int ZimHeight(TagTable *image)
{
ImVfb *vfb;
TagEntryQValue(TagTableQDirect(image,"image vfb", 0), &vfb);
return ImVfbQHeight(vfb);
}
TagTable *ParamImSeqNextImageFromParam(ParamImSeq *self)
{
const char *str;
char *ext;
TagTable *nextImage = NULL, *unusedImage;
int mpegSkipNum;
if (self->mpeg)
{
if (MpegDecoderMoreFrames(self->mpeg))
{
nextImage = MpegDecoderNextImage(self->mpeg);
if (self->skipFields)
{
sprintf(self->currentImageFilename, "%s%.06db",MpegDecoderCurrentFilename(self->mpeg),MpegDecoderBitstreamFrameNum(self->mpeg));
}
else
{
sprintf(self->currentImageFilename, "%s%.06d",MpegDecoderCurrentFilename(self->mpeg),MpegDecoderBitstreamFrameNum(self->mpeg));
}
if (self->mpegSkipNum > 1)
{ // skip the required number of images so we're primed for the next pass
mpegSkipNum = self->mpegSkipNum -1;
while (mpegSkipNum--)
{
unusedImage = MpegDecoderNextImage(self->mpeg);
ZimFree(unusedImage);
}
}
return nextImage;
}
else
{
MpegDecoderFree(self->mpeg);
self->mpeg = NULL;
}
}
if (ParamMoreFrames(self->param) == YES)
{
str = ParamGetNextImageFilename(self->param);
}
else
{
return NULL;
}
if ((str == NULL) || (str[0] == '\0'))
{
return NULL;
}
else
{
strcpy(self->currentImageFilename, str);
}
if( (ext = strstr(self->currentImageFilename , ".mpg")) || (ext = strstr(self->currentImageFilename, ".m2v")))
{
char *margv[] =
{
"mpegstream", "-b", NULL, "-r", "-o6", "-v0", NULL, NULL
};
int margc = 6;
char *fn;
char *frameNum;
self->mpegFirstFrame = 0;
self->mpegLastFrame = 999999;
self->mpegSkipNum = 1;
if (ext[4] != '\0')
{
ParamGetCurrentRange(self->param, &self->mpegFirstFrame, &self->mpegLastFrame, &self->mpegSkipNum ,YES);
if (self->mpegLastFrame ==999999) //we didn't have a range
{
self->mpegLastFrame = atoi(&ext[4]); //use the number by itself, only one frame
}
}
fn = strdup(self->currentImageFilename);
frameNum = strrchr(fn, '.')+4;
*frameNum = '\0';//remove frame number so mpeg object can open the file
margv[2] = fn;
if (! self->skipFields) //specify frame flag
{
margv[margc++] = "-f";
}
self->mpeg = MpegDecoderNew(margc, margv, self->mpegFirstFrame, self->mpegLastFrame);
return ParamImSeqNextImage(self);/*in case it's an empty mpg...*/
}
else
{
char *secondFilename,firstFilename[MAXPATHLEN+1];
TagTable *image1tt ;
ImVfb *img, *image1;
int fields;
if (!(secondFilename= strchr(self->currentImageFilename,'\n')))
{ //one filename, no compositing
nextImage = ZimImageTagTableFromFile(self->currentImageFilename, "");
}
else
{
strncpy(firstFilename,self->currentImageFilename,secondFilename-self->currentImageFilename);
firstFilename[secondFilename-self->currentImageFilename]='\0';
secondFilename++;//point past the \n
image1tt = ZimImageTagTableFromFile(firstFilename, "");
nextImage = ZimImageTagTableFromFile(secondFilename, "");//result will be in here
TagEntryQValue(TagTableQDirect(image1tt, "image vfb", 0), &image1);
TagEntryQValue(TagTableQDirect(nextImage, "image vfb", 0), &img);
//image is the composite of those two
fields = IMRED | IMGREEN | IMBLUE;
if (ImVfbQFields(img) && IMVFBALPHA)
{
fields |= IMALPHA;
}
ImVfbComp(image1, 0, 0, ImVfbQWidth(img), ImVfbQHeight(img), fields, IMCOMPOVER, img, 0, 0);
//free image1tt, it's not needed any more
ZimFree(image1tt);
}
}
return nextImage;
}
