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/*
* Copyright (c) 2010 The WebM 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())
@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 */
if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ
&& 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;
}
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