int calculateVirtualStreamPos(struct VirtualStream * stream,ObjectIDHandler ObjID,unsigned int timeAbsMilliseconds,float * pos)
{
if (stream==0) { fprintf(stderr,"calculateVirtualStreamPos called with null stream\n"); return 0; }
if (stream->object==0) { fprintf(stderr,"calculateVirtualStreamPos called with null object array\n"); return 0; }
if (stream->numberOfObjects<=ObjID) { fprintf(stderr,"calculateVirtualStreamPos ObjID %u is out of bounds (%u)\n",ObjID,stream->numberOfObjects); return 0; }
if (stream->object[ObjID].frame == 0 ) { fprintf(stderr,"calculateVirtualStreamPos ObjID %u does not have a frame array allocated\n",ObjID); return 0; }
if (stream->object[ObjID].numberOfFrames == 0 ) { fprintf(stderr,"calculateVirtualStreamPos ObjID %u has 0 frames\n",ObjID); return 0; }
if (stream->autoRefresh != 0 )
{
//Check for refreshed version ?
if (stream->autoRefresh < timeAbsMilliseconds-stream->lastRefresh )
{
unsigned long current_size = getFileSize(stream->filename);
if (current_size != stream->fileSize)
{
refreshVirtualStream(stream);
stream->lastRefresh = timeAbsMilliseconds;
}
}
}
unsigned int FrameIDToReturn = 0;
unsigned int FrameIDLast = 0;
unsigned int FrameIDNext = 0;
/*!OK , Two major cases here..! The one is a simple Next frame getter , the second is a more complicated interpolated frame getter..! */
if ( (stream->object[ObjID].MAX_numberOfFrames == 0 ) )
{
fillPosWithNull(stream,ObjID,pos);
return 1;
} else
if ( (stream->ignoreTime) || (stream->object[ObjID].MAX_numberOfFrames == 1 ) )
{
//We might want to ignore time and just return frame after frame on each call!
//Also if we only got one frame for the object there is no point in trying to interpolate time etc.. so just handle things here..
if ( stream->object[ObjID].lastFrame +1 >= stream->object[ObjID].MAX_numberOfFrames ) { stream->object[ObjID].lastFrame = 0; }
FrameIDToReturn = stream->object[ObjID].lastFrame;
++stream->object[ObjID].lastFrame;
fillPosWithFrame(stream,ObjID,FrameIDToReturn,pos);
FrameIDLast = FrameIDToReturn;
FrameIDNext = FrameIDToReturn+1;
if ( FrameIDNext >= stream->object[ObjID].numberOfFrames )
{
FrameIDNext = 0;
}
return 1;
} /*!END OF SIMPLE FRAME GETTER*/
else
{ /*!START OF INTERPOLATED FRAME GETTER*/
//This is the case when we respect time , we will pick two frames and interpolate between them
if ( timeAbsMilliseconds > stream->object[ObjID].MAX_timeOfFrames )
{
//This means we have passed the last frame.. so lets find out where we really are..
timeAbsMilliseconds = timeAbsMilliseconds % stream->object[ObjID].MAX_timeOfFrames;
//timeAbsMilliseconds should contain a valid value now somewhere from 0->MAX_timeOfFrames
}
#if PRINT_DEBUGGING_INFO
fprintf(stderr,"Object %u has %u frames , lets search where we are \n",ObjID,stream->object[ObjID].numberOfFrames);
#endif
//We scan all the frames to find out the "last one" and the "next one"
unsigned int i =0;
for ( i=0; i <stream->object[ObjID].MAX_numberOfFrames-1; i++ )
{
if (( stream->object[ObjID].frame[i].time <= timeAbsMilliseconds )
&&
( timeAbsMilliseconds <= stream->object[ObjID].frame[i+1].time ) )
{
//This is the "next" frame!
FrameIDLast = i;
FrameIDNext = i+1;
//This should be handled by raw response to zero elemetn :P
break;
}
}
//We now have our Last and Next frame , all that remains is extracting the
//interpolated time between them..!
return fillPosWithInterpolatedFrame(stream,ObjID,pos,FrameIDLast,FrameIDNext,timeAbsMilliseconds);
} /*!END OF INTERPOLATED FRAME GETTER*/
return 0;
}
int calculateVirtualStreamPos(
struct VirtualStream * stream,
ObjectIDHandler ObjID,
unsigned int timeAbsMilliseconds,
float * pos,
float * joints,
float * scaleX,
float * scaleY,
float * scaleZ
)
{
if (stream==0) { fprintf(stderr,"calculateVirtualStreamPos called with null stream\n"); return 0; }
if (stream->object==0) { fprintf(stderr,"calculateVirtualStreamPos called with null object array\n"); return 0; }
if (stream->numberOfObjects<=ObjID) { fprintf(stderr,"calculateVirtualStreamPos ObjID %u is out of bounds (%u)\n",ObjID,stream->numberOfObjects); return 0; }
if ( (ObjID==0) && (stream->object[ObjID].frame == 0 ) ) { /*Special case with non declared cameras , it is ok , dont spam for every frame..! */ return 0; }
else
if (stream->object[ObjID].frame == 0 ) { fprintf(stderr,"calculateVirtualStreamPos ObjID %u does not have a frame array allocated\n",ObjID); return 0; }
if ( (ObjID==0) && (stream->object[ObjID].numberOfFrames == 0 ) ) { /*Special case with non declared cameras , it is ok , dont spam for every frame..! */ return 0; }
else
if (stream->object[ObjID].numberOfFrames == 0 ) { fprintf(stderr,"calculateVirtualStreamPos ObjID %u has 0 frames\n",ObjID); return 0; }
if (
(stream->autoRefresh != 0 ) ||
(stream->autoRefreshForce)
)
{
//Check for refreshed version ?
if (
(stream->autoRefreshForce) ||
(stream->autoRefresh < timeAbsMilliseconds-stream->lastRefresh )
)
{
unsigned long current_size = getFileSize(stream->filename);
if (
(current_size != stream->fileSize) ||
(stream->autoRefreshForce)
)
{
refreshVirtualStream(stream,stream->associatedModelList);
stream->lastRefresh = timeAbsMilliseconds;
stream->autoRefreshForce=0;
}
}
}
unsigned int FrameIDToReturn = 0;
unsigned int FrameIDLast = 0;
unsigned int FrameIDNext = 0;
/*!OK , Two major cases here..! The one is a simple Next frame getter , the second is a more complicated interpolated frame getter..! */
if ( (stream->object[ObjID].MAX_numberOfFrames == 0 ) )
{
fprintf(stderr,"Returning Null position for ObjID %u\n",ObjID);
fillPosWithNull(/*stream,ObjID,*/pos,scaleX,scaleY,scaleZ);
return 1;
} else
if ( (stream->ignoreTime) || (stream->object[ObjID].MAX_numberOfFrames == 1 ) || ((stream->alwaysShowLastFrame)) )
{
//We might want to ignore time and just return frame after frame on each call!
//Also if we only got one frame for the object there is no point in trying to interpolate time etc.. so just handle things here..
if ( stream->object[ObjID].lastFrame +1 >= stream->object[ObjID].MAX_numberOfFrames ) { stream->object[ObjID].lastFrame = 0; }
FrameIDToReturn = stream->object[ObjID].lastFrame;
++stream->object[ObjID].lastFrame;
if (stream->alwaysShowLastFrame)
{
if (stream->object[ObjID].numberOfFrames>0)
{
FrameIDToReturn = stream->object[ObjID].numberOfFrames-1;
//fprintf(stderr,"Always showing last frame ( %u ) , F7 to change\n",FrameIDToReturn);
}
}
//fprintf(stderr,"Simple Getter ObjID %u Frame %u\n",ObjID,FrameIDToReturn);
fillPosWithFrame(
stream,
ObjID,
FrameIDToReturn,
pos,
joints,
scaleX,
scaleY,
scaleZ
);
//fprintf(stderr,"fillPosWithFrame %u => ( %0.2f %0.2f %0.2f , %0.2f %0.2f %0.2f)\n",FrameIDToReturn,pos[0],pos[1],pos[2],pos[3],pos[4],pos[5]);
FrameIDLast = FrameIDToReturn;
FrameIDNext = FrameIDToReturn+1;
if ( FrameIDNext >= stream->object[ObjID].numberOfFrames )
{ //We 've reached the end of the stream so the last frame should truncate 0
stream->object[ObjID].lastFrame=0;
}
return 1;
} /*!END OF SIMPLE FRAME GETTER*/
else
{ /*!START OF INTERPOLATED FRAME GETTER*/
//fprintf(stderr,"Interpolated Getter ObjID %u Frame %u\n",ObjID,FrameIDToReturn);
//fprintf(stderr,"interpolated position for ObjID %u\n",ObjID);
//This is the case when we respect time , we will pick two frames and interpolate between them
if ( timeAbsMilliseconds > stream->object[ObjID].MAX_timeOfFrames )
{
//This means we have passed the last frame.. so lets find out where we really are..
if (stream->object[ObjID].MAX_timeOfFrames == 0 ) {
//If max time of frames is 0 then our time is also zero ( since it never goes over max )
//fprintf(stderr,"timeAbsMilliseconds can not be something more than zero");
timeAbsMilliseconds=0;
} else
{ timeAbsMilliseconds = timeAbsMilliseconds % stream->object[ObjID].MAX_timeOfFrames; }
//timeAbsMilliseconds should contain a valid value now somewhere from 0->MAX_timeOfFrames
}
#if PRINT_DEBUGGING_INFO
fprintf(stderr,"Object %u has %u frames , lets search where we are \n",ObjID,stream->object[ObjID].numberOfFrames);
#endif
//We scan all the frames to find out the "last one" and the "next one"
unsigned int i =0;
for ( i=0; i <stream->object[ObjID].MAX_numberOfFrames-1; i++ )
{
if (( stream->object[ObjID].frame[i].time <= timeAbsMilliseconds )
&&
( timeAbsMilliseconds <= stream->object[ObjID].frame[i+1].time ) )
{
//This is the "next" frame!
FrameIDLast = i;
FrameIDNext = i+1;
//This should be handled by raw response to zero elemetn :P
break;
}
}
//We now have our Last and Next frame , all that remains is extracting the
//interpolated time between them..!
return fillPosWithInterpolatedFrame(
stream,
ObjID,
pos,
joints,
scaleX,
scaleY,
scaleZ,
FrameIDLast,
FrameIDNext,
timeAbsMilliseconds
);
} /*!END OF INTERPOLATED FRAME GETTER*/
return 0;
}