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author | Matt A. Tobin <email@mattatobin.com> | 2020-04-07 23:30:51 -0400 |
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committer | Matt A. Tobin <email@mattatobin.com> | 2020-04-07 23:30:51 -0400 |
commit | 5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb (patch) | |
tree | 45d55e3e5e73c4255c4d71258d9be5b2d004d28f /media/libaom/src/aom_dsp/entenc.h | |
parent | 50f1986697a7412e4160976fa5e11217b4ef1f44 (diff) | |
download | UXP-5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb.tar UXP-5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb.tar.gz UXP-5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb.tar.lz UXP-5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb.tar.xz UXP-5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb.zip |
Move aom source to a sub-directory under media/libaom
There is no damned reason to treat this differently than any other media lib given its license and there never was.
Diffstat (limited to 'media/libaom/src/aom_dsp/entenc.h')
-rw-r--r-- | media/libaom/src/aom_dsp/entenc.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/media/libaom/src/aom_dsp/entenc.h b/media/libaom/src/aom_dsp/entenc.h new file mode 100644 index 000000000..3551d4250 --- /dev/null +++ b/media/libaom/src/aom_dsp/entenc.h @@ -0,0 +1,85 @@ +/* + * 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. + */ + +#ifndef AOM_AOM_DSP_ENTENC_H_ +#define AOM_AOM_DSP_ENTENC_H_ +#include <stddef.h> +#include "aom_dsp/entcode.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct od_ec_enc od_ec_enc; + +#define OD_MEASURE_EC_OVERHEAD (0) + +/*The entropy encoder context.*/ +struct od_ec_enc { + /*Buffered output. + This contains only the raw bits until the final call to od_ec_enc_done(), + where all the arithmetic-coded data gets prepended to it.*/ + unsigned char *buf; + /*The size of the buffer.*/ + uint32_t storage; + /*A buffer for output bytes with their associated carry flags.*/ + uint16_t *precarry_buf; + /*The size of the pre-carry buffer.*/ + uint32_t precarry_storage; + /*The offset at which the next entropy-coded byte will be written.*/ + uint32_t offs; + /*The low end of the current range.*/ + od_ec_window low; + /*The number of values in the current range.*/ + uint16_t rng; + /*The number of bits of data in the current value.*/ + int16_t cnt; + /*Nonzero if an error occurred.*/ + int error; +#if OD_MEASURE_EC_OVERHEAD + double entropy; + int nb_symbols; +#endif +}; + +/*See entenc.c for further documentation.*/ + +void od_ec_enc_init(od_ec_enc *enc, uint32_t size) OD_ARG_NONNULL(1); +void od_ec_enc_reset(od_ec_enc *enc) OD_ARG_NONNULL(1); +void od_ec_enc_clear(od_ec_enc *enc) OD_ARG_NONNULL(1); + +void od_ec_encode_bool_q15(od_ec_enc *enc, int val, unsigned f_q15) + OD_ARG_NONNULL(1); +void od_ec_encode_cdf_q15(od_ec_enc *enc, int s, const uint16_t *cdf, int nsyms) + OD_ARG_NONNULL(1) OD_ARG_NONNULL(3); + +void od_ec_enc_bits(od_ec_enc *enc, uint32_t fl, unsigned ftb) + OD_ARG_NONNULL(1); + +void od_ec_enc_patch_initial_bits(od_ec_enc *enc, unsigned val, int nbits) + OD_ARG_NONNULL(1); +OD_WARN_UNUSED_RESULT unsigned char *od_ec_enc_done(od_ec_enc *enc, + uint32_t *nbytes) + OD_ARG_NONNULL(1) OD_ARG_NONNULL(2); + +OD_WARN_UNUSED_RESULT int od_ec_enc_tell(const od_ec_enc *enc) + OD_ARG_NONNULL(1); +OD_WARN_UNUSED_RESULT uint32_t od_ec_enc_tell_frac(const od_ec_enc *enc) + OD_ARG_NONNULL(1); + +void od_ec_enc_checkpoint(od_ec_enc *dst, const od_ec_enc *src); +void od_ec_enc_rollback(od_ec_enc *dst, const od_ec_enc *src); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AOM_DSP_ENTENC_H_ |