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FFmpeg/libavcodec/i386/mpegvideo_mmx.c

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  1. /*

  2.  * The simplest mpeg encoder (well, it was the simplest!)

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

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; if not, write to the Free Software

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

  20.  *

  21.  * Optimized for ia32 cpus by Nick Kurshev <nickols_k@mail.ru>

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

  23.  */

  24. 

  25. #include "../dsputil.h"

  26. #include "../mpegvideo.h"

  27. #include "../avcodec.h"

  28. #include "x86_cpu.h"

  29. 

  30. extern uint16_t inv_zigzag_direct16[64];

  31. 

  32. static const unsigned long long int mm_wabs __attribute__ ((aligned(8))) = 0xffffffffffffffffULL;

  33. static const unsigned long long int mm_wone __attribute__ ((aligned(8))) = 0x0001000100010001ULL;

  34. 

  35. 

  36. static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,

  37.                                   DCTELEM *block, int n, int qscale)

  38. {

  39.     long level, qmul, qadd, nCoeffs;

  40. 

  41.     qmul = qscale << 1;

  42. 

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

  44. 

  45.     if (!s->h263_aic) {

  46.         if (n < 4)

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

  48.         else

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

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

  51.     }else{

  52.         qadd = 0;

  53.         level= block[0];

  54.     }

  55.     if(s->ac_pred)

  56.         nCoeffs=63;

  57.     else

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

  59. //printf("%d %d  ", qmul, qadd);

  60. asm volatile(

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

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

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

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

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

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

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

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

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

  70.                 ASMALIGN(4)

  71.                 "1:                             \n\t"

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

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

  74. 

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

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

  77. 

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

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

  80. 

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

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

  83. 

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

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

  86. 

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

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

  89. 

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

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

  92. 

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

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

  95. 

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

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

  98. 

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

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

  101. 

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

  103.                 "jng 1b                         \n\t"

  104.                 ::"r" (block+nCoeffs), "g"(qmul), "g" (qadd), "r" (2*(-nCoeffs))

  105.                 : "memory"

  106.         );

  107.         block[0]= level;

  108. }

  109. 

  110. 

  111. static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,

  112.                                   DCTELEM *block, int n, int qscale)

  113. {

  114.     long qmul, qadd, nCoeffs;

  115. 

  116.     qmul = qscale << 1;

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

  118. 

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

  120. 

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

  122. //printf("%d %d  ", qmul, qadd);

  123. asm volatile(

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

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

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

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

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

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

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

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

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

  133.                 ASMALIGN(4)

  134.                 "1:                             \n\t"

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

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

  137. 

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

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

  140. 

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

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

  143. 

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

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

  146. 

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

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

  149. 

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

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

  152. 

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

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

  155. 

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

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

  158. 

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

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

  161. 

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

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

  164. 

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

  166.                 "jng 1b                         \n\t"

  167.                 ::"r" (block+nCoeffs), "g"(qmul), "g" (qadd), "r" (2*(-nCoeffs))

  168.                 : "memory"

  169.         );

  170. }

  171. 

  172. 

  173. /*

  174.   NK:

  175.   Note: looking at PARANOID:

  176.   "enable all paranoid tests for rounding, overflows, etc..."

  177. 

  178. #ifdef PARANOID

  179.                 if (level < -2048 || level > 2047)

  180.                     fprintf(stderr, "unquant error %d %d\n", i, level);

  181. #endif

  182.   We can suppose that result of two multiplications can't be greate of 0xFFFF

  183.   i.e. is 16-bit, so we use here only PMULLW instruction and can avoid

  184.   a complex multiplication.

  185. =====================================================

  186.  Full formula for multiplication of 2 integer numbers

  187.  which are represent as high:low words:

  188.  input: value1 = high1:low1

  189.         value2 = high2:low2

  190.  output: value3 = value1*value2

  191.  value3=high3:low3 (on overflow: modulus 2^32 wrap-around)

  192.  this mean that for 0x123456 * 0x123456 correct result is 0x766cb0ce4

  193.  but this algorithm will compute only 0x66cb0ce4

  194.  this limited by 16-bit size of operands

  195.  ---------------------------------

  196.  tlow1 = high1*low2

  197.  tlow2 = high2*low1

  198.  tlow1 = tlow1 + tlow2

  199.  high3:low3 = low1*low2

  200.  high3 += tlow1

  201. */

  202. static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,

  203.                                      DCTELEM *block, int n, int qscale)

  204. {

  205.     long nCoeffs;

  206.     const uint16_t *quant_matrix;

  207.     int block0;

  208. 

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

  210. 

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

  212. 

  213.     if (n < 4)

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

  215.     else

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

  217.     /* XXX: only mpeg1 */

  218.     quant_matrix = s->intra_matrix;

  219. asm volatile(

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

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

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

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

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

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

  226.                 ASMALIGN(4)

  227.                 "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  262. 

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

  264.                 "js 1b                          \n\t"

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

  266.                 : "%"REG_a, "memory"

  267.         );

  268.     block[0]= block0;

  269. }

  270. 

  271. static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,

  272.                                      DCTELEM *block, int n, int qscale)

  273. {

  274.     long nCoeffs;

  275.     const uint16_t *quant_matrix;

  276. 

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

  278. 

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

  280. 

  281.         quant_matrix = s->inter_matrix;

  282. asm volatile(

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

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

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

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

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

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

  289.                 ASMALIGN(4)

  290.                 "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  329. 

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

  331.                 "js 1b                          \n\t"

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

  333.                 : "%"REG_a, "memory"

  334.         );

  335. }

  336. 

  337. static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,

  338.                                      DCTELEM *block, int n, int qscale)

  339. {

  340.     long nCoeffs;

  341.     const uint16_t *quant_matrix;

  342.     int block0;

  343. 

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

  345. 

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

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

  348. 

  349.     if (n < 4)

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

  351.     else

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

  353.     quant_matrix = s->intra_matrix;

  354. asm volatile(

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

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

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

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

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

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

  361.                 ASMALIGN(4)

  362.                 "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  393. 

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

  395.                 "jng 1b                         \n\t"

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

  397.                 : "%"REG_a, "memory"

  398.         );

  399.     block[0]= block0;

  400.         //Note, we dont do mismatch control for intra as errors cannot accumulate

  401. }

  402. 

  403. static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,

  404.                                      DCTELEM *block, int n, int qscale)

  405. {

  406.     long nCoeffs;

  407.     const uint16_t *quant_matrix;

  408. 

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

  410. 

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

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

  413. 

  414.         quant_matrix = s->inter_matrix;

  415. asm volatile(

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

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

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

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

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

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

  422.                 ASMALIGN(4)

  423.                 "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  460. 

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

  462.                 "jng 1b                         \n\t"

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

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

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

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

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

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

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

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

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

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

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

  474. 

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

  476.                 : "%"REG_a, "memory"

  477.         );

  478. }

  479. 

  480. /* draw the edges of width 'w' of an image of size width, height

  481.    this mmx version can only handle w==8 || w==16 */

  482. static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height, int w)

  483. {

  484.     uint8_t *ptr, *last_line;

  485.     int i;

  486. 

  487.     last_line = buf + (height - 1) * wrap;

  488.     /* left and right */

  489.     ptr = buf;

  490.     if(w==8)

  491.     {

  492.         asm volatile(

  493.                 "1:                             \n\t"

  494.                 "movd (%0), %%mm0               \n\t"

  495.                 "punpcklbw %%mm0, %%mm0         \n\t"

  496.                 "punpcklwd %%mm0, %%mm0         \n\t"

  497.                 "punpckldq %%mm0, %%mm0         \n\t"

  498.                 "movq %%mm0, -8(%0)             \n\t"

  499.                 "movq -8(%0, %2), %%mm1         \n\t"

  500.                 "punpckhbw %%mm1, %%mm1         \n\t"

  501.                 "punpckhwd %%mm1, %%mm1         \n\t"

  502.                 "punpckhdq %%mm1, %%mm1         \n\t"

  503.                 "movq %%mm1, (%0, %2)           \n\t"

  504.                 "add %1, %0                     \n\t"

  505.                 "cmp %3, %0                     \n\t"

  506.                 " jb 1b                         \n\t"

  507.                 : "+r" (ptr)

  508.                 : "r" ((long)wrap), "r" ((long)width), "r" (ptr + wrap*height)

  509.         );

  510.     }

  511.     else

  512.     {

  513.         asm volatile(

  514.                 "1:                             \n\t"

  515.                 "movd (%0), %%mm0               \n\t"

  516.                 "punpcklbw %%mm0, %%mm0         \n\t"

  517.                 "punpcklwd %%mm0, %%mm0         \n\t"

  518.                 "punpckldq %%mm0, %%mm0         \n\t"

  519.                 "movq %%mm0, -8(%0)             \n\t"

  520.                 "movq %%mm0, -16(%0)            \n\t"

  521.                 "movq -8(%0, %2), %%mm1         \n\t"

  522.                 "punpckhbw %%mm1, %%mm1         \n\t"

  523.                 "punpckhwd %%mm1, %%mm1         \n\t"

  524.                 "punpckhdq %%mm1, %%mm1         \n\t"

  525.                 "movq %%mm1, (%0, %2)           \n\t"

  526.                 "movq %%mm1, 8(%0, %2)          \n\t"

  527.                 "add %1, %0                     \n\t"

  528.                 "cmp %3, %0                     \n\t"

  529.                 " jb 1b                         \n\t"

  530.                 : "+r" (ptr)

  531.                 : "r" ((long)wrap), "r" ((long)width), "r" (ptr + wrap*height)

  532.         );

  533.     }

  534. 

  535.     for(i=0;i<w;i+=4) {

  536.         /* top and bottom (and hopefully also the corners) */

  537.         ptr= buf - (i + 1) * wrap - w;

  538.         asm volatile(

  539.                 "1:                             \n\t"

  540.                 "movq (%1, %0), %%mm0           \n\t"

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

  542.                 "movq %%mm0, (%0, %2)           \n\t"

  543.                 "movq %%mm0, (%0, %2, 2)        \n\t"

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

  545.                 "add $8, %0                     \n\t"

  546.                 "cmp %4, %0                     \n\t"

  547.                 " jb 1b                         \n\t"

  548.                 : "+r" (ptr)

  549.                 : "r" ((long)buf - (long)ptr - w), "r" ((long)-wrap), "r" ((long)-wrap*3), "r" (ptr+width+2*w)

  550.         );

  551.         ptr= last_line + (i + 1) * wrap - w;

  552.         asm volatile(

  553.                 "1:                             \n\t"

  554.                 "movq (%1, %0), %%mm0           \n\t"

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

  556.                 "movq %%mm0, (%0, %2)           \n\t"

  557.                 "movq %%mm0, (%0, %2, 2)        \n\t"

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

  559.                 "add $8, %0                     \n\t"

  560.                 "cmp %4, %0                     \n\t"

  561.                 " jb 1b                         \n\t"

  562.                 : "+r" (ptr)

  563.                 : "r" ((long)last_line - (long)ptr - w), "r" ((long)wrap), "r" ((long)wrap*3), "r" (ptr+width+2*w)

  564.         );

  565.     }

  566. }

  567. 

  568. static void  denoise_dct_mmx(MpegEncContext *s, DCTELEM *block){

  569.     const int intra= s->mb_intra;

  570.     int *sum= s->dct_error_sum[intra];

  571.     uint16_t *offset= s->dct_offset[intra];

  572. 

  573.     s->dct_count[intra]++;

  574. 

  575.     asm volatile(

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

  577.         "1:                                     \n\t"

  578.         "pxor %%mm0, %%mm0                      \n\t"

  579.         "pxor %%mm1, %%mm1                      \n\t"

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

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

  582.         "pcmpgtw %%mm2, %%mm0                   \n\t"

  583.         "pcmpgtw %%mm3, %%mm1                   \n\t"

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

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

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

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

  588.         "movq %%mm2, %%mm4                      \n\t"

  589.         "movq %%mm3, %%mm5                      \n\t"

  590.         "psubusw (%2), %%mm2                    \n\t"

  591.         "psubusw 8(%2), %%mm3                   \n\t"

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

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

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

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

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

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

  598.         "movq %%mm4, %%mm2                      \n\t"

  599.         "movq %%mm5, %%mm3                      \n\t"

  600.         "punpcklwd %%mm7, %%mm4                 \n\t"

  601.         "punpckhwd %%mm7, %%mm2                 \n\t"

  602.         "punpcklwd %%mm7, %%mm5                 \n\t"

  603.         "punpckhwd %%mm7, %%mm3                 \n\t"

  604.         "paddd (%1), %%mm4                      \n\t"

  605.         "paddd 8(%1), %%mm2                     \n\t"

  606.         "paddd 16(%1), %%mm5                    \n\t"

  607.         "paddd 24(%1), %%mm3                    \n\t"

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

  609.         "movq %%mm2, 8(%1)                      \n\t"

  610.         "movq %%mm5, 16(%1)                     \n\t"

  611.         "movq %%mm3, 24(%1)                     \n\t"

  612.         "add $16, %0                            \n\t"

  613.         "add $32, %1                            \n\t"

  614.         "add $16, %2                            \n\t"

  615.         "cmp %3, %0                             \n\t"

  616.             " jb 1b                             \n\t"

  617.         : "+r" (block), "+r" (sum), "+r" (offset)

  618.         : "r"(block+64)

  619.     );

  620. }

  621. 

  622. static void  denoise_dct_sse2(MpegEncContext *s, DCTELEM *block){

  623.     const int intra= s->mb_intra;

  624.     int *sum= s->dct_error_sum[intra];

  625.     uint16_t *offset= s->dct_offset[intra];

  626. 

  627.     s->dct_count[intra]++;

  628. 

  629.     asm volatile(

  630.         "pxor %%xmm7, %%xmm7                    \n\t"

  631.         "1:                                     \n\t"

  632.         "pxor %%xmm0, %%xmm0                    \n\t"

  633.         "pxor %%xmm1, %%xmm1                    \n\t"

  634.         "movdqa (%0), %%xmm2                    \n\t"

  635.         "movdqa 16(%0), %%xmm3                  \n\t"

  636.         "pcmpgtw %%xmm2, %%xmm0                 \n\t"

  637.         "pcmpgtw %%xmm3, %%xmm1                 \n\t"

  638.         "pxor %%xmm0, %%xmm2                    \n\t"

  639.         "pxor %%xmm1, %%xmm3                    \n\t"

  640.         "psubw %%xmm0, %%xmm2                   \n\t"

  641.         "psubw %%xmm1, %%xmm3                   \n\t"

  642.         "movdqa %%xmm2, %%xmm4                  \n\t"

  643.         "movdqa %%xmm3, %%xmm5                  \n\t"

  644.         "psubusw (%2), %%xmm2                   \n\t"

  645.         "psubusw 16(%2), %%xmm3                 \n\t"

  646.         "pxor %%xmm0, %%xmm2                    \n\t"

  647.         "pxor %%xmm1, %%xmm3                    \n\t"

  648.         "psubw %%xmm0, %%xmm2                   \n\t"

  649.         "psubw %%xmm1, %%xmm3                   \n\t"

  650.         "movdqa %%xmm2, (%0)                    \n\t"

  651.         "movdqa %%xmm3, 16(%0)                  \n\t"

  652.         "movdqa %%xmm4, %%xmm6                  \n\t"

  653.         "movdqa %%xmm5, %%xmm0                  \n\t"

  654.         "punpcklwd %%xmm7, %%xmm4               \n\t"

  655.         "punpckhwd %%xmm7, %%xmm6               \n\t"

  656.         "punpcklwd %%xmm7, %%xmm5               \n\t"

  657.         "punpckhwd %%xmm7, %%xmm0               \n\t"

  658.         "paddd (%1), %%xmm4                     \n\t"

  659.         "paddd 16(%1), %%xmm6                   \n\t"

  660.         "paddd 32(%1), %%xmm5                   \n\t"

  661.         "paddd 48(%1), %%xmm0                   \n\t"

  662.         "movdqa %%xmm4, (%1)                    \n\t"

  663.         "movdqa %%xmm6, 16(%1)                  \n\t"

  664.         "movdqa %%xmm5, 32(%1)                  \n\t"

  665.         "movdqa %%xmm0, 48(%1)                  \n\t"

  666.         "add $32, %0                            \n\t"

  667.         "add $64, %1                            \n\t"

  668.         "add $32, %2                            \n\t"

  669.         "cmp %3, %0                             \n\t"

  670.             " jb 1b                             \n\t"

  671.         : "+r" (block), "+r" (sum), "+r" (offset)

  672.         : "r"(block+64)

  673.     );

  674. }

  675. 

  676. #undef HAVE_MMX2

  677. #define RENAME(a) a ## _MMX

  678. #define RENAMEl(a) a ## _mmx

  679. #include "mpegvideo_mmx_template.c"

  680. 

  681. #define HAVE_MMX2

  682. #undef RENAME

  683. #undef RENAMEl

  684. #define RENAME(a) a ## _MMX2

  685. #define RENAMEl(a) a ## _mmx2

  686. #include "mpegvideo_mmx_template.c"

  687. 

  688. #undef RENAME

  689. #undef RENAMEl

  690. #define RENAME(a) a ## _SSE2

  691. #define RENAMEl(a) a ## _sse2

  692. #include "mpegvideo_mmx_template.c"

  693. 

  694. void MPV_common_init_mmx(MpegEncContext *s)

  695. {

  696.     if (mm_flags & MM_MMX) {

  697.         const int dct_algo = s->avctx->dct_algo;

  698. 

  699.         s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;

  700.         s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;

  701.         s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;

  702.         s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;

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

  704.             s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;

  705.         s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;

  706. 

  707.         draw_edges = draw_edges_mmx;

  708. 

  709.         if (mm_flags & MM_SSE2) {

  710.             s->denoise_dct= denoise_dct_sse2;

  711.         } else {

  712.                 s->denoise_dct= denoise_dct_mmx;

  713.         }

  714. 

  715.         if(dct_algo==FF_DCT_AUTO || dct_algo==FF_DCT_MMX){

  716.             if(mm_flags & MM_SSE2){

  717.                 s->dct_quantize= dct_quantize_SSE2;

  718.             } else if(mm_flags & MM_MMXEXT){

  719.                 s->dct_quantize= dct_quantize_MMX2;

  720.             } else {

  721.                 s->dct_quantize= dct_quantize_MMX;

  722.             }

  723.         }

  724.     }

  725. }