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-rw-r--r--media/libaom/src/stats/aomstats.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/media/libaom/src/stats/aomstats.c b/media/libaom/src/stats/aomstats.c
new file mode 100644
index 000000000..4a15adf02
--- /dev/null
+++ b/media/libaom/src/stats/aomstats.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "stats/aomstats.h"
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common/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 (%lu 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;
+ }
+}
+
+aom_fixed_buf_t stats_get(stats_io_t *stats) { return stats->buf; }