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FFmpeg/libavcodec/x86/mpegvideo.c

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  1. /*

  2.  * Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>

  3.  * h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav is free software; you can redistribute it and/or

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

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

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

  11.  *

  12.  * Libav is distributed in the hope that it will be useful,

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

  18.  * License along with Libav; if not, write to the Free Software

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

  20.  */

  21. 

  22. #include "libavutil/attributes.h"

  23. #include "libavutil/cpu.h"

  24. #include "libavutil/x86/asm.h"

  25. #include "libavutil/x86/cpu.h"

  26. #include "libavcodec/avcodec.h"

  27. #include "libavcodec/mpegvideo.h"

  28. #include "dsputil_x86.h"

  29. 

  30. #if HAVE_INLINE_ASM

  31. 

  32. static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,

  33.                                   int16_t *block, int n, int qscale)

  34. {

  35.     x86_reg level, qmul, qadd, nCoeffs;

  36. 

  37.     qmul = qscale << 1;

  38. 

  39.     assert(s->block_last_index[n]>=0 || s->h263_aic);

  40. 

  41.     if (!s->h263_aic) {

  42.         if (n < 4)

  43.             level = block[0] * s->y_dc_scale;

  44.         else

  45.             level = block[0] * s->c_dc_scale;

  46.         qadd = (qscale - 1) | 1;

  47.     }else{

  48.         qadd = 0;

  49.         level= block[0];

  50.     }

  51.     if(s->ac_pred)

  52.         nCoeffs=63;

  53.     else

  54.         nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];

  55. 

  56. __asm__ volatile(

  57.                 "movd %1, %%mm6                 \n\t" //qmul

  58.                 "packssdw %%mm6, %%mm6          \n\t"

  59.                 "packssdw %%mm6, %%mm6          \n\t"

  60.                 "movd %2, %%mm5                 \n\t" //qadd

  61.                 "pxor %%mm7, %%mm7              \n\t"

  62.                 "packssdw %%mm5, %%mm5          \n\t"

  63.                 "packssdw %%mm5, %%mm5          \n\t"

  64.                 "psubw %%mm5, %%mm7             \n\t"

  65.                 "pxor %%mm4, %%mm4              \n\t"

  66.                 ".p2align 4                     \n\t"

  67.                 "1:                             \n\t"

  68.                 "movq (%0, %3), %%mm0           \n\t"

  69.                 "movq 8(%0, %3), %%mm1          \n\t"

  70. 

  71.                 "pmullw %%mm6, %%mm0            \n\t"

  72.                 "pmullw %%mm6, %%mm1            \n\t"

  73. 

  74.                 "movq (%0, %3), %%mm2           \n\t"

  75.                 "movq 8(%0, %3), %%mm3          \n\t"

  76. 

  77.                 "pcmpgtw %%mm4, %%mm2           \n\t" // block[i] < 0 ? -1 : 0

  78.                 "pcmpgtw %%mm4, %%mm3           \n\t" // block[i] < 0 ? -1 : 0

  79. 

  80.                 "pxor %%mm2, %%mm0              \n\t"

  81.                 "pxor %%mm3, %%mm1              \n\t"

  82. 

  83.                 "paddw %%mm7, %%mm0             \n\t"

  84.                 "paddw %%mm7, %%mm1             \n\t"

  85. 

  86.                 "pxor %%mm0, %%mm2              \n\t"

  87.                 "pxor %%mm1, %%mm3              \n\t"

  88. 

  89.                 "pcmpeqw %%mm7, %%mm0           \n\t" // block[i] == 0 ? -1 : 0

  90.                 "pcmpeqw %%mm7, %%mm1           \n\t" // block[i] == 0 ? -1 : 0

  91. 

  92.                 "pandn %%mm2, %%mm0             \n\t"

  93.                 "pandn %%mm3, %%mm1             \n\t"

  94. 

  95.                 "movq %%mm0, (%0, %3)           \n\t"

  96.                 "movq %%mm1, 8(%0, %3)          \n\t"

  97. 

  98.                 "add $16, %3                    \n\t"

  99.                 "jng 1b                         \n\t"

  100.                 ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))

  101.                 : "memory"

  102.         );

  103.         block[0]= level;

  104. }

  105. 

  106. 

  107. static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,

  108.                                   int16_t *block, int n, int qscale)

  109. {

  110.     x86_reg qmul, qadd, nCoeffs;

  111. 

  112.     qmul = qscale << 1;

  113.     qadd = (qscale - 1) | 1;

  114. 

  115.     assert(s->block_last_index[n]>=0 || s->h263_aic);

  116. 

  117.     nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];

  118. 

  119. __asm__ volatile(

  120.                 "movd %1, %%mm6                 \n\t" //qmul

  121.                 "packssdw %%mm6, %%mm6          \n\t"

  122.                 "packssdw %%mm6, %%mm6          \n\t"

  123.                 "movd %2, %%mm5                 \n\t" //qadd

  124.                 "pxor %%mm7, %%mm7              \n\t"

  125.                 "packssdw %%mm5, %%mm5          \n\t"

  126.                 "packssdw %%mm5, %%mm5          \n\t"

  127.                 "psubw %%mm5, %%mm7             \n\t"

  128.                 "pxor %%mm4, %%mm4              \n\t"

  129.                 ".p2align 4                     \n\t"

  130.                 "1:                             \n\t"

  131.                 "movq (%0, %3), %%mm0           \n\t"

  132.                 "movq 8(%0, %3), %%mm1          \n\t"

  133. 

  134.                 "pmullw %%mm6, %%mm0            \n\t"

  135.                 "pmullw %%mm6, %%mm1            \n\t"

  136. 

  137.                 "movq (%0, %3), %%mm2           \n\t"

  138.                 "movq 8(%0, %3), %%mm3          \n\t"

  139. 

  140.                 "pcmpgtw %%mm4, %%mm2           \n\t" // block[i] < 0 ? -1 : 0

  141.                 "pcmpgtw %%mm4, %%mm3           \n\t" // block[i] < 0 ? -1 : 0

  142. 

  143.                 "pxor %%mm2, %%mm0              \n\t"

  144.                 "pxor %%mm3, %%mm1              \n\t"

  145. 

  146.                 "paddw %%mm7, %%mm0             \n\t"

  147.                 "paddw %%mm7, %%mm1             \n\t"

  148. 

  149.                 "pxor %%mm0, %%mm2              \n\t"

  150.                 "pxor %%mm1, %%mm3              \n\t"

  151. 

  152.                 "pcmpeqw %%mm7, %%mm0           \n\t" // block[i] == 0 ? -1 : 0

  153.                 "pcmpeqw %%mm7, %%mm1           \n\t" // block[i] == 0 ? -1 : 0

  154. 

  155.                 "pandn %%mm2, %%mm0             \n\t"

  156.                 "pandn %%mm3, %%mm1             \n\t"

  157. 

  158.                 "movq %%mm0, (%0, %3)           \n\t"

  159.                 "movq %%mm1, 8(%0, %3)          \n\t"

  160. 

  161.                 "add $16, %3                    \n\t"

  162.                 "jng 1b                         \n\t"

  163.                 ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))

  164.                 : "memory"

  165.         );

  166. }

  167. 

  168. static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,

  169.                                      int16_t *block, int n, int qscale)

  170. {

  171.     x86_reg nCoeffs;

  172.     const uint16_t *quant_matrix;

  173.     int block0;

  174. 

  175.     assert(s->block_last_index[n]>=0);

  176. 

  177.     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;

  178. 

  179.     if (n < 4)

  180.         block0 = block[0] * s->y_dc_scale;

  181.     else

  182.         block0 = block[0] * s->c_dc_scale;

  183.     /* XXX: only mpeg1 */

  184.     quant_matrix = s->intra_matrix;

  185. __asm__ volatile(

  186.                 "pcmpeqw %%mm7, %%mm7           \n\t"

  187.                 "psrlw $15, %%mm7               \n\t"

  188.                 "movd %2, %%mm6                 \n\t"

  189.                 "packssdw %%mm6, %%mm6          \n\t"

  190.                 "packssdw %%mm6, %%mm6          \n\t"

  191.                 "mov %3, %%"REG_a"              \n\t"

  192.                 ".p2align 4                     \n\t"

  193.                 "1:                             \n\t"

  194.                 "movq (%0, %%"REG_a"), %%mm0    \n\t"

  195.                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"

  196.                 "movq (%1, %%"REG_a"), %%mm4    \n\t"

  197.                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"

  198.                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]

  199.                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]

  200.                 "pxor %%mm2, %%mm2              \n\t"

  201.                 "pxor %%mm3, %%mm3              \n\t"

  202.                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0

  203.                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0

  204.                 "pxor %%mm2, %%mm0              \n\t"

  205.                 "pxor %%mm3, %%mm1              \n\t"

  206.                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])

  207.                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])

  208.                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q

  209.                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q

  210.                 "pxor %%mm4, %%mm4              \n\t"

  211.                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow

  212.                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0

  213.                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0

  214.                 "psraw $3, %%mm0                \n\t"

  215.                 "psraw $3, %%mm1                \n\t"

  216.                 "psubw %%mm7, %%mm0             \n\t"

  217.                 "psubw %%mm7, %%mm1             \n\t"

  218.                 "por %%mm7, %%mm0               \n\t"

  219.                 "por %%mm7, %%mm1               \n\t"

  220.                 "pxor %%mm2, %%mm0              \n\t"

  221.                 "pxor %%mm3, %%mm1              \n\t"

  222.                 "psubw %%mm2, %%mm0             \n\t"

  223.                 "psubw %%mm3, %%mm1             \n\t"

  224.                 "pandn %%mm0, %%mm4             \n\t"

  225.                 "pandn %%mm1, %%mm5             \n\t"

  226.                 "movq %%mm4, (%0, %%"REG_a")    \n\t"

  227.                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"

  228. 

  229.                 "add $16, %%"REG_a"             \n\t"

  230.                 "js 1b                          \n\t"

  231.                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)

  232.                 : "%"REG_a, "memory"

  233.         );

  234.     block[0]= block0;

  235. }

  236. 

  237. static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,

  238.                                      int16_t *block, int n, int qscale)

  239. {

  240.     x86_reg nCoeffs;

  241.     const uint16_t *quant_matrix;

  242. 

  243.     assert(s->block_last_index[n]>=0);

  244. 

  245.     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;

  246. 

  247.         quant_matrix = s->inter_matrix;

  248. __asm__ volatile(

  249.                 "pcmpeqw %%mm7, %%mm7           \n\t"

  250.                 "psrlw $15, %%mm7               \n\t"

  251.                 "movd %2, %%mm6                 \n\t"

  252.                 "packssdw %%mm6, %%mm6          \n\t"

  253.                 "packssdw %%mm6, %%mm6          \n\t"

  254.                 "mov %3, %%"REG_a"              \n\t"

  255.                 ".p2align 4                     \n\t"

  256.                 "1:                             \n\t"

  257.                 "movq (%0, %%"REG_a"), %%mm0    \n\t"

  258.                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"

  259.                 "movq (%1, %%"REG_a"), %%mm4    \n\t"

  260.                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"

  261.                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]

  262.                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]

  263.                 "pxor %%mm2, %%mm2              \n\t"

  264.                 "pxor %%mm3, %%mm3              \n\t"

  265.                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0

  266.                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0

  267.                 "pxor %%mm2, %%mm0              \n\t"

  268.                 "pxor %%mm3, %%mm1              \n\t"

  269.                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])

  270.                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])

  271.                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2

  272.                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2

  273.                 "paddw %%mm7, %%mm0             \n\t" // abs(block[i])*2 + 1

  274.                 "paddw %%mm7, %%mm1             \n\t" // abs(block[i])*2 + 1

  275.                 "pmullw %%mm4, %%mm0            \n\t" // (abs(block[i])*2 + 1)*q

  276.                 "pmullw %%mm5, %%mm1            \n\t" // (abs(block[i])*2 + 1)*q

  277.                 "pxor %%mm4, %%mm4              \n\t"

  278.                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow

  279.                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0

  280.                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0

  281.                 "psraw $4, %%mm0                \n\t"

  282.                 "psraw $4, %%mm1                \n\t"

  283.                 "psubw %%mm7, %%mm0             \n\t"

  284.                 "psubw %%mm7, %%mm1             \n\t"

  285.                 "por %%mm7, %%mm0               \n\t"

  286.                 "por %%mm7, %%mm1               \n\t"

  287.                 "pxor %%mm2, %%mm0              \n\t"

  288.                 "pxor %%mm3, %%mm1              \n\t"

  289.                 "psubw %%mm2, %%mm0             \n\t"

  290.                 "psubw %%mm3, %%mm1             \n\t"

  291.                 "pandn %%mm0, %%mm4             \n\t"

  292.                 "pandn %%mm1, %%mm5             \n\t"

  293.                 "movq %%mm4, (%0, %%"REG_a")    \n\t"

  294.                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"

  295. 

  296.                 "add $16, %%"REG_a"             \n\t"

  297.                 "js 1b                          \n\t"

  298.                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)

  299.                 : "%"REG_a, "memory"

  300.         );

  301. }

  302. 

  303. static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,

  304.                                      int16_t *block, int n, int qscale)

  305. {

  306.     x86_reg nCoeffs;

  307.     const uint16_t *quant_matrix;

  308.     int block0;

  309. 

  310.     assert(s->block_last_index[n]>=0);

  311. 

  312.     if(s->alternate_scan) nCoeffs= 63; //FIXME

  313.     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];

  314. 

  315.     if (n < 4)

  316.         block0 = block[0] * s->y_dc_scale;

  317.     else

  318.         block0 = block[0] * s->c_dc_scale;

  319.     quant_matrix = s->intra_matrix;

  320. __asm__ volatile(

  321.                 "pcmpeqw %%mm7, %%mm7           \n\t"

  322.                 "psrlw $15, %%mm7               \n\t"

  323.                 "movd %2, %%mm6                 \n\t"

  324.                 "packssdw %%mm6, %%mm6          \n\t"

  325.                 "packssdw %%mm6, %%mm6          \n\t"

  326.                 "mov %3, %%"REG_a"              \n\t"

  327.                 ".p2align 4                     \n\t"

  328.                 "1:                             \n\t"

  329.                 "movq (%0, %%"REG_a"), %%mm0    \n\t"

  330.                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"

  331.                 "movq (%1, %%"REG_a"), %%mm4    \n\t"

  332.                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"

  333.                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]

  334.                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]

  335.                 "pxor %%mm2, %%mm2              \n\t"

  336.                 "pxor %%mm3, %%mm3              \n\t"

  337.                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0

  338.                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0

  339.                 "pxor %%mm2, %%mm0              \n\t"

  340.                 "pxor %%mm3, %%mm1              \n\t"

  341.                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])

  342.                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])

  343.                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q

  344.                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q

  345.                 "pxor %%mm4, %%mm4              \n\t"

  346.                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow

  347.                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0

  348.                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0

  349.                 "psraw $3, %%mm0                \n\t"

  350.                 "psraw $3, %%mm1                \n\t"

  351.                 "pxor %%mm2, %%mm0              \n\t"

  352.                 "pxor %%mm3, %%mm1              \n\t"

  353.                 "psubw %%mm2, %%mm0             \n\t"

  354.                 "psubw %%mm3, %%mm1             \n\t"

  355.                 "pandn %%mm0, %%mm4             \n\t"

  356.                 "pandn %%mm1, %%mm5             \n\t"

  357.                 "movq %%mm4, (%0, %%"REG_a")    \n\t"

  358.                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"

  359. 

  360.                 "add $16, %%"REG_a"             \n\t"

  361.                 "jng 1b                         \n\t"

  362.                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)

  363.                 : "%"REG_a, "memory"

  364.         );

  365.     block[0]= block0;

  366.         //Note, we do not do mismatch control for intra as errors cannot accumulate

  367. }

  368. 

  369. static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,

  370.                                      int16_t *block, int n, int qscale)

  371. {

  372.     x86_reg nCoeffs;

  373.     const uint16_t *quant_matrix;

  374. 

  375.     assert(s->block_last_index[n]>=0);

  376. 

  377.     if(s->alternate_scan) nCoeffs= 63; //FIXME

  378.     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];

  379. 

  380.         quant_matrix = s->inter_matrix;

  381. __asm__ volatile(

  382.                 "pcmpeqw %%mm7, %%mm7           \n\t"

  383.                 "psrlq $48, %%mm7               \n\t"

  384.                 "movd %2, %%mm6                 \n\t"

  385.                 "packssdw %%mm6, %%mm6          \n\t"

  386.                 "packssdw %%mm6, %%mm6          \n\t"

  387.                 "mov %3, %%"REG_a"              \n\t"

  388.                 ".p2align 4                     \n\t"

  389.                 "1:                             \n\t"

  390.                 "movq (%0, %%"REG_a"), %%mm0    \n\t"

  391.                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"

  392.                 "movq (%1, %%"REG_a"), %%mm4    \n\t"

  393.                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"

  394.                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]

  395.                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]

  396.                 "pxor %%mm2, %%mm2              \n\t"

  397.                 "pxor %%mm3, %%mm3              \n\t"

  398.                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0

  399.                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0

  400.                 "pxor %%mm2, %%mm0              \n\t"

  401.                 "pxor %%mm3, %%mm1              \n\t"

  402.                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])

  403.                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])

  404.                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2

  405.                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2

  406.                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*2*q

  407.                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*2*q

  408.                 "paddw %%mm4, %%mm0             \n\t" // (abs(block[i])*2 + 1)*q

  409.                 "paddw %%mm5, %%mm1             \n\t" // (abs(block[i])*2 + 1)*q

  410.                 "pxor %%mm4, %%mm4              \n\t"

  411.                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow

  412.                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0

  413.                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0

  414.                 "psrlw $4, %%mm0                \n\t"

  415.                 "psrlw $4, %%mm1                \n\t"

  416.                 "pxor %%mm2, %%mm0              \n\t"

  417.                 "pxor %%mm3, %%mm1              \n\t"

  418.                 "psubw %%mm2, %%mm0             \n\t"

  419.                 "psubw %%mm3, %%mm1             \n\t"

  420.                 "pandn %%mm0, %%mm4             \n\t"

  421.                 "pandn %%mm1, %%mm5             \n\t"

  422.                 "pxor %%mm4, %%mm7              \n\t"

  423.                 "pxor %%mm5, %%mm7              \n\t"

  424.                 "movq %%mm4, (%0, %%"REG_a")    \n\t"

  425.                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"

  426. 

  427.                 "add $16, %%"REG_a"             \n\t"

  428.                 "jng 1b                         \n\t"

  429.                 "movd 124(%0, %3), %%mm0        \n\t"

  430.                 "movq %%mm7, %%mm6              \n\t"

  431.                 "psrlq $32, %%mm7               \n\t"

  432.                 "pxor %%mm6, %%mm7              \n\t"

  433.                 "movq %%mm7, %%mm6              \n\t"

  434.                 "psrlq $16, %%mm7               \n\t"

  435.                 "pxor %%mm6, %%mm7              \n\t"

  436.                 "pslld $31, %%mm7               \n\t"

  437.                 "psrlq $15, %%mm7               \n\t"

  438.                 "pxor %%mm7, %%mm0              \n\t"

  439.                 "movd %%mm0, 124(%0, %3)        \n\t"

  440. 

  441.                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)

  442.                 : "%"REG_a, "memory"

  443.         );

  444. }

  445. 

  446. #endif /* HAVE_INLINE_ASM */

  447. 

  448. av_cold void ff_MPV_common_init_x86(MpegEncContext *s)

  449. {

  450. #if HAVE_INLINE_ASM

  451.     int cpu_flags = av_get_cpu_flags();

  452. 

  453.     if (INLINE_MMX(cpu_flags)) {

  454.         s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;

  455.         s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;

  456.         s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;

  457.         s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;

  458.         if(!(s->flags & CODEC_FLAG_BITEXACT))

  459.             s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;

  460.         s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;

  461.     }

  462. #endif /* HAVE_INLINE_ASM */

  463. }