mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
1cf3168516
Reviewed and corrected by myself because there were no other volunteers in the last weeks. Originally committed as revision 21531 to svn://svn.ffmpeg.org/ffmpeg/trunk
171 lines
6.7 KiB
C
171 lines
6.7 KiB
C
/*
|
|
* DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
|
|
*
|
|
* Copyright (c) 2009 Maxim Poliakovski
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file libavcodec/ivi_dsp.h
|
|
* DSP functions (inverse transforms, motion compensations, wavelet recompostion)
|
|
* for Indeo Video Interactive codecs.
|
|
*/
|
|
|
|
#ifndef AVCODEC_IVI_DSP_H
|
|
#define AVCODEC_IVI_DSP_H
|
|
|
|
#include "avcodec.h"
|
|
#include "ivi_common.h"
|
|
|
|
/**
|
|
* 5/3 wavelet recomposition filter for Indeo5
|
|
*
|
|
* @param plane [in] pointer to the descriptor of the plane being processed
|
|
* @param dst [out] pointer to the destination buffer
|
|
* @param dst_pitch [in] pitch of the destination buffer
|
|
* @param num_bands [in] number of wavelet bands to be processed
|
|
*/
|
|
void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
|
|
const int dst_pitch, const int num_bands);
|
|
|
|
/**
|
|
* two-dimensional inverse slant 8x8 transform
|
|
*
|
|
* @param in [in] pointer to the vector of transform coefficients
|
|
* @param out [out] pointer to the output buffer (frame)
|
|
* @param pitch [in] pitch to move to the next y line
|
|
* @param flags [in] pointer to the array of column flags:
|
|
* != 0 - non_empty column, 0 - empty one
|
|
* (this array must be filled by caller)
|
|
*/
|
|
void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
|
|
const uint8_t *flags);
|
|
|
|
/**
|
|
* two-dimensional inverse slant 4x4 transform
|
|
*
|
|
* @param in [in] pointer to the vector of transform coefficients
|
|
* @param out [out] pointer to the output buffer (frame)
|
|
* @param pitch [in] pitch to move to the next y line
|
|
* @param flags [in] pointer to the array of column flags:
|
|
* != 0 - non_empty column, 0 - empty one
|
|
* (this array must be filled by caller)
|
|
*/
|
|
void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, uint32_t pitch,
|
|
const uint8_t *flags);
|
|
|
|
/**
|
|
* DC-only two-dimensional inverse slant transform.
|
|
* Performing the inverse slant transform in this case is equivalent to
|
|
* spreading (DC_coeff + 1)/2 over the whole block.
|
|
* It works much faster than performing the slant transform on a vector of zeroes.
|
|
*
|
|
* @param in [in] pointer to the dc coefficient
|
|
* @param out [out] pointer to the output buffer (frame)
|
|
* @param pitch [in] pitch to move to the next y line
|
|
* @param blk_size [in] transform block size
|
|
*/
|
|
void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
|
|
|
|
/**
|
|
* inverse 1D row slant transform
|
|
*
|
|
* @param in [in] pointer to the vector of transform coefficients
|
|
* @param out [out] pointer to the output buffer (frame)
|
|
* @param pitch [in] pitch to move to the next y line
|
|
* @param flags [in] pointer to the array of column flags (unused here)
|
|
*/
|
|
void ff_ivi_row_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
|
|
const uint8_t *flags);
|
|
|
|
/**
|
|
* inverse 1D column slant transform
|
|
*
|
|
* @param in [in] pointer to the vector of transform coefficients
|
|
* @param out [out] pointer to the output buffer (frame)
|
|
* @param pitch [in] pitch to move to the next y line
|
|
* @param flags [in] pointer to the array of column flags:
|
|
* != 0 - non_empty column, 0 - empty one
|
|
* (this array must be filled by caller)
|
|
*/
|
|
void ff_ivi_col_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
|
|
const uint8_t *flags);
|
|
|
|
/**
|
|
* DC-only inverse row slant transform
|
|
*/
|
|
void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
|
|
|
|
/**
|
|
* DC-only inverse column slant transform
|
|
*/
|
|
void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
|
|
|
|
/**
|
|
* Copies the pixels into the frame buffer.
|
|
*/
|
|
void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags);
|
|
|
|
/**
|
|
* Copies the DC coefficient into the first pixel of the block and
|
|
* zeroes all others.
|
|
*/
|
|
void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
|
|
|
|
/**
|
|
* 8x8 block motion compensation with adding delta
|
|
*
|
|
* @param buf [in,out] pointer to the block in the current frame buffer containing delta
|
|
* @param ref_buf [in] pointer to the corresponding block in the reference frame
|
|
* @param pitch [in] pitch for moving to the next y line
|
|
* @param mc_type [in] interpolation type
|
|
*/
|
|
void ff_ivi_mc_8x8_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
|
|
|
|
/**
|
|
* 4x4 block motion compensation with adding delta
|
|
*
|
|
* @param buf [in,out] pointer to the block in the current frame buffer containing delta
|
|
* @param ref_buf [in] pointer to the corresponding block in the reference frame
|
|
* @param pitch [in] pitch for moving to the next y line
|
|
* @param mc_type [in] interpolation type
|
|
*/
|
|
void ff_ivi_mc_4x4_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
|
|
|
|
/**
|
|
* motion compensation without adding delta
|
|
*
|
|
* @param buf [in,out] pointer to the block in the current frame receiving the result
|
|
* @param ref_buf [in] pointer to the corresponding block in the reference frame
|
|
* @param pitch [in] pitch for moving to the next y line
|
|
* @param mc_type [in] interpolation type
|
|
*/
|
|
void ff_ivi_mc_8x8_no_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
|
|
|
|
/**
|
|
* 4x4 block motion compensation without adding delta
|
|
*
|
|
* @param buf [in,out] pointer to the block in the current frame receiving the result
|
|
* @param ref_buf [in] pointer to the corresponding block in the reference frame
|
|
* @param pitch [in] pitch for moving to the next y line
|
|
* @param mc_type [in] interpolation type
|
|
*/
|
|
void ff_ivi_mc_4x4_no_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
|
|
|
|
#endif /* AVCODEC_IVI_DSP_H */
|