libavcodec/ivi_dsp.h

   1 /*
   2  * DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
   3  *
   4  * Copyright (c) 2009-2011 Maxim Poliakovski
   5  *
   6  * This file is part of Libav.
   7  *
   8  * Libav is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * Libav is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with Libav; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * @file
  25  * DSP functions (inverse transforms, motion compensations, wavelet recompostion)
  26  * for Indeo Video Interactive codecs.
  27  */
  28
  29 #ifndef AVCODEC_IVI_DSP_H
  30 #define AVCODEC_IVI_DSP_H
  31
  32 #include "avcodec.h"
  33 #include "ivi_common.h"
  34
  35 /**
  36  *  5/3 wavelet recomposition filter for Indeo5
  37  *
  38  *  @param[in]   plane        pointer to the descriptor of the plane being processed
  39  *  @param[out]  dst          pointer to the destination buffer
  40  *  @param[in]   dst_pitch    pitch of the destination buffer
  41  */
  42 void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
  43                         const int dst_pitch);
  44
  45 /**
  46  *  Haar wavelet recomposition filter for Indeo 4
  47  *
  48  *  @param[in]  plane        pointer to the descriptor of the plane being processed
  49  *  @param[out] dst          pointer to the destination buffer
  50  *  @param[in]  dst_pitch    pitch of the destination buffer
  51  */
  52 void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
  53                            const int dst_pitch);
  54
  55 /**
  56  *  two-dimensional inverse Haar 8x8 transform for Indeo 4
  57  *
  58  *  @param[in]  in        pointer to the vector of transform coefficients
  59  *  @param[out] out       pointer to the output buffer (frame)
  60  *  @param[in]  pitch     pitch to move to the next y line
  61  *  @param[in]  flags     pointer to the array of column flags:
  62  *                        != 0 - non_empty column, 0 - empty one
  63  *                        (this array must be filled by caller)
  64  */
  65 void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
  66                              const uint8_t *flags);
  67
  68 /**
  69  *  DC-only two-dimensional inverse Haar transform for Indeo 4.
  70  *  Performing the inverse transform in this case is equivalent to
  71  *  spreading DC_coeff >> 3 over the whole block.
  72  *
  73  *  @param[in]  in          pointer to the dc coefficient
  74  *  @param[out] out         pointer to the output buffer (frame)
  75  *  @param[in]  pitch       pitch to move to the next y line
  76  *  @param[in]  blk_size    transform block size
  77  */
  78 void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch,
  79                        int blk_size);
  80
  81 /**
  82  *  two-dimensional inverse slant 8x8 transform
  83  *
  84  *  @param[in]    in      pointer to the vector of transform coefficients
  85  *  @param[out]   out     pointer to the output buffer (frame)
  86  *  @param[in]    pitch   pitch to move to the next y line
  87  *  @param[in]    flags   pointer to the array of column flags:
  88  *                        != 0 - non_empty column, 0 - empty one
  89  *                        (this array must be filled by caller)
  90  */
  91 void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
  92                               const uint8_t *flags);
  93
  94 /**
  95  *  two-dimensional inverse slant 4x4 transform
  96  *
  97  *  @param[in]    in      pointer to the vector of transform coefficients
  98  *  @param[out]   out     pointer to the output buffer (frame)
  99  *  @param[in]    pitch   pitch to move to the next y line
 100  *  @param[in]    flags   pointer to the array of column flags:
 101  *                        != 0 - non_empty column, 0 - empty one
 102  *                        (this array must be filled by caller)
 103  */
 104 void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, uint32_t pitch,
 105                               const uint8_t *flags);
 106
 107 /**
 108  *  DC-only two-dimensional inverse slant transform.
 109  *  Performing the inverse slant transform in this case is equivalent to
 110  *  spreading (DC_coeff + 1)/2 over the whole block.
 111  *  It works much faster than performing the slant transform on a vector of zeroes.
 112  *
 113  *  @param[in]    in          pointer to the dc coefficient
 114  *  @param[out]   out         pointer to the output buffer (frame)
 115  *  @param[in]    pitch       pitch to move to the next y line
 116  *  @param[in]    blk_size    transform block size
 117  */
 118 void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
 119
 120 /**
 121  *  inverse 1D row slant transform
 122  *
 123  *  @param[in]    in      pointer to the vector of transform coefficients
 124  *  @param[out]   out     pointer to the output buffer (frame)
 125  *  @param[in]    pitch   pitch to move to the next y line
 126  *  @param[in]    flags   pointer to the array of column flags (unused here)
 127  */
 128 void ff_ivi_row_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
 129                        const uint8_t *flags);
 130
 131 /**
 132  *  inverse 1D column slant transform
 133  *
 134  *  @param[in]    in      pointer to the vector of transform coefficients
 135  *  @param[out]   out     pointer to the output buffer (frame)
 136  *  @param[in]    pitch   pitch to move to the next y line
 137  *  @param[in]    flags   pointer to the array of column flags:
 138  *                        != 0 - non_empty column, 0 - empty one
 139  *                        (this array must be filled by caller)
 140  */
 141 void ff_ivi_col_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
 142                        const uint8_t *flags);
 143
 144 /**
 145  *  DC-only inverse row slant transform
 146  */
 147 void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
 148
 149 /**
 150  *  DC-only inverse column slant transform
 151  */
 152 void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
 153
 154 /**
 155  *  Copy the pixels into the frame buffer.
 156  */
 157 void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags);
 158
 159 /**
 160  *  Copy the DC coefficient into the first pixel of the block and
 161  *  zero all others.
 162  */
 163 void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
 164
 165 /**
 166  *  8x8 block motion compensation with adding delta
 167  *
 168  *  @param[in,out]   buf      pointer to the block in the current frame buffer containing delta
 169  *  @param[in]       ref_buf  pointer to the corresponding block in the reference frame
 170  *  @param[in]       pitch    pitch for moving to the next y line
 171  *  @param[in]       mc_type  interpolation type
 172  */
 173 void ff_ivi_mc_8x8_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
 174
 175 /**
 176  *  4x4 block motion compensation with adding delta
 177  *
 178  *  @param[in,out]   buf      pointer to the block in the current frame buffer containing delta
 179  *  @param[in]       ref_buf  pointer to the corresponding block in the reference frame
 180  *  @param[in]       pitch    pitch for moving to the next y line
 181  *  @param[in]       mc_type  interpolation type
 182  */
 183 void ff_ivi_mc_4x4_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
 184
 185 /**
 186  *  motion compensation without adding delta
 187  *
 188  *  @param[in,out]  buf      pointer to the block in the current frame receiving the result
 189  *  @param[in]      ref_buf  pointer to the corresponding block in the reference frame
 190  *  @param[in]      pitch    pitch for moving to the next y line
 191  *  @param[in]      mc_type  interpolation type
 192  */
 193 void ff_ivi_mc_8x8_no_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
 194
 195 /**
 196  *  4x4 block motion compensation without adding delta
 197  *
 198  *  @param[in,out]  buf      pointer to the block in the current frame receiving the result
 199  *  @param[in]      ref_buf  pointer to the corresponding block in the reference frame
 200  *  @param[in]      pitch    pitch for moving to the next y line
 201  *  @param[in]      mc_type  interpolation type
 202  */
 203 void ff_ivi_mc_4x4_no_delta(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
 204
 205 #endif /* AVCODEC_IVI_DSP_H */