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, 87 insertions, 0 deletions

diff --git a/third_party/aom/aom_dsp/daalaboolwriter.h b/third_party/aom/aom_dsp/daalaboolwriter.h
new file mode 100644
index 000000000..bbaf53c69
--- /dev/null
+++ b/third_party/aom/aom_dsp/daalaboolwriter.h
@@ -0,0 +1,87 @@
+/*
+ * 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.
+ */
+
+#ifndef AOM_DSP_DAALABOOLWRITER_H_
+#define AOM_DSP_DAALABOOLWRITER_H_
+
+#include <stdio.h>
+
+#include "aom_dsp/entenc.h"
+#include "aom_dsp/prob.h"
+#if CONFIG_BITSTREAM_DEBUG
+#include "aom_util/debug_util.h"
+#endif  // CONFIG_BITSTREAM_DEBUG
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct daala_writer {
+  unsigned int pos;
+  uint8_t *buffer;
+  od_ec_enc ec;
+};
+
+typedef struct daala_writer daala_writer;
+
+void aom_daala_start_encode(daala_writer *w, uint8_t *buffer);
+void aom_daala_stop_encode(daala_writer *w);
+
+static INLINE void aom_daala_write(daala_writer *w, int bit, int prob) {
+#if CONFIG_EC_SMALLMUL
+  int p = (0x7FFFFF - (prob << 15) + prob) >> 8;
+#else
+  int p = ((prob << 15) + 256 - prob) >> 8;
+#endif
+#if CONFIG_BITSTREAM_DEBUG
+  aom_cdf_prob cdf[2] = { (aom_cdf_prob)p, 32767 };
+  /*int queue_r = 0;
+  int frame_idx_r = 0;
+  int queue_w = bitstream_queue_get_write();
+  int frame_idx_w = bitstream_queue_get_frame_write();
+  if (frame_idx_w == frame_idx_r && queue_w == queue_r) {
+    fprintf(stderr, "\n *** bitstream queue at frame_idx_w %d queue_w %d\n",
+    frame_idx_w, queue_w);
+  }*/
+  bitstream_queue_push(bit, cdf, 2);
+#endif
+
+  od_ec_encode_bool_q15(&w->ec, bit, p);
+}
+
+#if CONFIG_RAWBITS
+static INLINE void aom_daala_write_bit(daala_writer *w, int bit) {
+  od_ec_enc_bits(&w->ec, bit, 1);
+}
+#endif
+
+static INLINE void daala_write_symbol(daala_writer *w, int symb,
+                                      const aom_cdf_prob *cdf, int nsymbs) {
+#if CONFIG_BITSTREAM_DEBUG
+  /*int queue_r = 0;
+  int frame_idx_r = 0;
+  int queue_w = bitstream_queue_get_write();
+  int frame_idx_w = bitstream_queue_get_frame_write();
+  if (frame_idx_w == frame_idx_r && queue_w == queue_r) {
+    fprintf(stderr, "\n *** bitstream queue at frame_idx_w %d queue_w %d\n",
+    frame_idx_w, queue_w);
+  }*/
+  bitstream_queue_push(symb, cdf, nsymbs);
+#endif
+
+  od_ec_encode_cdf_q15(&w->ec, symb, cdf, nsymbs);
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif