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/*
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 * DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
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 *
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 * Copyright (c) 2009 Maxim Poliakovski
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file
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 * DSP functions (inverse transforms, motion compensations, wavelet recompostion)
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 * for Indeo Video Interactive codecs.
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 */
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#ifndef AVCODEC_IVI_DSP_H
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#define AVCODEC_IVI_DSP_H
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#include "avcodec.h"
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#include "ivi_common.h"
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/**
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 *  5/3 wavelet recomposition filter for Indeo5
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 *
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 *  @param[in]   plane        pointer to the descriptor of the plane being processed
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 *  @param[out]  dst          pointer to the destination buffer
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 *  @param[in]   dst_pitch    pitch of the destination buffer
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 *  @param[in]   num_bands    number of wavelet bands to be processed
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 */
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void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
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                        const int dst_pitch, const int num_bands);
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/**
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 *  two-dimensional inverse slant 8x8 transform
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 *
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 *  @param[in]    in      pointer to the vector of transform coefficients
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 *  @param[out]   out     pointer to the output buffer (frame)
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 *  @param[in]    pitch   pitch to move to the next y line
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 *  @param[in]    flags   pointer to the array of column flags:
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 *                        != 0 - non_empty column, 0 - empty one
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 *                        (this array must be filled by caller)
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 */
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void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
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                              const uint8_t *flags);
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/**
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 *  two-dimensional inverse slant 4x4 transform
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 *
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 *  @param[in]    in      pointer to the vector of transform coefficients
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 *  @param[out]   out     pointer to the output buffer (frame)
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 *  @param[in]    pitch   pitch to move to the next y line
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 *  @param[in]    flags   pointer to the array of column flags:
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 *                        != 0 - non_empty column, 0 - empty one
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 *                        (this array must be filled by caller)
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 */
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void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, uint32_t pitch,
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                              const uint8_t *flags);
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/**
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 *  DC-only two-dimensional inverse slant transform.
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 *  Performing the inverse slant transform in this case is equivalent to
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 *  spreading (DC_coeff + 1)/2 over the whole block.
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 *  It works much faster than performing the slant transform on a vector of zeroes.
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 *
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 *  @param[in]    in          pointer to the dc coefficient
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 *  @param[out]   out         pointer to the output buffer (frame)
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 *  @param[in]    pitch       pitch to move to the next y line
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 *  @param[in]    blk_size    transform block size
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 */
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void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
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/**
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 *  inverse 1D row slant transform
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 *
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 *  @param[in]    in      pointer to the vector of transform coefficients
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 *  @param[out]   out     pointer to the output buffer (frame)
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 *  @param[in]    pitch   pitch to move to the next y line
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 *  @param[in]    flags   pointer to the array of column flags (unused here)
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 */
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void ff_ivi_row_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
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                       const uint8_t *flags);
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/**
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 *  inverse 1D column slant transform
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 *
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 *  @param[in]    in      pointer to the vector of transform coefficients
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 *  @param[out]   out     pointer to the output buffer (frame)
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 *  @param[in]    pitch   pitch to move to the next y line
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 *  @param[in]    flags   pointer to the array of column flags:
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 *                        != 0 - non_empty column, 0 - empty one
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 *                        (this array must be filled by caller)
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 */
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void ff_ivi_col_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
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                       const uint8_t *flags);
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/**
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 *  DC-only inverse row slant transform
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 */
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void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
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/**
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 *  DC-only inverse column slant transform
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 */
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void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
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/**
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 *  Copy the pixels into the frame buffer.
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 */
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void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags);
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/**
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 *  Copy the DC coefficient into the first pixel of the block and
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 *  zero all others.
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 */
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void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
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/**
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 *  8x8 block motion compensation with adding delta
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 *
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 *  @param[in,out]   buf      pointer to the block in the current frame buffer containing delta
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 *  @param[in]       ref_buf  pointer to the corresponding block in the reference frame
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 *  @param[in]       pitch    pitch for moving to the next y line
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 *  @param[in]       mc_type  interpolation type
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 */
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void ff_ivi_mc_8x8_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
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/**
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 *  4x4 block motion compensation with adding delta
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 *
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 *  @param[in,out]   buf      pointer to the block in the current frame buffer containing delta
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 *  @param[in]       ref_buf  pointer to the corresponding block in the reference frame
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 *  @param[in]       pitch    pitch for moving to the next y line
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 *  @param[in]       mc_type  interpolation type
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 */
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void ff_ivi_mc_4x4_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
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/**
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 *  motion compensation without adding delta
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 *
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 *  @param[in,out]  buf      pointer to the block in the current frame receiving the result
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 *  @param[in]      ref_buf  pointer to the corresponding block in the reference frame
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 *  @param[in]      pitch    pitch for moving to the next y line
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 *  @param[in]      mc_type  interpolation type
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 */
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void ff_ivi_mc_8x8_no_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
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/**
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 *  4x4 block motion compensation without adding delta
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 *
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 *  @param[in,out]  buf      pointer to the block in the current frame receiving the result
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 *  @param[in]      ref_buf  pointer to the corresponding block in the reference frame
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 *  @param[in]      pitch    pitch for moving to the next y line
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 *  @param[in]      mc_type  interpolation type
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 */
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void ff_ivi_mc_4x4_no_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
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#endif /* AVCODEC_IVI_DSP_H */