Incremental loading images using ImageIO

svn path=/trunk/netsurf/; revision=12367
This commit is contained in:
Sven Weidauer 2011-05-10 13:28:17 +00:00
parent a2b1e4bcd0
commit e23fdcae82

View File

@ -44,10 +44,12 @@ static bool apple_image_redraw(struct content *c, int x, int y,
static nserror apple_image_clone(const struct content *old,
struct content **newc);
static content_type apple_image_content_type(lwc_string *mime_type);
static bool apple_image_process_data(struct content *c, const char *data, unsigned int size);
static const content_handler apple_image_content_handler = {
.create = apple_image_create,
.data_complete = apple_image_convert,
.process_data = apple_image_process_data,
.destroy = apple_image_destroy,
.redraw = apple_image_redraw,
.clone = apple_image_clone,
@ -55,6 +57,9 @@ static const content_handler apple_image_content_handler = {
.no_share = false
};
static NSBitmapImageRep *ImageRepForContent( struct content *c );
static NSData *DataForContent( struct content * c);
static lwc_string **apple_image_mime_types = NULL;
static size_t types_count = 0;
static size_t types_capacity = 0;
@ -165,22 +170,21 @@ nserror apple_image_create(const content_handler *handler,
bool apple_image_convert(struct content *c)
{
unsigned long size;
const char *bytes = content__get_source_data(c, &size);
NSData *data = [NSData dataWithBytesNoCopy: (char *)bytes length: size freeWhenDone: NO];
NSBitmapImageRep *image = [[NSBitmapImageRep imageRepWithData: data] retain];
if (image == nil) {
NSBitmapImageRep *image = ImageRepForContent( c );
if (image == nil) return false;
NSData *data = DataForContent( c );
NSInteger rc = [image incrementalLoadFromData: data complete: YES];
if (rc != NSImageRepLoadStatusCompleted) {
union content_msg_data msg_data;
msg_data.error = "cannot decode image";
msg_data.error = "invalid image data";
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
c->width = [image pixelsWide];
c->height = [image pixelsHigh];
c->bitmap = (void *)image;
char title[100];
snprintf( title, sizeof title, "Image (%dx%d)", c->width, c->height );
@ -254,4 +258,45 @@ bool apple_image_redraw(struct content *c, int x, int y,
flags);
}
bool apple_image_process_data(struct content *c, const char *newData, unsigned int newSize)
{
NSBitmapImageRep *image = ImageRepForContent( c );
if (image == nil) return false;
NSData *data = DataForContent( c );
NSInteger rc = [image incrementalLoadFromData: data complete: NO];
if (rc == NSImageRepLoadStatusInvalidData) {
union content_msg_data msg_data;
msg_data.error = "invalid data";
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
return true;
}
NSData *DataForContent( struct content * c)
{
unsigned long sz = 0;
const char *bytes = content__get_source_data(c, &sz );
return [NSData dataWithBytesNoCopy: (char *)bytes length: sz freeWhenDone: NO];
}
NSBitmapImageRep *ImageRepForContent( struct content *c )
{
NSBitmapImageRep *image = (NSBitmapImageRep *)c->bitmap;
if (image == nil) {
image = [[NSBitmapImageRep alloc] initForIncrementalLoad];
if (image == nil) {
union content_msg_data msg_data;
msg_data.error = "not enough memory for image";
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
}
c->bitmap = (void *)image;
}
return image;
}
#endif /* WITH_APPLE_IMAGE */