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/*
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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 dsputil.h
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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 FFMPEG_DSPUTIL_H
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#define FFMPEG_DSPUTIL_H
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#include "avcodec.h"
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//#define DEBUG
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/* dct code */
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typedef short DCTELEM;
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typedef int DWTELEM;
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typedef short IDWTELEM;
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void fdct_ifast (DCTELEM *data);
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void fdct_ifast248 (DCTELEM *data);
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void ff_jpeg_fdct_islow (DCTELEM *data);
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void ff_fdct248_islow (DCTELEM *data);
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void j_rev_dct (DCTELEM *data);
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void j_rev_dct4 (DCTELEM *data);
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void j_rev_dct2 (DCTELEM *data);
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void j_rev_dct1 (DCTELEM *data);
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void ff_wmv2_idct_c(DCTELEM *data);
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void ff_fdct_mmx(DCTELEM *block);
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void ff_fdct_mmx2(DCTELEM *block);
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void ff_fdct_sse2(DCTELEM *block);
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void ff_h264_idct8_add_c(uint8_t *dst, DCTELEM *block, int stride);
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void ff_h264_idct_add_c(uint8_t *dst, DCTELEM *block, int stride);
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void ff_h264_idct8_dc_add_c(uint8_t *dst, DCTELEM *block, int stride);
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void ff_h264_idct_dc_add_c(uint8_t *dst, DCTELEM *block, int stride);
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void ff_h264_lowres_idct_add_c(uint8_t *dst, int stride, DCTELEM *block);
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void ff_h264_lowres_idct_put_c(uint8_t *dst, int stride, DCTELEM *block);
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void ff_vector_fmul_add_add_c(float *dst, const float *src0, const float *src1,
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                              const float *src2, int src3, int blocksize, int step);
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void ff_float_to_int16_c(int16_t *dst, const float *src, int len);
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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 uint8_t ff_cropTbl[256 + 2 * MAX_NEG_CROP];
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/* VP3 DSP functions */
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void ff_vp3_idct_c(DCTELEM *block/* align 16*/);
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void ff_vp3_idct_put_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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void ff_vp3_idct_add_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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/* 1/2^n downscaling functions from imgconvert.c */
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void ff_img_copy_plane(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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void ff_shrink22(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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void ff_shrink44(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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void ff_shrink88(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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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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/*
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void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
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void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
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void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
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void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
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void clear_blocks_c(DCTELEM *blocks);
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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 then 4
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typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
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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*/, int stride);
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typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
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typedef void (*h264_weight_func)(uint8_t *block, int stride, int log2_denom, int weight, int offset);
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typedef void (*h264_biweight_func)(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offset);
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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*/, int stride);\
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void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
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void ff_avg_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int 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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#define CALL_2X_PIXELS(a, b, n)\
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static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
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    b(block  , pixels  , line_size, h);\
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    b(block+n, pixels+n, line_size, h);\
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}
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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 then 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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// for snow slices
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typedef struct slice_buffer_s slice_buffer;
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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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#ifdef ARCH_POWERPC
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                /** Used by dct_quantize_altivec to find last-non-zero */
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    DECLARE_ALIGNED(16, uint8_t, inverse[64]);
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#endif
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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_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize,
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                         int block_w, int block_h,
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                         int src_x, int src_y, int w, int h);
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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)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
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    void (*diff_pixels)(DCTELEM *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 DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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    void (*put_signed_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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    void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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    void (*add_pixels8)(uint8_t *pixels, DCTELEM *block, int line_size);
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    void (*add_pixels4)(uint8_t *pixels, DCTELEM *block, int line_size);
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    int (*sum_abs_dctelem)(DCTELEM *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_blocks)(DCTELEM *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[5]; /* identical to pix_absAxA except additional void * */
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    me_cmp_func sse[5];
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    me_cmp_func hadamard8_diff[5];
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    me_cmp_func dct_sad[5];
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    me_cmp_func quant_psnr[5];
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    me_cmp_func bit[5];
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    me_cmp_func rd[5];
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    me_cmp_func vsad[5];
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    me_cmp_func vsse[5];
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    me_cmp_func nsse[5];
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    me_cmp_func w53[5];
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    me_cmp_func w97[5];
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    me_cmp_func dct_max[5];
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    me_cmp_func dct264_sad[5];
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    me_cmp_func me_pre_cmp[5];
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    me_cmp_func me_cmp[5];
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    me_cmp_func me_sub_cmp[5];
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    me_cmp_func mb_cmp[5];
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    me_cmp_func ildct_cmp[5]; //only width 16 used
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    me_cmp_func frame_skip_cmp[5]; //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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     * Halfpel motion compensation with rounding (a+b+1)>>1.
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     * this is an array[4][4] of motion compensation functions for 4
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     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
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     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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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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    op_pixels_func put_pixels_tab[4][4];
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    /**
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     * Halfpel motion compensation with rounding (a+b+1)>>1.
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     * This is an array[4][4] of motion compensation functions for 4
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     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
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     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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     * @param block destination into which the result is averaged (a+b+1)>>1
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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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    op_pixels_func avg_pixels_tab[4][4];
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    /**
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     * Halfpel motion compensation with no rounding (a+b)>>1.
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     * this is an array[2][4] of motion compensation functions for 2
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     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
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     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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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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    op_pixels_func put_no_rnd_pixels_tab[4][4];
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    /**
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     * Halfpel motion compensation with no rounding (a+b)>>1.
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     * this is an array[2][4] of motion compensation functions for 2
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     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
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     * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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     * @param block destination into which the result is averaged (a+b)>>1
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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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    op_pixels_func avg_no_rnd_pixels_tab[4][4];
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    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);
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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 avg_no_rnd_qpel_pixels_tab[2][16];
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    qpel_mc_func put_mspel_pixels_tab[8];
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    /**
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     * h264 Chroma MC
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     */
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    h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
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    /* This is really one func used in VC-1 decoding */
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    h264_chroma_mc_func put_no_rnd_h264_chroma_pixels_tab[3];
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    h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
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    qpel_mc_func put_h264_qpel_pixels_tab[4][16];
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    qpel_mc_func avg_h264_qpel_pixels_tab[4][16];
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    qpel_mc_func put_2tap_qpel_pixels_tab[4][16];
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    qpel_mc_func avg_2tap_qpel_pixels_tab[4][16];
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    h264_weight_func weight_h264_pixels_tab[10];
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    h264_biweight_func biweight_h264_pixels_tab[10];
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    /* AVS specific */
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    qpel_mc_func put_cavs_qpel_pixels_tab[2][16];
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    qpel_mc_func avg_cavs_qpel_pixels_tab[2][16];
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    void (*cavs_filter_lv)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);
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    void (*cavs_filter_lh)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);
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    void (*cavs_filter_cv)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);
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    void (*cavs_filter_ch)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);
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    void (*cavs_idct8_add)(uint8_t *dst, DCTELEM *block, int stride);
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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 (*add_bytes_l2)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 16*/, int w);
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    void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, 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]
334
     */
335
    void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);
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    /* this might write to dst[w] */
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    void (*add_png_paeth_prediction)(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp);
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    void (*bswap_buf)(uint32_t *dst, const uint32_t *src, int w);
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    void (*h264_v_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0);
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    void (*h264_h_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0);
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    void (*h264_v_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0);
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    void (*h264_h_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0);
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    void (*h264_v_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta);
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    void (*h264_h_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta);
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    // h264_loop_filter_strength: simd only. the C version is inlined in h264.c
347
    void (*h264_loop_filter_strength)(int16_t bS[2][4][4], uint8_t nnz[40], int8_t ref[2][40], int16_t mv[2][40][2],
348
                                      int bidir, int edges, int step, int mask_mv0, int mask_mv1);
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    void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale);
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    void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale);
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    void (*h261_loop_filter)(uint8_t *src, int stride);
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    void (*x8_v_loop_filter)(uint8_t *src, int stride, int qscale);
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    void (*x8_h_loop_filter)(uint8_t *src, int stride, int qscale);
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    /* assume len is a multiple of 4, and arrays are 16-byte aligned */
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    void (*vorbis_inverse_coupling)(float *mag, float *ang, int blocksize);
360
    /* no alignment needed */
361
    void (*flac_compute_autocorr)(const int32_t *data, int len, int lag, double *autoc);
362
    /* assume len is a multiple of 8, and arrays are 16-byte aligned */
363
    void (*vector_fmul)(float *dst, const float *src, int len);
364
    void (*vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len);
365
    /* assume len is a multiple of 8, and src arrays are 16-byte aligned */
366
    void (*vector_fmul_add_add)(float *dst, const float *src0, const float *src1, const float *src2, int src3, int len, int step);
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368
    /* C version: convert floats from the range [384.0,386.0] to ints in [-32768,32767]
369
     * simd versions: convert floats from [-32768.0,32767.0] without rescaling and arrays are 16byte aligned */
370
    void (*float_to_int16)(int16_t *dst, const float *src, int len);
371

    
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    /* (I)DCT */
373
    void (*fdct)(DCTELEM *block/* align 16*/);
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    void (*fdct248)(DCTELEM *block/* align 16*/);
375

    
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    /* IDCT really*/
377
    void (*idct)(DCTELEM *block/* align 16*/);
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    /**
380
     * block -> idct -> clip to unsigned 8 bit -> dest.
381
     * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
382
     * @param line_size size in bytes of a horizontal line of dest
383
     */
384
    void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
385

    
386
    /**
387
     * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
388
     * @param line_size size in bytes of a horizontal line of dest
389
     */
390
    void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
391

    
392
    /**
393
     * idct input permutation.
394
     * several optimized IDCTs need a permutated input (relative to the normal order of the reference
395
     * IDCT)
396
     * this permutation must be performed before the idct_put/add, note, normally this can be merged
397
     * with the zigzag/alternate scan<br>
398
     * an example to avoid confusion:
399
     * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
400
     * - (x -> referece dct -> reference idct -> x)
401
     * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
402
     * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
403
     */
404
    uint8_t idct_permutation[64];
405
    int idct_permutation_type;
406
#define FF_NO_IDCT_PERM 1
407
#define FF_LIBMPEG2_IDCT_PERM 2
408
#define FF_SIMPLE_IDCT_PERM 3
409
#define FF_TRANSPOSE_IDCT_PERM 4
410
#define FF_PARTTRANS_IDCT_PERM 5
411

    
412
    int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);
413
    void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
414
#define BASIS_SHIFT 16
415
#define RECON_SHIFT 6
416

    
417
    void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
418
#define EDGE_WIDTH 16
419

    
420
    /* h264 functions */
421
    void (*h264_idct_add)(uint8_t *dst, DCTELEM *block, int stride);
422
    void (*h264_idct8_add)(uint8_t *dst, DCTELEM *block, int stride);
423
    void (*h264_idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
424
    void (*h264_idct8_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
425
    void (*h264_dct)(DCTELEM block[4][4]);
426

    
427
    /* snow wavelet */
428
    void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
429
    void (*horizontal_compose97i)(IDWTELEM *b, int width);
430
    void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8);
431

    
432
    void (*prefetch)(void *mem, int stride, int h);
433

    
434
    void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
435

    
436
    /* vc1 functions */
437
    void (*vc1_inv_trans_8x8)(DCTELEM *b);
438
    void (*vc1_inv_trans_8x4)(uint8_t *dest, int line_size, DCTELEM *block);
439
    void (*vc1_inv_trans_4x8)(uint8_t *dest, int line_size, DCTELEM *block);
440
    void (*vc1_inv_trans_4x4)(uint8_t *dest, int line_size, DCTELEM *block);
441
    void (*vc1_v_overlap)(uint8_t* src, int stride);
442
    void (*vc1_h_overlap)(uint8_t* src, int stride);
443
    /* put 8x8 block with bicubic interpolation and quarterpel precision
444
     * last argument is actually round value instead of height
445
     */
446
    op_pixels_func put_vc1_mspel_pixels_tab[16];
447

    
448
    /* intrax8 functions */
449
    void (*x8_spatial_compensation[12])(uint8_t *src , uint8_t *dst, int linesize);
450
    void (*x8_setup_spatial_compensation)(uint8_t *src, uint8_t *dst, int linesize,
451
           int * range, int * sum,  int edges);
452

    
453
} DSPContext;
454

    
455
void dsputil_static_init(void);
456
void dsputil_init(DSPContext* p, AVCodecContext *avctx);
457

    
458
int ff_check_alignment(void);
459

    
460
/**
461
 * permute block according to permuatation.
462
 * @param last last non zero element in scantable order
463
 */
464
void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
465

    
466
void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type);
467

    
468
#define         BYTE_VEC32(c)   ((c)*0x01010101UL)
469

    
470
static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
471
{
472
    return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
473
}
474

    
475
static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
476
{
477
    return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
478
}
479

    
480
static inline int get_penalty_factor(int lambda, int lambda2, int type){
481
    switch(type&0xFF){
482
    default:
483
    case FF_CMP_SAD:
484
        return lambda>>FF_LAMBDA_SHIFT;
485
    case FF_CMP_DCT:
486
        return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
487
    case FF_CMP_W53:
488
        return (4*lambda)>>(FF_LAMBDA_SHIFT);
489
    case FF_CMP_W97:
490
        return (2*lambda)>>(FF_LAMBDA_SHIFT);
491
    case FF_CMP_SATD:
492
    case FF_CMP_DCT264:
493
        return (2*lambda)>>FF_LAMBDA_SHIFT;
494
    case FF_CMP_RD:
495
    case FF_CMP_PSNR:
496
    case FF_CMP_SSE:
497
    case FF_CMP_NSSE:
498
        return lambda2>>FF_LAMBDA_SHIFT;
499
    case FF_CMP_BIT:
500
        return 1;
501
    }
502
}
503

    
504
/**
505
 * Empty mmx state.
506
 * this must be called between any dsp function and float/double code.
507
 * for example sin(); dsp->idct_put(); emms_c(); cos()
508
 */
509
#define emms_c()
510

    
511
/* should be defined by architectures supporting
512
   one or more MultiMedia extension */
513
int mm_support(void);
514

    
515
void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
516
void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
517
void dsputil_init_bfin(DSPContext* c, AVCodecContext *avctx);
518
void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
519
void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
520
void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
521
void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
522
void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
523
void dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);
524

    
525
#define DECLARE_ALIGNED_16(t, v) DECLARE_ALIGNED(16, t, v)
526

    
527
#if defined(HAVE_MMX)
528

    
529
#undef emms_c
530

    
531
#define MM_MMX    0x0001 /* standard MMX */
532
#define MM_3DNOW  0x0004 /* AMD 3DNOW */
533
#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
534
#define MM_SSE    0x0008 /* SSE functions */
535
#define MM_SSE2   0x0010 /* PIV SSE2 functions */
536
#define MM_3DNOWEXT  0x0020 /* AMD 3DNowExt */
537
#define MM_SSE3   0x0040 /* Prescott SSE3 functions */
538
#define MM_SSSE3  0x0080 /* Conroe SSSE3 functions */
539

    
540
extern int mm_flags;
541

    
542
void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
543
void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
544
void put_signed_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
545

    
546
static inline void emms(void)
547
{
548
    asm volatile ("emms;":::"memory");
549
}
550

    
551

    
552
#define emms_c() \
553
{\
554
    if (mm_flags & MM_MMX)\
555
        emms();\
556
}
557

    
558
void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
559

    
560
#elif defined(ARCH_ARMV4L)
561

    
562
#define MM_IWMMXT    0x0100 /* XScale IWMMXT */
563

    
564
extern int mm_flags;
565

    
566
#elif defined(ARCH_POWERPC)
567

    
568
#define MM_ALTIVEC    0x0001 /* standard AltiVec */
569

    
570
extern int mm_flags;
571

    
572
#define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)
573
#define STRIDE_ALIGN 16
574

    
575
#elif defined(HAVE_MMI)
576

    
577
#define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)
578
#define STRIDE_ALIGN 16
579

    
580
#endif
581

    
582
#ifndef DECLARE_ALIGNED_8
583
#   define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(8, t, v)
584
#endif
585

    
586
#ifndef STRIDE_ALIGN
587
#   define STRIDE_ALIGN 8
588
#endif
589

    
590
/* PSNR */
591
void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
592
              int orig_linesize[3], int coded_linesize,
593
              AVCodecContext *avctx);
594

    
595
/* FFT computation */
596

    
597
/* NOTE: soon integer code will be added, so you must use the
598
   FFTSample type */
599
typedef float FFTSample;
600

    
601
struct MDCTContext;
602

    
603
typedef struct FFTComplex {
604
    FFTSample re, im;
605
} FFTComplex;
606

    
607
typedef struct FFTContext {
608
    int nbits;
609
    int inverse;
610
    uint16_t *revtab;
611
    FFTComplex *exptab;
612
    FFTComplex *exptab1; /* only used by SSE code */
613
    void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
614
    void (*imdct_calc)(struct MDCTContext *s, FFTSample *output,
615
                       const FFTSample *input, FFTSample *tmp);
616
} FFTContext;
617

    
618
int ff_fft_init(FFTContext *s, int nbits, int inverse);
619
void ff_fft_permute(FFTContext *s, FFTComplex *z);
620
void ff_fft_calc_c(FFTContext *s, FFTComplex *z);
621
void ff_fft_calc_sse(FFTContext *s, FFTComplex *z);
622
void ff_fft_calc_3dn(FFTContext *s, FFTComplex *z);
623
void ff_fft_calc_3dn2(FFTContext *s, FFTComplex *z);
624
void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z);
625

    
626
static inline void ff_fft_calc(FFTContext *s, FFTComplex *z)
627
{
628
    s->fft_calc(s, z);
629
}
630
void ff_fft_end(FFTContext *s);
631

    
632
/* MDCT computation */
633

    
634
typedef struct MDCTContext {
635
    int n;  /* size of MDCT (i.e. number of input data * 2) */
636
    int nbits; /* n = 2^nbits */
637
    /* pre/post rotation tables */
638
    FFTSample *tcos;
639
    FFTSample *tsin;
640
    FFTContext fft;
641
} MDCTContext;
642

    
643
/**
644
 * Generate a Kaiser-Bessel Derived Window.
645
 * @param   window  pointer to half window
646
 * @param   alpha   determines window shape
647
 * @param   n       size of half window
648
 */
649
void ff_kbd_window_init(float *window, float alpha, int n);
650

    
651
int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
652
void ff_imdct_calc(MDCTContext *s, FFTSample *output,
653
                const FFTSample *input, FFTSample *tmp);
654
void ff_imdct_calc_3dn2(MDCTContext *s, FFTSample *output,
655
                        const FFTSample *input, FFTSample *tmp);
656
void ff_imdct_calc_sse(MDCTContext *s, FFTSample *output,
657
                       const FFTSample *input, FFTSample *tmp);
658
void ff_mdct_calc(MDCTContext *s, FFTSample *out,
659
               const FFTSample *input, FFTSample *tmp);
660
void ff_mdct_end(MDCTContext *s);
661

    
662
#define WRAPPER8_16(name8, name16)\
663
static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\
664
    return name8(s, dst           , src           , stride, h)\
665
          +name8(s, dst+8         , src+8         , stride, h);\
666
}
667

    
668
#define WRAPPER8_16_SQ(name8, name16)\
669
static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\
670
    int score=0;\
671
    score +=name8(s, dst           , src           , stride, 8);\
672
    score +=name8(s, dst+8         , src+8         , stride, 8);\
673
    if(h==16){\
674
        dst += 8*stride;\
675
        src += 8*stride;\
676
        score +=name8(s, dst           , src           , stride, 8);\
677
        score +=name8(s, dst+8         , src+8         , stride, 8);\
678
    }\
679
    return score;\
680
}
681

    
682

    
683
static inline void copy_block2(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)
684
{
685
    int i;
686
    for(i=0; i<h; i++)
687
    {
688
        AV_WN16(dst   , AV_RN16(src   ));
689
        dst+=dstStride;
690
        src+=srcStride;
691
    }
692
}
693

    
694
static inline void copy_block4(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)
695
{
696
    int i;
697
    for(i=0; i<h; i++)
698
    {
699
        AV_WN32(dst   , AV_RN32(src   ));
700
        dst+=dstStride;
701
        src+=srcStride;
702
    }
703
}
704

    
705
static inline void copy_block8(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)
706
{
707
    int i;
708
    for(i=0; i<h; i++)
709
    {
710
        AV_WN32(dst   , AV_RN32(src   ));
711
        AV_WN32(dst+4 , AV_RN32(src+4 ));
712
        dst+=dstStride;
713
        src+=srcStride;
714
    }
715
}
716

    
717
static inline void copy_block9(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)
718
{
719
    int i;
720
    for(i=0; i<h; i++)
721
    {
722
        AV_WN32(dst   , AV_RN32(src   ));
723
        AV_WN32(dst+4 , AV_RN32(src+4 ));
724
        dst[8]= src[8];
725
        dst+=dstStride;
726
        src+=srcStride;
727
    }
728
}
729

    
730
static inline void copy_block16(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)
731
{
732
    int i;
733
    for(i=0; i<h; i++)
734
    {
735
        AV_WN32(dst   , AV_RN32(src   ));
736
        AV_WN32(dst+4 , AV_RN32(src+4 ));
737
        AV_WN32(dst+8 , AV_RN32(src+8 ));
738
        AV_WN32(dst+12, AV_RN32(src+12));
739
        dst+=dstStride;
740
        src+=srcStride;
741
    }
742
}
743

    
744
static inline void copy_block17(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)
745
{
746
    int i;
747
    for(i=0; i<h; i++)
748
    {
749
        AV_WN32(dst   , AV_RN32(src   ));
750
        AV_WN32(dst+4 , AV_RN32(src+4 ));
751
        AV_WN32(dst+8 , AV_RN32(src+8 ));
752
        AV_WN32(dst+12, AV_RN32(src+12));
753
        dst[16]= src[16];
754
        dst+=dstStride;
755
        src+=srcStride;
756
    }
757
}
758

    
759
#endif /* FFMPEG_DSPUTIL_H */