WebM Codec SDK: resize_util

WebM Codec SDK

resize_util
1/*
2 * Copyright (c) 2014 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#include <assert.h>
12#include <limits.h>
13#include <math.h>
14#include <stdio.h>
15#include <stdlib.h>
16#include <string.h>
17
18#include "../tools_common.h"
19#include "../vp9/encoder/vp9_resize.h"
20
21static const char *exec_name = NULL;
22
23static void usage() {
24 printf("Usage:\n");
25 printf("%s <input_yuv> <width>x<height> <target_width>x<target_height> ",
26 exec_name);
27 printf("<output_yuv> [<frames>]\n");
28}
29
30void usage_exit(void) {
31 usage();
32 exit(EXIT_FAILURE);
33}
34
35static int parse_dim(char *v, int *width, int *height) {
36 char *x = strchr(v, 'x');
37 if (x == NULL) x = strchr(v, 'X');
38 if (x == NULL) return 0;
39 *width = atoi(v);
40 *height = atoi(&x[1]);
41 if (*width <= 0 || *height <= 0)
42 return 0;
43 else
44 return 1;
45}
46
47int main(int argc, char *argv[]) {
48 char *fin, *fout;
49 FILE *fpin, *fpout;
50 uint8_t *inbuf, *outbuf;
51 uint8_t *inbuf_u, *outbuf_u;
52 uint8_t *inbuf_v, *outbuf_v;
53 int f, frames;
54 int width, height, target_width, target_height;
55
56 exec_name = argv[0];
57
58 if (argc < 5) {
59 printf("Incorrect parameters:\n");
60 usage();
61 return 1;
62 }
63
64 fin = argv[1];
65 fout = argv[4];
66 if (!parse_dim(argv[2], &width, &height)) {
67 printf("Incorrect parameters: %s\n", argv[2]);
68 usage();
69 return 1;
70 }
71 if (!parse_dim(argv[3], &target_width, &target_height)) {
72 printf("Incorrect parameters: %s\n", argv[3]);
73 usage();
74 return 1;
75 }
76
77 fpin = fopen(fin, "rb");
78 if (fpin == NULL) {
79 printf("Can't open file %s to read\n", fin);
80 usage();
81 return 1;
82 }
83 fpout = fopen(fout, "wb");
84 if (fpout == NULL) {
85 printf("Can't open file %s to write\n", fout);
86 usage();
87 return 1;
88 }
89 if (argc >= 6)
90 frames = atoi(argv[5]);
91 else
92 frames = INT_MAX;
93
94 printf("Input size: %dx%d\n", width, height);
95 printf("Target size: %dx%d, Frames: ", target_width, target_height);
96 if (frames == INT_MAX)
97 printf("All\n");
98 else
99 printf("%d\n", frames);
100
101 inbuf = (uint8_t *)malloc(width * height * 3 / 2);
102 outbuf = (uint8_t *)malloc(target_width * target_height * 3 / 2);
103 inbuf_u = inbuf + width * height;
104 inbuf_v = inbuf_u + width * height / 4;
105 outbuf_u = outbuf + target_width * target_height;
106 outbuf_v = outbuf_u + target_width * target_height / 4;
107 f = 0;
108 while (f < frames) {
109 if (fread(inbuf, width * height * 3 / 2, 1, fpin) != 1) break;
110 vp9_resize_frame420(inbuf, width, inbuf_u, inbuf_v, width / 2, height,
111 width, outbuf, target_width, outbuf_u, outbuf_v,
112 target_width / 2, target_height, target_width);
113 fwrite(outbuf, target_width * target_height * 3 / 2, 1, fpout);
114 f++;
115 }
116 printf("%d frames processed\n", f);
117 fclose(fpin);
118 fclose(fpout);
119
120 free(inbuf);
121 free(outbuf);
122 return 0;
123}