/* *  Copyright (c) 2014 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. */ #include <assert.h>#include <limits.h>#include <math.h>#include <stdio.h>#include <stdlib.h>#include <string.h> #include "../tools_common.h"#include "../vp9/encoder/vp9_resize.h" static const char *exec_name = NULL; static void usage() {  printf("Usage:\n");  printf("%s <input_yuv> <width>x<height> <target_width>x<target_height> ",         exec_name);  printf("<output_yuv> [<frames>]\n");} void usage_exit(void) {  usage();  exit(EXIT_FAILURE);} static int parse_dim(char *v, int *width, int *height) {  char *x = strchr(v, 'x');  if (x == NULL) x = strchr(v, 'X');  if (x == NULL) return 0;  *width = atoi(v);  *height = atoi(&x[1]);  if (*width <= 0 || *height <= 0)    return 0;  else    return 1;} int main(int argc, char *argv[]) {  char *fin, *fout;  FILE *fpin, *fpout;  uint8_t *inbuf, *outbuf;  uint8_t *inbuf_u, *outbuf_u;  uint8_t *inbuf_v, *outbuf_v;  int f, frames;  int width, height, target_width, target_height;   exec_name = argv[0];   if (argc < 5) {    printf("Incorrect parameters:\n");    usage();    return 1;  }   fin = argv[1];  fout = argv[4];  if (!parse_dim(argv[2], &width, &height)) {    printf("Incorrect parameters: %s\n", argv[2]);    usage();    return 1;  }  if (!parse_dim(argv[3], &target_width, &target_height)) {    printf("Incorrect parameters: %s\n", argv[3]);    usage();    return 1;  }   fpin = fopen(fin, "rb");  if (fpin == NULL) {    printf("Can't open file %s to read\n", fin);    usage();    return 1;  }  fpout = fopen(fout, "wb");  if (fpout == NULL) {    printf("Can't open file %s to write\n", fout);    usage();    return 1;  }  if (argc >= 6)    frames = atoi(argv[5]);  else    frames = INT_MAX;   printf("Input size:  %dx%d\n", width, height);  printf("Target size: %dx%d, Frames: ", target_width, target_height);  if (frames == INT_MAX)    printf("All\n");  else    printf("%d\n", frames);   inbuf = (uint8_t *)malloc(width * height * 3 / 2);  outbuf = (uint8_t *)malloc(target_width * target_height * 3 / 2);  inbuf_u = inbuf + width * height;  inbuf_v = inbuf_u + width * height / 4;  outbuf_u = outbuf + target_width * target_height;  outbuf_v = outbuf_u + target_width * target_height / 4;  f = 0;  while (f < frames) {    if (fread(inbuf, width * height * 3 / 2, 1, fpin) != 1) break;    vp9_resize_frame420(inbuf, width, inbuf_u, inbuf_v, width / 2, height,                        width, outbuf, target_width, outbuf_u, outbuf_v,                        target_width / 2, target_height, target_width);    fwrite(outbuf, target_width * target_height * 3 / 2, 1, fpout);    f++;  }  printf("%d frames processed\n", f);  fclose(fpin);  fclose(fpout);   free(inbuf);  free(outbuf);  return 0;}