Rename yuv2rgb_template2.c --> yuv2rgb_template.c now that the other is gone.
[ffmpeg.git] / libswscale / x86 / yuv2rgb_template.c
1 /*
2  * software YUV to RGB converter
3  *
4  * Copyright (C) 2001-2007 Michael Niedermayer
5  *           (c) 2010 Konstantin Shishkov
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23
24 #undef MOVNTQ
25 #undef EMMS
26 #undef SFENCE
27
28 #if HAVE_AMD3DNOW
29 /* On K6 femms is faster than emms. On K7 femms is directly mapped to emms. */
30 #define EMMS   "femms"
31 #else
32 #define EMMS   "emms"
33 #endif
34
35 #if HAVE_MMX2
36 #define MOVNTQ "movntq"
37 #define SFENCE "sfence"
38 #else
39 #define MOVNTQ "movq"
40 #define SFENCE " # nop"
41 #endif
42
43 #define REG_BLUE  "0"
44 #define REG_RED   "1"
45 #define REG_GREEN "2"
46 #define REG_ALPHA "3"
47
48 #define YUV2RGB_LOOP(depth)                                          \
49     h_size = (c->dstW + 7) & ~7;                                     \
50     if (h_size * depth > FFABS(dstStride[0]))                        \
51         h_size -= 8;                                                 \
52                                                                      \
53     if (c->srcFormat == PIX_FMT_YUV422P) {                           \
54         srcStride[1] *= 2;                                           \
55         srcStride[2] *= 2;                                           \
56     }                                                                \
57                                                                      \
58     __asm__ volatile ("pxor %mm4, %mm4\n\t");                        \
59     for (y = 0; y < srcSliceH; y++) {                                \
60         uint8_t *image    = dst[0] + (y + srcSliceY) * dstStride[0]; \
61         const uint8_t *py = src[0] +               y * srcStride[0]; \
62         const uint8_t *pu = src[1] +        (y >> 1) * srcStride[1]; \
63         const uint8_t *pv = src[2] +        (y >> 1) * srcStride[2]; \
64         x86_reg index = -h_size / 2;                                 \
65
66 #define YUV2RGB_INITIAL_LOAD          \
67     __asm__ volatile (                \
68         "movq (%5, %0, 2), %%mm6\n\t" \
69         "movd    (%2, %0), %%mm0\n\t" \
70         "movd    (%3, %0), %%mm1\n\t" \
71         "1: \n\t"                     \
72
73 /* YUV2RGB core
74  * Conversion is performed in usual way:
75  * R = Y' * Ycoef + Vred * V'
76  * G = Y' * Ycoef + Vgreen * V' + Ugreen * U'
77  * B = Y' * Ycoef               + Ublue * U'
78  *
79  * where X' = X * 8 - Xoffset (multiplication is performed to increase
80  * precision a bit).
81  * Since it operates in YUV420 colorspace, Y component is additionally
82  * split into Y1 and Y2 for even and odd pixels.
83  *
84  * Input:
85  * mm0 - U (4 elems), mm1 - V (4 elems), mm6 - Y (8 elems), mm4 - zero register
86  * Output:
87  * mm1 - R, mm2 - G, mm0 - B
88  */
89 #define YUV2RGB                                  \
90     /* convert Y, U, V into Y1', Y2', U', V' */  \
91     "movq      %%mm6, %%mm7\n\t"                 \
92     "punpcklbw %%mm4, %%mm0\n\t"                 \
93     "punpcklbw %%mm4, %%mm1\n\t"                 \
94     "pand     "MANGLE(mmx_00ffw)", %%mm6\n\t"    \
95     "psrlw     $8,    %%mm7\n\t"                 \
96     "psllw     $3,    %%mm0\n\t"                 \
97     "psllw     $3,    %%mm1\n\t"                 \
98     "psllw     $3,    %%mm6\n\t"                 \
99     "psllw     $3,    %%mm7\n\t"                 \
100     "psubsw   "U_OFFSET"(%4), %%mm0\n\t"         \
101     "psubsw   "V_OFFSET"(%4), %%mm1\n\t"         \
102     "psubw    "Y_OFFSET"(%4), %%mm6\n\t"         \
103     "psubw    "Y_OFFSET"(%4), %%mm7\n\t"         \
104 \
105      /* multiply by coefficients */              \
106     "movq      %%mm0, %%mm2\n\t"                 \
107     "movq      %%mm1, %%mm3\n\t"                 \
108     "pmulhw   "UG_COEFF"(%4), %%mm2\n\t"         \
109     "pmulhw   "VG_COEFF"(%4), %%mm3\n\t"         \
110     "pmulhw   "Y_COEFF" (%4), %%mm6\n\t"         \
111     "pmulhw   "Y_COEFF" (%4), %%mm7\n\t"         \
112     "pmulhw   "UB_COEFF"(%4), %%mm0\n\t"         \
113     "pmulhw   "VR_COEFF"(%4), %%mm1\n\t"         \
114     "paddsw    %%mm3, %%mm2\n\t"                 \
115     /* now: mm0 = UB, mm1 = VR, mm2 = CG */      \
116     /*      mm6 = Y1, mm7 = Y2 */                \
117 \
118     /* produce RGB */                            \
119     "movq      %%mm7, %%mm3\n\t"                 \
120     "movq      %%mm7, %%mm5\n\t"                 \
121     "paddsw    %%mm0, %%mm3\n\t"                 \
122     "paddsw    %%mm1, %%mm5\n\t"                 \
123     "paddsw    %%mm2, %%mm7\n\t"                 \
124     "paddsw    %%mm6, %%mm0\n\t"                 \
125     "paddsw    %%mm6, %%mm1\n\t"                 \
126     "paddsw    %%mm6, %%mm2\n\t"                 \
127
128 #define RGB_PACK_INTERLEAVE                  \
129     /* pack and interleave even/odd pixels */    \
130     "packuswb  %%mm1, %%mm0\n\t"                 \
131     "packuswb  %%mm5, %%mm3\n\t"                 \
132     "packuswb  %%mm2, %%mm2\n\t"                 \
133     "movq      %%mm0, %%mm1\n\n"                 \
134     "packuswb  %%mm7, %%mm7\n\t"                 \
135     "punpcklbw %%mm3, %%mm0\n\t"                 \
136     "punpckhbw %%mm3, %%mm1\n\t"                 \
137     "punpcklbw %%mm7, %%mm2\n\t"                 \
138
139 #define YUV2RGB_ENDLOOP(depth)                   \
140     "movq 8 (%5, %0, 2), %%mm6\n\t"              \
141     "movd 4 (%3, %0),    %%mm1\n\t"              \
142     "movd 4 (%2, %0),    %%mm0\n\t"              \
143     "add $"AV_STRINGIFY(depth * 8)", %1\n\t"     \
144     "add  $4, %0\n\t"                            \
145     "js   1b\n\t"                                \
146
147 #define YUV2RGB_OPERANDS                                          \
148         : "+r" (index), "+r" (image)                              \
149         : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \
150           "r" (py - 2*index)                                      \
151         );                                                        \
152     }                                                             \
153
154 #define YUV2RGB_OPERANDS_ALPHA                                    \
155         : "+r" (index), "+r" (image)                              \
156         : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \
157           "r" (py - 2*index), "r" (pa - 2*index)                  \
158         );                                                        \
159     }                                                             \
160
161 #define YUV2RGB_ENDFUNC                          \
162     __asm__ volatile (SFENCE"\n\t"EMMS);         \
163     return srcSliceH;                            \
164
165 #define IF0(x)
166 #define IF1(x) x
167
168 #define RGB_PACK16(gmask, is15)                  \
169     "pand      "MANGLE(mmx_redmask)", %%mm0\n\t" \
170     "pand      "MANGLE(mmx_redmask)", %%mm1\n\t" \
171     "movq      %%mm2,     %%mm3\n\t"             \
172     "psllw   $"AV_STRINGIFY(3-is15)", %%mm2\n\t" \
173     "psrlw   $"AV_STRINGIFY(5+is15)", %%mm3\n\t" \
174     "psrlw     $3,        %%mm0\n\t"             \
175     IF##is15("psrlw  $1,  %%mm1\n\t")            \
176     "pand "MANGLE(pb_e0)", %%mm2\n\t"            \
177     "pand "MANGLE(gmask)", %%mm3\n\t"            \
178     "por       %%mm2,     %%mm0\n\t"             \
179     "por       %%mm3,     %%mm1\n\t"             \
180     "movq      %%mm0,     %%mm2\n\t"             \
181     "punpcklbw %%mm1,     %%mm0\n\t"             \
182     "punpckhbw %%mm1,     %%mm2\n\t"             \
183     MOVNTQ "   %%mm0,      (%1)\n\t"             \
184     MOVNTQ "   %%mm2,     8(%1)\n\t"             \
185
186 #define DITHER_RGB                               \
187     "paddusb "BLUE_DITHER"(%4),  %%mm0\n\t"      \
188     "paddusb "GREEN_DITHER"(%4), %%mm2\n\t"      \
189     "paddusb "RED_DITHER"(%4),   %%mm1\n\t"      \
190
191 static inline int RENAME(yuv420_rgb15)(SwsContext *c, const uint8_t *src[],
192                                        int srcStride[],
193                                        int srcSliceY, int srcSliceH,
194                                        uint8_t *dst[], int dstStride[])
195 {
196     int y, h_size;
197
198     YUV2RGB_LOOP(2)
199
200 #ifdef DITHER1XBPP
201         c->blueDither  = ff_dither8[y       & 1];
202         c->greenDither = ff_dither8[y       & 1];
203         c->redDither   = ff_dither8[(y + 1) & 1];
204 #endif
205
206         YUV2RGB_INITIAL_LOAD
207         YUV2RGB
208         RGB_PACK_INTERLEAVE
209 #ifdef DITHER1XBPP
210         DITHER_RGB
211 #endif
212         RGB_PACK16(pb_03, 1)
213
214     YUV2RGB_ENDLOOP(2)
215     YUV2RGB_OPERANDS
216     YUV2RGB_ENDFUNC
217 }
218
219 static inline int RENAME(yuv420_rgb16)(SwsContext *c, const uint8_t *src[],
220                                        int srcStride[],
221                                        int srcSliceY, int srcSliceH,
222                                        uint8_t *dst[], int dstStride[])
223 {
224     int y, h_size;
225
226     YUV2RGB_LOOP(2)
227
228 #ifdef DITHER1XBPP
229         c->blueDither  = ff_dither8[y       & 1];
230         c->greenDither = ff_dither4[y       & 1];
231         c->redDither   = ff_dither8[(y + 1) & 1];
232 #endif
233
234         YUV2RGB_INITIAL_LOAD
235         YUV2RGB
236         RGB_PACK_INTERLEAVE
237 #ifdef DITHER1XBPP
238         DITHER_RGB
239 #endif
240         RGB_PACK16(pb_07, 0)
241
242     YUV2RGB_ENDLOOP(2)
243     YUV2RGB_OPERANDS
244     YUV2RGB_ENDFUNC
245 }
246
247 #define RGB_PACK24(blue, red)\
248     "packuswb  %%mm3,      %%mm0 \n" /* R0 R2 R4 R6 R1 R3 R5 R7 */\
249     "packuswb  %%mm5,      %%mm1 \n" /* B0 B2 B4 B6 B1 B3 B5 B7 */\
250     "packuswb  %%mm7,      %%mm2 \n" /* G0 G2 G4 G6 G1 G3 G5 G7 */\
251     "movq      %%mm"red",  %%mm3 \n"\
252     "movq      %%mm"blue", %%mm6 \n"\
253     "psrlq     $32,        %%mm"red" \n" /* R1 R3 R5 R7 */\
254     "punpcklbw %%mm2,      %%mm3 \n" /* R0 G0 R2 G2 R4 G4 R6 G6 */\
255     "punpcklbw %%mm"red",  %%mm6 \n" /* B0 R1 B2 R3 B4 R5 B6 R7 */\
256     "movq      %%mm3,      %%mm5 \n"\
257     "punpckhbw %%mm"blue", %%mm2 \n" /* G1 B1 G3 B3 G5 B5 G7 B7 */\
258     "punpcklwd %%mm6,      %%mm3 \n" /* R0 G0 B0 R1 R2 G2 B2 R3 */\
259     "punpckhwd %%mm6,      %%mm5 \n" /* R4 G4 B4 R5 R6 G6 B6 R7 */\
260     RGB_PACK24_B
261
262 #if HAVE_MMX2
263 DECLARE_ASM_CONST(8, int16_t, mask1101[4]) = {-1,-1, 0,-1};
264 DECLARE_ASM_CONST(8, int16_t, mask0010[4]) = { 0, 0,-1, 0};
265 DECLARE_ASM_CONST(8, int16_t, mask0110[4]) = { 0,-1,-1, 0};
266 DECLARE_ASM_CONST(8, int16_t, mask1001[4]) = {-1, 0, 0,-1};
267 DECLARE_ASM_CONST(8, int16_t, mask0100[4]) = { 0,-1, 0, 0};
268 #undef RGB_PACK24_B
269 #define RGB_PACK24_B\
270     "pshufw    $0xc6,  %%mm2, %%mm1 \n"\
271     "pshufw    $0x84,  %%mm3, %%mm6 \n"\
272     "pshufw    $0x38,  %%mm5, %%mm7 \n"\
273     "pand "MANGLE(mask1101)", %%mm6 \n" /* R0 G0 B0 R1 -- -- R2 G2 */\
274     "movq      %%mm1,         %%mm0 \n"\
275     "pand "MANGLE(mask0110)", %%mm7 \n" /* -- -- R6 G6 B6 R7 -- -- */\
276     "movq      %%mm1,         %%mm2 \n"\
277     "pand "MANGLE(mask0100)", %%mm1 \n" /* -- -- G3 B3 -- -- -- -- */\
278     "psrlq       $48,         %%mm3 \n" /* B2 R3 -- -- -- -- -- -- */\
279     "pand "MANGLE(mask0010)", %%mm0 \n" /* -- -- -- -- G1 B1 -- -- */\
280     "psllq       $32,         %%mm5 \n" /* -- -- -- -- R4 G4 B4 R5 */\
281     "pand "MANGLE(mask1001)", %%mm2 \n" /* G5 B5 -- -- -- -- G7 B7 */\
282     "por       %%mm3,         %%mm1 \n"\
283     "por       %%mm6,         %%mm0 \n"\
284     "por       %%mm5,         %%mm1 \n"\
285     "por       %%mm7,         %%mm2 \n"\
286     MOVNTQ"    %%mm0,          (%1) \n"\
287     MOVNTQ"    %%mm1,         8(%1) \n"\
288     MOVNTQ"    %%mm2,        16(%1) \n"\
289
290 #else
291 #undef RGB_PACK24_B
292 #define RGB_PACK24_B\
293     "movd      %%mm3,       (%1) \n" /* R0 G0 B0 R1 */\
294     "movd      %%mm2,      4(%1) \n" /* G1 B1 */\
295     "psrlq     $32,        %%mm3 \n"\
296     "psrlq     $16,        %%mm2 \n"\
297     "movd      %%mm3,      6(%1) \n" /* R2 G2 B2 R3 */\
298     "movd      %%mm2,     10(%1) \n" /* G3 B3 */\
299     "psrlq     $16,        %%mm2 \n"\
300     "movd      %%mm5,     12(%1) \n" /* R4 G4 B4 R5 */\
301     "movd      %%mm2,     16(%1) \n" /* G5 B5 */\
302     "psrlq     $32,        %%mm5 \n"\
303     "movd      %%mm2,     20(%1) \n" /* -- -- G7 B7 */\
304     "movd      %%mm5,     18(%1) \n" /* R6 G6 B6 R7 */\
305
306 #endif
307
308 static inline int RENAME(yuv420_rgb24)(SwsContext *c, const uint8_t *src[],
309                                        int srcStride[],
310                                        int srcSliceY, int srcSliceH,
311                                        uint8_t *dst[], int dstStride[])
312 {
313     int y, h_size;
314
315     YUV2RGB_LOOP(3)
316
317         YUV2RGB_INITIAL_LOAD
318         YUV2RGB
319         RGB_PACK24(REG_BLUE, REG_RED)
320
321     YUV2RGB_ENDLOOP(3)
322     YUV2RGB_OPERANDS
323     YUV2RGB_ENDFUNC
324 }
325
326 static inline int RENAME(yuv420_bgr24)(SwsContext *c, const uint8_t *src[],
327                                        int srcStride[],
328                                        int srcSliceY, int srcSliceH,
329                                        uint8_t *dst[], int dstStride[])
330 {
331     int y, h_size;
332
333     YUV2RGB_LOOP(3)
334
335         YUV2RGB_INITIAL_LOAD
336         YUV2RGB
337         RGB_PACK24(REG_RED, REG_BLUE)
338
339     YUV2RGB_ENDLOOP(3)
340     YUV2RGB_OPERANDS
341     YUV2RGB_ENDFUNC
342 }
343
344
345 #define SET_EMPTY_ALPHA                                                      \
346     "pcmpeqd   %%mm"REG_ALPHA", %%mm"REG_ALPHA"\n\t" /* set alpha to 0xFF */ \
347
348 #define LOAD_ALPHA                                   \
349     "movq      (%6, %0, 2),     %%mm"REG_ALPHA"\n\t" \
350
351 #define RGB_PACK32(red, green, blue, alpha)  \
352     "movq      %%mm"blue",  %%mm5\n\t"       \
353     "movq      %%mm"red",   %%mm6\n\t"       \
354     "punpckhbw %%mm"green", %%mm5\n\t"       \
355     "punpcklbw %%mm"green", %%mm"blue"\n\t"  \
356     "punpckhbw %%mm"alpha", %%mm6\n\t"       \
357     "punpcklbw %%mm"alpha", %%mm"red"\n\t"   \
358     "movq      %%mm"blue",  %%mm"green"\n\t" \
359     "movq      %%mm5,       %%mm"alpha"\n\t" \
360     "punpcklwd %%mm"red",   %%mm"blue"\n\t"  \
361     "punpckhwd %%mm"red",   %%mm"green"\n\t" \
362     "punpcklwd %%mm6,       %%mm5\n\t"       \
363     "punpckhwd %%mm6,       %%mm"alpha"\n\t" \
364     MOVNTQ "   %%mm"blue",   0(%1)\n\t"      \
365     MOVNTQ "   %%mm"green",  8(%1)\n\t"      \
366     MOVNTQ "   %%mm5,       16(%1)\n\t"      \
367     MOVNTQ "   %%mm"alpha", 24(%1)\n\t"      \
368
369 static inline int RENAME(yuv420_rgb32)(SwsContext *c, const uint8_t *src[],
370                                        int srcStride[],
371                                        int srcSliceY, int srcSliceH,
372                                        uint8_t *dst[], int dstStride[])
373 {
374     int y, h_size;
375
376     YUV2RGB_LOOP(4)
377
378         YUV2RGB_INITIAL_LOAD
379         YUV2RGB
380         RGB_PACK_INTERLEAVE
381         SET_EMPTY_ALPHA
382         RGB_PACK32(REG_RED, REG_GREEN, REG_BLUE, REG_ALPHA)
383
384     YUV2RGB_ENDLOOP(4)
385     YUV2RGB_OPERANDS
386     YUV2RGB_ENDFUNC
387 }
388
389 static inline int RENAME(yuva420_rgb32)(SwsContext *c, const uint8_t *src[],
390                                         int srcStride[],
391                                         int srcSliceY, int srcSliceH,
392                                         uint8_t *dst[], int dstStride[])
393 {
394 #if HAVE_7REGS
395     int y, h_size;
396
397     YUV2RGB_LOOP(4)
398
399         const uint8_t *pa = src[3] + y * srcStride[3];
400         YUV2RGB_INITIAL_LOAD
401         YUV2RGB
402         RGB_PACK_INTERLEAVE
403         LOAD_ALPHA
404         RGB_PACK32(REG_RED, REG_GREEN, REG_BLUE, REG_ALPHA)
405
406     YUV2RGB_ENDLOOP(4)
407     YUV2RGB_OPERANDS_ALPHA
408     YUV2RGB_ENDFUNC
409 #endif
410 }
411
412 static inline int RENAME(yuv420_bgr32)(SwsContext *c, const uint8_t *src[],
413                                        int srcStride[],
414                                        int srcSliceY, int srcSliceH,
415                                        uint8_t *dst[], int dstStride[])
416 {
417     int y, h_size;
418
419     YUV2RGB_LOOP(4)
420
421         YUV2RGB_INITIAL_LOAD
422         YUV2RGB
423         RGB_PACK_INTERLEAVE
424         SET_EMPTY_ALPHA
425         RGB_PACK32(REG_BLUE, REG_GREEN, REG_RED, REG_ALPHA)
426
427     YUV2RGB_ENDLOOP(4)
428     YUV2RGB_OPERANDS
429     YUV2RGB_ENDFUNC
430 }
431
432 static inline int RENAME(yuva420_bgr32)(SwsContext *c, const uint8_t *src[],
433                                         int srcStride[],
434                                         int srcSliceY, int srcSliceH,
435                                         uint8_t *dst[], int dstStride[])
436 {
437 #if HAVE_7REGS
438     int y, h_size;
439
440     YUV2RGB_LOOP(4)
441
442         const uint8_t *pa = src[3] + y * srcStride[3];
443         YUV2RGB_INITIAL_LOAD
444         YUV2RGB
445         RGB_PACK_INTERLEAVE
446         LOAD_ALPHA
447         RGB_PACK32(REG_BLUE, REG_GREEN, REG_RED, REG_ALPHA)
448
449     YUV2RGB_ENDLOOP(4)
450     YUV2RGB_OPERANDS_ALPHA
451     YUV2RGB_ENDFUNC
452 #endif
453 }