| /* |
| * Copyright (c) 2013 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 "./vpxstats.h" |
| |
| #include <math.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "./tools_common.h" |
| |
| int stats_open_file(stats_io_t *stats, const char *fpf, int pass) { |
| int res; |
| stats->pass = pass; |
| |
| if (pass == 0) { |
| stats->file = fopen(fpf, "wb"); |
| stats->buf.sz = 0; |
| stats->buf.buf = NULL; |
| res = (stats->file != NULL); |
| } else { |
| size_t nbytes; |
| |
| stats->file = fopen(fpf, "rb"); |
| |
| if (stats->file == NULL) fatal("First-pass stats file does not exist!"); |
| |
| if (fseek(stats->file, 0, SEEK_END)) |
| fatal("First-pass stats file must be seekable!"); |
| |
| stats->buf.sz = stats->buf_alloc_sz = ftell(stats->file); |
| rewind(stats->file); |
| |
| stats->buf.buf = malloc(stats->buf_alloc_sz); |
| |
| if (!stats->buf.buf) |
| fatal("Failed to allocate first-pass stats buffer (%u bytes)", |
| (unsigned int)stats->buf_alloc_sz); |
| |
| nbytes = fread(stats->buf.buf, 1, stats->buf.sz, stats->file); |
| res = (nbytes == stats->buf.sz); |
| } |
| |
| return res; |
| } |
| |
| int stats_open_mem(stats_io_t *stats, int pass) { |
| int res; |
| stats->pass = pass; |
| |
| if (!pass) { |
| stats->buf.sz = 0; |
| stats->buf_alloc_sz = 64 * 1024; |
| stats->buf.buf = malloc(stats->buf_alloc_sz); |
| } |
| |
| stats->buf_ptr = stats->buf.buf; |
| res = (stats->buf.buf != NULL); |
| return res; |
| } |
| |
| void stats_close(stats_io_t *stats, int last_pass) { |
| if (stats->file) { |
| if (stats->pass == last_pass) { |
| free(stats->buf.buf); |
| } |
| |
| fclose(stats->file); |
| stats->file = NULL; |
| } else { |
| if (stats->pass == last_pass) free(stats->buf.buf); |
| } |
| } |
| |
| void stats_write(stats_io_t *stats, const void *pkt, size_t len) { |
| if (stats->file) { |
| (void)fwrite(pkt, 1, len, stats->file); |
| } else { |
| if (stats->buf.sz + len > stats->buf_alloc_sz) { |
| size_t new_sz = stats->buf_alloc_sz + 64 * 1024; |
| char *new_ptr = realloc(stats->buf.buf, new_sz); |
| |
| if (new_ptr) { |
| stats->buf_ptr = new_ptr + (stats->buf_ptr - (char *)stats->buf.buf); |
| stats->buf.buf = new_ptr; |
| stats->buf_alloc_sz = new_sz; |
| } else { |
| fatal("Failed to realloc firstpass stats buffer."); |
| } |
| } |
| |
| memcpy(stats->buf_ptr, pkt, len); |
| stats->buf.sz += len; |
| stats->buf_ptr += len; |
| } |
| } |
| |
| vpx_fixed_buf_t stats_get(stats_io_t *stats) { return stats->buf; } |