mirror of https://git.ffmpeg.org/ffmpeg.git
316 lines
13 KiB
C
316 lines
13 KiB
C
/*
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* DSP utils
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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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
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* DSP utils.
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* note, many functions in here may use MMX which trashes the FPU state, it is
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* absolutely necessary to call emms_c() between dsp & float/double code
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*/
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#ifndef AVCODEC_DSPUTIL_H
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#define AVCODEC_DSPUTIL_H
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "rnd_avg.h"
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/* encoding scans */
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extern const uint8_t ff_alternate_horizontal_scan[64];
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extern const uint8_t ff_alternate_vertical_scan[64];
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extern const uint8_t ff_zigzag_direct[64];
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extern const uint8_t ff_zigzag248_direct[64];
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/* pixel operations */
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#define MAX_NEG_CROP 1024
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/* temporary */
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extern uint32_t ff_squareTbl[512];
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extern const uint8_t ff_cropTbl[256 + 2 * MAX_NEG_CROP];
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void ff_put_pixels8x8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_avg_pixels8x8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_put_pixels16x16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_avg_pixels16x16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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/* RV40 functions */
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void ff_put_rv40_qpel16_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_avg_rv40_qpel16_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_put_rv40_qpel8_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_avg_rv40_qpel8_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
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void ff_gmc_c(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int oy,
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int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
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/* minimum alignment rules ;)
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If you notice errors in the align stuff, need more alignment for some ASM code
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for some CPU or need to use a function with less aligned data then send a mail
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to the ffmpeg-devel mailing list, ...
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!warning These alignments might not match reality, (missing attribute((align))
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stuff somewhere possible).
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I (Michael) did not check them, these are just the alignments which I think
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could be reached easily ...
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!future video codecs might need functions with less strict alignment
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*/
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/* add and put pixel (decoding) */
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// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
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//h for op_pixels_func is limited to {width/2, width} but never larger than 16 and never smaller than 4
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typedef void (*tpel_mc_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int w, int h);
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typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, ptrdiff_t stride);
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typedef void (*op_fill_func)(uint8_t *block/*align width (8 or 16)*/, uint8_t value, int line_size, int h);
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#define DEF_OLD_QPEL(name)\
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void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, ptrdiff_t stride);\
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void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, ptrdiff_t stride);\
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void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, ptrdiff_t stride);
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DEF_OLD_QPEL(qpel16_mc11_old_c)
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DEF_OLD_QPEL(qpel16_mc31_old_c)
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DEF_OLD_QPEL(qpel16_mc12_old_c)
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DEF_OLD_QPEL(qpel16_mc32_old_c)
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DEF_OLD_QPEL(qpel16_mc13_old_c)
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DEF_OLD_QPEL(qpel16_mc33_old_c)
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DEF_OLD_QPEL(qpel8_mc11_old_c)
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DEF_OLD_QPEL(qpel8_mc31_old_c)
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DEF_OLD_QPEL(qpel8_mc12_old_c)
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DEF_OLD_QPEL(qpel8_mc32_old_c)
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DEF_OLD_QPEL(qpel8_mc13_old_c)
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DEF_OLD_QPEL(qpel8_mc33_old_c)
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/* motion estimation */
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// h is limited to {width/2, width, 2*width} but never larger than 16 and never smaller than 2
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// although currently h<4 is not used as functions with width <8 are neither used nor implemented
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typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size, int h)/* __attribute__ ((const))*/;
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/**
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* Scantable.
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*/
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typedef struct ScanTable{
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const uint8_t *scantable;
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uint8_t permutated[64];
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uint8_t raster_end[64];
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} ScanTable;
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void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
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void ff_init_scantable_permutation(uint8_t *idct_permutation,
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int idct_permutation_type);
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/**
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* DSPContext.
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*/
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typedef struct DSPContext {
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/* pixel ops : interface with DCT */
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void (*get_pixels)(int16_t *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
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void (*diff_pixels)(int16_t *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
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void (*put_pixels_clamped)(const int16_t *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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void (*put_signed_pixels_clamped)(const int16_t *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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void (*add_pixels_clamped)(const int16_t *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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void (*add_pixels8)(uint8_t *pixels, int16_t *block, int line_size);
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int (*sum_abs_dctelem)(int16_t *block/*align 16*/);
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/**
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* translational global motion compensation.
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*/
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void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
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/**
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* global motion compensation.
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*/
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void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
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int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
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void (*clear_block)(int16_t *block/*align 16*/);
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void (*clear_blocks)(int16_t *blocks/*align 16*/);
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int (*pix_sum)(uint8_t * pix, int line_size);
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int (*pix_norm1)(uint8_t * pix, int line_size);
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// 16x16 8x8 4x4 2x2 16x8 8x4 4x2 8x16 4x8 2x4
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me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
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me_cmp_func sse[6];
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me_cmp_func hadamard8_diff[6];
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me_cmp_func dct_sad[6];
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me_cmp_func quant_psnr[6];
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me_cmp_func bit[6];
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me_cmp_func rd[6];
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me_cmp_func vsad[6];
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me_cmp_func vsse[6];
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me_cmp_func nsse[6];
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me_cmp_func w53[6];
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me_cmp_func w97[6];
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me_cmp_func dct_max[6];
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me_cmp_func dct264_sad[6];
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me_cmp_func me_pre_cmp[6];
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me_cmp_func me_cmp[6];
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me_cmp_func me_sub_cmp[6];
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me_cmp_func mb_cmp[6];
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me_cmp_func ildct_cmp[6]; //only width 16 used
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me_cmp_func frame_skip_cmp[6]; //only width 8 used
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int (*ssd_int8_vs_int16)(const int8_t *pix1, const int16_t *pix2,
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int size);
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/**
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* Thirdpel motion compensation with rounding (a+b+1)>>1.
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* this is an array[12] of motion compensation functions for the 9 thirdpe
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* positions<br>
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* *pixels_tab[ xthirdpel + 4*ythirdpel ]
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* @param block destination where the result is stored
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* @param pixels source
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* @param line_size number of bytes in a horizontal line of block
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* @param h height
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*/
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tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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qpel_mc_func put_qpel_pixels_tab[2][16];
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qpel_mc_func avg_qpel_pixels_tab[2][16];
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qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
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qpel_mc_func put_mspel_pixels_tab[8];
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me_cmp_func pix_abs[2][4];
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/* huffyuv specific */
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void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
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void (*diff_bytes)(uint8_t *dst/*align 16*/, const uint8_t *src1/*align 16*/, const uint8_t *src2/*align 1*/,int w);
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/**
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* subtract huffyuv's variant of median prediction
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* note, this might read from src1[-1], src2[-1]
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*/
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void (*sub_hfyu_median_prediction)(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, int w, int *left, int *left_top);
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void (*add_hfyu_median_prediction)(uint8_t *dst, const uint8_t *top, const uint8_t *diff, int w, int *left, int *left_top);
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int (*add_hfyu_left_prediction)(uint8_t *dst, const uint8_t *src, int w, int left);
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void (*add_hfyu_left_prediction_bgr32)(uint8_t *dst, const uint8_t *src, int w, int *red, int *green, int *blue, int *alpha);
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/* this might write to dst[w] */
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void (*bswap_buf)(uint32_t *dst, const uint32_t *src, int w);
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void (*bswap16_buf)(uint16_t *dst, const uint16_t *src, int len);
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/* assume len is a multiple of 8, and arrays are 16-byte aligned */
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void (*vector_clipf)(float *dst /* align 16 */, const float *src /* align 16 */, float min, float max, int len /* align 16 */);
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/* (I)DCT */
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void (*fdct)(int16_t *block/* align 16*/);
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void (*fdct248)(int16_t *block/* align 16*/);
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/* IDCT really*/
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void (*idct)(int16_t *block/* align 16*/);
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/**
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* block -> idct -> clip to unsigned 8 bit -> dest.
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* (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
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* @param line_size size in bytes of a horizontal line of dest
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*/
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void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, int16_t *block/*align 16*/);
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/**
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* block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
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* @param line_size size in bytes of a horizontal line of dest
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*/
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void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, int16_t *block/*align 16*/);
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/**
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* idct input permutation.
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* several optimized IDCTs need a permutated input (relative to the normal order of the reference
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* IDCT)
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* this permutation must be performed before the idct_put/add, note, normally this can be merged
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* with the zigzag/alternate scan<br>
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* an example to avoid confusion:
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* - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
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* - (x -> reference dct -> reference idct -> x)
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* - (x -> reference dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
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* - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
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*/
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uint8_t idct_permutation[64];
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int idct_permutation_type;
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#define FF_NO_IDCT_PERM 1
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#define FF_LIBMPEG2_IDCT_PERM 2
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#define FF_SIMPLE_IDCT_PERM 3
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#define FF_TRANSPOSE_IDCT_PERM 4
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#define FF_PARTTRANS_IDCT_PERM 5
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#define FF_SSE2_IDCT_PERM 6
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int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);
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void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
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#define BASIS_SHIFT 16
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#define RECON_SHIFT 6
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void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides);
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#define EDGE_WIDTH 16
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#define EDGE_TOP 1
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#define EDGE_BOTTOM 2
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void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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/**
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* Calculate scalar product of two vectors.
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* @param len length of vectors, should be multiple of 16
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*/
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int32_t (*scalarproduct_int16)(const int16_t *v1, const int16_t *v2/*align 16*/, int len);
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/* ape functions */
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/**
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* Calculate scalar product of v1 and v2,
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* and v1[i] += v3[i] * mul
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* @param len length of vectors, should be multiple of 16
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*/
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int32_t (*scalarproduct_and_madd_int16)(int16_t *v1/*align 16*/, const int16_t *v2, const int16_t *v3, int len, int mul);
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/**
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* Clip each element in an array of int32_t to a given minimum and maximum value.
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* @param dst destination array
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* constraints: 16-byte aligned
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* @param src source array
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* constraints: 16-byte aligned
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* @param min minimum value
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* constraints: must be in the range [-(1 << 24), 1 << 24]
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* @param max maximum value
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* constraints: must be in the range [-(1 << 24), 1 << 24]
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* @param len number of elements in the array
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* constraints: multiple of 32 greater than zero
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*/
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void (*vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min,
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int32_t max, unsigned int len);
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op_fill_func fill_block_tab[2];
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} DSPContext;
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void ff_dsputil_static_init(void);
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void ff_dsputil_init(DSPContext* p, AVCodecContext *avctx);
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void avpriv_dsputil_init(DSPContext* p, AVCodecContext *avctx);
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attribute_deprecated void dsputil_init(DSPContext* c, AVCodecContext *avctx);
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int ff_check_alignment(void);
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void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type);
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void ff_dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_arm(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_bfin(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_x86(DSPContext* c, AVCodecContext *avctx);
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void ff_dsputil_init_dwt(DSPContext *c);
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#endif /* AVCODEC_DSPUTIL_H */
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