/*
* 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; }
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¤ Dauer der Verarbeitung: 0.3 Sekunden
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