From 1cf3168516cb4a3d6042f154653d46938f9d5168 Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Sat, 30 Jan 2010 08:10:17 +0000 Subject: Indeo Video Interactive 4 and 5 common code and DSP functions. 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 --- libavcodec/ivi_dsp.h | 170 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 170 insertions(+) create mode 100644 libavcodec/ivi_dsp.h (limited to 'libavcodec/ivi_dsp.h') diff --git a/libavcodec/ivi_dsp.h b/libavcodec/ivi_dsp.h new file mode 100644 index 0000000000..43c0923ead --- /dev/null +++ b/libavcodec/ivi_dsp.h @@ -0,0 +1,170 @@ +/* + * 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 */ -- cgit v1.2.3