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FFmpeg/libavcodec/dsputil.h

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  1. /*

  2.  * DSP utils

  3.  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard

  4.  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

  8.  * FFmpeg is free software; you can redistribute it and/or

  9.  * modify it under the terms of the GNU Lesser General Public

  10.  * License as published by the Free Software Foundation; either

  11.  * version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * FFmpeg is distributed in the hope that it will be useful,

  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  16.  * Lesser General Public License for more details.

  17.  *

  18.  * You should have received a copy of the GNU Lesser General Public

  19.  * License along with FFmpeg; if not, write to the Free Software

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. /**

  24.  * @file libavcodec/dsputil.h

  25.  * DSP utils.

  26.  * note, many functions in here may use MMX which trashes the FPU state, it is

  27.  * absolutely necessary to call emms_c() between dsp & float/double code

  28.  */

  29. 

  30. #ifndef AVCODEC_DSPUTIL_H

  31. #define AVCODEC_DSPUTIL_H

  32. 

  33. #include "libavutil/intreadwrite.h"

  34. #include "avcodec.h"

  35. 

  36. 

  37. //#define DEBUG

  38. /* dct code */

  39. typedef short DCTELEM;

  40. typedef int DWTELEM;

  41. typedef short IDWTELEM;

  42. 

  43. void fdct_ifast (DCTELEM *data);

  44. void fdct_ifast248 (DCTELEM *data);

  45. void ff_jpeg_fdct_islow (DCTELEM *data);

  46. void ff_fdct248_islow (DCTELEM *data);

  47. 

  48. void j_rev_dct (DCTELEM *data);

  49. void j_rev_dct4 (DCTELEM *data);

  50. void j_rev_dct2 (DCTELEM *data);

  51. void j_rev_dct1 (DCTELEM *data);

  52. void ff_wmv2_idct_c(DCTELEM *data);

  53. 

  54. void ff_fdct_mmx(DCTELEM *block);

  55. void ff_fdct_mmx2(DCTELEM *block);

  56. void ff_fdct_sse2(DCTELEM *block);

  57. 

  58. void ff_h264_idct8_add_c(uint8_t *dst, DCTELEM *block, int stride);

  59. void ff_h264_idct_add_c(uint8_t *dst, DCTELEM *block, int stride);

  60. void ff_h264_idct8_dc_add_c(uint8_t *dst, DCTELEM *block, int stride);

  61. void ff_h264_idct_dc_add_c(uint8_t *dst, DCTELEM *block, int stride);

  62. void ff_h264_lowres_idct_add_c(uint8_t *dst, int stride, DCTELEM *block);

  63. void ff_h264_lowres_idct_put_c(uint8_t *dst, int stride, DCTELEM *block);

  64. void ff_h264_idct_add16_c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);

  65. void ff_h264_idct_add16intra_c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);

  66. void ff_h264_idct8_add4_c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);

  67. void ff_h264_idct_add8_c(uint8_t **dest, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);

  68. 

  69. void ff_vector_fmul_add_add_c(float *dst, const float *src0, const float *src1,

  70.                               const float *src2, int src3, int blocksize, int step);

  71. void ff_vector_fmul_window_c(float *dst, const float *src0, const float *src1,

  72.                              const float *win, float add_bias, int len);

  73. void ff_float_to_int16_c(int16_t *dst, const float *src, long len);

  74. void ff_float_to_int16_interleave_c(int16_t *dst, const float **src, long len, int channels);

  75. 

  76. /* encoding scans */

  77. extern const uint8_t ff_alternate_horizontal_scan[64];

  78. extern const uint8_t ff_alternate_vertical_scan[64];

  79. extern const uint8_t ff_zigzag_direct[64];

  80. extern const uint8_t ff_zigzag248_direct[64];

  81. 

  82. /* pixel operations */

  83. #define MAX_NEG_CROP 1024

  84. 

  85. /* temporary */

  86. extern uint32_t ff_squareTbl[512];

  87. extern uint8_t ff_cropTbl[256 + 2 * MAX_NEG_CROP];

  88. 

  89. /* VP3 DSP functions */

  90. void ff_vp3_idct_c(DCTELEM *block/* align 16*/);

  91. void ff_vp3_idct_put_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);

  92. void ff_vp3_idct_add_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);

  93. 

  94. void ff_vp3_v_loop_filter_c(uint8_t *src, int stride, int *bounding_values);

  95. void ff_vp3_h_loop_filter_c(uint8_t *src, int stride, int *bounding_values);

  96. 

  97. /* 1/2^n downscaling functions from imgconvert.c */

  98. void ff_img_copy_plane(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);

  99. void ff_shrink22(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);

  100. void ff_shrink44(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);

  101. void ff_shrink88(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);

  102. 

  103. void ff_gmc_c(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int oy,

  104.               int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);

  105. 

  106. /* minimum alignment rules ;)

  107. If you notice errors in the align stuff, need more alignment for some ASM code

  108. for some CPU or need to use a function with less aligned data then send a mail

  109. to the ffmpeg-devel mailing list, ...

  110. 

  111. !warning These alignments might not match reality, (missing attribute((align))

  112. stuff somewhere possible).

  113. I (Michael) did not check them, these are just the alignments which I think

  114. could be reached easily ...

  115. 

  116. !future video codecs might need functions with less strict alignment

  117. */

  118. 

  119. /*

  120. void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);

  121. void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);

  122. void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);

  123. void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);

  124. void clear_blocks_c(DCTELEM *blocks);

  125. */

  126. 

  127. /* add and put pixel (decoding) */

  128. // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16

  129. //h for op_pixels_func is limited to {width/2, width} but never larger than 16 and never smaller then 4

  130. typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);

  131. 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);

  132. typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);

  133. typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);

  134. typedef void (*h264_weight_func)(uint8_t *block, int stride, int log2_denom, int weight, int offset);

  135. typedef void (*h264_biweight_func)(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offset);

  136. 

  137. #define DEF_OLD_QPEL(name)\

  138. void ff_put_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\

  139. void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\

  140. void ff_avg_        ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);

  141. 

  142. DEF_OLD_QPEL(qpel16_mc11_old_c)

  143. DEF_OLD_QPEL(qpel16_mc31_old_c)

  144. DEF_OLD_QPEL(qpel16_mc12_old_c)

  145. DEF_OLD_QPEL(qpel16_mc32_old_c)

  146. DEF_OLD_QPEL(qpel16_mc13_old_c)

  147. DEF_OLD_QPEL(qpel16_mc33_old_c)

  148. DEF_OLD_QPEL(qpel8_mc11_old_c)

  149. DEF_OLD_QPEL(qpel8_mc31_old_c)

  150. DEF_OLD_QPEL(qpel8_mc12_old_c)

  151. DEF_OLD_QPEL(qpel8_mc32_old_c)

  152. DEF_OLD_QPEL(qpel8_mc13_old_c)

  153. DEF_OLD_QPEL(qpel8_mc33_old_c)

  154. 

  155. #define CALL_2X_PIXELS(a, b, n)\

  156. static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\

  157.     b(block  , pixels  , line_size, h);\

  158.     b(block+n, pixels+n, line_size, h);\

  159. }

  160. 

  161. /* motion estimation */

  162. // h is limited to {width/2, width, 2*width} but never larger than 16 and never smaller then 2

  163. // although currently h<4 is not used as functions with width <8 are neither used nor implemented

  164. 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))*/;

  165. 

  166. 

  167. // for snow slices

  168. typedef struct slice_buffer_s slice_buffer;

  169. 

  170. /**

  171.  * Scantable.

  172.  */

  173. typedef struct ScanTable{

  174.     const uint8_t *scantable;

  175.     uint8_t permutated[64];

  176.     uint8_t raster_end[64];

  177. #if ARCH_PPC

  178.                 /** Used by dct_quantize_altivec to find last-non-zero */

  179.     DECLARE_ALIGNED(16, uint8_t, inverse[64]);

  180. #endif

  181. } ScanTable;

  182. 

  183. void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);

  184. 

  185. void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize,

  186.                          int block_w, int block_h,

  187.                          int src_x, int src_y, int w, int h);

  188. 

  189. /**

  190.  * DSPContext.

  191.  */

  192. typedef struct DSPContext {

  193.     /* pixel ops : interface with DCT */

  194.     void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);

  195.     void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);

  196.     void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);

  197.     void (*put_signed_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);

  198.     void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);

  199.     void (*add_pixels8)(uint8_t *pixels, DCTELEM *block, int line_size);

  200.     void (*add_pixels4)(uint8_t *pixels, DCTELEM *block, int line_size);

  201.     int (*sum_abs_dctelem)(DCTELEM *block/*align 16*/);

  202.     /**

  203.      * translational global motion compensation.

  204.      */

  205.     void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);

  206.     /**

  207.      * global motion compensation.

  208.      */

  209.     void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,

  210.                     int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);

  211.     void (*clear_block)(DCTELEM *block/*align 16*/);

  212.     void (*clear_blocks)(DCTELEM *blocks/*align 16*/);

  213.     int (*pix_sum)(uint8_t * pix, int line_size);

  214.     int (*pix_norm1)(uint8_t * pix, int line_size);

  215. // 16x16 8x8 4x4 2x2 16x8 8x4 4x2 8x16 4x8 2x4

  216. 

  217.     me_cmp_func sad[5]; /* identical to pix_absAxA except additional void * */

  218.     me_cmp_func sse[5];

  219.     me_cmp_func hadamard8_diff[5];

  220.     me_cmp_func dct_sad[5];

  221.     me_cmp_func quant_psnr[5];

  222.     me_cmp_func bit[5];

  223.     me_cmp_func rd[5];

  224.     me_cmp_func vsad[5];

  225.     me_cmp_func vsse[5];

  226.     me_cmp_func nsse[5];

  227.     me_cmp_func w53[5];

  228.     me_cmp_func w97[5];

  229.     me_cmp_func dct_max[5];

  230.     me_cmp_func dct264_sad[5];

  231. 

  232.     me_cmp_func me_pre_cmp[5];

  233.     me_cmp_func me_cmp[5];

  234.     me_cmp_func me_sub_cmp[5];

  235.     me_cmp_func mb_cmp[5];

  236.     me_cmp_func ildct_cmp[5]; //only width 16 used

  237.     me_cmp_func frame_skip_cmp[5]; //only width 8 used

  238. 

  239.     int (*ssd_int8_vs_int16)(const int8_t *pix1, const int16_t *pix2,

  240.                              int size);

  241. 

  242.     /**

  243.      * Halfpel motion compensation with rounding (a+b+1)>>1.

  244.      * this is an array[4][4] of motion compensation functions for 4

  245.      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>

  246.      * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]

  247.      * @param block destination where the result is stored

  248.      * @param pixels source

  249.      * @param line_size number of bytes in a horizontal line of block

  250.      * @param h height

  251.      */

  252.     op_pixels_func put_pixels_tab[4][4];

  253. 

  254.     /**

  255.      * Halfpel motion compensation with rounding (a+b+1)>>1.

  256.      * This is an array[4][4] of motion compensation functions for 4

  257.      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>

  258.      * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]

  259.      * @param block destination into which the result is averaged (a+b+1)>>1

  260.      * @param pixels source

  261.      * @param line_size number of bytes in a horizontal line of block

  262.      * @param h height

  263.      */

  264.     op_pixels_func avg_pixels_tab[4][4];

  265. 

  266.     /**

  267.      * Halfpel motion compensation with no rounding (a+b)>>1.

  268.      * this is an array[2][4] of motion compensation functions for 2

  269.      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>

  270.      * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]

  271.      * @param block destination where the result is stored

  272.      * @param pixels source

  273.      * @param line_size number of bytes in a horizontal line of block

  274.      * @param h height

  275.      */

  276.     op_pixels_func put_no_rnd_pixels_tab[4][4];

  277. 

  278.     /**

  279.      * Halfpel motion compensation with no rounding (a+b)>>1.

  280.      * this is an array[2][4] of motion compensation functions for 2

  281.      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>

  282.      * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]

  283.      * @param block destination into which the result is averaged (a+b)>>1

  284.      * @param pixels source

  285.      * @param line_size number of bytes in a horizontal line of block

  286.      * @param h height

  287.      */

  288.     op_pixels_func avg_no_rnd_pixels_tab[4][4];

  289. 

  290.     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);

  291. 

  292.     /**

  293.      * Thirdpel motion compensation with rounding (a+b+1)>>1.

  294.      * this is an array[12] of motion compensation functions for the 9 thirdpe

  295.      * positions<br>

  296.      * *pixels_tab[ xthirdpel + 4*ythirdpel ]

  297.      * @param block destination where the result is stored

  298.      * @param pixels source

  299.      * @param line_size number of bytes in a horizontal line of block

  300.      * @param h height

  301.      */

  302.     tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?

  303.     tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?

  304. 

  305.     qpel_mc_func put_qpel_pixels_tab[2][16];

  306.     qpel_mc_func avg_qpel_pixels_tab[2][16];

  307.     qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];

  308.     qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];

  309.     qpel_mc_func put_mspel_pixels_tab[8];

  310. 

  311.     /**

  312.      * h264 Chroma MC

  313.      */

  314.     h264_chroma_mc_func put_h264_chroma_pixels_tab[3];

  315.     /* This is really one func used in VC-1 decoding */

  316.     h264_chroma_mc_func put_no_rnd_h264_chroma_pixels_tab[3];

  317.     h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];

  318. 

  319.     qpel_mc_func put_h264_qpel_pixels_tab[4][16];

  320.     qpel_mc_func avg_h264_qpel_pixels_tab[4][16];

  321. 

  322.     qpel_mc_func put_2tap_qpel_pixels_tab[4][16];

  323.     qpel_mc_func avg_2tap_qpel_pixels_tab[4][16];

  324. 

  325.     h264_weight_func weight_h264_pixels_tab[10];

  326.     h264_biweight_func biweight_h264_pixels_tab[10];

  327. 

  328.     /* AVS specific */

  329.     qpel_mc_func put_cavs_qpel_pixels_tab[2][16];

  330.     qpel_mc_func avg_cavs_qpel_pixels_tab[2][16];

  331.     void (*cavs_filter_lv)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);

  332.     void (*cavs_filter_lh)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);

  333.     void (*cavs_filter_cv)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);

  334.     void (*cavs_filter_ch)(uint8_t *pix, int stride, int alpha, int beta, int tc, int bs1, int bs2);

  335.     void (*cavs_idct8_add)(uint8_t *dst, DCTELEM *block, int stride);

  336. 

  337.     me_cmp_func pix_abs[2][4];

  338. 

  339.     /* huffyuv specific */

  340.     void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);

  341.     void (*add_bytes_l2)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 16*/, int w);

  342.     void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);

  343.     /**

  344.      * subtract huffyuv's variant of median prediction

  345.      * note, this might read from src1[-1], src2[-1]

  346.      */

  347.     void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);

  348.     void (*add_hfyu_median_prediction)(uint8_t *dst, uint8_t *top, uint8_t *diff, int w, int *left, int *left_top);

  349.     /* this might write to dst[w] */

  350.     void (*add_png_paeth_prediction)(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp);

  351.     void (*bswap_buf)(uint32_t *dst, const uint32_t *src, int w);

  352. 

  353.     void (*h264_v_loop_filter_luma)(uint8_t *pix/*align 16*/, int stride, int alpha, int beta, int8_t *tc0);

  354.     void (*h264_h_loop_filter_luma)(uint8_t *pix/*align 4 */, int stride, int alpha, int beta, int8_t *tc0);

  355.     /* v/h_loop_filter_luma_intra: align 16 */

  356.     void (*h264_v_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta);

  357.     void (*h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta);

  358.     void (*h264_v_loop_filter_chroma)(uint8_t *pix/*align 8*/, int stride, int alpha, int beta, int8_t *tc0);

  359.     void (*h264_h_loop_filter_chroma)(uint8_t *pix/*align 4*/, int stride, int alpha, int beta, int8_t *tc0);

  360.     void (*h264_v_loop_filter_chroma_intra)(uint8_t *pix/*align 8*/, int stride, int alpha, int beta);

  361.     void (*h264_h_loop_filter_chroma_intra)(uint8_t *pix/*align 8*/, int stride, int alpha, int beta);

  362.     // h264_loop_filter_strength: simd only. the C version is inlined in h264.c

  363.     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],

  364.                                       int bidir, int edges, int step, int mask_mv0, int mask_mv1, int field);

  365. 

  366.     void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale);

  367.     void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale);

  368. 

  369.     void (*h261_loop_filter)(uint8_t *src, int stride);

  370. 

  371.     void (*x8_v_loop_filter)(uint8_t *src, int stride, int qscale);

  372.     void (*x8_h_loop_filter)(uint8_t *src, int stride, int qscale);

  373. 

  374.     void (*vp3_v_loop_filter)(uint8_t *src, int stride, int *bounding_values);

  375.     void (*vp3_h_loop_filter)(uint8_t *src, int stride, int *bounding_values);

  376. 

  377.     /* assume len is a multiple of 4, and arrays are 16-byte aligned */

  378.     void (*vorbis_inverse_coupling)(float *mag, float *ang, int blocksize);

  379.     void (*ac3_downmix)(float (*samples)[256], float (*matrix)[2], int out_ch, int in_ch, int len);

  380.     /* no alignment needed */

  381.     void (*flac_compute_autocorr)(const int32_t *data, int len, int lag, double *autoc);

  382.     /* assume len is a multiple of 8, and arrays are 16-byte aligned */

  383.     void (*vector_fmul)(float *dst, const float *src, int len);

  384.     void (*vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len);

  385.     /* assume len is a multiple of 8, and src arrays are 16-byte aligned */

  386.     void (*vector_fmul_add_add)(float *dst, const float *src0, const float *src1, const float *src2, int src3, int len, int step);

  387.     /* assume len is a multiple of 4, and arrays are 16-byte aligned */

  388.     void (*vector_fmul_window)(float *dst, const float *src0, const float *src1, const float *win, float add_bias, int len);

  389.     /* assume len is a multiple of 8, and arrays are 16-byte aligned */

  390.     void (*int32_to_float_fmul_scalar)(float *dst, const int *src, float mul, int len);

  391. 

  392.     /* C version: convert floats from the range [384.0,386.0] to ints in [-32768,32767]

  393.      * simd versions: convert floats from [-32768.0,32767.0] without rescaling and arrays are 16byte aligned */

  394.     void (*float_to_int16)(int16_t *dst, const float *src, long len);

  395.     void (*float_to_int16_interleave)(int16_t *dst, const float **src, long len, int channels);

  396. 

  397.     /* (I)DCT */

  398.     void (*fdct)(DCTELEM *block/* align 16*/);

  399.     void (*fdct248)(DCTELEM *block/* align 16*/);

  400. 

  401.     /* IDCT really*/

  402.     void (*idct)(DCTELEM *block/* align 16*/);

  403. 

  404.     /**

  405.      * block -> idct -> clip to unsigned 8 bit -> dest.

  406.      * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)

  407.      * @param line_size size in bytes of a horizontal line of dest

  408.      */

  409.     void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);

  410. 

  411.     /**

  412.      * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.

  413.      * @param line_size size in bytes of a horizontal line of dest

  414.      */

  415.     void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);

  416. 

  417.     /**

  418.      * idct input permutation.

  419.      * several optimized IDCTs need a permutated input (relative to the normal order of the reference

  420.      * IDCT)

  421.      * this permutation must be performed before the idct_put/add, note, normally this can be merged

  422.      * with the zigzag/alternate scan<br>

  423.      * an example to avoid confusion:

  424.      * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)

  425.      * - (x -> referece dct -> reference idct -> x)

  426.      * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)

  427.      * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)

  428.      */

  429.     uint8_t idct_permutation[64];

  430.     int idct_permutation_type;

  431. #define FF_NO_IDCT_PERM 1

  432. #define FF_LIBMPEG2_IDCT_PERM 2

  433. #define FF_SIMPLE_IDCT_PERM 3

  434. #define FF_TRANSPOSE_IDCT_PERM 4

  435. #define FF_PARTTRANS_IDCT_PERM 5

  436. #define FF_SSE2_IDCT_PERM 6

  437. 

  438.     int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);

  439.     void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);

  440. #define BASIS_SHIFT 16

  441. #define RECON_SHIFT 6

  442. 

  443.     void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);

  444. #define EDGE_WIDTH 16

  445. 

  446.     /* h264 functions */

  447.     /* NOTE!!! if you implement any of h264_idct8_add, h264_idct8_add4 then you must implement all of them

  448.        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

  449.         The reason for above, is that no 2 out of one list may use a different permutation.

  450.     */

  451.     void (*h264_idct_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride);

  452.     void (*h264_idct8_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride);

  453.     void (*h264_idct_dc_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride);

  454.     void (*h264_idct8_dc_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride);

  455.     void (*h264_dct)(DCTELEM block[4][4]);

  456.     void (*h264_idct_add16)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);

  457.     void (*h264_idct8_add4)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);

  458.     void (*h264_idct_add8)(uint8_t **dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);

  459.     void (*h264_idct_add16intra)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]);

  460. 

  461.     /* snow wavelet */

  462.     void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);

  463.     void (*horizontal_compose97i)(IDWTELEM *b, int width);

  464.     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);

  465. 

  466.     void (*prefetch)(void *mem, int stride, int h);

  467. 

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

  469. 

  470.     /* vc1 functions */

  471.     void (*vc1_inv_trans_8x8)(DCTELEM *b);

  472.     void (*vc1_inv_trans_8x4)(uint8_t *dest, int line_size, DCTELEM *block);

  473.     void (*vc1_inv_trans_4x8)(uint8_t *dest, int line_size, DCTELEM *block);

  474.     void (*vc1_inv_trans_4x4)(uint8_t *dest, int line_size, DCTELEM *block);

  475.     void (*vc1_v_overlap)(uint8_t* src, int stride);

  476.     void (*vc1_h_overlap)(uint8_t* src, int stride);

  477.     /* put 8x8 block with bicubic interpolation and quarterpel precision

  478.      * last argument is actually round value instead of height

  479.      */

  480.     op_pixels_func put_vc1_mspel_pixels_tab[16];

  481. 

  482.     /* intrax8 functions */

  483.     void (*x8_spatial_compensation[12])(uint8_t *src , uint8_t *dst, int linesize);

  484.     void (*x8_setup_spatial_compensation)(uint8_t *src, uint8_t *dst, int linesize,

  485.            int * range, int * sum,  int edges);

  486. 

  487.     /* ape functions */

  488.     /**

  489.      * Add contents of the second vector to the first one.

  490.      * @param len length of vectors, should be multiple of 16

  491.      */

  492.     void (*add_int16)(int16_t *v1/*align 16*/, int16_t *v2, int len);

  493.     /**

  494.      * Add contents of the second vector to the first one.

  495.      * @param len length of vectors, should be multiple of 16

  496.      */

  497.     void (*sub_int16)(int16_t *v1/*align 16*/, int16_t *v2, int len);

  498.     /**

  499.      * Calculate scalar product of two vectors.

  500.      * @param len length of vectors, should be multiple of 16

  501.      * @param shift number of bits to discard from product

  502.      */

  503.     int32_t (*scalarproduct_int16)(int16_t *v1, int16_t *v2/*align 16*/, int len, int shift);

  504. 

  505.     /* rv30 functions */

  506.     qpel_mc_func put_rv30_tpel_pixels_tab[4][16];

  507.     qpel_mc_func avg_rv30_tpel_pixels_tab[4][16];

  508. 

  509.     /* rv40 functions */

  510.     qpel_mc_func put_rv40_qpel_pixels_tab[4][16];

  511.     qpel_mc_func avg_rv40_qpel_pixels_tab[4][16];

  512.     h264_chroma_mc_func put_rv40_chroma_pixels_tab[3];

  513.     h264_chroma_mc_func avg_rv40_chroma_pixels_tab[3];

  514. } DSPContext;

  515. 

  516. void dsputil_static_init(void);

  517. void dsputil_init(DSPContext* p, AVCodecContext *avctx);

  518. 

  519. int ff_check_alignment(void);

  520. 

  521. /**

  522.  * permute block according to permuatation.

  523.  * @param last last non zero element in scantable order

  524.  */

  525. void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);

  526. 

  527. void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type);

  528. 

  529. #define         BYTE_VEC32(c)   ((c)*0x01010101UL)

  530. 

  531. static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)

  532. {

  533.     return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);

  534. }

  535. 

  536. static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)

  537. {

  538.     return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);

  539. }

  540. 

  541. static inline int get_penalty_factor(int lambda, int lambda2, int type){

  542.     switch(type&0xFF){

  543.     default:

  544.     case FF_CMP_SAD:

  545.         return lambda>>FF_LAMBDA_SHIFT;

  546.     case FF_CMP_DCT:

  547.         return (3*lambda)>>(FF_LAMBDA_SHIFT+1);

  548.     case FF_CMP_W53:

  549.         return (4*lambda)>>(FF_LAMBDA_SHIFT);

  550.     case FF_CMP_W97:

  551.         return (2*lambda)>>(FF_LAMBDA_SHIFT);

  552.     case FF_CMP_SATD:

  553.     case FF_CMP_DCT264:

  554.         return (2*lambda)>>FF_LAMBDA_SHIFT;

  555.     case FF_CMP_RD:

  556.     case FF_CMP_PSNR:

  557.     case FF_CMP_SSE:

  558.     case FF_CMP_NSSE:

  559.         return lambda2>>FF_LAMBDA_SHIFT;

  560.     case FF_CMP_BIT:

  561.         return 1;

  562.     }

  563. }

  564. 

  565. /**

  566.  * Empty mmx state.

  567.  * this must be called between any dsp function and float/double code.

  568.  * for example sin(); dsp->idct_put(); emms_c(); cos()

  569.  */

  570. #define emms_c()

  571. 

  572. /* should be defined by architectures supporting

  573.    one or more MultiMedia extension */

  574. int mm_support(void);

  575. 

  576. void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);

  577. void dsputil_init_arm(DSPContext* c, AVCodecContext *avctx);

  578. void dsputil_init_bfin(DSPContext* c, AVCodecContext *avctx);

  579. void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);

  580. void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);

  581. void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);

  582. void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);

  583. void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);

  584. void dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);

  585. 

  586. #define DECLARE_ALIGNED_16(t, v) DECLARE_ALIGNED(16, t, v)

  587. 

  588. #if HAVE_MMX

  589. 

  590. #undef emms_c

  591. 

  592. extern int mm_flags;

  593. 

  594. void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);

  595. void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);

  596. void put_signed_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);

  597. 

  598. static inline void emms(void)

  599. {

  600.     __asm__ volatile ("emms;":::"memory");

  601. }

  602. 

  603. 

  604. #define emms_c() \

  605. {\

  606.     if (mm_flags & FF_MM_MMX)\

  607.         emms();\

  608. }

  609. 

  610. void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);

  611. 

  612. #elif ARCH_ARM

  613. 

  614. extern int mm_flags;

  615. 

  616. #if HAVE_NEON

  617. #   define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)

  618. #   define STRIDE_ALIGN 16

  619. #endif

  620. 

  621. #elif ARCH_PPC

  622. 

  623. extern int mm_flags;

  624. 

  625. #define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)

  626. #define STRIDE_ALIGN 16

  627. 

  628. #elif HAVE_MMI

  629. 

  630. #define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(16, t, v)

  631. #define STRIDE_ALIGN 16

  632. 

  633. #else

  634. 

  635. #define mm_flags 0

  636. #define mm_support() 0

  637. 

  638. #endif

  639. 

  640. #ifndef DECLARE_ALIGNED_8

  641. #   define DECLARE_ALIGNED_8(t, v) DECLARE_ALIGNED(8, t, v)

  642. #endif

  643. 

  644. #ifndef STRIDE_ALIGN

  645. #   define STRIDE_ALIGN 8

  646. #endif

  647. 

  648. /* PSNR */

  649. void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],

  650.               int orig_linesize[3], int coded_linesize,

  651.               AVCodecContext *avctx);

  652. 

  653. /* FFT computation */

  654. 

  655. /* NOTE: soon integer code will be added, so you must use the

  656.    FFTSample type */

  657. typedef float FFTSample;

  658. 

  659. struct MDCTContext;

  660. 

  661. typedef struct FFTComplex {

  662.     FFTSample re, im;

  663. } FFTComplex;

  664. 

  665. typedef struct FFTContext {

  666.     int nbits;

  667.     int inverse;

  668.     uint16_t *revtab;

  669.     FFTComplex *exptab;

  670.     FFTComplex *exptab1; /* only used by SSE code */

  671.     FFTComplex *tmp_buf;

  672.     void (*fft_permute)(struct FFTContext *s, FFTComplex *z);

  673.     void (*fft_calc)(struct FFTContext *s, FFTComplex *z);

  674.     void (*imdct_calc)(struct MDCTContext *s, FFTSample *output, const FFTSample *input);

  675.     void (*imdct_half)(struct MDCTContext *s, FFTSample *output, const FFTSample *input);

  676. } FFTContext;

  677. 

  678. extern FFTSample* ff_cos_tabs[13];

  679. 

  680. /**

  681.  * Sets up a complex FFT.

  682.  * @param nbits           log2 of the length of the input array

  683.  * @param inverse         if 0 perform the forward transform, if 1 perform the inverse

  684.  */

  685. int ff_fft_init(FFTContext *s, int nbits, int inverse);

  686. void ff_fft_permute_c(FFTContext *s, FFTComplex *z);

  687. void ff_fft_permute_sse(FFTContext *s, FFTComplex *z);

  688. void ff_fft_calc_c(FFTContext *s, FFTComplex *z);

  689. void ff_fft_calc_sse(FFTContext *s, FFTComplex *z);

  690. void ff_fft_calc_3dn(FFTContext *s, FFTComplex *z);

  691. void ff_fft_calc_3dn2(FFTContext *s, FFTComplex *z);

  692. void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z);

  693. 

  694. /**

  695.  * Do the permutation needed BEFORE calling ff_fft_calc().

  696.  */

  697. static inline void ff_fft_permute(FFTContext *s, FFTComplex *z)

  698. {

  699.     s->fft_permute(s, z);

  700. }

  701. /**

  702.  * Do a complex FFT with the parameters defined in ff_fft_init(). The

  703.  * input data must be permuted before. No 1.0/sqrt(n) normalization is done.

  704.  */

  705. static inline void ff_fft_calc(FFTContext *s, FFTComplex *z)

  706. {

  707.     s->fft_calc(s, z);

  708. }

  709. void ff_fft_end(FFTContext *s);

  710. 

  711. /* MDCT computation */

  712. 

  713. typedef struct MDCTContext {

  714.     int n;  /* size of MDCT (i.e. number of input data * 2) */

  715.     int nbits; /* n = 2^nbits */

  716.     /* pre/post rotation tables */

  717.     FFTSample *tcos;

  718.     FFTSample *tsin;

  719.     FFTContext fft;

  720. } MDCTContext;

  721. 

  722. static inline void ff_imdct_calc(MDCTContext *s, FFTSample *output, const FFTSample *input)

  723. {

  724.     s->fft.imdct_calc(s, output, input);

  725. }

  726. static inline void ff_imdct_half(MDCTContext *s, FFTSample *output, const FFTSample *input)

  727. {

  728.     s->fft.imdct_half(s, output, input);

  729. }

  730. 

  731. /**

  732.  * Generate a Kaiser-Bessel Derived Window.

  733.  * @param   window  pointer to half window

  734.  * @param   alpha   determines window shape

  735.  * @param   n       size of half window

  736.  */

  737. void ff_kbd_window_init(float *window, float alpha, int n);

  738. 

  739. /**

  740.  * Generate a sine window.

  741.  * @param   window  pointer to half window

  742.  * @param   n       size of half window

  743.  */

  744. void ff_sine_window_init(float *window, int n);

  745. extern float ff_sine_128 [ 128];

  746. extern float ff_sine_256 [ 256];

  747. extern float ff_sine_512 [ 512];

  748. extern float ff_sine_1024[1024];

  749. extern float ff_sine_2048[2048];

  750. extern float ff_sine_4096[4096];

  751. extern float *ff_sine_windows[6];

  752. 

  753. int ff_mdct_init(MDCTContext *s, int nbits, int inverse);

  754. void ff_imdct_calc_c(MDCTContext *s, FFTSample *output, const FFTSample *input);

  755. void ff_imdct_half_c(MDCTContext *s, FFTSample *output, const FFTSample *input);

  756. void ff_imdct_calc_3dn(MDCTContext *s, FFTSample *output, const FFTSample *input);

  757. void ff_imdct_half_3dn(MDCTContext *s, FFTSample *output, const FFTSample *input);

  758. void ff_imdct_calc_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *input);

  759. void ff_imdct_half_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *input);

  760. void ff_imdct_calc_sse(MDCTContext *s, FFTSample *output, const FFTSample *input);

  761. void ff_imdct_half_sse(MDCTContext *s, FFTSample *output, const FFTSample *input);

  762. void ff_mdct_calc(MDCTContext *s, FFTSample *out, const FFTSample *input);

  763. void ff_mdct_end(MDCTContext *s);

  764. 

  765. /* Real Discrete Fourier Transform */

  766. 

  767. enum RDFTransformType {

  768.     RDFT,

  769.     IRDFT,

  770.     RIDFT,

  771.     IRIDFT,

  772. };

  773. 

  774. typedef struct {

  775.     int nbits;

  776.     int inverse;

  777.     int sign_convention;

  778. 

  779.     /* pre/post rotation tables */

  780.     FFTSample *tcos;

  781.     FFTSample *tsin;

  782.     FFTContext fft;

  783. } RDFTContext;

  784. 

  785. /**

  786.  * Sets up a real FFT.

  787.  * @param nbits           log2 of the length of the input array

  788.  * @param trans           the type of transform

  789.  */

  790. int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans);

  791. void ff_rdft_calc(RDFTContext *s, FFTSample *data);

  792. void ff_rdft_end(RDFTContext *s);

  793. 

  794. #define WRAPPER8_16(name8, name16)\

  795. static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\

  796.     return name8(s, dst           , src           , stride, h)\

  797.           +name8(s, dst+8         , src+8         , stride, h);\

  798. }

  799. 

  800. #define WRAPPER8_16_SQ(name8, name16)\

  801. static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride, int h){\

  802.     int score=0;\

  803.     score +=name8(s, dst           , src           , stride, 8);\

  804.     score +=name8(s, dst+8         , src+8         , stride, 8);\

  805.     if(h==16){\

  806.         dst += 8*stride;\

  807.         src += 8*stride;\

  808.         score +=name8(s, dst           , src           , stride, 8);\

  809.         score +=name8(s, dst+8         , src+8         , stride, 8);\

  810.     }\

  811.     return score;\

  812. }

  813. 

  814. 

  815. static inline void copy_block2(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)

  816. {

  817.     int i;

  818.     for(i=0; i<h; i++)

  819.     {

  820.         AV_WN16(dst   , AV_RN16(src   ));

  821.         dst+=dstStride;

  822.         src+=srcStride;

  823.     }

  824. }

  825. 

  826. static inline void copy_block4(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)

  827. {

  828.     int i;

  829.     for(i=0; i<h; i++)

  830.     {

  831.         AV_WN32(dst   , AV_RN32(src   ));

  832.         dst+=dstStride;

  833.         src+=srcStride;

  834.     }

  835. }

  836. 

  837. static inline void copy_block8(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)

  838. {

  839.     int i;

  840.     for(i=0; i<h; i++)

  841.     {

  842.         AV_WN32(dst   , AV_RN32(src   ));

  843.         AV_WN32(dst+4 , AV_RN32(src+4 ));

  844.         dst+=dstStride;

  845.         src+=srcStride;

  846.     }

  847. }

  848. 

  849. static inline void copy_block9(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)

  850. {

  851.     int i;

  852.     for(i=0; i<h; i++)

  853.     {

  854.         AV_WN32(dst   , AV_RN32(src   ));

  855.         AV_WN32(dst+4 , AV_RN32(src+4 ));

  856.         dst[8]= src[8];

  857.         dst+=dstStride;

  858.         src+=srcStride;

  859.     }

  860. }

  861. 

  862. static inline void copy_block16(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)

  863. {

  864.     int i;

  865.     for(i=0; i<h; i++)

  866.     {

  867.         AV_WN32(dst   , AV_RN32(src   ));

  868.         AV_WN32(dst+4 , AV_RN32(src+4 ));

  869.         AV_WN32(dst+8 , AV_RN32(src+8 ));

  870.         AV_WN32(dst+12, AV_RN32(src+12));

  871.         dst+=dstStride;

  872.         src+=srcStride;

  873.     }

  874. }

  875. 

  876. static inline void copy_block17(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h)

  877. {

  878.     int i;

  879.     for(i=0; i<h; i++)

  880.     {

  881.         AV_WN32(dst   , AV_RN32(src   ));

  882.         AV_WN32(dst+4 , AV_RN32(src+4 ));

  883.         AV_WN32(dst+8 , AV_RN32(src+8 ));

  884.         AV_WN32(dst+12, AV_RN32(src+12));

  885.         dst[16]= src[16];

  886.         dst+=dstStride;

  887.         src+=srcStride;

  888.     }

  889. }

  890. 

  891. #endif /* AVCODEC_DSPUTIL_H */