filename=Filename;
passthru=ppm::New((tmp_dir+"temp.ppm").c_str());
paramfile=NULL;
-
+
}
bsd_mpeg1::~bsd_mpeg1()
bsd_mpeg1::set_rend_desc(RendDesc *given_desc)
{
if(paramfile)
- fclose(paramfile);
-
-
+ fclose(paramfile);
+
+
paramfile=fopen((tmp_dir+"temp.param").c_str(),"wt");
int bitrate=150; // kbytes per second
int buffer_drift=50; // bitrate drift (in kbytes per second)
-
+
bitrate*=8*1024;
buffer_drift*=8*1024;
-
+
fprintf(paramfile,
"PATTERN IBBPBBPBBPBBPBBP\n"
"OUTPUT %s\n"
"BUFFER_SIZE %d\n"
,filename.c_str(),bitrate,buffer_drift);
float fps=given_desc->get_frame_rate();
-
+
// Valid framerates:
// 23.976, 24, 25, 29.97, 30, 50 ,59.94, 60
-
+
if(fps <24.0)
{
fprintf(paramfile,"FRAME_RATE 23.976\n");
fprintf(paramfile,"FRAME_RATE 59.94\n");
given_desc->set_frame_rate(59.94);
}
-
+
// Make sure that the width and height
// are multiples of 8
given_desc->set_w((given_desc->get_w()+4)/8*8);
given_desc->set_h((given_desc->get_h()+4)/8*8);
-
+
if(!passthru->set_rend_desc(given_desc))
return false;
-
+
desc=*given_desc;
fprintf(paramfile,
fclose(paramfile);
paramfile=NULL;
-
+
return true;
}