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add const, suppress warnings
[libswscale.git] / yuv2rgb_template.c
blob7cebc335b51b53188daefa17bf2bd6dfbe946c9b
1 /*
2 * yuv2rgb_mmx.c, Software YUV to RGB converter with Intel MMX "technology"
3 *
4 * Copyright (C) 2000, Silicon Integrated System Corp.
5 *
6 * Author: Olie Lho <ollie@sis.com.tw>
7 *
8 * 15,24 bpp and dithering from Michael Niedermayer (michaelni@gmx.at)
9 * MMX/MMX2 Template stuff from Michael Niedermayer (needed for fast movntq support)
10 * context / deglobalize stuff by Michael Niedermayer
11 *
12 * This file is part of mpeg2dec, a free MPEG-2 video decoder
13 *
14 * mpeg2dec is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * mpeg2dec is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with mpeg2dec; if not, write to the Free Software
26 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 */
28
29 #undef MOVNTQ
30 #undef EMMS
31 #undef SFENCE
32
33 #ifdef HAVE_3DNOW
34 /* On K6 femms is faster of emms. On K7 femms is directly mapped on emms. */
35 #define EMMS "femms"
36 #else
37 #define EMMS "emms"
38 #endif
39
40 #ifdef HAVE_MMX2
41 #define MOVNTQ "movntq"
42 #define SFENCE "sfence"
43 #else
44 #define MOVNTQ "movq"
45 #define SFENCE "/nop"
46 #endif
47
48 #define YUV2RGB \
49 /* Do the multiply part of the conversion for even and odd pixels,
50 register usage:
51 mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels,
52 mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd pixels,
53 mm6 -> Y even, mm7 -> Y odd */\
54 /* convert the chroma part */\
55 "punpcklbw %%mm4, %%mm0;" /* scatter 4 Cb 00 u3 00 u2 00 u1 00 u0 */ \
56 "punpcklbw %%mm4, %%mm1;" /* scatter 4 Cr 00 v3 00 v2 00 v1 00 v0 */ \
57 \
58 "psllw $3, %%mm0;" /* Promote precision */ \
59 "psllw $3, %%mm1;" /* Promote precision */ \
60 \
61 "psubsw "U_OFFSET"(%4), %%mm0;" /* Cb -= 128 */ \
62 "psubsw "V_OFFSET"(%4), %%mm1;" /* Cr -= 128 */ \
63 \
64 "movq %%mm0, %%mm2;" /* Copy 4 Cb 00 u3 00 u2 00 u1 00 u0 */ \
65 "movq %%mm1, %%mm3;" /* Copy 4 Cr 00 v3 00 v2 00 v1 00 v0 */ \
66 \
67 "pmulhw "UG_COEFF"(%4), %%mm2;" /* Mul Cb with green coeff -> Cb green */ \
68 "pmulhw "VG_COEFF"(%4), %%mm3;" /* Mul Cr with green coeff -> Cr green */ \
69 \
70 "pmulhw "UB_COEFF"(%4), %%mm0;" /* Mul Cb -> Cblue 00 b3 00 b2 00 b1 00 b0 */\
71 "pmulhw "VR_COEFF"(%4), %%mm1;" /* Mul Cr -> Cred 00 r3 00 r2 00 r1 00 r0 */\
72 \
73 "paddsw %%mm3, %%mm2;" /* Cb green + Cr green -> Cgreen */\
74 \
75 /* convert the luma part */\
76 "movq %%mm6, %%mm7;" /* Copy 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */\
77 "pand "MANGLE(mmx_00ffw)", %%mm6;" /* get Y even 00 Y6 00 Y4 00 Y2 00 Y0 */\
78 \
79 "psrlw $8, %%mm7;" /* get Y odd 00 Y7 00 Y5 00 Y3 00 Y1 */\
80 \
81 "psllw $3, %%mm6;" /* Promote precision */\
82 "psllw $3, %%mm7;" /* Promote precision */\
83 \
84 "psubw "Y_OFFSET"(%4), %%mm6;" /* Y -= 16 */\
85 "psubw "Y_OFFSET"(%4), %%mm7;" /* Y -= 16 */\
86 \
87 "pmulhw "Y_COEFF"(%4), %%mm6;" /* Mul 4 Y even 00 y6 00 y4 00 y2 00 y0 */\
88 "pmulhw "Y_COEFF"(%4), %%mm7;" /* Mul 4 Y odd 00 y7 00 y5 00 y3 00 y1 */\
89 \
90 /* Do the addition part of the conversion for even and odd pixels,
91 register usage:
92 mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels,
93 mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd pixels,
94 mm6 -> Y even, mm7 -> Y odd */\
95 "movq %%mm0, %%mm3;" /* Copy Cblue */\
96 "movq %%mm1, %%mm4;" /* Copy Cred */\
97 "movq %%mm2, %%mm5;" /* Copy Cgreen */\
98 \
99 "paddsw %%mm6, %%mm0;" /* Y even + Cblue 00 B6 00 B4 00 B2 00 B0 */\
100 "paddsw %%mm7, %%mm3;" /* Y odd + Cblue 00 B7 00 B5 00 B3 00 B1 */\
101 \
102 "paddsw %%mm6, %%mm1;" /* Y even + Cred 00 R6 00 R4 00 R2 00 R0 */\
103 "paddsw %%mm7, %%mm4;" /* Y odd + Cred 00 R7 00 R5 00 R3 00 R1 */\
104 \
105 "paddsw %%mm6, %%mm2;" /* Y even + Cgreen 00 G6 00 G4 00 G2 00 G0 */\
106 "paddsw %%mm7, %%mm5;" /* Y odd + Cgreen 00 G7 00 G5 00 G3 00 G1 */\
107 \
108 /* Limit RGB even to 0..255 */\
109 "packuswb %%mm0, %%mm0;" /* B6 B4 B2 B0 B6 B4 B2 B0 */\
110 "packuswb %%mm1, %%mm1;" /* R6 R4 R2 R0 R6 R4 R2 R0 */\
111 "packuswb %%mm2, %%mm2;" /* G6 G4 G2 G0 G6 G4 G2 G0 */\
112 \
113 /* Limit RGB odd to 0..255 */\
114 "packuswb %%mm3, %%mm3;" /* B7 B5 B3 B1 B7 B5 B3 B1 */\
115 "packuswb %%mm4, %%mm4;" /* R7 R5 R3 R1 R7 R5 R3 R1 */\
116 "packuswb %%mm5, %%mm5;" /* G7 G5 G3 G1 G7 G5 G3 G1 */\
117 \
118 /* Interleave RGB even and odd */\
119 "punpcklbw %%mm3, %%mm0;" /* B7 B6 B5 B4 B3 B2 B1 B0 */\
120 "punpcklbw %%mm4, %%mm1;" /* R7 R6 R5 R4 R3 R2 R1 R0 */\
121 "punpcklbw %%mm5, %%mm2;" /* G7 G6 G5 G4 G3 G2 G1 G0 */\
122
123
124 static inline int RENAME(yuv420_rgb16)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
125 int srcSliceH, uint8_t* dst[], int dstStride[]){
126 int y, h_size;
127
128 if(c->srcFormat == PIX_FMT_YUV422P){
129 srcStride[1] *= 2;
130 srcStride[2] *= 2;
131 }
132
133 h_size= (c->dstW+7)&~7;
134 if(h_size*2 > FFABS(dstStride[0])) h_size-=8;
135
136 asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
137 //printf("%X %X %X %X %X %X %X %X %X %X\n", (int)&c->redDither, (int)&b5Dither, (int)src[0], (int)src[1], (int)src[2], (int)dst[0],
138 //srcStride[0],srcStride[1],srcStride[2],dstStride[0]);
139 for (y= 0; y<srcSliceH; y++ ) {
140 uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
141 uint8_t *py = src[0] + y*srcStride[0];
142 uint8_t *pu = src[1] + (y>>1)*srcStride[1];
143 uint8_t *pv = src[2] + (y>>1)*srcStride[2];
144 long index= -h_size/2;
145
146 b5Dither= ff_dither8[y&1];
147 g6Dither= ff_dither4[y&1];
148 g5Dither= ff_dither8[y&1];
149 r5Dither= ff_dither8[(y+1)&1];
150 /* this mmx assembly code deals with SINGLE scan line at a time, it convert 8
151 pixels in each iteration */
152 asm volatile (
153 /* load data for start of next scan line */
154 "movd (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
155 "movd (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
156 "movq (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
157 //".balign 16 \n\t"
158 "1: \n\t"
159 /* no speed diference on my p3@500 with prefetch,
160 * if it is faster for anyone with -benchmark then tell me
161 PREFETCH" 64(%0) \n\t"
162 PREFETCH" 64(%1) \n\t"
163 PREFETCH" 64(%2) \n\t"
164 */
165 YUV2RGB
166
167 #ifdef DITHER1XBPP
168 "paddusb "MANGLE(b5Dither)", %%mm0;"
169 "paddusb "MANGLE(g6Dither)", %%mm2;"
170 "paddusb "MANGLE(r5Dither)", %%mm1;"
171 #endif
172 /* mask unneeded bits off */
173 "pand "MANGLE(mmx_redmask)", %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */
174 "pand "MANGLE(mmx_grnmask)", %%mm2;" /* g7g6g5g4 g3g2_0_0 g7g6g5g4 g3g2_0_0 */
175 "pand "MANGLE(mmx_redmask)", %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */
176
177 "psrlw $3, %%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
178 "pxor %%mm4, %%mm4;" /* zero mm4 */
179
180 "movq %%mm0, %%mm5;" /* Copy B7-B0 */
181 "movq %%mm2, %%mm7;" /* Copy G7-G0 */
182
183 /* convert rgb24 plane to rgb16 pack for pixel 0-3 */
184 "punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */
185 "punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
186
187 "psllw $3, %%mm2;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
188 "por %%mm2, %%mm0;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */
189
190 "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
191 MOVNTQ " %%mm0, (%1);" /* store pixel 0-3 */
192
193 /* convert rgb24 plane to rgb16 pack for pixel 0-3 */
194 "punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */
195 "punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
196
197 "psllw $3, %%mm7;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
198 "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
199
200 "por %%mm7, %%mm5;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */
201 "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
202
203 MOVNTQ " %%mm5, 8 (%1);" /* store pixel 4-7 */
204
205 "add $16, %1 \n\t"
206 "add $4, %0 \n\t"
207 " js 1b \n\t"
208
209 : "+r" (index), "+r" (image)
210 : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
211 );
212 }
213
214 asm volatile (EMMS);
215
216 return srcSliceH;
217 }
218
219 static inline int RENAME(yuv420_rgb15)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
220 int srcSliceH, uint8_t* dst[], int dstStride[]){
221 int y, h_size;
222
223 if(c->srcFormat == PIX_FMT_YUV422P){
224 srcStride[1] *= 2;
225 srcStride[2] *= 2;
226 }
227
228 h_size= (c->dstW+7)&~7;
229 if(h_size*2 > FFABS(dstStride[0])) h_size-=8;
230
231 asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
232 //printf("%X %X %X %X %X %X %X %X %X %X\n", (int)&c->redDither, (int)&b5Dither, (int)src[0], (int)src[1], (int)src[2], (int)dst[0],
233 //srcStride[0],srcStride[1],srcStride[2],dstStride[0]);
234 for (y= 0; y<srcSliceH; y++ ) {
235 uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
236 uint8_t *py = src[0] + y*srcStride[0];
237 uint8_t *pu = src[1] + (y>>1)*srcStride[1];
238 uint8_t *pv = src[2] + (y>>1)*srcStride[2];
239 long index= -h_size/2;
240
241 b5Dither= ff_dither8[y&1];
242 g6Dither= ff_dither4[y&1];
243 g5Dither= ff_dither8[y&1];
244 r5Dither= ff_dither8[(y+1)&1];
245 /* this mmx assembly code deals with SINGLE scan line at a time, it convert 8
246 pixels in each iteration */
247 asm volatile (
248 /* load data for start of next scan line */
249 "movd (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
250 "movd (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
251 "movq (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
252 //".balign 16 \n\t"
253 "1: \n\t"
254 YUV2RGB
255
256 #ifdef DITHER1XBPP
257 "paddusb "MANGLE(b5Dither)", %%mm0 \n\t"
258 "paddusb "MANGLE(g5Dither)", %%mm2 \n\t"
259 "paddusb "MANGLE(r5Dither)", %%mm1 \n\t"
260 #endif
261
262 /* mask unneeded bits off */
263 "pand "MANGLE(mmx_redmask)", %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */
264 "pand "MANGLE(mmx_redmask)", %%mm2;" /* g7g6g5g4 g3_0_0_0 g7g6g5g4 g3_0_0_0 */
265 "pand "MANGLE(mmx_redmask)", %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */
266
267 "psrlw $3, %%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
268 "psrlw $1, %%mm1;" /* 0_r7r6r5 r4r3_0_0 0_r7r6r5 r4r3_0_0 */
269 "pxor %%mm4, %%mm4;" /* zero mm4 */
270
271 "movq %%mm0, %%mm5;" /* Copy B7-B0 */
272 "movq %%mm2, %%mm7;" /* Copy G7-G0 */
273
274 /* convert rgb24 plane to rgb16 pack for pixel 0-3 */
275 "punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3_0_0_0 */
276 "punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
277
278 "psllw $2, %%mm2;" /* 0_0_0_0 0_0_g7g6 g5g4g3_0 0_0_0_0 */
279 "por %%mm2, %%mm0;" /* 0_r7r6r5 r4r3g7g6 g5g4g3b7 b6b5b4b3 */
280
281 "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
282 MOVNTQ " %%mm0, (%1);" /* store pixel 0-3 */
283
284 /* convert rgb24 plane to rgb16 pack for pixel 0-3 */
285 "punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 0_g7g6g5 g4g3_0_0 */
286 "punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
287
288 "psllw $2, %%mm7;" /* 0_0_0_0 0_0_g7g6 g5g4g3_0 0_0_0_0 */
289 "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
290
291 "por %%mm7, %%mm5;" /* 0_r7r6r5 r4r3g7g6 g5g4g3b7 b6b5b4b3 */
292 "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
293
294 MOVNTQ " %%mm5, 8 (%1);" /* store pixel 4-7 */
295
296 "add $16, %1 \n\t"
297 "add $4, %0 \n\t"
298 " js 1b \n\t"
299 : "+r" (index), "+r" (image)
300 : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
301 );
302 }
303
304 asm volatile (EMMS);
305 return srcSliceH;
306 }
307
308 static inline int RENAME(yuv420_rgb24)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
309 int srcSliceH, uint8_t* dst[], int dstStride[]){
310 int y, h_size;
311
312 if(c->srcFormat == PIX_FMT_YUV422P){
313 srcStride[1] *= 2;
314 srcStride[2] *= 2;
315 }
316
317 h_size= (c->dstW+7)&~7;
318 if(h_size*3 > FFABS(dstStride[0])) h_size-=8;
319
320 asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
321
322 for (y= 0; y<srcSliceH; y++ ) {
323 uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
324 uint8_t *py = src[0] + y*srcStride[0];
325 uint8_t *pu = src[1] + (y>>1)*srcStride[1];
326 uint8_t *pv = src[2] + (y>>1)*srcStride[2];
327 long index= -h_size/2;
328
329 /* this mmx assembly code deals with SINGLE scan line at a time, it convert 8
330 pixels in each iteration */
331 asm volatile (
332 /* load data for start of next scan line */
333 "movd (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
334 "movd (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
335 "movq (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
336 //".balign 16 \n\t"
337 "1: \n\t"
338 YUV2RGB
339 /* mm0=B, %%mm2=G, %%mm1=R */
340 #ifdef HAVE_MMX2
341 "movq "MANGLE(ff_M24A)", %%mm4 \n\t"
342 "movq "MANGLE(ff_M24C)", %%mm7 \n\t"
343 "pshufw $0x50, %%mm0, %%mm5 \n\t" /* B3 B2 B3 B2 B1 B0 B1 B0 */
344 "pshufw $0x50, %%mm2, %%mm3 \n\t" /* G3 G2 G3 G2 G1 G0 G1 G0 */
345 "pshufw $0x00, %%mm1, %%mm6 \n\t" /* R1 R0 R1 R0 R1 R0 R1 R0 */
346
347 "pand %%mm4, %%mm5 \n\t" /* B2 B1 B0 */
348 "pand %%mm4, %%mm3 \n\t" /* G2 G1 G0 */
349 "pand %%mm7, %%mm6 \n\t" /* R1 R0 */
350
351 "psllq $8, %%mm3 \n\t" /* G2 G1 G0 */
352 "por %%mm5, %%mm6 \n\t"
353 "por %%mm3, %%mm6 \n\t"
354 MOVNTQ" %%mm6, (%1) \n\t"
355
356 "psrlq $8, %%mm2 \n\t" /* 00 G7 G6 G5 G4 G3 G2 G1 */
357 "pshufw $0xA5, %%mm0, %%mm5 \n\t" /* B5 B4 B5 B4 B3 B2 B3 B2 */
358 "pshufw $0x55, %%mm2, %%mm3 \n\t" /* G4 G3 G4 G3 G4 G3 G4 G3 */
359 "pshufw $0xA5, %%mm1, %%mm6 \n\t" /* R5 R4 R5 R4 R3 R2 R3 R2 */
360
361 "pand "MANGLE(ff_M24B)", %%mm5 \n\t" /* B5 B4 B3 */
362 "pand %%mm7, %%mm3 \n\t" /* G4 G3 */
363 "pand %%mm4, %%mm6 \n\t" /* R4 R3 R2 */
364
365 "por %%mm5, %%mm3 \n\t" /* B5 G4 B4 G3 B3 */
366 "por %%mm3, %%mm6 \n\t"
367 MOVNTQ" %%mm6, 8(%1) \n\t"
368
369 "pshufw $0xFF, %%mm0, %%mm5 \n\t" /* B7 B6 B7 B6 B7 B6 B6 B7 */
370 "pshufw $0xFA, %%mm2, %%mm3 \n\t" /* 00 G7 00 G7 G6 G5 G6 G5 */
371 "pshufw $0xFA, %%mm1, %%mm6 \n\t" /* R7 R6 R7 R6 R5 R4 R5 R4 */
372 "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
373
374 "pand %%mm7, %%mm5 \n\t" /* B7 B6 */
375 "pand %%mm4, %%mm3 \n\t" /* G7 G6 G5 */
376 "pand "MANGLE(ff_M24B)", %%mm6 \n\t" /* R7 R6 R5 */
377 "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
378 \
379 "por %%mm5, %%mm3 \n\t"
380 "por %%mm3, %%mm6 \n\t"
381 MOVNTQ" %%mm6, 16(%1) \n\t"
382 "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
383 "pxor %%mm4, %%mm4 \n\t"
384
385 #else
386
387 "pxor %%mm4, %%mm4 \n\t"
388 "movq %%mm0, %%mm5 \n\t" /* B */
389 "movq %%mm1, %%mm6 \n\t" /* R */
390 "punpcklbw %%mm2, %%mm0 \n\t" /* GBGBGBGB 0 */
391 "punpcklbw %%mm4, %%mm1 \n\t" /* 0R0R0R0R 0 */
392 "punpckhbw %%mm2, %%mm5 \n\t" /* GBGBGBGB 2 */
393 "punpckhbw %%mm4, %%mm6 \n\t" /* 0R0R0R0R 2 */
394 "movq %%mm0, %%mm7 \n\t" /* GBGBGBGB 0 */
395 "movq %%mm5, %%mm3 \n\t" /* GBGBGBGB 2 */
396 "punpcklwd %%mm1, %%mm7 \n\t" /* 0RGB0RGB 0 */
397 "punpckhwd %%mm1, %%mm0 \n\t" /* 0RGB0RGB 1 */
398 "punpcklwd %%mm6, %%mm5 \n\t" /* 0RGB0RGB 2 */
399 "punpckhwd %%mm6, %%mm3 \n\t" /* 0RGB0RGB 3 */
400
401 "movq %%mm7, %%mm2 \n\t" /* 0RGB0RGB 0 */
402 "movq %%mm0, %%mm6 \n\t" /* 0RGB0RGB 1 */
403 "movq %%mm5, %%mm1 \n\t" /* 0RGB0RGB 2 */
404 "movq %%mm3, %%mm4 \n\t" /* 0RGB0RGB 3 */
405
406 "psllq $40, %%mm7 \n\t" /* RGB00000 0 */
407 "psllq $40, %%mm0 \n\t" /* RGB00000 1 */
408 "psllq $40, %%mm5 \n\t" /* RGB00000 2 */
409 "psllq $40, %%mm3 \n\t" /* RGB00000 3 */
410
411 "punpckhdq %%mm2, %%mm7 \n\t" /* 0RGBRGB0 0 */
412 "punpckhdq %%mm6, %%mm0 \n\t" /* 0RGBRGB0 1 */
413 "punpckhdq %%mm1, %%mm5 \n\t" /* 0RGBRGB0 2 */
414 "punpckhdq %%mm4, %%mm3 \n\t" /* 0RGBRGB0 3 */
415
416 "psrlq $8, %%mm7 \n\t" /* 00RGBRGB 0 */
417 "movq %%mm0, %%mm6 \n\t" /* 0RGBRGB0 1 */
418 "psllq $40, %%mm0 \n\t" /* GB000000 1 */
419 "por %%mm0, %%mm7 \n\t" /* GBRGBRGB 0 */
420 MOVNTQ" %%mm7, (%1) \n\t"
421
422 "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
423
424 "psrlq $24, %%mm6 \n\t" /* 0000RGBR 1 */
425 "movq %%mm5, %%mm1 \n\t" /* 0RGBRGB0 2 */
426 "psllq $24, %%mm5 \n\t" /* BRGB0000 2 */
427 "por %%mm5, %%mm6 \n\t" /* BRGBRGBR 1 */
428 MOVNTQ" %%mm6, 8(%1) \n\t"
429
430 "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
431
432 "psrlq $40, %%mm1 \n\t" /* 000000RG 2 */
433 "psllq $8, %%mm3 \n\t" /* RGBRGB00 3 */
434 "por %%mm3, %%mm1 \n\t" /* RGBRGBRG 2 */
435 MOVNTQ" %%mm1, 16(%1) \n\t"
436
437 "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
438 "pxor %%mm4, %%mm4 \n\t"
439 #endif
440
441 "add $24, %1 \n\t"
442 "add $4, %0 \n\t"
443 " js 1b \n\t"
444
445 : "+r" (index), "+r" (image)
446 : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
447 );
448 }
449
450 asm volatile (EMMS);
451 return srcSliceH;
452 }
453
454 static inline int RENAME(yuv420_rgb32)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
455 int srcSliceH, uint8_t* dst[], int dstStride[]){
456 int y, h_size;
457
458 if(c->srcFormat == PIX_FMT_YUV422P){
459 srcStride[1] *= 2;
460 srcStride[2] *= 2;
461 }
462
463 h_size= (c->dstW+7)&~7;
464 if(h_size*4 > FFABS(dstStride[0])) h_size-=8;
465
466 asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
467
468 for (y= 0; y<srcSliceH; y++ ) {
469 uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
470 uint8_t *py = src[0] + y*srcStride[0];
471 uint8_t *pu = src[1] + (y>>1)*srcStride[1];
472 uint8_t *pv = src[2] + (y>>1)*srcStride[2];
473 long index= -h_size/2;
474
475 /* this mmx assembly code deals with SINGLE scan line at a time, it convert 8
476 pixels in each iteration */
477 asm volatile (
478 /* load data for start of next scan line */
479 "movd (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
480 "movd (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
481 "movq (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
482 //".balign 16 \n\t"
483 "1: \n\t"
484 YUV2RGB
485 /* convert RGB plane to RGB packed format,
486 mm0 -> B, mm1 -> R, mm2 -> G, mm3 -> 0,
487 mm4 -> GB, mm5 -> AR pixel 4-7,
488 mm6 -> GB, mm7 -> AR pixel 0-3 */
489 "pxor %%mm3, %%mm3;" /* zero mm3 */
490
491 "movq %%mm0, %%mm6;" /* B7 B6 B5 B4 B3 B2 B1 B0 */
492 "movq %%mm1, %%mm7;" /* R7 R6 R5 R4 R3 R2 R1 R0 */
493
494 "movq %%mm0, %%mm4;" /* B7 B6 B5 B4 B3 B2 B1 B0 */
495 "movq %%mm1, %%mm5;" /* R7 R6 R5 R4 R3 R2 R1 R0 */
496
497 "punpcklbw %%mm2, %%mm6;" /* G3 B3 G2 B2 G1 B1 G0 B0 */
498 "punpcklbw %%mm3, %%mm7;" /* 00 R3 00 R2 00 R1 00 R0 */
499
500 "punpcklwd %%mm7, %%mm6;" /* 00 R1 B1 G1 00 R0 B0 G0 */
501 MOVNTQ " %%mm6, (%1);" /* Store ARGB1 ARGB0 */
502
503 "movq %%mm0, %%mm6;" /* B7 B6 B5 B4 B3 B2 B1 B0 */
504 "punpcklbw %%mm2, %%mm6;" /* G3 B3 G2 B2 G1 B1 G0 B0 */
505
506 "punpckhwd %%mm7, %%mm6;" /* 00 R3 G3 B3 00 R2 B3 G2 */
507 MOVNTQ " %%mm6, 8 (%1);" /* Store ARGB3 ARGB2 */
508
509 "punpckhbw %%mm2, %%mm4;" /* G7 B7 G6 B6 G5 B5 G4 B4 */
510 "punpckhbw %%mm3, %%mm5;" /* 00 R7 00 R6 00 R5 00 R4 */
511
512 "punpcklwd %%mm5, %%mm4;" /* 00 R5 B5 G5 00 R4 B4 G4 */
513 MOVNTQ " %%mm4, 16 (%1);" /* Store ARGB5 ARGB4 */
514
515 "movq %%mm0, %%mm4;" /* B7 B6 B5 B4 B3 B2 B1 B0 */
516 "punpckhbw %%mm2, %%mm4;" /* G7 B7 G6 B6 G5 B5 G4 B4 */
517
518 "punpckhwd %%mm5, %%mm4;" /* 00 R7 G7 B7 00 R6 B6 G6 */
519 MOVNTQ " %%mm4, 24 (%1);" /* Store ARGB7 ARGB6 */
520
521 "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
522 "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
523
524 "pxor %%mm4, %%mm4;" /* zero mm4 */
525 "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
526
527 "add $32, %1 \n\t"
528 "add $4, %0 \n\t"
529 " js 1b \n\t"
530
531 : "+r" (index), "+r" (image)
532 : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
533 );
534 }
535
536 asm volatile (EMMS);
537 return srcSliceH;
538 }