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19a0729b4c
This patch lets e.g. dsputil_init chose dsp functions with respect to the bit depth to decode. The naming scheme of bit depth dependent functions is <base name>_<bit depth>[_<prefix>] (i.e. the old clear_blocks_c is now named clear_blocks_8_c). Note: Some of the functions for high bit depth is not dependent on the bit depth, but only on the pixel size. This leaves some room for optimizing binary size. Preparatory patch for high bit depth h264 decoding support. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
/*
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* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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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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* H.264 / AVC / MPEG4 prediction functions.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#ifndef AVCODEC_H264PRED_H
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#define AVCODEC_H264PRED_H
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#include "libavutil/common.h"
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#include "dsputil.h"
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/**
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* Prediction types
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*/
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//@{
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#define VERT_PRED 0
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#define HOR_PRED 1
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#define DC_PRED 2
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#define DIAG_DOWN_LEFT_PRED 3
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#define DIAG_DOWN_RIGHT_PRED 4
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#define VERT_RIGHT_PRED 5
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#define HOR_DOWN_PRED 6
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#define VERT_LEFT_PRED 7
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#define HOR_UP_PRED 8
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// DC edge (not for VP8)
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#define LEFT_DC_PRED 9
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#define TOP_DC_PRED 10
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#define DC_128_PRED 11
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// RV40 specific
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#define DIAG_DOWN_LEFT_PRED_RV40_NODOWN 12
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#define HOR_UP_PRED_RV40_NODOWN 13
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#define VERT_LEFT_PRED_RV40_NODOWN 14
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// VP8 specific
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#define TM_VP8_PRED 9 ///< "True Motion", used instead of plane
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#define VERT_VP8_PRED 10 ///< for VP8, #VERT_PRED is the average of
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///< (left col+cur col x2+right col) / 4;
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///< this is the "unaveraged" one
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#define HOR_VP8_PRED 11 ///< unaveraged version of #HOR_PRED, see
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///< #VERT_VP8_PRED for details
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#define DC_127_PRED 12
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#define DC_129_PRED 13
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#define DC_PRED8x8 0
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#define HOR_PRED8x8 1
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#define VERT_PRED8x8 2
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#define PLANE_PRED8x8 3
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// DC edge
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#define LEFT_DC_PRED8x8 4
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#define TOP_DC_PRED8x8 5
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#define DC_128_PRED8x8 6
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// H264/SVQ3 (8x8) specific
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#define ALZHEIMER_DC_L0T_PRED8x8 7
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#define ALZHEIMER_DC_0LT_PRED8x8 8
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#define ALZHEIMER_DC_L00_PRED8x8 9
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#define ALZHEIMER_DC_0L0_PRED8x8 10
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// VP8 specific
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#define DC_127_PRED8x8 7
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#define DC_129_PRED8x8 8
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//@}
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/**
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* Context for storing H.264 prediction functions
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*/
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typedef struct H264PredContext{
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void (*pred4x4 [9+3+3])(uint8_t *src, const uint8_t *topright, int stride);//FIXME move to dsp?
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void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
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void (*pred8x8 [4+3+4])(uint8_t *src, int stride);
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void (*pred16x16[4+3+2])(uint8_t *src, int stride);
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void (*pred4x4_add [2])(uint8_t *pix/*align 4*/, const DCTELEM *block/*align 16*/, int stride);
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void (*pred8x8l_add [2])(uint8_t *pix/*align 8*/, const DCTELEM *block/*align 16*/, int stride);
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void (*pred8x8_add [3])(uint8_t *pix/*align 8*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
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void (*pred16x16_add[3])(uint8_t *pix/*align 16*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
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}H264PredContext;
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void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth);
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void ff_h264_pred_init_arm(H264PredContext *h, int codec_id, const int bit_depth);
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void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, const int bit_depth);
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#endif /* AVCODEC_H264PRED_H */
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