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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 libavcodec/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 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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//#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_h264_idct_add16_c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);
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void ff_h264_idct_add16intra_c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);
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void ff_h264_idct8_add4_c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);
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void ff_h264_idct_add8_c(uint8_t **dest, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);
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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_vector_fmul_window_c(float *dst, const float *src0, const float *src1,
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                             const float *win, float add_bias, int len);
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void ff_float_to_int16_c(int16_t *dst, const float *src, long len);
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void ff_float_to_int16_interleave_c(int16_t *dst, const float **src, long len, int channels);
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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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void ff_vp3_v_loop_filter_c(uint8_t *src, int stride, int *bounding_values);
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void ff_vp3_h_loop_filter_c(uint8_t *src, int stride, int *bounding_values);
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/* VP6 DSP functions */
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void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, int stride,
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                           const int16_t *h_weights, const int16_t *v_weights);
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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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#if ARCH_PPC
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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_block)(DCTELEM *block/*align 16*/);
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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[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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     * 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
317
     */
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    h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
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    h264_chroma_mc_func avg_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_vc1_chroma_pixels_tab[3];
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    h264_chroma_mc_func avg_no_rnd_vc1_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);
347
    void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
348
    /**
349
     * subtract huffyuv's variant of median prediction
350
     * note, this might read from src1[-1], src2[-1]
351
     */
352
    void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);
353
    void (*add_hfyu_median_prediction)(uint8_t *dst, uint8_t *top, uint8_t *diff, int w, int *left, int *left_top);
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    /* this might write to dst[w] */
355
    void (*add_png_paeth_prediction)(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp);
356
    void (*bswap_buf)(uint32_t *dst, const uint32_t *src, int w);
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358
    void (*h264_v_loop_filter_luma)(uint8_t *pix/*align 16*/, int stride, int alpha, int beta, int8_t *tc0);
359
    void (*h264_h_loop_filter_luma)(uint8_t *pix/*align 4 */, int stride, int alpha, int beta, int8_t *tc0);
360
    /* v/h_loop_filter_luma_intra: align 16 */
361
    void (*h264_v_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta);
362
    void (*h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta);
363
    void (*h264_v_loop_filter_chroma)(uint8_t *pix/*align 8*/, int stride, int alpha, int beta, int8_t *tc0);
364
    void (*h264_h_loop_filter_chroma)(uint8_t *pix/*align 4*/, int stride, int alpha, int beta, int8_t *tc0);
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    void (*h264_v_loop_filter_chroma_intra)(uint8_t *pix/*align 8*/, int stride, int alpha, int beta);
366
    void (*h264_h_loop_filter_chroma_intra)(uint8_t *pix/*align 8*/, int stride, int alpha, int beta);
367
    // h264_loop_filter_strength: simd only. the C version is inlined in h264.c
368
    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],
369
                                      int bidir, int edges, int step, int mask_mv0, int mask_mv1, int field);
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371
    void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale);
372
    void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale);
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374
    void (*h261_loop_filter)(uint8_t *src, int stride);
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376
    void (*x8_v_loop_filter)(uint8_t *src, int stride, int qscale);
377
    void (*x8_h_loop_filter)(uint8_t *src, int stride, int qscale);
378

    
379
    void (*vp3_v_loop_filter)(uint8_t *src, int stride, int *bounding_values);
380
    void (*vp3_h_loop_filter)(uint8_t *src, int stride, int *bounding_values);
381

    
382
    void (*vp6_filter_diag4)(uint8_t *dst, uint8_t *src, int stride,
383
                             const int16_t *h_weights,const int16_t *v_weights);
384

    
385
    /* assume len is a multiple of 4, and arrays are 16-byte aligned */
386
    void (*vorbis_inverse_coupling)(float *mag, float *ang, int blocksize);
387
    void (*ac3_downmix)(float (*samples)[256], float (*matrix)[2], int out_ch, int in_ch, int len);
388
    /* no alignment needed */
389
    void (*flac_compute_autocorr)(const int32_t *data, int len, int lag, double *autoc);
390
    /* assume len is a multiple of 8, and arrays are 16-byte aligned */
391
    void (*vector_fmul)(float *dst, const float *src, int len);
392
    void (*vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len);
393
    /* assume len is a multiple of 8, and src arrays are 16-byte aligned */
394
    void (*vector_fmul_add_add)(float *dst, const float *src0, const float *src1, const float *src2, int src3, int len, int step);
395
    /* assume len is a multiple of 4, and arrays are 16-byte aligned */
396
    void (*vector_fmul_window)(float *dst, const float *src0, const float *src1, const float *win, float add_bias, int len);
397
    /* assume len is a multiple of 8, and arrays are 16-byte aligned */
398
    void (*int32_to_float_fmul_scalar)(float *dst, const int *src, float mul, int len);
399
    void (*vector_clipf)(float *dst /* align 16 */, const float *src /* align 16 */, float min, float max, int len /* align 16 */);
400

    
401
    /* C version: convert floats from the range [384.0,386.0] to ints in [-32768,32767]
402
     * simd versions: convert floats from [-32768.0,32767.0] without rescaling and arrays are 16byte aligned */
403
    void (*float_to_int16)(int16_t *dst, const float *src, long len);
404
    void (*float_to_int16_interleave)(int16_t *dst, const float **src, long len, int channels);
405

    
406
    /* (I)DCT */
407
    void (*fdct)(DCTELEM *block/* align 16*/);
408
    void (*fdct248)(DCTELEM *block/* align 16*/);
409

    
410
    /* IDCT really*/
411
    void (*idct)(DCTELEM *block/* align 16*/);
412

    
413
    /**
414
     * block -> idct -> clip to unsigned 8 bit -> dest.
415
     * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
416
     * @param line_size size in bytes of a horizontal line of dest
417
     */
418
    void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
419

    
420
    /**
421
     * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
422
     * @param line_size size in bytes of a horizontal line of dest
423
     */
424
    void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
425

    
426
    /**
427
     * idct input permutation.
428
     * several optimized IDCTs need a permutated input (relative to the normal order of the reference
429
     * IDCT)
430
     * this permutation must be performed before the idct_put/add, note, normally this can be merged
431
     * with the zigzag/alternate scan<br>
432
     * an example to avoid confusion:
433
     * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
434
     * - (x -> referece dct -> reference idct -> x)
435
     * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
436
     * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
437
     */
438
    uint8_t idct_permutation[64];
439
    int idct_permutation_type;
440
#define FF_NO_IDCT_PERM 1
441
#define FF_LIBMPEG2_IDCT_PERM 2
442
#define FF_SIMPLE_IDCT_PERM 3
443
#define FF_TRANSPOSE_IDCT_PERM 4
444
#define FF_PARTTRANS_IDCT_PERM 5
445
#define FF_SSE2_IDCT_PERM 6
446

    
447
    int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);
448
    void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
449
#define BASIS_SHIFT 16
450
#define RECON_SHIFT 6
451

    
452
    void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
453
#define EDGE_WIDTH 16
454

    
455
    /* h264 functions */
456
    /* NOTE!!! if you implement any of h264_idct8_add, h264_idct8_add4 then you must implement all of them
457
       NOTE!!! if you implement any of h264_idct_add, h264_idct_add16, h264_idct_add16intra, h264_idct_add8 then you must implement all of them
458
        The reason for above, is that no 2 out of one list may use a different permutation.
459
    */
460
    void (*h264_idct_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride);
461
    void (*h264_idct8_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride);
462
    void (*h264_idct_dc_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride);
463
    void (*h264_idct8_dc_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride);
464
    void (*h264_dct)(DCTELEM block[4][4]);
465
    void (*h264_idct_add16)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);
466
    void (*h264_idct8_add4)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);
467
    void (*h264_idct_add8)(uint8_t **dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);
468
    void (*h264_idct_add16intra)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);
469

    
470
    /* snow wavelet */
471
    void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
472
    void (*horizontal_compose97i)(IDWTELEM *b, int width);
473
    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);
474

    
475
    void (*prefetch)(void *mem, int stride, int h);
476

    
477
    void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
478

    
479
    /* mlp/truehd functions */
480
    void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff,
481
                               int firorder, int iirorder,
482
                               unsigned int filter_shift, int32_t mask, int blocksize,
483
                               int32_t *sample_buffer);
484

    
485
    /* vc1 functions */
486
    void (*vc1_inv_trans_8x8)(DCTELEM *b);
487
    void (*vc1_inv_trans_8x4)(uint8_t *dest, int line_size, DCTELEM *block);
488
    void (*vc1_inv_trans_4x8)(uint8_t *dest, int line_size, DCTELEM *block);
489
    void (*vc1_inv_trans_4x4)(uint8_t *dest, int line_size, DCTELEM *block);
490
    void (*vc1_inv_trans_8x8_dc)(uint8_t *dest, int line_size, DCTELEM *block);
491
    void (*vc1_inv_trans_8x4_dc)(uint8_t *dest, int line_size, DCTELEM *block);
492
    void (*vc1_inv_trans_4x8_dc)(uint8_t *dest, int line_size, DCTELEM *block);
493
    void (*vc1_inv_trans_4x4_dc)(uint8_t *dest, int line_size, DCTELEM *block);
494
    void (*vc1_v_overlap)(uint8_t* src, int stride);
495
    void (*vc1_h_overlap)(uint8_t* src, int stride);
496
    void (*vc1_v_loop_filter4)(uint8_t *src, int stride, int pq);
497
    void (*vc1_h_loop_filter4)(uint8_t *src, int stride, int pq);
498
    void (*vc1_v_loop_filter8)(uint8_t *src, int stride, int pq);
499
    void (*vc1_h_loop_filter8)(uint8_t *src, int stride, int pq);
500
    void (*vc1_v_loop_filter16)(uint8_t *src, int stride, int pq);
501
    void (*vc1_h_loop_filter16)(uint8_t *src, int stride, int pq);
502
    /* put 8x8 block with bicubic interpolation and quarterpel precision
503
     * last argument is actually round value instead of height
504
     */
505
    op_pixels_func put_vc1_mspel_pixels_tab[16];
506
    op_pixels_func avg_vc1_mspel_pixels_tab[16];
507

    
508
    /* intrax8 functions */
509
    void (*x8_spatial_compensation[12])(uint8_t *src , uint8_t *dst, int linesize);
510
    void (*x8_setup_spatial_compensation)(uint8_t *src, uint8_t *dst, int linesize,
511
           int * range, int * sum,  int edges);
512

    
513
    /* ape functions */
514
    /**
515
     * Add contents of the second vector to the first one.
516
     * @param len length of vectors, should be multiple of 16
517
     */
518
    void (*add_int16)(int16_t *v1/*align 16*/, int16_t *v2, int len);
519
    /**
520
     * Add contents of the second vector to the first one.
521
     * @param len length of vectors, should be multiple of 16
522
     */
523
    void (*sub_int16)(int16_t *v1/*align 16*/, int16_t *v2, int len);
524
    /**
525
     * Calculate scalar product of two vectors.
526
     * @param len length of vectors, should be multiple of 16
527
     * @param shift number of bits to discard from product
528
     */
529
    int32_t (*scalarproduct_int16)(int16_t *v1, int16_t *v2/*align 16*/, int len, int shift);
530

    
531
    /* rv30 functions */
532
    qpel_mc_func put_rv30_tpel_pixels_tab[4][16];
533
    qpel_mc_func avg_rv30_tpel_pixels_tab[4][16];
534

    
535
    /* rv40 functions */
536
    qpel_mc_func put_rv40_qpel_pixels_tab[4][16];
537
    qpel_mc_func avg_rv40_qpel_pixels_tab[4][16];
538
    h264_chroma_mc_func put_rv40_chroma_pixels_tab[3];
539
    h264_chroma_mc_func avg_rv40_chroma_pixels_tab[3];
540
} DSPContext;
541

    
542
void dsputil_static_init(void);
543
void dsputil_init(DSPContext* p, AVCodecContext *avctx);
544

    
545
int ff_check_alignment(void);
546

    
547
/**
548
 * permute block according to permuatation.
549
 * @param last last non zero element in scantable order
550
 */
551
void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
552

    
553
void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type);
554

    
555
#define         BYTE_VEC32(c)   ((c)*0x01010101UL)
556

    
557
static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
558
{
559
    return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
560
}
561

    
562
static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
563
{
564
    return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
565
}
566

    
567
static inline int get_penalty_factor(int lambda, int lambda2, int type){
568
    switch(type&0xFF){
569
    default:
570
    case FF_CMP_SAD:
571
        return lambda>>FF_LAMBDA_SHIFT;
572
    case FF_CMP_DCT:
573
        return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
574
    case FF_CMP_W53:
575
        return (4*lambda)>>(FF_LAMBDA_SHIFT);
576
    case FF_CMP_W97:
577
        return (2*lambda)>>(FF_LAMBDA_SHIFT);
578
    case FF_CMP_SATD:
579
    case FF_CMP_DCT264:
580
        return (2*lambda)>>FF_LAMBDA_SHIFT;
581
    case FF_CMP_RD:
582
    case FF_CMP_PSNR:
583
    case FF_CMP_SSE:
584
    case FF_CMP_NSSE:
585
        return lambda2>>FF_LAMBDA_SHIFT;
586
    case FF_CMP_BIT:
587
        return 1;
588
    }
589
}
590

    
591
/**
592
 * Empty mmx state.
593
 * this must be called between any dsp function and float/double code.
594
 * for example sin(); dsp->idct_put(); emms_c(); cos()
595
 */
596
#define emms_c()
597

    
598
/* should be defined by architectures supporting
599
   one or more MultiMedia extension */
600
int mm_support(void);
601

    
602
void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
603
void dsputil_init_arm(DSPContext* c, AVCodecContext *avctx);
604
void dsputil_init_bfin(DSPContext* c, AVCodecContext *avctx);
605
void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
606
void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
607
void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
608
void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
609
void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
610
void dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);
611

    
612
#define DECLARE_ALIGNED_16(t, v) DECLARE_ALIGNED(16, t, v)
613

    
614
#if HAVE_MMX
615

    
616
#undef emms_c
617

    
618
extern int mm_flags;
619

    
620
void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
621
void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
622
void put_signed_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
623

    
624
static inline void emms(void)
625
{
626
    __asm__ volatile ("emms;":::"memory");
627
}
628

    
629

    
630
#define emms_c() \
631
{\
632
    if (mm_flags & FF_MM_MMX)\
633
        emms();\
634
}
635

    
636
void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
637

    
638
#elif ARCH_ARM
639

    
640
extern int mm_flags;
641

    
642
#if HAVE_NEON
643
#   define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)
644
#   define STRIDE_ALIGN 16
645
#endif
646

    
647
#elif ARCH_PPC
648

    
649
extern int mm_flags;
650

    
651
#define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)
652
#define STRIDE_ALIGN 16
653

    
654
#elif HAVE_MMI
655

    
656
#define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)
657
#define STRIDE_ALIGN 16
658

    
659
#else
660

    
661
#define mm_flags 0
662
#define mm_support() 0
663

    
664
#endif
665

    
666
#ifndef DECLARE_ALIGNED_8
667
#   define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(8, t, v)
668
#endif
669

    
670
#ifndef STRIDE_ALIGN
671
#   define STRIDE_ALIGN 8
672
#endif
673

    
674
/* PSNR */
675
void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
676
              int orig_linesize[3], int coded_linesize,
677
              AVCodecContext *avctx);
678

    
679
/* FFT computation */
680

    
681
/* NOTE: soon integer code will be added, so you must use the
682
   FFTSample type */
683
typedef float FFTSample;
684

    
685
struct MDCTContext;
686

    
687
typedef struct FFTComplex {
688
    FFTSample re, im;
689
} FFTComplex;
690

    
691
typedef struct FFTContext {
692
    int nbits;
693
    int inverse;
694
    uint16_t *revtab;
695
    FFTComplex *exptab;
696
    FFTComplex *exptab1; /* only used by SSE code */
697
    FFTComplex *tmp_buf;
698
    void (*fft_permute)(struct FFTContext *s, FFTComplex *z);
699
    void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
700
    void (*imdct_calc)(struct MDCTContext *s, FFTSample *output, const FFTSample *input);
701
    void (*imdct_half)(struct MDCTContext *s, FFTSample *output, const FFTSample *input);
702
} FFTContext;
703

    
704
extern FFTSample* ff_cos_tabs[13];
705

    
706
/**
707
 * Sets up a complex FFT.
708
 * @param nbits           log2 of the length of the input array
709
 * @param inverse         if 0 perform the forward transform, if 1 perform the inverse
710
 */
711
int ff_fft_init(FFTContext *s, int nbits, int inverse);
712
void ff_fft_permute_c(FFTContext *s, FFTComplex *z);
713
void ff_fft_permute_sse(FFTContext *s, FFTComplex *z);
714
void ff_fft_calc_c(FFTContext *s, FFTComplex *z);
715
void ff_fft_calc_sse(FFTContext *s, FFTComplex *z);
716
void ff_fft_calc_3dn(FFTContext *s, FFTComplex *z);
717
void ff_fft_calc_3dn2(FFTContext *s, FFTComplex *z);
718
void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z);
719

    
720
/**
721
 * Do the permutation needed BEFORE calling ff_fft_calc().
722
 */
723
static inline void ff_fft_permute(FFTContext *s, FFTComplex *z)
724
{
725
    s->fft_permute(s, z);
726
}
727
/**
728
 * Do a complex FFT with the parameters defined in ff_fft_init(). The
729
 * input data must be permuted before. No 1.0/sqrt(n) normalization is done.
730
 */
731
static inline void ff_fft_calc(FFTContext *s, FFTComplex *z)
732
{
733
    s->fft_calc(s, z);
734
}
735
void ff_fft_end(FFTContext *s);
736

    
737
/* MDCT computation */
738

    
739
typedef struct MDCTContext {
740
    int n;  /* size of MDCT (i.e. number of input data * 2) */
741
    int nbits; /* n = 2^nbits */
742
    /* pre/post rotation tables */
743
    FFTSample *tcos;
744
    FFTSample *tsin;
745
    FFTContext fft;
746
} MDCTContext;
747

    
748
static inline void ff_imdct_calc(MDCTContext *s, FFTSample *output, const FFTSample *input)
749
{
750
    s->fft.imdct_calc(s, output, input);
751
}
752
static inline void ff_imdct_half(MDCTContext *s, FFTSample *output, const FFTSample *input)
753
{
754
    s->fft.imdct_half(s, output, input);
755
}
756

    
757
/**
758
 * Generate a Kaiser-Bessel Derived Window.
759
 * @param   window  pointer to half window
760
 * @param   alpha   determines window shape
761
 * @param   n       size of half window
762
 */
763
void ff_kbd_window_init(float *window, float alpha, int n);
764

    
765
/**
766
 * Generate a sine window.
767
 * @param   window  pointer to half window
768
 * @param   n       size of half window
769
 */
770
void ff_sine_window_init(float *window, int n);
771
extern float ff_sine_128 [ 128];
772
extern float ff_sine_256 [ 256];
773
extern float ff_sine_512 [ 512];
774
extern float ff_sine_1024[1024];
775
extern float ff_sine_2048[2048];
776
extern float ff_sine_4096[4096];
777
extern float *ff_sine_windows[6];
778

    
779
int ff_mdct_init(MDCTContext *s, int nbits, int inverse, double scale);
780
void ff_imdct_calc_c(MDCTContext *s, FFTSample *output, const FFTSample *input);
781
void ff_imdct_half_c(MDCTContext *s, FFTSample *output, const FFTSample *input);
782
void ff_imdct_calc_3dn(MDCTContext *s, FFTSample *output, const FFTSample *input);
783
void ff_imdct_half_3dn(MDCTContext *s, FFTSample *output, const FFTSample *input);
784
void ff_imdct_calc_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *input);
785
void ff_imdct_half_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *input);
786
void ff_imdct_calc_sse(MDCTContext *s, FFTSample *output, const FFTSample *input);
787
void ff_imdct_half_sse(MDCTContext *s, FFTSample *output, const FFTSample *input);
788
void ff_mdct_calc(MDCTContext *s, FFTSample *out, const FFTSample *input);
789
void ff_mdct_end(MDCTContext *s);
790

    
791
/* Real Discrete Fourier Transform */
792

    
793
enum RDFTransformType {
794
    RDFT,
795
    IRDFT,
796
    RIDFT,
797
    IRIDFT,
798
};
799

    
800
typedef struct {
801
    int nbits;
802
    int inverse;
803
    int sign_convention;
804

    
805
    /* pre/post rotation tables */
806
    FFTSample *tcos;
807
    FFTSample *tsin;
808
    FFTContext fft;
809
} RDFTContext;
810

    
811
/**
812
 * Sets up a real FFT.
813
 * @param nbits           log2 of the length of the input array
814
 * @param trans           the type of transform
815
 */
816
int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans);
817
void ff_rdft_calc(RDFTContext *s, FFTSample *data);
818
void ff_rdft_end(RDFTContext *s);
819

    
820
#define WRAPPER8_16(name8, name16)\
821
static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\
822
    return name8(s, dst           , src           , stride, h)\
823
          +name8(s, dst+8         , src+8         , stride, h);\
824
}
825

    
826
#define WRAPPER8_16_SQ(name8, name16)\
827
static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\
828
    int score=0;\
829
    score +=name8(s, dst           , src           , stride, 8);\
830
    score +=name8(s, dst+8         , src+8         , stride, 8);\
831
    if(h==16){\
832
        dst += 8*stride;\
833
        src += 8*stride;\
834
        score +=name8(s, dst           , src           , stride, 8);\
835
        score +=name8(s, dst+8         , src+8         , stride, 8);\
836
    }\
837
    return score;\
838
}
839

    
840

    
841
static inline void copy_block2(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
842
{
843
    int i;
844
    for(i=0; i<h; i++)
845
    {
846
        AV_WN16(dst   , AV_RN16(src   ));
847
        dst+=dstStride;
848
        src+=srcStride;
849
    }
850
}
851

    
852
static inline void copy_block4(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
853
{
854
    int i;
855
    for(i=0; i<h; i++)
856
    {
857
        AV_WN32(dst   , AV_RN32(src   ));
858
        dst+=dstStride;
859
        src+=srcStride;
860
    }
861
}
862

    
863
static inline void copy_block8(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
864
{
865
    int i;
866
    for(i=0; i<h; i++)
867
    {
868
        AV_WN32(dst   , AV_RN32(src   ));
869
        AV_WN32(dst+4 , AV_RN32(src+4 ));
870
        dst+=dstStride;
871
        src+=srcStride;
872
    }
873
}
874

    
875
static inline void copy_block9(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
876
{
877
    int i;
878
    for(i=0; i<h; i++)
879
    {
880
        AV_WN32(dst   , AV_RN32(src   ));
881
        AV_WN32(dst+4 , AV_RN32(src+4 ));
882
        dst[8]= src[8];
883
        dst+=dstStride;
884
        src+=srcStride;
885
    }
886
}
887

    
888
static inline void copy_block16(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
889
{
890
    int i;
891
    for(i=0; i<h; i++)
892
    {
893
        AV_WN32(dst   , AV_RN32(src   ));
894
        AV_WN32(dst+4 , AV_RN32(src+4 ));
895
        AV_WN32(dst+8 , AV_RN32(src+8 ));
896
        AV_WN32(dst+12, AV_RN32(src+12));
897
        dst+=dstStride;
898
        src+=srcStride;
899
    }
900
}
901

    
902
static inline void copy_block17(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
903
{
904
    int i;
905
    for(i=0; i<h; i++)
906
    {
907
        AV_WN32(dst   , AV_RN32(src   ));
908
        AV_WN32(dst+4 , AV_RN32(src+4 ));
909
        AV_WN32(dst+8 , AV_RN32(src+8 ));
910
        AV_WN32(dst+12, AV_RN32(src+12));
911
        dst[16]= src[16];
912
        dst+=dstStride;
913
        src+=srcStride;
914
    }
915
}
916

    
917
#endif /* AVCODEC_DSPUTIL_H */