/* * DSP utils * Copyright (c) 2000, 2001, 2002 Fabrice Bellard. * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> * * This library 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 of the License, or (at your option) any later version. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA *//** * @file dsputil.h * DSP utils. * note, many functions in here may use MMX which trashes the FPU state, it is * absolutely necessary to call emms_c() between dsp & float/double code */#ifndef DSPUTIL_H#define DSPUTIL_H#include "common.h"#include "avcodec.h"//#define DEBUG/* dct code */typedef short DCTELEM;void fdct_ifast (DCTELEM *data);void fdct_ifast248 (DCTELEM *data);void ff_jpeg_fdct_islow (DCTELEM *data);void ff_fdct248_islow (DCTELEM *data);void j_rev_dct (DCTELEM *data);void ff_fdct_mmx(DCTELEM *block);void ff_fdct_mmx2(DCTELEM *block);void ff_fdct_sse2(DCTELEM *block);/* encoding scans */extern const uint8_t ff_alternate_horizontal_scan[64];extern const uint8_t ff_alternate_vertical_scan[64];extern const uint8_t ff_zigzag_direct[64];extern const uint8_t ff_zigzag248_direct[64];/* pixel operations */#define MAX_NEG_CROP 384/* temporary */extern uint32_t squareTbl[512];extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];/* VP3 DSP functions */void vp3_dsp_init_c(void);void vp3_idct_put_c(int16_t *input_data, int16_t *dequant_matrix,    int coeff_count, uint8_t *dest, int stride);void vp3_idct_add_c(int16_t *input_data, int16_t *dequant_matrix,    int coeff_count, uint8_t *dest, int stride);void vp3_dsp_init_mmx(void);void vp3_idct_put_mmx(int16_t *input_data, int16_t *dequant_matrix,    int coeff_count, uint8_t *dest, int stride);void vp3_idct_add_mmx(int16_t *input_data, int16_t *dequant_matrix,    int coeff_count, uint8_t *dest, int stride);/* minimum alignment rules ;)if u notice errors in the align stuff, need more alignment for some asm code for some cpuor need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)i (michael) didnt check them, these are just the alignents which i think could be reached easily ...!future video codecs might need functions with less strict alignment*//*void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);void clear_blocks_c(DCTELEM *blocks);*//* add and put pixel (decoding) */// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16//h for op_pixels_func is limited to {width/2, width} but never larger than 16 and never smaller then 4typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);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);typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);#define DEF_OLD_QPEL(name)\void ff_put_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\void ff_avg_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);DEF_OLD_QPEL(qpel16_mc11_old_c)DEF_OLD_QPEL(qpel16_mc31_old_c)DEF_OLD_QPEL(qpel16_mc12_old_c)DEF_OLD_QPEL(qpel16_mc32_old_c)DEF_OLD_QPEL(qpel16_mc13_old_c)DEF_OLD_QPEL(qpel16_mc33_old_c)DEF_OLD_QPEL(qpel8_mc11_old_c)DEF_OLD_QPEL(qpel8_mc31_old_c)DEF_OLD_QPEL(qpel8_mc12_old_c)DEF_OLD_QPEL(qpel8_mc32_old_c)DEF_OLD_QPEL(qpel8_mc13_old_c)DEF_OLD_QPEL(qpel8_mc33_old_c)#define CALL_2X_PIXELS(a, b, n)\static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\    b(block  , pixels  , line_size, h);\    b(block+n, pixels+n, line_size, h);\}/* motion estimation */// h is limited to {width/2, width, 2*width} but never larger than 16 and never smaller then 2// allthough currently h<4 is not used as functions with width <8 are not used and neither implementedtypedef 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))*/;/** * DSPContext. */typedef struct DSPContext {    /* pixel ops : interface with DCT */    void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);    void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);    void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);    void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);    /**     * translational global motion compensation.     */    void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);    /**     * global motion compensation.     */    void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,		    int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);    void (*clear_blocks)(DCTELEM *blocks/*align 16*/);    int (*pix_sum)(uint8_t * pix, int line_size);    int (*pix_norm1)(uint8_t * pix, int line_size);// 16x16 8x8 4x4 2x2 16x8 8x4 4x2 8x16 4x8 2x4        me_cmp_func sad[5]; /* identical to pix_absAxA except additional void * */    me_cmp_func sse[5];    me_cmp_func hadamard8_diff[5];    me_cmp_func dct_sad[5];    me_cmp_func quant_psnr[5];    me_cmp_func bit[5];    me_cmp_func rd[5];    me_cmp_func vsad[5];    me_cmp_func vsse[5];    me_cmp_func me_pre_cmp[5];    me_cmp_func me_cmp[5];    me_cmp_func me_sub_cmp[5];    me_cmp_func mb_cmp[5];    me_cmp_func ildct_cmp[5]; //only width 16 used    /**     * Halfpel motion compensation with rounding (a+b+1)>>1.     * this is an array[4][4] of motion compensation funcions for 4      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]     * @param block destination where the result is stored     * @param pixels source     * @param line_size number of bytes in a horizontal line of block     * @param h height     */    op_pixels_func put_pixels_tab[4][4];    /**     * Halfpel motion compensation with rounding (a+b+1)>>1.     * This is an array[4][4] of motion compensation functions for 4      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]     * @param block destination into which the result is averaged (a+b+1)>>1     * @param pixels source     * @param line_size number of bytes in a horizontal line of block     * @param h height     */    op_pixels_func avg_pixels_tab[4][4];    /**     * Halfpel motion compensation with no rounding (a+b)>>1.     * this is an array[2][4] of motion compensation funcions for 2      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]     * @param block destination where the result is stored     * @param pixels source     * @param line_size number of bytes in a horizontal line of block     * @param h height     */    op_pixels_func put_no_rnd_pixels_tab[2][4];    /**     * Halfpel motion compensation with no rounding (a+b)>>1.     * this is an array[2][4] of motion compensation funcions for 2      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]     * @param block destination into which the result is averaged (a+b)>>1     * @param pixels source     * @param line_size number of bytes in a horizontal line of block     * @param h height     */    op_pixels_func avg_no_rnd_pixels_tab[2][4];        void (*put_no_rnd_pixels_l2[2])(uint8_t *block/*align width (8 or 16)*/, const uint8_t *a/*align 1*/, const uint8_t *b/*align 1*/, int line_size, int h);        /**     * Thirdpel motion compensation with rounding (a+b+1)>>1.     * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>     * *pixels_tab[ xthirdpel + 4*ythirdpel ]     * @param block destination where the result is stored     * @param pixels source     * @param line_size number of bytes in a horizontal line of block     * @param h height     */    tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?    tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?    qpel_mc_func put_qpel_pixels_tab[2][16];    qpel_mc_func avg_qpel_pixels_tab[2][16];    qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];    qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];    qpel_mc_func put_mspel_pixels_tab[8];        /**     * h264 Chram MC     */    h264_chroma_mc_func put_h264_chroma_pixels_tab[3];    h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];    qpel_mc_func put_h264_qpel_pixels_tab[3][16];    qpel_mc_func avg_h264_qpel_pixels_tab[3][16];        me_cmp_func pix_abs[2][4];        /* huffyuv specific */    void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);    void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);    /**     * subtract huffyuv's variant of median prediction     * note, this might read from src1[-1], src2[-1]     */    void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);    void (*bswap_buf)(uint32_t *dst, uint32_t *src, int w);        void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale);    void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale);    /* (I)DCT */    void (*fdct)(DCTELEM *block/* align 16*/);    void (*fdct248)(DCTELEM *block/* align 16*/);        /* IDCT really*/    void (*idct)(DCTELEM *block/* align 16*/);        /**     * block -> idct -> clip to unsigned 8 bit -> dest.     * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)     * @param line_size size in bytes of a horizotal line of dest     */    void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);        /**     * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.     * @param line_size size in bytes of a horizotal line of dest     */    void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);        /**     * idct input permutation.     * several optimized IDCTs need a permutated input (relative to the normal order of the reference     * IDCT)     * this permutation must be performed before the idct_put/add, note, normally this can be merged     * with the zigzag/alternate scan<br>     * an example to avoid confusion:     * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)     * - (x -> referece dct -> reference idct -> x)     * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)     * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)     */    uint8_t idct_permutation[64];    int idct_permutation_type;#define FF_NO_IDCT_PERM 1#define FF_LIBMPEG2_IDCT_PERM 2#define FF_SIMPLE_IDCT_PERM 3#define FF_TRANSPOSE_IDCT_PERM 4    int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);    void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);#define BASIS_SHIFT 16#define RECON_SHIFT 6    /**     * This function handles any initialization for the VP3 DSP functions.     */