mirror of
https://github.com/brl/mutter.git
synced 2024-11-22 08:00:42 -05:00
36c85da3b8
This remove cogl-internal.h in favour of using cogl-private.h. Some things in cogl-internal.h were moved to driver/gl/cogl-util-gl-private.h and the _cogl_gl_error_to_string function whose prototype was moved from cogl-internal.h to cogl-util-gl-private.h has had its implementation moved from cogl.c to cogl-util-gl.c Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 01cc82ece091aa3bec4c07fdd6bc9e5135fca573)
456 lines
12 KiB
C
456 lines
12 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009 Intel Corporation.
|
|
*
|
|
* 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 details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl-util.h"
|
|
#include "cogl-bitmap-private.h"
|
|
#include "cogl-context-private.h"
|
|
#include "cogl-private.h"
|
|
#include "cogl-error-private.h"
|
|
|
|
#include <string.h>
|
|
|
|
#ifdef USE_QUARTZ
|
|
#include <ApplicationServices/ApplicationServices.h>
|
|
#elif defined(USE_GDKPIXBUF)
|
|
#include <gdk-pixbuf/gdk-pixbuf.h>
|
|
#endif
|
|
|
|
#ifdef USE_QUARTZ
|
|
|
|
CoglBool
|
|
_cogl_bitmap_get_size_from_file (const char *filename,
|
|
int *width,
|
|
int *height)
|
|
{
|
|
if (width)
|
|
*width = 0;
|
|
|
|
if (height)
|
|
*height = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* the error does not contain the filename as the caller already has it */
|
|
CoglBitmap *
|
|
_cogl_bitmap_from_file (CoglContext *ctx,
|
|
const char *filename,
|
|
CoglError **error)
|
|
{
|
|
CFURLRef url;
|
|
CGImageSourceRef image_source;
|
|
CGImageRef image;
|
|
int save_errno;
|
|
CFStringRef type;
|
|
size_t width, height, rowstride;
|
|
uint8_t *out_data;
|
|
CGColorSpaceRef color_space;
|
|
CGContextRef bitmap_context;
|
|
CoglBitmap *bmp;
|
|
|
|
url = CFURLCreateFromFileSystemRepresentation (NULL,
|
|
(guchar *) filename,
|
|
strlen (filename),
|
|
false);
|
|
image_source = CGImageSourceCreateWithURL (url, NULL);
|
|
save_errno = errno;
|
|
CFRelease (url);
|
|
|
|
if (image_source == NULL)
|
|
{
|
|
/* doesn't exist, not readable, etc. */
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_FAILED,
|
|
g_strerror (save_errno));
|
|
return NULL;
|
|
}
|
|
|
|
/* Unknown images would be cleanly caught as zero width/height below, but try
|
|
* to provide better error message
|
|
*/
|
|
type = CGImageSourceGetType (image_source);
|
|
if (type == NULL)
|
|
{
|
|
CFRelease (image_source);
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_UNKNOWN_TYPE,
|
|
"Unknown image type");
|
|
return NULL;
|
|
}
|
|
|
|
CFRelease (type);
|
|
|
|
image = CGImageSourceCreateImageAtIndex (image_source, 0, NULL);
|
|
CFRelease (image_source);
|
|
|
|
width = CGImageGetWidth (image);
|
|
height = CGImageGetHeight (image);
|
|
if (width == 0 || height == 0)
|
|
{
|
|
/* incomplete or corrupt */
|
|
CFRelease (image);
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_CORRUPT_IMAGE,
|
|
"Image has zero width or height");
|
|
return NULL;
|
|
}
|
|
|
|
/* allocate buffer big enough to hold pixel data */
|
|
bmp = _cogl_bitmap_new_with_malloc_buffer (ctx,
|
|
width, height,
|
|
COGL_PIXEL_FORMAT_ARGB_8888);
|
|
rowstride = cogl_bitmap_get_rowstride (bmp);
|
|
out_data = _cogl_bitmap_map (bmp,
|
|
COGL_BUFFER_ACCESS_WRITE,
|
|
COGL_BUFFER_MAP_HINT_DISCARD);
|
|
|
|
/* render to buffer */
|
|
color_space = CGColorSpaceCreateWithName (kCGColorSpaceGenericRGB);
|
|
bitmap_context = CGBitmapContextCreate (out_data,
|
|
width, height, 8,
|
|
rowstride, color_space,
|
|
kCGImageAlphaPremultipliedFirst);
|
|
CGColorSpaceRelease (color_space);
|
|
|
|
CGContextSetBlendMode (bitmap_context, kCGBlendModeCopy);
|
|
|
|
{
|
|
const CGRect rect = {{0, 0}, {width, height}};
|
|
|
|
CGContextDrawImage (bitmap_context, rect, image);
|
|
}
|
|
|
|
CGImageRelease (image);
|
|
CGContextRelease (bitmap_context);
|
|
|
|
_cogl_bitmap_unmap (bmp);
|
|
|
|
/* store bitmap info */
|
|
return bmp;
|
|
}
|
|
|
|
#elif defined(USE_GDKPIXBUF)
|
|
|
|
CoglBool
|
|
_cogl_bitmap_get_size_from_file (const char *filename,
|
|
int *width,
|
|
int *height)
|
|
{
|
|
_COGL_RETURN_VAL_IF_FAIL (filename != NULL, FALSE);
|
|
|
|
if (gdk_pixbuf_get_file_info (filename, width, height) != NULL)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
CoglBitmap *
|
|
_cogl_bitmap_from_file (CoglContext *ctx,
|
|
const char *filename,
|
|
CoglError **error)
|
|
{
|
|
static CoglUserDataKey pixbuf_key;
|
|
GdkPixbuf *pixbuf;
|
|
CoglBool has_alpha;
|
|
GdkColorspace color_space;
|
|
CoglPixelFormat pixel_format;
|
|
int width;
|
|
int height;
|
|
int rowstride;
|
|
int bits_per_sample;
|
|
int n_channels;
|
|
CoglBitmap *bmp;
|
|
GError *glib_error = NULL;
|
|
|
|
/* Load from file using GdkPixbuf */
|
|
pixbuf = gdk_pixbuf_new_from_file (filename, &glib_error);
|
|
if (pixbuf == NULL)
|
|
{
|
|
_cogl_propagate_gerror (error, glib_error);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Get pixbuf properties */
|
|
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
|
|
color_space = gdk_pixbuf_get_colorspace (pixbuf);
|
|
width = gdk_pixbuf_get_width (pixbuf);
|
|
height = gdk_pixbuf_get_height (pixbuf);
|
|
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
|
|
bits_per_sample = gdk_pixbuf_get_bits_per_sample (pixbuf);
|
|
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
|
|
|
|
/* According to current docs this should be true and so
|
|
* the translation to cogl pixel format below valid */
|
|
g_assert (bits_per_sample == 8);
|
|
|
|
if (has_alpha)
|
|
g_assert (n_channels == 4);
|
|
else
|
|
g_assert (n_channels == 3);
|
|
|
|
/* Translate to cogl pixel format */
|
|
switch (color_space)
|
|
{
|
|
case GDK_COLORSPACE_RGB:
|
|
/* The only format supported by GdkPixbuf so far */
|
|
pixel_format = has_alpha ?
|
|
COGL_PIXEL_FORMAT_RGBA_8888 :
|
|
COGL_PIXEL_FORMAT_RGB_888;
|
|
break;
|
|
|
|
default:
|
|
/* Ouch, spec changed! */
|
|
g_object_unref (pixbuf);
|
|
return FALSE;
|
|
}
|
|
|
|
/* We just use the data directly from the pixbuf so that we don't
|
|
have to copy to a seperate buffer. Note that Cogl is expected not
|
|
to read past the end of bpp*width on the last row even if the
|
|
rowstride is much larger so we don't need to worry about
|
|
GdkPixbuf's semantics that it may under-allocate the buffer. */
|
|
bmp = cogl_bitmap_new_for_data (ctx,
|
|
width,
|
|
height,
|
|
pixel_format,
|
|
rowstride,
|
|
gdk_pixbuf_get_pixels (pixbuf));
|
|
|
|
cogl_object_set_user_data (COGL_OBJECT (bmp),
|
|
&pixbuf_key,
|
|
pixbuf,
|
|
g_object_unref);
|
|
|
|
return bmp;
|
|
}
|
|
|
|
#else
|
|
|
|
#include "stb_image.c"
|
|
|
|
CoglBool
|
|
_cogl_bitmap_get_size_from_file (const char *filename,
|
|
int *width,
|
|
int *height)
|
|
{
|
|
if (width)
|
|
*width = 0;
|
|
|
|
if (height)
|
|
*height = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* stb_image.c supports an STBI_grey_alpha format which we don't have
|
|
* a corresponding CoglPixelFormat for so as a special case we
|
|
* convert this to rgba8888.
|
|
*
|
|
* If we have a use case where this is an important format to consider
|
|
* then it could be worth adding a corresponding CoglPixelFormat
|
|
* instead.
|
|
*/
|
|
static uint8_t *
|
|
convert_ra_88_to_rgba_8888 (uint8_t *pixels,
|
|
int width,
|
|
int height)
|
|
{
|
|
int x, y;
|
|
uint8_t *buf;
|
|
size_t in_stride = width * 2;
|
|
size_t out_stride = width * 4;
|
|
|
|
buf = malloc (width * height * 4);
|
|
if (buf)
|
|
return NULL;
|
|
|
|
for (y = 0; y < height; y++)
|
|
for (x = 0; x < width; x++)
|
|
{
|
|
uint8_t *src = pixels + in_stride * y + 2 * x;
|
|
uint8_t *dst = buf + out_stride * y + 4 * x;
|
|
|
|
dst[0] = src[0];
|
|
dst[1] = src[0];
|
|
dst[2] = src[0];
|
|
dst[3] = src[1];
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
static CoglBitmap *
|
|
_cogl_bitmap_new_from_stb_pixels (CoglContext *ctx,
|
|
uint8_t *pixels,
|
|
int stb_pixel_format,
|
|
int width,
|
|
int height,
|
|
CoglError **error)
|
|
{
|
|
static CoglUserDataKey bitmap_data_key;
|
|
CoglBitmap *bmp;
|
|
CoglPixelFormat cogl_format;
|
|
size_t stride;
|
|
|
|
if (pixels == NULL)
|
|
{
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_FAILED,
|
|
"Failed to load image with stb image library");
|
|
return NULL;
|
|
}
|
|
|
|
switch (stb_pixel_format)
|
|
{
|
|
case STBI_grey:
|
|
cogl_format = COGL_PIXEL_FORMAT_A_8;
|
|
break;
|
|
case STBI_grey_alpha:
|
|
{
|
|
uint8_t *tmp = pixels;
|
|
|
|
pixels = convert_ra_88_to_rgba_8888 (pixels, width, height);
|
|
free (tmp);
|
|
|
|
if (!pixels)
|
|
{
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_FAILED,
|
|
"Failed to alloc memory to convert "
|
|
"gray_alpha to rgba8888");
|
|
return NULL;
|
|
}
|
|
|
|
cogl_format = COGL_PIXEL_FORMAT_RGBA_8888;
|
|
break;
|
|
}
|
|
case STBI_rgb:
|
|
cogl_format = COGL_PIXEL_FORMAT_RGB_888;
|
|
break;
|
|
case STBI_rgb_alpha:
|
|
cogl_format = COGL_PIXEL_FORMAT_RGBA_8888;
|
|
break;
|
|
|
|
default:
|
|
g_warn_if_reached ();
|
|
return NULL;
|
|
}
|
|
|
|
stride = width * _cogl_pixel_format_get_bytes_per_pixel (cogl_format);
|
|
|
|
/* Store bitmap info */
|
|
bmp = cogl_bitmap_new_for_data (ctx,
|
|
width, height,
|
|
cogl_format,
|
|
stride,
|
|
pixels);
|
|
|
|
/* Register a destroy function so the pixel data will be freed
|
|
automatically when the bitmap object is destroyed */
|
|
cogl_object_set_user_data (COGL_OBJECT (bmp), &bitmap_data_key, pixels, free);
|
|
|
|
return bmp;
|
|
}
|
|
|
|
CoglBitmap *
|
|
_cogl_bitmap_from_file (CoglContext *ctx,
|
|
const char *filename,
|
|
CoglError **error)
|
|
{
|
|
int stb_pixel_format;
|
|
int width;
|
|
int height;
|
|
uint8_t *pixels;
|
|
|
|
pixels = stbi_load (filename,
|
|
&width, &height, &stb_pixel_format,
|
|
STBI_default);
|
|
|
|
return _cogl_bitmap_new_from_stb_pixels (ctx, pixels, stb_pixel_format,
|
|
width, height,
|
|
error);
|
|
}
|
|
|
|
#ifdef COGL_HAS_ANDROID_SUPPORT
|
|
CoglBitmap *
|
|
_cogl_android_bitmap_new_from_asset (CoglContext *ctx,
|
|
AAssetManager *manager,
|
|
const char *filename,
|
|
CoglError **error)
|
|
{
|
|
AAsset *asset;
|
|
const void *data;
|
|
off_t len;
|
|
int stb_pixel_format;
|
|
int width;
|
|
int height;
|
|
uint8_t *pixels;
|
|
CoglBitmap *bmp;
|
|
|
|
asset = AAssetManager_open (manager, filename, AASSET_MODE_BUFFER);
|
|
if (!asset)
|
|
{
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_FAILED,
|
|
"Failed to open asset");
|
|
return NULL;
|
|
}
|
|
|
|
data = AAsset_getBuffer (asset);
|
|
if (!data)
|
|
{
|
|
_cogl_set_error_literal (error,
|
|
COGL_BITMAP_ERROR,
|
|
COGL_BITMAP_ERROR_FAILED,
|
|
"Failed to ::getBuffer from asset");
|
|
return NULL;
|
|
}
|
|
|
|
len = AAsset_getLength (asset);
|
|
|
|
pixels = stbi_load_from_memory (data, len,
|
|
&width, &height,
|
|
&stb_pixel_format, STBI_default);
|
|
|
|
bmp = _cogl_bitmap_new_from_stb_pixels (ctx, pixels, stb_pixel_format,
|
|
width, height,
|
|
error);
|
|
|
|
AAsset_close (asset);
|
|
|
|
return bmp;
|
|
}
|
|
#endif
|
|
|
|
#endif
|