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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. /* VP6 DSP functions */

  98. void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, int stride,

  99.                            const int16_t *h_weights, const int16_t *v_weights);

  100. 

  101. /* 1/2^n downscaling functions from imgconvert.c */

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

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

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

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

  106. 

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

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

  109. 

  110. /* minimum alignment rules ;)

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

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

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

  114. 

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

  116. stuff somewhere possible).

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

  118. could be reached easily ...

  119. 

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

  121. */

  122. 

  123. /*

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

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

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

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

  128. void clear_blocks_c(DCTELEM *blocks);

  129. */

  130. 

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

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

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

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

  135. 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);

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

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

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

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

  140. 

  141. #define DEF_OLD_QPEL(name)\

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

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

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

  145. 

  146. DEF_OLD_QPEL(qpel16_mc11_old_c)

  147. DEF_OLD_QPEL(qpel16_mc31_old_c)

  148. DEF_OLD_QPEL(qpel16_mc12_old_c)

  149. DEF_OLD_QPEL(qpel16_mc32_old_c)

  150. DEF_OLD_QPEL(qpel16_mc13_old_c)

  151. DEF_OLD_QPEL(qpel16_mc33_old_c)

  152. DEF_OLD_QPEL(qpel8_mc11_old_c)

  153. DEF_OLD_QPEL(qpel8_mc31_old_c)

  154. DEF_OLD_QPEL(qpel8_mc12_old_c)

  155. DEF_OLD_QPEL(qpel8_mc32_old_c)

  156. DEF_OLD_QPEL(qpel8_mc13_old_c)

  157. DEF_OLD_QPEL(qpel8_mc33_old_c)

  158. 

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

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

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

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

  163. }

  164. 

  165. /* motion estimation */

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

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

  168. 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))*/;

  169. 

  170. 

  171. // for snow slices

  172. typedef struct slice_buffer_s slice_buffer;

  173. 

  174. /**

  175.  * Scantable.

  176.  */

  177. typedef struct ScanTable{

  178.     const uint8_t *scantable;

  179.     uint8_t permutated[64];

  180.     uint8_t raster_end[64];

  181. #if ARCH_PPC

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

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

  184. #endif

  185. } ScanTable;

  186. 

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

  188. 

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

  190.                          int block_w, int block_h,

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

  192. 

  193. /**

  194.  * DSPContext.

  195.  */

  196. typedef struct DSPContext {

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

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

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

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

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

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

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

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

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

  206.     /**

  207.      * translational global motion compensation.

  208.      */

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

  210.     /**

  211.      * global motion compensation.

  212.      */

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

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

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

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

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

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

  219. // 16x16 8x8 4x4 2x2 16x8 8x4 4x2 8x16 4x8 2x4

  220. 

  221.     me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */

  222.     me_cmp_func sse[6];

  223.     me_cmp_func hadamard8_diff[6];

  224.     me_cmp_func dct_sad[6];

  225.     me_cmp_func quant_psnr[6];

  226.     me_cmp_func bit[6];

  227.     me_cmp_func rd[6];

  228.     me_cmp_func vsad[6];

  229.     me_cmp_func vsse[6];

  230.     me_cmp_func nsse[6];

  231.     me_cmp_func w53[6];

  232.     me_cmp_func w97[6];

  233.     me_cmp_func dct_max[6];

  234.     me_cmp_func dct264_sad[6];

  235. 

  236.     me_cmp_func me_pre_cmp[6];

  237.     me_cmp_func me_cmp[6];

  238.     me_cmp_func me_sub_cmp[6];

  239.     me_cmp_func mb_cmp[6];

  240.     me_cmp_func ildct_cmp[6]; //only width 16 used

  241.     me_cmp_func frame_skip_cmp[6]; //only width 8 used

  242. 

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

  244.                              int size);

  245. 

  246.     /**

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

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

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

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

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

  252.      * @param pixels source

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

  254.      * @param h height

  255.      */

  256.     op_pixels_func put_pixels_tab[4][4];

  257. 

  258.     /**

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

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

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

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

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

  264.      * @param pixels source

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

  266.      * @param h height

  267.      */

  268.     op_pixels_func avg_pixels_tab[4][4];

  269. 

  270.     /**

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

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

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

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

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

  276.      * @param pixels source

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

  278.      * @param h height

  279.      */

  280.     op_pixels_func put_no_rnd_pixels_tab[4][4];

  281. 

  282.     /**

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

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

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

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

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

  288.      * @param pixels source

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

  290.      * @param h height

  291.      */

  292.     op_pixels_func avg_no_rnd_pixels_tab[4][4];

  293. 

  294.     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);

  295. 

  296.     /**

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

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

  299.      * positions<br>

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

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

  302.      * @param pixels source

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

  304.      * @param h height

  305.      */

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

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

  308. 

  309.     qpel_mc_func put_qpel_pixels_tab[2][16];

  310.     qpel_mc_func avg_qpel_pixels_tab[2][16];

  311.     qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];

  312.     qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];

  313.     qpel_mc_func put_mspel_pixels_tab[8];

  314. 

  315.     /**

  316.      * h264 Chroma MC

  317.      */

  318.     h264_chroma_mc_func put_h264_chroma_pixels_tab[3];

  319.     h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];

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

  321.     h264_chroma_mc_func put_no_rnd_vc1_chroma_pixels_tab[3];

  322.     h264_chroma_mc_func avg_no_rnd_vc1_chroma_pixels_tab[3];

  323. 

  324.     qpel_mc_func put_h264_qpel_pixels_tab[4][16];

  325.     qpel_mc_func avg_h264_qpel_pixels_tab[4][16];

  326. 

  327.     qpel_mc_func put_2tap_qpel_pixels_tab[4][16];

  328.     qpel_mc_func avg_2tap_qpel_pixels_tab[4][16];

  329. 

  330.     h264_weight_func weight_h264_pixels_tab[10];

  331.     h264_biweight_func biweight_h264_pixels_tab[10];

  332. 

  333.     /* AVS specific */

  334.     qpel_mc_func put_cavs_qpel_pixels_tab[2][16];

  335.     qpel_mc_func avg_cavs_qpel_pixels_tab[2][16];

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

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

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

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

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

  341. 

  342.     me_cmp_func pix_abs[2][4];

  343. 

  344.     /* huffyuv specific */

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

  346.     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);

  354.     /* 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);

  357. 

  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);

  365.     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);

  370. 

  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);

  373. 

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

  375. 

  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. extern int mm_flags;

  602. 

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

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

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

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

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

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

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

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

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

  612. 

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

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

  615. 

  616. #if HAVE_MMX

  617. 

  618. #undef emms_c

  619. 

  620. static inline void emms(void)

  621. {

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

  623. }

  624. 

  625. 

  626. #define emms_c() \

  627. {\

  628.     if (mm_flags & FF_MM_MMX)\

  629.         emms();\

  630. }

  631. 

  632. #elif ARCH_ARM

  633. 

  634. #if HAVE_NEON

  635. #   define STRIDE_ALIGN 16

  636. #endif

  637. 

  638. #elif ARCH_PPC

  639. 

  640. #define STRIDE_ALIGN 16

  641. 

  642. #elif HAVE_MMI

  643. 

  644. #define STRIDE_ALIGN 16

  645. 

  646. #else

  647. 

  648. #define mm_flags 0

  649. #define mm_support() 0

  650. 

  651. #endif

  652. 

  653. #ifndef STRIDE_ALIGN

  654. #   define STRIDE_ALIGN 8

  655. #endif

  656. 

  657. /* PSNR */

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

  659.               int orig_linesize[3], int coded_linesize,

  660.               AVCodecContext *avctx);

  661. 

  662. /* FFT computation */

  663. 

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

  665.    FFTSample type */

  666. typedef float FFTSample;

  667. 

  668. typedef struct FFTComplex {

  669.     FFTSample re, im;

  670. } FFTComplex;

  671. 

  672. typedef struct FFTContext {

  673.     int nbits;

  674.     int inverse;

  675.     uint16_t *revtab;

  676.     FFTComplex *exptab;

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

  678.     FFTComplex *tmp_buf;

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

  680.     int mdct_bits; /* n = 2^nbits */

  681.     /* pre/post rotation tables */

  682.     FFTSample *tcos;

  683.     FFTSample *tsin;

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

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

  686.     void (*imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);

  687.     void (*imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input);

  688.     void (*mdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);

  689.     int split_radix;

  690. } FFTContext;

  691. 

  692. extern FFTSample* const ff_cos_tabs[13];

  693. 

  694. /**

  695.  * Sets up a complex FFT.

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

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

  698.  */

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

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

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

  702. 

  703. void ff_fft_init_altivec(FFTContext *s);

  704. void ff_fft_init_mmx(FFTContext *s);

  705. void ff_fft_init_arm(FFTContext *s);

  706. 

  707. /**

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

  709.  */

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

  711. {

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

  713. }

  714. /**

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

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

  717.  */

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

  719. {

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

  721. }

  722. void ff_fft_end(FFTContext *s);

  723. 

  724. /* MDCT computation */

  725. 

  726. static inline void ff_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input)

  727. {

  728.     s->imdct_calc(s, output, input);

  729. }

  730. static inline void ff_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input)

  731. {

  732.     s->imdct_half(s, output, input);

  733. }

  734. 

  735. static inline void ff_mdct_calc(FFTContext *s, FFTSample *output,

  736.                                 const FFTSample *input)

  737. {

  738.     s->mdct_calc(s, output, input);

  739. }

  740. 

  741. /**

  742.  * Generate a Kaiser-Bessel Derived Window.

  743.  * @param   window  pointer to half window

  744.  * @param   alpha   determines window shape

  745.  * @param   n       size of half window

  746.  */

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

  748. 

  749. /**

  750.  * Generate a sine window.

  751.  * @param   window  pointer to half window

  752.  * @param   n       size of half window

  753.  */

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

  755. extern float ff_sine_32  [  32];

  756. extern float ff_sine_64  [  64];

  757. extern float ff_sine_128 [ 128];

  758. extern float ff_sine_256 [ 256];

  759. extern float ff_sine_512 [ 512];

  760. extern float ff_sine_1024[1024];

  761. extern float ff_sine_2048[2048];

  762. extern float ff_sine_4096[4096];

  763. extern float * const ff_sine_windows[13];

  764. 

  765. int ff_mdct_init(FFTContext *s, int nbits, int inverse, double scale);

  766. void ff_imdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);

  767. void ff_imdct_half_c(FFTContext *s, FFTSample *output, const FFTSample *input);

  768. void ff_mdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);

  769. void ff_mdct_end(FFTContext *s);

  770. 

  771. /* Real Discrete Fourier Transform */

  772. 

  773. enum RDFTransformType {

  774.     RDFT,

  775.     IRDFT,

  776.     RIDFT,

  777.     IRIDFT,

  778. };

  779. 

  780. typedef struct {

  781.     int nbits;

  782.     int inverse;

  783.     int sign_convention;

  784. 

  785.     /* pre/post rotation tables */

  786.     FFTSample *tcos;

  787.     FFTSample *tsin;

  788.     FFTContext fft;

  789. } RDFTContext;

  790. 

  791. /**

  792.  * Sets up a real FFT.

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

  794.  * @param trans           the type of transform

  795.  */

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

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

  798. void ff_rdft_end(RDFTContext *s);

  799. 

  800. #define WRAPPER8_16(name8, name16)\

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

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

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

  804. }

  805. 

  806. #define WRAPPER8_16_SQ(name8, name16)\

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

  808.     int score=0;\

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

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

  811.     if(h==16){\

  812.         dst += 8*stride;\

  813.         src += 8*stride;\

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

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

  816.     }\

  817.     return score;\

  818. }

  819. 

  820. 

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

  822. {

  823.     int i;

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

  825.     {

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

  827.         dst+=dstStride;

  828.         src+=srcStride;

  829.     }

  830. }

  831. 

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

  833. {

  834.     int i;

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

  836.     {

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

  838.         dst+=dstStride;

  839.         src+=srcStride;

  840.     }

  841. }

  842. 

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

  844. {

  845.     int i;

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

  847.     {

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

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

  850.         dst+=dstStride;

  851.         src+=srcStride;

  852.     }

  853. }

  854. 

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

  856. {

  857.     int i;

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

  859.     {

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

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

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

  863.         dst+=dstStride;

  864.         src+=srcStride;

  865.     }

  866. }

  867. 

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

  869. {

  870.     int i;

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

  872.     {

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

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

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

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

  877.         dst+=dstStride;

  878.         src+=srcStride;

  879.     }

  880. }

  881. 

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

  883. {

  884.     int i;

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

  886.     {

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

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

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

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

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

  892.         dst+=dstStride;

  893.         src+=srcStride;

  894.     }

  895. }

  896. 

  897. #endif /* AVCODEC_DSPUTIL_H */