// return 1 if okay
static int my_init_mng(PluginInstance *This)
{
mng_retcode rv;
int err;
This->mng = mng_initialize((mng_ptr)This,memallocfunc,memfreefunc,NULL);
//(mng_memalloc) (mng_memfree)
#ifdef MNGPLG_CMS
init_color_management(This);
#endif
err=0;
rv=mng_setcb_openstream (This->mng, callback_openstream ); if(rv) err++;
rv=mng_setcb_closestream (This->mng, callback_closestream ); if(rv) err++;
rv=mng_setcb_readdata (This->mng, callback_readdata ); if(rv) err++;
rv=mng_setcb_processheader (This->mng, callback_processheader); if(rv) err++;
rv=mng_setcb_getcanvasline (This->mng, callback_getcanvasline); if(rv) err++;
rv=mng_setcb_refresh (This->mng, callback_refresh ); if(rv) err++;
rv=mng_setcb_gettickcount (This->mng, callback_gettickcount ); if(rv) err++;
rv=mng_setcb_settimer (This->mng, callback_settimer ); if(rv) err++;
rv=mng_setcb_processtext (This->mng, callback_processtext ); if(rv) err++;
#ifdef MNGPLG_TRACE
rv=mng_setcb_traceproc (This->mng, callback_traceproc ); if(rv) err++;
#endif
if(err) {
warn(This,"Error setting libmng callback functions");
return 0;
}
rv= mng_set_suspensionmode (This->mng,MNG_TRUE);
if(rv) {
warn(This,"Error setting suspension mode");
return 0;
}
// if the web page author provided a bgcolor, use it
if(This->force_bgcolor) {
rv=mng_set_bgcolor (This->mng, This->bg_r, This->bg_g, This->bg_b);
}
#ifdef MNGPLG_TRACE
fprintf(tracefile,"initial readdisplay\n");
#endif
handle_read_error(This, mng_readdisplay(This->mng) );
return 1;
}
static FIBITMAP * DLL_CALLCONV
Load(FreeImageIO *io, fi_handle handle, int page, int flags, void *data) {
mng_handle hmng = NULL;
if (handle != NULL) {
try {
// allocate our stream data structure
mngstuff *mymng = (mngstuff *)data;
// set up the mng decoder for our stream
hmng = mng_initialize(mymng, mymngalloc, mymngfree, MNG_NULL);
if (hmng == MNG_NULL) {
throw "could not initialize libmng";
}
// set the colorprofile, lcms uses this
mng_set_srgb(hmng, MNG_TRUE );
// set white as background color
WORD wRed, wGreen, wBlue;
wRed = wGreen = wBlue = (255 << 8) + 255;
mng_set_bgcolor(hmng, wRed, wGreen, wBlue);
// if PNG Background is available, use it
mng_set_usebkgd(hmng, MNG_TRUE );
// no need to store chunks
mng_set_storechunks(hmng, MNG_FALSE);
// no need to wait: straight reading
mng_set_suspensionmode(hmng, MNG_FALSE);
// set the callbacks
mng_setcb_errorproc(hmng, mymngerror);
mng_setcb_openstream(hmng, mymngopenstream);
mng_setcb_closestream(hmng, mymngclosestream);
mng_setcb_readdata(hmng, mymngreadstream);
mng_setcb_processheader(hmng, mymngprocessheader);
mng_setcb_getcanvasline(hmng, mymnggetcanvasline);
mng_setcb_refresh(hmng, mymngrefresh);
mng_setcb_gettickcount(hmng, mymnggetticks);
mng_setcb_settimer(hmng, mymngsettimer);
// read in the bitmap
mng_readdisplay(hmng);
// read all bitmaps
int retval = MNG_NOERROR;
mng_datap pData = (mng_datap)hmng;
while(pData->bReading) {
retval = mng_display_resume(hmng);
if((retval == MNG_NEEDTIMERWAIT) || (retval == MNG_FUNCTIONINVALID))
break;
}
// temp store the newly created bitmap
FIBITMAP *bitmap = mymng->bitmap;
// cleanup and return the temp stored bitmap
mng_cleanup(&hmng);
return bitmap;
} catch (const char *message) {
FIBITMAP *bitmap = ((mngstuff *)mng_get_userdata(hmng))->bitmap;
if(bitmap) {
FreeImage_Unload(bitmap);
}
mng_cleanup(&hmng);
FreeImage_OutputMessageProc(s_format_id, message);
}
}
return NULL;
}
