// Allocate and return a gr_surface sufficient for storing an image of
// the indicated size in the framebuffer pixel format.
static GGLSurface* init_display_surface(png_uint_32 width, png_uint_32 height) {
GGLSurface* surface;
surface = (GGLSurface*) malloc_surface(width * height * 4);
if (surface == NULL) return NULL;
surface->version = sizeof(GGLSurface);
surface->width = width;
surface->height = height;
surface->stride = width;
return surface;
}
// Allocate and return a gr_surface sufficient for storing an image of
// the indicated size in the framebuffer pixel format.
static gr_surface init_display_surface(png_uint_32 width, png_uint_32 height) {
gr_surface surface;
surface = malloc_surface(width * height * 4);
if (surface == NULL) return NULL;
surface->width = width;
surface->height = height;
surface->row_bytes = width * 4;
surface->pixel_bytes = 4;
return surface;
}
int
res_create_alpha_surface(const char *name, gr_surface *pSurface)
{
int result = 0;
unsigned int y;
unsigned char *p_row;
gr_surface surface = NULL;
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
png_uint_32 width, height;
png_byte channels;
FILE *fp = NULL;
*pSurface = NULL;
result = open_png(name, &png_ptr, &info_ptr, &fp, &width, &height,
&channels);
if (result < 0)
return result;
if (channels != 1) {
result = -7;
goto exit;
}
if (!(surface = malloc_surface(width * height))) {
result = -8;
goto exit;
}
surface->width = width;
surface->height = height;
surface->row_bytes = width;
surface->pixel_bytes = 1;
for (y = 0; y < height; y++) {
p_row = surface->data + y * surface->row_bytes;
png_read_row(png_ptr, p_row, NULL);
}
*pSurface = surface;
exit:
close_png(&png_ptr, &info_ptr, fp);
if (result < 0 && surface != NULL)
free(surface);
return result;
}
int res_create_alpha_surface(const char* name, gr_surface* pSurface) {
gr_surface surface = NULL;
int result = 0;
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
png_uint_32 width, height;
png_byte channels;
*pSurface = NULL;
result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);
if (result < 0) return result;
if (channels != 1) {
result = -7;
goto exit;
}
surface = malloc_surface(width * height);
if (surface == NULL) {
result = -8;
goto exit;
}
surface->width = width;
surface->height = height;
surface->row_bytes = width;
surface->pixel_bytes = 1;
#if defined(RECOVERY_ABGR) || defined(RECOVERY_BGRA)
png_set_bgr(png_ptr);
#endif
unsigned char* p_row;
unsigned int y;
for (y = 0; y < height; ++y) {
p_row = surface->data + y * surface->row_bytes;
png_read_row(png_ptr, p_row, NULL);
}
*pSurface = surface;
exit:
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
if (result < 0 && surface != NULL) free(surface);
return result;
}
int res_create_theme_localized_alpha_surface(const char* name,
const char* themename,
const char* locale,
gr_surface* pSurface) {
gr_surface surface = NULL;
int result = 0;
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
png_uint_32 width, height;
png_byte channels;
*pSurface = NULL;
if (locale == NULL) {
surface = malloc_surface(0);
surface->width = 0;
surface->height = 0;
surface->row_bytes = 0;
surface->pixel_bytes = 1;
goto exit;
}
result = open_theme_png(name, themename, &png_ptr, &info_ptr, &width, &height, &channels);
if (result < 0) return result;
if (channels != 1) {
result = -7;
goto exit;
}
unsigned char* row = malloc(width);
png_uint_32 y;
for (y = 0; y < height; ++y) {
png_read_row(png_ptr, row, NULL);
int w = (row[1] << 8) | row[0];
int h = (row[3] << 8) | row[2];
int len = row[4];
char* loc = (char*)row+5;
if (y+1+h >= height || matches_locale(loc, locale)) {
printf(" %20s: %s (%d x %d @ %d)\n", name, loc, w, h, y);
surface = malloc_surface(w*h);
if (surface == NULL) {
result = -8;
goto exit;
}
surface->width = w;
surface->height = h;
surface->row_bytes = w;
surface->pixel_bytes = 1;
int i;
for (i = 0; i < h; ++i, ++y) {
png_read_row(png_ptr, row, NULL);
memcpy(surface->data + i*w, row, w);
}
*pSurface = (gr_surface) surface;
break;
} else {
int i;
for (i = 0; i < h; ++i, ++y) {
png_read_row(png_ptr, row, NULL);
}
}
}
exit:
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
if (result < 0 && surface != NULL) free(surface);
return result;
}
int
res_create_localized_alpha_surface(const char *name, const char *locale,
gr_surface *pSurface)
{
int result = 0;
unsigned char *row;
gr_surface surface = NULL;
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
png_uint_32 width, height, y;
png_byte channels;
FILE *fp = NULL;
*pSurface = NULL;
if (!locale) {
surface = malloc_surface(0);
surface->width = 0;
surface->height = 0;
surface->row_bytes = 0;
surface->pixel_bytes = 1;
goto exit;
}
result = open_png(name, &png_ptr, &info_ptr, &fp, &width, &height,
&channels);
if (result < 0)
return result;
if (channels != 1) {
result = -7;
goto exit;
}
/* TODO: check for error */
row = malloc(width);
for (y = 0; y < height; y++) {
int h, w;
char *loc;
png_read_row(png_ptr, row, NULL);
w = (row[1] << 8) | row[0];
h = (row[3] << 8) | row[2];
loc = (char *)row + 5;
if (y + 1 + h >= height || matches_locale(loc, locale)) {
int i;
printf(" %20s: %s (%d x %d @ %ld)\n", name, loc, w,
h, (long)y);
if (!(surface = malloc_surface(w * h))) {
result = -8;
goto exit;
}
surface->width = w;
surface->height = h;
surface->row_bytes = w;
surface->pixel_bytes = 1;
for (i = 0; i < h; i++, y++) {
png_read_row(png_ptr, row, NULL);
memcpy(surface->data + i * w, row, w);
}
*pSurface = (gr_surface)surface;
break;
} else {
int i;
for (i = 0; i < h; i++, y++)
png_read_row(png_ptr, row, NULL);
}
}
exit:
close_png(&png_ptr, &info_ptr, fp);
if (result < 0 && surface)
free(surface);
return result;
}