Libav
yuv2rgb_altivec.c
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1 /*
2  * AltiVec acceleration for colorspace conversion
3  *
4  * copyright (C) 2004 Marc Hoffman <marc.hoffman@analog.com>
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /*
24  * Convert I420 YV12 to RGB in various formats,
25  * it rejects images that are not in 420 formats,
26  * it rejects images that don't have widths of multiples of 16,
27  * it rejects images that don't have heights of multiples of 2.
28  * Reject defers to C simulation code.
29  *
30  * Lots of optimizations to be done here.
31  *
32  * 1. Need to fix saturation code. I just couldn't get it to fly with packs
33  * and adds, so we currently use max/min to clip.
34  *
35  * 2. The inefficient use of chroma loading needs a bit of brushing up.
36  *
37  * 3. Analysis of pipeline stalls needs to be done. Use shark to identify
38  * pipeline stalls.
39  *
40  *
41  * MODIFIED to calculate coeffs from currently selected color space.
42  * MODIFIED core to be a macro where you specify the output format.
43  * ADDED UYVY conversion which is never called due to some thing in swscale.
44  * CORRECTED algorithim selection to be strict on input formats.
45  * ADDED runtime detection of AltiVec.
46  *
47  * ADDED altivec_yuv2packedX vertical scl + RGB converter
48  *
49  * March 27,2004
50  * PERFORMANCE ANALYSIS
51  *
52  * The C version uses 25% of the processor or ~250Mips for D1 video rawvideo
53  * used as test.
54  * The AltiVec version uses 10% of the processor or ~100Mips for D1 video
55  * same sequence.
56  *
57  * 720 * 480 * 30 ~10MPS
58  *
59  * so we have roughly 10 clocks per pixel. This is too high, something has
60  * to be wrong.
61  *
62  * OPTIMIZED clip codes to utilize vec_max and vec_packs removing the
63  * need for vec_min.
64  *
65  * OPTIMIZED DST OUTPUT cache/DMA controls. We are pretty much guaranteed to
66  * have the input video frame, it was just decompressed so it probably resides
67  * in L1 caches. However, we are creating the output video stream. This needs
68  * to use the DSTST instruction to optimize for the cache. We couple this with
69  * the fact that we are not going to be visiting the input buffer again so we
70  * mark it Least Recently Used. This shaves 25% of the processor cycles off.
71  *
72  * Now memcpy is the largest mips consumer in the system, probably due
73  * to the inefficient X11 stuff.
74  *
75  * GL libraries seem to be very slow on this machine 1.33Ghz PB running
76  * Jaguar, this is not the case for my 1Ghz PB. I thought it might be
77  * a versioning issue, however I have libGL.1.2.dylib for both
78  * machines. (We need to figure this out now.)
79  *
80  * GL2 libraries work now with patch for RGB32.
81  *
82  * NOTE: quartz vo driver ARGB32_to_RGB24 consumes 30% of the processor.
83  *
84  * Integrated luma prescaling adjustment for saturation/contrast/brightness
85  * adjustment.
86  */
87 
88 #include <stdio.h>
89 #include <stdlib.h>
90 #include <string.h>
91 #include <inttypes.h>
92 
93 #include "config.h"
94 #include "libswscale/rgb2rgb.h"
95 #include "libswscale/swscale.h"
97 #include "libavutil/attributes.h"
98 #include "libavutil/cpu.h"
99 #include "yuv2rgb_altivec.h"
100 
101 #if HAVE_ALTIVEC
102 
103 #undef PROFILE_THE_BEAST
104 #undef INC_SCALING
105 
106 typedef unsigned char ubyte;
107 typedef signed char sbyte;
108 
109 /* RGB interleaver, 16 planar pels 8-bit samples per channel in
110  * homogeneous vector registers x0,x1,x2 are interleaved with the
111  * following technique:
112  *
113  * o0 = vec_mergeh(x0, x1);
114  * o1 = vec_perm(o0, x2, perm_rgb_0);
115  * o2 = vec_perm(o0, x2, perm_rgb_1);
116  * o3 = vec_mergel(x0, x1);
117  * o4 = vec_perm(o3, o2, perm_rgb_2);
118  * o5 = vec_perm(o3, o2, perm_rgb_3);
119  *
120  * perm_rgb_0: o0(RG).h v1(B) --> o1*
121  * 0 1 2 3 4
122  * rgbr|gbrg|brgb|rgbr
123  * 0010 0100 1001 0010
124  * 0102 3145 2673 894A
125  *
126  * perm_rgb_1: o0(RG).h v1(B) --> o2
127  * 0 1 2 3 4
128  * gbrg|brgb|bbbb|bbbb
129  * 0100 1001 1111 1111
130  * B5CD 6EF7 89AB CDEF
131  *
132  * perm_rgb_2: o3(RG).l o2(rgbB.l) --> o4*
133  * 0 1 2 3 4
134  * gbrg|brgb|rgbr|gbrg
135  * 1111 1111 0010 0100
136  * 89AB CDEF 0182 3945
137  *
138  * perm_rgb_2: o3(RG).l o2(rgbB.l) ---> o5*
139  * 0 1 2 3 4
140  * brgb|rgbr|gbrg|brgb
141  * 1001 0010 0100 1001
142  * a67b 89cA BdCD eEFf
143  */
144 static const vector unsigned char
145  perm_rgb_0 = { 0x00, 0x01, 0x10, 0x02, 0x03, 0x11, 0x04, 0x05,
146  0x12, 0x06, 0x07, 0x13, 0x08, 0x09, 0x14, 0x0a },
147  perm_rgb_1 = { 0x0b, 0x15, 0x0c, 0x0d, 0x16, 0x0e, 0x0f, 0x17,
148  0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
149  perm_rgb_2 = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
150  0x00, 0x01, 0x18, 0x02, 0x03, 0x19, 0x04, 0x05 },
151  perm_rgb_3 = { 0x1a, 0x06, 0x07, 0x1b, 0x08, 0x09, 0x1c, 0x0a,
152  0x0b, 0x1d, 0x0c, 0x0d, 0x1e, 0x0e, 0x0f, 0x1f };
153 
154 #define vec_merge3(x2, x1, x0, y0, y1, y2) \
155  do { \
156  __typeof__(x0) o0, o2, o3; \
157  o0 = vec_mergeh(x0, x1); \
158  y0 = vec_perm(o0, x2, perm_rgb_0); \
159  o2 = vec_perm(o0, x2, perm_rgb_1); \
160  o3 = vec_mergel(x0, x1); \
161  y1 = vec_perm(o3, o2, perm_rgb_2); \
162  y2 = vec_perm(o3, o2, perm_rgb_3); \
163  } while (0)
164 
165 #define vec_mstbgr24(x0, x1, x2, ptr) \
166  do { \
167  __typeof__(x0) _0, _1, _2; \
168  vec_merge3(x0, x1, x2, _0, _1, _2); \
169  vec_st(_0, 0, ptr++); \
170  vec_st(_1, 0, ptr++); \
171  vec_st(_2, 0, ptr++); \
172  } while (0)
173 
174 #define vec_mstrgb24(x0, x1, x2, ptr) \
175  do { \
176  __typeof__(x0) _0, _1, _2; \
177  vec_merge3(x2, x1, x0, _0, _1, _2); \
178  vec_st(_0, 0, ptr++); \
179  vec_st(_1, 0, ptr++); \
180  vec_st(_2, 0, ptr++); \
181  } while (0)
182 
183 /* pack the pixels in rgb0 format
184  * msb R
185  * lsb 0
186  */
187 #define vec_mstrgb32(T, x0, x1, x2, x3, ptr) \
188  do { \
189  T _0, _1, _2, _3; \
190  _0 = vec_mergeh(x0, x1); \
191  _1 = vec_mergeh(x2, x3); \
192  _2 = (T) vec_mergeh((vector unsigned short) _0, \
193  (vector unsigned short) _1); \
194  _3 = (T) vec_mergel((vector unsigned short) _0, \
195  (vector unsigned short) _1); \
196  vec_st(_2, 0 * 16, (T *) ptr); \
197  vec_st(_3, 1 * 16, (T *) ptr); \
198  _0 = vec_mergel(x0, x1); \
199  _1 = vec_mergel(x2, x3); \
200  _2 = (T) vec_mergeh((vector unsigned short) _0, \
201  (vector unsigned short) _1); \
202  _3 = (T) vec_mergel((vector unsigned short) _0, \
203  (vector unsigned short) _1); \
204  vec_st(_2, 2 * 16, (T *) ptr); \
205  vec_st(_3, 3 * 16, (T *) ptr); \
206  ptr += 4; \
207  } while (0)
208 
209 /*
210  * 1 0 1.4021 | | Y |
211  * 1 -0.3441 -0.7142 |x| Cb|
212  * 1 1.7718 0 | | Cr|
213  *
214  *
215  * Y: [-128 127]
216  * Cb/Cr : [-128 127]
217  *
218  * typical YUV conversion works on Y: 0-255 this version has been
219  * optimized for JPEG decoding.
220  */
221 
222 #define vec_unh(x) \
223  (vector signed short) \
224  vec_perm(x, (__typeof__(x)) { 0 }, \
225  ((vector unsigned char) { \
226  0x10, 0x00, 0x10, 0x01, 0x10, 0x02, 0x10, 0x03, \
227  0x10, 0x04, 0x10, 0x05, 0x10, 0x06, 0x10, 0x07 }))
228 
229 #define vec_unl(x) \
230  (vector signed short) \
231  vec_perm(x, (__typeof__(x)) { 0 }, \
232  ((vector unsigned char) { \
233  0x10, 0x08, 0x10, 0x09, 0x10, 0x0A, 0x10, 0x0B, \
234  0x10, 0x0C, 0x10, 0x0D, 0x10, 0x0E, 0x10, 0x0F }))
235 
236 #define vec_clip_s16(x) \
237  vec_max(vec_min(x, ((vector signed short) { \
238  235, 235, 235, 235, 235, 235, 235, 235 })), \
239  ((vector signed short) { 16, 16, 16, 16, 16, 16, 16, 16 }))
240 
241 #define vec_packclp(x, y) \
242  (vector unsigned char) \
243  vec_packs((vector unsigned short) \
244  vec_max(x, ((vector signed short) { 0 })), \
245  (vector unsigned short) \
246  vec_max(y, ((vector signed short) { 0 })))
247 
248 static inline void cvtyuvtoRGB(SwsContext *c, vector signed short Y,
249  vector signed short U, vector signed short V,
250  vector signed short *R, vector signed short *G,
251  vector signed short *B)
252 {
253  vector signed short vx, ux, uvx;
254 
255  Y = vec_mradds(Y, c->CY, c->OY);
256  U = vec_sub(U, (vector signed short)
257  vec_splat((vector signed short) { 128 }, 0));
258  V = vec_sub(V, (vector signed short)
259  vec_splat((vector signed short) { 128 }, 0));
260 
261  // ux = (CBU * (u << c->CSHIFT) + 0x4000) >> 15;
262  ux = vec_sl(U, c->CSHIFT);
263  *B = vec_mradds(ux, c->CBU, Y);
264 
265  // vx = (CRV * (v << c->CSHIFT) + 0x4000) >> 15;
266  vx = vec_sl(V, c->CSHIFT);
267  *R = vec_mradds(vx, c->CRV, Y);
268 
269  // uvx = ((CGU * u) + (CGV * v)) >> 15;
270  uvx = vec_mradds(U, c->CGU, Y);
271  *G = vec_mradds(V, c->CGV, uvx);
272 }
273 
274 /*
275  * ------------------------------------------------------------------------------
276  * CS converters
277  * ------------------------------------------------------------------------------
278  */
279 
280 #define DEFCSP420_CVT(name, out_pixels) \
281 static int altivec_ ## name(SwsContext *c, const unsigned char **in, \
282  int *instrides, int srcSliceY, int srcSliceH, \
283  unsigned char **oplanes, int *outstrides) \
284 { \
285  int w = c->srcW; \
286  int h = srcSliceH; \
287  int i, j; \
288  int instrides_scl[3]; \
289  vector unsigned char y0, y1; \
290  \
291  vector signed char u, v; \
292  \
293  vector signed short Y0, Y1, Y2, Y3; \
294  vector signed short U, V; \
295  vector signed short vx, ux, uvx; \
296  vector signed short vx0, ux0, uvx0; \
297  vector signed short vx1, ux1, uvx1; \
298  vector signed short R0, G0, B0; \
299  vector signed short R1, G1, B1; \
300  vector unsigned char R, G, B; \
301  \
302  const vector unsigned char *y1ivP, *y2ivP, *uivP, *vivP; \
303  vector unsigned char align_perm; \
304  \
305  vector signed short lCY = c->CY; \
306  vector signed short lOY = c->OY; \
307  vector signed short lCRV = c->CRV; \
308  vector signed short lCBU = c->CBU; \
309  vector signed short lCGU = c->CGU; \
310  vector signed short lCGV = c->CGV; \
311  vector unsigned short lCSHIFT = c->CSHIFT; \
312  \
313  const ubyte *y1i = in[0]; \
314  const ubyte *y2i = in[0] + instrides[0]; \
315  const ubyte *ui = in[1]; \
316  const ubyte *vi = in[2]; \
317  \
318  vector unsigned char *oute = \
319  (vector unsigned char *) \
320  (oplanes[0] + srcSliceY * outstrides[0]); \
321  vector unsigned char *outo = \
322  (vector unsigned char *) \
323  (oplanes[0] + srcSliceY * outstrides[0] + outstrides[0]); \
324  \
325  /* loop moves y{1, 2}i by w */ \
326  instrides_scl[0] = instrides[0] * 2 - w; \
327  /* loop moves ui by w / 2 */ \
328  instrides_scl[1] = instrides[1] - w / 2; \
329  /* loop moves vi by w / 2 */ \
330  instrides_scl[2] = instrides[2] - w / 2; \
331  \
332  for (i = 0; i < h / 2; i++) { \
333  vec_dstst(outo, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 0); \
334  vec_dstst(oute, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 1); \
335  \
336  for (j = 0; j < w / 16; j++) { \
337  y1ivP = (const vector unsigned char *) y1i; \
338  y2ivP = (const vector unsigned char *) y2i; \
339  uivP = (const vector unsigned char *) ui; \
340  vivP = (const vector unsigned char *) vi; \
341  \
342  align_perm = vec_lvsl(0, y1i); \
343  y0 = (vector unsigned char) \
344  vec_perm(y1ivP[0], y1ivP[1], align_perm); \
345  \
346  align_perm = vec_lvsl(0, y2i); \
347  y1 = (vector unsigned char) \
348  vec_perm(y2ivP[0], y2ivP[1], align_perm); \
349  \
350  align_perm = vec_lvsl(0, ui); \
351  u = (vector signed char) \
352  vec_perm(uivP[0], uivP[1], align_perm); \
353  \
354  align_perm = vec_lvsl(0, vi); \
355  v = (vector signed char) \
356  vec_perm(vivP[0], vivP[1], align_perm); \
357  \
358  u = (vector signed char) \
359  vec_sub(u, \
360  (vector signed char) \
361  vec_splat((vector signed char) { 128 }, 0)); \
362  v = (vector signed char) \
363  vec_sub(v, \
364  (vector signed char) \
365  vec_splat((vector signed char) { 128 }, 0)); \
366  \
367  U = vec_unpackh(u); \
368  V = vec_unpackh(v); \
369  \
370  Y0 = vec_unh(y0); \
371  Y1 = vec_unl(y0); \
372  Y2 = vec_unh(y1); \
373  Y3 = vec_unl(y1); \
374  \
375  Y0 = vec_mradds(Y0, lCY, lOY); \
376  Y1 = vec_mradds(Y1, lCY, lOY); \
377  Y2 = vec_mradds(Y2, lCY, lOY); \
378  Y3 = vec_mradds(Y3, lCY, lOY); \
379  \
380  /* ux = (CBU * (u << CSHIFT) + 0x4000) >> 15 */ \
381  ux = vec_sl(U, lCSHIFT); \
382  ux = vec_mradds(ux, lCBU, (vector signed short) { 0 }); \
383  ux0 = vec_mergeh(ux, ux); \
384  ux1 = vec_mergel(ux, ux); \
385  \
386  /* vx = (CRV * (v << CSHIFT) + 0x4000) >> 15; */ \
387  vx = vec_sl(V, lCSHIFT); \
388  vx = vec_mradds(vx, lCRV, (vector signed short) { 0 }); \
389  vx0 = vec_mergeh(vx, vx); \
390  vx1 = vec_mergel(vx, vx); \
391  \
392  /* uvx = ((CGU * u) + (CGV * v)) >> 15 */ \
393  uvx = vec_mradds(U, lCGU, (vector signed short) { 0 }); \
394  uvx = vec_mradds(V, lCGV, uvx); \
395  uvx0 = vec_mergeh(uvx, uvx); \
396  uvx1 = vec_mergel(uvx, uvx); \
397  \
398  R0 = vec_add(Y0, vx0); \
399  G0 = vec_add(Y0, uvx0); \
400  B0 = vec_add(Y0, ux0); \
401  R1 = vec_add(Y1, vx1); \
402  G1 = vec_add(Y1, uvx1); \
403  B1 = vec_add(Y1, ux1); \
404  \
405  R = vec_packclp(R0, R1); \
406  G = vec_packclp(G0, G1); \
407  B = vec_packclp(B0, B1); \
408  \
409  out_pixels(R, G, B, oute); \
410  \
411  R0 = vec_add(Y2, vx0); \
412  G0 = vec_add(Y2, uvx0); \
413  B0 = vec_add(Y2, ux0); \
414  R1 = vec_add(Y3, vx1); \
415  G1 = vec_add(Y3, uvx1); \
416  B1 = vec_add(Y3, ux1); \
417  R = vec_packclp(R0, R1); \
418  G = vec_packclp(G0, G1); \
419  B = vec_packclp(B0, B1); \
420  \
421  \
422  out_pixels(R, G, B, outo); \
423  \
424  y1i += 16; \
425  y2i += 16; \
426  ui += 8; \
427  vi += 8; \
428  } \
429  \
430  outo += (outstrides[0]) >> 4; \
431  oute += (outstrides[0]) >> 4; \
432  \
433  ui += instrides_scl[1]; \
434  vi += instrides_scl[2]; \
435  y1i += instrides_scl[0]; \
436  y2i += instrides_scl[0]; \
437  } \
438  return srcSliceH; \
439 }
440 
441 #define out_abgr(a, b, c, ptr) \
442  vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), c, b, a, ptr)
443 #define out_bgra(a, b, c, ptr) \
444  vec_mstrgb32(__typeof__(a), c, b, a, ((__typeof__(a)) { 255 }), ptr)
445 #define out_rgba(a, b, c, ptr) \
446  vec_mstrgb32(__typeof__(a), a, b, c, ((__typeof__(a)) { 255 }), ptr)
447 #define out_argb(a, b, c, ptr) \
448  vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), a, b, c, ptr)
449 #define out_rgb24(a, b, c, ptr) vec_mstrgb24(a, b, c, ptr)
450 #define out_bgr24(a, b, c, ptr) vec_mstbgr24(a, b, c, ptr)
451 
452 DEFCSP420_CVT(yuv2_abgr, out_abgr)
453 DEFCSP420_CVT(yuv2_bgra, out_bgra)
454 DEFCSP420_CVT(yuv2_rgba, out_rgba)
455 DEFCSP420_CVT(yuv2_argb, out_argb)
456 DEFCSP420_CVT(yuv2_rgb24, out_rgb24)
457 DEFCSP420_CVT(yuv2_bgr24, out_bgr24)
458 
459 // uyvy|uyvy|uyvy|uyvy
460 // 0123 4567 89ab cdef
461 static const vector unsigned char
462  demux_u = { 0x10, 0x00, 0x10, 0x00,
463  0x10, 0x04, 0x10, 0x04,
464  0x10, 0x08, 0x10, 0x08,
465  0x10, 0x0c, 0x10, 0x0c },
466  demux_v = { 0x10, 0x02, 0x10, 0x02,
467  0x10, 0x06, 0x10, 0x06,
468  0x10, 0x0A, 0x10, 0x0A,
469  0x10, 0x0E, 0x10, 0x0E },
470  demux_y = { 0x10, 0x01, 0x10, 0x03,
471  0x10, 0x05, 0x10, 0x07,
472  0x10, 0x09, 0x10, 0x0B,
473  0x10, 0x0D, 0x10, 0x0F };
474 
475 /*
476  * this is so I can play live CCIR raw video
477  */
478 static int altivec_uyvy_rgb32(SwsContext *c, const unsigned char **in,
479  int *instrides, int srcSliceY, int srcSliceH,
480  unsigned char **oplanes, int *outstrides)
481 {
482  int w = c->srcW;
483  int h = srcSliceH;
484  int i, j;
485  vector unsigned char uyvy;
486  vector signed short Y, U, V;
487  vector signed short R0, G0, B0, R1, G1, B1;
488  vector unsigned char R, G, B;
489  vector unsigned char *out;
490  const ubyte *img;
491 
492  img = in[0];
493  out = (vector unsigned char *) (oplanes[0] + srcSliceY * outstrides[0]);
494 
495  for (i = 0; i < h; i++)
496  for (j = 0; j < w / 16; j++) {
497  uyvy = vec_ld(0, img);
498 
499  U = (vector signed short)
500  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
501  V = (vector signed short)
502  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
503  Y = (vector signed short)
504  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
505 
506  cvtyuvtoRGB(c, Y, U, V, &R0, &G0, &B0);
507 
508  uyvy = vec_ld(16, img);
509 
510  U = (vector signed short)
511  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
512  V = (vector signed short)
513  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
514  Y = (vector signed short)
515  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
516 
517  cvtyuvtoRGB(c, Y, U, V, &R1, &G1, &B1);
518 
519  R = vec_packclp(R0, R1);
520  G = vec_packclp(G0, G1);
521  B = vec_packclp(B0, B1);
522 
523  // vec_mstbgr24 (R,G,B, out);
524  out_rgba(R, G, B, out);
525 
526  img += 32;
527  }
528  return srcSliceH;
529 }
530 
531 #endif /* HAVE_ALTIVEC */
532 
533 /* Ok currently the acceleration routine only supports
534  * inputs of widths a multiple of 16
535  * and heights a multiple 2
536  *
537  * So we just fall back to the C codes for this.
538  */
540 {
541 #if HAVE_ALTIVEC
543  return NULL;
544 
545  /*
546  * and this seems not to matter too much I tried a bunch of
547  * videos with abnormal widths and MPlayer crashes elsewhere.
548  * mplayer -vo x11 -rawvideo on:w=350:h=240 raw-350x240.eyuv
549  * boom with X11 bad match.
550  *
551  */
552  if ((c->srcW & 0xf) != 0)
553  return NULL;
554 
555  switch (c->srcFormat) {
556  case AV_PIX_FMT_YUV410P:
557  case AV_PIX_FMT_YUV420P:
558  /*case IMGFMT_CLPL: ??? */
559  case AV_PIX_FMT_GRAY8:
560  case AV_PIX_FMT_NV12:
561  case AV_PIX_FMT_NV21:
562  if ((c->srcH & 0x1) != 0)
563  return NULL;
564 
565  switch (c->dstFormat) {
566  case AV_PIX_FMT_RGB24:
567  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGB24\n");
568  return altivec_yuv2_rgb24;
569  case AV_PIX_FMT_BGR24:
570  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGR24\n");
571  return altivec_yuv2_bgr24;
572  case AV_PIX_FMT_ARGB:
573  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ARGB\n");
574  return altivec_yuv2_argb;
575  case AV_PIX_FMT_ABGR:
576  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ABGR\n");
577  return altivec_yuv2_abgr;
578  case AV_PIX_FMT_RGBA:
579  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGBA\n");
580  return altivec_yuv2_rgba;
581  case AV_PIX_FMT_BGRA:
582  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGRA\n");
583  return altivec_yuv2_bgra;
584  default: return NULL;
585  }
586  break;
587 
588  case AV_PIX_FMT_UYVY422:
589  switch (c->dstFormat) {
590  case AV_PIX_FMT_BGR32:
591  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space UYVY -> RGB32\n");
592  return altivec_uyvy_rgb32;
593  default: return NULL;
594  }
595  break;
596  }
597 #endif /* HAVE_ALTIVEC */
598 
599  return NULL;
600 }
601 
603  const int inv_table[4],
604  int brightness,
605  int contrast,
606  int saturation)
607 {
608 #if HAVE_ALTIVEC
609  union {
610  DECLARE_ALIGNED(16, signed short, tmp)[8];
611  vector signed short vec;
612  } buf;
613 
615  return;
616 
617  buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9; // cy
618  buf.tmp[1] = -256 * brightness; // oy
619  buf.tmp[2] = (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16); // crv
620  buf.tmp[3] = (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16); // cbu
621  buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgu
622  buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgv
623 
624  c->CSHIFT = (vector unsigned short) vec_splat_u16(2);
625  c->CY = vec_splat((vector signed short) buf.vec, 0);
626  c->OY = vec_splat((vector signed short) buf.vec, 1);
627  c->CRV = vec_splat((vector signed short) buf.vec, 2);
628  c->CBU = vec_splat((vector signed short) buf.vec, 3);
629  c->CGU = vec_splat((vector signed short) buf.vec, 4);
630  c->CGV = vec_splat((vector signed short) buf.vec, 5);
631  return;
632 #endif /* HAVE_ALTIVEC */
633 }
634 
635 #if HAVE_ALTIVEC
636 
637 static av_always_inline void yuv2packedX_altivec(SwsContext *c,
638  const int16_t *lumFilter,
639  const int16_t **lumSrc,
640  int lumFilterSize,
641  const int16_t *chrFilter,
642  const int16_t **chrUSrc,
643  const int16_t **chrVSrc,
644  int chrFilterSize,
645  const int16_t **alpSrc,
646  uint8_t *dest,
647  int dstW, int dstY,
648  enum AVPixelFormat target)
649 {
650  int i, j;
651  vector signed short X, X0, X1, Y0, U0, V0, Y1, U1, V1, U, V;
652  vector signed short R0, G0, B0, R1, G1, B1;
653 
654  vector unsigned char R, G, B;
655  vector unsigned char *out, *nout;
656 
657  vector signed short RND = vec_splat_s16(1 << 3);
658  vector unsigned short SCL = vec_splat_u16(4);
659  DECLARE_ALIGNED(16, unsigned int, scratch)[16];
660 
661  vector signed short *YCoeffs, *CCoeffs;
662 
663  YCoeffs = c->vYCoeffsBank + dstY * lumFilterSize;
664  CCoeffs = c->vCCoeffsBank + dstY * chrFilterSize;
665 
666  out = (vector unsigned char *) dest;
667 
668  for (i = 0; i < dstW; i += 16) {
669  Y0 = RND;
670  Y1 = RND;
671  /* extract 16 coeffs from lumSrc */
672  for (j = 0; j < lumFilterSize; j++) {
673  X0 = vec_ld(0, &lumSrc[j][i]);
674  X1 = vec_ld(16, &lumSrc[j][i]);
675  Y0 = vec_mradds(X0, YCoeffs[j], Y0);
676  Y1 = vec_mradds(X1, YCoeffs[j], Y1);
677  }
678 
679  U = RND;
680  V = RND;
681  /* extract 8 coeffs from U,V */
682  for (j = 0; j < chrFilterSize; j++) {
683  X = vec_ld(0, &chrUSrc[j][i / 2]);
684  U = vec_mradds(X, CCoeffs[j], U);
685  X = vec_ld(0, &chrVSrc[j][i / 2]);
686  V = vec_mradds(X, CCoeffs[j], V);
687  }
688 
689  /* scale and clip signals */
690  Y0 = vec_sra(Y0, SCL);
691  Y1 = vec_sra(Y1, SCL);
692  U = vec_sra(U, SCL);
693  V = vec_sra(V, SCL);
694 
695  Y0 = vec_clip_s16(Y0);
696  Y1 = vec_clip_s16(Y1);
697  U = vec_clip_s16(U);
698  V = vec_clip_s16(V);
699 
700  /* now we have
701  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
702  * U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
703  *
704  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
705  * U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
706  * V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
707  */
708 
709  U0 = vec_mergeh(U, U);
710  V0 = vec_mergeh(V, V);
711 
712  U1 = vec_mergel(U, U);
713  V1 = vec_mergel(V, V);
714 
715  cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
716  cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
717 
718  R = vec_packclp(R0, R1);
719  G = vec_packclp(G0, G1);
720  B = vec_packclp(B0, B1);
721 
722  switch (target) {
723  case AV_PIX_FMT_ABGR:
724  out_abgr(R, G, B, out);
725  break;
726  case AV_PIX_FMT_BGRA:
727  out_bgra(R, G, B, out);
728  break;
729  case AV_PIX_FMT_RGBA:
730  out_rgba(R, G, B, out);
731  break;
732  case AV_PIX_FMT_ARGB:
733  out_argb(R, G, B, out);
734  break;
735  case AV_PIX_FMT_RGB24:
736  out_rgb24(R, G, B, out);
737  break;
738  case AV_PIX_FMT_BGR24:
739  out_bgr24(R, G, B, out);
740  break;
741  default:
742  {
743  /* If this is reached, the caller should have called yuv2packedXinC
744  * instead. */
745  static int printed_error_message;
746  if (!printed_error_message) {
747  av_log(c, AV_LOG_ERROR,
748  "altivec_yuv2packedX doesn't support %s output\n",
750  printed_error_message = 1;
751  }
752  return;
753  }
754  }
755  }
756 
757  if (i < dstW) {
758  i -= 16;
759 
760  Y0 = RND;
761  Y1 = RND;
762  /* extract 16 coeffs from lumSrc */
763  for (j = 0; j < lumFilterSize; j++) {
764  X0 = vec_ld(0, &lumSrc[j][i]);
765  X1 = vec_ld(16, &lumSrc[j][i]);
766  Y0 = vec_mradds(X0, YCoeffs[j], Y0);
767  Y1 = vec_mradds(X1, YCoeffs[j], Y1);
768  }
769 
770  U = RND;
771  V = RND;
772  /* extract 8 coeffs from U,V */
773  for (j = 0; j < chrFilterSize; j++) {
774  X = vec_ld(0, &chrUSrc[j][i / 2]);
775  U = vec_mradds(X, CCoeffs[j], U);
776  X = vec_ld(0, &chrVSrc[j][i / 2]);
777  V = vec_mradds(X, CCoeffs[j], V);
778  }
779 
780  /* scale and clip signals */
781  Y0 = vec_sra(Y0, SCL);
782  Y1 = vec_sra(Y1, SCL);
783  U = vec_sra(U, SCL);
784  V = vec_sra(V, SCL);
785 
786  Y0 = vec_clip_s16(Y0);
787  Y1 = vec_clip_s16(Y1);
788  U = vec_clip_s16(U);
789  V = vec_clip_s16(V);
790 
791  /* now we have
792  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
793  * U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
794  *
795  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
796  * U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
797  * V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
798  */
799 
800  U0 = vec_mergeh(U, U);
801  V0 = vec_mergeh(V, V);
802 
803  U1 = vec_mergel(U, U);
804  V1 = vec_mergel(V, V);
805 
806  cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
807  cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
808 
809  R = vec_packclp(R0, R1);
810  G = vec_packclp(G0, G1);
811  B = vec_packclp(B0, B1);
812 
813  nout = (vector unsigned char *) scratch;
814  switch (target) {
815  case AV_PIX_FMT_ABGR:
816  out_abgr(R, G, B, nout);
817  break;
818  case AV_PIX_FMT_BGRA:
819  out_bgra(R, G, B, nout);
820  break;
821  case AV_PIX_FMT_RGBA:
822  out_rgba(R, G, B, nout);
823  break;
824  case AV_PIX_FMT_ARGB:
825  out_argb(R, G, B, nout);
826  break;
827  case AV_PIX_FMT_RGB24:
828  out_rgb24(R, G, B, nout);
829  break;
830  case AV_PIX_FMT_BGR24:
831  out_bgr24(R, G, B, nout);
832  break;
833  default:
834  /* Unreachable, I think. */
835  av_log(c, AV_LOG_ERROR,
836  "altivec_yuv2packedX doesn't support %s output\n",
838  return;
839  }
840 
841  memcpy(&((uint32_t *) dest)[i], scratch, (dstW - i) / 4);
842  }
843 }
844 
845 #define YUV2PACKEDX_WRAPPER(suffix, pixfmt) \
846 void ff_yuv2 ## suffix ## _X_altivec(SwsContext *c, \
847  const int16_t *lumFilter, \
848  const int16_t **lumSrc, \
849  int lumFilterSize, \
850  const int16_t *chrFilter, \
851  const int16_t **chrUSrc, \
852  const int16_t **chrVSrc, \
853  int chrFilterSize, \
854  const int16_t **alpSrc, \
855  uint8_t *dest, int dstW, int dstY) \
856 { \
857  yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize, \
858  chrFilter, chrUSrc, chrVSrc, \
859  chrFilterSize, alpSrc, \
860  dest, dstW, dstY, pixfmt); \
861 }
862 
863 YUV2PACKEDX_WRAPPER(abgr, AV_PIX_FMT_ABGR);
864 YUV2PACKEDX_WRAPPER(bgra, AV_PIX_FMT_BGRA);
865 YUV2PACKEDX_WRAPPER(argb, AV_PIX_FMT_ARGB);
866 YUV2PACKEDX_WRAPPER(rgba, AV_PIX_FMT_RGBA);
867 YUV2PACKEDX_WRAPPER(rgb24, AV_PIX_FMT_RGB24);
868 YUV2PACKEDX_WRAPPER(bgr24, AV_PIX_FMT_BGR24);
869 
870 #endif /* HAVE_ALTIVEC */
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:78
#define G
Definition: huffyuv.h:50
const char * sws_format_name(enum AVPixelFormat format)
Definition: utils.c:210
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:55
av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
Definition: vf_drawbox.c:37
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:130
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:61
#define R
Definition: huffyuv.h:51
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
Macro definitions for various function/variable attributes.
int srcH
Height of source luma/alpha planes.
#define B1
Definition: faandct.c:41
uint8_t
#define av_cold
Definition: attributes.h:66
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:91
external api for the swscale stuff
enum AVPixelFormat dstFormat
Destination pixel format.
#define B
Definition: huffyuv.h:49
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:124
#define R0(v, w, x, y, z, i)
Definition: sha.c:54
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:92
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:86
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:89
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:90
as above, but U and V bytes are swapped
Definition: pixfmt.h:87
#define V
Definition: options_table.h:34
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:62
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:244
#define R1
Definition: simple_idct.c:154
NULL
Definition: eval.c:55
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:65
Definition: vf_drawbox.c:37
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:47
av_cold SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:59
Y , 8bpp.
Definition: pixfmt.h:67
enum AVPixelFormat srcFormat
Source pixel format.
static uint8_t tmp[8]
Definition: des.c:38
FILE * out
Definition: movenc.c:54
#define av_always_inline
Definition: attributes.h:40
int srcW
Width of source luma/alpha planes.
AVPixelFormat
Pixel format.
Definition: pixfmt.h:57
#define B0
Definition: faandct.c:40