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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 /*
     13 @*INTRODUCTION
     14  */
     15 #include <stdio.h>
     16 #include <stdlib.h>
     17 #include <stdarg.h>
     18 #include <string.h>
     19 #define VPX_CODEC_DISABLE_COMPAT 1
     20 #include "vpx/vpx_decoder.h"
     21 #include "vpx/vp8dx.h"
     22 #define interface (vpx_codec_vp8_dx())
     23 @EXTRA_INCLUDES
     24 
     25 
     26 #define IVF_FILE_HDR_SZ  (32)
     27 #define IVF_FRAME_HDR_SZ (12)
     28 
     29 static unsigned int mem_get_le32(const unsigned char *mem) {
     30     return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]);
     31 }
     32 
     33 static void die(const char *fmt, ...) {
     34     va_list ap;
     35 
     36     va_start(ap, fmt);
     37     vprintf(fmt, ap);
     38     if(fmt[strlen(fmt)-1] != '\n')
     39         printf("\n");
     40     exit(EXIT_FAILURE);
     41 }
     42 
     43 @DIE_CODEC
     44 
     45 int main(int argc, char **argv) {
     46     FILE            *infile, *outfile;
     47     vpx_codec_ctx_t  codec;
     48     int              flags = 0, frame_cnt = 0;
     49     unsigned char    file_hdr[IVF_FILE_HDR_SZ];
     50     unsigned char    frame_hdr[IVF_FRAME_HDR_SZ];
     51     unsigned char    frame[256*1024];
     52     vpx_codec_err_t  res;
     53 @@@@EXTRA_VARS
     54 
     55     (void)res;
     56     /* Open files */
     57 @@@@USAGE
     58     if(!(infile = fopen(argv[1], "rb")))
     59         die("Failed to open %s for reading", argv[1]);
     60     if(!(outfile = fopen(argv[2], "wb")))
     61         die("Failed to open %s for writing", argv[2]);
     62 
     63     /* Read file header */
     64     if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ
     65          && file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I'
     66          && file_hdr[3]=='F'))
     67         die("%s is not an IVF file.", argv[1]);
     68 
     69     printf("Using %s\n",vpx_codec_iface_name(interface));
     70 @@@@DEC_INIT
     71 
     72     /* Read each frame */
     73     while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) {
     74         int               frame_sz = mem_get_le32(frame_hdr);
     75         vpx_codec_iter_t  iter = NULL;
     76         vpx_image_t      *img;
     77 
     78 
     79         frame_cnt++;
     80         if(frame_sz > sizeof(frame))
     81             die("Frame %d data too big for example code buffer", frame_sz);
     82         if(fread(frame, 1, frame_sz, infile) != frame_sz)
     83             die("Frame %d failed to read complete frame", frame_cnt);
     84 
     85 @@@@@@@@PRE_DECODE
     86 @@@@@@@@DECODE
     87 
     88         /* Write decoded data to disk */
     89 @@@@@@@@GET_FRAME
     90             unsigned int plane, y;
     91 
     92 @@@@@@@@@@@@PROCESS_DX
     93         }
     94     }
     95     printf("Processed %d frames.\n",frame_cnt);
     96 @@@@DESTROY
     97 
     98     fclose(outfile);
     99     fclose(infile);
    100     return EXIT_SUCCESS;
    101 }
    102