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, 49 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/subexp.h b/third_party/aom/av1/encoder/subexp.h
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+++ b/third_party/aom/av1/encoder/subexp.h
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+/*
+ * 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 AV1_ENCODER_SUBEXP_H_
+#define AV1_ENCODER_SUBEXP_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "aom_dsp/bitwriter.h"
+#include "aom_dsp/prob.h"
+
+void av1_write_prob_diff_update(aom_writer *w, aom_prob newp, aom_prob oldpm);
+
+void av1_cond_prob_diff_update(aom_writer *w, aom_prob *oldp,
+                               const unsigned int ct[2], int probwt);
+
+int av1_prob_diff_update_savings_search(const unsigned int *ct, aom_prob oldp,
+                                        aom_prob *bestp, aom_prob upd,
+                                        int probwt);
+
+int av1_prob_diff_update_savings_search_model(const unsigned int *ct,
+                                              const aom_prob oldp,
+                                              aom_prob *bestp, aom_prob upd,
+                                              int stepsize, int probwt);
+
+int av1_cond_prob_diff_update_savings(aom_prob *oldp, const unsigned int ct[2],
+                                      int probwt);
+#if CONFIG_SUBFRAME_PROB_UPDATE
+int av1_prob_update_search_subframe(unsigned int ct[][2], aom_prob oldp,
+                                    aom_prob *bestp, aom_prob upd, int n);
+int av1_prob_update_search_model_subframe(
+    unsigned int ct[ENTROPY_NODES][COEF_PROBS_BUFS][2], const aom_prob *oldp,
+    aom_prob *bestp, aom_prob upd, int stepsize, int n);
+#endif  // CONFIG_SUBFRAME_PROB_UPDATE
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AV1_ENCODER_SUBEXP_H_