void * bitmap_realloc( int w, int h, short bpp, int rowstride, unsigned int state, void * bmp )
{
struct bitmap * bitmap = bmp;
int newsize = rowstride * h;
if( bitmap == NULL ) {
return( NULL );
}
assert( bitmap->pixdata != NULL );
int oldsize = bitmap->rowstride * bitmap->height;
bool doalloc = (state & BITMAP_GROW) ? (newsize > oldsize) : (newsize != oldsize);
if( newsize > oldsize )
assert( doalloc == true );
if( doalloc ) {
// TODO: set red band to a specific value and check the red band
// on bitmap_destroy()
bitmap->pixdata = realloc( bitmap->pixdata, newsize + 128 );
if( bitmap->pixdata == NULL )
return( NULL );
}
if( state & BITMAP_CLEAR ){
memset( bitmap->pixdata, 0x00, newsize + 128 );
}
bitmap->width = w;
bitmap->height = h;
bitmap->bpp = bpp;
bitmap->resized = NULL;
bitmap->rowstride = rowstride;
bitmap_modified( bitmap );
return( bitmap );
}
static bool nspng_convert(struct content *c)
{
nspng_content *png_c = (nspng_content *) c;
char *title;
assert(png_c->png != NULL);
assert(png_c->info != NULL);
/* clean up png structures */
png_destroy_read_struct(&png_c->png, &png_c->info, 0);
/* set title text */
title = messages_get_buff("PNGTitle",
nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
c->width, c->height);
if (title != NULL) {
content__set_title(c, title);
free(title);
}
if (png_c->bitmap != NULL) {
bitmap_set_opaque(png_c->bitmap, bitmap_test_opaque(png_c->bitmap));
bitmap_modified(png_c->bitmap);
}
image_cache_add(c, png_c->bitmap, png_cache_convert);
content_set_ready(c);
content_set_done(c);
content_set_status(c, "");
return true;
}
bool nsico_convert(struct content *c)
{
struct bmp_image *bmp;
bmp_result res;
ico_collection *ico;
union content_msg_data msg_data;
const char *data;
unsigned long size;
char title[100];
/* set the ico data */
ico = c->data.ico.ico;
data = content__get_source_data(c, &size);
/* analyse the ico */
res = ico_analyse(ico, size, (unsigned char *) data);
switch (res) {
case BMP_OK:
break;
case BMP_INSUFFICIENT_MEMORY:
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
case BMP_INSUFFICIENT_DATA:
case BMP_DATA_ERROR:
msg_data.error = messages_get("BadICO");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* Store our content width and description */
c->width = ico->width;
c->height = ico->height;
snprintf(title, sizeof(title), messages_get("ICOTitle"),
c->width, c->height, size);
content__set_title(c, title);
c->size += (ico->width * ico->height * 4) + 16 + 44;
/* exit as a success */
bmp = ico_find(c->data.ico.ico, 255, 255);
assert(bmp);
c->bitmap = bmp->bitmap;
bitmap_modified(c->bitmap);
c->status = CONTENT_STATUS_DONE;
/* Done: update status bar */
content_set_status(c, "");
return true;
}
void * bitmap_realloc( int w, int h, short bpp, int rowstride, unsigned int state, void * bmp )
{
struct bitmap * bitmap = bmp;
int newsize = rowstride * h;
if( bitmap == NULL ) {
return( NULL );
}
if( bitmap->pixdata == NULL ) {
assert( 1 == 0 );
/* add some buffer for bad code */
bitmap->pixdata = malloc( newsize + 128 );
bitmap->opaque = false;
} else {
int oldsize = bitmap->rowstride * bitmap->height;
bool doalloc = ( state == BITMAP_GROW) ? (newsize > oldsize) : (newsize != oldsize);
if( newsize > oldsize )
assert( doalloc == true );
if( doalloc ) {
bitmap->pixdata = realloc( bitmap->pixdata, newsize + 128 );
if( bitmap->pixdata == NULL )
return( NULL );
}
}
if( state & BITMAP_CLEAR ){
memset( bitmap->pixdata, 0x00, newsize + 128 );
}
bitmap->width = w;
bitmap->height = h;
bitmap->bpp = bpp;
bitmap->resized = NULL;
bitmap->rowstride = rowstride;
bitmap_modified( bitmap );
return( bitmap );
}
static struct bitmap *
jpeg_cache_convert(struct content *c)
{
uint8_t *source_data; /* Jpeg source data */
unsigned long source_size; /* length of Jpeg source data */
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
jmp_buf setjmp_buffer;
unsigned int height;
unsigned int width;
struct bitmap * volatile bitmap = NULL;
uint8_t * volatile pixels = NULL;
size_t rowstride;
struct jpeg_source_mgr source_mgr = {
0,
0,
nsjpeg_init_source,
nsjpeg_fill_input_buffer,
nsjpeg_skip_input_data,
jpeg_resync_to_restart,
nsjpeg_term_source };
/* obtain jpeg source data and perfom minimal sanity checks */
source_data = (uint8_t *)content__get_source_data(c, &source_size);
if ((source_data == NULL) ||
(source_size < MIN_JPEG_SIZE)) {
return NULL;
}
/* setup a JPEG library error handler */
cinfo.err = jpeg_std_error(&jerr);
jerr.error_exit = nsjpeg_error_exit;
jerr.output_message = nsjpeg_error_log;
/* handler for fatal errors during decompression */
if (setjmp(setjmp_buffer)) {
jpeg_destroy_decompress(&cinfo);
return bitmap;
}
jpeg_create_decompress(&cinfo);
cinfo.client_data = &setjmp_buffer;
/* setup data source */
source_mgr.next_input_byte = source_data;
source_mgr.bytes_in_buffer = source_size;
cinfo.src = &source_mgr;
/* read JPEG header information */
jpeg_read_header(&cinfo, TRUE);
/* set output processing parameters */
cinfo.out_color_space = JCS_RGB;
cinfo.dct_method = JDCT_ISLOW;
/* commence the decompression, output parameters now valid */
jpeg_start_decompress(&cinfo);
width = cinfo.output_width;
height = cinfo.output_height;
/* create opaque bitmap (jpegs cannot be transparent) */
bitmap = bitmap_create(width, height, BITMAP_NEW | BITMAP_OPAQUE);
if (bitmap == NULL) {
/* empty bitmap could not be created */
jpeg_destroy_decompress(&cinfo);
return NULL;
}
pixels = bitmap_get_buffer(bitmap);
if (pixels == NULL) {
/* bitmap with no buffer available */
bitmap_destroy(bitmap);
jpeg_destroy_decompress(&cinfo);
return NULL;
}
/* Convert scanlines from jpeg into bitmap */
rowstride = bitmap_get_rowstride(bitmap);
do {
JSAMPROW scanlines[1];
#if RGB_RED != 0 || RGB_GREEN != 1 || RGB_BLUE != 2 || RGB_PIXELSIZE != 4
int i;
scanlines[0] = (JSAMPROW) (pixels +
rowstride * cinfo.output_scanline);
jpeg_read_scanlines(&cinfo, scanlines, 1);
/* expand to RGBA */
for (i = width - 1; 0 <= i; i--) {
int r = scanlines[0][i * RGB_PIXELSIZE + RGB_RED];
int g = scanlines[0][i * RGB_PIXELSIZE + RGB_GREEN];
int b = scanlines[0][i * RGB_PIXELSIZE + RGB_BLUE];
scanlines[0][i * 4 + 0] = r;
scanlines[0][i * 4 + 1] = g;
scanlines[0][i * 4 + 2] = b;
scanlines[0][i * 4 + 3] = 0xff;
}
#else
scanlines[0] = (JSAMPROW) (pixels +
rowstride * cinfo.output_scanline);
jpeg_read_scanlines(&cinfo, scanlines, 1);
#endif
} while (cinfo.output_scanline != cinfo.output_height);
bitmap_modified(bitmap);
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
return bitmap;
}
static bool rsvg_convert(struct content *c)
{
rsvg_content *d = (rsvg_content *) c;
union content_msg_data msg_data;
RsvgDimensionData rsvgsize;
GError *err = NULL;
if (rsvg_handle_close(d->rsvgh, &err) == FALSE) {
LOG(("rsvg_handle_close returned an error: %s", err->message));
msg_data.error = err->message;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
assert(err == NULL);
/* we should now be able to query librsvg for the natural size of the
* graphic, so we can create our bitmap.
*/
rsvg_handle_get_dimensions(d->rsvgh, &rsvgsize);
c->width = rsvgsize.width;
c->height = rsvgsize.height;
if ((d->bitmap = bitmap_create(c->width, c->height,
BITMAP_NEW)) == NULL) {
LOG(("Failed to create bitmap for rsvg render."));
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
if ((d->cs = cairo_image_surface_create_for_data(
(unsigned char *)bitmap_get_buffer(d->bitmap),
CAIRO_FORMAT_ARGB32,
c->width, c->height,
bitmap_get_rowstride(d->bitmap))) == NULL) {
LOG(("Failed to create Cairo image surface for rsvg render."));
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
if ((d->ct = cairo_create(d->cs)) == NULL) {
LOG(("Failed to create Cairo drawing context for rsvg render."));
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
rsvg_handle_render_cairo(d->rsvgh, d->ct);
rsvg_argb_to_abgr(bitmap_get_buffer(d->bitmap),
c->width, c->height,
bitmap_get_rowstride(d->bitmap));
bitmap_modified(d->bitmap);
content_set_ready(c);
content_set_done(c);
/* Done: update status bar */
content_set_status(c, "");
return true;
}
bool amiga_icon_convert(struct content *c)
{
amiga_icon_content *icon_c = (amiga_icon_content *)c;
union content_msg_data msg_data;
struct DiskObject *dobj;
ULONG *imagebuf;
unsigned char *imagebufptr = NULL;
ULONG size;
int width = 0, height = 0;
long format = 0;
int err = 0;
uint8 r, g, b, a;
ULONG offset;
const char *url;
char *filename;
char *p;
ULONG trans, pals1;
struct ColorRegister *pal1;
url = nsurl_access(content_get_url(c));
filename = url_to_path(url);
/* This loader will only work on local files, so fail if not a local path */
if(filename == NULL)
{
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
p = strstr(filename, ".info");
*p = '\0';
dobj = GetIconTagList(filename, NULL);
if(dobj == NULL)
{
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
err = IconControl(dobj,
ICONCTRLA_GetImageDataFormat,&format,
ICONCTRLA_GetWidth,&width,
ICONCTRLA_GetHeight,&height,
TAG_DONE);
/* Check icon is direct mapped (truecolour) or palette-mapped colour.
We need additional code to handle planar icons */
if((format != IDFMT_DIRECTMAPPED) && (format==IDFMT_PALETTEMAPPED)) {
if(dobj) FreeDiskObject(dobj);
return false;
}
icon_c->bitmap = bitmap_create(width, height, BITMAP_NEW);
if (!icon_c->bitmap) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
if(dobj) FreeDiskObject(dobj);
return false;
}
imagebuf = (ULONG *) bitmap_get_buffer(icon_c->bitmap);
if (!imagebuf) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
if(dobj) FreeDiskObject(dobj);
return false;
}
err = IconControl(dobj,
ICONCTRLA_GetImageData1, &imagebufptr,
TAG_DONE);
if(format==IDFMT_PALETTEMAPPED)
{
IconControl(dobj, ICONCTRLA_GetTransparentColor1, &trans,
ICONCTRLA_GetPalette1, &pal1,
ICONCTRLA_GetPaletteSize1, &pals1,
TAG_DONE);
imagebufptr = (unsigned char *) amiga_icon_convertcolouricon32((UBYTE *)imagebufptr,
width, height, trans, pals1, pal1, 0xff);
}
/* Decoded data is ARGB, so ensure correct byte order */
size = width * height * 4;
for (offset = 0; offset < size; offset += 4) {
b = imagebufptr[offset+3];
g = imagebufptr[offset+2];
r = imagebufptr[offset+1];
a = imagebufptr[offset];
*imagebuf = r << 24 | g << 16 | b << 8 | a;
imagebuf++;
}
c->width = width;
c->height = height;
bitmap_modified(icon_c->bitmap);
content_set_ready(c);
content_set_done(c);
content_set_status(c, "");
if(dobj) FreeDiskObject(dobj);
if(format==IDFMT_PALETTEMAPPED)
FreeVec(imagebufptr);
return true;
}
/** PNG content to bitmap conversion.
*
* This routine generates a bitmap object from a PNG image content
*/
static struct bitmap *
png_cache_convert(struct content *c)
{
png_structp png_ptr;
png_infop info_ptr;
png_infop end_info_ptr;
volatile struct bitmap *bitmap = NULL;
struct png_cache_read_data_s png_cache_read_data;
png_uint_32 width, height;
volatile png_bytep *row_pointers = NULL;
png_cache_read_data.data =
content__get_source_data(c, &png_cache_read_data.size);
if ((png_cache_read_data.data == NULL) ||
(png_cache_read_data.size <= 8)) {
return NULL;
}
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
nspng_error, nspng_warning);
if (png_ptr == NULL) {
return NULL;
}
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
png_destroy_read_struct(&png_ptr, NULL, NULL);
return NULL;
}
end_info_ptr = png_create_info_struct(png_ptr);
if (end_info_ptr == NULL) {
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
return NULL;
}
/* setup error exit path */
if (setjmp(png_jmpbuf(png_ptr))) {
/* cleanup and bail */
goto png_cache_convert_error;
}
/* read from a buffer instead of stdio */
png_set_read_fn(png_ptr, &png_cache_read_data, png_cache_read_fn);
/* ensure the png info structure is populated */
png_read_info(png_ptr, info_ptr);
/* setup output transforms */
nspng_setup_transforms(png_ptr, info_ptr);
width = png_get_image_width(png_ptr, info_ptr);
height = png_get_image_height(png_ptr, info_ptr);
/* Claim the required memory for the converted PNG */
bitmap = bitmap_create(width, height, BITMAP_NEW);
if (bitmap == NULL) {
/* cleanup and bail */
goto png_cache_convert_error;
}
row_pointers = calc_row_pointers((struct bitmap *) bitmap);
if (row_pointers != NULL) {
png_read_image(png_ptr, (png_bytep *) row_pointers);
}
png_cache_convert_error:
/* cleanup png read */
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info_ptr);
free((png_bytep *) row_pointers);
if (bitmap != NULL)
bitmap_modified((struct bitmap *)bitmap);
return (struct bitmap *)bitmap;
}
