mirror of https://git.ffmpeg.org/ffmpeg.git
171 lines
6.7 KiB
C
171 lines
6.7 KiB
C
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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 FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 libavcodec/ivi_dsp.h
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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 plane [in] pointer to the descriptor of the plane being processed
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* @param dst [out] pointer to the destination buffer
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* @param dst_pitch [in] pitch of the destination buffer
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* @param num_bands [in] 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 pitch [in] pitch to move to the next y line
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* @param flags [in] 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 pitch [in] pitch to move to the next y line
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* @param flags [in] 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 pitch [in] pitch to move to the next y line
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* @param blk_size [in] 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 pitch [in] pitch to move to the next y line
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* @param flags [in] 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 pitch [in] pitch to move to the next y line
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* @param flags [in] 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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* Copies 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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* Copies the DC coefficient into the first pixel of the block and
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* zeroes 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 buf [in,out] pointer to the block in the current frame buffer containing delta
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* @param ref_buf [in] pointer to the corresponding block in the reference frame
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* @param pitch [in] pitch for moving to the next y line
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* @param mc_type [in] 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 buf [in,out] pointer to the block in the current frame buffer containing delta
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* @param ref_buf [in] pointer to the corresponding block in the reference frame
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* @param pitch [in] pitch for moving to the next y line
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* @param mc_type [in] 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 buf [in,out] pointer to the block in the current frame receiving the result
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* @param ref_buf [in] pointer to the corresponding block in the reference frame
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* @param pitch [in] pitch for moving to the next y line
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* @param mc_type [in] 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 buf [in,out] pointer to the block in the current frame receiving the result
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* @param ref_buf [in] pointer to the corresponding block in the reference frame
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* @param pitch [in] pitch for moving to the next y line
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* @param mc_type [in] 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 */
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