video4linux2 input support
[libav.git] / libavformat / grab.c
1 /*
2 * Linux video grab interface
3 * Copyright (c) 2000,2001 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19 #include "avformat.h"
20 #include <unistd.h>
21 #include <fcntl.h>
22 #include <sys/ioctl.h>
23 #include <sys/mman.h>
24 #include <sys/time.h>
25 #define _LINUX_TIME_H 1
26 #include <linux/videodev.h>
27 #include <time.h>
28
29 typedef struct {
30 int fd;
31 int frame_format; /* see VIDEO_PALETTE_xxx */
32 int use_mmap;
33 int width, height;
34 int frame_rate;
35 int frame_rate_base;
36 int64_t time_frame;
37 int frame_size;
38 struct video_capability video_cap;
39 struct video_audio audio_saved;
40 uint8_t *video_buf;
41 struct video_mbuf gb_buffers;
42 struct video_mmap gb_buf;
43 int gb_frame;
44
45 /* ATI All In Wonder specific stuff */
46 /* XXX: remove and merge in libavcodec/imgconvert.c */
47 int aiw_enabled;
48 int deint;
49 int halfw;
50 uint8_t *src_mem;
51 uint8_t *lum_m4_mem;
52 } VideoData;
53
54 static int aiw_init(VideoData *s);
55 static int aiw_read_picture(VideoData *s, uint8_t *data);
56 static int aiw_close(VideoData *s);
57
58 static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
59 {
60 VideoData *s = s1->priv_data;
61 AVStream *st;
62 int width, height;
63 int video_fd, frame_size;
64 int ret, frame_rate, frame_rate_base;
65 int desired_palette;
66 struct video_tuner tuner;
67 struct video_audio audio;
68 const char *video_device;
69 int j;
70
71 if (!ap || ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0)
72 return -1;
73
74 width = ap->width;
75 height = ap->height;
76 frame_rate = ap->time_base.den;
77 frame_rate_base = ap->time_base.num;
78
79 if((unsigned)width > 32767 || (unsigned)height > 32767)
80 return -1;
81
82 st = av_new_stream(s1, 0);
83 if (!st)
84 return -ENOMEM;
85 av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
86
87 s->width = width;
88 s->height = height;
89 s->frame_rate = frame_rate;
90 s->frame_rate_base = frame_rate_base;
91
92 video_device = ap->device;
93 if (!video_device)
94 video_device = "/dev/video";
95 video_fd = open(video_device, O_RDWR);
96 if (video_fd < 0) {
97 perror(video_device);
98 goto fail;
99 }
100
101 if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
102 perror("VIDIOCGCAP");
103 goto fail;
104 }
105
106 if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
107 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
108 goto fail;
109 }
110
111 desired_palette = -1;
112 if (st->codec->pix_fmt == PIX_FMT_YUV420P) {
113 desired_palette = VIDEO_PALETTE_YUV420P;
114 } else if (st->codec->pix_fmt == PIX_FMT_YUV422) {
115 desired_palette = VIDEO_PALETTE_YUV422;
116 } else if (st->codec->pix_fmt == PIX_FMT_BGR24) {
117 desired_palette = VIDEO_PALETTE_RGB24;
118 }
119
120 /* set tv standard */
121 if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
122 if (!strcasecmp(ap->standard, "pal"))
123 tuner.mode = VIDEO_MODE_PAL;
124 else if (!strcasecmp(ap->standard, "secam"))
125 tuner.mode = VIDEO_MODE_SECAM;
126 else
127 tuner.mode = VIDEO_MODE_NTSC;
128 ioctl(video_fd, VIDIOCSTUNER, &tuner);
129 }
130
131 /* unmute audio */
132 audio.audio = 0;
133 ioctl(video_fd, VIDIOCGAUDIO, &audio);
134 memcpy(&s->audio_saved, &audio, sizeof(audio));
135 audio.flags &= ~VIDEO_AUDIO_MUTE;
136 ioctl(video_fd, VIDIOCSAUDIO, &audio);
137
138 ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
139 if (ret < 0) {
140 /* try to use read based access */
141 struct video_window win;
142 struct video_picture pict;
143 int val;
144
145 win.x = 0;
146 win.y = 0;
147 win.width = width;
148 win.height = height;
149 win.chromakey = -1;
150 win.flags = 0;
151
152 ioctl(video_fd, VIDIOCSWIN, &win);
153
154 ioctl(video_fd, VIDIOCGPICT, &pict);
155 #if 0
156 printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
157 pict.colour,
158 pict.hue,
159 pict.brightness,
160 pict.contrast,
161 pict.whiteness);
162 #endif
163 /* try to choose a suitable video format */
164 pict.palette = desired_palette;
165 if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
166 pict.palette=VIDEO_PALETTE_YUV420P;
167 ret = ioctl(video_fd, VIDIOCSPICT, &pict);
168 if (ret < 0) {
169 pict.palette=VIDEO_PALETTE_YUV422;
170 ret = ioctl(video_fd, VIDIOCSPICT, &pict);
171 if (ret < 0) {
172 pict.palette=VIDEO_PALETTE_RGB24;
173 ret = ioctl(video_fd, VIDIOCSPICT, &pict);
174 if (ret < 0)
175 goto fail1;
176 }
177 }
178 }
179
180 s->frame_format = pict.palette;
181
182 val = 1;
183 ioctl(video_fd, VIDIOCCAPTURE, &val);
184
185 s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
186 s->use_mmap = 0;
187
188 /* ATI All In Wonder automatic activation */
189 if (!strcmp(s->video_cap.name, "Km")) {
190 if (aiw_init(s) < 0)
191 goto fail;
192 s->aiw_enabled = 1;
193 /* force 420P format because convertion from YUV422 to YUV420P
194 is done in this driver (ugly) */
195 s->frame_format = VIDEO_PALETTE_YUV420P;
196 }
197 } else {
198 s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
199 if ((unsigned char*)-1 == s->video_buf) {
200 perror("mmap");
201 goto fail;
202 }
203 s->gb_frame = 0;
204 s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
205
206 /* start to grab the first frame */
207 s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
208 s->gb_buf.height = height;
209 s->gb_buf.width = width;
210 s->gb_buf.format = desired_palette;
211
212 if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf)) < 0) {
213 s->gb_buf.format = VIDEO_PALETTE_YUV420P;
214
215 ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
216 if (ret < 0 && errno != EAGAIN) {
217 /* try YUV422 */
218 s->gb_buf.format = VIDEO_PALETTE_YUV422;
219
220 ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
221 if (ret < 0 && errno != EAGAIN) {
222 /* try RGB24 */
223 s->gb_buf.format = VIDEO_PALETTE_RGB24;
224 ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
225 }
226 }
227 }
228 if (ret < 0) {
229 if (errno != EAGAIN) {
230 fail1:
231 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
232 } else {
233 av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
234 }
235 goto fail;
236 }
237 for (j = 1; j < s->gb_buffers.frames; j++) {
238 s->gb_buf.frame = j;
239 ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
240 }
241 s->frame_format = s->gb_buf.format;
242 s->use_mmap = 1;
243 }
244
245 switch(s->frame_format) {
246 case VIDEO_PALETTE_YUV420P:
247 frame_size = (width * height * 3) / 2;
248 st->codec->pix_fmt = PIX_FMT_YUV420P;
249 break;
250 case VIDEO_PALETTE_YUV422:
251 frame_size = width * height * 2;
252 st->codec->pix_fmt = PIX_FMT_YUV422;
253 break;
254 case VIDEO_PALETTE_RGB24:
255 frame_size = width * height * 3;
256 st->codec->pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */
257 break;
258 default:
259 goto fail;
260 }
261 s->fd = video_fd;
262 s->frame_size = frame_size;
263
264 st->codec->codec_type = CODEC_TYPE_VIDEO;
265 st->codec->codec_id = CODEC_ID_RAWVIDEO;
266 st->codec->width = width;
267 st->codec->height = height;
268 st->codec->time_base.den = frame_rate;
269 st->codec->time_base.num = frame_rate_base;
270 st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
271
272 return 0;
273 fail:
274 if (video_fd >= 0)
275 close(video_fd);
276 av_free(st);
277 return AVERROR_IO;
278 }
279
280 static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
281 {
282 uint8_t *ptr;
283
284 while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
285 (errno == EAGAIN || errno == EINTR));
286
287 ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
288 memcpy(buf, ptr, s->frame_size);
289
290 /* Setup to capture the next frame */
291 s->gb_buf.frame = s->gb_frame;
292 if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
293 if (errno == EAGAIN)
294 av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
295 else
296 perror("VIDIOCMCAPTURE");
297 return AVERROR_IO;
298 }
299
300 /* This is now the grabbing frame */
301 s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
302
303 return s->frame_size;
304 }
305
306 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
307 {
308 VideoData *s = s1->priv_data;
309 int64_t curtime, delay;
310 struct timespec ts;
311
312 /* Calculate the time of the next frame */
313 s->time_frame += int64_t_C(1000000);
314
315 /* wait based on the frame rate */
316 for(;;) {
317 curtime = av_gettime();
318 delay = s->time_frame * s->frame_rate_base / s->frame_rate - curtime;
319 if (delay <= 0) {
320 if (delay < int64_t_C(-1000000) * s->frame_rate_base / s->frame_rate) {
321 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
322 s->time_frame += int64_t_C(1000000);
323 }
324 break;
325 }
326 ts.tv_sec = delay / 1000000;
327 ts.tv_nsec = (delay % 1000000) * 1000;
328 nanosleep(&ts, NULL);
329 }
330
331 if (av_new_packet(pkt, s->frame_size) < 0)
332 return AVERROR_IO;
333
334 pkt->pts = curtime;
335
336 /* read one frame */
337 if (s->aiw_enabled) {
338 return aiw_read_picture(s, pkt->data);
339 } else if (s->use_mmap) {
340 return v4l_mm_read_picture(s, pkt->data);
341 } else {
342 if (read(s->fd, pkt->data, pkt->size) != pkt->size)
343 return AVERROR_IO;
344 return s->frame_size;
345 }
346 }
347
348 static int grab_read_close(AVFormatContext *s1)
349 {
350 VideoData *s = s1->priv_data;
351
352 if (s->aiw_enabled)
353 aiw_close(s);
354
355 if (s->use_mmap)
356 munmap(s->video_buf, s->gb_buffers.size);
357
358 /* mute audio. we must force it because the BTTV driver does not
359 return its state correctly */
360 s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
361 ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
362
363 close(s->fd);
364 return 0;
365 }
366
367 static AVInputFormat video_grab_device_format = {
368 "video4linux",
369 "video grab",
370 sizeof(VideoData),
371 NULL,
372 grab_read_header,
373 grab_read_packet,
374 grab_read_close,
375 .flags = AVFMT_NOFILE,
376 };
377
378 /* All in Wonder specific stuff */
379 /* XXX: remove and merge in libavcodec/imgconvert.c */
380
381 static int aiw_init(VideoData *s)
382 {
383 int width, height;
384
385 width = s->width;
386 height = s->height;
387
388 if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
389 (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
390 (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
391
392 s->deint=0;
393 s->halfw=0;
394 if (height == s->video_cap.maxheight*2) s->deint=1;
395 if (width == s->video_cap.maxwidth/2) s->halfw=1;
396 } else {
397 av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
398 av_log(NULL, AV_LOG_ERROR, " %dx%d %dx%d %dx%d\n\n",
399 s->video_cap.maxwidth,s->video_cap.maxheight,
400 s->video_cap.maxwidth,s->video_cap.maxheight*2,
401 s->video_cap.maxwidth/2,s->video_cap.maxheight);
402 goto fail;
403 }
404
405 if (s->halfw == 0) {
406 s->src_mem = av_malloc(s->width*2);
407 } else {
408 s->src_mem = av_malloc(s->width*4);
409 }
410 if (!s->src_mem) goto fail;
411
412 s->lum_m4_mem = av_malloc(s->width);
413 if (!s->lum_m4_mem)
414 goto fail;
415 return 0;
416 fail:
417 av_freep(&s->src_mem);
418 av_freep(&s->lum_m4_mem);
419 return -1;
420 }
421
422 #ifdef HAVE_MMX
423 #include "libavcodec/i386/mmx.h"
424
425 #define LINE_WITH_UV \
426 movq_m2r(ptr[0],mm0); \
427 movq_m2r(ptr[8],mm1); \
428 movq_r2r(mm0, mm4); \
429 punpcklbw_r2r(mm1,mm0); \
430 punpckhbw_r2r(mm1,mm4); \
431 movq_r2r(mm0,mm5); \
432 punpcklbw_r2r(mm4,mm0); \
433 punpckhbw_r2r(mm4,mm5); \
434 movq_r2r(mm0,mm1); \
435 punpcklbw_r2r(mm5,mm1); \
436 movq_r2m(mm1,lum[0]); \
437 movq_m2r(ptr[16],mm2); \
438 movq_m2r(ptr[24],mm1); \
439 movq_r2r(mm2,mm4); \
440 punpcklbw_r2r(mm1,mm2); \
441 punpckhbw_r2r(mm1,mm4); \
442 movq_r2r(mm2,mm3); \
443 punpcklbw_r2r(mm4,mm2); \
444 punpckhbw_r2r(mm4,mm3); \
445 movq_r2r(mm2,mm1); \
446 punpcklbw_r2r(mm3,mm1); \
447 movq_r2m(mm1,lum[8]); \
448 punpckhdq_r2r(mm2,mm0); \
449 punpckhdq_r2r(mm3,mm5); \
450 movq_r2m(mm0,cb[0]); \
451 movq_r2m(mm5,cr[0]);
452
453 #define LINE_NO_UV \
454 movq_m2r(ptr[0],mm0);\
455 movq_m2r(ptr[8],mm1);\
456 movq_r2r(mm0, mm4);\
457 punpcklbw_r2r(mm1,mm0); \
458 punpckhbw_r2r(mm1,mm4);\
459 movq_r2r(mm0,mm5);\
460 punpcklbw_r2r(mm4,mm0);\
461 punpckhbw_r2r(mm4,mm5);\
462 movq_r2r(mm0,mm1);\
463 punpcklbw_r2r(mm5,mm1);\
464 movq_r2m(mm1,lum[0]);\
465 movq_m2r(ptr[16],mm2);\
466 movq_m2r(ptr[24],mm1);\
467 movq_r2r(mm2,mm4);\
468 punpcklbw_r2r(mm1,mm2);\
469 punpckhbw_r2r(mm1,mm4);\
470 movq_r2r(mm2,mm3);\
471 punpcklbw_r2r(mm4,mm2);\
472 punpckhbw_r2r(mm4,mm3);\
473 movq_r2r(mm2,mm1);\
474 punpcklbw_r2r(mm3,mm1);\
475 movq_r2m(mm1,lum[8]);
476
477 #define LINE_WITHUV_AVG \
478 movq_m2r(ptr[0], mm0);\
479 movq_m2r(ptr[8], mm1);\
480 movq_r2r(mm0, mm4);\
481 punpcklbw_r2r(mm1,mm0);\
482 punpckhbw_r2r(mm1,mm4);\
483 movq_r2r(mm0,mm5);\
484 punpcklbw_r2r(mm4,mm0);\
485 punpckhbw_r2r(mm4,mm5);\
486 movq_r2r(mm0,mm1);\
487 movq_r2r(mm5,mm2);\
488 punpcklbw_r2r(mm7,mm1);\
489 punpcklbw_r2r(mm7,mm2);\
490 paddw_r2r(mm6,mm1);\
491 paddw_r2r(mm2,mm1);\
492 psraw_i2r(1,mm1);\
493 packuswb_r2r(mm7,mm1);\
494 movd_r2m(mm1,lum[0]);\
495 movq_m2r(ptr[16],mm2);\
496 movq_m2r(ptr[24],mm1);\
497 movq_r2r(mm2,mm4);\
498 punpcklbw_r2r(mm1,mm2);\
499 punpckhbw_r2r(mm1,mm4);\
500 movq_r2r(mm2,mm3);\
501 punpcklbw_r2r(mm4,mm2);\
502 punpckhbw_r2r(mm4,mm3);\
503 movq_r2r(mm2,mm1);\
504 movq_r2r(mm3,mm4);\
505 punpcklbw_r2r(mm7,mm1);\
506 punpcklbw_r2r(mm7,mm4);\
507 paddw_r2r(mm6,mm1);\
508 paddw_r2r(mm4,mm1);\
509 psraw_i2r(1,mm1);\
510 packuswb_r2r(mm7,mm1);\
511 movd_r2m(mm1,lum[4]);\
512 punpckhbw_r2r(mm7,mm0);\
513 punpckhbw_r2r(mm7,mm2);\
514 paddw_r2r(mm6,mm0);\
515 paddw_r2r(mm2,mm0);\
516 psraw_i2r(1,mm0);\
517 packuswb_r2r(mm7,mm0);\
518 punpckhbw_r2r(mm7,mm5);\
519 punpckhbw_r2r(mm7,mm3);\
520 paddw_r2r(mm6,mm5);\
521 paddw_r2r(mm3,mm5);\
522 psraw_i2r(1,mm5);\
523 packuswb_r2r(mm7,mm5);\
524 movd_r2m(mm0,cb[0]);\
525 movd_r2m(mm5,cr[0]);
526
527 #define LINE_NOUV_AVG \
528 movq_m2r(ptr[0],mm0);\
529 movq_m2r(ptr[8],mm1);\
530 pand_r2r(mm5,mm0);\
531 pand_r2r(mm5,mm1);\
532 pmaddwd_r2r(mm6,mm0);\
533 pmaddwd_r2r(mm6,mm1);\
534 packssdw_r2r(mm1,mm0);\
535 paddw_r2r(mm6,mm0);\
536 psraw_i2r(1,mm0);\
537 movq_m2r(ptr[16],mm2);\
538 movq_m2r(ptr[24],mm3);\
539 pand_r2r(mm5,mm2);\
540 pand_r2r(mm5,mm3);\
541 pmaddwd_r2r(mm6,mm2);\
542 pmaddwd_r2r(mm6,mm3);\
543 packssdw_r2r(mm3,mm2);\
544 paddw_r2r(mm6,mm2);\
545 psraw_i2r(1,mm2);\
546 packuswb_r2r(mm2,mm0);\
547 movq_r2m(mm0,lum[0]);
548
549 #define DEINT_LINE_LUM(ptroff) \
550 movd_m2r(lum_m4[(ptroff)],mm0);\
551 movd_m2r(lum_m3[(ptroff)],mm1);\
552 movd_m2r(lum_m2[(ptroff)],mm2);\
553 movd_m2r(lum_m1[(ptroff)],mm3);\
554 movd_m2r(lum[(ptroff)],mm4);\
555 punpcklbw_r2r(mm7,mm0);\
556 movd_r2m(mm2,lum_m4[(ptroff)]);\
557 punpcklbw_r2r(mm7,mm1);\
558 punpcklbw_r2r(mm7,mm2);\
559 punpcklbw_r2r(mm7,mm3);\
560 punpcklbw_r2r(mm7,mm4);\
561 psllw_i2r(2,mm1);\
562 psllw_i2r(1,mm2);\
563 paddw_r2r(mm6,mm1);\
564 psllw_i2r(2,mm3);\
565 paddw_r2r(mm2,mm1);\
566 paddw_r2r(mm4,mm0);\
567 paddw_r2r(mm3,mm1);\
568 psubusw_r2r(mm0,mm1);\
569 psrlw_i2r(3,mm1);\
570 packuswb_r2r(mm7,mm1);\
571 movd_r2m(mm1,lum_m2[(ptroff)]);
572
573 #else
574 #include "libavcodec/dsputil.h"
575
576 #define LINE_WITH_UV \
577 lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
578 cb[0]=ptr[1];cb[1]=ptr[5];\
579 cr[0]=ptr[3];cr[1]=ptr[7];\
580 lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
581 cb[2]=ptr[9];cb[3]=ptr[13];\
582 cr[2]=ptr[11];cr[3]=ptr[15];\
583 lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
584 cb[4]=ptr[17];cb[5]=ptr[21];\
585 cr[4]=ptr[19];cr[5]=ptr[23];\
586 lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
587 cb[6]=ptr[25];cb[7]=ptr[29];\
588 cr[6]=ptr[27];cr[7]=ptr[31];
589
590 #define LINE_NO_UV \
591 lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
592 lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
593 lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
594 lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
595
596 #define LINE_WITHUV_AVG \
597 sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
598 sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
599 sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
600 sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
601 sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
602 sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
603 sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
604 sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
605 sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
606 sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
607 sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
608 sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
609 sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
610 sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
611 sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
612 sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
613
614 #define LINE_NOUV_AVG \
615 sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
616 sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
617 sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
618 sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
619 sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
620 sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
621 sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
622 sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
623
624 #define DEINT_LINE_LUM(ptroff) \
625 sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
626 lum_m4[(ptroff)]=lum_m2[(ptroff)];\
627 lum_m2[(ptroff)]=cm[(sum+4)>>3];\
628 sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
629 lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
630 lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
631 sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
632 lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
633 lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
634 sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
635 lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
636 lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
637
638 #endif
639
640
641 /* Read two fields separately. */
642 static int aiw_read_picture(VideoData *s, uint8_t *data)
643 {
644 uint8_t *ptr, *lum, *cb, *cr;
645 int h;
646 #ifndef HAVE_MMX
647 int sum;
648 #endif
649 uint8_t* src = s->src_mem;
650 uint8_t *ptrend = &src[s->width*2];
651 lum=data;
652 cb=&lum[s->width*s->height];
653 cr=&cb[(s->width*s->height)/4];
654 if (s->deint == 0 && s->halfw == 0) {
655 while (read(s->fd,src,s->width*2) < 0) {
656 usleep(100);
657 }
658 for (h = 0; h < s->height-2; h+=2) {
659 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
660 LINE_WITH_UV
661 }
662 read(s->fd,src,s->width*2);
663 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
664 LINE_NO_UV
665 }
666 read(s->fd,src,s->width*2);
667 }
668 /*
669 * Do last two lines
670 */
671 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
672 LINE_WITH_UV
673 }
674 read(s->fd,src,s->width*2);
675 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
676 LINE_NO_UV
677 }
678 /* drop second field */
679 while (read(s->fd,src,s->width*2) < 0) {
680 usleep(100);
681 }
682 for (h = 0; h < s->height - 1; h++) {
683 read(s->fd,src,s->width*2);
684 }
685 } else if (s->halfw == 1) {
686 #ifdef HAVE_MMX
687 mmx_t rounder;
688 mmx_t masker;
689 rounder.uw[0]=1;
690 rounder.uw[1]=1;
691 rounder.uw[2]=1;
692 rounder.uw[3]=1;
693 masker.ub[0]=0xff;
694 masker.ub[1]=0;
695 masker.ub[2]=0xff;
696 masker.ub[3]=0;
697 masker.ub[4]=0xff;
698 masker.ub[5]=0;
699 masker.ub[6]=0xff;
700 masker.ub[7]=0;
701 pxor_r2r(mm7,mm7);
702 movq_m2r(rounder,mm6);
703 #endif
704 while (read(s->fd,src,s->width*4) < 0) {
705 usleep(100);
706 }
707 ptrend = &src[s->width*4];
708 for (h = 0; h < s->height-2; h+=2) {
709 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
710 LINE_WITHUV_AVG
711 }
712 read(s->fd,src,s->width*4);
713 #ifdef HAVE_MMX
714 movq_m2r(masker,mm5);
715 #endif
716 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
717 LINE_NOUV_AVG
718 }
719 read(s->fd,src,s->width*4);
720 }
721 /*
722 * Do last two lines
723 */
724 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
725 LINE_WITHUV_AVG
726 }
727 read(s->fd,src,s->width*4);
728 #ifdef HAVE_MMX
729 movq_m2r(masker,mm5);
730 #endif
731 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
732 LINE_NOUV_AVG
733 }
734 /* drop second field */
735 while (read(s->fd,src,s->width*4) < 0) {
736 usleep(100);
737 }
738 for (h = 0; h < s->height - 1; h++) {
739 read(s->fd,src,s->width*4);
740 }
741 } else {
742 uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
743 #ifdef HAVE_MMX
744 mmx_t rounder;
745 rounder.uw[0]=4;
746 rounder.uw[1]=4;
747 rounder.uw[2]=4;
748 rounder.uw[3]=4;
749 movq_m2r(rounder,mm6);
750 pxor_r2r(mm7,mm7);
751 #else
752 uint8_t *cm = cropTbl + MAX_NEG_CROP;
753 #endif
754
755 /* read two fields and deinterlace them */
756 while (read(s->fd,src,s->width*2) < 0) {
757 usleep(100);
758 }
759 for (h = 0; h < (s->height/2)-2; h+=2) {
760 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
761 LINE_WITH_UV
762 }
763 read(s->fd,src,s->width*2);
764 /* skip a luminance line - will be filled in later */
765 lum += s->width;
766 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
767 LINE_WITH_UV
768 }
769 /* skip a luminance line - will be filled in later */
770 lum += s->width;
771 read(s->fd,src,s->width*2);
772 }
773 /*
774 * Do last two lines
775 */
776 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
777 LINE_WITH_UV
778 }
779 /* skip a luminance line - will be filled in later */
780 lum += s->width;
781 read(s->fd,src,s->width*2);
782 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
783 LINE_WITH_UV
784 }
785 /*
786 *
787 * SECOND FIELD
788 *
789 */
790 lum=&data[s->width];
791 while (read(s->fd,src,s->width*2) < 0) {
792 usleep(10);
793 }
794 /* First (and last) two lines not interlaced */
795 for (h = 0; h < 2; h++) {
796 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
797 LINE_NO_UV
798 }
799 read(s->fd,src,s->width*2);
800 /* skip a luminance line */
801 lum += s->width;
802 }
803 lum_m1=&lum[-s->width];
804 lum_m2=&lum_m1[-s->width];
805 lum_m3=&lum_m2[-s->width];
806 memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
807 for (; h < (s->height/2)-1; h++) {
808 lum_m4=s->lum_m4_mem;
809 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
810 LINE_NO_UV
811
812 DEINT_LINE_LUM(0)
813 DEINT_LINE_LUM(4)
814 DEINT_LINE_LUM(8)
815 DEINT_LINE_LUM(12)
816 }
817 read(s->fd,src,s->width*2);
818 /* skip a luminance line */
819 lum += s->width;
820 lum_m1 += s->width;
821 lum_m2 += s->width;
822 lum_m3 += s->width;
823 // lum_m4 += s->width;
824 }
825 /*
826 * Do last line
827 */
828 lum_m4=s->lum_m4_mem;
829 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
830 LINE_NO_UV
831
832 DEINT_LINE_LUM(0)
833 DEINT_LINE_LUM(4)
834 DEINT_LINE_LUM(8)
835 DEINT_LINE_LUM(12)
836 }
837 }
838 #ifdef HAVE_MMX
839 emms();
840 #endif
841 return s->frame_size;
842 }
843
844 static int aiw_close(VideoData *s)
845 {
846 av_freep(&s->lum_m4_mem);
847 av_freep(&s->src_mem);
848 return 0;
849 }
850
851 int video_grab_init(void)
852 {
853 av_register_input_format(&video_grab_device_format);
854 return 0;
855 }