Import aom library

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

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

third_party/aom/av1/decoder/pvq_decoder.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2001-2016, 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.
+ */
+
+/* clang-format off */
+
+#if !defined(_pvq_decoder_H)
+# define _pvq_decoder_H (1)
+# include "aom_dsp/bitreader.h"
+# include "aom_dsp/entdec.h"
+# include "av1/common/pvq.h"
+# include "av1/decoder/decint.h"
+
+#define aom_read_symbol_pvq(r, cdf, nsymbs, ACCT_STR_NAME) \
+  aom_read_symbol_pvq_(r, cdf, nsymbs ACCT_STR_ARG(ACCT_STR_NAME))
+
+int aom_read_symbol_pvq_(aom_reader *r, aom_cdf_prob *cdf, int nsymbs
+  ACCT_STR_PARAM);
+
+void aom_decode_band_pvq_splits(aom_reader *r, od_pvq_codeword_ctx *adapt,
+ od_coeff *y, int n, int k, int level);
+
+#define aom_laplace_decode_special(r, decay, ACCT_STR_NAME) \
+  aom_laplace_decode_special_(r, decay ACCT_STR_ARG(ACCT_STR_NAME))
+
+int aom_laplace_decode_special_(aom_reader *r, unsigned decay ACCT_STR_PARAM);
+
+void od_pvq_decode(daala_dec_ctx *dec, od_coeff *ref, od_coeff *out, int q0,
+    int pli, int bs, const od_val16 *beta, int is_keyframe,
+    unsigned int *flags, PVQ_SKIP_TYPE ac_dc_coded, const int16_t *qm,
+    const int16_t *qm_inv);
+
+#endif