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/*
* The World's Easiest MPEG Player -- a demonstration of the MPEG Library,
* written for Silicon Graphics machines. Demonstrates basic use of
* the MPEG Library, in either true-colour or colour-mapped dithering
* modes. Yes, it is possible to write an MPEG player in less than
* 100 lines of code...
*
* Masochists may port to X (or whatever) if desired.
*
* By Greg Ward, 94/8/15
* modified for colour-mapped modes, March '95.
*/
#include <stdlib.h>
#include <errno.h>
#include <gl.h>
#define BOOLEAN_TYPE_EXISTS
#include "mpeg.h"
int main (int argc, char *argv[])
{
FILE *mpeg;
ImageDesc img;
char *pixels;
Boolean moreframes = TRUE;
Boolean full_color = TRUE;
Boolean loop = TRUE;
if (argc != 2)
{
fprintf (stderr, "Usage: %s mpegfile\n", argv[0]);
exit (1);
}
mpeg = fopen (argv[1], "r");
if (!mpeg)
{
perror (argv[1]);
exit (1);
}
SetMPEGOption (MPEG_DITHER,
(full_color) ? (int) FULL_COLOR_DITHER :
(int) ORDERED_DITHER);
if (!OpenMPEG (mpeg, &img))
{
fprintf (stderr, "OpenMPEG on %s failed\n", argv[1]);
exit (1);
}
pixels = (char *) malloc (img.Size * sizeof(char));
printf ("Movie is %d x %d pixels\n", img.Width, img.Height);
printf ("Required picture rate = %d, required bit rate = %d\n",
img.PictureRate, img.BitRate);
foreground ();
prefsize (img.Width, img.Height);
winopen ("Easy MPEG");
if (full_color) RGBmode ();
pixmode (PM_SIZE, img.PixelSize);
pixmode (PM_TTOB, 1);
gconfig ();
clear ();
if (!full_color)
{
int i;
for (i = 0; i < img.ColormapSize; i++)
{
mapcolor (i,
img.Colormap[i].red,
img.Colormap[i].green,
img.Colormap[i].blue);
}
gflush ();
}
while (loop) /* play the whole movie forever */
{
while (moreframes) /* play frames until the movie ends */
{
moreframes = GetMPEGFrame (pixels);
lrectwrite (0, 0, img.Width-1, img.Height-1,
(unsigned long *) pixels);
}
RewindMPEG (mpeg, &img);
moreframes = TRUE;
}
}
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