1 /*
2 * Copyright (c) 2013 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 "./vpxstats.h"
12
13 #include <math.h>
14 #include <stdlib.h>
15 #include <string.h>
16
17 #include "./tools_common.h"
18
stats_open_file(stats_io_t * stats,const char * fpf,int pass)19 int stats_open_file(stats_io_t *stats, const char *fpf, int pass) {
20 int res;
21 stats->pass = pass;
22
23 if (pass == 0) {
24 stats->file = fopen(fpf, "wb");
25 stats->buf.sz = 0;
26 stats->buf.buf = NULL;
27 res = (stats->file != NULL);
28 } else {
29 size_t nbytes;
30
31 stats->file = fopen(fpf, "rb");
32
33 if (stats->file == NULL) fatal("First-pass stats file does not exist!");
34
35 if (fseek(stats->file, 0, SEEK_END))
36 fatal("First-pass stats file must be seekable!");
37
38 stats->buf.sz = stats->buf_alloc_sz = ftell(stats->file);
39 rewind(stats->file);
40
41 stats->buf.buf = malloc(stats->buf_alloc_sz);
42
43 if (!stats->buf.buf)
44 fatal("Failed to allocate first-pass stats buffer (%lu bytes)",
45 (unsigned int)stats->buf_alloc_sz);
46
47 nbytes = fread(stats->buf.buf, 1, stats->buf.sz, stats->file);
48 res = (nbytes == stats->buf.sz);
49 }
50
51 return res;
52 }
53
stats_open_mem(stats_io_t * stats,int pass)54 int stats_open_mem(stats_io_t *stats, int pass) {
55 int res;
56 stats->pass = pass;
57
58 if (!pass) {
59 stats->buf.sz = 0;
60 stats->buf_alloc_sz = 64 * 1024;
61 stats->buf.buf = malloc(stats->buf_alloc_sz);
62 }
63
64 stats->buf_ptr = stats->buf.buf;
65 res = (stats->buf.buf != NULL);
66 return res;
67 }
68
stats_close(stats_io_t * stats,int last_pass)69 void stats_close(stats_io_t *stats, int last_pass) {
70 if (stats->file) {
71 if (stats->pass == last_pass) {
72 free(stats->buf.buf);
73 }
74
75 fclose(stats->file);
76 stats->file = NULL;
77 } else {
78 if (stats->pass == last_pass) free(stats->buf.buf);
79 }
80 }
81
stats_write(stats_io_t * stats,const void * pkt,size_t len)82 void stats_write(stats_io_t *stats, const void *pkt, size_t len) {
83 if (stats->file) {
84 (void)fwrite(pkt, 1, len, stats->file);
85 } else {
86 if (stats->buf.sz + len > stats->buf_alloc_sz) {
87 size_t new_sz = stats->buf_alloc_sz + 64 * 1024;
88 char *new_ptr = realloc(stats->buf.buf, new_sz);
89
90 if (new_ptr) {
91 stats->buf_ptr = new_ptr + (stats->buf_ptr - (char *)stats->buf.buf);
92 stats->buf.buf = new_ptr;
93 stats->buf_alloc_sz = new_sz;
94 } else {
95 fatal("Failed to realloc firstpass stats buffer.");
96 }
97 }
98
99 memcpy(stats->buf_ptr, pkt, len);
100 stats->buf.sz += len;
101 stats->buf_ptr += len;
102 }
103 }
104
stats_get(stats_io_t * stats)105 vpx_fixed_buf_t stats_get(stats_io_t *stats) { return stats->buf; }
106