static void
draw_ripple(struct state *st, short *src)
{
int across, down;
char *dirty = st->dirty_buffer;
for (down = 0; down < st->height - 1; down++, src += 1, dirty += 1)
for (across = 0; across < st->width - 1; across++, src++, dirty++) {
int v1, v2, v3, v4;
v1 = (int)*src;
v2 = (int)*(src + 1);
v3 = (int)*(src + st->width);
v4 = (int)*(src + st->width + 1);
if ((v1 == 0 && v2 == 0 && v3 == 0 && v4 == 0)) {
if (*dirty > 0)
(*dirty)--;
} else
*dirty = DIRTY;
if (*dirty > 0) {
int dx;
if (st->light > 0) {
dx = ((v3 - v1) + (v4 - v2)) << st->light; /* light from top */
} else
dx = 0;
XPutPixel(st->buffer_map,(across<<1), (down<<1), map_color(st, dx + v1));
XPutPixel(st->buffer_map,(across<<1)+1,(down<<1), map_color(st, dx + ((v1 + v2) >> 1)));
XPutPixel(st->buffer_map,(across<<1), (down<<1)+1,map_color(st, dx + ((v1 + v3) >> 1)));
XPutPixel(st->buffer_map,(across<<1)+1,(down<<1)+1,map_color(st, dx + ((v1 + v4) >> 1)));
}
}
/*-----------------------------------------------------------------------------------*/
void
bgcolor(unsigned char c)
{
c = map_color(c);
color = ((c << 4) | (color & 0xF0));
/* Presume this to be one of the first calls. */
console_init();
}
void Graph::showPath(MapPoint goal_position)
{
std::list<MapPoint> finalPath;
std::list<MapPoint>::iterator listIt;
// Get goal node
Node* node = nodes_list_[goal_position.label];
// Cycle through all available nodes starting from the goal to the start
//node
while(1)
{
finalPath.push_front(node->map_position_);
// get this node parent
node = node->parent_;
// if this new node is our start position, i.e., it is our root, we're
//done
if( node == root_ )
break;
}
// Map to show path
cv::Mat map_color(map_.size().height, map_.size().width, CV_8UC3);
cvtColor(map_, map_color, CV_GRAY2RGB);
// Now go through the list and print all positions
std::cout << "This is the path from "
<< root_->map_position_.label << " to "
<< goal_position.label << ":\n";
std::cout << root_->map_position_.label;
// Show them in the map to.
map_color.at<cv::Vec3b>(root_->map_position_.row,
root_->map_position_.column) = cv::Vec3b(0,0,255);
for( listIt = finalPath.begin(); listIt != finalPath.end(); listIt++)
{
std::cout << " --> " << listIt->label;
map_color.at<cv::Vec3b>(listIt->row,listIt->column) = cv::Vec3b(0,0,255);
}
std::cout << std::endl;
cv::imshow("Map", map_color);
cv::imwrite("Map_solution.png", map_color);
}
grub_err_t
grub_video_bitmap_create_scaled (struct grub_video_bitmap **dst,
int dst_width, int dst_height,
struct grub_video_bitmap *src,
int scale, grub_video_color_t color)
{
int type, method;
int src_width, src_height, width, height;
struct grub_video_fbblit_info dst_info;
struct grub_video_bitmap *tmp = 0;
grub_err_t ret;
*dst = 0;
/* Verify the simplifying assumptions. */
if (src == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"null src bitmap in grub_video_bitmap_create_scaled");
if (src->mode_info.red_field_pos % 8 != 0
|| src->mode_info.green_field_pos % 8 != 0
|| src->mode_info.blue_field_pos % 8 != 0
|| src->mode_info.reserved_field_pos % 8 != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"src format not supported for scale");
if (src->mode_info.width == 0 || src->mode_info.height == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"source bitmap has a zero dimension");
if (dst_width <= 0 || dst_height <= 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"requested to scale to a size w/ a zero dimension");
if (src->mode_info.bytes_per_pixel * 8 != src->mode_info.bpp)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"bitmap to scale has inconsistent Bpp and bpp");
type = scale & GRUB_VIDEO_BITMAP_SCALE_TYPE_MASK;
method = scale & GRUB_VIDEO_BITMAP_SCALE_METHOD_MASK;
src_width = src->mode_info.width;
src_height = src->mode_info.height;
if ((src_width == dst_width) && (src_height == dst_height))
type = GRUB_VIDEO_BITMAP_SCALE_TYPE_CENTER;
if ((type == GRUB_VIDEO_BITMAP_SCALE_TYPE_NORMAL) ||
(((type == GRUB_VIDEO_BITMAP_SCALE_TYPE_MINFIT) ||
(type == GRUB_VIDEO_BITMAP_SCALE_TYPE_MAXFIT)) &&
(src_width * dst_height == src_height * dst_width)))
return grub_video_bitmap_create_scaled_internal (dst, dst_width,
dst_height, src, method);
ret = grub_video_bitmap_create (dst, dst_width, dst_height,
src->mode_info.blit_format);
if (ret != GRUB_ERR_NONE)
return ret; /* Error. */
(*dst)->transparent = src->transparent;
dst_info.mode_info = &(*dst)->mode_info;
dst_info.data = (*dst)->data;
color = map_color (dst_info.mode_info, color);
switch (type)
{
case GRUB_VIDEO_BITMAP_SCALE_TYPE_MINFIT:
case GRUB_VIDEO_BITMAP_SCALE_TYPE_MAXFIT:
{
if ((src_width * dst_height > src_height * dst_width) ==
(type == GRUB_VIDEO_BITMAP_SCALE_TYPE_MAXFIT))
{
width = src_width * dst_height / src_height;
height = dst_height;
}
else
{
width = dst_width;
height = src_height * dst_width / src_width;
}
ret = grub_video_bitmap_create_scaled_internal (&tmp, width, height,
src, method);
if (ret)
return ret;
src = tmp;
src_width = width;
src_height = height;
}
case GRUB_VIDEO_BITMAP_SCALE_TYPE_CENTER:
{
int src_x, src_y, dst_x, dst_y;
struct grub_video_fbblit_info src_info;
width = (src_width > dst_width) ? dst_width : src_width;
height = (src_height > dst_height) ? dst_height : src_height;
src_x = (src_width - width) >> 1;
src_y = (src_height - height) >> 1;
dst_x = (dst_width - width) >> 1;
dst_y = (dst_height - height) >> 1;
if (dst_y)
{
grub_video_fbfill (&dst_info, color, 0, 0, dst_width, dst_y);
grub_video_fbfill (&dst_info, color, 0, dst_y + height,
dst_width, dst_height - dst_y - height);
}
if (dst_x)
{
grub_video_fbfill (&dst_info, color, 0, dst_y, dst_x, height);
grub_video_fbfill (&dst_info, color, dst_x + width, dst_y,
dst_width - dst_x - width, height);
}
src_info.mode_info = &src->mode_info;
src_info.data = src->data;
grub_video_fbblit (&dst_info, &src_info, GRUB_VIDEO_BLIT_REPLACE,
dst_x, dst_y, width, height, src_x, src_y);
break;
}
case GRUB_VIDEO_BITMAP_SCALE_TYPE_TILING:
{
int x, y;
struct grub_video_fbblit_info src_info;
src_info.mode_info = &src->mode_info;
src_info.data = src->data;
for (y = 0; y < dst_height; y += src_height)
{
for (x = 0; x < dst_width; x += src_width)
{
int w, h;
w = src_width;
if (x + w > dst_width)
w = dst_width - x;
h = src_height;
if (y + h > dst_height)
h = dst_height - y;
grub_video_fbblit (&dst_info, &src_info,
GRUB_VIDEO_BLIT_REPLACE,
x, y, w, h, 0, 0);
}
}
break;
}
default:
return grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid scale type value");
}
if (tmp)
grub_video_bitmap_destroy (tmp);
return 0;
}
static fz_pixmap *
pam_binary_read_image(fz_context *ctx, struct info *pnm, unsigned char *p, unsigned char *e, int onlymeta)
{
fz_pixmap *img = NULL;
int bitmap = 0;
p = pam_binary_read_header(ctx, pnm, p, e);
if (pnm->tupletype == NULL)
switch (pnm->depth)
{
case 1: pnm->tupletype = fz_strdup(ctx, "BLACKANDWHITE"); break;
case 2: pnm->tupletype = fz_strdup(ctx, "GRAYSCALE_ALPHA"); break;
case 3: pnm->tupletype = fz_strdup(ctx, "RGB"); break;
case 4: pnm->tupletype = fz_strdup(ctx, "CMYK"); break;
case 5: pnm->tupletype = fz_strdup(ctx, "CMYK_ALPHA"); break;
default:
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot guess tupletype based on depth in pnm image");
}
if (!strcmp(pnm->tupletype, "BLACKANDWHITE"))
{
if (pnm->depth != 1)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for b/w pnm image");
if (pnm->maxval == 1)
bitmap = 1;
else if (pnm->maxval < 2 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for grayscale pnm image");
pnm->cs = fz_device_gray(ctx);
}
else if (!strcmp(pnm->tupletype, "GRAYSCALE"))
{
if (pnm->maxval < 2 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for grayscale pnm image");
if (pnm->depth != 1)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for grayscale pnm image");
pnm->cs = fz_device_gray(ctx);
}
else if (!strcmp(pnm->tupletype, "GRAYSCALE_ALPHA"))
{
if (pnm->maxval < 2 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for grayscale pnm image with alpha");
if (pnm->depth != 2)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for grayscale pnm image with alpha");
pnm->cs = fz_device_gray(ctx);
pnm->alpha = 1;
}
else if (!strcmp(pnm->tupletype, "RGB"))
{
if (pnm->maxval < 1 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for rgb pnm image");
if (pnm->depth != 3)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for rgb pnm image");
pnm->cs = fz_device_rgb(ctx);
}
else if (!strcmp(pnm->tupletype, "RGB_ALPHA"))
{
if (pnm->maxval < 1 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for rgb pnm image with alpha");
if (pnm->depth != 4)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for rgb pnm image with alpha");
pnm->cs = fz_device_rgb(ctx);
pnm->alpha = 1;
}
else if (!strcmp(pnm->tupletype, "CMYK"))
{
if (pnm->maxval < 1 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for cmyk pnm image");
if (pnm->depth != 4)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for cmyk pnm image");
pnm->cs = fz_device_cmyk(ctx);
}
else if (!strcmp(pnm->tupletype, "CMYK_ALPHA"))
{
if (pnm->maxval < 1 || pnm->maxval > 65535)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range for cmyk pnm image with alpha");
if (pnm->depth != 5)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of range for cmyk pnm image with alpha");
pnm->cs = fz_device_cmyk(ctx);
pnm->alpha = 1;
}
else
{
fz_free(ctx, pnm->tupletype);
fz_throw(ctx, FZ_ERROR_GENERIC, "unsupported tupletype");
}
fz_free(ctx, pnm->tupletype);
if (!onlymeta)
{
unsigned char *dp;
int x, y, k;
img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, pnm->alpha);
dp = img->samples;
if (bitmap)
{
if (e - p < pnm->height * pnm->width * img->n)
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated image");
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->colorspace->n; k++)
{
if (*p)
*dp = 0x00;
else
*dp = 0xff;
dp++;
p++;
}
}
else
{
if (pnm->maxval == 255)
{
if (e - p < pnm->height * pnm->width * img->n)
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated image");
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->n; k++)
*dp++ = *p++;
}
else if (pnm->maxval < 256)
{
if (e - p < pnm->height * pnm->width * img->n)
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated image");
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->n; k++)
*dp++ = map_color(ctx, *p++, pnm->maxval, 255);
}
else
{
if (e - p < pnm->height * pnm->width * img->n * 2)
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated image");
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->n; k++)
{
*dp++ = map_color(ctx, (p[0] << 8) | p[1], pnm->maxval, 255);
p += 2;
}
}
}
}
return img;
}
static fz_pixmap *
pnm_binary_read_image(fz_context *ctx, struct info *pnm, unsigned char *p, unsigned char *e, int onlymeta, int bitmap)
{
fz_pixmap *img = NULL;
p = pnm_read_number(ctx, p, e, &pnm->width);
p = pnm_read_white(ctx, p, e, 0);
if (bitmap)
{
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 1);
pnm->maxval = 1;
}
else
{
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 0);
p = pnm_read_number(ctx, p, e, &pnm->maxval);
p = pnm_read_white(ctx, p, e, 1);
if (pnm->maxval < 0 || pnm->maxval >= 65536)
fz_throw(ctx, FZ_ERROR_GENERIC, "maximum sample value of out range in pnm image: %d", pnm->maxval);
}
if (!onlymeta)
{
unsigned char *dp;
int x, y, k;
img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, 0);
dp = img->samples;
if (bitmap)
{
for (y = 0; y < pnm->height; y++)
{
for (x = 0; x < pnm->width; x++)
{
if (*p & (1 << (7 - (x & 0x7))))
*dp = 0x00;
else
*dp = 0xff;
dp++;
if ((x & 0x7) == 7)
p++;
}
if (pnm->width & 0x7)
p++;
}
}
else
{
if (pnm->maxval == 255)
{
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->colorspace->n; k++)
*dp++ = *p++;
}
else if (pnm->maxval < 256)
{
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->colorspace->n; k++)
*dp++ = map_color(ctx, *p++, pnm->maxval, 255);
}
else
{
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->colorspace->n; k++)
{
*dp++ = map_color(ctx, (p[0] << 8) | p[1], pnm->maxval, 255);
p += 2;
}
}
}
}
return img;
}
static fz_pixmap *
pnm_ascii_read_image(fz_context *ctx, struct info *pnm, unsigned char *p, unsigned char *e, int onlymeta, int bitmap)
{
fz_pixmap *img = NULL;
p = pnm_read_number(ctx, p, e, &pnm->width);
p = pnm_read_white(ctx, p, e, 0);
if (bitmap)
{
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 1);
pnm->maxval = 1;
}
else
{
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 0);
p = pnm_read_number(ctx, p, e, &pnm->maxval);
p = pnm_read_white(ctx, p, e, 0);
if (pnm->maxval < 0 || pnm->maxval >= 65536)
fz_throw(ctx, FZ_ERROR_GENERIC, "maximum sample value of out range in pnm image: %d", pnm->maxval);
}
if (!onlymeta)
{
unsigned char *dp;
int x, y, k;
img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, 0);
dp = img->samples;
if (bitmap)
{
for (y = 0; y < pnm->height; y++)
{
for (x = 0; x < pnm->width; x++)
{
int v = 0;
p = pnm_read_number(ctx, p, e, &v);
p = pnm_read_white(ctx, p, e, 0);
if (v == 0)
*dp = 0x00;
else
*dp = 0xff;
dp++;
}
}
}
else
{
for (y = 0; y < pnm->height; y++)
for (x = 0; x < pnm->width; x++)
for (k = 0; k < img->colorspace->n; k++)
{
int v = 0;
p = pnm_read_number(ctx, p, e, &v);
p = pnm_read_white(ctx, p, e, 0);
v = fz_clampi(v, 0, pnm->maxval);
*dp++ = map_color(ctx, v, pnm->maxval, 255);
}
}
}
return img;
}
/*-----------------------------------------------------------------------------------*/
void
textcolor(unsigned char c)
{
color = map_color(c);
setcolor();
}
/*
* Put cell element "element" onto the board, and draw it on screen.
* This currently means to fill the cell with a unique color,
* but this could be more elaborate...
* @param pos: location of element
* @param element: type of cell element (e.g. wall)
*/
static void
put_cell(const coord_t pos, cell_t element) {
put_board(pos, element);
uint32_t color = map_color(element);
gfx_draw_rect(pos.x * cellWidth, pos.y * cellWidth, cellWidth, cellWidth, color);
}
static fz_pixmap *
pam_binary_read_image(fz_context *ctx, struct info *pnm, const unsigned char *p, const unsigned char *e, int onlymeta, const unsigned char **out)
{
fz_pixmap *img = NULL;
int bitmap = 0;
int minval = 1;
int maxval = 65535;
fz_var(img);
p = pam_binary_read_header(ctx, pnm, p, e);
if (pnm->tupletype == PAM_UNKNOWN)
switch (pnm->depth)
{
case 1: pnm->tupletype = pnm->maxval == 1 ? PAM_BW : PAM_GRAY; break;
case 2: pnm->tupletype = pnm->maxval == 1 ? PAM_BWA : PAM_GRAYA; break;
case 3: pnm->tupletype = PAM_RGB; break;
case 4: pnm->tupletype = PAM_CMYK; break;
case 5: pnm->tupletype = PAM_CMYKA; break;
default:
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot guess tuple type based on depth in pnm image");
}
if (pnm->tupletype == PAM_BW && pnm->maxval > 1)
pnm->tupletype = PAM_GRAY;
else if (pnm->tupletype == PAM_GRAY && pnm->maxval == 1)
pnm->tupletype = PAM_BW;
else if (pnm->tupletype == PAM_BWA && pnm->maxval > 1)
pnm->tupletype = PAM_GRAYA;
else if (pnm->tupletype == PAM_GRAYA && pnm->maxval == 1)
pnm->tupletype = PAM_BWA;
switch (pnm->tupletype)
{
case PAM_BWA:
pnm->alpha = 1;
/* fallthrough */
case PAM_BW:
pnm->cs = fz_device_gray(ctx);
maxval = 1;
bitmap = 1;
break;
case PAM_GRAYA:
pnm->alpha = 1;
/* fallthrough */
case PAM_GRAY:
pnm->cs = fz_device_gray(ctx);
minval = 2;
break;
case PAM_RGBA:
pnm->alpha = 1;
/* fallthrough */
case PAM_RGB:
pnm->cs = fz_device_rgb(ctx);
break;
case PAM_CMYKA:
pnm->alpha = 1;
/* fallthrough */
case PAM_CMYK:
pnm->cs = fz_device_cmyk(ctx);
break;
default:
fz_throw(ctx, FZ_ERROR_GENERIC, "unsupported tuple type");
}
if (pnm->depth != fz_colorspace_n(ctx, pnm->cs) + pnm->alpha)
fz_throw(ctx, FZ_ERROR_GENERIC, "depth out of tuple type range");
if (pnm->maxval < minval || pnm->maxval > maxval)
fz_throw(ctx, FZ_ERROR_GENERIC, "maxval out of range");
pnm->bitdepth = bitdepth_from_maxval(pnm->maxval);
if (pnm->height <= 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "image height must be > 0");
if (pnm->width <= 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "image width must be > 0");
if ((unsigned int)pnm->height > UINT_MAX / pnm->width / fz_colorspace_n(ctx, pnm->cs) / (pnm->bitdepth / 8 + 1))
fz_throw(ctx, FZ_ERROR_GENERIC, "image too large");
if (onlymeta)
{
int packed;
int w, h, n;
w = pnm->width;
h = pnm->height;
n = fz_colorspace_n(ctx, pnm->cs) + pnm->alpha;
/* some encoders incorrectly pack bits into bytes and invert the image */
packed = 0;
if (pnm->maxval == 1) {
const unsigned char *e_packed = p + w * h * n / 8;
if (e_packed < e - 1 && e_packed[0] == 'P' && e_packed[1] >= '0' && e_packed[1] <= '7')
e = e_packed;
if (e - p < w * h * n)
packed = 1;
}
if (packed && e - p < w * h * n / 8)
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated packed image");
if (!packed && e - p < w * h * n * (pnm->maxval < 256 ? 1 : 2))
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated image");
if (pnm->maxval == 255)
p += n * w * h;
else if (bitmap && packed)
p += ((w + 7) / 8) * h;
else if (bitmap)
p += n * w * h;
else if (pnm->maxval < 255)
p += n * w * h;
else
p += 2 * n * w * h;
}
if (!onlymeta)
{
unsigned char *dp;
int x, y, k, packed;
int w, h, n;
img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, NULL, pnm->alpha);
fz_try(ctx)
{
dp = img->samples;
w = img->w;
h = img->h;
n = img->n;
/* some encoders incorrectly pack bits into bytes and invert the image */
packed = 0;
if (pnm->maxval == 1) {
const unsigned char *e_packed = p + w * h * n / 8;
if (e_packed < e - 1 && e_packed[0] == 'P' && e_packed[1] >= '0' && e_packed[1] <= '7')
e = e_packed;
if (e - p < w * h * n)
packed = 1;
}
if (packed && e - p < w * h * n / 8)
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated packed image");
if (!packed && e - p < w * h * n * (pnm->maxval < 256 ? 1 : 2))
fz_throw(ctx, FZ_ERROR_GENERIC, "truncated image");
if (pnm->maxval == 255)
memcpy(dp, p, w * h * n);
else if (bitmap && packed)
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
{
for (k = 0; k < n; k++)
{
*dp++ = (*p & (1 << (7 - (x & 0x7)))) ? 0x00 : 0xff;
if ((x & 0x7) == 7)
p++;
}
if (w & 0x7)
p++;
}
}
else if (bitmap)
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
*dp++ = *p++ ? 0xff : 0x00;
}
else if (pnm->maxval < 255)
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
*dp++ = map_color(ctx, *p++, pnm->maxval, 255);
}
else
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
{
*dp++ = map_color(ctx, (p[0] << 8) | p[1], pnm->maxval, 255);
p += 2;
}
}
if (pnm->alpha)
fz_premultiply_pixmap(ctx, img);
}
fz_catch(ctx)
{
fz_drop_pixmap(ctx, img);
fz_rethrow(ctx);
}
}
static fz_pixmap *
pnm_binary_read_image(fz_context *ctx, struct info *pnm, const unsigned char *p, const unsigned char *e, int onlymeta, int bitmap, const unsigned char **out)
{
fz_pixmap *img = NULL;
pnm->width = 0;
p = pnm_read_number(ctx, p, e, &pnm->width);
p = pnm_read_white(ctx, p, e, 0);
if (bitmap)
{
pnm->height = 0;
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 1);
pnm->maxval = 1;
}
else
{
pnm->height = 0;
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 0);
pnm->maxval = 0;
p = pnm_read_number(ctx, p, e, &pnm->maxval);
p = pnm_read_white(ctx, p, e, 1);
}
if (pnm->maxval <= 0 || pnm->maxval >= 65536)
fz_throw(ctx, FZ_ERROR_GENERIC, "maximum sample value of out range in pnm image: %d", pnm->maxval);
pnm->bitdepth = bitdepth_from_maxval(pnm->maxval);
if (pnm->height <= 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "image height must be > 0");
if (pnm->width <= 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "image width must be > 0");
if ((unsigned int)pnm->height > UINT_MAX / pnm->width / fz_colorspace_n(ctx, pnm->cs) / (pnm->bitdepth / 8 + 1))
fz_throw(ctx, FZ_ERROR_GENERIC, "image too large");
if (onlymeta)
{
int w = pnm->width;
int h = pnm->height;
int n = fz_colorspace_n(ctx, pnm->cs);
if (pnm->maxval == 255)
p += n * w * h;
else if (bitmap)
p += ((w + 7) / 8) * h;
else if (pnm->maxval < 255)
p += n * w * h;
else
p += 2 * n * w * h;
}
else
{
unsigned char *dp;
int x, y, k;
int w, h, n;
img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, NULL, 0);
dp = img->samples;
w = img->w;
h = img->h;
n = img->n;
if (pnm->maxval == 255) {
memcpy(dp, p, w * h * n);
p += n * w * h;
}
else if (bitmap)
{
for (y = 0; y < h; y++)
{
for (x = 0; x < w; x++)
{
*dp++ = (*p & (1 << (7 - (x & 0x7)))) ? 0x00 : 0xff;
if ((x & 0x7) == 7)
p++;
}
if (w & 0x7)
p++;
}
}
else if (pnm->maxval < 255)
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
*dp++ = map_color(ctx, *p++, pnm->maxval, 255);
}
else
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
{
*dp++ = map_color(ctx, (p[0] << 8) | p[1], pnm->maxval, 255);
p += 2;
}
}
}
if (out)
*out = p;
return img;
}
static fz_pixmap *
pnm_ascii_read_image(fz_context *ctx, struct info *pnm, const unsigned char *p, const unsigned char *e, int onlymeta, int bitmap, const unsigned char **out)
{
fz_pixmap *img = NULL;
p = pnm_read_number(ctx, p, e, &pnm->width);
p = pnm_read_white(ctx, p, e, 0);
if (bitmap)
{
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 1);
pnm->maxval = 1;
}
else
{
p = pnm_read_number(ctx, p, e, &pnm->height);
p = pnm_read_white(ctx, p, e, 0);
p = pnm_read_number(ctx, p, e, &pnm->maxval);
p = pnm_read_white(ctx, p, e, 0);
}
if (pnm->maxval <= 0 || pnm->maxval >= 65536)
fz_throw(ctx, FZ_ERROR_GENERIC, "maximum sample value of out range in pnm image: %d", pnm->maxval);
pnm->bitdepth = bitdepth_from_maxval(pnm->maxval);
if (pnm->height <= 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "image height must be > 0");
if (pnm->width <= 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "image width must be > 0");
if ((unsigned int)pnm->height > UINT_MAX / pnm->width / fz_colorspace_n(ctx, pnm->cs) / (pnm->bitdepth / 8 + 1))
fz_throw(ctx, FZ_ERROR_GENERIC, "image too large");
if (onlymeta)
{
int x, y, k;
int w, h, n;
w = pnm->width;
h = pnm->height;
n = fz_colorspace_n(ctx, pnm->cs);
if (bitmap)
{
for (y = 0; y < h; y++)
for (x = -1; x < w; x++)
{
p = pnm_read_number(ctx, p, e, NULL);
p = pnm_read_white(ctx, p, e, 0);
}
}
else
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
{
p = pnm_read_number(ctx, p, e, NULL);
p = pnm_read_white(ctx, p, e, 0);
}
}
}
else
{
unsigned char *dp;
int x, y, k;
int w, h, n;
img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, NULL, 0);
dp = img->samples;
w = img->w;
h = img->h;
n = img->n;
if (bitmap)
{
for (y = 0; y < h; y++)
{
for (x = 0; x < w; x++)
{
int v = 0;
p = pnm_read_number(ctx, p, e, &v);
p = pnm_read_white(ctx, p, e, 0);
*dp++ = v ? 0x00 : 0xff;
}
}
}
else
{
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
for (k = 0; k < n; k++)
{
int v = 0;
p = pnm_read_number(ctx, p, e, &v);
p = pnm_read_white(ctx, p, e, 0);
v = fz_clampi(v, 0, pnm->maxval);
*dp++ = map_color(ctx, v, pnm->maxval, 255);
}
}
}
if (out)
*out = p;
return img;
}
