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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 FFmpeg.
7  *
8  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 #include <assert.h>
93 
94 #include "config.h"
95 #include "libswscale/rgb2rgb.h"
96 #include "libswscale/swscale.h"
98 #include "libavutil/attributes.h"
99 #include "libavutil/cpu.h"
100 #include "libavutil/pixdesc.h"
101 #include "yuv2rgb_altivec.h"
102 
103 #if HAVE_ALTIVEC
104 
105 #undef PROFILE_THE_BEAST
106 #undef INC_SCALING
107 
108 typedef unsigned char ubyte;
109 typedef signed char sbyte;
110 
111 /* RGB interleaver, 16 planar pels 8-bit samples per channel in
112  * homogeneous vector registers x0,x1,x2 are interleaved with the
113  * following technique:
114  *
115  * o0 = vec_mergeh(x0, x1);
116  * o1 = vec_perm(o0, x2, perm_rgb_0);
117  * o2 = vec_perm(o0, x2, perm_rgb_1);
118  * o3 = vec_mergel(x0, x1);
119  * o4 = vec_perm(o3, o2, perm_rgb_2);
120  * o5 = vec_perm(o3, o2, perm_rgb_3);
121  *
122  * perm_rgb_0: o0(RG).h v1(B) --> o1*
123  * 0 1 2 3 4
124  * rgbr|gbrg|brgb|rgbr
125  * 0010 0100 1001 0010
126  * 0102 3145 2673 894A
127  *
128  * perm_rgb_1: o0(RG).h v1(B) --> o2
129  * 0 1 2 3 4
130  * gbrg|brgb|bbbb|bbbb
131  * 0100 1001 1111 1111
132  * B5CD 6EF7 89AB CDEF
133  *
134  * perm_rgb_2: o3(RG).l o2(rgbB.l) --> o4*
135  * 0 1 2 3 4
136  * gbrg|brgb|rgbr|gbrg
137  * 1111 1111 0010 0100
138  * 89AB CDEF 0182 3945
139  *
140  * perm_rgb_2: o3(RG).l o2(rgbB.l) ---> o5*
141  * 0 1 2 3 4
142  * brgb|rgbr|gbrg|brgb
143  * 1001 0010 0100 1001
144  * a67b 89cA BdCD eEFf
145  */
146 static const vector unsigned char
147  perm_rgb_0 = { 0x00, 0x01, 0x10, 0x02, 0x03, 0x11, 0x04, 0x05,
148  0x12, 0x06, 0x07, 0x13, 0x08, 0x09, 0x14, 0x0a },
149  perm_rgb_1 = { 0x0b, 0x15, 0x0c, 0x0d, 0x16, 0x0e, 0x0f, 0x17,
150  0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
151  perm_rgb_2 = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
152  0x00, 0x01, 0x18, 0x02, 0x03, 0x19, 0x04, 0x05 },
153  perm_rgb_3 = { 0x1a, 0x06, 0x07, 0x1b, 0x08, 0x09, 0x1c, 0x0a,
154  0x0b, 0x1d, 0x0c, 0x0d, 0x1e, 0x0e, 0x0f, 0x1f };
155 
156 #define vec_merge3(x2, x1, x0, y0, y1, y2) \
157  do { \
158  __typeof__(x0) o0, o2, o3; \
159  o0 = vec_mergeh(x0, x1); \
160  y0 = vec_perm(o0, x2, perm_rgb_0); \
161  o2 = vec_perm(o0, x2, perm_rgb_1); \
162  o3 = vec_mergel(x0, x1); \
163  y1 = vec_perm(o3, o2, perm_rgb_2); \
164  y2 = vec_perm(o3, o2, perm_rgb_3); \
165  } while (0)
166 
167 #define vec_mstbgr24(x0, x1, x2, ptr) \
168  do { \
169  __typeof__(x0) _0, _1, _2; \
170  vec_merge3(x0, x1, x2, _0, _1, _2); \
171  vec_st(_0, 0, ptr++); \
172  vec_st(_1, 0, ptr++); \
173  vec_st(_2, 0, ptr++); \
174  } while (0)
175 
176 #define vec_mstrgb24(x0, x1, x2, ptr) \
177  do { \
178  __typeof__(x0) _0, _1, _2; \
179  vec_merge3(x2, x1, x0, _0, _1, _2); \
180  vec_st(_0, 0, ptr++); \
181  vec_st(_1, 0, ptr++); \
182  vec_st(_2, 0, ptr++); \
183  } while (0)
184 
185 /* pack the pixels in rgb0 format
186  * msb R
187  * lsb 0
188  */
189 #define vec_mstrgb32(T, x0, x1, x2, x3, ptr) \
190  do { \
191  T _0, _1, _2, _3; \
192  _0 = vec_mergeh(x0, x1); \
193  _1 = vec_mergeh(x2, x3); \
194  _2 = (T) vec_mergeh((vector unsigned short) _0, \
195  (vector unsigned short) _1); \
196  _3 = (T) vec_mergel((vector unsigned short) _0, \
197  (vector unsigned short) _1); \
198  vec_st(_2, 0 * 16, (T *) ptr); \
199  vec_st(_3, 1 * 16, (T *) ptr); \
200  _0 = vec_mergel(x0, x1); \
201  _1 = vec_mergel(x2, x3); \
202  _2 = (T) vec_mergeh((vector unsigned short) _0, \
203  (vector unsigned short) _1); \
204  _3 = (T) vec_mergel((vector unsigned short) _0, \
205  (vector unsigned short) _1); \
206  vec_st(_2, 2 * 16, (T *) ptr); \
207  vec_st(_3, 3 * 16, (T *) ptr); \
208  ptr += 4; \
209  } while (0)
210 
211 /*
212  * 1 0 1.4021 | | Y |
213  * 1 -0.3441 -0.7142 |x| Cb|
214  * 1 1.7718 0 | | Cr|
215  *
216  *
217  * Y: [-128 127]
218  * Cb/Cr : [-128 127]
219  *
220  * typical YUV conversion works on Y: 0-255 this version has been
221  * optimized for JPEG decoding.
222  */
223 
224 #if HAVE_BIGENDIAN
225 #define vec_unh(x) \
226  (vector signed short) \
227  vec_perm(x, (__typeof__(x)) { 0 }, \
228  ((vector unsigned char) { \
229  0x10, 0x00, 0x10, 0x01, 0x10, 0x02, 0x10, 0x03, \
230  0x10, 0x04, 0x10, 0x05, 0x10, 0x06, 0x10, 0x07 }))
231 
232 #define vec_unl(x) \
233  (vector signed short) \
234  vec_perm(x, (__typeof__(x)) { 0 }, \
235  ((vector unsigned char) { \
236  0x10, 0x08, 0x10, 0x09, 0x10, 0x0A, 0x10, 0x0B, \
237  0x10, 0x0C, 0x10, 0x0D, 0x10, 0x0E, 0x10, 0x0F }))
238 #else
239 #define vec_unh(x)(vector signed short) vec_mergeh(x,(__typeof__(x)) { 0 })
240 #define vec_unl(x)(vector signed short) vec_mergel(x,(__typeof__(x)) { 0 })
241 #endif
242 
243 #define vec_clip_s16(x) \
244  vec_max(vec_min(x, ((vector signed short) { \
245  235, 235, 235, 235, 235, 235, 235, 235 })), \
246  ((vector signed short) { 16, 16, 16, 16, 16, 16, 16, 16 }))
247 
248 #define vec_packclp(x, y) \
249  (vector unsigned char) \
250  vec_packs((vector unsigned short) \
251  vec_max(x, ((vector signed short) { 0 })), \
252  (vector unsigned short) \
253  vec_max(y, ((vector signed short) { 0 })))
254 
255 static inline void cvtyuvtoRGB(SwsContext *c, vector signed short Y,
256  vector signed short U, vector signed short V,
257  vector signed short *R, vector signed short *G,
258  vector signed short *B)
259 {
260  vector signed short vx, ux, uvx;
261 
262  Y = vec_mradds(Y, c->CY, c->OY);
263  U = vec_sub(U, (vector signed short)
264  vec_splat((vector signed short) { 128 }, 0));
265  V = vec_sub(V, (vector signed short)
266  vec_splat((vector signed short) { 128 }, 0));
267 
268  // ux = (CBU * (u << c->CSHIFT) + 0x4000) >> 15;
269  ux = vec_sl(U, c->CSHIFT);
270  *B = vec_mradds(ux, c->CBU, Y);
271 
272  // vx = (CRV * (v << c->CSHIFT) + 0x4000) >> 15;
273  vx = vec_sl(V, c->CSHIFT);
274  *R = vec_mradds(vx, c->CRV, Y);
275 
276  // uvx = ((CGU * u) + (CGV * v)) >> 15;
277  uvx = vec_mradds(U, c->CGU, Y);
278  *G = vec_mradds(V, c->CGV, uvx);
279 }
280 
281 /*
282  * ------------------------------------------------------------------------------
283  * CS converters
284  * ------------------------------------------------------------------------------
285  */
286 
287 #define DEFCSP420_CVT(name, out_pixels) \
288 static int altivec_ ## name(SwsContext *c, const unsigned char **in, \
289  int *instrides, int srcSliceY, int srcSliceH, \
290  unsigned char **oplanes, int *outstrides) \
291 { \
292  int w = c->srcW; \
293  int h = srcSliceH; \
294  int i, j; \
295  int instrides_scl[3]; \
296  vector unsigned char y0, y1; \
297  \
298  vector signed char u, v; \
299  \
300  vector signed short Y0, Y1, Y2, Y3; \
301  vector signed short U, V; \
302  vector signed short vx, ux, uvx; \
303  vector signed short vx0, ux0, uvx0; \
304  vector signed short vx1, ux1, uvx1; \
305  vector signed short R0, G0, B0; \
306  vector signed short R1, G1, B1; \
307  vector unsigned char R, G, B; \
308  \
309  const vector unsigned char *y1ivP, *y2ivP, *uivP, *vivP; \
310  vector unsigned char align_perm; \
311  \
312  vector signed short lCY = c->CY; \
313  vector signed short lOY = c->OY; \
314  vector signed short lCRV = c->CRV; \
315  vector signed short lCBU = c->CBU; \
316  vector signed short lCGU = c->CGU; \
317  vector signed short lCGV = c->CGV; \
318  vector unsigned short lCSHIFT = c->CSHIFT; \
319  \
320  const ubyte *y1i = in[0]; \
321  const ubyte *y2i = in[0] + instrides[0]; \
322  const ubyte *ui = in[1]; \
323  const ubyte *vi = in[2]; \
324  \
325  vector unsigned char *oute, *outo; \
326  \
327  /* loop moves y{1, 2}i by w */ \
328  instrides_scl[0] = instrides[0] * 2 - w; \
329  /* loop moves ui by w / 2 */ \
330  instrides_scl[1] = instrides[1] - w / 2; \
331  /* loop moves vi by w / 2 */ \
332  instrides_scl[2] = instrides[2] - w / 2; \
333  \
334  for (i = 0; i < h / 2; i++) { \
335  oute = (vector unsigned char *)(oplanes[0] + outstrides[0] * \
336  (srcSliceY + i * 2)); \
337  outo = oute + (outstrides[0] >> 4); \
338  vec_dstst(outo, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 0); \
339  vec_dstst(oute, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 1); \
340  \
341  for (j = 0; j < w / 16; j++) { \
342  y1ivP = (const vector unsigned char *) y1i; \
343  y2ivP = (const vector unsigned char *) y2i; \
344  uivP = (const vector unsigned char *) ui; \
345  vivP = (const vector unsigned char *) vi; \
346  \
347  align_perm = vec_lvsl(0, y1i); \
348  y0 = (vector unsigned char) \
349  vec_perm(y1ivP[0], y1ivP[1], align_perm); \
350  \
351  align_perm = vec_lvsl(0, y2i); \
352  y1 = (vector unsigned char) \
353  vec_perm(y2ivP[0], y2ivP[1], align_perm); \
354  \
355  align_perm = vec_lvsl(0, ui); \
356  u = (vector signed char) \
357  vec_perm(uivP[0], uivP[1], align_perm); \
358  \
359  align_perm = vec_lvsl(0, vi); \
360  v = (vector signed char) \
361  vec_perm(vivP[0], vivP[1], align_perm); \
362  \
363  u = (vector signed char) \
364  vec_sub(u, \
365  (vector signed char) \
366  vec_splat((vector signed char) { 128 }, 0)); \
367  v = (vector signed char) \
368  vec_sub(v, \
369  (vector signed char) \
370  vec_splat((vector signed char) { 128 }, 0)); \
371  \
372  U = vec_unpackh(u); \
373  V = vec_unpackh(v); \
374  \
375  Y0 = vec_unh(y0); \
376  Y1 = vec_unl(y0); \
377  Y2 = vec_unh(y1); \
378  Y3 = vec_unl(y1); \
379  \
380  Y0 = vec_mradds(Y0, lCY, lOY); \
381  Y1 = vec_mradds(Y1, lCY, lOY); \
382  Y2 = vec_mradds(Y2, lCY, lOY); \
383  Y3 = vec_mradds(Y3, lCY, lOY); \
384  \
385  /* ux = (CBU * (u << CSHIFT) + 0x4000) >> 15 */ \
386  ux = vec_sl(U, lCSHIFT); \
387  ux = vec_mradds(ux, lCBU, (vector signed short) { 0 }); \
388  ux0 = vec_mergeh(ux, ux); \
389  ux1 = vec_mergel(ux, ux); \
390  \
391  /* vx = (CRV * (v << CSHIFT) + 0x4000) >> 15; */ \
392  vx = vec_sl(V, lCSHIFT); \
393  vx = vec_mradds(vx, lCRV, (vector signed short) { 0 }); \
394  vx0 = vec_mergeh(vx, vx); \
395  vx1 = vec_mergel(vx, vx); \
396  \
397  /* uvx = ((CGU * u) + (CGV * v)) >> 15 */ \
398  uvx = vec_mradds(U, lCGU, (vector signed short) { 0 }); \
399  uvx = vec_mradds(V, lCGV, uvx); \
400  uvx0 = vec_mergeh(uvx, uvx); \
401  uvx1 = vec_mergel(uvx, uvx); \
402  \
403  R0 = vec_add(Y0, vx0); \
404  G0 = vec_add(Y0, uvx0); \
405  B0 = vec_add(Y0, ux0); \
406  R1 = vec_add(Y1, vx1); \
407  G1 = vec_add(Y1, uvx1); \
408  B1 = vec_add(Y1, ux1); \
409  \
410  R = vec_packclp(R0, R1); \
411  G = vec_packclp(G0, G1); \
412  B = vec_packclp(B0, B1); \
413  \
414  out_pixels(R, G, B, oute); \
415  \
416  R0 = vec_add(Y2, vx0); \
417  G0 = vec_add(Y2, uvx0); \
418  B0 = vec_add(Y2, ux0); \
419  R1 = vec_add(Y3, vx1); \
420  G1 = vec_add(Y3, uvx1); \
421  B1 = vec_add(Y3, ux1); \
422  R = vec_packclp(R0, R1); \
423  G = vec_packclp(G0, G1); \
424  B = vec_packclp(B0, B1); \
425  \
426  \
427  out_pixels(R, G, B, outo); \
428  \
429  y1i += 16; \
430  y2i += 16; \
431  ui += 8; \
432  vi += 8; \
433  } \
434  \
435  ui += instrides_scl[1]; \
436  vi += instrides_scl[2]; \
437  y1i += instrides_scl[0]; \
438  y2i += instrides_scl[0]; \
439  } \
440  return srcSliceH; \
441 }
442 
443 #define out_abgr(a, b, c, ptr) \
444  vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), c, b, a, ptr)
445 #define out_bgra(a, b, c, ptr) \
446  vec_mstrgb32(__typeof__(a), c, b, a, ((__typeof__(a)) { 255 }), ptr)
447 #define out_rgba(a, b, c, ptr) \
448  vec_mstrgb32(__typeof__(a), a, b, c, ((__typeof__(a)) { 255 }), ptr)
449 #define out_argb(a, b, c, ptr) \
450  vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), a, b, c, ptr)
451 #define out_rgb24(a, b, c, ptr) vec_mstrgb24(a, b, c, ptr)
452 #define out_bgr24(a, b, c, ptr) vec_mstbgr24(a, b, c, ptr)
453 
454 DEFCSP420_CVT(yuv2_abgr, out_abgr)
455 DEFCSP420_CVT(yuv2_bgra, out_bgra)
456 DEFCSP420_CVT(yuv2_rgba, out_rgba)
457 DEFCSP420_CVT(yuv2_argb, out_argb)
458 DEFCSP420_CVT(yuv2_rgb24, out_rgb24)
459 DEFCSP420_CVT(yuv2_bgr24, out_bgr24)
460 
461 // uyvy|uyvy|uyvy|uyvy
462 // 0123 4567 89ab cdef
463 static const vector unsigned char
464  demux_u = { 0x10, 0x00, 0x10, 0x00,
465  0x10, 0x04, 0x10, 0x04,
466  0x10, 0x08, 0x10, 0x08,
467  0x10, 0x0c, 0x10, 0x0c },
468  demux_v = { 0x10, 0x02, 0x10, 0x02,
469  0x10, 0x06, 0x10, 0x06,
470  0x10, 0x0A, 0x10, 0x0A,
471  0x10, 0x0E, 0x10, 0x0E },
472  demux_y = { 0x10, 0x01, 0x10, 0x03,
473  0x10, 0x05, 0x10, 0x07,
474  0x10, 0x09, 0x10, 0x0B,
475  0x10, 0x0D, 0x10, 0x0F };
476 
477 /*
478  * this is so I can play live CCIR raw video
479  */
480 static int altivec_uyvy_rgb32(SwsContext *c, const unsigned char **in,
481  int *instrides, int srcSliceY, int srcSliceH,
482  unsigned char **oplanes, int *outstrides)
483 {
484  int w = c->srcW;
485  int h = srcSliceH;
486  int i, j;
487  vector unsigned char uyvy;
488  vector signed short Y, U, V;
489  vector signed short R0, G0, B0, R1, G1, B1;
490  vector unsigned char R, G, B;
491  vector unsigned char *out;
492  const ubyte *img;
493 
494  img = in[0];
495  out = (vector unsigned char *) (oplanes[0] + srcSliceY * outstrides[0]);
496 
497  for (i = 0; i < h; i++)
498  for (j = 0; j < w / 16; j++) {
499  uyvy = vec_ld(0, img);
500 
501  U = (vector signed short)
502  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
503  V = (vector signed short)
504  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
505  Y = (vector signed short)
506  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
507 
508  cvtyuvtoRGB(c, Y, U, V, &R0, &G0, &B0);
509 
510  uyvy = vec_ld(16, img);
511 
512  U = (vector signed short)
513  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
514  V = (vector signed short)
515  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
516  Y = (vector signed short)
517  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
518 
519  cvtyuvtoRGB(c, Y, U, V, &R1, &G1, &B1);
520 
521  R = vec_packclp(R0, R1);
522  G = vec_packclp(G0, G1);
523  B = vec_packclp(B0, B1);
524 
525  // vec_mstbgr24 (R,G,B, out);
526  out_rgba(R, G, B, out);
527 
528  img += 32;
529  }
530  return srcSliceH;
531 }
532 
533 #endif /* HAVE_ALTIVEC */
534 
535 /* Ok currently the acceleration routine only supports
536  * inputs of widths a multiple of 16
537  * and heights a multiple 2
538  *
539  * So we just fall back to the C codes for this.
540  */
542 {
543 #if HAVE_ALTIVEC
545  return NULL;
546 
547  /*
548  * and this seems not to matter too much I tried a bunch of
549  * videos with abnormal widths and MPlayer crashes elsewhere.
550  * mplayer -vo x11 -rawvideo on:w=350:h=240 raw-350x240.eyuv
551  * boom with X11 bad match.
552  *
553  */
554  if ((c->srcW & 0xf) != 0)
555  return NULL;
556 
557  switch (c->srcFormat) {
558  case AV_PIX_FMT_YUV410P:
559  case AV_PIX_FMT_YUV420P:
560  /*case IMGFMT_CLPL: ??? */
561  case AV_PIX_FMT_GRAY8:
562  case AV_PIX_FMT_NV12:
563  case AV_PIX_FMT_NV21:
564  if ((c->srcH & 0x1) != 0)
565  return NULL;
566 
567  switch (c->dstFormat) {
568  case AV_PIX_FMT_RGB24:
569  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGB24\n");
570  return altivec_yuv2_rgb24;
571  case AV_PIX_FMT_BGR24:
572  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGR24\n");
573  return altivec_yuv2_bgr24;
574  case AV_PIX_FMT_ARGB:
575  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ARGB\n");
576  return altivec_yuv2_argb;
577  case AV_PIX_FMT_ABGR:
578  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ABGR\n");
579  return altivec_yuv2_abgr;
580  case AV_PIX_FMT_RGBA:
581  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGBA\n");
582  return altivec_yuv2_rgba;
583  case AV_PIX_FMT_BGRA:
584  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGRA\n");
585  return altivec_yuv2_bgra;
586  default: return NULL;
587  }
588  break;
589 
590  case AV_PIX_FMT_UYVY422:
591  switch (c->dstFormat) {
592  case AV_PIX_FMT_BGR32:
593  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space UYVY -> RGB32\n");
594  return altivec_uyvy_rgb32;
595  default: return NULL;
596  }
597  break;
598  }
599 #endif /* HAVE_ALTIVEC */
600 
601  return NULL;
602 }
603 
605  const int inv_table[4],
606  int brightness,
607  int contrast,
608  int saturation)
609 {
610 #if HAVE_ALTIVEC
611  union {
612  DECLARE_ALIGNED(16, signed short, tmp)[8];
613  vector signed short vec;
614  } buf;
615 
617  return;
618 
619  buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9; // cy
620  buf.tmp[1] = -256 * brightness; // oy
621  buf.tmp[2] = (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16); // crv
622  buf.tmp[3] = (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16); // cbu
623  buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgu
624  buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgv
625 
626  c->CSHIFT = (vector unsigned short) vec_splat_u16(2);
627  c->CY = vec_splat((vector signed short) buf.vec, 0);
628  c->OY = vec_splat((vector signed short) buf.vec, 1);
629  c->CRV = vec_splat((vector signed short) buf.vec, 2);
630  c->CBU = vec_splat((vector signed short) buf.vec, 3);
631  c->CGU = vec_splat((vector signed short) buf.vec, 4);
632  c->CGV = vec_splat((vector signed short) buf.vec, 5);
633  return;
634 #endif /* HAVE_ALTIVEC */
635 }
636 
637 #if HAVE_ALTIVEC
638 
639 static av_always_inline void yuv2packedX_altivec(SwsContext *c,
640  const int16_t *lumFilter,
641  const int16_t **lumSrc,
642  int lumFilterSize,
643  const int16_t *chrFilter,
644  const int16_t **chrUSrc,
645  const int16_t **chrVSrc,
646  int chrFilterSize,
647  const int16_t **alpSrc,
648  uint8_t *dest,
649  int dstW, int dstY,
650  enum AVPixelFormat target)
651 {
652  int i, j;
653  vector signed short X, X0, X1, Y0, U0, V0, Y1, U1, V1, U, V;
654  vector signed short R0, G0, B0, R1, G1, B1;
655 
656  vector unsigned char R, G, B;
657  vector unsigned char *out, *nout;
658 
659  vector signed short RND = vec_splat_s16(1 << 3);
660  vector unsigned short SCL = vec_splat_u16(4);
661  DECLARE_ALIGNED(16, unsigned int, scratch)[16];
662 
663  vector signed short *YCoeffs, *CCoeffs;
664 
665  YCoeffs = c->vYCoeffsBank + dstY * lumFilterSize;
666  CCoeffs = c->vCCoeffsBank + dstY * chrFilterSize;
667 
668  out = (vector unsigned char *) dest;
669 
670  for (i = 0; i < dstW; i += 16) {
671  Y0 = RND;
672  Y1 = RND;
673  /* extract 16 coeffs from lumSrc */
674  for (j = 0; j < lumFilterSize; j++) {
675  X0 = vec_ld(0, &lumSrc[j][i]);
676  X1 = vec_ld(16, &lumSrc[j][i]);
677  Y0 = vec_mradds(X0, YCoeffs[j], Y0);
678  Y1 = vec_mradds(X1, YCoeffs[j], Y1);
679  }
680 
681  U = RND;
682  V = RND;
683  /* extract 8 coeffs from U,V */
684  for (j = 0; j < chrFilterSize; j++) {
685  X = vec_ld(0, &chrUSrc[j][i / 2]);
686  U = vec_mradds(X, CCoeffs[j], U);
687  X = vec_ld(0, &chrVSrc[j][i / 2]);
688  V = vec_mradds(X, CCoeffs[j], V);
689  }
690 
691  /* scale and clip signals */
692  Y0 = vec_sra(Y0, SCL);
693  Y1 = vec_sra(Y1, SCL);
694  U = vec_sra(U, SCL);
695  V = vec_sra(V, SCL);
696 
697  Y0 = vec_clip_s16(Y0);
698  Y1 = vec_clip_s16(Y1);
699  U = vec_clip_s16(U);
700  V = vec_clip_s16(V);
701 
702  /* now we have
703  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
704  * U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
705  *
706  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
707  * U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
708  * V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
709  */
710 
711  U0 = vec_mergeh(U, U);
712  V0 = vec_mergeh(V, V);
713 
714  U1 = vec_mergel(U, U);
715  V1 = vec_mergel(V, V);
716 
717  cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
718  cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
719 
720  R = vec_packclp(R0, R1);
721  G = vec_packclp(G0, G1);
722  B = vec_packclp(B0, B1);
723 
724  switch (target) {
725  case AV_PIX_FMT_ABGR:
726  out_abgr(R, G, B, out);
727  break;
728  case AV_PIX_FMT_BGRA:
729  out_bgra(R, G, B, out);
730  break;
731  case AV_PIX_FMT_RGBA:
732  out_rgba(R, G, B, out);
733  break;
734  case AV_PIX_FMT_ARGB:
735  out_argb(R, G, B, out);
736  break;
737  case AV_PIX_FMT_RGB24:
738  out_rgb24(R, G, B, out);
739  break;
740  case AV_PIX_FMT_BGR24:
741  out_bgr24(R, G, B, out);
742  break;
743  default:
744  {
745  /* If this is reached, the caller should have called yuv2packedXinC
746  * instead. */
747  static int printed_error_message;
748  if (!printed_error_message) {
749  av_log(c, AV_LOG_ERROR,
750  "altivec_yuv2packedX doesn't support %s output\n",
752  printed_error_message = 1;
753  }
754  return;
755  }
756  }
757  }
758 
759  if (i < dstW) {
760  i -= 16;
761 
762  Y0 = RND;
763  Y1 = RND;
764  /* extract 16 coeffs from lumSrc */
765  for (j = 0; j < lumFilterSize; j++) {
766  X0 = vec_ld(0, &lumSrc[j][i]);
767  X1 = vec_ld(16, &lumSrc[j][i]);
768  Y0 = vec_mradds(X0, YCoeffs[j], Y0);
769  Y1 = vec_mradds(X1, YCoeffs[j], Y1);
770  }
771 
772  U = RND;
773  V = RND;
774  /* extract 8 coeffs from U,V */
775  for (j = 0; j < chrFilterSize; j++) {
776  X = vec_ld(0, &chrUSrc[j][i / 2]);
777  U = vec_mradds(X, CCoeffs[j], U);
778  X = vec_ld(0, &chrVSrc[j][i / 2]);
779  V = vec_mradds(X, CCoeffs[j], V);
780  }
781 
782  /* scale and clip signals */
783  Y0 = vec_sra(Y0, SCL);
784  Y1 = vec_sra(Y1, SCL);
785  U = vec_sra(U, SCL);
786  V = vec_sra(V, SCL);
787 
788  Y0 = vec_clip_s16(Y0);
789  Y1 = vec_clip_s16(Y1);
790  U = vec_clip_s16(U);
791  V = vec_clip_s16(V);
792 
793  /* now we have
794  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
795  * U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
796  *
797  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
798  * U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
799  * V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
800  */
801 
802  U0 = vec_mergeh(U, U);
803  V0 = vec_mergeh(V, V);
804 
805  U1 = vec_mergel(U, U);
806  V1 = vec_mergel(V, V);
807 
808  cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
809  cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
810 
811  R = vec_packclp(R0, R1);
812  G = vec_packclp(G0, G1);
813  B = vec_packclp(B0, B1);
814 
815  nout = (vector unsigned char *) scratch;
816  switch (target) {
817  case AV_PIX_FMT_ABGR:
818  out_abgr(R, G, B, nout);
819  break;
820  case AV_PIX_FMT_BGRA:
821  out_bgra(R, G, B, nout);
822  break;
823  case AV_PIX_FMT_RGBA:
824  out_rgba(R, G, B, nout);
825  break;
826  case AV_PIX_FMT_ARGB:
827  out_argb(R, G, B, nout);
828  break;
829  case AV_PIX_FMT_RGB24:
830  out_rgb24(R, G, B, nout);
831  break;
832  case AV_PIX_FMT_BGR24:
833  out_bgr24(R, G, B, nout);
834  break;
835  default:
836  /* Unreachable, I think. */
837  av_log(c, AV_LOG_ERROR,
838  "altivec_yuv2packedX doesn't support %s output\n",
840  return;
841  }
842 
843  memcpy(&((uint32_t *) dest)[i], scratch, (dstW - i) / 4);
844  }
845 }
846 
847 #define YUV2PACKEDX_WRAPPER(suffix, pixfmt) \
848 void ff_yuv2 ## suffix ## _X_altivec(SwsContext *c, \
849  const int16_t *lumFilter, \
850  const int16_t **lumSrc, \
851  int lumFilterSize, \
852  const int16_t *chrFilter, \
853  const int16_t **chrUSrc, \
854  const int16_t **chrVSrc, \
855  int chrFilterSize, \
856  const int16_t **alpSrc, \
857  uint8_t *dest, int dstW, int dstY) \
858 { \
859  yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize, \
860  chrFilter, chrUSrc, chrVSrc, \
861  chrFilterSize, alpSrc, \
862  dest, dstW, dstY, pixfmt); \
863 }
864 
865 YUV2PACKEDX_WRAPPER(abgr, AV_PIX_FMT_ABGR);
866 YUV2PACKEDX_WRAPPER(bgra, AV_PIX_FMT_BGRA);
867 YUV2PACKEDX_WRAPPER(argb, AV_PIX_FMT_ARGB);
868 YUV2PACKEDX_WRAPPER(rgba, AV_PIX_FMT_RGBA);
869 YUV2PACKEDX_WRAPPER(rgb24, AV_PIX_FMT_RGB24);
870 YUV2PACKEDX_WRAPPER(bgr24, AV_PIX_FMT_BGR24);
871 
872 #endif /* HAVE_ALTIVEC */
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:82
#define NULL
Definition: coverity.c:32
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:56
av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
Macro definitions for various function/variable attributes.
int srcH
Height of source luma/alpha planes.
#define B1
Definition: faandct.c:41
#define img
uint8_t
#define av_cold
Definition: attributes.h:82
#define Y
Definition: vf_boxblur.c:76
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:95
Definition: vf_geq.c:46
external API header
enum AVPixelFormat dstFormat
Destination pixel format.
#define av_log(a,...)
#define U(x)
Definition: vp56_arith.h:37
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define R0(v, w, x, y, z, i)
Definition: sha.c:56
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:96
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:90
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:93
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94
as above, but U and V bytes are swapped
Definition: pixfmt.h:91
static uint8_t tmp[8]
Definition: des-test.c:38
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
FILE * out
Definition: movenc-test.c:54
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:317
#define R1
Definition: simple_idct.c:163
Definition: vf_geq.c:46
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
void * buf
Definition: avisynth_c.h:553
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
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:62
Y , 8bpp.
Definition: pixfmt.h:70
static double c[64]
enum AVPixelFormat srcFormat
Source pixel format.
Definition: vf_geq.c:46
#define av_always_inline
Definition: attributes.h:39
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2109
int srcW
Width of source luma/alpha planes.
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
#define B0
Definition: faandct.c:40
#define V
Definition: avdct.c:30