bool
CMNGAnimation::Load(const char* filename, IFileSystem& fs)
{
this->~CMNGAnimation();
// open the file
m_file = fs.Open(filename, IFileSystem::read);
if (m_file == NULL) {
return false;
}
// initialize MNG playback
m_stream = mng_initialize(this, CB_Allocate, CB_Free, NULL);
// set all of the callbacks
mng_setcb_openstream(m_stream, CB_OpenStream);
mng_setcb_closestream(m_stream, CB_CloseStream);
mng_setcb_readdata(m_stream, CB_ReadData);
mng_setcb_processheader(m_stream, CB_ProcessHeader);
mng_setcb_gettickcount(m_stream, CB_GetTickCount);
mng_setcb_getcanvasline(m_stream, CB_GetCanvasLine);
mng_setcb_refresh(m_stream, CB_Refresh);
mng_setcb_settimer(m_stream, CB_SetTimer);
// do some reading
if (mng_read(m_stream) != MNG_NOERROR) {
return false;
}
return true;
}
ILboolean iLoadMngInternal()
{
mng_handle mng;
if (iCurImage == NULL) {
ilSetError(IL_ILLEGAL_OPERATION);
return IL_FALSE;
}
mng = mng_initialize(MNG_NULL, mymngalloc, mymngfree, MNG_NULL);
if (mng == MNG_NULL) {
ilSetError(IL_LIB_MNG_ERROR);
return IL_FALSE;
}
// If .mng background is available, use it.
mng_set_usebkgd(mng, MNG_TRUE);
// Set the callbacks.
mng_setcb_errorproc(mng, mymngerror);
mng_setcb_openstream(mng, mymngopenstream);
mng_setcb_closestream(mng, mymngclosestream);
mng_setcb_readdata(mng, (mng_readdata)mymngreadstream);
mng_setcb_gettickcount(mng, mymnggetticks);
mng_setcb_settimer(mng, mymngsettimer);
mng_setcb_processheader(mng, mymngprocessheader);
mng_setcb_getcanvasline(mng, mymnggetcanvasline);
mng_setcb_refresh(mng, mymngrefresh);
mng_read(mng);
mng_display(mng);
return ilFixImage();
}
/**
** Load a MNG
**
** @param name Name of the MNG file
*/
int Mng::Load(const char *name)
{
mng_retcode myretcode;
char buf[PATH_MAX];
LibraryFileName(name, buf, sizeof(buf));
this->name = new_strdup(buf);
handle = mng_initialize(this, my_alloc, my_free, MNG_NULL);
if (handle == MNG_NULL) {
return -1;
}
mng_setcb_openstream(handle, my_openstream);
mng_setcb_closestream(handle, my_closestream);
mng_setcb_readdata(handle, my_readdata);
mng_setcb_processheader(handle, my_processheader);
mng_setcb_processmend(handle, my_processmend);
mng_setcb_getcanvasline(handle, my_getcanvasline);
mng_setcb_refresh(handle, my_refresh);
mng_setcb_gettickcount(handle, my_gettickcount);
mng_setcb_settimer(handle, my_settimer);
mng_setcb_errorproc(handle, my_errorproc);
mng_read(handle);
if (surface && iteration != 0x7fffffff) {
myretcode = mng_display(handle);
}
if (!surface || iteration == 0x7fffffff) {
return -1;
}
return 0;
}
/**
** Load a MNG
**
** @param name Name of the MNG file
*/
int Mng::Load(const std::string &name)
{
this->name = LibraryFileName(name.c_str());
handle = mng_initialize(this, my_alloc, my_free, MNG_NULL);
if (handle == MNG_NULL) {
return -1;
}
mng_setcb_openstream(handle, my_openstream);
mng_setcb_closestream(handle, my_closestream);
mng_setcb_readdata(handle, my_readdata);
mng_setcb_processheader(handle, my_processheader);
mng_setcb_processmend(handle, my_processmend);
mng_setcb_getcanvasline(handle, my_getcanvasline);
mng_setcb_refresh(handle, my_refresh);
mng_setcb_gettickcount(handle, my_gettickcount);
mng_setcb_settimer(handle, my_settimer);
mng_setcb_errorproc(handle, my_errorproc);
mng_read(handle);
if (surface && iteration != 0x7fffffff) {
mng_display(handle);
}
if (!surface || iteration == 0x7fffffff) {
return -1;
}
return 0;
}
static gboolean
gtk_mng_view_init_libmng (GtkMngView * mng_view)
{
FUNCTION_ENTRY();
GtkWidget * widget;
g_return_val_if_fail (IS_GTK_MNG_VIEW (mng_view), FALSE);
if (mng_view->MNG_handle)
mng_cleanup (&mng_view->MNG_handle);
mng_view->MNG_handle = mng_initialize (mng_view,
mng_malloc_callback,
mng_free_callback,
MNG_NULL);
if (mng_view->MNG_handle == MNG_NULL) {
FUNCTION_EXIT();
return FALSE;
}
mng_set_storechunks(mng_view->MNG_handle, MNG_TRUE);
//mng_set_dfltimggamma(mng_view->MNG_handle, 5);
//mng_set_displaygamma(mng_view->MNG_handle, 4);
if (mng_setcb_openstream (mng_view->MNG_handle, mng_open_stream_callback) != MNG_NOERROR ||
mng_setcb_closestream (mng_view->MNG_handle, mng_close_stream_callback) != MNG_NOERROR ||
mng_setcb_readdata (mng_view->MNG_handle, mng_read_data_callback) != MNG_NOERROR ||
mng_setcb_processheader (mng_view->MNG_handle, mng_process_header_callback) != MNG_NOERROR ||
mng_setcb_processmend (mng_view->MNG_handle, mng_process_mend_callback) != MNG_NOERROR ||
mng_setcb_processterm (mng_view->MNG_handle, mng_process_term_callback) != MNG_NOERROR ||
mng_setcb_settimer (mng_view->MNG_handle, mng_set_timer_callback) != MNG_NOERROR ||
mng_setcb_gettickcount (mng_view->MNG_handle, mng_get_tickcount_callback) != MNG_NOERROR ||
mng_setcb_getcanvasline (mng_view->MNG_handle, mng_get_canvas_line_callback) != MNG_NOERROR ||
mng_setcb_getalphaline (mng_view->MNG_handle, mng_get_alpha_line_callback) != MNG_NOERROR ||
mng_setcb_refresh (mng_view->MNG_handle, mng_refresh_callback) != MNG_NOERROR)
{
mng_cleanup (&mng_view->MNG_handle);
FUNCTION_EXIT();
return FALSE;
}
//mng_set_suspensionmode(mng_view->MNG_handle, MNG_TRUE);
mng_set_canvasstyle (mng_view->MNG_handle, MNG_CANVAS_RGB8_A8);
widget = GTK_WIDGET (mng_view);
if (!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
mng_set_bgcolor (mng_view->MNG_handle,
widget->style->bg[GTK_STATE_NORMAL].red,
widget->style->bg[GTK_STATE_NORMAL].green,
widget->style->bg[GTK_STATE_NORMAL].blue);
FUNCTION_EXIT();
return TRUE;
}
//---------------------------------------------------------------------------
bool __fastcall TMainForm::DumpTree( void )
{
mng_handle hMNG;
// let's initialize the library
hMNG = mng_initialize( (mng_ptr)this, Alloc, Free, NULL );
if( !hMNG ) // did that work out ?
{
MNGError( hMNG, "Cannot initialize libmng." );
mng_cleanup( &hMNG ); // Always cleanup the library
MsgBoxStop( "Bye!" );
Application->Terminate(); // Exit now
}
// setup callbacks
if( (mng_setcb_openstream ( hMNG, OpenStream ) != 0) ||
(mng_setcb_closestream ( hMNG, CloseStream ) != 0) ||
(mng_setcb_processheader( hMNG,ProcessHeader ) != 0) ||
(mng_setcb_readdata ( hMNG, FileReadData ) != 0)
)
{
MNGError( hMNG, "Cannot set callbacks for libmng.");
mng_cleanup( &hMNG ); // Always cleanup the library
MsgBoxStop( "Bye!" );
Application->Terminate(); // Exit now
}
else
{
// read the file into memory
if( mng_read( hMNG ) != 0 )
{
// Because we read the whole file in first,
// here is where bad input files first choke !
MNGError( hMNG, "Cannot read the file." );
mng_cleanup( &hMNG ); // Always cleanup the library
return false;
}
else
{
// run through the chunk list
if( mng_iterate_chunks( hMNG, 0, IterateChunks ) != 0 )
{
MNGError( hMNG, "Error Getting Chunk info!" );
mng_cleanup( &hMNG ); // Always cleanup the library
return false; // Errors may occur with bad chunk data
}
}
}
mng_cleanup( &hMNG ); // Always cleanup the library
return true;
}
// 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;
}
bool ImageJngFile::Load (uint8 *iBuffer, size_t iSize)
{
mng_retcode retcode;
const int magicSize = 8;
const char magicMNG[] = "\x8aMNG\x0d\x0a\x1a\x0a";
const char magicJNG[] = "\x8bJNG\x0d\x0a\x1a\x0a";
// check for magic JNG/MNG bytes. If not correct, we can skip
// messing around w/ libmng entirely.
if ((iSize < 8) ||
((memcmp ((void*)iBuffer, (void*)&magicMNG, magicSize)) &&
(memcmp ((void*)iBuffer, (void*)&magicJNG, magicSize))))
{
return false;
}
handle = mng_initialize (mng_ptr(this), cb_alloc,
cb_free, MNG_NULL);
if (!handle)
{
Report (object_reg, CS_REPORTER_SEVERITY_WARNING,
"failed to initialize libmng");
return false;
}
buffer = iBuffer;
bufptr = buffer;
bufferSize = iSize;
if ((mng_setcb_openstream (handle, cb_openstream) != MNG_NOERROR) ||
(mng_setcb_closestream (handle, cb_closestream) != MNG_NOERROR) ||
(mng_setcb_readdata (handle, cb_readdata) != MNG_NOERROR) ||
(mng_setcb_processheader(handle, cb_processheader) != MNG_NOERROR) ||
(mng_setcb_getcanvasline(handle, cb_getcanvasline) != MNG_NOERROR) ||
(mng_setcb_refresh(handle, cb_imagerefresh) != MNG_NOERROR) ||
(mng_setcb_gettickcount(handle, cb_gettickcount) != MNG_NOERROR) ||
(mng_setcb_settimer(handle, cb_settimer) != MNG_NOERROR))
{
ReportLibmngError (object_reg, handle, "failed to set libmng callbacks");
mng_cleanup (&handle);
return false;
}
retcode = mng_read (handle);
if (retcode != MNG_NOERROR)
{
if (retcode != MNG_INVALIDSIG) // maybe its just not an jng/mng...
ReportLibmngError (object_reg, handle, "failed to read data");
mng_cleanup (&handle);
return false;
}
// Don't read PNGs
if (mng_get_sigtype (handle) == mng_it_png)
{
delete[] NewImage;
mng_cleanup (&handle);
return false;
}
// Even on still images, libmng issues timer requests.
// so, as long as the requests are 'immediate' we continue
// displaying. If a delay is requested we end loading.
timer = 2;
retcode = mng_display (handle);
while ((retcode == MNG_NEEDTIMERWAIT) && (timer <= 1))
{
retcode = mng_display_resume (handle);
}
if ((retcode != MNG_NOERROR) && (retcode != MNG_NEEDTIMERWAIT))
{
ReportLibmngError (object_reg, handle, "failed to display data");
mng_cleanup (&handle);
return false;
}
doWait = (retcode == MNG_NEEDTIMERWAIT);
animated = doWait;
if (NewImage)
{
csRGBpixel *rgbImage =
csPackRGBA::CopyUnpackRGBAtoRGBpixel (NewImage, Width*Height);
ConvertFromRGBA (rgbImage);
// Subsequent images may contain alpha, so don't check
if (!doWait) CheckAlpha();
}
if (mng_get_sigtype (handle) != mng_it_mng)
{
delete[] NewImage; NewImage = 0;
mng_cleanup (&handle);
handle = 0;
}
return true;
}
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;
}
/**
* \brief MPlayer callback: Open MNG stream.
* \param[in] demuxer demuxer structure
* \return demuxer structure on success, \p NULL on error
*/
static demuxer_t * demux_mng_open(demuxer_t * demuxer)
{
mng_priv_t * mng_priv;
mng_handle h_mng;
mng_retcode mng_ret;
sh_video_t * sh_video;
// create private data structure
mng_priv = calloc(1, sizeof(mng_priv_t));
//stream pointer into private data
mng_priv->stream = demuxer->stream;
// initialize MNG image instance
h_mng = mng_initialize((mng_ptr)mng_priv, demux_mng_alloc,
demux_mng_free, MNG_NULL);
if (!h_mng) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"demux_mng: could not initialize MNG image instance\n");
free(mng_priv);
return NULL;
}
// MNG image handle into private data
mng_priv->h_mng = h_mng;
// set required MNG callbacks
if (mng_setcb_openstream(h_mng, demux_mng_openstream) ||
mng_setcb_closestream(h_mng, demux_mng_closestream) ||
mng_setcb_readdata(h_mng, demux_mng_readdata) ||
mng_setcb_processheader(h_mng, demux_mng_processheader) ||
mng_setcb_getcanvasline(h_mng, demux_mng_getcanvasline) ||
mng_setcb_refresh(h_mng, demux_mng_refresh) ||
mng_setcb_gettickcount(h_mng, demux_mng_gettickcount) ||
mng_setcb_settimer(h_mng, demux_mng_settimer) ||
mng_set_canvasstyle(h_mng, MNG_CANVAS_RGBA8)) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"demux_mng: could not set MNG callbacks\n");
mng_cleanup(&h_mng);
free(mng_priv);
return NULL;
}
// start reading MNG data
mng_ret = mng_read(h_mng);
if (mng_ret) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"demux_mng: could not start reading MNG data: "
"mng_retcode %d\n", mng_ret);
mng_cleanup(&h_mng);
free(mng_priv);
return NULL;
}
// check that MNG header is processed now
if (!mng_priv->header_processed) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"demux_mng: internal error: header not processed\n");
mng_cleanup(&h_mng);
free(mng_priv);
return NULL;
}
// create a new video stream header
sh_video = new_sh_video(demuxer, 0);
// Make sure the demuxer knows about the new video stream header
// (even though new_sh_video() ought to take care of it).
// (Thanks to demux_gif.c for this.)
demuxer->video->sh = sh_video;
// Make sure that the video demuxer stream header knows about its
// parent video demuxer stream (this is getting wacky), or else
// video_read_properties() will choke.
// (Thanks to demux_gif.c for this.)
sh_video->ds = demuxer->video;
// set format of pixels in video packets
sh_video->format = mmioFOURCC(32, 'B', 'G', 'R');
// set framerate to some value (MNG does not have a fixed framerate)
sh_video->fps = 5.0f;
sh_video->frametime = 1.0f / sh_video->fps;
// set video frame parameters
sh_video->bih = malloc(sizeof(*sh_video->bih));
sh_video->bih->biCompression = sh_video->format;
sh_video->bih->biWidth = mng_priv->width;
sh_video->bih->biHeight = mng_priv->height;
sh_video->bih->biBitCount = 32;
sh_video->bih->biPlanes = 1;
// Set start time to something > 0.
// - This is required for the variable frame time mechanism
// (GIF, MATROSKA, MNG) in video.c to work for the first frame.
sh_video->ds->pts = MNG_START_PTS;
// set private data in demuxer and return demuxer
demuxer->priv = mng_priv;
return demuxer;
}
static bool sReadMNG(Stream &stream, GBitmap *bitmap)
{
PROFILE_SCOPE(sReadMNG);
mngstuff mnginfo;
dMemset(&mnginfo, 0, sizeof(mngstuff));
mng_handle mng = mng_initialize(&mnginfo, mngMallocFn, mngFreeFn, MNG_NULL);
if(mng == NULL)
return false;
// setup the callbacks
mng_setcb_errorproc(mng, mngFatalErrorFn);
mng_setcb_openstream(mng, mngOpenDataFn);
mng_setcb_closestream(mng, mngCloseDataFn);
mng_setcb_readdata(mng, mngReadDataFn);
mng_setcb_processheader(mng, mngProcessHeaderFn);
mng_setcb_getcanvasline(mng, mngCanvasLineFn);
mng_setcb_refresh(mng, mngRefreshFn);
mng_setcb_gettickcount(mng, mngGetTicksFn);
mng_setcb_settimer(mng, mngSetTimerFn);
mnginfo.image = bitmap;
mnginfo.stream = &stream;
mng_read(mng);
mng_display(mng);
// hacks :(
// libmng doesn't support returning data in gray/gray alpha format,
// so we grab as RGB/RGBA and just cut off the g and b
mng_uint8 colorType = mng_get_colortype(mng);
switch(colorType)
{
case MNG_COLORTYPE_GRAY:
case MNG_COLORTYPE_JPEGGRAY:
{
GBitmap temp(*bitmap);
bitmap->deleteImage();
bitmap->allocateBitmap(temp.getWidth(), temp.getHeight(), false, GFXFormatA8);
// force getColor to read in in the same color value for each channel
// since the gray colortype has the real alpha in the first channel
temp.setFormat( GFXFormatA8 );
ColorI color;
for(U32 row = 0; row < bitmap->getHeight(); row++)
{
for(U32 col = 0; col < bitmap->getWidth(); col++)
{
temp.getColor(col, row, color);
bitmap->setColor(col, row, color);
}
}
}
break;
}
mng_cleanup(&mng);
// Check this bitmap for transparency
bitmap->checkForTransparency();
return true;
}
int main(int argc, char *argv[])
{
int fbdev,c,option_index;
unsigned int alpha;
struct fb_var_screeninfo var;
/* Check which console we're running on */
init_consoles();
/* allocate our stream data structure */
mng = (mngstuff *) calloc(1, sizeof(*mng));
if (mng == NULL) {
fprintf(stderr, "could not allocate stream structure.\n");
exit(0);
}
alpha = 100;
mng->alpha = 100;
mng->fbx = 15;
mng->fby = 15;
mng->background = NULL;
while (1) {
static struct option long_options[] = {
{"help", 0, 0, 'h'},
{"verbose", 0, 0, 'v'},
{"alpha", 1, 0, 'a'},
{"buffered", 0, 0, 'b'},
{"signal", 0, 0, 's'},
{"delta", 0, 0, 'd'},
{"position", 0, 0, 'p'},
{"version", 0, 0, 'V'},
{"start-console",0,0,'S'},
{"console",1,0,'c'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "a:x:y:bh?vsd:pVSc:",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'a':
alpha = atoi(optarg);
if (alpha > 100)
alpha = 100;
mng->alpha = alpha;
break;
case 'x':
mng->fbx = atoi(optarg);
break;
case 'y':
mng->fby = atoi(optarg);
break;
case 'd':
delta = atoi(optarg);
break;
case '?':
case 'h':
usage(argv[0]);
exit(0);
case 'v':
verbose = 1;
break;
case 's':
waitsignal = 1;
break;
case 'b':
buffered = 1;
break;
case 'p':
dynpos = 1;
break;
case 'V':
version();
exit(0);
case 'c':
start_console=atoi(optarg);
case 'S':
sconly=1;
break;
default:
break;
}
}
if (optind >= argc) {
printf("Which files do you want to play?\n");
exit(0);
}
//init_consoles();
/* Initialize framebuffer */
fbdev = open("/dev/fb0", O_RDWR);
if (fbdev < 0) {
fprintf(stderr, "error while opening framebuffer.\n");
exit(fbdev);
}
ioctl(fbdev, FBIOGET_VSCREENINFO, &var);
mng->fbwidth = var.xres;
mng->fbheight = var.yres;
mng->fbbpp = var.bits_per_pixel;
mng->display =
mmap(NULL, var.xres * var.yres * (var.bits_per_pixel >> 3),
PROT_WRITE | PROT_READ, MAP_SHARED, fbdev, 0);
/* arrange to call the shutdown routine before we exit */
atexit(&cleanup);
while (optind < argc) {
// leftover arguements are filenames.
mng->filename = argv[optind++];
/* set up the mng decoder for our stream */
mng->mng = mng_initialize(mng, mngalloc, mngfree, MNG_NULL);
if (mng->mng == MNG_NULL) {
fprintf(stderr, "could not initialize libmng.\n");
exit(1);
}
/* set the callbacks */
mng_setcb_errorproc(mng->mng, mngerror);
mng_setcb_openstream(mng->mng, mngopenstream);
mng_setcb_closestream(mng->mng, mngclosestream);
mng_setcb_readdata(mng->mng, mngreadstream);
mng_setcb_gettickcount(mng->mng, mnggetticks);
mng_setcb_settimer(mng->mng, mngsettimer);
mng_setcb_processheader(mng->mng, mngprocessheader);
mng_setcb_getcanvasline(mng->mng, mnggetcanvasline);
mng_setcb_refresh(mng->mng, mngrefresh);
/* FIXME: should check for errors here */
signal(SIGINT, sigint_handler);
signal(SIGTERM, sigterm_handler);
mng_readdisplay(mng->mng);
/* loop though the frames */
while (mng->delay && run) {
mdelay(mng->delay);
mng->delay = 0;
mng_display_resume(mng->mng);
if (run == 2) {
if (mng->alpha == 0)
run = 0;
mng->alpha -= delta;
if (mng->alpha < 0)
mng->alpha = 0;
}
}
if (waitsignal && optind < argc) {
signal(SIGUSR1, sigusr1_handler);
run = 1;
while (run) {
sleep(2);
}
}
memset(mng->copybuffer, 0,
4 * mng->width * mng->height);
run = 1;
mng->alpha = alpha;
if (optind == argc) { /* last file */
restore_area();
}
}
/* cleanup and quit */
return mngquit(mng->mng);
}