vp10/common/quant_common.h

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef VP10_COMMON_QUANT_COMMON_H_
#define VP10_COMMON_QUANT_COMMON_H_

#include "vpx/vpx_codec.h"
#include "vp10/common/seg_common.h"

#ifdef __cplusplus
extern "C" {
#endif

#define MINQ 0
#define MAXQ 255
#define QINDEX_RANGE (MAXQ - MINQ + 1)
#define QINDEX_BITS 8

int16_t vp10_dc_quant(int qindex, int delta, vpx_bit_depth_t bit_depth);
int16_t vp10_ac_quant(int qindex, int delta, vpx_bit_depth_t bit_depth);

int vp10_get_qindex(const struct segmentation *seg, int segment_id,
                   int base_qindex);

#if CONFIG_NEW_QUANT

#define QUANT_PROFILES 3
#define QUANT_RANGES   2
#define NUQ_KNOTS      3

typedef tran_low_t dequant_val_type_nuq[NUQ_KNOTS + 1];
typedef tran_low_t cuml_bins_type_nuq[NUQ_KNOTS];
void vp10_get_dequant_val_nuq(int q, int qindex, int band,
                              tran_low_t *dq, tran_low_t *cuml_bins,
                              int dq_off_index);
tran_low_t vp10_dequant_abscoeff_nuq(int v, int q, const tran_low_t *dq);
tran_low_t vp10_dequant_coeff_nuq(int v, int q, const tran_low_t *dq);

static INLINE int get_dq_profile_from_ctx(int q_ctx) {
  return VPXMIN(q_ctx, QUANT_PROFILES - 1);
}
#endif  // CONFIG_NEW_QUANT

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VP10_COMMON_QUANT_COMMON_H_