT_STATUS_UNSUPPORTED;
D_DEBUG_AT (CairoDFB_Render, "Replacing src pattern by mask pattern.\n");
tmp = src_pattern;
tmp_x = *src_x; tmp_y = *src_y;
src_pattern = mask_pattern;
*src_x = *mask_x; *src_y = *mask_y;
mask_pattern = tmp;
*mask_x = tmp_x; *mask_y = tmp_y;
if (sblend == DSBF_ONE) {
sblend = DSBF_SRCALPHA;
/*dblend = DSBF_INVSRCALPHA;*/
}
}
pattern = (cairo_solid_pattern_t *)mask_pattern;
color.a = pattern->color.alpha_short >> 8;
color.r = pattern->color.red_short >> 8;
color.g = pattern->color.green_short >> 8;
color.b = pattern->color.blue_short >> 8;
}
else {
color.a = color.r = color.g = color.b = 0xff;
}
if (src_pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
cairo_solid_pattern_t *pattern = (cairo_solid_pattern_t *)src_pattern;
if (!dst->color) {
dst->color = _cairo_directfb_surface_create_similar (dst,
CAIRO_CONTENT_COLOR_ALPHA, 1, 1);
if (dst->color == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (dst->color->base.status)
return (dst->color->base.status);
}
src = (cairo_directfb_surface_t *)dst->color;
src->dfbsurface->Clear (src->dfbsurface,
pattern->color.red_short >> 8,
pattern->color.green_short >> 8,
pattern->color.blue_short >> 8,
pattern->color.alpha_short >> 8);
src_attr.matrix = src_pattern->matrix;
src_attr.extend = CAIRO_EXTEND_NONE;
src_attr.filter = CAIRO_FILTER_NEAREST;
src_attr.x_offset =
src_attr.y_offset = 0;
}
else {
ret = _cairo_pattern_acquire_surface (src_pattern, &dst->base,
*src_x, *src_y, width, height,
(cairo_surface_t **)&src, &src_attr);
if (ret)
return ret;
}
if (src->content == CAIRO_CONTENT_COLOR) {
if (sblend == DSBF_SRCALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVSRCALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_SRCALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVSRCALPHA)
dblend = DSBF_ZERO;
}
if (dst->content == CAIRO_CONTENT_COLOR) {
if (sblend == DSBF_DESTALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVDESTALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_DESTALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVDESTALPHA)
dblend = DSBF_ZERO;
}
flags = (sblend == DSBF_ONE && dblend == DSBF_ZERO)
? DSBLIT_NOFX : DSBLIT_BLEND_ALPHACHANNEL;
if (color.a != 0xff)
flags |= DSBLIT_BLEND_COLORALPHA;
if (color.r != 0xff || color.g != 0xff || color.b != 0xff)
flags |= DSBLIT_COLORIZE;
dst->dfbsurface->SetBlittingFlags (dst->dfbsurface, flags);
if (flags & (DSBLIT_BLEND_ALPHACHANNEL | DSBLIT_BLEND_COLORALPHA)) {
dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
}
if (flags & (DSBLIT_BLEND_COLORALPHA | DSBLIT_COLORIZE))
dst->dfbsurface->SetColor (dst->dfbsurface, color.r, color.g, color.b, color.a);
*ret_src = src;
*ret_src_attr = src_attr;
return CAIRO_STATUS_SUCCESS;
}
static void
_directfb_finish_composite (cairo_directfb_surface_t *dst,
cairo_pattern_t *src_pattern,
cairo_surface_t *src,
cairo_surface_attributes_t *src_attr)
{
if (src != dst->color)
_cairo_pattern_release_surface (src_pattern, src, src_attr);
}
#endif /* DFB_COMPOSITE || DFB_COMPOSITE_TRAPEZOIDS */
#if DFB_COMPOSITE
static DFBAccelerationMask
_directfb_categorize_operation (cairo_surface_attributes_t *src_attr)
{
cairo_matrix_t *m = &src_attr->matrix;
if (m->xy != 0 || m->yx != 0 || m->xx < 0 || m->yy < 0) {
if (src_attr->extend != CAIRO_EXTEND_NONE)
return DFXL_NONE;
return DFXL_TEXTRIANGLES;
}
if (m->xx != 1 || m->yy != 1) {
if (src_attr->extend != CAIRO_EXTEND_NONE)
return DFXL_NONE;
return DFXL_STRETCHBLIT;
}
if (src_attr->extend != CAIRO_EXTEND_NONE &&
src_attr->extend != CAIRO_EXTEND_REPEAT)
return DFXL_NONE;
return DFXL_BLIT;
}
static cairo_int_status_t
_cairo_directfb_surface_composite (cairo_operator_t op,
cairo_pattern_t *src_pattern,
cairo_pattern_t *mask_pattern,
void *abstract_dst,
int src_x, int src_y,
int mask_x, int mask_y,
int dst_x, int dst_y,
unsigned int width,
unsigned int height)
{
cairo_directfb_surface_t *dst = abstract_dst;
cairo_directfb_surface_t *src;
cairo_surface_attributes_t src_attr;
DFBAccelerationMask accel, mask;
cairo_int_status_t ret;
D_DEBUG_AT (CairoDFB_Render,
"%s( op=%d, src_pattern=%p, mask_pattern=%p, dst=%p,"
" src_x=%d, src_y=%d, mask_x=%d, mask_y=%d, dst_x=%d,"
" dst_y=%d, width=%u, height=%u ).\n",
__FUNCTION__, op, src_pattern, mask_pattern, dst,
src_x, src_y, mask_x, mask_y, dst_x, dst_y, width, height);
ret = _directfb_prepare_composite (dst, src_pattern, mask_pattern, op,
&src_x, &src_y, &mask_x, &mask_y,
width, height, &src, &src_attr);
if (ret)
return ret;
accel = _directfb_categorize_operation (&src_attr);
dst->dfbsurface->GetAccelerationMask (dst->dfbsurface, src->dfbsurface, &mask);
if (!(mask & accel)) {
D_DEBUG_AT (CairoDFB_Render, "No acceleration (%08x)!\n", accel);
if (accel != DFXL_BLIT) {
_directfb_finish_composite (dst, src_pattern, &src->base, &src_attr);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
}
src_x += src_attr.x_offset;
src_y += src_attr.y_offset;
switch (accel) {
case DFXL_BLIT: {
DFBRectangle sr;
sr.x = src_x + _cairo_lround (src_attr.matrix.x0);
sr.y = src_y + _cairo_lround (src_attr.matrix.y0);
sr.w = width;
sr.h = height;
if (src_attr.extend == CAIRO_EXTEND_NONE) {
D_DEBUG_AT (CairoDFB_Render, "Running Blit().\n");
RUN_CLIPPED( dst, NULL,
dst->dfbsurface->Blit (dst->dfbsurface,
src->dfbsurface, &sr, dst_x, dst_y));
}
else if (src_attr.extend == CAIRO_EXTEND_REPEAT) {
DFBRegion clip;
clip.x1 = dst_x;
clip.y1 = dst_y;
clip.x2 = dst_x + width - 1;
clip.y2 = dst_y + height - 1;
D_DEBUG_AT (CairoDFB_Render, "Running TileBlit().\n");
RUN_CLIPPED( dst, &clip,
dst->dfbsurface->TileBlit (dst->dfbsurface,
src->dfbsurface, &sr, dst_x, dst_y));
}
} break;
case DFXL_STRETCHBLIT: {
DFBRectangle sr, dr;
double x1, y1, x2, y2;
TRANSFORM_POINT2X (src_attr.matrix,
src_x, src_y, x1, y1);
TRANSFORM_POINT2X (src_attr.matrix,
src_x+width, src_y+height, x2, y2);
sr.x = _cairo_lround (x1);
sr.y = _cairo_lround (y1);
sr.w = _cairo_lround (x2-x1);
sr.h = _cairo_lround (y2-y1);
dr.x = dst_x;
dr.y = dst_y;
dr.w = width;
dr.h = height;
D_DEBUG_AT (CairoDFB_Render, "Running StretchBlit().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->StretchBlit (dst->dfbsurface,
src->dfbsurface, &sr, &dr));
} break;
case DFXL_TEXTRIANGLES: {
DFBRegion clip;
DFBVertex v[4];
float x1, y1, x2, y2;
int w, h;
if (cairo_matrix_invert (&src_attr.matrix) != CAIRO_STATUS_SUCCESS) {
ret = CAIRO_INT_STATUS_UNSUPPORTED;
break;
}
x1 = src_attr.x_offset;
y1 = src_attr.y_offset;
x2 = src->width - x1;
y2 = src->height - y1;
src->dfbsurface->GetSize (src->dfbsurface, &w, &h);
TRANSFORM_POINT3X (src_attr.matrix,
x1, y1, v[0].x, v[0].y);
v[0].z = 0;
v[0].w = 1;
v[0].s = x1 / w;
v[0].t = y1 / h;
TRANSFORM_POINT3X (src_attr.matrix,
x2, y1, v[1].x, v[1].y);
v[1].z = 0;
v[1].w = 1;
v[1].s = x2 / w;
v[1].t = y1 / h;
TRANSFORM_POINT3X (src_attr.matrix,
x2, y2, v[2].x, v[2].y);
v[2].z = 0;
v[2].w = 1;
v[2].s = x2 / w;
v[2].t = y2 / h;
TRANSFORM_POINT3X (src_attr.matrix,
x1, y2, v[3].x, v[3].y);
v[3].z = 0;
v[3].w = 1;
v[3].s = x1 / w;
v[3].t = y2 / h;
clip.x1 = dst_x;
clip.y1 = dst_y;
clip.x2 = dst_x + width - 1;
clip.y2 = dst_y + height - 1;
D_DEBUG_AT (CairoDFB_Render, "Running TextureTriangles().\n");
RUN_CLIPPED (dst, &clip,
dst->dfbsurface->TextureTriangles (dst->dfbsurface,
src->dfbsurface, v, NULL, 4, DTTF_FAN));
} break;
default:
D_BUG ("Unexpected operation");
break;
}
_directfb_finish_composite (dst, src_pattern, &src->base, &src_attr);
return ret;
}
#endif /* DFB_COMPOSITE */
#if DFB_RECTANGLES
static cairo_int_status_t
_cairo_directfb_surface_fill_rectangles (void *abstract_surface,
cairo_operator_t op,
const cairo_color_t *color,
cairo_rectangle_int_t *rects,
int n_rects)
{
cairo_directfb_surface_t *dst = abstract_surface;
DFBSurfaceDrawingFlags flags;
DFBSurfaceBlendFunction sblend;
DFBSurfaceBlendFunction dblend;
DFBRectangle r[n_rects];
int i;
D_DEBUG_AT (CairoDFB_Render,
"%s( dst=%p, op=%d, color=%p, rects=%p, n_rects=%d ).\n",
__FUNCTION__, dst, op, color, rects, n_rects);
if (_directfb_get_operator (op, &sblend, &dblend))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (color->alpha_short >= 0xff00) {
if (sblend == DSBF_SRCALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVSRCALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_SRCALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVSRCALPHA)
dblend = DSBF_ZERO;
}
if (dst->content == CAIRO_CONTENT_COLOR) {
if (sblend == DSBF_DESTALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVDESTALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_DESTALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVDESTALPHA)
dblend = DSBF_ZERO;
}
flags = (sblend == DSBF_ONE && dblend == DSBF_ZERO) ? DSDRAW_NOFX : DSDRAW_BLEND;
dst->dfbsurface->SetDrawingFlags (dst->dfbsurface, flags);
if (flags & DSDRAW_BLEND) {
dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
}
dst->dfbsurface->SetColor (dst->dfbsurface,
color->red_short >> 8,
color->green_short >> 8,
color->blue_short >> 8,
color->alpha_short >> 8 );
for (i = 0; i < n_rects; i++) {
r[i].x = rects[i].x;
r[i].y = rects[i].y;
r[i].w = rects[i].width;
r[i].h = rects[i].height;
}
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->FillRectangles (dst->dfbsurface, r, n_rects));
return CAIRO_STATUS_SUCCESS;
}
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
static cairo_int_status_t
_cairo_directfb_surface_composite_trapezoids (cairo_operator_t op,
cairo_pattern_t *pattern,
void *abstract_dst,
cairo_antialias_t antialias,
int src_x, int src_y,
int dst_x, int dst_y,
unsigned int width,
unsigned int height,
cairo_trapezoid_t *traps,
int num_traps )
{
cairo_directfb_surface_t *dst = abstract_dst;
cairo_directfb_surface_t *src;
cairo_surface_attributes_t src_attr;
cairo_status_t ret;
DFBAccelerationMask accel;
D_DEBUG_AT (CairoDFB_Render,
"%s( op=%d, pattern=%p, dst=%p, antialias=%d,"
" src_x=%d, src_y=%d, dst_x=%d, dst_y=%d,"
" width=%u, height=%u, traps=%p, num_traps=%d ).\n",
__FUNCTION__, op, pattern, dst, antialias,
src_x, src_y, dst_x, dst_y, width, height, traps, num_traps);
if (antialias != CAIRO_ANTIALIAS_NONE)
return CAIRO_INT_STATUS_UNSUPPORTED;
/* Textures are not supported yet. */
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
return CAIRO_INT_STATUS_UNSUPPORTED;
ret = _directfb_prepare_composite (dst, pattern, NULL, op,
&src_x, &src_y, NULL, NULL,
width, height, &src, &src_attr);
if (ret)
return ret;
dst->dfbsurface->GetAccelerationMask (dst->dfbsurface, src->dfbsurface, &accel);
ret = CAIRO_INT_STATUS_UNSUPPORTED;
if (accel & DFXL_TEXTRIANGLES) {
DFBVertex vertex[6*num_traps];
DFBVertex *v = &vertex[0];
int n;
#define ADD_TRI(id, x1, y1, s1, t1, x2, y2, s2, t2, x3, y3, s3, t3) {\
const int p = (id)*3;\
v[p+0].x=(x1); v[p+0].y=(y1); v[p+0].z=0; v[p+0].w=1; v[p+0].s=(s1); v[p+0].t=(t1);\
v[p+1].x=(x2); v[p+1].y=(y2); v[p+1].z=0; v[p+1].w=1; v[p+1].s=(s2); v[p+1].t=(t2);\
v[p+2].x=(x3); v[p+2].y=(y3); v[p+2].z=0; v[p+2].w=1; v[p+2].s=(s3); v[p+2].t=(t3);\
}
for (n = 0; num_traps; num_traps--) {
float lx1, ly1, lx2, ly2;
float rx1, ry1, rx2, ry2;
/* XXX: Do we need to validate the trapezoid? */
lx1 = traps->left.p1.x/65536.0;
ly1 = traps->left.p1.y/65536.0;
lx2 = traps->left.p2.x/65536.0;
ly2 = traps->left.p2.y/65536.0;
rx1 = traps->right.p1.x/65536.0;
ry1 = traps->right.p1.y/65536.0;
rx2 = traps->right.p2.x/65536.0;
ry2 = traps->right.p2.y/65536.0;
if (traps->left.p1.y < traps->top) {
float y = traps->top/65536.0;
if (lx2 != lx1)
lx1 = (y - ly1) * (lx2 - lx1) / (ly2 - ly1) + lx1;
ly1 = y;
}
if (traps->left.p2.y > traps->bottom) {
float y = traps->bottom/65536.0;
if (lx2 != lx1)
lx2 = (y - ly1) * (lx2 - lx1) / (ly2 - ly1) + lx1;
ly2 = y;
}
if (traps->right.p1.y < traps->top) {
float y = traps->top/65536.0;
if (rx2 != rx1)
rx1 = (y - ry1) * (rx2 - rx1) / (ry2 - ry1) + rx1;
ry1 = y;
}
if (traps->right.p2.y > traps->bottom) {
float y = traps->bottom/65536.0;
if (rx2 != rx1)
rx2 = (y - ry1) * (rx2 - rx1) / (ry2 - ry1) + rx1;
ry2 = y;
}
if (lx1 == rx1 && ly1 == ry1) {
ADD_TRI (0, lx2, ly2, 0, 0,
lx1, ly1, 0, 0,
rx2, ry2, 0, 0 );
v += 3;
n += 3;
}
else if (lx2 == rx2 && ly2 == ry2) {
ADD_TRI (0, lx1, ly1, 0, 0,
lx2, ly2, 0, 0,
rx1, ry1, 0, 0 );
v += 3;
n += 3;
}
else {
ADD_TRI (0, lx1, ly1, 0, 0,
rx1, ry1, 0, 0,
lx2, ly2, 0, 0);
ADD_TRI (1, lx2, ly2, 0, 0,
rx1, ry1, 0, 0,
rx2, ry2, 0, 0);
v += 6;
n += 6;
}
traps++;
}
#undef ADD_TRI
D_DEBUG_AT (CairoDFB_Render, "Running TextureTriangles().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->TextureTriangles (dst->dfbsurface, src->dfbsurface,
vertex, NULL, n, DTTF_LIST));
ret = CAIRO_STATUS_SUCCESS;
}
_directfb_finish_composite (dst, pattern, &src->base, &src_attr);
return ret;
}
#endif /* DFB_COMPOSITE_TRAPEZOIDS */
static cairo_int_status_t
_cairo_directfb_surface_set_clip_region (void *abstract_surface,
cairo_region_t *region)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Clip,
"%s( surface=%p, region=%p ).\n",
__FUNCTION__, surface, region);
if (region) {
cairo_box_int_t *boxes;
int n_boxes;
cairo_status_t status;
int i;
status = _cairo_region_get_boxes (region, &n_boxes, &boxes);
if (n_boxes == 0)
return CAIRO_STATUS_SUCCESS;
if (status)
return status;
if (surface->n_clips != n_boxes) {
if (surface->clips)
free (surface->clips);
surface->clips = _cairo_malloc_ab (n_boxes, sizeof(DFBRegion));
if (!surface->clips) {
surface->n_clips = 0;
_cairo_region_boxes_fini (region, boxes);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
surface->n_clips = n_boxes;
}
for (i = 0; i < n_boxes; i++) {
surface->clips[i].x1 = boxes[i].p1.x;
surface->clips[i].y1 = boxes[i].p1.y;
surface->clips[i].x2 = boxes[i].p2.x;
surface->clips[i].y2 = boxes[i].p2.y;
}
_cairo_region_boxes_fini (region, boxes);
}
else {
if (surface->clips) {
free (surface->clips);
surface->clips = NULL;
surface->n_clips = 0;
}
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_directfb_abstract_surface_get_extents (void *abstract_surface,
cairo_rectangle_int_t *rectangle)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Surface,
"%s( surface=%p, rectangle=%p ).\n",
__FUNCTION__, surface, rectangle);
if (rectangle) {
if (!surface->local) {
surface->dfbsurface->GetSize (surface->dfbsurface,
&surface->width, &surface->height);
}
rectangle->x = 0;
rectangle->y = 0;
rectangle->width = surface->width;
rectangle->height = surface->height;
}
return CAIRO_STATUS_SUCCESS;
}
#if DFB_SHOW_GLYPHS
static cairo_directfb_font_cache_t*
_directfb_allocate_font_cache (IDirectFB *dfb, int width, int height)
{
cairo_directfb_font_cache_t *cache;
cache = calloc (1, sizeof(cairo_directfb_font_cache_t));
if (!cache)
return NULL;
cache->dfb = dfb;
cache->dfbsurface = _directfb_buffer_surface_create (dfb,
_directfb_argb_font ? DSPF_ARGB : DSPF_A8, width, height);
if (!cache->dfbsurface) {
free (cache);
return NULL;
}
cache->width = width;
cache->height = height;
return cache;
}
static void
_directfb_destroy_font_cache (cairo_directfb_font_cache_t *cache)
{
cache->dfbsurface->Release (cache->dfbsurface);
free (cache);
}
static cairo_status_t
_directfb_acquire_font_cache (cairo_directfb_surface_t *surface,
cairo_scaled_font_t *scaled_font,
const cairo_glyph_t *glyphs,
int num_glyphs,
cairo_directfb_font_cache_t **ret_cache,
DFBRectangle *rects,
DFBPoint *points,
int *ret_num )
{
cairo_status_t ret;
cairo_scaled_glyph_t *chars[num_glyphs];
int num_chars = 0;
cairo_directfb_font_cache_t *cache = NULL;
int n = 0;
int x = 0;
int y = 0;
int w = 8;
int h = 8;
int i;
D_DEBUG_AT (CairoDFB_Font, "%s( %p [%d] )\n", __FUNCTION__, glyphs, num_glyphs );
if (scaled_font->surface_private) {
cache = scaled_font->surface_private;
x = cache->x;
y = cache->y;
}
_cairo_cache_freeze( scaled_font->glyphs );
for (i = 0; i < num_glyphs; i++) {
cairo_scaled_glyph_t *scaled_glyph;
cairo_image_surface_t *img;
D_DEBUG_AT (CairoDFB_Font, " -> [%2d] = %4lu\n", i, glyphs[i].index );
ret = _cairo_scaled_glyph_lookup (scaled_font, glyphs[i].index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (ret) {
_cairo_cache_thaw( scaled_font->glyphs );
return ret;
}
img = scaled_glyph->surface;
switch (img->format) {
case CAIRO_FORMAT_A1:
case CAIRO_FORMAT_A8:
case CAIRO_FORMAT_ARGB32:
break;
default:
D_DEBUG_AT (CairoDFB_Font,
" -> Unsupported font format %d!\n", img->format);
_cairo_cache_thaw( scaled_font->glyphs );
return CAIRO_INT_STATUS_UNSUPPORTED;
}
points[n].x = _cairo_lround (glyphs[i].x - img->base.device_transform.x0);
points[n].y = _cairo_lround (glyphs[i].y - img->base.device_transform.y0);
// D_DEBUG_AT (CairoDFB_Font, " (%4d,%4d) [%2d]\n", points[n].x, points[n].y, n );
if (points[n].x >= surface->width ||
points[n].y >= surface->height ||
points[n].x+img->width <= 0 ||
points[n].y+img->height <= 0)
{
D_DEBUG_AT (CairoDFB_Font,
" -> Unsupported font format %d!\n", img->format);
continue;
}
if (!scaled_glyph->surface_private) {
DFBRectangle *rect;
if (x+img->width > 2048) {
x = 0;
y = h;
h = 0;
}
rects[n].x = x;
rects[n].y = y;
rects[n].w = img->width;
rects[n].h = img->height;
x += img->width;
h = MAX (h, img->height);
w = MAX (w, x);
/* Remember glyph location */
rect = malloc (sizeof(DFBRectangle));
if (!rect) {
_cairo_cache_thaw( scaled_font->glyphs );
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
*rect = rects[n];
scaled_glyph->surface_private = rect;
chars[num_chars++] = scaled_glyph;
D_DEBUG_AT (CairoDFB_Font, " -> loading at %4d,%2d <- rect %p, img %p, entry %p\n",
rects[n].x, rects[n].y, rect, scaled_glyph->surface, scaled_glyph);
}
else {
rects[n] = *((DFBRectangle *)scaled_glyph->surface_private);
D_DEBUG_AT (CairoDFB_Font, " -> exists at %4d,%2d\n", rects[n].x, rects[n].y);
}
n++;
}
if (!n) {
_cairo_cache_thaw( scaled_font->glyphs );
return CAIRO_INT_STATUS_NOTHING_TO_DO;
}
h += y;
w = MAX (w, 8);
h = MAX (h, 8);
if (cache) {
if (cache->width < w || cache->height < h) {
cairo_directfb_font_cache_t *new_cache;
w = MAX (w, cache->width);
h = MAX (h, cache->height);
D_DEBUG_AT (CairoDFB_Font, " -> Reallocating font cache (%dx%d).\n", w, h);
new_cache = _directfb_allocate_font_cache (surface->dfb, w, h);
if (!new_cache) {
_cairo_cache_thaw( scaled_font->glyphs );
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
new_cache->dfbsurface->Blit (new_cache->dfbsurface,
cache->dfbsurface, NULL, 0, 0);
_directfb_destroy_font_cache (cache);
scaled_font->surface_private = cache = new_cache;
}
}
else {
D_DEBUG_AT (CairoDFB_Font, " -> Allocating font cache (%dx%d).\n", w, h);
cache = _directfb_allocate_font_cache (surface->dfb, w, h);
if (!cache) {
_cairo_cache_thaw( scaled_font->glyphs );
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
scaled_font->surface_backend = &cairo_directfb_surface_backend;
scaled_font->surface_private = cache;
}
if (num_chars) {
unsigned char *data;
int pitch;
if (cache->dfbsurface->Lock (cache->dfbsurface,
DSLF_WRITE, (void *)&data, &pitch))
{
_cairo_cache_thaw( scaled_font->glyphs );
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
D_DEBUG_AT (CairoDFB_Font, " => %d chars to load, cache %dx%d\n", num_chars, cache->width, cache->height);
for (i = 0; i < num_chars; i++) {
cairo_image_surface_t *img = chars[i]->surface;
DFBRectangle *rect = chars[i]->surface_private;
unsigned char *dst = data;
unsigned char *src;
int j;
D_DEBUG_AT (CairoDFB_Font, " -> loading [%2d] <- rect %p, img %p, entry %p\n", i, rect, img, chars[i]);
src = img->data;
D_DEBUG_AT (CairoDFB_Font, " from %p\n", src);
dst += rect->y * pitch + (_directfb_argb_font ? (rect->x<<2) : rect->x);
D_DEBUG_AT (CairoDFB_Font, " to %4d,%2d (%p)\n", rect->x, rect->y, dst);
if (img->format == CAIRO_FORMAT_A1) {
for (h = rect->h; h; h--) {
if (_directfb_argb_font) {
for (j = 0; j < rect->w; j++)
((uint32_t *)dst)[j] = (src[j>>3] & (1 << (j&7))) ? 0xffffffff : 0;
}
else {
for (j = 0; j < rect->w; j++)
dst[j] = (src[j>>3] & (1 << (j&7))) ? 0xff : 0;
}
dst += pitch;
src += img->stride;
}
}
else if (img->format == CAIRO_FORMAT_A8) {
for (h = rect->h; h; h--) {
if (_directfb_argb_font) {
for (j = 0; j < rect->w; j++)
((uint32_t *)dst)[j] = src[j] * 0x01010101;
}
else {
direct_memcpy (dst, src, rect->w);
}
dst += pitch;
src += img->stride;
}
}
else { /* ARGB32 */
for (h = rect->h; h; h--) {
if (_directfb_argb_font) {
direct_memcpy (dst, src, rect->w<<2);
}
else {
for (j = 0; j < rect->w; j++)
dst[j] = ((uint32_t *)src)[j] >> 24;
}
dst += pitch;
src += img->stride;
}
}
}
cache->dfbsurface->Unlock (cache->dfbsurface);
}
_cairo_cache_thaw( scaled_font->glyphs );
cache->x = x;
cache->y = y;
D_DEBUG_AT (CairoDFB_Font, " => cache %d,%d, %p [%d]\n", x, y, cache, n);
*ret_cache = cache;
*ret_num = n;
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_directfb_surface_scaled_font_fini (cairo_scaled_font_t *scaled_font)
{
cairo_directfb_font_cache_t *cache = scaled_font->surface_private;
D_DEBUG_AT (CairoDFB_Font,
"%s( scaled_font=%p ).\n", __FUNCTION__, scaled_font);
if (cache) {
_directfb_destroy_font_cache (cache);
scaled_font->surface_private = NULL;
}
}
static void
_cairo_directfb_surface_scaled_glyph_fini (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font)
{
D_DEBUG_AT (CairoDFB_Font,
"%s( scaled_glyph=%p, scaled_font=%p ).\n",
__FUNCTION__, scaled_glyph, scaled_font);
if (scaled_glyph->surface_private) {
free (scaled_glyph->surface_private);
scaled_glyph->surface_private = NULL;
}
}
static cairo_int_status_t
_cairo_directfb_surface_show_glyphs (void *abstract_dst,
cairo_operator_t op,
cairo_pattern_t *pattern,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
int *remaining_glyphs)
{
cairo_directfb_surface_t *dst = abstract_dst;
cairo_directfb_font_cache_t *cache;
cairo_status_t ret;
DFBSurfaceBlittingFlags flags;
DFBSurfaceBlendFunction sblend;
DFBSurfaceBlendFunction dblend;
DFBColor color;
DFBRectangle rects[num_glyphs];
DFBPoint points[num_glyphs];
int num;
D_DEBUG_AT (CairoDFB_Font,
"%s( dst=%p, op=%d, pattern=%p, glyphs=%p, num_glyphs=%d, scaled_font=%p ).\n",
__FUNCTION__, dst, op, pattern, glyphs, num_glyphs, scaled_font);
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (_directfb_get_operator (op, &sblend, &dblend) ||
sblend == DSBF_DESTALPHA || sblend == DSBF_INVDESTALPHA)
return CAIRO_INT_STATUS_UNSUPPORTED;
ret = _directfb_acquire_font_cache (dst, scaled_font, glyphs, num_glyphs,
&cache, &rects[0], &points[0], &num);
if (ret) {
if (ret == CAIRO_INT_STATUS_NOTHING_TO_DO)
ret = CAIRO_STATUS_SUCCESS;
return ret;
}
color.a = ((cairo_solid_pattern_t *)pattern)->color.alpha_short >> 8;
color.r = ((cairo_solid_pattern_t *)pattern)->color.red_short >> 8;
color.g = ((cairo_solid_pattern_t *)pattern)->color.green_short >> 8;
color.b = ((cairo_solid_pattern_t *)pattern)->color.blue_short >> 8;
flags = DSBLIT_BLEND_ALPHACHANNEL | DSBLIT_COLORIZE;
if (color.a != 0xff)
flags |= DSBLIT_BLEND_COLORALPHA;
if (!_directfb_argb_font) {
if (sblend == DSBF_ONE) {
sblend = DSBF_SRCALPHA;
if (dblend == DSBF_ZERO)
dblend = DSBF_INVSRCALPHA;
}
}
dst->dfbsurface->SetBlittingFlags (dst->dfbsurface, flags);
dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
dst->dfbsurface->SetColor (dst->dfbsurface, color.r, color.g, color.b, color.a);
D_DEBUG_AT (CairoDFB_Font, "Running BatchBlit().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->BatchBlit (dst->dfbsurface,
cache->dfbsurface, rects, points, num));
return CAIRO_STATUS_SUCCESS;
}
#endif /* DFB_SHOW_GLYPHS */
static cairo_bool_t
_cairo_directfb_surface_is_similar (void *surface_a, void *surface_b, cairo_content_t content)
{
cairo_directfb_surface_t *a = (cairo_directfb_surface_t *) surface_a;
cairo_directfb_surface_t *b = (cairo_directfb_surface_t *) surface_b;
return a->dfb == b->dfb;
}
static cairo_surface_backend_t cairo_directfb_surface_backend = {
CAIRO_SURFACE_TYPE_DIRECTFB, /*type*/
_cairo_directfb_surface_create_similar,/*create_similar*/
_cairo_directfb_surface_finish, /*finish*/
_cairo_directfb_surface_acquire_source_image,/*acquire_source_image*/
_cairo_directfb_surface_release_source_image,/*release_source_image*/
_cairo_directfb_surface_acquire_dest_image,/*acquire_dest_image*/
_cairo_directfb_surface_release_dest_image,/*release_dest_image*/
_cairo_directfb_surface_clone_similar,/*clone_similar*/
#if DFB_COMPOSITE
_cairo_directfb_surface_composite,/*composite*/
#else
NULL,/*composite*/
#endif
#if DFB_RECTANGLES
_cairo_directfb_surface_fill_rectangles,/*fill_rectangles*/
#else
NULL,/*fill_rectangles*/
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
_cairo_directfb_surface_composite_trapezoids,/*composite_trapezoids*/
#else
NULL,/*composite_trapezoids*/
#endif
NULL, /* copy_page */
NULL, /* show_page */
_cairo_directfb_surface_set_clip_region,/* set_clip_region */
NULL, /* intersect_clip_path */
_cairo_directfb_abstract_surface_get_extents,/* get_extents */
NULL, /* old_show_glyphs */
NULL, /* get_font_options */
NULL, /* flush */
NULL, /* mark_dirty_rectangle */
#if DFB_SHOW_GLYPHS
_cairo_directfb_surface_scaled_font_fini,/* scaled_font_fini */
_cairo_directfb_surface_scaled_glyph_fini,/* scaled_glyph_fini */
#else
NULL,
NULL,
#endif
NULL, /* paint */
NULL, /* mask */
NULL, /* stroke */
NULL, /* fill */
#if DFB_SHOW_GLYPHS
_cairo_directfb_surface_show_glyphs,/* show_glyphs */
#else
NULL, /* show_glyphs */
#endif
NULL, /* snapshot */
_cairo_directfb_surface_is_similar,
NULL /* reset */
};
static void
cairo_directfb_surface_backend_init (IDirectFB *dfb)
{
static int done = 0;
if (done)
return;
if (getenv ("CAIRO_DIRECTFB_NO_ACCEL")) {
#if DFB_RECTANGLES
cairo_directfb_surface_backend.fill_rectangles = NULL;
#endif
#if DFB_COMPOSITE
cairo_directfb_surface_backend.composite = NULL;
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
cairo_directfb_surface_backend.composite_trapezoids = NULL;
#endif
#if DFB_SHOW_GLYPHS
cairo_directfb_surface_backend.scaled_font_fini = NULL;
cairo_directfb_surface_backend.scaled_glyph_fini = NULL;
cairo_directfb_surface_backend.show_glyphs = NULL;
#endif
D_DEBUG_AT (CairoDFB_Surface, "Acceleration disabled.\n");
}
else {
DFBGraphicsDeviceDescription dsc;
dfb->GetDeviceDescription (dfb, &dsc);
#if DFB_COMPOSITE
// if (!(dsc.acceleration_mask & DFXL_BLIT))
// cairo_directfb_surface_backend.composite = NULL;
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
// if (!(dsc.acceleration_mask & DFXL_TEXTRIANGLES))
// cairo_directfb_surface_backend.composite_trapezoids = NULL;
#endif
}
if (getenv ("CAIRO_DIRECTFB_ARGB_FONT")) {
_directfb_argb_font = 1;
D_DEBUG_AT (CairoDFB_Surface, "Using ARGB fonts.\n");
}
done = 1;
}
cairo_surface_t *
cairo_directfb_surface_create (IDirectFB *dfb, IDirectFBSurface *dfbsurface)
{
cairo_directfb_surface_t *surface;
DFBSurfacePixelFormat format;
D_ASSERT (dfb != NULL);
D_ASSERT (dfbsurface != NULL);
cairo_directfb_surface_backend_init (dfb);
surface = calloc (1, sizeof(cairo_directfb_surface_t));
if (!surface)
return NULL;
dfbsurface->AddRef (dfbsurface);
dfbsurface->GetPixelFormat (dfbsurface, &format);
dfbsurface->GetSize (dfbsurface, &surface->width, &surface->height);
surface->dfb = dfb;
surface->dfbsurface = dfbsurface;
surface->format = _directfb_to_cairo_format (format);
surface->content = _directfb_format_to_content (format);
_cairo_surface_init (&surface->base,
&cairo_directfb_surface_backend, surface->content);
return &surface->base;
}
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