ceph/src/isa-l/igzip/igzip_sync_flush_example.c

   1 /**********************************************************************
   2   Copyright(c) 2011-2016 Intel Corporation All rights reserved.
   3
   4   Redistribution and use in source and binary forms, with or without
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   8       notice, this list of conditions and the following disclaimer.
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  15       from this software without specific prior written permission.
  16
  17   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  20   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  27   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 **********************************************************************/
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <assert.h>
  33 #include "igzip_lib.h"
  34
  35 #define BUF_SIZE 8 * 1024
  36
  37 struct isal_zstream stream;
  38
  39 int main(int argc, char *argv[])
  40 {
  41         uint8_t inbuf[BUF_SIZE], outbuf[BUF_SIZE];
  42         FILE *in, *out;
  43
  44         if (argc != 3) {
  45                 fprintf(stderr, "Usage: igzip_sync_flush_example infile outfile\n");
  46                 exit(0);
  47         }
  48         in = fopen(argv[1], "rb");
  49         if (!in) {
  50                 fprintf(stderr, "Can't open %s for reading\n", argv[1]);
  51                 exit(0);
  52         }
  53         out = fopen(argv[2], "wb");
  54         if (!out) {
  55                 fprintf(stderr, "Can't open %s for writing\n", argv[2]);
  56                 exit(0);
  57         }
  58
  59         printf("igzip_sync_flush_example\nWindow Size: %d K\n", HIST_SIZE);
  60         fflush(0);
  61
  62         isal_deflate_init(&stream);
  63         stream.end_of_stream = 0;
  64         stream.flush = SYNC_FLUSH;
  65
  66         do {
  67                 if (stream.internal_state.state == ZSTATE_NEW_HDR) {
  68                         stream.avail_in = (uint32_t) fread(inbuf, 1, BUF_SIZE, in);
  69                         stream.end_of_stream = feof(in);
  70                         stream.next_in = inbuf;
  71                 }
  72                 do {
  73                         stream.avail_out = BUF_SIZE;
  74                         stream.next_out = outbuf;
  75                         isal_deflate(&stream);
  76                         fwrite(outbuf, 1, BUF_SIZE - stream.avail_out, out);
  77                 } while (stream.avail_out == 0);
  78
  79         } while (stream.internal_state.state != ZSTATE_END);
  80
  81         fclose(out);
  82         fclose(in);
  83
  84         printf("End of igzip_sync_flush_example\n\n");
  85         return 0;
  86 }