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FFmpeg/postproc/swscale.c

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  1. 

  2. // Software scaling and colorspace conversion routines for MPlayer

  3. 

  4. // Orginal C implementation by A'rpi/ESP-team <arpi@thot.banki.hu>

  5. // current version mostly by Michael Niedermayer (michaelni@gmx.at)

  6. // the parts written by michael are under GNU GPL

  7. 

  8. #include <inttypes.h>

  9. #include <string.h>

  10. #include "../config.h"

  11. #include "swscale.h"

  12. #include "../mmx_defs.h"

  13. #undef MOVNTQ

  14. 

  15. //#undef HAVE_MMX2

  16. //#undef HAVE_MMX

  17. //#undef ARCH_X86

  18. #define DITHER1XBPP

  19. int fullUVIpol=0;

  20. //disables the unscaled height version

  21. int allwaysIpol=0;

  22. 

  23. #define RET 0xC3 //near return opcode

  24. /*

  25. NOTES

  26. 

  27. known BUGS with known cause (no bugreports please!, but patches are welcome :) )

  28. horizontal MMX2 scaler reads 1-7 samples too much (might cause a sig11)

  29. 

  30. Supported output formats BGR15 BGR16 BGR24 BGR32

  31. BGR15 & BGR16 MMX verions support dithering

  32. Special versions: fast Y 1:1 scaling (no interpolation in y direction)

  33. 

  34. TODO

  35. more intelligent missalignment avoidance for the horizontal scaler

  36. bicubic scaler

  37. dither in C

  38. change the distance of the u & v buffer

  39. */

  40. 

  41. #define ABS(a) ((a) > 0 ? (a) : (-(a)))

  42. #define MIN(a,b) ((a) > (b) ? (b) : (a))

  43. #define MAX(a,b) ((a) < (b) ? (b) : (a))

  44. 

  45. #ifdef HAVE_MMX2

  46. #define PAVGB(a,b) "pavgb " #a ", " #b " \n\t"

  47. #elif defined (HAVE_3DNOW)

  48. #define PAVGB(a,b) "pavgusb " #a ", " #b " \n\t"

  49. #endif

  50. 

  51. #ifdef HAVE_MMX2

  52. #define MOVNTQ(a,b) "movntq " #a ", " #b " \n\t"

  53. #else

  54. #define MOVNTQ(a,b) "movq " #a ", " #b " \n\t"

  55. #endif

  56. 

  57. 

  58. #ifdef HAVE_MMX

  59. static uint64_t __attribute__((aligned(8))) yCoeff=    0x2568256825682568LL;

  60. static uint64_t __attribute__((aligned(8))) vrCoeff=   0x3343334333433343LL;

  61. static uint64_t __attribute__((aligned(8))) ubCoeff=   0x40cf40cf40cf40cfLL;

  62. static uint64_t __attribute__((aligned(8))) vgCoeff=   0xE5E2E5E2E5E2E5E2LL;

  63. static uint64_t __attribute__((aligned(8))) ugCoeff=   0xF36EF36EF36EF36ELL;

  64. static uint64_t __attribute__((aligned(8))) bF8=       0xF8F8F8F8F8F8F8F8LL;

  65. static uint64_t __attribute__((aligned(8))) bFC=       0xFCFCFCFCFCFCFCFCLL;

  66. static uint64_t __attribute__((aligned(8))) w400=      0x0400040004000400LL;

  67. static uint64_t __attribute__((aligned(8))) w80=       0x0080008000800080LL;

  68. static uint64_t __attribute__((aligned(8))) w10=       0x0010001000100010LL;

  69. static uint64_t __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;

  70. static uint64_t __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;

  71. static uint64_t __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;

  72. 

  73. static uint64_t __attribute__((aligned(8))) b16Dither= 0x0004000400040004LL;

  74. static uint64_t __attribute__((aligned(8))) b16Dither1=0x0004000400040004LL;

  75. static uint64_t __attribute__((aligned(8))) b16Dither2=0x0602060206020602LL;

  76. static uint64_t __attribute__((aligned(8))) g16Dither= 0x0002000200020002LL;

  77. static uint64_t __attribute__((aligned(8))) g16Dither1=0x0002000200020002LL;

  78. static uint64_t __attribute__((aligned(8))) g16Dither2=0x0301030103010301LL;

  79. 

  80. static uint64_t __attribute__((aligned(8))) b16Mask=   0x001F001F001F001FLL;

  81. static uint64_t __attribute__((aligned(8))) g16Mask=   0x07E007E007E007E0LL;

  82. static uint64_t __attribute__((aligned(8))) r16Mask=   0xF800F800F800F800LL;

  83. static uint64_t __attribute__((aligned(8))) b15Mask=   0x001F001F001F001FLL;

  84. static uint64_t __attribute__((aligned(8))) g15Mask=   0x03E003E003E003E0LL;

  85. static uint64_t __attribute__((aligned(8))) r15Mask=   0x7C007C007C007C00LL;

  86. 

  87. static uint64_t __attribute__((aligned(8))) temp0;

  88. static uint64_t __attribute__((aligned(8))) asm_yalpha1;

  89. static uint64_t __attribute__((aligned(8))) asm_uvalpha1;

  90. #endif

  91. 

  92. // temporary storage for 4 yuv lines:

  93. // 16bit for now (mmx likes it more compact)

  94. #ifdef HAVE_MMX

  95. static uint16_t __attribute__((aligned(8))) pix_buf_y[4][2048];

  96. static uint16_t __attribute__((aligned(8))) pix_buf_uv[2][2048*2];

  97. #else

  98. static uint16_t pix_buf_y[4][2048];

  99. static uint16_t pix_buf_uv[2][2048*2];

  100. #endif

  101. 

  102. // clipping helper table for C implementations:

  103. static unsigned char clip_table[768];

  104. 

  105. static unsigned short clip_table16b[768];

  106. static unsigned short clip_table16g[768];

  107. static unsigned short clip_table16r[768];

  108. static unsigned short clip_table15b[768];

  109. static unsigned short clip_table15g[768];

  110. static unsigned short clip_table15r[768];

  111. 

  112. // yuv->rgb conversion tables:

  113. static    int yuvtab_2568[256];

  114. static    int yuvtab_3343[256];

  115. static    int yuvtab_0c92[256];

  116. static    int yuvtab_1a1e[256];

  117. static    int yuvtab_40cf[256];

  118. 

  119. #ifdef HAVE_MMX2

  120. static uint8_t funnyYCode[10000];

  121. static uint8_t funnyUVCode[10000];

  122. #endif

  123. 

  124. static int canMMX2BeUsed=0;

  125. 

  126. #define FULL_YSCALEYUV2RGB \

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

  128. 		"movd %6, %%mm6			\n\t" /*yalpha1*/\

  129. 		"punpcklwd %%mm6, %%mm6		\n\t"\

  130. 		"punpcklwd %%mm6, %%mm6		\n\t"\

  131. 		"movd %7, %%mm5			\n\t" /*uvalpha1*/\

  132. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  133. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  134. 		"xorl %%eax, %%eax		\n\t"\

  135. 		"1:				\n\t"\

  136. 		"movq (%0, %%eax, 2), %%mm0	\n\t" /*buf0[eax]*/\

  137. 		"movq (%1, %%eax, 2), %%mm1	\n\t" /*buf1[eax]*/\

  138. 		"movq (%2, %%eax,2), %%mm2	\n\t" /* uvbuf0[eax]*/\

  139. 		"movq (%3, %%eax,2), %%mm3	\n\t" /* uvbuf1[eax]*/\

  140. 		"psubw %%mm1, %%mm0		\n\t" /* buf0[eax] - buf1[eax]*/\

  141. 		"psubw %%mm3, %%mm2		\n\t" /* uvbuf0[eax] - uvbuf1[eax]*/\

  142. 		"pmulhw %%mm6, %%mm0		\n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\

  143. 		"pmulhw %%mm5, %%mm2		\n\t" /* (uvbuf0[eax] - uvbuf1[eax])uvalpha1>>16*/\

  144. 		"psraw $4, %%mm1		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  145. 		"movq 4096(%2, %%eax,2), %%mm4	\n\t" /* uvbuf0[eax+2048]*/\

  146. 		"psraw $4, %%mm3		\n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\

  147. 		"paddw %%mm0, %%mm1		\n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\

  148. 		"movq 4096(%3, %%eax,2), %%mm0	\n\t" /* uvbuf1[eax+2048]*/\

  149. 		"paddw %%mm2, %%mm3		\n\t" /* uvbuf0[eax]uvalpha1 - uvbuf1[eax](1-uvalpha1)*/\

  150. 		"psubw %%mm0, %%mm4		\n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048]*/\

  151. 		"psubw w80, %%mm1		\n\t" /* 8(Y-16)*/\

  152. 		"psubw w400, %%mm3		\n\t" /* 8(U-128)*/\

  153. 		"pmulhw yCoeff, %%mm1		\n\t"\

  154. \

  155. \

  156. 		"pmulhw %%mm5, %%mm4		\n\t" /* (uvbuf0[eax+2048] - uvbuf1[eax+2048])uvalpha1>>16*/\

  157. 		"movq %%mm3, %%mm2		\n\t" /* (U-128)8*/\

  158. 		"pmulhw ubCoeff, %%mm3		\n\t"\

  159. 		"psraw $4, %%mm0		\n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\

  160. 		"pmulhw ugCoeff, %%mm2		\n\t"\

  161. 		"paddw %%mm4, %%mm0		\n\t" /* uvbuf0[eax+2048]uvalpha1 - uvbuf1[eax+2048](1-uvalpha1)*/\

  162. 		"psubw w400, %%mm0		\n\t" /* (V-128)8*/\

  163. \

  164. \

  165. 		"movq %%mm0, %%mm4		\n\t" /* (V-128)8*/\

  166. 		"pmulhw vrCoeff, %%mm0		\n\t"\

  167. 		"pmulhw vgCoeff, %%mm4		\n\t"\

  168. 		"paddw %%mm1, %%mm3		\n\t" /* B*/\

  169. 		"paddw %%mm1, %%mm0		\n\t" /* R*/\

  170. 		"packuswb %%mm3, %%mm3		\n\t"\

  171. \

  172. 		"packuswb %%mm0, %%mm0		\n\t"\

  173. 		"paddw %%mm4, %%mm2		\n\t"\

  174. 		"paddw %%mm2, %%mm1		\n\t" /* G*/\

  175. \

  176. 		"packuswb %%mm1, %%mm1		\n\t"

  177. 

  178. #define YSCALEYUV2RGB \

  179. 		"movd %6, %%mm6			\n\t" /*yalpha1*/\

  180. 		"punpcklwd %%mm6, %%mm6		\n\t"\

  181. 		"punpcklwd %%mm6, %%mm6		\n\t"\

  182. 		"movq %%mm6, asm_yalpha1	\n\t"\

  183. 		"movd %7, %%mm5			\n\t" /*uvalpha1*/\

  184. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  185. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  186. 		"movq %%mm5, asm_uvalpha1	\n\t"\

  187. 		"xorl %%eax, %%eax		\n\t"\

  188. 		"1:				\n\t"\

  189. 		"movq (%2, %%eax), %%mm2	\n\t" /* uvbuf0[eax]*/\

  190. 		"movq (%3, %%eax), %%mm3	\n\t" /* uvbuf1[eax]*/\

  191. 		"movq 4096(%2, %%eax), %%mm5	\n\t" /* uvbuf0[eax+2048]*/\

  192. 		"movq 4096(%3, %%eax), %%mm4	\n\t" /* uvbuf1[eax+2048]*/\

  193. 		"psubw %%mm3, %%mm2		\n\t" /* uvbuf0[eax] - uvbuf1[eax]*/\

  194. 		"psubw %%mm4, %%mm5		\n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048]*/\

  195. 		"movq asm_uvalpha1, %%mm0	\n\t"\

  196. 		"pmulhw %%mm0, %%mm2		\n\t" /* (uvbuf0[eax] - uvbuf1[eax])uvalpha1>>16*/\

  197. 		"pmulhw %%mm0, %%mm5		\n\t" /* (uvbuf0[eax+2048] - uvbuf1[eax+2048])uvalpha1>>16*/\

  198. 		"psraw $4, %%mm3		\n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\

  199. 		"psraw $4, %%mm4		\n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\

  200. 		"paddw %%mm2, %%mm3		\n\t" /* uvbuf0[eax]uvalpha1 - uvbuf1[eax](1-uvalpha1)*/\

  201. 		"paddw %%mm5, %%mm4		\n\t" /* uvbuf0[eax+2048]uvalpha1 - uvbuf1[eax+2048](1-uvalpha1)*/\

  202. 		"psubw w400, %%mm3		\n\t" /* (U-128)8*/\

  203. 		"psubw w400, %%mm4		\n\t" /* (V-128)8*/\

  204. 		"movq %%mm3, %%mm2		\n\t" /* (U-128)8*/\

  205. 		"movq %%mm4, %%mm5		\n\t" /* (V-128)8*/\

  206. 		"pmulhw ugCoeff, %%mm3		\n\t"\

  207. 		"pmulhw vgCoeff, %%mm4		\n\t"\

  208. 	/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\

  209. 		"movq (%0, %%eax, 2), %%mm0	\n\t" /*buf0[eax]*/\

  210. 		"movq (%1, %%eax, 2), %%mm1	\n\t" /*buf1[eax]*/\

  211. 		"movq 8(%0, %%eax, 2), %%mm6	\n\t" /*buf0[eax]*/\

  212. 		"movq 8(%1, %%eax, 2), %%mm7	\n\t" /*buf1[eax]*/\

  213. 		"psubw %%mm1, %%mm0		\n\t" /* buf0[eax] - buf1[eax]*/\

  214. 		"psubw %%mm7, %%mm6		\n\t" /* buf0[eax] - buf1[eax]*/\

  215. 		"pmulhw asm_yalpha1, %%mm0	\n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\

  216. 		"pmulhw asm_yalpha1, %%mm6	\n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\

  217. 		"psraw $4, %%mm1		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  218. 		"psraw $4, %%mm7		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  219. 		"paddw %%mm0, %%mm1		\n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\

  220. 		"paddw %%mm6, %%mm7		\n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\

  221. 		"pmulhw ubCoeff, %%mm2		\n\t"\

  222. 		"pmulhw vrCoeff, %%mm5		\n\t"\

  223. 		"psubw w80, %%mm1		\n\t" /* 8(Y-16)*/\

  224. 		"psubw w80, %%mm7		\n\t" /* 8(Y-16)*/\

  225. 		"pmulhw yCoeff, %%mm1		\n\t"\

  226. 		"pmulhw yCoeff, %%mm7		\n\t"\

  227. 	/* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\

  228. 		"paddw %%mm3, %%mm4		\n\t"\

  229. 		"movq %%mm2, %%mm0		\n\t"\

  230. 		"movq %%mm5, %%mm6		\n\t"\

  231. 		"movq %%mm4, %%mm3		\n\t"\

  232. 		"punpcklwd %%mm2, %%mm2		\n\t"\

  233. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  234. 		"punpcklwd %%mm4, %%mm4		\n\t"\

  235. 		"paddw %%mm1, %%mm2		\n\t"\

  236. 		"paddw %%mm1, %%mm5		\n\t"\

  237. 		"paddw %%mm1, %%mm4		\n\t"\

  238. 		"punpckhwd %%mm0, %%mm0		\n\t"\

  239. 		"punpckhwd %%mm6, %%mm6		\n\t"\

  240. 		"punpckhwd %%mm3, %%mm3		\n\t"\

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

  242. 		"paddw %%mm7, %%mm6		\n\t"\

  243. 		"paddw %%mm7, %%mm3		\n\t"\

  244. 		/* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\

  245. 		"packuswb %%mm0, %%mm2		\n\t"\

  246. 		"packuswb %%mm6, %%mm5		\n\t"\

  247. 		"packuswb %%mm3, %%mm4		\n\t"\

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

  249. 

  250. #define YSCALEYUV2RGB1 \

  251. 		"xorl %%eax, %%eax		\n\t"\

  252. 		"1:				\n\t"\

  253. 		"movq (%2, %%eax), %%mm3	\n\t" /* uvbuf0[eax]*/\

  254. 		"movq 4096(%2, %%eax), %%mm4	\n\t" /* uvbuf0[eax+2048]*/\

  255. 		"psraw $4, %%mm3		\n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\

  256. 		"psraw $4, %%mm4		\n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\

  257. 		"psubw w400, %%mm3		\n\t" /* (U-128)8*/\

  258. 		"psubw w400, %%mm4		\n\t" /* (V-128)8*/\

  259. 		"movq %%mm3, %%mm2		\n\t" /* (U-128)8*/\

  260. 		"movq %%mm4, %%mm5		\n\t" /* (V-128)8*/\

  261. 		"pmulhw ugCoeff, %%mm3		\n\t"\

  262. 		"pmulhw vgCoeff, %%mm4		\n\t"\

  263. 	/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\

  264. 		"movq (%0, %%eax, 2), %%mm1	\n\t" /*buf0[eax]*/\

  265. 		"movq 8(%0, %%eax, 2), %%mm7	\n\t" /*buf0[eax]*/\

  266. 		"psraw $4, %%mm1		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  267. 		"psraw $4, %%mm7		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  268. 		"pmulhw ubCoeff, %%mm2		\n\t"\

  269. 		"pmulhw vrCoeff, %%mm5		\n\t"\

  270. 		"psubw w80, %%mm1		\n\t" /* 8(Y-16)*/\

  271. 		"psubw w80, %%mm7		\n\t" /* 8(Y-16)*/\

  272. 		"pmulhw yCoeff, %%mm1		\n\t"\

  273. 		"pmulhw yCoeff, %%mm7		\n\t"\

  274. 	/* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\

  275. 		"paddw %%mm3, %%mm4		\n\t"\

  276. 		"movq %%mm2, %%mm0		\n\t"\

  277. 		"movq %%mm5, %%mm6		\n\t"\

  278. 		"movq %%mm4, %%mm3		\n\t"\

  279. 		"punpcklwd %%mm2, %%mm2		\n\t"\

  280. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  281. 		"punpcklwd %%mm4, %%mm4		\n\t"\

  282. 		"paddw %%mm1, %%mm2		\n\t"\

  283. 		"paddw %%mm1, %%mm5		\n\t"\

  284. 		"paddw %%mm1, %%mm4		\n\t"\

  285. 		"punpckhwd %%mm0, %%mm0		\n\t"\

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

  287. 		"punpckhwd %%mm3, %%mm3		\n\t"\

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

  289. 		"paddw %%mm7, %%mm6		\n\t"\

  290. 		"paddw %%mm7, %%mm3		\n\t"\

  291. 		/* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\

  292. 		"packuswb %%mm0, %%mm2		\n\t"\

  293. 		"packuswb %%mm6, %%mm5		\n\t"\

  294. 		"packuswb %%mm3, %%mm4		\n\t"\

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

  296. 

  297. // do vertical chrominance interpolation

  298. #define YSCALEYUV2RGB1b \

  299. 		"xorl %%eax, %%eax		\n\t"\

  300. 		"1:				\n\t"\

  301. 		"movq (%2, %%eax), %%mm2	\n\t" /* uvbuf0[eax]*/\

  302. 		"movq (%3, %%eax), %%mm3	\n\t" /* uvbuf1[eax]*/\

  303. 		"movq 4096(%2, %%eax), %%mm5	\n\t" /* uvbuf0[eax+2048]*/\

  304. 		"movq 4096(%3, %%eax), %%mm4	\n\t" /* uvbuf1[eax+2048]*/\

  305. 		"paddw %%mm2, %%mm3		\n\t" /* uvbuf0[eax] + uvbuf1[eax]*/\

  306. 		"paddw %%mm5, %%mm4		\n\t" /* uvbuf0[eax+2048] + uvbuf1[eax+2048]*/\

  307. 		"psrlw $5, %%mm3		\n\t"\

  308. 		"psrlw $5, %%mm4		\n\t"\

  309. 		"psubw w400, %%mm3		\n\t" /* (U-128)8*/\

  310. 		"psubw w400, %%mm4		\n\t" /* (V-128)8*/\

  311. 		"movq %%mm3, %%mm2		\n\t" /* (U-128)8*/\

  312. 		"movq %%mm4, %%mm5		\n\t" /* (V-128)8*/\

  313. 		"pmulhw ugCoeff, %%mm3		\n\t"\

  314. 		"pmulhw vgCoeff, %%mm4		\n\t"\

  315. 	/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\

  316. 		"movq (%0, %%eax, 2), %%mm1	\n\t" /*buf0[eax]*/\

  317. 		"movq 8(%0, %%eax, 2), %%mm7	\n\t" /*buf0[eax]*/\

  318. 		"psraw $4, %%mm1		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  319. 		"psraw $4, %%mm7		\n\t" /* buf0[eax] - buf1[eax] >>4*/\

  320. 		"pmulhw ubCoeff, %%mm2		\n\t"\

  321. 		"pmulhw vrCoeff, %%mm5		\n\t"\

  322. 		"psubw w80, %%mm1		\n\t" /* 8(Y-16)*/\

  323. 		"psubw w80, %%mm7		\n\t" /* 8(Y-16)*/\

  324. 		"pmulhw yCoeff, %%mm1		\n\t"\

  325. 		"pmulhw yCoeff, %%mm7		\n\t"\

  326. 	/* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\

  327. 		"paddw %%mm3, %%mm4		\n\t"\

  328. 		"movq %%mm2, %%mm0		\n\t"\

  329. 		"movq %%mm5, %%mm6		\n\t"\

  330. 		"movq %%mm4, %%mm3		\n\t"\

  331. 		"punpcklwd %%mm2, %%mm2		\n\t"\

  332. 		"punpcklwd %%mm5, %%mm5		\n\t"\

  333. 		"punpcklwd %%mm4, %%mm4		\n\t"\

  334. 		"paddw %%mm1, %%mm2		\n\t"\

  335. 		"paddw %%mm1, %%mm5		\n\t"\

  336. 		"paddw %%mm1, %%mm4		\n\t"\

  337. 		"punpckhwd %%mm0, %%mm0		\n\t"\

  338. 		"punpckhwd %%mm6, %%mm6		\n\t"\

  339. 		"punpckhwd %%mm3, %%mm3		\n\t"\

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

  341. 		"paddw %%mm7, %%mm6		\n\t"\

  342. 		"paddw %%mm7, %%mm3		\n\t"\

  343. 		/* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\

  344. 		"packuswb %%mm0, %%mm2		\n\t"\

  345. 		"packuswb %%mm6, %%mm5		\n\t"\

  346. 		"packuswb %%mm3, %%mm4		\n\t"\

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

  348. 

  349. #define WRITEBGR32 \

  350. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */\

  351. 			"movq %%mm2, %%mm1		\n\t" /* B */\

  352. 			"movq %%mm5, %%mm6		\n\t" /* R */\

  353. 			"punpcklbw %%mm4, %%mm2		\n\t" /* GBGBGBGB 0 */\

  354. 			"punpcklbw %%mm7, %%mm5		\n\t" /* 0R0R0R0R 0 */\

  355. 			"punpckhbw %%mm4, %%mm1		\n\t" /* GBGBGBGB 2 */\

  356. 			"punpckhbw %%mm7, %%mm6		\n\t" /* 0R0R0R0R 2 */\

  357. 			"movq %%mm2, %%mm0		\n\t" /* GBGBGBGB 0 */\

  358. 			"movq %%mm1, %%mm3		\n\t" /* GBGBGBGB 2 */\

  359. 			"punpcklwd %%mm5, %%mm0		\n\t" /* 0RGB0RGB 0 */\

  360. 			"punpckhwd %%mm5, %%mm2		\n\t" /* 0RGB0RGB 1 */\

  361. 			"punpcklwd %%mm6, %%mm1		\n\t" /* 0RGB0RGB 2 */\

  362. 			"punpckhwd %%mm6, %%mm3		\n\t" /* 0RGB0RGB 3 */\

  363. \

  364. 			MOVNTQ(%%mm0, (%4, %%eax, 4))\

  365. 			MOVNTQ(%%mm2, 8(%4, %%eax, 4))\

  366. 			MOVNTQ(%%mm1, 16(%4, %%eax, 4))\

  367. 			MOVNTQ(%%mm3, 24(%4, %%eax, 4))\

  368. \

  369. 			"addl $8, %%eax			\n\t"\

  370. 			"cmpl %5, %%eax			\n\t"\

  371. 			" jb 1b				\n\t"

  372. 

  373. #define WRITEBGR16 \

  374. 			"pand bF8, %%mm2		\n\t" /* B */\

  375. 			"pand bFC, %%mm4		\n\t" /* G */\

  376. 			"pand bF8, %%mm5		\n\t" /* R */\

  377. 			"psrlq $3, %%mm2		\n\t"\

  378. \

  379. 			"movq %%mm2, %%mm1		\n\t"\

  380. 			"movq %%mm4, %%mm3		\n\t"\

  381. \

  382. 			"punpcklbw %%mm7, %%mm3		\n\t"\

  383. 			"punpcklbw %%mm5, %%mm2		\n\t"\

  384. 			"punpckhbw %%mm7, %%mm4		\n\t"\

  385. 			"punpckhbw %%mm5, %%mm1		\n\t"\

  386. \

  387. 			"psllq $3, %%mm3		\n\t"\

  388. 			"psllq $3, %%mm4		\n\t"\

  389. \

  390. 			"por %%mm3, %%mm2		\n\t"\

  391. 			"por %%mm4, %%mm1		\n\t"\

  392. \

  393. 			MOVNTQ(%%mm2, (%4, %%eax, 2))\

  394. 			MOVNTQ(%%mm1, 8(%4, %%eax, 2))\

  395. \

  396. 			"addl $8, %%eax			\n\t"\

  397. 			"cmpl %5, %%eax			\n\t"\

  398. 			" jb 1b				\n\t"

  399. 

  400. #define WRITEBGR15 \

  401. 			"pand bF8, %%mm2		\n\t" /* B */\

  402. 			"pand bF8, %%mm4		\n\t" /* G */\

  403. 			"pand bF8, %%mm5		\n\t" /* R */\

  404. 			"psrlq $3, %%mm2		\n\t"\

  405. 			"psrlq $1, %%mm5		\n\t"\

  406. \

  407. 			"movq %%mm2, %%mm1		\n\t"\

  408. 			"movq %%mm4, %%mm3		\n\t"\

  409. \

  410. 			"punpcklbw %%mm7, %%mm3		\n\t"\

  411. 			"punpcklbw %%mm5, %%mm2		\n\t"\

  412. 			"punpckhbw %%mm7, %%mm4		\n\t"\

  413. 			"punpckhbw %%mm5, %%mm1		\n\t"\

  414. \

  415. 			"psllq $2, %%mm3		\n\t"\

  416. 			"psllq $2, %%mm4		\n\t"\

  417. \

  418. 			"por %%mm3, %%mm2		\n\t"\

  419. 			"por %%mm4, %%mm1		\n\t"\

  420. \

  421. 			MOVNTQ(%%mm2, (%4, %%eax, 2))\

  422. 			MOVNTQ(%%mm1, 8(%4, %%eax, 2))\

  423. \

  424. 			"addl $8, %%eax			\n\t"\

  425. 			"cmpl %5, %%eax			\n\t"\

  426. 			" jb 1b				\n\t"

  427. 

  428. // FIXME find a faster way to shuffle it to BGR24

  429. #define WRITEBGR24 \

  430. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */\

  431. 			"movq %%mm2, %%mm1		\n\t" /* B */\

  432. 			"movq %%mm5, %%mm6		\n\t" /* R */\

  433. 			"punpcklbw %%mm4, %%mm2		\n\t" /* GBGBGBGB 0 */\

  434. 			"punpcklbw %%mm7, %%mm5		\n\t" /* 0R0R0R0R 0 */\

  435. 			"punpckhbw %%mm4, %%mm1		\n\t" /* GBGBGBGB 2 */\

  436. 			"punpckhbw %%mm7, %%mm6		\n\t" /* 0R0R0R0R 2 */\

  437. 			"movq %%mm2, %%mm0		\n\t" /* GBGBGBGB 0 */\

  438. 			"movq %%mm1, %%mm3		\n\t" /* GBGBGBGB 2 */\

  439. 			"punpcklwd %%mm5, %%mm0		\n\t" /* 0RGB0RGB 0 */\

  440. 			"punpckhwd %%mm5, %%mm2		\n\t" /* 0RGB0RGB 1 */\

  441. 			"punpcklwd %%mm6, %%mm1		\n\t" /* 0RGB0RGB 2 */\

  442. 			"punpckhwd %%mm6, %%mm3		\n\t" /* 0RGB0RGB 3 */\

  443. \

  444. 			"movq %%mm0, %%mm4		\n\t" /* 0RGB0RGB 0 */\

  445. 			"psrlq $8, %%mm0		\n\t" /* 00RGB0RG 0 */\

  446. 			"pand bm00000111, %%mm4		\n\t" /* 00000RGB 0 */\

  447. 			"pand bm11111000, %%mm0		\n\t" /* 00RGB000 0.5 */\

  448. 			"por %%mm4, %%mm0		\n\t" /* 00RGBRGB 0 */\

  449. 			"movq %%mm2, %%mm4		\n\t" /* 0RGB0RGB 1 */\

  450. 			"psllq $48, %%mm2		\n\t" /* GB000000 1 */\

  451. 			"por %%mm2, %%mm0		\n\t" /* GBRGBRGB 0 */\

  452. \

  453. 			"movq %%mm4, %%mm2		\n\t" /* 0RGB0RGB 1 */\

  454. 			"psrld $16, %%mm4		\n\t" /* 000R000R 1 */\

  455. 			"psrlq $24, %%mm2		\n\t" /* 0000RGB0 1.5 */\

  456. 			"por %%mm4, %%mm2		\n\t" /* 000RRGBR 1 */\

  457. 			"pand bm00001111, %%mm2		\n\t" /* 0000RGBR 1 */\

  458. 			"movq %%mm1, %%mm4		\n\t" /* 0RGB0RGB 2 */\

  459. 			"psrlq $8, %%mm1		\n\t" /* 00RGB0RG 2 */\

  460. 			"pand bm00000111, %%mm4		\n\t" /* 00000RGB 2 */\

  461. 			"pand bm11111000, %%mm1		\n\t" /* 00RGB000 2.5 */\

  462. 			"por %%mm4, %%mm1		\n\t" /* 00RGBRGB 2 */\

  463. 			"movq %%mm1, %%mm4		\n\t" /* 00RGBRGB 2 */\

  464. 			"psllq $32, %%mm1		\n\t" /* BRGB0000 2 */\

  465. 			"por %%mm1, %%mm2		\n\t" /* BRGBRGBR 1 */\

  466. \

  467. 			"psrlq $32, %%mm4		\n\t" /* 000000RG 2.5 */\

  468. 			"movq %%mm3, %%mm5		\n\t" /* 0RGB0RGB 3 */\

  469. 			"psrlq $8, %%mm3		\n\t" /* 00RGB0RG 3 */\

  470. 			"pand bm00000111, %%mm5		\n\t" /* 00000RGB 3 */\

  471. 			"pand bm11111000, %%mm3		\n\t" /* 00RGB000 3.5 */\

  472. 			"por %%mm5, %%mm3		\n\t" /* 00RGBRGB 3 */\

  473. 			"psllq $16, %%mm3		\n\t" /* RGBRGB00 3 */\

  474. 			"por %%mm4, %%mm3		\n\t" /* RGBRGBRG 2.5 */\

  475. \

  476. 			"leal (%%eax, %%eax, 2), %%ebx	\n\t"\

  477. 			MOVNTQ(%%mm0, (%4, %%ebx))\

  478. 			MOVNTQ(%%mm2, 8(%4, %%ebx))\

  479. 			MOVNTQ(%%mm3, 16(%4, %%ebx))\

  480. \

  481. 			"addl $8, %%eax			\n\t"\

  482. 			"cmpl %5, %%eax			\n\t"\

  483. 			" jb 1b				\n\t"

  484. 

  485. #ifdef HAVE_MMX

  486. void in_asm_used_var_warning_killer()

  487. {

  488.  int i= yCoeff+vrCoeff+ubCoeff+vgCoeff+ugCoeff+bF8+bFC+w400+w80+w10+

  489.  bm00001111+bm00000111+bm11111000+b16Dither+b16Dither1+b16Dither2+g16Dither+g16Dither1+

  490.  g16Dither2+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+temp0+asm_yalpha1+ asm_uvalpha1;

  491.  if(i) i=0;

  492. }

  493. #endif

  494. 

  495. static inline void yuv2yuv(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, uint16_t *uvbuf1,

  496. 			   uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstw, int yalpha, int uvalpha)

  497. {

  498. 	int yalpha1=yalpha^4095;

  499. 	int uvalpha1=uvalpha^4095;

  500. 	int i;

  501. 

  502. 	asm volatile ("\n\t"::: "memory");

  503. 

  504. 	for(i=0;i<dstw;i++)

  505. 	{

  506. 		((uint8_t*)dest)[i] = (buf0[i]*yalpha1+buf1[i]*yalpha)>>19;

  507. 	}

  508. 

  509. 	if(uvalpha != -1)

  510. 	{

  511. 		for(i=0; i<(dstw>>1); i++)

  512. 		{

  513. 			((uint8_t*)uDest)[i] = (uvbuf0[i]*uvalpha1+uvbuf1[i]*uvalpha)>>19;

  514. 			((uint8_t*)vDest)[i] = (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;

  515. 		}

  516. 	}

  517. }

  518. 

  519. /**

  520.  * vertical scale YV12 to RGB

  521.  */

  522. static inline void yuv2rgbX(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, uint16_t *uvbuf1,

  523. 			    uint8_t *dest, int dstw, int yalpha, int uvalpha, int dstbpp)

  524. {

  525. 	int yalpha1=yalpha^4095;

  526. 	int uvalpha1=uvalpha^4095;

  527. 

  528. 	if(fullUVIpol)

  529. 	{

  530. 

  531. #ifdef HAVE_MMX

  532. 		if(dstbpp == 32)

  533. 		{

  534. 			asm volatile(

  535. 

  536. 

  537. FULL_YSCALEYUV2RGB

  538. 			"punpcklbw %%mm1, %%mm3		\n\t" // BGBGBGBG

  539. 			"punpcklbw %%mm7, %%mm0		\n\t" // R0R0R0R0

  540. 

  541. 			"movq %%mm3, %%mm1		\n\t"

  542. 			"punpcklwd %%mm0, %%mm3		\n\t" // BGR0BGR0

  543. 			"punpckhwd %%mm0, %%mm1		\n\t" // BGR0BGR0

  544. 

  545. 			MOVNTQ(%%mm3, (%4, %%eax, 4))

  546. 			MOVNTQ(%%mm1, 8(%4, %%eax, 4))

  547. 

  548. 			"addl $4, %%eax			\n\t"

  549. 			"cmpl %5, %%eax			\n\t"

  550. 			" jb 1b				\n\t"

  551. 

  552. 

  553. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  554. 			"m" (yalpha1), "m" (uvalpha1)

  555. 			: "%eax"

  556. 			);

  557. 		}

  558. 		else if(dstbpp==24)

  559. 		{

  560. 			asm volatile(

  561. 

  562. FULL_YSCALEYUV2RGB

  563. 

  564. 								// lsb ... msb

  565. 			"punpcklbw %%mm1, %%mm3		\n\t" // BGBGBGBG

  566. 			"punpcklbw %%mm7, %%mm0		\n\t" // R0R0R0R0

  567. 

  568. 			"movq %%mm3, %%mm1		\n\t"

  569. 			"punpcklwd %%mm0, %%mm3		\n\t" // BGR0BGR0

  570. 			"punpckhwd %%mm0, %%mm1		\n\t" // BGR0BGR0

  571. 

  572. 			"movq %%mm3, %%mm2		\n\t" // BGR0BGR0

  573. 			"psrlq $8, %%mm3		\n\t" // GR0BGR00

  574. 			"pand bm00000111, %%mm2		\n\t" // BGR00000

  575. 			"pand bm11111000, %%mm3		\n\t" // 000BGR00

  576. 			"por %%mm2, %%mm3		\n\t" // BGRBGR00

  577. 			"movq %%mm1, %%mm2		\n\t"

  578. 			"psllq $48, %%mm1		\n\t" // 000000BG

  579. 			"por %%mm1, %%mm3		\n\t" // BGRBGRBG

  580. 

  581. 			"movq %%mm2, %%mm1		\n\t" // BGR0BGR0

  582. 			"psrld $16, %%mm2		\n\t" // R000R000

  583. 			"psrlq $24, %%mm1		\n\t" // 0BGR0000

  584. 			"por %%mm2, %%mm1		\n\t" // RBGRR000

  585. 

  586. 			"movl %4, %%ebx			\n\t"

  587. 			"addl %%eax, %%ebx		\n\t"

  588. 

  589. #ifdef HAVE_MMX2

  590. 			//FIXME Alignment

  591. 			"movntq %%mm3, (%%ebx, %%eax, 2)\n\t"

  592. 			"movntq %%mm1, 8(%%ebx, %%eax, 2)\n\t"

  593. #else

  594. 			"movd %%mm3, (%%ebx, %%eax, 2)	\n\t"

  595. 			"psrlq $32, %%mm3		\n\t"

  596. 			"movd %%mm3, 4(%%ebx, %%eax, 2)	\n\t"

  597. 			"movd %%mm1, 8(%%ebx, %%eax, 2)	\n\t"

  598. #endif

  599. 			"addl $4, %%eax			\n\t"

  600. 			"cmpl %5, %%eax			\n\t"

  601. 			" jb 1b				\n\t"

  602. 

  603. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "m" (dest), "m" (dstw),

  604. 			"m" (yalpha1), "m" (uvalpha1)

  605. 			: "%eax", "%ebx"

  606. 			);

  607. 		}

  608. 		else if(dstbpp==15)

  609. 		{

  610. 			asm volatile(

  611. 

  612. FULL_YSCALEYUV2RGB

  613. #ifdef DITHER1XBPP

  614. 			"paddusb b16Dither, %%mm1	\n\t"

  615. 			"paddusb b16Dither, %%mm0	\n\t"

  616. 			"paddusb b16Dither, %%mm3	\n\t"

  617. #endif

  618. 			"punpcklbw %%mm7, %%mm1		\n\t" // 0G0G0G0G

  619. 			"punpcklbw %%mm7, %%mm3		\n\t" // 0B0B0B0B

  620. 			"punpcklbw %%mm7, %%mm0		\n\t" // 0R0R0R0R

  621. 

  622. 			"psrlw $3, %%mm3		\n\t"

  623. 			"psllw $2, %%mm1		\n\t"

  624. 			"psllw $7, %%mm0		\n\t"

  625. 			"pand g15Mask, %%mm1		\n\t"

  626. 			"pand r15Mask, %%mm0		\n\t"

  627. 

  628. 			"por %%mm3, %%mm1		\n\t"

  629. 			"por %%mm1, %%mm0		\n\t"

  630. 

  631. 			MOVNTQ(%%mm0, (%4, %%eax, 2))

  632. 

  633. 			"addl $4, %%eax			\n\t"

  634. 			"cmpl %5, %%eax			\n\t"

  635. 			" jb 1b				\n\t"

  636. 

  637. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  638. 			"m" (yalpha1), "m" (uvalpha1)

  639. 			: "%eax"

  640. 			);

  641. 		}

  642. 		else if(dstbpp==16)

  643. 		{

  644. 			asm volatile(

  645. 

  646. FULL_YSCALEYUV2RGB

  647. #ifdef DITHER1XBPP

  648. 			"paddusb g16Dither, %%mm1	\n\t"

  649. 			"paddusb b16Dither, %%mm0	\n\t"

  650. 			"paddusb b16Dither, %%mm3	\n\t"

  651. #endif

  652. 			"punpcklbw %%mm7, %%mm1		\n\t" // 0G0G0G0G

  653. 			"punpcklbw %%mm7, %%mm3		\n\t" // 0B0B0B0B

  654. 			"punpcklbw %%mm7, %%mm0		\n\t" // 0R0R0R0R

  655. 

  656. 			"psrlw $3, %%mm3		\n\t"

  657. 			"psllw $3, %%mm1		\n\t"

  658. 			"psllw $8, %%mm0		\n\t"

  659. 			"pand g16Mask, %%mm1		\n\t"

  660. 			"pand r16Mask, %%mm0		\n\t"

  661. 

  662. 			"por %%mm3, %%mm1		\n\t"

  663. 			"por %%mm1, %%mm0		\n\t"

  664. 

  665. 			MOVNTQ(%%mm0, (%4, %%eax, 2))

  666. 

  667. 			"addl $4, %%eax			\n\t"

  668. 			"cmpl %5, %%eax			\n\t"

  669. 			" jb 1b				\n\t"

  670. 

  671. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  672. 			"m" (yalpha1), "m" (uvalpha1)

  673. 			: "%eax"

  674. 			);

  675. 		}

  676. #else

  677. 		asm volatile ("\n\t"::: "memory");

  678. 

  679. 		if(dstbpp==32 || dstbpp==24)

  680. 		{

  681. 			int i;

  682. 			for(i=0;i<dstw;i++){

  683. 				// vertical linear interpolation && yuv2rgb in a single step:

  684. 				int Y=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  685. 				int U=((uvbuf0[i]*uvalpha1+uvbuf1[i]*uvalpha)>>19);

  686. 				int V=((uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19);

  687. 				dest[0]=clip_table[((Y + yuvtab_40cf[U]) >>13)];

  688. 				dest[1]=clip_table[((Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13)];

  689. 				dest[2]=clip_table[((Y + yuvtab_3343[V]) >>13)];

  690. 				dest+=dstbpp>>3;

  691. 			}

  692. 		}

  693. 		else if(dstbpp==16)

  694. 		{

  695. 			int i;

  696. 			for(i=0;i<dstw;i++){

  697. 				// vertical linear interpolation && yuv2rgb in a single step:

  698. 				int Y=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  699. 				int U=((uvbuf0[i]*uvalpha1+uvbuf1[i]*uvalpha)>>19);

  700. 				int V=((uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19);

  701. 

  702. 				((uint16_t*)dest)[i] =

  703. 					clip_table16b[(Y + yuvtab_40cf[U]) >>13] |

  704. 					clip_table16g[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13] |

  705. 					clip_table16r[(Y + yuvtab_3343[V]) >>13];

  706. 			}

  707. 		}

  708. 		else if(dstbpp==15)

  709. 		{

  710. 			int i;

  711. 			for(i=0;i<dstw;i++){

  712. 				// vertical linear interpolation && yuv2rgb in a single step:

  713. 				int Y=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  714. 				int U=((uvbuf0[i]*uvalpha1+uvbuf1[i]*uvalpha)>>19);

  715. 				int V=((uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19);

  716. 

  717. 				((uint16_t*)dest)[i] =

  718. 					clip_table15b[(Y + yuvtab_40cf[U]) >>13] |

  719. 					clip_table15g[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13] |

  720. 					clip_table15r[(Y + yuvtab_3343[V]) >>13];

  721. 			}

  722. 		}

  723. #endif

  724. 	}//FULL_UV_IPOL

  725. 	else

  726. 	{

  727. #ifdef HAVE_MMX

  728. 		if(dstbpp == 32)

  729. 		{

  730. 			asm volatile(

  731. 				YSCALEYUV2RGB

  732. 				WRITEBGR32

  733. 

  734. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  735. 			"m" (yalpha1), "m" (uvalpha1)

  736. 			: "%eax"

  737. 			);

  738. 		}

  739. 		else if(dstbpp==24)

  740. 		{

  741. 			asm volatile(

  742. 				YSCALEYUV2RGB

  743. 				WRITEBGR24

  744. 

  745. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  746. 			"m" (yalpha1), "m" (uvalpha1)

  747. 			: "%eax", "%ebx"

  748. 			);

  749. 		}

  750. 		else if(dstbpp==15)

  751. 		{

  752. 			asm volatile(

  753. 				YSCALEYUV2RGB

  754. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

  755. #ifdef DITHER1XBPP

  756. 				"paddusb b16Dither, %%mm2	\n\t"

  757. 				"paddusb b16Dither, %%mm4	\n\t"

  758. 				"paddusb b16Dither, %%mm5	\n\t"

  759. #endif

  760. 

  761. 				WRITEBGR15

  762. 

  763. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  764. 			"m" (yalpha1), "m" (uvalpha1)

  765. 			: "%eax"

  766. 			);

  767. 		}

  768. 		else if(dstbpp==16)

  769. 		{

  770. 			asm volatile(

  771. 				YSCALEYUV2RGB

  772. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

  773. #ifdef DITHER1XBPP

  774. 				"paddusb g16Dither, %%mm2	\n\t"

  775. 				"paddusb b16Dither, %%mm4	\n\t"

  776. 				"paddusb b16Dither, %%mm5	\n\t"

  777. #endif

  778. 

  779. 				WRITEBGR16

  780. 

  781. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  782. 			"m" (yalpha1), "m" (uvalpha1)

  783. 			: "%eax"

  784. 			);

  785. 		}

  786. #else

  787. 		asm volatile ("\n\t"::: "memory");

  788. 

  789. 		if(dstbpp==32)

  790. 		{

  791. 			int i;

  792. 			for(i=0; i<dstw-1; i+=2){

  793. 				// vertical linear interpolation && yuv2rgb in a single step:

  794. 				int Y1=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  795. 				int Y2=yuvtab_2568[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19)];

  796. 				int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  797. 				int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  798. 

  799. 				int Cb= yuvtab_40cf[U];

  800. 				int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  801. 				int Cr= yuvtab_3343[V];

  802. 

  803. 				dest[4*i+0]=clip_table[((Y1 + Cb) >>13)];

  804. 				dest[4*i+1]=clip_table[((Y1 + Cg) >>13)];

  805. 				dest[4*i+2]=clip_table[((Y1 + Cr) >>13)];

  806. 

  807. 				dest[4*i+4]=clip_table[((Y2 + Cb) >>13)];

  808. 				dest[4*i+5]=clip_table[((Y2 + Cg) >>13)];

  809. 				dest[4*i+6]=clip_table[((Y2 + Cr) >>13)];

  810. 			}

  811. 		}

  812. 		if(dstbpp==24)

  813. 		{

  814. 			int i;

  815. 			for(i=0; i<dstw-1; i+=2){

  816. 				// vertical linear interpolation && yuv2rgb in a single step:

  817. 				int Y1=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  818. 				int Y2=yuvtab_2568[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19)];

  819. 				int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  820. 				int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  821. 

  822. 				int Cb= yuvtab_40cf[U];

  823. 				int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  824. 				int Cr= yuvtab_3343[V];

  825. 

  826. 				dest[0]=clip_table[((Y1 + Cb) >>13)];

  827. 				dest[1]=clip_table[((Y1 + Cg) >>13)];

  828. 				dest[2]=clip_table[((Y1 + Cr) >>13)];

  829. 

  830. 				dest[3]=clip_table[((Y2 + Cb) >>13)];

  831. 				dest[4]=clip_table[((Y2 + Cg) >>13)];

  832. 				dest[5]=clip_table[((Y2 + Cr) >>13)];

  833. 				dest+=6;

  834. 			}

  835. 		}

  836. 		else if(dstbpp==16)

  837. 		{

  838. 			int i;

  839. 			for(i=0; i<dstw-1; i+=2){

  840. 				// vertical linear interpolation && yuv2rgb in a single step:

  841. 				int Y1=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  842. 				int Y2=yuvtab_2568[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19)];

  843. 				int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  844. 				int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  845. 

  846. 				int Cb= yuvtab_40cf[U];

  847. 				int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  848. 				int Cr= yuvtab_3343[V];

  849. 

  850. 				((uint16_t*)dest)[i] =

  851. 					clip_table16b[(Y1 + Cb) >>13] |

  852. 					clip_table16g[(Y1 + Cg) >>13] |

  853. 					clip_table16r[(Y1 + Cr) >>13];

  854. 

  855. 				((uint16_t*)dest)[i+1] =

  856. 					clip_table16b[(Y2 + Cb) >>13] |

  857. 					clip_table16g[(Y2 + Cg) >>13] |

  858. 					clip_table16r[(Y2 + Cr) >>13];

  859. 			}

  860. 		}

  861. 		else if(dstbpp==15)

  862. 		{

  863. 			int i;

  864. 			for(i=0; i<dstw-1; i+=2){

  865. 				// vertical linear interpolation && yuv2rgb in a single step:

  866. 				int Y1=yuvtab_2568[((buf0[i]*yalpha1+buf1[i]*yalpha)>>19)];

  867. 				int Y2=yuvtab_2568[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19)];

  868. 				int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  869. 				int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  870. 

  871. 				int Cb= yuvtab_40cf[U];

  872. 				int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  873. 				int Cr= yuvtab_3343[V];

  874. 

  875. 				((uint16_t*)dest)[i] =

  876. 					clip_table15b[(Y1 + Cb) >>13] |

  877. 					clip_table15g[(Y1 + Cg) >>13] |

  878. 					clip_table15r[(Y1 + Cr) >>13];

  879. 

  880. 				((uint16_t*)dest)[i+1] =

  881. 					clip_table15b[(Y2 + Cb) >>13] |

  882. 					clip_table15g[(Y2 + Cg) >>13] |

  883. 					clip_table15r[(Y2 + Cr) >>13];

  884. 			}

  885. 		}

  886. #endif

  887. 	} //!FULL_UV_IPOL

  888. }

  889. 

  890. /**

  891.  * YV12 to RGB without scaling or interpolating

  892.  */

  893. static inline void yuv2rgb1(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, uint16_t *uvbuf1,

  894. 			    uint8_t *dest, int dstw, int yalpha, int uvalpha, int dstbpp)

  895. {

  896. 	int uvalpha1=uvalpha^4095;

  897. #ifdef HAVE_MMX

  898. 	int yalpha1=yalpha^4095;

  899. #endif

  900. 

  901. 	if(fullUVIpol || allwaysIpol)

  902. 	{

  903. 		yuv2rgbX(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);

  904. 		return;

  905. 	}

  906. 	if( yalpha > 2048 ) buf0 = buf1;

  907. 

  908. #ifdef HAVE_MMX

  909. 	if( uvalpha < 2048 ) // note this is not correct (shifts chrominance by 0.5 pixels) but its a bit faster

  910. 	{

  911. 		if(dstbpp == 32)

  912. 		{

  913. 			asm volatile(

  914. 				YSCALEYUV2RGB1

  915. 				WRITEBGR32

  916. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  917. 			"m" (yalpha1), "m" (uvalpha1)

  918. 			: "%eax"

  919. 			);

  920. 		}

  921. 		else if(dstbpp==24)

  922. 		{

  923. 			asm volatile(

  924. 				YSCALEYUV2RGB1

  925. 				WRITEBGR24

  926. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  927. 			"m" (yalpha1), "m" (uvalpha1)

  928. 			: "%eax", "%ebx"

  929. 			);

  930. 		}

  931. 		else if(dstbpp==15)

  932. 		{

  933. 			asm volatile(

  934. 				YSCALEYUV2RGB1

  935. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

  936. #ifdef DITHER1XBPP

  937. 				"paddusb b16Dither, %%mm2	\n\t"

  938. 				"paddusb b16Dither, %%mm4	\n\t"

  939. 				"paddusb b16Dither, %%mm5	\n\t"

  940. #endif

  941. 				WRITEBGR15

  942. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  943. 			"m" (yalpha1), "m" (uvalpha1)

  944. 			: "%eax"

  945. 			);

  946. 		}

  947. 		else if(dstbpp==16)

  948. 		{

  949. 			asm volatile(

  950. 				YSCALEYUV2RGB1

  951. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

  952. #ifdef DITHER1XBPP

  953. 				"paddusb g16Dither, %%mm2	\n\t"

  954. 				"paddusb b16Dither, %%mm4	\n\t"

  955. 				"paddusb b16Dither, %%mm5	\n\t"

  956. #endif

  957. 

  958. 				WRITEBGR16

  959. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  960. 			"m" (yalpha1), "m" (uvalpha1)

  961. 			: "%eax"

  962. 			);

  963. 		}

  964. 	}

  965. 	else

  966. 	{

  967. 		if(dstbpp == 32)

  968. 		{

  969. 			asm volatile(

  970. 				YSCALEYUV2RGB1b

  971. 				WRITEBGR32

  972. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  973. 			"m" (yalpha1), "m" (uvalpha1)

  974. 			: "%eax"

  975. 			);

  976. 		}

  977. 		else if(dstbpp==24)

  978. 		{

  979. 			asm volatile(

  980. 				YSCALEYUV2RGB1b

  981. 				WRITEBGR24

  982. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  983. 			"m" (yalpha1), "m" (uvalpha1)

  984. 			: "%eax", "%ebx"

  985. 			);

  986. 		}

  987. 		else if(dstbpp==15)

  988. 		{

  989. 			asm volatile(

  990. 				YSCALEYUV2RGB1b

  991. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

  992. #ifdef DITHER1XBPP

  993. 				"paddusb b16Dither, %%mm2	\n\t"

  994. 				"paddusb b16Dither, %%mm4	\n\t"

  995. 				"paddusb b16Dither, %%mm5	\n\t"

  996. #endif

  997. 				WRITEBGR15

  998. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  999. 			"m" (yalpha1), "m" (uvalpha1)

  1000. 			: "%eax"

  1001. 			);

  1002. 		}

  1003. 		else if(dstbpp==16)

  1004. 		{

  1005. 			asm volatile(

  1006. 				YSCALEYUV2RGB1b

  1007. 		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

  1008. #ifdef DITHER1XBPP

  1009. 				"paddusb g16Dither, %%mm2	\n\t"

  1010. 				"paddusb b16Dither, %%mm4	\n\t"

  1011. 				"paddusb b16Dither, %%mm5	\n\t"

  1012. #endif

  1013. 

  1014. 				WRITEBGR16

  1015. 			:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),

  1016. 			"m" (yalpha1), "m" (uvalpha1)

  1017. 			: "%eax"

  1018. 			);

  1019. 		}

  1020. 	}

  1021. #else

  1022. //FIXME write 2 versions (for even & odd lines)

  1023. 	asm volatile ("\n\t"::: "memory");

  1024. 

  1025. 	if(dstbpp==32)

  1026. 	{

  1027. 		int i;

  1028. 		for(i=0; i<dstw-1; i+=2){

  1029. 			// vertical linear interpolation && yuv2rgb in a single step:

  1030. 			int Y1=yuvtab_2568[buf0[i]>>7];

  1031. 			int Y2=yuvtab_2568[buf0[i+1]>>7];

  1032. 			int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  1033. 			int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  1034. 

  1035. 			int Cb= yuvtab_40cf[U];

  1036. 			int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  1037. 			int Cr= yuvtab_3343[V];

  1038. 

  1039. 			dest[4*i+0]=clip_table[((Y1 + Cb) >>13)];

  1040. 			dest[4*i+1]=clip_table[((Y1 + Cg) >>13)];

  1041. 			dest[4*i+2]=clip_table[((Y1 + Cr) >>13)];

  1042. 

  1043. 			dest[4*i+4]=clip_table[((Y2 + Cb) >>13)];

  1044. 			dest[4*i+5]=clip_table[((Y2 + Cg) >>13)];

  1045. 			dest[4*i+6]=clip_table[((Y2 + Cr) >>13)];

  1046. 		}

  1047. 	}

  1048. 	if(dstbpp==24)

  1049. 	{

  1050. 		int i;

  1051. 		for(i=0; i<dstw-1; i+=2){

  1052. 			// vertical linear interpolation && yuv2rgb in a single step:

  1053. 			int Y1=yuvtab_2568[buf0[i]>>7];

  1054. 			int Y2=yuvtab_2568[buf0[i+1]>>7];

  1055. 			int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  1056. 			int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  1057. 

  1058. 			int Cb= yuvtab_40cf[U];

  1059. 			int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  1060. 			int Cr= yuvtab_3343[V];

  1061. 

  1062. 			dest[0]=clip_table[((Y1 + Cb) >>13)];

  1063. 			dest[1]=clip_table[((Y1 + Cg) >>13)];

  1064. 			dest[2]=clip_table[((Y1 + Cr) >>13)];

  1065. 

  1066. 			dest[3]=clip_table[((Y2 + Cb) >>13)];

  1067. 			dest[4]=clip_table[((Y2 + Cg) >>13)];

  1068. 			dest[5]=clip_table[((Y2 + Cr) >>13)];

  1069. 			dest+=6;

  1070. 		}

  1071. 	}

  1072. 	else if(dstbpp==16)

  1073. 	{

  1074. 		int i;

  1075. 		for(i=0; i<dstw-1; i+=2){

  1076. 			// vertical linear interpolation && yuv2rgb in a single step:

  1077. 			int Y1=yuvtab_2568[buf0[i]>>7];

  1078. 			int Y2=yuvtab_2568[buf0[i+1]>>7];

  1079. 			int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  1080. 			int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  1081. 

  1082. 			int Cb= yuvtab_40cf[U];

  1083. 			int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  1084. 			int Cr= yuvtab_3343[V];

  1085. 

  1086. 			((uint16_t*)dest)[i] =

  1087. 				clip_table16b[(Y1 + Cb) >>13] |

  1088. 				clip_table16g[(Y1 + Cg) >>13] |

  1089. 				clip_table16r[(Y1 + Cr) >>13];

  1090. 

  1091. 			((uint16_t*)dest)[i+1] =

  1092. 				clip_table16b[(Y2 + Cb) >>13] |

  1093. 				clip_table16g[(Y2 + Cg) >>13] |

  1094. 				clip_table16r[(Y2 + Cr) >>13];

  1095. 		}

  1096. 	}

  1097. 	else if(dstbpp==15)

  1098. 	{

  1099. 		int i;

  1100. 		for(i=0; i<dstw-1; i+=2){

  1101. 			// vertical linear interpolation && yuv2rgb in a single step:

  1102. 			int Y1=yuvtab_2568[buf0[i]>>7];

  1103. 			int Y2=yuvtab_2568[buf0[i+1]>>7];

  1104. 			int U=((uvbuf0[i>>1]*uvalpha1+uvbuf1[i>>1]*uvalpha)>>19);

  1105. 			int V=((uvbuf0[(i>>1)+2048]*uvalpha1+uvbuf1[(i>>1)+2048]*uvalpha)>>19);

  1106. 

  1107. 			int Cb= yuvtab_40cf[U];

  1108. 			int Cg= yuvtab_1a1e[V] + yuvtab_0c92[U];

  1109. 			int Cr= yuvtab_3343[V];

  1110. 

  1111. 			((uint16_t*)dest)[i] =

  1112. 				clip_table15b[(Y1 + Cb) >>13] |

  1113. 				clip_table15g[(Y1 + Cg) >>13] |

  1114. 				clip_table15r[(Y1 + Cr) >>13];

  1115. 

  1116. 			((uint16_t*)dest)[i+1] =

  1117. 				clip_table15b[(Y2 + Cb) >>13] |

  1118. 				clip_table15g[(Y2 + Cg) >>13] |

  1119. 				clip_table15r[(Y2 + Cr) >>13];

  1120. 		}

  1121. 	}

  1122. #endif

  1123. }

  1124. 

  1125. 

  1126. static inline void hyscale(uint16_t *dst, int dstWidth, uint8_t *src, int srcWidth, int xInc)

  1127. {

  1128.       // *** horizontal scale Y line to temp buffer

  1129. #ifdef ARCH_X86

  1130. #ifdef HAVE_MMX2

  1131. 	int i;

  1132. 	if(canMMX2BeUsed)

  1133. 	{

  1134. 		asm volatile(

  1135. 			"pxor %%mm7, %%mm7		\n\t"

  1136. 			"pxor %%mm2, %%mm2		\n\t" // 2*xalpha

  1137. 			"movd %5, %%mm6			\n\t" // xInc&0xFFFF

  1138. 			"punpcklwd %%mm6, %%mm6		\n\t"

  1139. 			"punpcklwd %%mm6, %%mm6		\n\t"

  1140. 			"movq %%mm6, %%mm2		\n\t"

  1141. 			"psllq $16, %%mm2		\n\t"

  1142. 			"paddw %%mm6, %%mm2		\n\t"

  1143. 			"psllq $16, %%mm2		\n\t"

  1144. 			"paddw %%mm6, %%mm2		\n\t"

  1145. 			"psllq $16, %%mm2		\n\t" //0,t,2t,3t		t=xInc&0xFF

  1146. 			"movq %%mm2, temp0		\n\t"

  1147. 			"movd %4, %%mm6			\n\t" //(xInc*4)&0xFFFF

  1148. 			"punpcklwd %%mm6, %%mm6		\n\t"

  1149. 			"punpcklwd %%mm6, %%mm6		\n\t"

  1150. 			"xorl %%eax, %%eax		\n\t" // i

  1151. 			"movl %0, %%esi			\n\t" // src

  1152. 			"movl %1, %%edi			\n\t" // buf1

  1153. 			"movl %3, %%edx			\n\t" // (xInc*4)>>16

  1154. 			"xorl %%ecx, %%ecx		\n\t"

  1155. 			"xorl %%ebx, %%ebx		\n\t"

  1156. 			"movw %4, %%bx			\n\t" // (xInc*4)&0xFFFF

  1157. 

  1158. #define FUNNY_Y_CODE \

  1159. 			PREFETCH" 1024(%%esi)		\n\t"\

  1160. 			PREFETCH" 1056(%%esi)		\n\t"\

  1161. 			PREFETCH" 1088(%%esi)		\n\t"\

  1162. 			"call funnyYCode		\n\t"\

  1163. 			"movq temp0, %%mm2		\n\t"\

  1164. 			"xorl %%ecx, %%ecx		\n\t"

  1165. 

  1166. FUNNY_Y_CODE

  1167. FUNNY_Y_CODE

  1168. FUNNY_Y_CODE

  1169. FUNNY_Y_CODE

  1170. FUNNY_Y_CODE

  1171. FUNNY_Y_CODE

  1172. FUNNY_Y_CODE

  1173. FUNNY_Y_CODE

  1174. 

  1175. 			:: "m" (src), "m" (dst), "m" (dstWidth), "m" ((xInc*4)>>16),

  1176. 			"m" ((xInc*4)&0xFFFF), "m" (xInc&0xFFFF)

  1177. 			: "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"

  1178. 		);

  1179. 		for(i=dstWidth-1; (i*xInc)>>16 >=srcWidth-1; i--) dst[i] = src[srcWidth-1]*128;

  1180. 	}

  1181. 	else

  1182. 	{

  1183. #endif

  1184. 	//NO MMX just normal asm ...

  1185. 	asm volatile(

  1186. 		"xorl %%eax, %%eax		\n\t" // i

  1187. 		"xorl %%ebx, %%ebx		\n\t" // xx

  1188. 		"xorl %%ecx, %%ecx		\n\t" // 2*xalpha

  1189. 		"1:				\n\t"

  1190. 		"movzbl  (%0, %%ebx), %%edi	\n\t" //src[xx]

  1191. 		"movzbl 1(%0, %%ebx), %%esi	\n\t" //src[xx+1]

  1192. 		"subl %%edi, %%esi		\n\t" //src[xx+1] - src[xx]

  1193. 		"imull %%ecx, %%esi		\n\t" //(src[xx+1] - src[xx])*2*xalpha

  1194. 		"shll $16, %%edi		\n\t"

  1195. 		"addl %%edi, %%esi		\n\t" //src[xx+1]*2*xalpha + src[xx]*(1-2*xalpha)

  1196. 		"movl %1, %%edi			\n\t"

  1197. 		"shrl $9, %%esi			\n\t"

  1198. 		"movw %%si, (%%edi, %%eax, 2)	\n\t"

  1199. 		"addw %4, %%cx			\n\t" //2*xalpha += xInc&0xFF

  1200. 		"adcl %3, %%ebx			\n\t" //xx+= xInc>>8 + carry

  1201. 

  1202. 		"movzbl (%0, %%ebx), %%edi	\n\t" //src[xx]

  1203. 		"movzbl 1(%0, %%ebx), %%esi	\n\t" //src[xx+1]

  1204. 		"subl %%edi, %%esi		\n\t" //src[xx+1] - src[xx]

  1205. 		"imull %%ecx, %%esi		\n\t" //(src[xx+1] - src[xx])*2*xalpha

  1206. 		"shll $16, %%edi		\n\t"

  1207. 		"addl %%edi, %%esi		\n\t" //src[xx+1]*2*xalpha + src[xx]*(1-2*xalpha)

  1208. 		"movl %1, %%edi			\n\t"

  1209. 		"shrl $9, %%esi			\n\t"

  1210. 		"movw %%si, 2(%%edi, %%eax, 2)	\n\t"

  1211. 		"addw %4, %%cx			\n\t" //2*xalpha += xInc&0xFF

  1212. 		"adcl %3, %%ebx			\n\t" //xx+= xInc>>8 + carry

  1213. 

  1214. 

  1215. 		"addl $2, %%eax			\n\t"

  1216. 		"cmpl %2, %%eax			\n\t"

  1217. 		" jb 1b				\n\t"

  1218. 

  1219. 

  1220. 		:: "r" (src), "m" (dst), "m" (dstWidth), "m" (xInc>>16), "m" (xInc&0xFFFF)

  1221. 		: "%eax", "%ebx", "%ecx", "%edi", "%esi"

  1222. 		);

  1223. #ifdef HAVE_MMX2

  1224. 	} //if MMX2 cant be used

  1225. #endif

  1226. #else

  1227. 	int i;

  1228. 	unsigned int xpos=0;

  1229. 	for(i=0;i<dstWidth;i++)

  1230. 	{

  1231. 		register unsigned int xx=xpos>>16;

  1232. 		register unsigned int xalpha=(xpos&0xFFFF)>>9;

  1233. 		dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha;

  1234. 		xpos+=xInc;

  1235. 	}

  1236. #endif

  1237. }

  1238. 

  1239. inline static void hcscale(uint16_t *dst, int dstWidth,

  1240. 				uint8_t *src1, uint8_t *src2, int srcWidth, int xInc)

  1241. {

  1242. #ifdef ARCH_X86

  1243. #ifdef HAVE_MMX2

  1244. 	int i;

  1245. 	if(canMMX2BeUsed)

  1246. 	{

  1247. 		asm volatile(

  1248. 		"pxor %%mm7, %%mm7		\n\t"

  1249. 		"pxor %%mm2, %%mm2		\n\t" // 2*xalpha

  1250. 		"movd %5, %%mm6			\n\t" // xInc&0xFFFF

  1251. 		"punpcklwd %%mm6, %%mm6		\n\t"

  1252. 		"punpcklwd %%mm6, %%mm6		\n\t"

  1253. 		"movq %%mm6, %%mm2		\n\t"

  1254. 		"psllq $16, %%mm2		\n\t"

  1255. 		"paddw %%mm6, %%mm2		\n\t"

  1256. 		"psllq $16, %%mm2		\n\t"

  1257. 		"paddw %%mm6, %%mm2		\n\t"

  1258. 		"psllq $16, %%mm2		\n\t" //0,t,2t,3t		t=xInc&0xFFFF

  1259. 		"movq %%mm2, temp0		\n\t"

  1260. 		"movd %4, %%mm6			\n\t" //(xInc*4)&0xFFFF

  1261. 		"punpcklwd %%mm6, %%mm6		\n\t"

  1262. 		"punpcklwd %%mm6, %%mm6		\n\t"

  1263. 		"xorl %%eax, %%eax		\n\t" // i

  1264. 		"movl %0, %%esi			\n\t" // src

  1265. 		"movl %1, %%edi			\n\t" // buf1

  1266. 		"movl %3, %%edx			\n\t" // (xInc*4)>>16

  1267. 		"xorl %%ecx, %%ecx		\n\t"

  1268. 		"xorl %%ebx, %%ebx		\n\t"

  1269. 		"movw %4, %%bx			\n\t" // (xInc*4)&0xFFFF

  1270. 

  1271. #define FUNNYUVCODE \

  1272. 			PREFETCH" 1024(%%esi)		\n\t"\

  1273. 			PREFETCH" 1056(%%esi)		\n\t"\

  1274. 			PREFETCH" 1088(%%esi)		\n\t"\

  1275. 			"call funnyUVCode		\n\t"\

  1276. 			"movq temp0, %%mm2		\n\t"\

  1277. 			"xorl %%ecx, %%ecx		\n\t"

  1278. 

  1279. FUNNYUVCODE

  1280. FUNNYUVCODE

  1281. FUNNYUVCODE

  1282. FUNNYUVCODE

  1283. 

  1284. FUNNYUVCODE

  1285. FUNNYUVCODE

  1286. FUNNYUVCODE

  1287. FUNNYUVCODE

  1288. 		"xorl %%eax, %%eax		\n\t" // i

  1289. 		"movl %6, %%esi			\n\t" // src

  1290. 		"movl %1, %%edi			\n\t" // buf1

  1291. 		"addl $4096, %%edi		\n\t"

  1292. 

  1293. FUNNYUVCODE

  1294. FUNNYUVCODE

  1295. FUNNYUVCODE

  1296. FUNNYUVCODE

  1297. 

  1298. FUNNYUVCODE

  1299. FUNNYUVCODE

  1300. FUNNYUVCODE

  1301. FUNNYUVCODE

  1302. 

  1303. 		:: "m" (src1), "m" (dst), "m" (dstWidth), "m" ((xInc*4)>>16),

  1304. 		  "m" ((xInc*4)&0xFFFF), "m" (xInc&0xFFFF), "m" (src2)

  1305. 		: "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"

  1306. 	);

  1307. 		for(i=dstWidth-1; (i*xInc)>>16 >=srcWidth/2-1; i--)

  1308. 		{

  1309. 			dst[i] = src1[srcWidth/2-1]*128;

  1310. 			dst[i+2048] = src2[srcWidth/2-1]*128;

  1311. 		}

  1312. 	}

  1313. 	else

  1314. 	{

  1315. #endif

  1316. 	asm volatile(

  1317. 		"xorl %%eax, %%eax		\n\t" // i

  1318. 		"xorl %%ebx, %%ebx		\n\t" // xx

  1319. 		"xorl %%ecx, %%ecx		\n\t" // 2*xalpha

  1320. 		"1:				\n\t"

  1321. 		"movl %0, %%esi			\n\t"

  1322. 		"movzbl  (%%esi, %%ebx), %%edi	\n\t" //src[xx]

  1323. 		"movzbl 1(%%esi, %%ebx), %%esi	\n\t" //src[xx+1]

  1324. 		"subl %%edi, %%esi		\n\t" //src[xx+1] - src[xx]

  1325. 		"imull %%ecx, %%esi		\n\t" //(src[xx+1] - src[xx])*2*xalpha

  1326. 		"shll $16, %%edi		\n\t"

  1327. 		"addl %%edi, %%esi		\n\t" //src[xx+1]*2*xalpha + src[xx]*(1-2*xalpha)

  1328. 		"movl %1, %%edi			\n\t"

  1329. 		"shrl $9, %%esi			\n\t"

  1330. 		"movw %%si, (%%edi, %%eax, 2)	\n\t"

  1331. 

  1332. 		"movzbl  (%5, %%ebx), %%edi	\n\t" //src[xx]

  1333. 		"movzbl 1(%5, %%ebx), %%esi	\n\t" //src[xx+1]

  1334. 		"subl %%edi, %%esi		\n\t" //src[xx+1] - src[xx]

  1335. 		"imull %%ecx, %%esi		\n\t" //(src[xx+1] - src[xx])*2*xalpha

  1336. 		"shll $16, %%edi		\n\t"

  1337. 		"addl %%edi, %%esi		\n\t" //src[xx+1]*2*xalpha + src[xx]*(1-2*xalpha)

  1338. 		"movl %1, %%edi			\n\t"

  1339. 		"shrl $9, %%esi			\n\t"

  1340. 		"movw %%si, 4096(%%edi, %%eax, 2)\n\t"

  1341. 

  1342. 		"addw %4, %%cx			\n\t" //2*xalpha += xInc&0xFF

  1343. 		"adcl %3, %%ebx			\n\t" //xx+= xInc>>8 + carry

  1344. 		"addl $1, %%eax			\n\t"

  1345. 		"cmpl %2, %%eax			\n\t"

  1346. 		" jb 1b				\n\t"

  1347. 

  1348. 		:: "m" (src1), "m" (dst), "m" (dstWidth), "m" (xInc>>16), "m" (xInc&0xFFFF),

  1349. 		"r" (src2)

  1350. 		: "%eax", "%ebx", "%ecx", "%edi", "%esi"

  1351. 		);

  1352. #ifdef HAVE_MMX2

  1353. 	} //if MMX2 cant be used

  1354. #endif

  1355. #else

  1356. 	int i;

  1357. 	unsigned int xpos=0;

  1358. 	for(i=0;i<dstWidth;i++)

  1359. 	{

  1360. 		register unsigned int xx=xpos>>16;

  1361. 		register unsigned int xalpha=(xpos&0xFFFF)>>9;

  1362. 		dst[i]=(src1[xx]*(xalpha^127)+src1[xx+1]*xalpha);

  1363. 		dst[i+2048]=(src2[xx]*(xalpha^127)+src2[xx+1]*xalpha);

  1364. /* slower

  1365. 	  dst[i]= (src1[xx]<<7) + (src1[xx+1] - src1[xx])*xalpha;

  1366. 	  dst[i+2048]=(src2[xx]<<7) + (src2[xx+1] - src2[xx])*xalpha;

  1367. */

  1368. 		xpos+=xInc;

  1369. 	}

  1370. #endif

  1371. }

  1372. 

  1373. 

  1374. // *** bilinear scaling and yuv->rgb or yuv->yuv conversion of yv12 slices:

  1375. // *** Note: it's called multiple times while decoding a frame, first time y==0

  1376. // *** Designed to upscale, but may work for downscale too.

  1377. // s_xinc = (src_width << 16) / dst_width

  1378. // s_yinc = (src_height << 16) / dst_height

  1379. void SwScale_YV12slice(unsigned char* srcptr[],int stride[], int y, int h,

  1380. 			     uint8_t* dstptr[], int dststride, int dstw, int dstbpp,

  1381. 			     unsigned int s_xinc,unsigned int s_yinc){

  1382. 

  1383. // scaling factors:

  1384. //static int s_yinc=(vo_dga_src_height<<16)/vo_dga_vp_height;

  1385. //static int s_xinc=(vo_dga_src_width<<8)/vo_dga_vp_width;

  1386. 

  1387. unsigned int s_xinc2;

  1388. 

  1389. static int s_srcypos; // points to the dst Pixels center in the source (0 is the center of pixel 0,0 in src)

  1390. static int s_ypos;

  1391. 

  1392. // last horzontally interpolated lines, used to avoid unnecessary calculations

  1393. static int s_last_ypos;

  1394. static int s_last_y1pos;

  1395. 

  1396. #ifdef HAVE_MMX2

  1397. // used to detect a horizontal size change

  1398. static int old_dstw= -1;

  1399. static int old_s_xinc= -1;

  1400. #endif

  1401. 

  1402. int srcWidth= (dstw*s_xinc + 0x8000)>>16;

  1403. int dstUVw= fullUVIpol ? dstw : dstw/2;

  1404. int i;

  1405. 

  1406. #ifdef HAVE_MMX2

  1407. canMMX2BeUsed= (s_xinc <= 0x10000 && (dstw&31)==0 && (srcWidth&15)==0) ? 1 : 0;

  1408. #endif

  1409. 

  1410. // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  1411. // n-2 is the last chrominance sample available

  1412. // FIXME this is not perfect, but noone shuld notice the difference, the more correct variant

  1413. // would be like the vertical one, but that would require some special code for the

  1414. // first and last pixel

  1415. if(canMMX2BeUsed) 	s_xinc+= 20;

  1416. else			s_xinc = ((srcWidth-2)<<16)/(dstw-2) - 20;

  1417. 

  1418. if(fullUVIpol && !(dstbpp==12)) 	s_xinc2= s_xinc>>1;

  1419. else					s_xinc2= s_xinc;

  1420.   // force calculation of the horizontal interpolation of the first line

  1421. 

  1422.   if(y==0){

  1423. 	s_last_ypos=-99;

  1424. 	s_last_y1pos=-99;

  1425. 	s_srcypos= s_yinc/2 - 0x8000;

  1426. 	s_ypos=0;

  1427. 

  1428. 	// clean the buffers so that no green stuff is drawen if the width is not sane (%8=0)

  1429. 	for(i=dstw-2; i<dstw+20; i++)

  1430. 	{

  1431. 		pix_buf_uv[0][i] = pix_buf_uv[1][i]

  1432. 		= pix_buf_uv[0][2048+i] = pix_buf_uv[1][2048+i] = 128;

  1433. 		pix_buf_uv[0][i/2] = pix_buf_uv[1][i/2]

  1434. 		= pix_buf_uv[0][2048+i/2] = pix_buf_uv[1][2048+i/2] = 128;

  1435. 		pix_buf_y[0][i]= pix_buf_y[1][i]= 0;

  1436. 	}

  1437. 

  1438. #ifdef HAVE_MMX2

  1439. // cant downscale !!!

  1440. 	if((old_s_xinc != s_xinc || old_dstw!=dstw) && canMMX2BeUsed)

  1441. 	{

  1442. 		uint8_t *fragment;

  1443. 		int imm8OfPShufW1;

  1444. 		int imm8OfPShufW2;

  1445. 		int fragmentLength;

  1446. 

  1447. 		int xpos, i;

  1448. 

  1449. 		old_s_xinc= s_xinc;

  1450. 		old_dstw= dstw;

  1451. 

  1452. 		// create an optimized horizontal scaling routine

  1453. 

  1454. 		//code fragment

  1455. 

  1456. 		asm volatile(

  1457. 			"jmp 9f				\n\t"

  1458. 		// Begin

  1459. 			"0:				\n\t"

  1460. 			"movq (%%esi), %%mm0		\n\t" //FIXME Alignment

  1461. 			"movq %%mm0, %%mm1		\n\t"

  1462. 			"psrlq $8, %%mm0		\n\t"

  1463. 			"punpcklbw %%mm7, %%mm1	\n\t"

  1464. 			"movq %%mm2, %%mm3		\n\t"

  1465. 			"punpcklbw %%mm7, %%mm0	\n\t"

  1466. 			"addw %%bx, %%cx		\n\t" //2*xalpha += (4*s_xinc)&0xFFFF

  1467. 			"pshufw $0xFF, %%mm1, %%mm1	\n\t"

  1468. 			"1:				\n\t"

  1469. 			"adcl %%edx, %%esi		\n\t" //xx+= (4*s_xinc)>>16 + carry

  1470. 			"pshufw $0xFF, %%mm0, %%mm0	\n\t"

  1471. 			"2:				\n\t"

  1472. 			"psrlw $9, %%mm3		\n\t"

  1473. 			"psubw %%mm1, %%mm0		\n\t"

  1474. 			"pmullw %%mm3, %%mm0		\n\t"

  1475. 			"paddw %%mm6, %%mm2		\n\t" // 2*alpha += xpos&0xFFFF

  1476. 			"psllw $7, %%mm1		\n\t"

  1477. 			"paddw %%mm1, %%mm0		\n\t"

  1478. 

  1479. 			"movq %%mm0, (%%edi, %%eax)	\n\t"

  1480. 

  1481. 			"addl $8, %%eax			\n\t"

  1482. 		// End

  1483. 			"9:				\n\t"

  1484. //		"int $3\n\t"

  1485. 			"leal 0b, %0			\n\t"

  1486. 			"leal 1b, %1			\n\t"

  1487. 			"leal 2b, %2			\n\t"

  1488. 			"decl %1			\n\t"

  1489. 			"decl %2			\n\t"

  1490. 			"subl %0, %1			\n\t"

  1491. 			"subl %0, %2			\n\t"

  1492. 			"leal 9b, %3			\n\t"

  1493. 			"subl %0, %3			\n\t"

  1494. 			:"=r" (fragment), "=r" (imm8OfPShufW1), "=r" (imm8OfPShufW2),

  1495. 			 "=r" (fragmentLength)

  1496. 		);

  1497. 

  1498. 		xpos= 0; //s_xinc/2 - 0x8000; // difference between pixel centers

  1499. 

  1500. 		/* choose xinc so that all 8 parts fit exactly

  1501. 		   Note: we cannot use just 1 part because it would not fit in the code cache */

  1502. //		s_xinc2_diff= -((((s_xinc2*(dstw/8))&0xFFFF))/(dstw/8))-10;

  1503. //		s_xinc_diff= -((((s_xinc*(dstw/8))&0xFFFF))/(dstw/8));

  1504. #ifdef ALT_ERROR

  1505. //		s_xinc2_diff+= ((0x10000/(dstw/8)));

  1506. #endif

  1507. //		s_xinc_diff= s_xinc2_diff*2;

  1508. 

  1509. //		s_xinc2+= s_xinc2_diff;

  1510. //		s_xinc+= s_xinc_diff;

  1511. 

  1512. //		old_s_xinc= s_xinc;

  1513. 

  1514. 		for(i=0; i<dstw/8; i++)

  1515. 		{

  1516. 			int xx=xpos>>16;

  1517. 

  1518. 			if((i&3) == 0)

  1519. 			{

  1520. 				int a=0;

  1521. 				int b=((xpos+s_xinc)>>16) - xx;

  1522. 				int c=((xpos+s_xinc*2)>>16) - xx;

  1523. 				int d=((xpos+s_xinc*3)>>16) - xx;

  1524. 

  1525. 				memcpy(funnyYCode + fragmentLength*i/4, fragment, fragmentLength);

  1526. 

  1527. 				funnyYCode[fragmentLength*i/4 + imm8OfPShufW1]=

  1528. 				funnyYCode[fragmentLength*i/4 + imm8OfPShufW2]=

  1529. 					a | (b<<2) | (c<<4) | (d<<6);

  1530. 

  1531. 				// if we dont need to read 8 bytes than dont :), reduces the chance of

  1532. 				// crossing a cache line

  1533. 				if(d<3) funnyYCode[fragmentLength*i/4 + 1]= 0x6E;

  1534. 

  1535. 				funnyYCode[fragmentLength*(i+4)/4]= RET;

  1536. 			}

  1537. 			xpos+=s_xinc;

  1538. 		}

  1539. 

  1540. 		xpos= 0; //s_xinc2/2 - 0x10000; // difference between centers of chrom samples

  1541. 		for(i=0; i<dstUVw/8; i++)

  1542. 		{

  1543. 			int xx=xpos>>16;

  1544. 

  1545. 			if((i&3) == 0)

  1546. 			{

  1547. 				int a=0;

  1548. 				int b=((xpos+s_xinc2)>>16) - xx;

  1549. 				int c=((xpos+s_xinc2*2)>>16) - xx;

  1550. 				int d=((xpos+s_xinc2*3)>>16) - xx;

  1551. 

  1552. 				memcpy(funnyUVCode + fragmentLength*i/4, fragment, fragmentLength);

  1553. 

  1554. 				funnyUVCode[fragmentLength*i/4 + imm8OfPShufW1]=

  1555. 				funnyUVCode[fragmentLength*i/4 + imm8OfPShufW2]=

  1556. 					a | (b<<2) | (c<<4) | (d<<6);

  1557. 

  1558. 				// if we dont need to read 8 bytes than dont :), reduces the chance of

  1559. 				// crossing a cache line

  1560. 				if(d<3) funnyUVCode[fragmentLength*i/4 + 1]= 0x6E;

  1561. 

  1562. 				funnyUVCode[fragmentLength*(i+4)/4]= RET;

  1563. 			}

  1564. 			xpos+=s_xinc2;

  1565. 		}

  1566. //		funnyCode[0]= RET;

  1567. 	}

  1568. 

  1569. #endif // HAVE_MMX2

  1570.   } // reset counters

  1571. 

  1572.   while(1){

  1573.     unsigned char *dest =dstptr[0]+dststride*s_ypos;

  1574.     unsigned char *uDest=dstptr[1]+(dststride>>1)*(s_ypos>>1);

  1575.     unsigned char *vDest=dstptr[2]+(dststride>>1)*(s_ypos>>1);

  1576. 

  1577.     int y0=(s_srcypos + 0xFFFF)>>16;  // first luminance source line number below the dst line

  1578. 	// points to the dst Pixels center in the source (0 is the center of pixel 0,0 in src)

  1579.     int srcuvpos= dstbpp==12 ?	s_srcypos + s_yinc/2 - 0x8000 :

  1580.     				s_srcypos - 0x8000;

  1581.     int y1=(srcuvpos + 0x1FFFF)>>17; // first chrominance source line number below the dst line

  1582.     int yalpha=((s_srcypos-1)&0xFFFF)>>4;

  1583.     int uvalpha=((srcuvpos-1)&0x1FFFF)>>5;

  1584.     uint16_t *buf0=pix_buf_y[y0&1];		// top line of the interpolated slice

  1585.     uint16_t *buf1=pix_buf_y[((y0+1)&1)];	// bottom line of the interpolated slice

  1586.     uint16_t *uvbuf0=pix_buf_uv[y1&1];		// top line of the interpolated slice

  1587.     uint16_t *uvbuf1=pix_buf_uv[(y1+1)&1];	// bottom line of the interpolated slice

  1588. 

  1589.     if(y0>=y+h) break; // FIXME wrong, skips last lines, but they are dupliactes anyway

  1590. 

  1591.     if((y0&1) && dstbpp==12) uvalpha=-1; // there is no alpha if there is no line

  1592. 

  1593.     s_ypos++; s_srcypos+=s_yinc;

  1594. 

  1595.     //only interpolate the src line horizontally if we didnt do it allready

  1596. 	if(s_last_ypos!=y0)

  1597. 	{

  1598. 		unsigned char *src;

  1599. 		// skip if first line has been horiz scaled alleady

  1600. 		if(s_last_ypos != y0-1)

  1601. 		{

  1602. 			// check if first line is before any available src lines

  1603. 			if(y0-1 < y) 	src=srcptr[0]+(0     )*stride[0];

  1604. 			else		src=srcptr[0]+(y0-y-1)*stride[0];

  1605. 

  1606. 			hyscale(buf0, dstw, src, srcWidth, s_xinc);

  1607. 		}

  1608. 		// check if second line is after any available src lines

  1609. 		if(y0-y >= h)	src=srcptr[0]+(h-1)*stride[0];

  1610. 		else		src=srcptr[0]+(y0-y)*stride[0];

  1611. 

  1612. 		// the min() is required to avoid reuseing lines which where not available

  1613. 		s_last_ypos= MIN(y0, y+h-1);

  1614. 		hyscale(buf1, dstw, src, srcWidth, s_xinc);

  1615. 	}

  1616. //	printf("%d %d %d %d\n", y, y1, s_last_y1pos, h);

  1617.       // *** horizontal scale U and V lines to temp buffer

  1618. 	if(s_last_y1pos!=y1)

  1619. 	{

  1620. 		uint8_t *src1, *src2;

  1621. 		// skip if first line has been horiz scaled alleady

  1622. 		if(s_last_y1pos != y1-1)

  1623. 		{

  1624. 			// check if first line is before any available src lines

  1625. 			if(y1-y/2-1 < 0)

  1626. 			{

  1627. 				src1= srcptr[1]+(0)*stride[1];

  1628. 				src2= srcptr[2]+(0)*stride[2];

  1629. 			}else{

  1630. 				src1= srcptr[1]+(y1-y/2-1)*stride[1];

  1631. 				src2= srcptr[2]+(y1-y/2-1)*stride[2];

  1632. 			}

  1633. 			hcscale(uvbuf0, dstUVw, src1, src2, srcWidth, s_xinc2);

  1634. 		}

  1635. 

  1636. 		// check if second line is after any available src lines

  1637. 		if(y1 - y/2 >= h/2)

  1638. 		{

  1639. 			src1= srcptr[1]+(h/2-1)*stride[1];

  1640. 			src2= srcptr[2]+(h/2-1)*stride[2];

  1641. 		}else{

  1642. 			src1= srcptr[1]+(y1-y/2)*stride[1];

  1643. 			src2= srcptr[2]+(y1-y/2)*stride[2];

  1644. 		}

  1645. 		hcscale(uvbuf1, dstUVw, src1, src2, srcWidth, s_xinc2);

  1646. 

  1647. 		// the min() is required to avoid reuseing lines which where not available

  1648. 		s_last_y1pos= MIN(y1, y/2+h/2-1);

  1649. 	}

  1650. 

  1651. 	if(dstbpp==12) //YV12

  1652. 		yuv2yuv(buf0, buf1, uvbuf0, uvbuf1, dest, uDest, vDest, dstw, yalpha, uvalpha);

  1653. 	else if(ABS(s_yinc - 0x10000) < 10)

  1654. 		yuv2rgb1(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);

  1655. 	else

  1656. 		yuv2rgbX(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);

  1657. 

  1658. #ifdef HAVE_MMX

  1659.     	b16Dither= b16Dither1;

  1660. 	b16Dither1= b16Dither2;

  1661. 	b16Dither2= b16Dither;

  1662. 

  1663. 	g16Dither= g16Dither1;

  1664. 	g16Dither1= g16Dither2;

  1665. 	g16Dither2= g16Dither;

  1666. #endif

  1667.   }

  1668. 

  1669. #ifdef HAVE_MMX

  1670. 	__asm __volatile(SFENCE:::"memory");

  1671. 	__asm __volatile(EMMS:::"memory");

  1672. #endif

  1673. }

  1674. 

  1675. 

  1676. void SwScale_Init(){

  1677.     // generating tables:

  1678.     int i;

  1679.     for(i=0;i<256;i++){

  1680.         clip_table[i]=0;

  1681.         clip_table[i+256]=i;

  1682.         clip_table[i+512]=255;

  1683. 	yuvtab_2568[i]=(0x2568*(i-16))+(256<<13);

  1684. 	yuvtab_3343[i]=0x3343*(i-128);

  1685. 	yuvtab_0c92[i]=-0x0c92*(i-128);

  1686. 	yuvtab_1a1e[i]=-0x1a1e*(i-128);

  1687. 	yuvtab_40cf[i]=0x40cf*(i-128);

  1688.     }

  1689. 

  1690.     for(i=0; i<768; i++)

  1691.     {

  1692.     	int v= clip_table[i];

  1693. 	clip_table16b[i]= v>>3;

  1694. 	clip_table16g[i]= (v<<3)&0x07E0;

  1695. 	clip_table16r[i]= (v<<8)&0xF800;

  1696. 	clip_table15b[i]= v>>3;

  1697. 	clip_table15g[i]= (v<<2)&0x03E0;

  1698. 	clip_table15r[i]= (v<<7)&0x7C00;

  1699.     }

  1700. 

  1701. }