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
29static unsigned int mem_get_le32(const unsigned char *mem) {
30    return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]);
31}
32
33static 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
45int 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