1 files changed, 31 insertions, 0 deletions
diff --git a/media/libaom/src/aom_dsp/bitwriter.c b/media/libaom/src/aom_dsp/bitwriter.c
new file mode 100644
index 0000000000..41fcc51754
--- /dev/null
+++ b/media/libaom/src/aom_dsp/bitwriter.c
@@ -0,0 +1,31 @@
+/*
+ * 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 <string.h>
+#include "aom_dsp/bitwriter.h"
+
+void aom_start_encode(aom_writer *w, uint8_t *source) {
+  w->buffer = source;
+  w->pos = 0;
+  od_ec_enc_init(&w->ec, 62025);
+}
+
+int aom_stop_encode(aom_writer *w) {
+  int nb_bits;
+  uint32_t bytes;
+  unsigned char *data;
+  data = od_ec_enc_done(&w->ec, &bytes);
+  nb_bits = od_ec_enc_tell(&w->ec);
+  memcpy(w->buffer, data, bytes);
+  w->pos = bytes;
+  od_ec_enc_clear(&w->ec);
+  return nb_bits;
+}