77bba8d30a
PVQ replaces the scalar quantizer and coefficient coding with a new
design originally developed in Daala. It currently depends on the
Daala entropy coder although it could be adapted to work with another
entropy coder if needed:
./configure --enable-experimental --enable-daala_ec --enable-pvq
The version of PVQ in this commit is adapted from the following
revision of Daala:
fb51c1ade6
More information about PVQ:
- https://people.xiph.org/~jm/daala/pvq_demo/
- https://jmvalin.ca/papers/spie_pvq.pdf
The following files are copied as-is from Daala with minimal
adaptations, therefore we disable clang-format on those files
to make it easier to synchronize the AV1 and Daala codebases in the future:
av1/common/generic_code.c
av1/common/generic_code.h
av1/common/laplace_tables.c
av1/common/partition.c
av1/common/partition.h
av1/common/pvq.c
av1/common/pvq.h
av1/common/state.c
av1/common/state.h
av1/common/zigzag.h
av1/common/zigzag16.c
av1/common/zigzag32.c
av1/common/zigzag4.c
av1/common/zigzag64.c
av1/common/zigzag8.c
av1/decoder/decint.h
av1/decoder/generic_decoder.c
av1/decoder/laplace_decoder.c
av1/decoder/pvq_decoder.c
av1/decoder/pvq_decoder.h
av1/encoder/daala_compat_enc.c
av1/encoder/encint.h
av1/encoder/generic_encoder.c
av1/encoder/laplace_encoder.c
av1/encoder/pvq_encoder.c
av1/encoder/pvq_encoder.h
Known issues:
- Lossless mode is not supported, '--lossless=1' will give the same result as
'--end-usage=q --cq-level=1'.
- High bit depth is not supported by PVQ.
Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/*
|
|
* 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(_encint_H)
|
|
# define _encint_H (1)
|
|
|
|
typedef struct daala_enc_ctx od_enc_ctx;
|
|
typedef struct od_params_ctx od_params_ctx;
|
|
typedef struct od_rollback_buffer od_rollback_buffer;
|
|
|
|
# include "aom_dsp/entenc.h"
|
|
# include "av1/common/odintrin.h"
|
|
# include "av1/common/pvq_state.h"
|
|
|
|
struct daala_enc_ctx{
|
|
/* Stores context-adaptive CDFs for PVQ. */
|
|
od_state state;
|
|
/* Daala entropy encoder. */
|
|
od_ec_enc ec;
|
|
int use_activity_masking;
|
|
/* Mode of quantization matrice : FLAT (0) or HVS (1) */
|
|
int qm;
|
|
/*Normalized PVQ lambda for use where we've already performed
|
|
quantization.*/
|
|
double pvq_norm_lambda;
|
|
double pvq_norm_lambda_dc;
|
|
};
|
|
|
|
// from daalaenc.h
|
|
/**The encoder context.*/
|
|
typedef struct daala_enc_ctx daala_enc_ctx;
|
|
|
|
/** Holds important encoder information so we can roll back decisions */
|
|
struct od_rollback_buffer {
|
|
od_ec_enc ec;
|
|
od_adapt_ctx adapt;
|
|
};
|
|
|
|
void od_encode_checkpoint(const daala_enc_ctx *enc, od_rollback_buffer *rbuf);
|
|
void od_encode_rollback(daala_enc_ctx *enc, const od_rollback_buffer *rbuf);
|
|
|
|
#endif
|