changing AVCodecContext codec -> *codec in AVStream so additions to AVCodecContext...
[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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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, 48, 1, 1000000); /* 48 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
271 return 0;
272 fail:
273 if (video_fd >= 0)
274 close(video_fd);
275 av_free(st);
276 return AVERROR_IO;
277 }
278
279 static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
280 {
281 uint8_t *ptr;
282
283 while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
284 (errno == EAGAIN || errno == EINTR));
285
286 ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
287 memcpy(buf, ptr, s->frame_size);
288
289 /* Setup to capture the next frame */
290 s->gb_buf.frame = s->gb_frame;
291 if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
292 if (errno == EAGAIN)
293 av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
294 else
295 perror("VIDIOCMCAPTURE");
296 return AVERROR_IO;
297 }
298
299 /* This is now the grabbing frame */
300 s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
301
302 return s->frame_size;
303 }
304
305 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
306 {
307 VideoData *s = s1->priv_data;
308 int64_t curtime, delay;
309 struct timespec ts;
310
311 /* Calculate the time of the next frame */
312 s->time_frame += int64_t_C(1000000);
313
314 /* wait based on the frame rate */
315 for(;;) {
316 curtime = av_gettime();
317 delay = s->time_frame * s->frame_rate_base / s->frame_rate - curtime;
318 if (delay <= 0) {
319 if (delay < int64_t_C(-1000000) * s->frame_rate_base / s->frame_rate) {
320 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
321 s->time_frame += int64_t_C(1000000);
322 }
323 break;
324 }
325 ts.tv_sec = delay / 1000000;
326 ts.tv_nsec = (delay % 1000000) * 1000;
327 nanosleep(&ts, NULL);
328 }
329
330 if (av_new_packet(pkt, s->frame_size) < 0)
331 return AVERROR_IO;
332
333 pkt->pts = curtime & ((1LL << 48) - 1);
334
335 /* read one frame */
336 if (s->aiw_enabled) {
337 return aiw_read_picture(s, pkt->data);
338 } else if (s->use_mmap) {
339 return v4l_mm_read_picture(s, pkt->data);
340 } else {
341 if (read(s->fd, pkt->data, pkt->size) != pkt->size)
342 return AVERROR_IO;
343 return s->frame_size;
344 }
345 }
346
347 static int grab_read_close(AVFormatContext *s1)
348 {
349 VideoData *s = s1->priv_data;
350
351 if (s->aiw_enabled)
352 aiw_close(s);
353
354 if (s->use_mmap)
355 munmap(s->video_buf, s->gb_buffers.size);
356
357 /* mute audio. we must force it because the BTTV driver does not
358 return its state correctly */
359 s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
360 ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
361
362 close(s->fd);
363 return 0;
364 }
365
366 static AVInputFormat video_grab_device_format = {
367 "video4linux",
368 "video grab",
369 sizeof(VideoData),
370 NULL,
371 grab_read_header,
372 grab_read_packet,
373 grab_read_close,
374 .flags = AVFMT_NOFILE,
375 };
376
377 /* All in Wonder specific stuff */
378 /* XXX: remove and merge in libavcodec/imgconvert.c */
379
380 static int aiw_init(VideoData *s)
381 {
382 int width, height;
383
384 width = s->width;
385 height = s->height;
386
387 if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
388 (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
389 (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
390
391 s->deint=0;
392 s->halfw=0;
393 if (height == s->video_cap.maxheight*2) s->deint=1;
394 if (width == s->video_cap.maxwidth/2) s->halfw=1;
395 } else {
396 av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
397 av_log(NULL, AV_LOG_ERROR, " %dx%d %dx%d %dx%d\n\n",
398 s->video_cap.maxwidth,s->video_cap.maxheight,
399 s->video_cap.maxwidth,s->video_cap.maxheight*2,
400 s->video_cap.maxwidth/2,s->video_cap.maxheight);
401 goto fail;
402 }
403
404 if (s->halfw == 0) {
405 s->src_mem = av_malloc(s->width*2);
406 } else {
407 s->src_mem = av_malloc(s->width*4);
408 }
409 if (!s->src_mem) goto fail;
410
411 s->lum_m4_mem = av_malloc(s->width);
412 if (!s->lum_m4_mem)
413 goto fail;
414 return 0;
415 fail:
416 av_freep(&s->src_mem);
417 av_freep(&s->lum_m4_mem);
418 return -1;
419 }
420
421 #ifdef HAVE_MMX
422 #include "../libavcodec/i386/mmx.h"
423
424 #define LINE_WITH_UV \
425 movq_m2r(ptr[0],mm0); \
426 movq_m2r(ptr[8],mm1); \
427 movq_r2r(mm0, mm4); \
428 punpcklbw_r2r(mm1,mm0); \
429 punpckhbw_r2r(mm1,mm4); \
430 movq_r2r(mm0,mm5); \
431 punpcklbw_r2r(mm4,mm0); \
432 punpckhbw_r2r(mm4,mm5); \
433 movq_r2r(mm0,mm1); \
434 punpcklbw_r2r(mm5,mm1); \
435 movq_r2m(mm1,lum[0]); \
436 movq_m2r(ptr[16],mm2); \
437 movq_m2r(ptr[24],mm1); \
438 movq_r2r(mm2,mm4); \
439 punpcklbw_r2r(mm1,mm2); \
440 punpckhbw_r2r(mm1,mm4); \
441 movq_r2r(mm2,mm3); \
442 punpcklbw_r2r(mm4,mm2); \
443 punpckhbw_r2r(mm4,mm3); \
444 movq_r2r(mm2,mm1); \
445 punpcklbw_r2r(mm3,mm1); \
446 movq_r2m(mm1,lum[8]); \
447 punpckhdq_r2r(mm2,mm0); \
448 punpckhdq_r2r(mm3,mm5); \
449 movq_r2m(mm0,cb[0]); \
450 movq_r2m(mm5,cr[0]);
451
452 #define LINE_NO_UV \
453 movq_m2r(ptr[0],mm0);\
454 movq_m2r(ptr[8],mm1);\
455 movq_r2r(mm0, mm4);\
456 punpcklbw_r2r(mm1,mm0); \
457 punpckhbw_r2r(mm1,mm4);\
458 movq_r2r(mm0,mm5);\
459 punpcklbw_r2r(mm4,mm0);\
460 punpckhbw_r2r(mm4,mm5);\
461 movq_r2r(mm0,mm1);\
462 punpcklbw_r2r(mm5,mm1);\
463 movq_r2m(mm1,lum[0]);\
464 movq_m2r(ptr[16],mm2);\
465 movq_m2r(ptr[24],mm1);\
466 movq_r2r(mm2,mm4);\
467 punpcklbw_r2r(mm1,mm2);\
468 punpckhbw_r2r(mm1,mm4);\
469 movq_r2r(mm2,mm3);\
470 punpcklbw_r2r(mm4,mm2);\
471 punpckhbw_r2r(mm4,mm3);\
472 movq_r2r(mm2,mm1);\
473 punpcklbw_r2r(mm3,mm1);\
474 movq_r2m(mm1,lum[8]);
475
476 #define LINE_WITHUV_AVG \
477 movq_m2r(ptr[0], mm0);\
478 movq_m2r(ptr[8], mm1);\
479 movq_r2r(mm0, mm4);\
480 punpcklbw_r2r(mm1,mm0);\
481 punpckhbw_r2r(mm1,mm4);\
482 movq_r2r(mm0,mm5);\
483 punpcklbw_r2r(mm4,mm0);\
484 punpckhbw_r2r(mm4,mm5);\
485 movq_r2r(mm0,mm1);\
486 movq_r2r(mm5,mm2);\
487 punpcklbw_r2r(mm7,mm1);\
488 punpcklbw_r2r(mm7,mm2);\
489 paddw_r2r(mm6,mm1);\
490 paddw_r2r(mm2,mm1);\
491 psraw_i2r(1,mm1);\
492 packuswb_r2r(mm7,mm1);\
493 movd_r2m(mm1,lum[0]);\
494 movq_m2r(ptr[16],mm2);\
495 movq_m2r(ptr[24],mm1);\
496 movq_r2r(mm2,mm4);\
497 punpcklbw_r2r(mm1,mm2);\
498 punpckhbw_r2r(mm1,mm4);\
499 movq_r2r(mm2,mm3);\
500 punpcklbw_r2r(mm4,mm2);\
501 punpckhbw_r2r(mm4,mm3);\
502 movq_r2r(mm2,mm1);\
503 movq_r2r(mm3,mm4);\
504 punpcklbw_r2r(mm7,mm1);\
505 punpcklbw_r2r(mm7,mm4);\
506 paddw_r2r(mm6,mm1);\
507 paddw_r2r(mm4,mm1);\
508 psraw_i2r(1,mm1);\
509 packuswb_r2r(mm7,mm1);\
510 movd_r2m(mm1,lum[4]);\
511 punpckhbw_r2r(mm7,mm0);\
512 punpckhbw_r2r(mm7,mm2);\
513 paddw_r2r(mm6,mm0);\
514 paddw_r2r(mm2,mm0);\
515 psraw_i2r(1,mm0);\
516 packuswb_r2r(mm7,mm0);\
517 punpckhbw_r2r(mm7,mm5);\
518 punpckhbw_r2r(mm7,mm3);\
519 paddw_r2r(mm6,mm5);\
520 paddw_r2r(mm3,mm5);\
521 psraw_i2r(1,mm5);\
522 packuswb_r2r(mm7,mm5);\
523 movd_r2m(mm0,cb[0]);\
524 movd_r2m(mm5,cr[0]);
525
526 #define LINE_NOUV_AVG \
527 movq_m2r(ptr[0],mm0);\
528 movq_m2r(ptr[8],mm1);\
529 pand_r2r(mm5,mm0);\
530 pand_r2r(mm5,mm1);\
531 pmaddwd_r2r(mm6,mm0);\
532 pmaddwd_r2r(mm6,mm1);\
533 packssdw_r2r(mm1,mm0);\
534 paddw_r2r(mm6,mm0);\
535 psraw_i2r(1,mm0);\
536 movq_m2r(ptr[16],mm2);\
537 movq_m2r(ptr[24],mm3);\
538 pand_r2r(mm5,mm2);\
539 pand_r2r(mm5,mm3);\
540 pmaddwd_r2r(mm6,mm2);\
541 pmaddwd_r2r(mm6,mm3);\
542 packssdw_r2r(mm3,mm2);\
543 paddw_r2r(mm6,mm2);\
544 psraw_i2r(1,mm2);\
545 packuswb_r2r(mm2,mm0);\
546 movq_r2m(mm0,lum[0]);
547
548 #define DEINT_LINE_LUM(ptroff) \
549 movd_m2r(lum_m4[(ptroff)],mm0);\
550 movd_m2r(lum_m3[(ptroff)],mm1);\
551 movd_m2r(lum_m2[(ptroff)],mm2);\
552 movd_m2r(lum_m1[(ptroff)],mm3);\
553 movd_m2r(lum[(ptroff)],mm4);\
554 punpcklbw_r2r(mm7,mm0);\
555 movd_r2m(mm2,lum_m4[(ptroff)]);\
556 punpcklbw_r2r(mm7,mm1);\
557 punpcklbw_r2r(mm7,mm2);\
558 punpcklbw_r2r(mm7,mm3);\
559 punpcklbw_r2r(mm7,mm4);\
560 psllw_i2r(2,mm1);\
561 psllw_i2r(1,mm2);\
562 paddw_r2r(mm6,mm1);\
563 psllw_i2r(2,mm3);\
564 paddw_r2r(mm2,mm1);\
565 paddw_r2r(mm4,mm0);\
566 paddw_r2r(mm3,mm1);\
567 psubusw_r2r(mm0,mm1);\
568 psrlw_i2r(3,mm1);\
569 packuswb_r2r(mm7,mm1);\
570 movd_r2m(mm1,lum_m2[(ptroff)]);
571
572 #else
573 #include "../libavcodec/dsputil.h"
574
575 #define LINE_WITH_UV \
576 lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
577 cb[0]=ptr[1];cb[1]=ptr[5];\
578 cr[0]=ptr[3];cr[1]=ptr[7];\
579 lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
580 cb[2]=ptr[9];cb[3]=ptr[13];\
581 cr[2]=ptr[11];cr[3]=ptr[15];\
582 lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
583 cb[4]=ptr[17];cb[5]=ptr[21];\
584 cr[4]=ptr[19];cr[5]=ptr[23];\
585 lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
586 cb[6]=ptr[25];cb[7]=ptr[29];\
587 cr[6]=ptr[27];cr[7]=ptr[31];
588
589 #define LINE_NO_UV \
590 lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
591 lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
592 lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
593 lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
594
595 #define LINE_WITHUV_AVG \
596 sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
597 sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
598 sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
599 sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
600 sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
601 sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
602 sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
603 sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
604 sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
605 sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
606 sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
607 sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
608 sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
609 sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
610 sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
611 sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
612
613 #define LINE_NOUV_AVG \
614 sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
615 sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
616 sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
617 sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
618 sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
619 sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
620 sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
621 sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
622
623 #define DEINT_LINE_LUM(ptroff) \
624 sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
625 lum_m4[(ptroff)]=lum_m2[(ptroff)];\
626 lum_m2[(ptroff)]=cm[(sum+4)>>3];\
627 sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
628 lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
629 lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
630 sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
631 lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
632 lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
633 sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
634 lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
635 lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
636
637 #endif
638
639
640 /* Read two fields separately. */
641 static int aiw_read_picture(VideoData *s, uint8_t *data)
642 {
643 uint8_t *ptr, *lum, *cb, *cr;
644 int h;
645 #ifndef HAVE_MMX
646 int sum;
647 #endif
648 uint8_t* src = s->src_mem;
649 uint8_t *ptrend = &src[s->width*2];
650 lum=data;
651 cb=&lum[s->width*s->height];
652 cr=&cb[(s->width*s->height)/4];
653 if (s->deint == 0 && s->halfw == 0) {
654 while (read(s->fd,src,s->width*2) < 0) {
655 usleep(100);
656 }
657 for (h = 0; h < s->height-2; h+=2) {
658 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
659 LINE_WITH_UV
660 }
661 read(s->fd,src,s->width*2);
662 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
663 LINE_NO_UV
664 }
665 read(s->fd,src,s->width*2);
666 }
667 /*
668 * Do last two lines
669 */
670 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
671 LINE_WITH_UV
672 }
673 read(s->fd,src,s->width*2);
674 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
675 LINE_NO_UV
676 }
677 /* drop second field */
678 while (read(s->fd,src,s->width*2) < 0) {
679 usleep(100);
680 }
681 for (h = 0; h < s->height - 1; h++) {
682 read(s->fd,src,s->width*2);
683 }
684 } else if (s->halfw == 1) {
685 #ifdef HAVE_MMX
686 mmx_t rounder;
687 mmx_t masker;
688 rounder.uw[0]=1;
689 rounder.uw[1]=1;
690 rounder.uw[2]=1;
691 rounder.uw[3]=1;
692 masker.ub[0]=0xff;
693 masker.ub[1]=0;
694 masker.ub[2]=0xff;
695 masker.ub[3]=0;
696 masker.ub[4]=0xff;
697 masker.ub[5]=0;
698 masker.ub[6]=0xff;
699 masker.ub[7]=0;
700 pxor_r2r(mm7,mm7);
701 movq_m2r(rounder,mm6);
702 #endif
703 while (read(s->fd,src,s->width*4) < 0) {
704 usleep(100);
705 }
706 ptrend = &src[s->width*4];
707 for (h = 0; h < s->height-2; h+=2) {
708 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
709 LINE_WITHUV_AVG
710 }
711 read(s->fd,src,s->width*4);
712 #ifdef HAVE_MMX
713 movq_m2r(masker,mm5);
714 #endif
715 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
716 LINE_NOUV_AVG
717 }
718 read(s->fd,src,s->width*4);
719 }
720 /*
721 * Do last two lines
722 */
723 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
724 LINE_WITHUV_AVG
725 }
726 read(s->fd,src,s->width*4);
727 #ifdef HAVE_MMX
728 movq_m2r(masker,mm5);
729 #endif
730 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
731 LINE_NOUV_AVG
732 }
733 /* drop second field */
734 while (read(s->fd,src,s->width*4) < 0) {
735 usleep(100);
736 }
737 for (h = 0; h < s->height - 1; h++) {
738 read(s->fd,src,s->width*4);
739 }
740 } else {
741 uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
742 #ifdef HAVE_MMX
743 mmx_t rounder;
744 rounder.uw[0]=4;
745 rounder.uw[1]=4;
746 rounder.uw[2]=4;
747 rounder.uw[3]=4;
748 movq_m2r(rounder,mm6);
749 pxor_r2r(mm7,mm7);
750 #else
751 uint8_t *cm = cropTbl + MAX_NEG_CROP;
752 #endif
753
754 /* read two fields and deinterlace them */
755 while (read(s->fd,src,s->width*2) < 0) {
756 usleep(100);
757 }
758 for (h = 0; h < (s->height/2)-2; h+=2) {
759 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
760 LINE_WITH_UV
761 }
762 read(s->fd,src,s->width*2);
763 /* skip a luminance line - will be filled in later */
764 lum += s->width;
765 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
766 LINE_WITH_UV
767 }
768 /* skip a luminance line - will be filled in later */
769 lum += s->width;
770 read(s->fd,src,s->width*2);
771 }
772 /*
773 * Do last two lines
774 */
775 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
776 LINE_WITH_UV
777 }
778 /* skip a luminance line - will be filled in later */
779 lum += s->width;
780 read(s->fd,src,s->width*2);
781 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
782 LINE_WITH_UV
783 }
784 /*
785 *
786 * SECOND FIELD
787 *
788 */
789 lum=&data[s->width];
790 while (read(s->fd,src,s->width*2) < 0) {
791 usleep(10);
792 }
793 /* First (and last) two lines not interlaced */
794 for (h = 0; h < 2; h++) {
795 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
796 LINE_NO_UV
797 }
798 read(s->fd,src,s->width*2);
799 /* skip a luminance line */
800 lum += s->width;
801 }
802 lum_m1=&lum[-s->width];
803 lum_m2=&lum_m1[-s->width];
804 lum_m3=&lum_m2[-s->width];
805 memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
806 for (; h < (s->height/2)-1; h++) {
807 lum_m4=s->lum_m4_mem;
808 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
809 LINE_NO_UV
810
811 DEINT_LINE_LUM(0)
812 DEINT_LINE_LUM(4)
813 DEINT_LINE_LUM(8)
814 DEINT_LINE_LUM(12)
815 }
816 read(s->fd,src,s->width*2);
817 /* skip a luminance line */
818 lum += s->width;
819 lum_m1 += s->width;
820 lum_m2 += s->width;
821 lum_m3 += s->width;
822 // lum_m4 += s->width;
823 }
824 /*
825 * Do last line
826 */
827 lum_m4=s->lum_m4_mem;
828 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
829 LINE_NO_UV
830
831 DEINT_LINE_LUM(0)
832 DEINT_LINE_LUM(4)
833 DEINT_LINE_LUM(8)
834 DEINT_LINE_LUM(12)
835 }
836 }
837 #ifdef HAVE_MMX
838 emms();
839 #endif
840 return s->frame_size;
841 }
842
843 static int aiw_close(VideoData *s)
844 {
845 av_freep(&s->lum_m4_mem);
846 av_freep(&s->src_mem);
847 return 0;
848 }
849
850 int video_grab_init(void)
851 {
852 av_register_input_format(&video_grab_device_format);
853 return 0;
854 }