Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 32 insertions, 0 deletions

diff --git a/third_party/aom/aom_dsp/daalaboolwriter.c b/third_party/aom/aom_dsp/daalaboolwriter.c
new file mode 100644
index 000000000..0ba8f6ab8
--- /dev/null
+++ b/third_party/aom/aom_dsp/daalaboolwriter.c
@@ -0,0 +1,32 @@
+/*
+ * 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/daalaboolwriter.h"
+
+void aom_daala_start_encode(daala_writer *br, uint8_t *source) {
+  br->buffer = source;
+  br->pos = 0;
+  od_ec_enc_init(&br->ec, 62025);
+}
+
+void aom_daala_stop_encode(daala_writer *br) {
+  uint32_t daala_bytes;
+  unsigned char *daala_data;
+  daala_data = od_ec_enc_done(&br->ec, &daala_bytes);
+  memcpy(br->buffer, daala_data, daala_bytes);
+  br->pos = daala_bytes;
+  /* Prevent ec bitstream from being detected as a superframe marker.
+     Must always be added, so that rawbits knows the exact length of the
+      bitstream. */
+  br->buffer[br->pos++] = 0;
+  od_ec_enc_clear(&br->ec);
+}