/* *  Copyright (c) 2010 The VP8 project authors. All Rights Reserved. * *  Use of this source code is governed by a BSD-style license *  that can be found in the LICENSE file in the root of the source *  tree. An additional intellectual property rights grant can be found *  in the file PATENTS.  All contributing project authors may *  be found in the AUTHORS file in the root of the source tree. */  /*@*INTRODUCTION */#include <stdio.h>#include <stdlib.h>#include <stdarg.h>#include <string.h>#define VPX_CODEC_DISABLE_COMPAT 1#include "vpx/vpx_decoder.h"#include "vpx/vp8dx.h"#define interface (&vpx_codec_vp8_dx_algo)@EXTRA_INCLUDES  #define IVF_FILE_HDR_SZ  (32)#define IVF_FRAME_HDR_SZ (12) static unsigned int mem_get_le32(const unsigned char *mem) {    return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]);} static void die(const char *fmt, ...) {    va_list ap;     va_start(ap, fmt);    vprintf(fmt, ap);    if(fmt[strlen(fmt)-1] != '\n')        printf("\n");    exit(EXIT_FAILURE);} @DIE_CODEC int main(int argc, char **argv) {    FILE            *infile, *outfile;    vpx_codec_ctx_t  codec;    int              flags = 0, frame_cnt = 0;    unsigned char    file_hdr[IVF_FILE_HDR_SZ];    unsigned char    frame_hdr[IVF_FRAME_HDR_SZ];    unsigned char    frame[256*1024];    vpx_codec_err_t  res;@@@@EXTRA_VARS     (void)res;    /* Open files */@@@@USAGE    if(!(infile = fopen(argv[1], "rb")))        die("Failed to open %s for reading", argv[1]);    if(!(outfile = fopen(argv[2], "wb")))        die("Failed to open %s for writing", argv[2]);     /* Read file header */    fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile);    if(!(file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I'         && file_hdr[3]=='F'))        die("%s is not an IVF file.", argv[1]);     printf("Using %s\n",vpx_codec_iface_name(interface));@@@@DEC_INIT     /* Read each frame */    while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) {        int               frame_sz = mem_get_le32(frame_hdr);        vpx_codec_iter_t  iter = NULL;        vpx_image_t      *img;          frame_cnt++;        if(frame_sz > sizeof(frame))            die("Frame %d data too big for example code buffer", frame_sz);        if(fread(frame, 1, frame_sz, infile) != frame_sz)            die("Frame %d failed to read complete frame", frame_cnt); @@@@@@@@PRE_DECODE@@@@@@@@DECODE         /* Write decoded data to disk */@@@@@@@@GET_FRAME            unsigned int plane, y; @@@@@@@@@@@@PROCESS_DX        }    }    printf("Processed %d frames.\n",frame_cnt);@@@@DESTROY     fclose(outfile);    fclose(infile);    return EXIT_SUCCESS;}