test-jpeg.c

   1 #include "gstsparrow.h"
   2 #include "sparrow.h"
   3 #include <string.h>
   4 #include <math.h>
   5 #include <sys/time.h>
   6
   7 #include <stdio.h>
   8
   9 //#include "jpeg_src.c"
  10
  11 static const int INSIZE = 100000;
  12 static const int OUTSIZE = 800 * 600 * 4;
  13 static const char *FN_IN = "test.jpg";
  14 static const char *FN_OUT = "test.ppm";
  15 static const int cycles = 100;
  16
  17 int main(int argc, char **argv)
  18 {
  19   guint8* inbuffer = malloc_aligned_or_die(INSIZE);
  20   guint8* outbuffer = malloc_aligned_or_die(OUTSIZE);
  21
  22   FILE *in = fopen(FN_IN, "r");
  23   int size = fread(inbuffer, INSIZE, 1, in);
  24
  25   struct timeval tv1, tv2;
  26   guint32 t;
  27   int width, height;
  28
  29   GstSparrow sparrow;
  30   init_jpeg_src(&sparrow);
  31
  32   gettimeofday(&tv1, NULL);
  33
  34   for (int i = 0; i < cycles; i++){
  35     decompress_buffer(sparrow.cinfo, inbuffer, size, outbuffer,
  36         &width, &height);
  37   }
  38
  39   gettimeofday(&tv2, NULL);
  40   t = ((tv2.tv_sec - tv1.tv_sec) * 1000000 +
  41       tv2.tv_usec - tv1.tv_usec);
  42   printf("average of %d took %u microseconds (%0.5f of a frame)\n",
  43       cycles, t / cycles, (double)t * (25.0 / 1000000.0 / cycles));
  44
  45
  46   sparrow_format rgb;
  47   rgb.rshift = 24;
  48   rgb.gshift = 16;
  49   rgb.bshift = 8;
  50
  51   ppm_dump(&rgb, outbuffer, width, height, FN_OUT);
  52
  53   finalise_jpeg_src(&sparrow);
  54
  55 }
  56