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 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 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 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 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 } 104 105 vpx_fixed_buf_t stats_get(stats_io_t *stats) { return stats->buf; } 106
