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FFmpeg/libswscale/yuv2rgb.c

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  1. /*

  2.  * yuv2rgb.c, Software YUV to RGB converter

  3.  *

  4.  *  Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>

  5.  *

  6.  *  Functions broken out from display_x11.c and several new modes

  7.  *  added by Håkan Hjort <d95hjort@dtek.chalmers.se>

  8.  *

  9.  *  15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>

  10.  *

  11.  *  MMX/MMX2 template stuff (needed for fast movntq support),

  12.  *  1,4,8bpp support and context / deglobalize stuff

  13.  *  by Michael Niedermayer (michaelni@gmx.at)

  14.  *

  15.  *  This file is part of mpeg2dec, a free MPEG-2 video decoder

  16.  *

  17.  *  mpeg2dec is free software; you can redistribute it and/or modify

  18.  *  it under the terms of the GNU General Public License as published by

  19.  *  the Free Software Foundation; either version 2, or (at your option)

  20.  *  any later version.

  21.  *

  22.  *  mpeg2dec is distributed in the hope that it will be useful,

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

  24.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  25.  *  GNU General Public License for more details.

  26.  *

  27.  *  You should have received a copy of the GNU General Public License

  28.  *  along with mpeg2dec; if not, write to the Free Software

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

  30.  */

  31. 

  32. #include <stdio.h>

  33. #include <stdlib.h>

  34. #include <inttypes.h>

  35. #include <assert.h>

  36. 

  37. #include "config.h"

  38. #include "rgb2rgb.h"

  39. #include "swscale.h"

  40. #include "swscale_internal.h"

  41. 

  42. #define DITHER1XBPP // only for MMX

  43. 

  44. extern const uint8_t dither_8x8_32[8][8];

  45. extern const uint8_t dither_8x8_73[8][8];

  46. extern const uint8_t dither_8x8_220[8][8];

  47. 

  48. #ifdef HAVE_MMX

  49. 

  50. /* hope these constant values are cache line aligned */

  51. DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;

  52. DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;

  53. DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;

  54. 

  55. #undef HAVE_MMX

  56. 

  57. //MMX versions

  58. #undef RENAME

  59. #define HAVE_MMX

  60. #undef HAVE_MMX2

  61. #undef HAVE_3DNOW

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

  63. #include "yuv2rgb_template.c"

  64. 

  65. //MMX2 versions

  66. #undef RENAME

  67. #define HAVE_MMX

  68. #define HAVE_MMX2

  69. #undef HAVE_3DNOW

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

  71. #include "yuv2rgb_template.c"

  72. 

  73. #endif /* HAVE_MMX */

  74. 

  75. const int32_t Inverse_Table_6_9[8][4] = {

  76.     {117504, 138453, 13954, 34903}, /* no sequence_display_extension */

  77.     {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */

  78.     {104597, 132201, 25675, 53279}, /* unspecified */

  79.     {104597, 132201, 25675, 53279}, /* reserved */

  80.     {104448, 132798, 24759, 53109}, /* FCC */

  81.     {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */

  82.     {104597, 132201, 25675, 53279}, /* SMPTE 170M */

  83.     {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */

  84. };

  85. 

  86. #define RGB(i)                                      \

  87.     U = pu[i];                                      \

  88.     V = pv[i];                                      \

  89.     r = (void *)c->table_rV[V];                     \

  90.     g = (void *)(c->table_gU[U] + c->table_gV[V]);  \

  91.     b = (void *)c->table_bU[U];

  92. 

  93. #define DST1(i)                         \

  94.     Y = py_1[2*i];                      \

  95.     dst_1[2*i] = r[Y] + g[Y] + b[Y];    \

  96.     Y = py_1[2*i+1];                    \

  97.     dst_1[2*i+1] = r[Y] + g[Y] + b[Y];

  98. 

  99. #define DST2(i)                         \

  100.     Y = py_2[2*i];                      \

  101.     dst_2[2*i] = r[Y] + g[Y] + b[Y];    \

  102.     Y = py_2[2*i+1];                    \

  103.     dst_2[2*i+1] = r[Y] + g[Y] + b[Y];

  104. 

  105. #define DST1RGB(i)                                                \

  106.     Y = py_1[2*i];                                                \

  107.     dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y];  \

  108.     Y = py_1[2*i+1];                                              \

  109.     dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];

  110. 

  111. #define DST2RGB(i)                                                \

  112.     Y = py_2[2*i];                                                \

  113.     dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y];  \

  114.     Y = py_2[2*i+1];                                              \

  115.     dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];

  116. 

  117. #define DST1BGR(i)                                                \

  118.     Y = py_1[2*i];                                                \

  119.     dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y];  \

  120.     Y = py_1[2*i+1];                                              \

  121.     dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];

  122. 

  123. #define DST2BGR(i)                                                \

  124.     Y = py_2[2*i];                                                \

  125.     dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y];  \

  126.     Y = py_2[2*i+1];                                              \

  127.     dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];

  128. 

  129. #define PROLOG(func_name, dst_type) \

  130. static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \

  131.                      int srcSliceH, uint8_t* dst[], int dstStride[]){\

  132.     int y;\

  133. \

  134.     if (c->srcFormat == PIX_FMT_YUV422P){\

  135.         srcStride[1] *= 2;\

  136.         srcStride[2] *= 2;\

  137.     }\

  138.     for (y=0; y<srcSliceH; y+=2){\

  139.         dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\

  140.         dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\

  141.         dst_type av_unused *r, *b;\

  142.         dst_type *g;\

  143.         uint8_t *py_1= src[0] + y*srcStride[0];\

  144.         uint8_t *py_2= py_1 + srcStride[0];\

  145.         uint8_t *pu= src[1] + (y>>1)*srcStride[1];\

  146.         uint8_t *pv= src[2] + (y>>1)*srcStride[2];\

  147.         unsigned int h_size= c->dstW>>3;\

  148.         while (h_size--) {\

  149.             int av_unused U, V;\

  150.             int Y;\

  151. 

  152. #define EPILOG1(dst_delta)\

  153.             pu += 4;\

  154.             pv += 4;\

  155.             py_1 += 8;\

  156.             py_2 += 8;\

  157.             dst_1 += dst_delta;\

  158.             dst_2 += dst_delta;\

  159.         }\

  160.         if (c->dstW & 4) {\

  161.             int av_unused Y, U, V;\

  162. 

  163. #define EPILOG2()\

  164.         }\

  165.     }\

  166.     return srcSliceH;\

  167. }

  168. 

  169. #define EPILOG(dst_delta)\

  170.     EPILOG1(dst_delta)\

  171.     EPILOG2()

  172. 

  173. PROLOG(yuv2rgb_c_32, uint32_t)

  174.     RGB(0);

  175.     DST1(0);

  176.     DST2(0);

  177. 

  178.     RGB(1);

  179.     DST2(1);

  180.     DST1(1);

  181. 

  182.     RGB(2);

  183.     DST1(2);

  184.     DST2(2);

  185. 

  186.     RGB(3);

  187.     DST2(3);

  188.     DST1(3);

  189. EPILOG1(8)

  190.     RGB(0);

  191.     DST1(0);

  192.     DST2(0);

  193. 

  194.     RGB(1);

  195.     DST2(1);

  196.     DST1(1);

  197. EPILOG2()

  198. 

  199. PROLOG(yuv2rgb_c_24_rgb, uint8_t)

  200.     RGB(0);

  201.     DST1RGB(0);

  202.     DST2RGB(0);

  203. 

  204.     RGB(1);

  205.     DST2RGB(1);

  206.     DST1RGB(1);

  207. 

  208.     RGB(2);

  209.     DST1RGB(2);

  210.     DST2RGB(2);

  211. 

  212.     RGB(3);

  213.     DST2RGB(3);

  214.     DST1RGB(3);

  215. EPILOG1(24)

  216.     RGB(0);

  217.     DST1RGB(0);

  218.     DST2RGB(0);

  219. 

  220.     RGB(1);

  221.     DST2RGB(1);

  222.     DST1RGB(1);

  223. EPILOG2()

  224. 

  225. // only trivial mods from yuv2rgb_c_24_rgb

  226. PROLOG(yuv2rgb_c_24_bgr, uint8_t)

  227.     RGB(0);

  228.     DST1BGR(0);

  229.     DST2BGR(0);

  230. 

  231.     RGB(1);

  232.     DST2BGR(1);

  233.     DST1BGR(1);

  234. 

  235.     RGB(2);

  236.     DST1BGR(2);

  237.     DST2BGR(2);

  238. 

  239.     RGB(3);

  240.     DST2BGR(3);

  241.     DST1BGR(3);

  242. EPILOG1(24)

  243.     RGB(0);

  244.     DST1BGR(0);

  245.     DST2BGR(0);

  246. 

  247.     RGB(1);

  248.     DST2BGR(1);

  249.     DST1BGR(1);

  250. EPILOG2()

  251. 

  252. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  253. // r, g, b, dst_1, dst_2

  254. PROLOG(yuv2rgb_c_16, uint16_t)

  255.     RGB(0);

  256.     DST1(0);

  257.     DST2(0);

  258. 

  259.     RGB(1);

  260.     DST2(1);

  261.     DST1(1);

  262. 

  263.     RGB(2);

  264.     DST1(2);

  265.     DST2(2);

  266. 

  267.     RGB(3);

  268.     DST2(3);

  269.     DST1(3);

  270. EPILOG(8)

  271. 

  272. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  273. // r, g, b, dst_1, dst_2

  274. PROLOG(yuv2rgb_c_8, uint8_t)

  275.     RGB(0);

  276.     DST1(0);

  277.     DST2(0);

  278. 

  279.     RGB(1);

  280.     DST2(1);

  281.     DST1(1);

  282. 

  283.     RGB(2);

  284.     DST1(2);

  285.     DST2(2);

  286. 

  287.     RGB(3);

  288.     DST2(3);

  289.     DST1(3);

  290. EPILOG(8)

  291. 

  292. // r, g, b, dst_1, dst_2

  293. PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)

  294.     const uint8_t *d32= dither_8x8_32[y&7];

  295.     const uint8_t *d64= dither_8x8_73[y&7];

  296. #define DST1bpp8(i,o)                                               \

  297.     Y = py_1[2*i];                                                  \

  298.     dst_1[2*i]   = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]];   \

  299.     Y = py_1[2*i+1];                                                \

  300.     dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];

  301. 

  302. #define DST2bpp8(i,o)                                               \

  303.     Y = py_2[2*i];                                                  \

  304.     dst_2[2*i]   =  r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]];  \

  305.     Y = py_2[2*i+1];                                                \

  306.     dst_2[2*i+1] =  r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];

  307. 

  308. 

  309.     RGB(0);

  310.     DST1bpp8(0,0);

  311.     DST2bpp8(0,0);

  312. 

  313.     RGB(1);

  314.     DST2bpp8(1,2);

  315.     DST1bpp8(1,2);

  316. 

  317.     RGB(2);

  318.     DST1bpp8(2,4);

  319.     DST2bpp8(2,4);

  320. 

  321.     RGB(3);

  322.     DST2bpp8(3,6);

  323.     DST1bpp8(3,6);

  324. EPILOG(8)

  325. 

  326. 

  327. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  328. // r, g, b, dst_1, dst_2

  329. PROLOG(yuv2rgb_c_4, uint8_t)

  330.     int acc;

  331. #define DST1_4(i)                   \

  332.     Y = py_1[2*i];                  \

  333.     acc = r[Y] + g[Y] + b[Y];       \

  334.     Y = py_1[2*i+1];                \

  335.     acc |= (r[Y] + g[Y] + b[Y])<<4; \

  336.     dst_1[i] = acc;

  337. 

  338. #define DST2_4(i)                   \

  339.     Y = py_2[2*i];                  \

  340.     acc = r[Y] + g[Y] + b[Y];       \

  341.     Y = py_2[2*i+1];                \

  342.     acc |= (r[Y] + g[Y] + b[Y])<<4; \

  343.     dst_2[i] = acc;

  344. 

  345.     RGB(0);

  346.     DST1_4(0);

  347.     DST2_4(0);

  348. 

  349.     RGB(1);

  350.     DST2_4(1);

  351.     DST1_4(1);

  352. 

  353.     RGB(2);

  354.     DST1_4(2);

  355.     DST2_4(2);

  356. 

  357.     RGB(3);

  358.     DST2_4(3);

  359.     DST1_4(3);

  360. EPILOG(4)

  361. 

  362. PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)

  363.     const uint8_t *d64= dither_8x8_73[y&7];

  364.     const uint8_t *d128=dither_8x8_220[y&7];

  365.     int acc;

  366. 

  367. #define DST1bpp4(i,o)                                             \

  368.     Y = py_1[2*i];                                                \

  369.     acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];        \

  370.     Y = py_1[2*i+1];                                              \

  371.     acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;  \

  372.     dst_1[i]= acc;

  373. 

  374. #define DST2bpp4(i,o)                                             \

  375.     Y = py_2[2*i];                                                \

  376.     acc =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];       \

  377.     Y = py_2[2*i+1];                                              \

  378.     acc |=  (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4; \

  379.     dst_2[i]= acc;

  380. 

  381. 

  382.     RGB(0);

  383.     DST1bpp4(0,0);

  384.     DST2bpp4(0,0);

  385. 

  386.     RGB(1);

  387.     DST2bpp4(1,2);

  388.     DST1bpp4(1,2);

  389. 

  390.     RGB(2);

  391.     DST1bpp4(2,4);

  392.     DST2bpp4(2,4);

  393. 

  394.     RGB(3);

  395.     DST2bpp4(3,6);

  396.     DST1bpp4(3,6);

  397. EPILOG(4)

  398. 

  399. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  400. // r, g, b, dst_1, dst_2

  401. PROLOG(yuv2rgb_c_4b, uint8_t)

  402.     RGB(0);

  403.     DST1(0);

  404.     DST2(0);

  405. 

  406.     RGB(1);

  407.     DST2(1);

  408.     DST1(1);

  409. 

  410.     RGB(2);

  411.     DST1(2);

  412.     DST2(2);

  413. 

  414.     RGB(3);

  415.     DST2(3);

  416.     DST1(3);

  417. EPILOG(8)

  418. 

  419. PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)

  420.     const uint8_t *d64= dither_8x8_73[y&7];

  421.     const uint8_t *d128=dither_8x8_220[y&7];

  422. 

  423. #define DST1bpp4b(i,o)                                                \

  424.     Y = py_1[2*i];                                                    \

  425.     dst_1[2*i]   = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];   \

  426.     Y = py_1[2*i+1];                                                  \

  427.     dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];

  428. 

  429. #define DST2bpp4b(i,o)                                                \

  430.     Y = py_2[2*i];                                                    \

  431.     dst_2[2*i]   =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];  \

  432.     Y = py_2[2*i+1];                                                  \

  433.     dst_2[2*i+1] =  r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];

  434. 

  435. 

  436.     RGB(0);

  437.     DST1bpp4b(0,0);

  438.     DST2bpp4b(0,0);

  439. 

  440.     RGB(1);

  441.     DST2bpp4b(1,2);

  442.     DST1bpp4b(1,2);

  443. 

  444.     RGB(2);

  445.     DST1bpp4b(2,4);

  446.     DST2bpp4b(2,4);

  447. 

  448.     RGB(3);

  449.     DST2bpp4b(3,6);

  450.     DST1bpp4b(3,6);

  451. EPILOG(8)

  452. 

  453. PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)

  454.         const uint8_t *d128=dither_8x8_220[y&7];

  455.         char out_1=0, out_2=0;

  456.         g= c->table_gU[128] + c->table_gV[128];

  457. 

  458. #define DST1bpp1(i,o)               \

  459.     Y = py_1[2*i];                  \

  460.     out_1+= out_1 + g[Y+d128[0+o]]; \

  461.     Y = py_1[2*i+1];                \

  462.     out_1+= out_1 + g[Y+d128[1+o]];

  463. 

  464. #define DST2bpp1(i,o)               \

  465.     Y = py_2[2*i];                  \

  466.     out_2+= out_2 + g[Y+d128[8+o]]; \

  467.     Y = py_2[2*i+1];                \

  468.     out_2+= out_2 + g[Y+d128[9+o]];

  469. 

  470.     DST1bpp1(0,0);

  471.     DST2bpp1(0,0);

  472. 

  473.     DST2bpp1(1,2);

  474.     DST1bpp1(1,2);

  475. 

  476.     DST1bpp1(2,4);

  477.     DST2bpp1(2,4);

  478. 

  479.     DST2bpp1(3,6);

  480.     DST1bpp1(3,6);

  481. 

  482.     dst_1[0]= out_1;

  483.     dst_2[0]= out_2;

  484. EPILOG(1)

  485. 

  486. SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)

  487. {

  488. #if defined(HAVE_MMX2) || defined(HAVE_MMX)

  489.     if (c->flags & SWS_CPU_CAPS_MMX2){

  490.         switch(c->dstFormat){

  491.         case PIX_FMT_RGB32:  return yuv420_rgb32_MMX2;

  492.         case PIX_FMT_BGR24:  return yuv420_rgb24_MMX2;

  493.         case PIX_FMT_RGB565: return yuv420_rgb16_MMX2;

  494.         case PIX_FMT_RGB555: return yuv420_rgb15_MMX2;

  495.         }

  496.     }

  497.     if (c->flags & SWS_CPU_CAPS_MMX){

  498.         switch(c->dstFormat){

  499.         case PIX_FMT_RGB32:  return yuv420_rgb32_MMX;

  500.         case PIX_FMT_BGR24:  return yuv420_rgb24_MMX;

  501.         case PIX_FMT_RGB565: return yuv420_rgb16_MMX;

  502.         case PIX_FMT_RGB555: return yuv420_rgb15_MMX;

  503.         }

  504.     }

  505. #endif

  506. #ifdef HAVE_VIS

  507.     {

  508.         SwsFunc t= yuv2rgb_init_vis(c);

  509.         if (t) return t;

  510.     }

  511. #endif

  512. #ifdef CONFIG_MLIB

  513.     {

  514.         SwsFunc t= yuv2rgb_init_mlib(c);

  515.         if (t) return t;

  516.     }

  517. #endif

  518. #ifdef HAVE_ALTIVEC

  519.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  520.     {

  521.         SwsFunc t = yuv2rgb_init_altivec(c);

  522.         if (t) return t;

  523.     }

  524. #endif

  525. 

  526. #ifdef ARCH_BFIN

  527.     if (c->flags & SWS_CPU_CAPS_BFIN)

  528.     {

  529.         SwsFunc t = ff_bfin_yuv2rgb_get_func_ptr (c);

  530.         if (t) return t;

  531.     }

  532. #endif

  533. 

  534.     av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found.\n");

  535. 

  536.     switch(c->dstFormat){

  537.     case PIX_FMT_BGR32_1:

  538.     case PIX_FMT_RGB32_1:

  539.     case PIX_FMT_BGR32:

  540.     case PIX_FMT_RGB32: return yuv2rgb_c_32;

  541.     case PIX_FMT_RGB24: return yuv2rgb_c_24_rgb;

  542.     case PIX_FMT_BGR24: return yuv2rgb_c_24_bgr;

  543.     case PIX_FMT_RGB565:

  544.     case PIX_FMT_BGR565:

  545.     case PIX_FMT_RGB555:

  546.     case PIX_FMT_BGR555: return yuv2rgb_c_16;

  547.     case PIX_FMT_RGB8:

  548.     case PIX_FMT_BGR8:  return yuv2rgb_c_8_ordered_dither;

  549.     case PIX_FMT_RGB4:

  550.     case PIX_FMT_BGR4:  return yuv2rgb_c_4_ordered_dither;

  551.     case PIX_FMT_RGB4_BYTE:

  552.     case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;

  553.     case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;

  554.     default:

  555.         assert(0);

  556.     }

  557.     return NULL;

  558. }

  559. 

  560. static int div_round (int dividend, int divisor)

  561. {

  562.     if (dividend > 0)

  563.         return (dividend + (divisor>>1)) / divisor;

  564.     else

  565.         return -((-dividend + (divisor>>1)) / divisor);

  566. }

  567. 

  568. int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)

  569. {

  570.     const int isRgb =      c->dstFormat==PIX_FMT_RGB32

  571.                         || c->dstFormat==PIX_FMT_RGB32_1

  572.                         || c->dstFormat==PIX_FMT_BGR24

  573.                         || c->dstFormat==PIX_FMT_RGB565

  574.                         || c->dstFormat==PIX_FMT_RGB555

  575.                         || c->dstFormat==PIX_FMT_RGB8

  576.                         || c->dstFormat==PIX_FMT_RGB4

  577.                         || c->dstFormat==PIX_FMT_RGB4_BYTE

  578.                         || c->dstFormat==PIX_FMT_MONOBLACK;

  579.     const int bpp = fmt_depth(c->dstFormat);

  580.     int i, base;

  581.     uint8_t table_Y[1024];

  582.     uint32_t *table_32 = 0;

  583.     uint16_t *table_16 = 0;

  584.     uint8_t *table_8 = 0;

  585.     uint8_t *table_332 = 0;

  586.     uint8_t *table_121 = 0;

  587.     uint8_t *table_1 = 0;

  588.     int entry_size = 0;

  589.     void *table_r = 0, *table_g = 0, *table_b = 0;

  590.     void *table_start;

  591. 

  592.     int64_t crv =  inv_table[0];

  593.     int64_t cbu =  inv_table[1];

  594.     int64_t cgu = -inv_table[2];

  595.     int64_t cgv = -inv_table[3];

  596.     int64_t cy  = 1<<16;

  597.     int64_t oy  = 0;

  598. 

  599. //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);

  600.     if (!fullRange){

  601.         cy= (cy*255) / 219;

  602.         oy= 16<<16;

  603.     }else{

  604.         crv= (crv*224) / 255;

  605.         cbu= (cbu*224) / 255;

  606.         cgu= (cgu*224) / 255;

  607.         cgv= (cgv*224) / 255;

  608.     }

  609. 

  610.     cy = (cy *contrast             )>>16;

  611.     crv= (crv*contrast * saturation)>>32;

  612.     cbu= (cbu*contrast * saturation)>>32;

  613.     cgu= (cgu*contrast * saturation)>>32;

  614.     cgv= (cgv*contrast * saturation)>>32;

  615. //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);

  616.     oy -= 256*brightness;

  617. 

  618.     for (i = 0; i < 1024; i++) {

  619.         int j;

  620. 

  621.         j= (cy*(((i - 384)<<16) - oy) + (1<<31))>>32;

  622.         j = (j < 0) ? 0 : ((j > 255) ? 255 : j);

  623.         table_Y[i] = j;

  624.     }

  625. 

  626.     switch (bpp) {

  627.     case 32:

  628.         table_start= table_32 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));

  629.         base= (c->dstFormat == PIX_FMT_RGB32_1 || c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;

  630. 

  631.         entry_size = sizeof (uint32_t);

  632.         table_r = table_32 + 197;

  633.         table_b = table_32 + 197 + 685;

  634.         table_g = table_32 + 197 + 2*682;

  635. 

  636.         for (i = -197; i < 256+197; i++)

  637.             ((uint32_t *)table_r)[i] = table_Y[i+384] << ((isRgb ? 16 : 0) + base);

  638.         for (i = -132; i < 256+132; i++)

  639.             ((uint32_t *)table_g)[i] = table_Y[i+384] << (8                + base);

  640.         for (i = -232; i < 256+232; i++)

  641.             ((uint32_t *)table_b)[i] = table_Y[i+384] << ((isRgb ? 0 : 16) + base);

  642.         break;

  643. 

  644.     case 24:

  645.         table_start= table_8 = av_malloc ((256 + 2*232) * sizeof (uint8_t));

  646. 

  647.         entry_size = sizeof (uint8_t);

  648.         table_r = table_g = table_b = table_8 + 232;

  649. 

  650.         for (i = -232; i < 256+232; i++)

  651.             ((uint8_t * )table_b)[i] = table_Y[i+384];

  652.         break;

  653. 

  654.     case 15:

  655.     case 16:

  656.         table_start= table_16 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));

  657. 

  658.         entry_size = sizeof (uint16_t);

  659.         table_r = table_16 + 197;

  660.         table_b = table_16 + 197 + 685;

  661.         table_g = table_16 + 197 + 2*682;

  662. 

  663.         for (i = -197; i < 256+197; i++) {

  664.             int j = table_Y[i+384] >> 3;

  665. 

  666.             if (isRgb)

  667.                 j <<= ((bpp==16) ? 11 : 10);

  668. 

  669.             ((uint16_t *)table_r)[i] = j;

  670.         }

  671.         for (i = -132; i < 256+132; i++) {

  672.             int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);

  673. 

  674.             ((uint16_t *)table_g)[i] = j << 5;

  675.         }

  676.         for (i = -232; i < 256+232; i++) {

  677.             int j = table_Y[i+384] >> 3;

  678. 

  679.             if (!isRgb)

  680.                 j <<= ((bpp==16) ? 11 : 10);

  681. 

  682.             ((uint16_t *)table_b)[i] = j;

  683.         }

  684.         break;

  685. 

  686.     case 8:

  687.         table_start= table_332 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));

  688. 

  689.         entry_size = sizeof (uint8_t);

  690.         table_r = table_332 + 197;

  691.         table_b = table_332 + 197 + 685;

  692.         table_g = table_332 + 197 + 2*682;

  693. 

  694.         for (i = -197; i < 256+197; i++) {

  695.             int j = (table_Y[i+384 - 16] + 18)/36;

  696. 

  697.             if (isRgb)

  698.                 j <<= 5;

  699. 

  700.             ((uint8_t *)table_r)[i] = j;

  701.         }

  702.         for (i = -132; i < 256+132; i++) {

  703.             int j = (table_Y[i+384 - 16] + 18)/36;

  704. 

  705.             if (!isRgb)

  706.                 j <<= 1;

  707. 

  708.             ((uint8_t *)table_g)[i] = j << 2;

  709.         }

  710.         for (i = -232; i < 256+232; i++) {

  711.             int j = (table_Y[i+384 - 37] + 43)/85;

  712. 

  713.             if (!isRgb)

  714.                 j <<= 6;

  715. 

  716.             ((uint8_t *)table_b)[i] = j;

  717.         }

  718.         break;

  719.     case 4:

  720.     case 4|128:

  721.         table_start= table_121 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));

  722. 

  723.         entry_size = sizeof (uint8_t);

  724.         table_r = table_121 + 197;

  725.         table_b = table_121 + 197 + 685;

  726.         table_g = table_121 + 197 + 2*682;

  727. 

  728.         for (i = -197; i < 256+197; i++) {

  729.             int j = table_Y[i+384 - 110] >> 7;

  730. 

  731.             if (isRgb)

  732.                 j <<= 3;

  733. 

  734.             ((uint8_t *)table_r)[i] = j;

  735.         }

  736.         for (i = -132; i < 256+132; i++) {

  737.             int j = (table_Y[i+384 - 37]+ 43)/85;

  738. 

  739.             ((uint8_t *)table_g)[i] = j << 1;

  740.         }

  741.         for (i = -232; i < 256+232; i++) {

  742.             int j =table_Y[i+384 - 110] >> 7;

  743. 

  744.             if (!isRgb)

  745.                 j <<= 3;

  746. 

  747.             ((uint8_t *)table_b)[i] = j;

  748.         }

  749.         break;

  750. 

  751.     case 1:

  752.         table_start= table_1 = av_malloc (256*2 * sizeof (uint8_t));

  753. 

  754.         entry_size = sizeof (uint8_t);

  755.         table_g = table_1;

  756.         table_r = table_b = NULL;

  757. 

  758.         for (i = 0; i < 256+256; i++) {

  759.             int j = table_Y[i + 384 - 110]>>7;

  760. 

  761.             ((uint8_t *)table_g)[i] = j;

  762.         }

  763.         break;

  764. 

  765.     default:

  766.         table_start= NULL;

  767.         av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);

  768.         //free mem?

  769.         return -1;

  770.     }

  771. 

  772.     for (i = 0; i < 256; i++) {

  773.         c->table_rV[i] = (uint8_t *)table_r + entry_size * div_round (crv * (i-128), cy);

  774.         c->table_gU[i] = (uint8_t *)table_g + entry_size * div_round (cgu * (i-128), cy);

  775.         c->table_gV[i] = entry_size * div_round (cgv * (i-128), cy);

  776.         c->table_bU[i] = (uint8_t *)table_b + entry_size * div_round (cbu * (i-128), cy);

  777.     }

  778. 

  779.     av_free(c->yuvTable);

  780.     c->yuvTable= table_start;

  781.     return 0;

  782. }