FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
yuv2rgb_altivec.c
Go to the documentation of this file.
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 
93 #include "config.h"
94 #include "libswscale/rgb2rgb.h"
95 #include "libswscale/swscale.h"
96 #include "libswscale/swscale_internal.h"
97 #include "libavutil/attributes.h"
98 #include "libavutil/cpu.h"
99 #include "libavutil/pixdesc.h"
100 #include "yuv2rgb_altivec.h"
101 
102 #if HAVE_ALTIVEC
103 
104 #undef PROFILE_THE_BEAST
105 #undef INC_SCALING
106 
107 typedef unsigned char ubyte;
108 typedef signed char sbyte;
109 
110 /* RGB interleaver, 16 planar pels 8-bit samples per channel in
111  * homogeneous vector registers x0,x1,x2 are interleaved with the
112  * following technique:
113  *
114  * o0 = vec_mergeh(x0, x1);
115  * o1 = vec_perm(o0, x2, perm_rgb_0);
116  * o2 = vec_perm(o0, x2, perm_rgb_1);
117  * o3 = vec_mergel(x0, x1);
118  * o4 = vec_perm(o3, o2, perm_rgb_2);
119  * o5 = vec_perm(o3, o2, perm_rgb_3);
120  *
121  * perm_rgb_0: o0(RG).h v1(B) --> o1*
122  * 0 1 2 3 4
123  * rgbr|gbrg|brgb|rgbr
124  * 0010 0100 1001 0010
125  * 0102 3145 2673 894A
126  *
127  * perm_rgb_1: o0(RG).h v1(B) --> o2
128  * 0 1 2 3 4
129  * gbrg|brgb|bbbb|bbbb
130  * 0100 1001 1111 1111
131  * B5CD 6EF7 89AB CDEF
132  *
133  * perm_rgb_2: o3(RG).l o2(rgbB.l) --> o4*
134  * 0 1 2 3 4
135  * gbrg|brgb|rgbr|gbrg
136  * 1111 1111 0010 0100
137  * 89AB CDEF 0182 3945
138  *
139  * perm_rgb_2: o3(RG).l o2(rgbB.l) ---> o5*
140  * 0 1 2 3 4
141  * brgb|rgbr|gbrg|brgb
142  * 1001 0010 0100 1001
143  * a67b 89cA BdCD eEFf
144  */
145 static const vector unsigned char
146  perm_rgb_0 = { 0x00, 0x01, 0x10, 0x02, 0x03, 0x11, 0x04, 0x05,
147  0x12, 0x06, 0x07, 0x13, 0x08, 0x09, 0x14, 0x0a },
148  perm_rgb_1 = { 0x0b, 0x15, 0x0c, 0x0d, 0x16, 0x0e, 0x0f, 0x17,
149  0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
150  perm_rgb_2 = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
151  0x00, 0x01, 0x18, 0x02, 0x03, 0x19, 0x04, 0x05 },
152  perm_rgb_3 = { 0x1a, 0x06, 0x07, 0x1b, 0x08, 0x09, 0x1c, 0x0a,
153  0x0b, 0x1d, 0x0c, 0x0d, 0x1e, 0x0e, 0x0f, 0x1f };
154 
155 #define vec_merge3(x2, x1, x0, y0, y1, y2) \
156  do { \
157  __typeof__(x0) o0, o2, o3; \
158  o0 = vec_mergeh(x0, x1); \
159  y0 = vec_perm(o0, x2, perm_rgb_0); \
160  o2 = vec_perm(o0, x2, perm_rgb_1); \
161  o3 = vec_mergel(x0, x1); \
162  y1 = vec_perm(o3, o2, perm_rgb_2); \
163  y2 = vec_perm(o3, o2, perm_rgb_3); \
164  } while (0)
165 
166 #define vec_mstbgr24(x0, x1, x2, ptr) \
167  do { \
168  __typeof__(x0) _0, _1, _2; \
169  vec_merge3(x0, x1, x2, _0, _1, _2); \
170  vec_st(_0, 0, ptr++); \
171  vec_st(_1, 0, ptr++); \
172  vec_st(_2, 0, ptr++); \
173  } while (0)
174 
175 #define vec_mstrgb24(x0, x1, x2, ptr) \
176  do { \
177  __typeof__(x0) _0, _1, _2; \
178  vec_merge3(x2, x1, x0, _0, _1, _2); \
179  vec_st(_0, 0, ptr++); \
180  vec_st(_1, 0, ptr++); \
181  vec_st(_2, 0, ptr++); \
182  } while (0)
183 
184 /* pack the pixels in rgb0 format
185  * msb R
186  * lsb 0
187  */
188 #define vec_mstrgb32(T, x0, x1, x2, x3, ptr) \
189  do { \
190  T _0, _1, _2, _3; \
191  _0 = vec_mergeh(x0, x1); \
192  _1 = vec_mergeh(x2, x3); \
193  _2 = (T) vec_mergeh((vector unsigned short) _0, \
194  (vector unsigned short) _1); \
195  _3 = (T) vec_mergel((vector unsigned short) _0, \
196  (vector unsigned short) _1); \
197  vec_st(_2, 0 * 16, (T *) ptr); \
198  vec_st(_3, 1 * 16, (T *) ptr); \
199  _0 = vec_mergel(x0, x1); \
200  _1 = vec_mergel(x2, x3); \
201  _2 = (T) vec_mergeh((vector unsigned short) _0, \
202  (vector unsigned short) _1); \
203  _3 = (T) vec_mergel((vector unsigned short) _0, \
204  (vector unsigned short) _1); \
205  vec_st(_2, 2 * 16, (T *) ptr); \
206  vec_st(_3, 3 * 16, (T *) ptr); \
207  ptr += 4; \
208  } while (0)
209 
210 /*
211  * 1 0 1.4021 | | Y |
212  * 1 -0.3441 -0.7142 |x| Cb|
213  * 1 1.7718 0 | | Cr|
214  *
215  *
216  * Y: [-128 127]
217  * Cb/Cr : [-128 127]
218  *
219  * typical YUV conversion works on Y: 0-255 this version has been
220  * optimized for JPEG decoding.
221  */
222 
223 #if HAVE_BIGENDIAN
224 #define vec_unh(x) \
225  (vector signed short) \
226  vec_perm(x, (__typeof__(x)) { 0 }, \
227  ((vector unsigned char) { \
228  0x10, 0x00, 0x10, 0x01, 0x10, 0x02, 0x10, 0x03, \
229  0x10, 0x04, 0x10, 0x05, 0x10, 0x06, 0x10, 0x07 }))
230 
231 #define vec_unl(x) \
232  (vector signed short) \
233  vec_perm(x, (__typeof__(x)) { 0 }, \
234  ((vector unsigned char) { \
235  0x10, 0x08, 0x10, 0x09, 0x10, 0x0A, 0x10, 0x0B, \
236  0x10, 0x0C, 0x10, 0x0D, 0x10, 0x0E, 0x10, 0x0F }))
237 #else
238 #define vec_unh(x)(vector signed short) vec_mergeh(x,(__typeof__(x)) { 0 })
239 #define vec_unl(x)(vector signed short) vec_mergel(x,(__typeof__(x)) { 0 })
240 #endif
241 
242 #define vec_clip_s16(x) \
243  vec_max(vec_min(x, ((vector signed short) { \
244  235, 235, 235, 235, 235, 235, 235, 235 })), \
245  ((vector signed short) { 16, 16, 16, 16, 16, 16, 16, 16 }))
246 
247 #define vec_packclp(x, y) \
248  (vector unsigned char) \
249  vec_packs((vector unsigned short) \
250  vec_max(x, ((vector signed short) { 0 })), \
251  (vector unsigned short) \
252  vec_max(y, ((vector signed short) { 0 })))
253 
254 static inline void cvtyuvtoRGB(SwsContext *c, vector signed short Y,
255  vector signed short U, vector signed short V,
256  vector signed short *R, vector signed short *G,
257  vector signed short *B)
258 {
259  vector signed short vx, ux, uvx;
260 
261  Y = vec_mradds(Y, c->CY, c->OY);
262  U = vec_sub(U, (vector signed short)
263  vec_splat((vector signed short) { 128 }, 0));
264  V = vec_sub(V, (vector signed short)
265  vec_splat((vector signed short) { 128 }, 0));
266 
267  // ux = (CBU * (u << c->CSHIFT) + 0x4000) >> 15;
268  ux = vec_sl(U, c->CSHIFT);
269  *B = vec_mradds(ux, c->CBU, Y);
270 
271  // vx = (CRV * (v << c->CSHIFT) + 0x4000) >> 15;
272  vx = vec_sl(V, c->CSHIFT);
273  *R = vec_mradds(vx, c->CRV, Y);
274 
275  // uvx = ((CGU * u) + (CGV * v)) >> 15;
276  uvx = vec_mradds(U, c->CGU, Y);
277  *G = vec_mradds(V, c->CGV, uvx);
278 }
279 
280 /*
281  * ------------------------------------------------------------------------------
282  * CS converters
283  * ------------------------------------------------------------------------------
284  */
285 
286 #define DEFCSP420_CVT(name, out_pixels) \
287 static int altivec_ ## name(SwsContext *c, const unsigned char **in, \
288  int *instrides, int srcSliceY, int srcSliceH, \
289  unsigned char **oplanes, int *outstrides) \
290 { \
291  int w = c->srcW; \
292  int h = srcSliceH; \
293  int i, j; \
294  int instrides_scl[3]; \
295  vector unsigned char y0, y1; \
296  \
297  vector signed char u, v; \
298  \
299  vector signed short Y0, Y1, Y2, Y3; \
300  vector signed short U, V; \
301  vector signed short vx, ux, uvx; \
302  vector signed short vx0, ux0, uvx0; \
303  vector signed short vx1, ux1, uvx1; \
304  vector signed short R0, G0, B0; \
305  vector signed short R1, G1, B1; \
306  vector unsigned char R, G, B; \
307  \
308  const vector unsigned char *y1ivP, *y2ivP, *uivP, *vivP; \
309  vector unsigned char align_perm; \
310  \
311  vector signed short lCY = c->CY; \
312  vector signed short lOY = c->OY; \
313  vector signed short lCRV = c->CRV; \
314  vector signed short lCBU = c->CBU; \
315  vector signed short lCGU = c->CGU; \
316  vector signed short lCGV = c->CGV; \
317  vector unsigned short lCSHIFT = c->CSHIFT; \
318  \
319  const ubyte *y1i = in[0]; \
320  const ubyte *y2i = in[0] + instrides[0]; \
321  const ubyte *ui = in[1]; \
322  const ubyte *vi = in[2]; \
323  \
324  vector unsigned char *oute, *outo; \
325  \
326  /* loop moves y{1, 2}i by w */ \
327  instrides_scl[0] = instrides[0] * 2 - w; \
328  /* loop moves ui by w / 2 */ \
329  instrides_scl[1] = instrides[1] - w / 2; \
330  /* loop moves vi by w / 2 */ \
331  instrides_scl[2] = instrides[2] - w / 2; \
332  \
333  for (i = 0; i < h / 2; i++) { \
334  oute = (vector unsigned char *)(oplanes[0] + outstrides[0] * \
335  (srcSliceY + i * 2)); \
336  outo = oute + (outstrides[0] >> 4); \
337  vec_dstst(outo, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 0); \
338  vec_dstst(oute, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 1); \
339  \
340  for (j = 0; j < w / 16; j++) { \
341  y1ivP = (const vector unsigned char *) y1i; \
342  y2ivP = (const vector unsigned char *) y2i; \
343  uivP = (const vector unsigned char *) ui; \
344  vivP = (const vector unsigned char *) vi; \
345  \
346  align_perm = vec_lvsl(0, y1i); \
347  y0 = (vector unsigned char) \
348  vec_perm(y1ivP[0], y1ivP[1], align_perm); \
349  \
350  align_perm = vec_lvsl(0, y2i); \
351  y1 = (vector unsigned char) \
352  vec_perm(y2ivP[0], y2ivP[1], align_perm); \
353  \
354  align_perm = vec_lvsl(0, ui); \
355  u = (vector signed char) \
356  vec_perm(uivP[0], uivP[1], align_perm); \
357  \
358  align_perm = vec_lvsl(0, vi); \
359  v = (vector signed char) \
360  vec_perm(vivP[0], vivP[1], align_perm); \
361  \
362  u = (vector signed char) \
363  vec_sub(u, \
364  (vector signed char) \
365  vec_splat((vector signed char) { 128 }, 0)); \
366  v = (vector signed char) \
367  vec_sub(v, \
368  (vector signed char) \
369  vec_splat((vector signed char) { 128 }, 0)); \
370  \
371  U = vec_unpackh(u); \
372  V = vec_unpackh(v); \
373  \
374  Y0 = vec_unh(y0); \
375  Y1 = vec_unl(y0); \
376  Y2 = vec_unh(y1); \
377  Y3 = vec_unl(y1); \
378  \
379  Y0 = vec_mradds(Y0, lCY, lOY); \
380  Y1 = vec_mradds(Y1, lCY, lOY); \
381  Y2 = vec_mradds(Y2, lCY, lOY); \
382  Y3 = vec_mradds(Y3, lCY, lOY); \
383  \
384  /* ux = (CBU * (u << CSHIFT) + 0x4000) >> 15 */ \
385  ux = vec_sl(U, lCSHIFT); \
386  ux = vec_mradds(ux, lCBU, (vector signed short) { 0 }); \
387  ux0 = vec_mergeh(ux, ux); \
388  ux1 = vec_mergel(ux, ux); \
389  \
390  /* vx = (CRV * (v << CSHIFT) + 0x4000) >> 15; */ \
391  vx = vec_sl(V, lCSHIFT); \
392  vx = vec_mradds(vx, lCRV, (vector signed short) { 0 }); \
393  vx0 = vec_mergeh(vx, vx); \
394  vx1 = vec_mergel(vx, vx); \
395  \
396  /* uvx = ((CGU * u) + (CGV * v)) >> 15 */ \
397  uvx = vec_mradds(U, lCGU, (vector signed short) { 0 }); \
398  uvx = vec_mradds(V, lCGV, uvx); \
399  uvx0 = vec_mergeh(uvx, uvx); \
400  uvx1 = vec_mergel(uvx, uvx); \
401  \
402  R0 = vec_add(Y0, vx0); \
403  G0 = vec_add(Y0, uvx0); \
404  B0 = vec_add(Y0, ux0); \
405  R1 = vec_add(Y1, vx1); \
406  G1 = vec_add(Y1, uvx1); \
407  B1 = vec_add(Y1, ux1); \
408  \
409  R = vec_packclp(R0, R1); \
410  G = vec_packclp(G0, G1); \
411  B = vec_packclp(B0, B1); \
412  \
413  out_pixels(R, G, B, oute); \
414  \
415  R0 = vec_add(Y2, vx0); \
416  G0 = vec_add(Y2, uvx0); \
417  B0 = vec_add(Y2, ux0); \
418  R1 = vec_add(Y3, vx1); \
419  G1 = vec_add(Y3, uvx1); \
420  B1 = vec_add(Y3, ux1); \
421  R = vec_packclp(R0, R1); \
422  G = vec_packclp(G0, G1); \
423  B = vec_packclp(B0, B1); \
424  \
425  \
426  out_pixels(R, G, B, outo); \
427  \
428  y1i += 16; \
429  y2i += 16; \
430  ui += 8; \
431  vi += 8; \
432  } \
433  \
434  ui += instrides_scl[1]; \
435  vi += instrides_scl[2]; \
436  y1i += instrides_scl[0]; \
437  y2i += instrides_scl[0]; \
438  } \
439  return srcSliceH; \
440 }
441 
442 #define out_abgr(a, b, c, ptr) \
443  vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), c, b, a, ptr)
444 #define out_bgra(a, b, c, ptr) \
445  vec_mstrgb32(__typeof__(a), c, b, a, ((__typeof__(a)) { 255 }), ptr)
446 #define out_rgba(a, b, c, ptr) \
447  vec_mstrgb32(__typeof__(a), a, b, c, ((__typeof__(a)) { 255 }), ptr)
448 #define out_argb(a, b, c, ptr) \
449  vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), a, b, c, ptr)
450 #define out_rgb24(a, b, c, ptr) vec_mstrgb24(a, b, c, ptr)
451 #define out_bgr24(a, b, c, ptr) vec_mstbgr24(a, b, c, ptr)
452 
453 DEFCSP420_CVT(yuv2_abgr, out_abgr)
454 DEFCSP420_CVT(yuv2_bgra, out_bgra)
455 DEFCSP420_CVT(yuv2_rgba, out_rgba)
456 DEFCSP420_CVT(yuv2_argb, out_argb)
457 DEFCSP420_CVT(yuv2_rgb24, out_rgb24)
458 DEFCSP420_CVT(yuv2_bgr24, out_bgr24)
459 
460 // uyvy|uyvy|uyvy|uyvy
461 // 0123 4567 89ab cdef
462 static const vector unsigned char
463  demux_u = { 0x10, 0x00, 0x10, 0x00,
464  0x10, 0x04, 0x10, 0x04,
465  0x10, 0x08, 0x10, 0x08,
466  0x10, 0x0c, 0x10, 0x0c },
467  demux_v = { 0x10, 0x02, 0x10, 0x02,
468  0x10, 0x06, 0x10, 0x06,
469  0x10, 0x0A, 0x10, 0x0A,
470  0x10, 0x0E, 0x10, 0x0E },
471  demux_y = { 0x10, 0x01, 0x10, 0x03,
472  0x10, 0x05, 0x10, 0x07,
473  0x10, 0x09, 0x10, 0x0B,
474  0x10, 0x0D, 0x10, 0x0F };
475 
476 /*
477  * this is so I can play live CCIR raw video
478  */
479 static int altivec_uyvy_rgb32(SwsContext *c, const unsigned char **in,
480  int *instrides, int srcSliceY, int srcSliceH,
481  unsigned char **oplanes, int *outstrides)
482 {
483  int w = c->srcW;
484  int h = srcSliceH;
485  int i, j;
486  vector unsigned char uyvy;
487  vector signed short Y, U, V;
488  vector signed short R0, G0, B0, R1, G1, B1;
489  vector unsigned char R, G, B;
490  vector unsigned char *out;
491  const ubyte *img;
492 
493  img = in[0];
494  out = (vector unsigned char *) (oplanes[0] + srcSliceY * outstrides[0]);
495 
496  for (i = 0; i < h; i++)
497  for (j = 0; j < w / 16; j++) {
498  uyvy = vec_ld(0, img);
499 
500  U = (vector signed short)
501  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
502  V = (vector signed short)
503  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
504  Y = (vector signed short)
505  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
506 
507  cvtyuvtoRGB(c, Y, U, V, &R0, &G0, &B0);
508 
509  uyvy = vec_ld(16, img);
510 
511  U = (vector signed short)
512  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
513  V = (vector signed short)
514  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
515  Y = (vector signed short)
516  vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
517 
518  cvtyuvtoRGB(c, Y, U, V, &R1, &G1, &B1);
519 
520  R = vec_packclp(R0, R1);
521  G = vec_packclp(G0, G1);
522  B = vec_packclp(B0, B1);
523 
524  // vec_mstbgr24 (R,G,B, out);
525  out_rgba(R, G, B, out);
526 
527  img += 32;
528  }
529  return srcSliceH;
530 }
531 
532 #endif /* HAVE_ALTIVEC */
533 
534 /* Ok currently the acceleration routine only supports
535  * inputs of widths a multiple of 16
536  * and heights a multiple 2
537  *
538  * So we just fall back to the C codes for this.
539  */
540 av_cold SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
541 {
542 #if HAVE_ALTIVEC
543  if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
544  return NULL;
545 
546  /*
547  * and this seems not to matter too much I tried a bunch of
548  * videos with abnormal widths and MPlayer crashes elsewhere.
549  * mplayer -vo x11 -rawvideo on:w=350:h=240 raw-350x240.eyuv
550  * boom with X11 bad match.
551  *
552  */
553  if ((c->srcW & 0xf) != 0)
554  return NULL;
555 
556  switch (c->srcFormat) {
557  case AV_PIX_FMT_YUV410P:
558  case AV_PIX_FMT_YUV420P:
559  /*case IMGFMT_CLPL: ??? */
560  case AV_PIX_FMT_GRAY8:
561  case AV_PIX_FMT_NV12:
562  case AV_PIX_FMT_NV21:
563  if ((c->srcH & 0x1) != 0)
564  return NULL;
565 
566  switch (c->dstFormat) {
567  case AV_PIX_FMT_RGB24:
568  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGB24\n");
569  return altivec_yuv2_rgb24;
570  case AV_PIX_FMT_BGR24:
571  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGR24\n");
572  return altivec_yuv2_bgr24;
573  case AV_PIX_FMT_ARGB:
574  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ARGB\n");
575  return altivec_yuv2_argb;
576  case AV_PIX_FMT_ABGR:
577  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ABGR\n");
578  return altivec_yuv2_abgr;
579  case AV_PIX_FMT_RGBA:
580  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGBA\n");
581  return altivec_yuv2_rgba;
582  case AV_PIX_FMT_BGRA:
583  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGRA\n");
584  return altivec_yuv2_bgra;
585  default: return NULL;
586  }
587  break;
588 
589  case AV_PIX_FMT_UYVY422:
590  switch (c->dstFormat) {
591  case AV_PIX_FMT_BGR32:
592  av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space UYVY -> RGB32\n");
593  return altivec_uyvy_rgb32;
594  default: return NULL;
595  }
596  break;
597  }
598 #endif /* HAVE_ALTIVEC */
599 
600  return NULL;
601 }
602 
603 av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c,
604  const int inv_table[4],
605  int brightness,
606  int contrast,
607  int saturation)
608 {
609 #if HAVE_ALTIVEC
610  union {
611  DECLARE_ALIGNED(16, signed short, tmp)[8];
612  vector signed short vec;
613  } buf;
614 
615  if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
616  return;
617 
618  buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9; // cy
619  buf.tmp[1] = -256 * brightness; // oy
620  buf.tmp[2] = (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16); // crv
621  buf.tmp[3] = (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16); // cbu
622  buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgu
623  buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgv
624 
625  c->CSHIFT = (vector unsigned short) vec_splat_u16(2);
626  c->CY = vec_splat((vector signed short) buf.vec, 0);
627  c->OY = vec_splat((vector signed short) buf.vec, 1);
628  c->CRV = vec_splat((vector signed short) buf.vec, 2);
629  c->CBU = vec_splat((vector signed short) buf.vec, 3);
630  c->CGU = vec_splat((vector signed short) buf.vec, 4);
631  c->CGV = vec_splat((vector signed short) buf.vec, 5);
632  return;
633 #endif /* HAVE_ALTIVEC */
634 }
635 
636 #if HAVE_ALTIVEC
637 
638 static av_always_inline void yuv2packedX_altivec(SwsContext *c,
639  const int16_t *lumFilter,
640  const int16_t **lumSrc,
641  int lumFilterSize,
642  const int16_t *chrFilter,
643  const int16_t **chrUSrc,
644  const int16_t **chrVSrc,
645  int chrFilterSize,
646  const int16_t **alpSrc,
647  uint8_t *dest,
648  int dstW, int dstY,
649  enum AVPixelFormat target)
650 {
651  int i, j;
652  vector signed short X, X0, X1, Y0, U0, V0, Y1, U1, V1, U, V;
653  vector signed short R0, G0, B0, R1, G1, B1;
654 
655  vector unsigned char R, G, B;
656  vector unsigned char *out, *nout;
657 
658  vector signed short RND = vec_splat_s16(1 << 3);
659  vector unsigned short SCL = vec_splat_u16(4);
660  DECLARE_ALIGNED(16, unsigned int, scratch)[16];
661 
662  vector signed short *YCoeffs, *CCoeffs;
663 
664  YCoeffs = c->vYCoeffsBank + dstY * lumFilterSize;
665  CCoeffs = c->vCCoeffsBank + dstY * chrFilterSize;
666 
667  out = (vector unsigned char *) dest;
668 
669  for (i = 0; i < dstW; i += 16) {
670  Y0 = RND;
671  Y1 = RND;
672  /* extract 16 coeffs from lumSrc */
673  for (j = 0; j < lumFilterSize; j++) {
674  X0 = vec_ld(0, &lumSrc[j][i]);
675  X1 = vec_ld(16, &lumSrc[j][i]);
676  Y0 = vec_mradds(X0, YCoeffs[j], Y0);
677  Y1 = vec_mradds(X1, YCoeffs[j], Y1);
678  }
679 
680  U = RND;
681  V = RND;
682  /* extract 8 coeffs from U,V */
683  for (j = 0; j < chrFilterSize; j++) {
684  X = vec_ld(0, &chrUSrc[j][i / 2]);
685  U = vec_mradds(X, CCoeffs[j], U);
686  X = vec_ld(0, &chrVSrc[j][i / 2]);
687  V = vec_mradds(X, CCoeffs[j], V);
688  }
689 
690  /* scale and clip signals */
691  Y0 = vec_sra(Y0, SCL);
692  Y1 = vec_sra(Y1, SCL);
693  U = vec_sra(U, SCL);
694  V = vec_sra(V, SCL);
695 
696  Y0 = vec_clip_s16(Y0);
697  Y1 = vec_clip_s16(Y1);
698  U = vec_clip_s16(U);
699  V = vec_clip_s16(V);
700 
701  /* now we have
702  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
703  * U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
704  *
705  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
706  * U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
707  * V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
708  */
709 
710  U0 = vec_mergeh(U, U);
711  V0 = vec_mergeh(V, V);
712 
713  U1 = vec_mergel(U, U);
714  V1 = vec_mergel(V, V);
715 
716  cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
717  cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
718 
719  R = vec_packclp(R0, R1);
720  G = vec_packclp(G0, G1);
721  B = vec_packclp(B0, B1);
722 
723  switch (target) {
724  case AV_PIX_FMT_ABGR:
725  out_abgr(R, G, B, out);
726  break;
727  case AV_PIX_FMT_BGRA:
728  out_bgra(R, G, B, out);
729  break;
730  case AV_PIX_FMT_RGBA:
731  out_rgba(R, G, B, out);
732  break;
733  case AV_PIX_FMT_ARGB:
734  out_argb(R, G, B, out);
735  break;
736  case AV_PIX_FMT_RGB24:
737  out_rgb24(R, G, B, out);
738  break;
739  case AV_PIX_FMT_BGR24:
740  out_bgr24(R, G, B, out);
741  break;
742  default:
743  {
744  /* If this is reached, the caller should have called yuv2packedXinC
745  * instead. */
746  static int printed_error_message;
747  if (!printed_error_message) {
748  av_log(c, AV_LOG_ERROR,
749  "altivec_yuv2packedX doesn't support %s output\n",
750  av_get_pix_fmt_name(c->dstFormat));
751  printed_error_message = 1;
752  }
753  return;
754  }
755  }
756  }
757 
758  if (i < dstW) {
759  i -= 16;
760 
761  Y0 = RND;
762  Y1 = RND;
763  /* extract 16 coeffs from lumSrc */
764  for (j = 0; j < lumFilterSize; j++) {
765  X0 = vec_ld(0, &lumSrc[j][i]);
766  X1 = vec_ld(16, &lumSrc[j][i]);
767  Y0 = vec_mradds(X0, YCoeffs[j], Y0);
768  Y1 = vec_mradds(X1, YCoeffs[j], Y1);
769  }
770 
771  U = RND;
772  V = RND;
773  /* extract 8 coeffs from U,V */
774  for (j = 0; j < chrFilterSize; j++) {
775  X = vec_ld(0, &chrUSrc[j][i / 2]);
776  U = vec_mradds(X, CCoeffs[j], U);
777  X = vec_ld(0, &chrVSrc[j][i / 2]);
778  V = vec_mradds(X, CCoeffs[j], V);
779  }
780 
781  /* scale and clip signals */
782  Y0 = vec_sra(Y0, SCL);
783  Y1 = vec_sra(Y1, SCL);
784  U = vec_sra(U, SCL);
785  V = vec_sra(V, SCL);
786 
787  Y0 = vec_clip_s16(Y0);
788  Y1 = vec_clip_s16(Y1);
789  U = vec_clip_s16(U);
790  V = vec_clip_s16(V);
791 
792  /* now we have
793  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
794  * U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
795  *
796  * Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
797  * U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
798  * V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
799  */
800 
801  U0 = vec_mergeh(U, U);
802  V0 = vec_mergeh(V, V);
803 
804  U1 = vec_mergel(U, U);
805  V1 = vec_mergel(V, V);
806 
807  cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
808  cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
809 
810  R = vec_packclp(R0, R1);
811  G = vec_packclp(G0, G1);
812  B = vec_packclp(B0, B1);
813 
814  nout = (vector unsigned char *) scratch;
815  switch (target) {
816  case AV_PIX_FMT_ABGR:
817  out_abgr(R, G, B, nout);
818  break;
819  case AV_PIX_FMT_BGRA:
820  out_bgra(R, G, B, nout);
821  break;
822  case AV_PIX_FMT_RGBA:
823  out_rgba(R, G, B, nout);
824  break;
825  case AV_PIX_FMT_ARGB:
826  out_argb(R, G, B, nout);
827  break;
828  case AV_PIX_FMT_RGB24:
829  out_rgb24(R, G, B, nout);
830  break;
831  case AV_PIX_FMT_BGR24:
832  out_bgr24(R, G, B, nout);
833  break;
834  default:
835  /* Unreachable, I think. */
836  av_log(c, AV_LOG_ERROR,
837  "altivec_yuv2packedX doesn't support %s output\n",
838  av_get_pix_fmt_name(c->dstFormat));
839  return;
840  }
841 
842  memcpy(&((uint32_t *) dest)[i], scratch, (dstW - i) / 4);
843  }
844 }
845 
846 #define YUV2PACKEDX_WRAPPER(suffix, pixfmt) \
847 void ff_yuv2 ## suffix ## _X_altivec(SwsContext *c, \
848  const int16_t *lumFilter, \
849  const int16_t **lumSrc, \
850  int lumFilterSize, \
851  const int16_t *chrFilter, \
852  const int16_t **chrUSrc, \
853  const int16_t **chrVSrc, \
854  int chrFilterSize, \
855  const int16_t **alpSrc, \
856  uint8_t *dest, int dstW, int dstY) \
857 { \
858  yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize, \
859  chrFilter, chrUSrc, chrVSrc, \
860  chrFilterSize, alpSrc, \
861  dest, dstW, dstY, pixfmt); \
862 }
863 
864 YUV2PACKEDX_WRAPPER(abgr, AV_PIX_FMT_ABGR);
865 YUV2PACKEDX_WRAPPER(bgra, AV_PIX_FMT_BGRA);
866 YUV2PACKEDX_WRAPPER(argb, AV_PIX_FMT_ARGB);
867 YUV2PACKEDX_WRAPPER(rgba, AV_PIX_FMT_RGBA);
868 YUV2PACKEDX_WRAPPER(rgb24, AV_PIX_FMT_RGB24);
869 YUV2PACKEDX_WRAPPER(bgr24, AV_PIX_FMT_BGR24);
870 
871 #endif /* HAVE_ALTIVEC */
AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:82
NULL
#define NULL
Definition: coverity.c:32
AV_CPU_FLAG_ALTIVEC
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:56
ff_yuv2rgb_init_tables_ppc
av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
Definition: yuv2rgb_altivec.c:603
h
h
Definition: vp9dsp_template.c:2093
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
attributes.h
Macro definitions for various function/variable attributes.
SwsContext::srcH
int srcH
Height of source luma/alpha planes.
Definition: swscale_internal.h:296
B1
#define B1
Definition: faandct.c:41
img
#define img
Definition: vf_colormatrix.c:116
uint8_t
uint8_t
Definition: audio_convert.c:194
av_cold
#define av_cold
Definition: attributes.h:82
Y
#define Y
Definition: vf_boxblur.c:76
B
Definition: vf_geq.c:46
AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:95
swscale.h
external API header
SwsContext::dstFormat
enum AVPixelFormat dstFormat
Destination pixel format.
Definition: swscale_internal.h:304
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
U
#define U(x)
Definition: vp56_arith.h:37
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
R0
#define R0(v, w, x, y, z, i)
Definition: sha.c:56
AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:96
AV_PIX_FMT_NV12
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
AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:93
AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94
AV_PIX_FMT_NV21
as above, but U and V bytes are swapped
Definition: pixfmt.h:91
R
Definition: vf_geq.c:46
AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
swscale_internal.h
AV_PIX_FMT_BGR32
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:320
R1
#define R1
Definition: simple_idct.c:163
G
Definition: vf_geq.c:46
in
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
Definition: audio_convert.c:194
buf
void * buf
Definition: avisynth_c.h:553
AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
SwsFunc
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale_internal.h:86
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
yuv2rgb_altivec.h
ff_yuv2rgb_init_ppc
av_cold SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
Definition: yuv2rgb_altivec.c:540
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:70
c
static double c[64]
Definition: vsrc_mptestsrc.c:87
SwsContext::srcFormat
enum AVPixelFormat srcFormat
Source pixel format.
Definition: swscale_internal.h:305
tmp
static uint8_t tmp[8]
Definition: des.c:38
out
FILE * out
Definition: movenc.c:54
av_always_inline
#define av_always_inline
Definition: attributes.h:39
av_get_pix_fmt_name
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:2138
SwsContext::srcW
int srcW
Width of source luma/alpha planes.
Definition: swscale_internal.h:295
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
B0
#define B0
Definition: faandct.c:40
V
#define V
Definition: avdct.c:30
Generated on Mon Jun 27 2016 02:34:47 for FFmpeg by   doxygen 1.8.6