forked from len0rd/rockbox
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/* Copyright (c) 2017 Google Inc.
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Written by Andrew Allen */
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file mapping_matrix.h
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* @brief Opus reference implementation mapping matrix API
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*/
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#ifndef MAPPING_MATRIX_H
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#define MAPPING_MATRIX_H
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#include "opus_types.h"
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#include "opus_projection.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct MappingMatrix
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{
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int rows; /* number of channels outputted from matrix. */
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int cols; /* number of channels inputted to matrix. */
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int gain; /* in dB. S7.8-format. */
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/* Matrix cell data goes here using col-wise ordering. */
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} MappingMatrix;
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opus_int32 mapping_matrix_get_size(int rows, int cols);
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opus_int16 *mapping_matrix_get_data(const MappingMatrix *matrix);
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void mapping_matrix_init(
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MappingMatrix * const st,
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int rows,
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int cols,
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int gain,
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const opus_int16 *data,
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opus_int32 data_size
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);
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#ifndef DISABLE_FLOAT_API
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void mapping_matrix_multiply_channel_in_float(
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const MappingMatrix *matrix,
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const float *input,
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int input_rows,
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opus_val16 *output,
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int output_row,
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int output_rows,
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int frame_size
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);
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void mapping_matrix_multiply_channel_out_float(
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const MappingMatrix *matrix,
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const opus_val16 *input,
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int input_row,
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int input_rows,
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float *output,
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int output_rows,
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int frame_size
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);
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#endif /* DISABLE_FLOAT_API */
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void mapping_matrix_multiply_channel_in_short(
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const MappingMatrix *matrix,
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const opus_int16 *input,
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int input_rows,
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opus_val16 *output,
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int output_row,
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int output_rows,
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int frame_size
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);
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void mapping_matrix_multiply_channel_out_short(
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const MappingMatrix *matrix,
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const opus_val16 *input,
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int input_row,
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int input_rows,
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opus_int16 *output,
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int output_rows,
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int frame_size
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);
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/* Pre-computed mixing and demixing matrices for 1st to 3rd-order ambisonics.
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* foa: first-order ambisonics
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* soa: second-order ambisonics
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* toa: third-order ambisonics
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*/
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extern const MappingMatrix mapping_matrix_foa_mixing;
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extern const opus_int16 mapping_matrix_foa_mixing_data[36];
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extern const MappingMatrix mapping_matrix_soa_mixing;
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extern const opus_int16 mapping_matrix_soa_mixing_data[121];
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extern const MappingMatrix mapping_matrix_toa_mixing;
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extern const opus_int16 mapping_matrix_toa_mixing_data[324];
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extern const MappingMatrix mapping_matrix_foa_demixing;
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extern const opus_int16 mapping_matrix_foa_demixing_data[36];
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extern const MappingMatrix mapping_matrix_soa_demixing;
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extern const opus_int16 mapping_matrix_soa_demixing_data[121];
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extern const MappingMatrix mapping_matrix_toa_demixing;
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extern const opus_int16 mapping_matrix_toa_demixing_data[324];
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#ifdef __cplusplus
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}
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#endif
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#endif /* MAPPING_MATRIX_H */
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