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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_window_c(float *dst, const float *src0, const float *src1,

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

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

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

  73. 

  74. /* encoding scans */

  75. extern const uint8_t ff_alternate_horizontal_scan[64];

  76. extern const uint8_t ff_alternate_vertical_scan[64];

  77. extern const uint8_t ff_zigzag_direct[64];

  78. extern const uint8_t ff_zigzag248_direct[64];

  79. 

  80. /* pixel operations */

  81. #define MAX_NEG_CROP 1024

  82. 

  83. /* temporary */

  84. extern uint32_t ff_squareTbl[512];

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

  86. 

  87. /* VP3 DSP functions */

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

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

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

  91. 

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

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

  94. 

  95. /* VP6 DSP functions */

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

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

  98. 

  99. /* Bink functions */

  100. void ff_bink_idct_c    (DCTELEM *block);

  101. void ff_bink_idct_add_c(uint8_t *dest, int linesize, DCTELEM *block);

  102. void ff_bink_idct_put_c(uint8_t *dest, int linesize, DCTELEM *block);

  103. 

  104. /* CAVS functions */

  105. void ff_put_cavs_qpel8_mc00_c(uint8_t *dst, uint8_t *src, int stride);

  106. void ff_avg_cavs_qpel8_mc00_c(uint8_t *dst, uint8_t *src, int stride);

  107. void ff_put_cavs_qpel16_mc00_c(uint8_t *dst, uint8_t *src, int stride);

  108. void ff_avg_cavs_qpel16_mc00_c(uint8_t *dst, uint8_t *src, int stride);

  109. 

  110. /* VC1 functions */

  111. void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);

  112. void ff_avg_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);

  113. 

  114. /* EA functions */

  115. void ff_ea_idct_put_c(uint8_t *dest, int linesize, DCTELEM *block);

  116. 

  117. /* 1/2^n downscaling functions from imgconvert.c */

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

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

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

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

  122. 

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

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

  125. 

  126. /* minimum alignment rules ;)

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

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

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

  130. 

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

  132. stuff somewhere possible).

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

  134. could be reached easily ...

  135. 

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

  137. */

  138. 

  139. /*

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

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

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

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

  144. void clear_blocks_c(DCTELEM *blocks);

  145. */

  146. 

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

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

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

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

  151. 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);

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

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

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

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

  156. 

  157. typedef void (*op_fill_func)(uint8_t *block/*align width (8 or 16)*/, uint8_t value, int line_size, int h);

  158. 

  159. #define DEF_OLD_QPEL(name)\

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

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

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

  163. 

  164. DEF_OLD_QPEL(qpel16_mc11_old_c)

  165. DEF_OLD_QPEL(qpel16_mc31_old_c)

  166. DEF_OLD_QPEL(qpel16_mc12_old_c)

  167. DEF_OLD_QPEL(qpel16_mc32_old_c)

  168. DEF_OLD_QPEL(qpel16_mc13_old_c)

  169. DEF_OLD_QPEL(qpel16_mc33_old_c)

  170. DEF_OLD_QPEL(qpel8_mc11_old_c)

  171. DEF_OLD_QPEL(qpel8_mc31_old_c)

  172. DEF_OLD_QPEL(qpel8_mc12_old_c)

  173. DEF_OLD_QPEL(qpel8_mc32_old_c)

  174. DEF_OLD_QPEL(qpel8_mc13_old_c)

  175. DEF_OLD_QPEL(qpel8_mc33_old_c)

  176. 

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

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

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

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

  181. }

  182. 

  183. /* motion estimation */

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

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

  186. 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))*/;

  187. 

  188. 

  189. // for snow slices

  190. typedef struct slice_buffer_s slice_buffer;

  191. 

  192. /**

  193.  * Scantable.

  194.  */

  195. typedef struct ScanTable{

  196.     const uint8_t *scantable;

  197.     uint8_t permutated[64];

  198.     uint8_t raster_end[64];

  199. #if ARCH_PPC

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

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

  202. #endif

  203. } ScanTable;

  204. 

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

  206. 

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

  208.                          int block_w, int block_h,

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

  210. 

  211. /**

  212.  * DSPContext.

  213.  */

  214. typedef struct DSPContext {

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

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

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

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

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

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

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

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

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

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

  225.     /**

  226.      * translational global motion compensation.

  227.      */

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

  229.     /**

  230.      * global motion compensation.

  231.      */

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

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

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

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

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

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

  238. // 16x16 8x8 4x4 2x2 16x8 8x4 4x2 8x16 4x8 2x4

  239. 

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

  241.     me_cmp_func sse[6];

  242.     me_cmp_func hadamard8_diff[6];

  243.     me_cmp_func dct_sad[6];

  244.     me_cmp_func quant_psnr[6];

  245.     me_cmp_func bit[6];

  246.     me_cmp_func rd[6];

  247.     me_cmp_func vsad[6];

  248.     me_cmp_func vsse[6];

  249.     me_cmp_func nsse[6];

  250.     me_cmp_func w53[6];

  251.     me_cmp_func w97[6];

  252.     me_cmp_func dct_max[6];

  253.     me_cmp_func dct264_sad[6];

  254. 

  255.     me_cmp_func me_pre_cmp[6];

  256.     me_cmp_func me_cmp[6];

  257.     me_cmp_func me_sub_cmp[6];

  258.     me_cmp_func mb_cmp[6];

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

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

  261. 

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

  263.                              int size);

  264. 

  265.     /**

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

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

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

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

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

  271.      * @param pixels source

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

  273.      * @param h height

  274.      */

  275.     op_pixels_func put_pixels_tab[4][4];

  276. 

  277.     /**

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

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

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

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

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

  283.      * @param pixels source

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

  285.      * @param h height

  286.      */

  287.     op_pixels_func avg_pixels_tab[4][4];

  288. 

  289.     /**

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

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

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

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

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

  295.      * @param pixels source

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

  297.      * @param h height

  298.      */

  299.     op_pixels_func put_no_rnd_pixels_tab[4][4];

  300. 

  301.     /**

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

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

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

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

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

  307.      * @param pixels source

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

  309.      * @param h height

  310.      */

  311.     op_pixels_func avg_no_rnd_pixels_tab[4][4];

  312. 

  313.     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);

  314. 

  315.     /**

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

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

  318.      * positions<br>

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

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

  321.      * @param pixels source

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

  323.      * @param h height

  324.      */

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

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

  327. 

  328.     qpel_mc_func put_qpel_pixels_tab[2][16];

  329.     qpel_mc_func avg_qpel_pixels_tab[2][16];

  330.     qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];

  331.     qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];

  332.     qpel_mc_func put_mspel_pixels_tab[8];

  333. 

  334.     /**

  335.      * h264 Chroma MC

  336.      */

  337.     h264_chroma_mc_func put_h264_chroma_pixels_tab[3];

  338.     h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];

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

  340.     h264_chroma_mc_func put_no_rnd_vc1_chroma_pixels_tab[3];

  341.     h264_chroma_mc_func avg_no_rnd_vc1_chroma_pixels_tab[3];

  342. 

  343.     qpel_mc_func put_h264_qpel_pixels_tab[4][16];

  344.     qpel_mc_func avg_h264_qpel_pixels_tab[4][16];

  345. 

  346.     qpel_mc_func put_2tap_qpel_pixels_tab[4][16];

  347.     qpel_mc_func avg_2tap_qpel_pixels_tab[4][16];

  348. 

  349.     h264_weight_func weight_h264_pixels_tab[10];

  350.     h264_biweight_func biweight_h264_pixels_tab[10];

  351. 

  352.     /* AVS specific */

  353.     qpel_mc_func put_cavs_qpel_pixels_tab[2][16];

  354.     qpel_mc_func avg_cavs_qpel_pixels_tab[2][16];

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

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

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

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

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

  360. 

  361.     me_cmp_func pix_abs[2][4];

  362. 

  363.     /* huffyuv specific */

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

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

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

  367.     /**

  368.      * subtract huffyuv's variant of median prediction

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

  370.      */

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

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

  373.     int  (*add_hfyu_left_prediction)(uint8_t *dst, const uint8_t *src, int w, int left);

  374.     void (*add_hfyu_left_prediction_bgr32)(uint8_t *dst, const uint8_t *src, int w, int *red, int *green, int *blue, int *alpha);

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

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

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

  378. 

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

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

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

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

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

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

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

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

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

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

  389.     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],

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

  391. 

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

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

  394. 

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

  396. 

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

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

  399. 

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

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

  402. 

  403.     void (*vp6_filter_diag4)(uint8_t *dst, uint8_t *src, int stride,

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

  405. 

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

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

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

  409.     /* no alignment needed */

  410.     void (*lpc_compute_autocorr)(const int32_t *data, int len, int lag, double *autoc);

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

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

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

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

  415.     void (*vector_fmul_add)(float *dst, const float *src0, const float *src1, const float *src2, int len);

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

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

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

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

  420.     void (*vector_clipf)(float *dst /* align 16 */, const float *src /* align 16 */, float min, float max, int len /* align 16 */);

  421.     /**

  422.      * Multiply a vector of floats by a scalar float.  Source and

  423.      * destination vectors must overlap exactly or not at all.

  424.      * @param dst result vector, 16-byte aligned

  425.      * @param src input vector, 16-byte aligned

  426.      * @param mul scalar value

  427.      * @param len length of vector, multiple of 4

  428.      */

  429.     void (*vector_fmul_scalar)(float *dst, const float *src, float mul,

  430.                                int len);

  431.     /**

  432.      * Multiply a vector of floats by concatenated short vectors of

  433.      * floats and by a scalar float.  Source and destination vectors

  434.      * must overlap exactly or not at all.

  435.      * [0]: short vectors of length 2, 8-byte aligned

  436.      * [1]: short vectors of length 4, 16-byte aligned

  437.      * @param dst output vector, 16-byte aligned

  438.      * @param src input vector, 16-byte aligned

  439.      * @param sv  array of pointers to short vectors

  440.      * @param mul scalar value

  441.      * @param len number of elements in src and dst, multiple of 4

  442.      */

  443.     void (*vector_fmul_sv_scalar[2])(float *dst, const float *src,

  444.                                      const float **sv, float mul, int len);

  445.     /**

  446.      * Multiply short vectors of floats by a scalar float, store

  447.      * concatenated result.

  448.      * [0]: short vectors of length 2, 8-byte aligned

  449.      * [1]: short vectors of length 4, 16-byte aligned

  450.      * @param dst output vector, 16-byte aligned

  451.      * @param sv  array of pointers to short vectors

  452.      * @param mul scalar value

  453.      * @param len number of output elements, multiple of 4

  454.      */

  455.     void (*sv_fmul_scalar[2])(float *dst, const float **sv,

  456.                               float mul, int len);

  457.     /**

  458.      * Calculate the scalar product of two vectors of floats.

  459.      * @param v1  first vector, 16-byte aligned

  460.      * @param v2  second vector, 16-byte aligned

  461.      * @param len length of vectors, multiple of 4

  462.      */

  463.     float (*scalarproduct_float)(const float *v1, const float *v2, int len);

  464.     /**

  465.      * Calculate the sum and difference of two vectors of floats.

  466.      * @param v1  first input vector, sum output, 16-byte aligned

  467.      * @param v2  second input vector, difference output, 16-byte aligned

  468.      * @param len length of vectors, multiple of 4

  469.      */

  470.     void (*butterflies_float)(float *restrict v1, float *restrict v2, int len);

  471. 

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

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

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

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

  476. 

  477.     /* (I)DCT */

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

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

  480. 

  481.     /* IDCT really*/

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

  483. 

  484.     /**

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

  486.      * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)

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

  488.      */

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

  490. 

  491.     /**

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

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

  494.      */

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

  496. 

  497.     /**

  498.      * idct input permutation.

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

  500.      * IDCT)

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

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

  503.      * an example to avoid confusion:

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

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

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

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

  508.      */

  509.     uint8_t idct_permutation[64];

  510.     int idct_permutation_type;

  511. #define FF_NO_IDCT_PERM 1

  512. #define FF_LIBMPEG2_IDCT_PERM 2

  513. #define FF_SIMPLE_IDCT_PERM 3

  514. #define FF_TRANSPOSE_IDCT_PERM 4

  515. #define FF_PARTTRANS_IDCT_PERM 5

  516. #define FF_SSE2_IDCT_PERM 6

  517. 

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

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

  520. #define BASIS_SHIFT 16

  521. #define RECON_SHIFT 6

  522. 

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

  524. #define EDGE_WIDTH 16

  525. 

  526.     /* h264 functions */

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

  528.        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

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

  530.     */

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

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

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

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

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

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

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

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

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

  540. 

  541.     /* snow wavelet */

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

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

  544.     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);

  545. 

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

  547. 

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

  549. 

  550.     /* mlp/truehd functions */

  551.     void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff,

  552.                                int firorder, int iirorder,

  553.                                unsigned int filter_shift, int32_t mask, int blocksize,

  554.                                int32_t *sample_buffer);

  555. 

  556.     /* vc1 functions */

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

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

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

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

  561.     void (*vc1_inv_trans_8x8_dc)(uint8_t *dest, int line_size, DCTELEM *block);

  562.     void (*vc1_inv_trans_8x4_dc)(uint8_t *dest, int line_size, DCTELEM *block);

  563.     void (*vc1_inv_trans_4x8_dc)(uint8_t *dest, int line_size, DCTELEM *block);

  564.     void (*vc1_inv_trans_4x4_dc)(uint8_t *dest, int line_size, DCTELEM *block);

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

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

  567.     void (*vc1_v_loop_filter4)(uint8_t *src, int stride, int pq);

  568.     void (*vc1_h_loop_filter4)(uint8_t *src, int stride, int pq);

  569.     void (*vc1_v_loop_filter8)(uint8_t *src, int stride, int pq);

  570.     void (*vc1_h_loop_filter8)(uint8_t *src, int stride, int pq);

  571.     void (*vc1_v_loop_filter16)(uint8_t *src, int stride, int pq);

  572.     void (*vc1_h_loop_filter16)(uint8_t *src, int stride, int pq);

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

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

  575.      */

  576.     op_pixels_func put_vc1_mspel_pixels_tab[16];

  577.     op_pixels_func avg_vc1_mspel_pixels_tab[16];

  578. 

  579.     /* intrax8 functions */

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

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

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

  583. 

  584.     /**

  585.      * Calculate scalar product of two vectors.

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

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

  588.      */

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

  590.     /* ape functions */

  591.     /**

  592.      * Calculate scalar product of v1 and v2,

  593.      * and v1[i] += v3[i] * mul

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

  595.      */

  596.     int32_t (*scalarproduct_and_madd_int16)(int16_t *v1/*align 16*/, int16_t *v2, int16_t *v3, int len, int mul);

  597. 

  598.     /* rv30 functions */

  599.     qpel_mc_func put_rv30_tpel_pixels_tab[4][16];

  600.     qpel_mc_func avg_rv30_tpel_pixels_tab[4][16];

  601. 

  602.     /* rv40 functions */

  603.     qpel_mc_func put_rv40_qpel_pixels_tab[4][16];

  604.     qpel_mc_func avg_rv40_qpel_pixels_tab[4][16];

  605.     h264_chroma_mc_func put_rv40_chroma_pixels_tab[3];

  606.     h264_chroma_mc_func avg_rv40_chroma_pixels_tab[3];

  607. 

  608.     /* bink functions */

  609.     op_fill_func fill_block_tab[2];

  610.     void (*scale_block)(const uint8_t src[64]/*align 8*/, uint8_t *dst/*align 8*/, int linesize);

  611. } DSPContext;

  612. 

  613. void dsputil_static_init(void);

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

  615. 

  616. int ff_check_alignment(void);

  617. 

  618. /**

  619.  * permute block according to permuatation.

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

  621.  */

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

  623. 

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

  625. 

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

  627. 

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

  629. {

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

  631. }

  632. 

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

  634. {

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

  636. }

  637. 

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

  639.     switch(type&0xFF){

  640.     default:

  641.     case FF_CMP_SAD:

  642.         return lambda>>FF_LAMBDA_SHIFT;

  643.     case FF_CMP_DCT:

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

  645.     case FF_CMP_W53:

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

  647.     case FF_CMP_W97:

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

  649.     case FF_CMP_SATD:

  650.     case FF_CMP_DCT264:

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

  652.     case FF_CMP_RD:

  653.     case FF_CMP_PSNR:

  654.     case FF_CMP_SSE:

  655.     case FF_CMP_NSSE:

  656.         return lambda2>>FF_LAMBDA_SHIFT;

  657.     case FF_CMP_BIT:

  658.         return 1;

  659.     }

  660. }

  661. 

  662. /**

  663.  * Empty mmx state.

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

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

  666.  */

  667. #define emms_c()

  668. 

  669. /* should be defined by architectures supporting

  670.    one or more MultiMedia extension */

  671. int mm_support(void);

  672. extern int mm_flags;

  673. 

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

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

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

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

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

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

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

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

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

  683. 

  684. void ff_cavsdsp_init(DSPContext* c, AVCodecContext *avctx);

  685. void ff_rv30dsp_init(DSPContext* c, AVCodecContext *avctx);

  686. void ff_rv40dsp_init(DSPContext* c, AVCodecContext *avctx);

  687. void ff_vc1dsp_init(DSPContext* c, AVCodecContext *avctx);

  688. void ff_intrax8dsp_init(DSPContext* c, AVCodecContext *avctx);

  689. void ff_mlp_init(DSPContext* c, AVCodecContext *avctx);

  690. void ff_mlp_init_x86(DSPContext* c, AVCodecContext *avctx);

  691. 

  692. #if HAVE_MMX

  693. 

  694. #undef emms_c

  695. 

  696. static inline void emms(void)

  697. {

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

  699. }

  700. 

  701. 

  702. #define emms_c() \

  703. {\

  704.     if (mm_flags & FF_MM_MMX)\

  705.         emms();\

  706. }

  707. 

  708. #elif ARCH_ARM

  709. 

  710. #if HAVE_NEON

  711. #   define STRIDE_ALIGN 16

  712. #endif

  713. 

  714. #elif ARCH_PPC

  715. 

  716. #define STRIDE_ALIGN 16

  717. 

  718. #elif HAVE_MMI

  719. 

  720. #define STRIDE_ALIGN 16

  721. 

  722. #else

  723. 

  724. #define mm_flags 0

  725. #define mm_support() 0

  726. 

  727. #endif

  728. 

  729. #ifndef STRIDE_ALIGN

  730. #   define STRIDE_ALIGN 8

  731. #endif

  732. 

  733. #define LOCAL_ALIGNED(a, t, v, s, ...)                          \

  734.     uint8_t la_##v[sizeof(t s __VA_ARGS__) + (a)];              \

  735.     t (*v) __VA_ARGS__ = (void *)FFALIGN((uintptr_t)la_##v, a)

  736. 

  737. #if HAVE_LOCAL_ALIGNED_8

  738. #   define LOCAL_ALIGNED_8(t, v, s, ...) DECLARE_ALIGNED(8, t, v) s __VA_ARGS__

  739. #else

  740. #   define LOCAL_ALIGNED_8(t, v, s, ...) LOCAL_ALIGNED(8, t, v, s, __VA_ARGS__)

  741. #endif

  742. 

  743. #if HAVE_LOCAL_ALIGNED_16

  744. #   define LOCAL_ALIGNED_16(t, v, s, ...) DECLARE_ALIGNED(16, t, v) s __VA_ARGS__

  745. #else

  746. #   define LOCAL_ALIGNED_16(t, v, s, ...) LOCAL_ALIGNED(16, t, v, s, __VA_ARGS__)

  747. #endif

  748. 

  749. /* PSNR */

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

  751.               int orig_linesize[3], int coded_linesize,

  752.               AVCodecContext *avctx);

  753. 

  754. #define WRAPPER8_16(name8, name16)\

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

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

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

  758. }

  759. 

  760. #define WRAPPER8_16_SQ(name8, name16)\

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

  762.     int score=0;\

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

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

  765.     if(h==16){\

  766.         dst += 8*stride;\

  767.         src += 8*stride;\

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

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

  770.     }\

  771.     return score;\

  772. }

  773. 

  774. 

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

  776. {

  777.     int i;

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

  779.     {

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

  781.         dst+=dstStride;

  782.         src+=srcStride;

  783.     }

  784. }

  785. 

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

  787. {

  788.     int i;

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

  790.     {

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

  792.         dst+=dstStride;

  793.         src+=srcStride;

  794.     }

  795. }

  796. 

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

  798. {

  799.     int i;

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

  801.     {

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

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

  804.         dst+=dstStride;

  805.         src+=srcStride;

  806.     }

  807. }

  808. 

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

  810. {

  811.     int i;

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

  813.     {

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

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

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

  817.         dst+=dstStride;

  818.         src+=srcStride;

  819.     }

  820. }

  821. 

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

  823. {

  824.     int i;

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

  826.     {

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

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

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

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

  831.         dst+=dstStride;

  832.         src+=srcStride;

  833.     }

  834. }

  835. 

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

  837. {

  838.     int i;

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

  840.     {

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

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

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

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

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

  846.         dst+=dstStride;

  847.         src+=srcStride;

  848.     }

  849. }

  850. 

  851. #endif /* AVCODEC_DSPUTIL_H */