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source: vbox/trunk/src/libs/ffmpeg-20060710/libavformat/grab.c@ 8234

Last change on this file since 8234 was 5776, checked in by vboxsync, 17 years ago

ffmpeg: exported to OSE
File size: 28.1 KB
Line 
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
29typedef 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
54static int aiw_init(VideoData *s);
55static int aiw_read_picture(VideoData *s, uint8_t *data);
56static int aiw_close(VideoData *s);
57
58static 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, desired_depth;
66 struct video_tuner tuner;
67 struct video_audio audio;
68 struct video_picture pict;
69 const char *video_device;
70 int j;
71
72 if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
73 av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
74 ap->width, ap->height, ap->time_base.den);
75
76 return -1;
77 }
78
79 width = ap->width;
80 height = ap->height;
81 frame_rate = ap->time_base.den;
82 frame_rate_base = ap->time_base.num;
83
84 if((unsigned)width > 32767 || (unsigned)height > 32767) {
85 av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
86 width, height);
87
88 return -1;
89 }
90
91 st = av_new_stream(s1, 0);
92 if (!st)
93 return -ENOMEM;
94 av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
95
96 s->width = width;
97 s->height = height;
98 s->frame_rate = frame_rate;
99 s->frame_rate_base = frame_rate_base;
100
101 video_device = ap->device;
102 if (!video_device)
103 video_device = "/dev/video";
104 video_fd = open(video_device, O_RDWR);
105 if (video_fd < 0) {
106 perror(video_device);
107 goto fail;
108 }
109
110 if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
111 perror("VIDIOCGCAP");
112 goto fail;
113 }
114
115 if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
116 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
117 goto fail;
118 }
119
120 desired_palette = -1;
121 desired_depth = -1;
122 if (ap->pix_fmt == PIX_FMT_YUV420P) {
123 desired_palette = VIDEO_PALETTE_YUV420P;
124 desired_depth = 12;
125 } else if (ap->pix_fmt == PIX_FMT_YUV422) {
126 desired_palette = VIDEO_PALETTE_YUV422;
127 desired_depth = 16;
128 } else if (ap->pix_fmt == PIX_FMT_BGR24) {
129 desired_palette = VIDEO_PALETTE_RGB24;
130 desired_depth = 24;
131 }
132
133 /* set tv standard */
134 if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
135 if (!strcasecmp(ap->standard, "pal"))
136 tuner.mode = VIDEO_MODE_PAL;
137 else if (!strcasecmp(ap->standard, "secam"))
138 tuner.mode = VIDEO_MODE_SECAM;
139 else
140 tuner.mode = VIDEO_MODE_NTSC;
141 ioctl(video_fd, VIDIOCSTUNER, &tuner);
142 }
143
144 /* unmute audio */
145 audio.audio = 0;
146 ioctl(video_fd, VIDIOCGAUDIO, &audio);
147 memcpy(&s->audio_saved, &audio, sizeof(audio));
148 audio.flags &= ~VIDEO_AUDIO_MUTE;
149 ioctl(video_fd, VIDIOCSAUDIO, &audio);
150
151 ioctl(video_fd, VIDIOCGPICT, &pict);
152#if 0
153 printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
154 pict.colour,
155 pict.hue,
156 pict.brightness,
157 pict.contrast,
158 pict.whiteness);
159#endif
160 /* try to choose a suitable video format */
161 pict.palette = desired_palette;
162 pict.depth= desired_depth;
163 if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
164 pict.palette=VIDEO_PALETTE_YUV420P;
165 pict.depth=12;
166 ret = ioctl(video_fd, VIDIOCSPICT, &pict);
167 if (ret < 0) {
168 pict.palette=VIDEO_PALETTE_YUV422;
169 pict.depth=16;
170 ret = ioctl(video_fd, VIDIOCSPICT, &pict);
171 if (ret < 0) {
172 pict.palette=VIDEO_PALETTE_RGB24;
173 pict.depth=24;
174 ret = ioctl(video_fd, VIDIOCSPICT, &pict);
175 if (ret < 0)
176 goto fail1;
177 }
178 }
179 }
180
181 ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
182 if (ret < 0) {
183 /* try to use read based access */
184 struct video_window win;
185 int val;
186
187 win.x = 0;
188 win.y = 0;
189 win.width = width;
190 win.height = height;
191 win.chromakey = -1;
192 win.flags = 0;
193
194 ioctl(video_fd, VIDIOCSWIN, &win);
195
196 s->frame_format = pict.palette;
197
198 val = 1;
199 ioctl(video_fd, VIDIOCCAPTURE, &val);
200
201 s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
202 s->use_mmap = 0;
203
204 /* ATI All In Wonder automatic activation */
205 if (!strcmp(s->video_cap.name, "Km")) {
206 if (aiw_init(s) < 0)
207 goto fail;
208 s->aiw_enabled = 1;
209 /* force 420P format because convertion from YUV422 to YUV420P
210 is done in this driver (ugly) */
211 s->frame_format = VIDEO_PALETTE_YUV420P;
212 }
213 } else {
214 s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
215 if ((unsigned char*)-1 == s->video_buf) {
216 perror("mmap");
217 goto fail;
218 }
219 s->gb_frame = 0;
220 s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
221
222 /* start to grab the first frame */
223 s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
224 s->gb_buf.height = height;
225 s->gb_buf.width = width;
226 s->gb_buf.format = pict.palette;
227
228 ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
229 if (ret < 0) {
230 if (errno != EAGAIN) {
231 fail1:
232 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
233 } else {
234 av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
235 }
236 goto fail;
237 }
238 for (j = 1; j < s->gb_buffers.frames; j++) {
239 s->gb_buf.frame = j;
240 ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
241 }
242 s->frame_format = s->gb_buf.format;
243 s->use_mmap = 1;
244 }
245
246 switch(s->frame_format) {
247 case VIDEO_PALETTE_YUV420P:
248 frame_size = (width * height * 3) / 2;
249 st->codec->pix_fmt = PIX_FMT_YUV420P;
250 break;
251 case VIDEO_PALETTE_YUV422:
252 frame_size = width * height * 2;
253 st->codec->pix_fmt = PIX_FMT_YUV422;
254 break;
255 case VIDEO_PALETTE_RGB24:
256 frame_size = width * height * 3;
257 st->codec->pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */
258 break;
259 default:
260 goto fail;
261 }
262 s->fd = video_fd;
263 s->frame_size = frame_size;
264
265 st->codec->codec_type = CODEC_TYPE_VIDEO;
266 st->codec->codec_id = CODEC_ID_RAWVIDEO;
267 st->codec->width = width;
268 st->codec->height = height;
269 st->codec->time_base.den = frame_rate;
270 st->codec->time_base.num = frame_rate_base;
271 st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
272
273 return 0;
274 fail:
275 if (video_fd >= 0)
276 close(video_fd);
277 av_free(st);
278 return AVERROR_IO;
279}
280
281static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
282{
283 uint8_t *ptr;
284
285 while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
286 (errno == EAGAIN || errno == EINTR));
287
288 ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
289 memcpy(buf, ptr, s->frame_size);
290
291 /* Setup to capture the next frame */
292 s->gb_buf.frame = s->gb_frame;
293 if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
294 if (errno == EAGAIN)
295 av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
296 else
297 perror("VIDIOCMCAPTURE");
298 return AVERROR_IO;
299 }
300
301 /* This is now the grabbing frame */
302 s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
303
304 return s->frame_size;
305}
306
307static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
308{
309 VideoData *s = s1->priv_data;
310 int64_t curtime, delay;
311 struct timespec ts;
312
313 /* Calculate the time of the next frame */
314 s->time_frame += int64_t_C(1000000);
315
316 /* wait based on the frame rate */
317 for(;;) {
318 curtime = av_gettime();
319 delay = s->time_frame * s->frame_rate_base / s->frame_rate - curtime;
320 if (delay <= 0) {
321 if (delay < int64_t_C(-1000000) * s->frame_rate_base / s->frame_rate) {
322 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
323 s->time_frame += int64_t_C(1000000);
324 }
325 break;
326 }
327 ts.tv_sec = delay / 1000000;
328 ts.tv_nsec = (delay % 1000000) * 1000;
329 nanosleep(&ts, NULL);
330 }
331
332 if (av_new_packet(pkt, s->frame_size) < 0)
333 return AVERROR_IO;
334
335 pkt->pts = curtime;
336
337 /* read one frame */
338 if (s->aiw_enabled) {
339 return aiw_read_picture(s, pkt->data);
340 } else if (s->use_mmap) {
341 return v4l_mm_read_picture(s, pkt->data);
342 } else {
343 if (read(s->fd, pkt->data, pkt->size) != pkt->size)
344 return AVERROR_IO;
345 return s->frame_size;
346 }
347}
348
349static int grab_read_close(AVFormatContext *s1)
350{
351 VideoData *s = s1->priv_data;
352
353 if (s->aiw_enabled)
354 aiw_close(s);
355
356 if (s->use_mmap)
357 munmap(s->video_buf, s->gb_buffers.size);
358
359 /* mute audio. we must force it because the BTTV driver does not
360 return its state correctly */
361 s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
362 ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
363
364 close(s->fd);
365 return 0;
366}
367
368static AVInputFormat video_grab_device_demuxer = {
369 "video4linux",
370 "video grab",
371 sizeof(VideoData),
372 NULL,
373 grab_read_header,
374 grab_read_packet,
375 grab_read_close,
376 .flags = AVFMT_NOFILE,
377};
378
379/* All in Wonder specific stuff */
380/* XXX: remove and merge in libavcodec/imgconvert.c */
381
382static int aiw_init(VideoData *s)
383{
384 int width, height;
385
386 width = s->width;
387 height = s->height;
388
389 if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
390 (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
391 (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
392
393 s->deint=0;
394 s->halfw=0;
395 if (height == s->video_cap.maxheight*2) s->deint=1;
396 if (width == s->video_cap.maxwidth/2) s->halfw=1;
397 } else {
398 av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
399 av_log(NULL, AV_LOG_ERROR, " %dx%d %dx%d %dx%d\n\n",
400 s->video_cap.maxwidth,s->video_cap.maxheight,
401 s->video_cap.maxwidth,s->video_cap.maxheight*2,
402 s->video_cap.maxwidth/2,s->video_cap.maxheight);
403 goto fail;
404 }
405
406 if (s->halfw == 0) {
407 s->src_mem = av_malloc(s->width*2);
408 } else {
409 s->src_mem = av_malloc(s->width*4);
410 }
411 if (!s->src_mem) goto fail;
412
413 s->lum_m4_mem = av_malloc(s->width);
414 if (!s->lum_m4_mem)
415 goto fail;
416 return 0;
417 fail:
418 av_freep(&s->src_mem);
419 av_freep(&s->lum_m4_mem);
420 return -1;
421}
422
423#ifdef HAVE_MMX
424#include "libavcodec/i386/mmx.h"
425
426#define LINE_WITH_UV \
427 movq_m2r(ptr[0],mm0); \
428 movq_m2r(ptr[8],mm1); \
429 movq_r2r(mm0, mm4); \
430 punpcklbw_r2r(mm1,mm0); \
431 punpckhbw_r2r(mm1,mm4); \
432 movq_r2r(mm0,mm5); \
433 punpcklbw_r2r(mm4,mm0); \
434 punpckhbw_r2r(mm4,mm5); \
435 movq_r2r(mm0,mm1); \
436 punpcklbw_r2r(mm5,mm1); \
437 movq_r2m(mm1,lum[0]); \
438 movq_m2r(ptr[16],mm2); \
439 movq_m2r(ptr[24],mm1); \
440 movq_r2r(mm2,mm4); \
441 punpcklbw_r2r(mm1,mm2); \
442 punpckhbw_r2r(mm1,mm4); \
443 movq_r2r(mm2,mm3); \
444 punpcklbw_r2r(mm4,mm2); \
445 punpckhbw_r2r(mm4,mm3); \
446 movq_r2r(mm2,mm1); \
447 punpcklbw_r2r(mm3,mm1); \
448 movq_r2m(mm1,lum[8]); \
449 punpckhdq_r2r(mm2,mm0); \
450 punpckhdq_r2r(mm3,mm5); \
451 movq_r2m(mm0,cb[0]); \
452 movq_r2m(mm5,cr[0]);
453
454#define LINE_NO_UV \
455 movq_m2r(ptr[0],mm0);\
456 movq_m2r(ptr[8],mm1);\
457 movq_r2r(mm0, mm4);\
458 punpcklbw_r2r(mm1,mm0); \
459 punpckhbw_r2r(mm1,mm4);\
460 movq_r2r(mm0,mm5);\
461 punpcklbw_r2r(mm4,mm0);\
462 punpckhbw_r2r(mm4,mm5);\
463 movq_r2r(mm0,mm1);\
464 punpcklbw_r2r(mm5,mm1);\
465 movq_r2m(mm1,lum[0]);\
466 movq_m2r(ptr[16],mm2);\
467 movq_m2r(ptr[24],mm1);\
468 movq_r2r(mm2,mm4);\
469 punpcklbw_r2r(mm1,mm2);\
470 punpckhbw_r2r(mm1,mm4);\
471 movq_r2r(mm2,mm3);\
472 punpcklbw_r2r(mm4,mm2);\
473 punpckhbw_r2r(mm4,mm3);\
474 movq_r2r(mm2,mm1);\
475 punpcklbw_r2r(mm3,mm1);\
476 movq_r2m(mm1,lum[8]);
477
478#define LINE_WITHUV_AVG \
479 movq_m2r(ptr[0], mm0);\
480 movq_m2r(ptr[8], mm1);\
481 movq_r2r(mm0, mm4);\
482 punpcklbw_r2r(mm1,mm0);\
483 punpckhbw_r2r(mm1,mm4);\
484 movq_r2r(mm0,mm5);\
485 punpcklbw_r2r(mm4,mm0);\
486 punpckhbw_r2r(mm4,mm5);\
487 movq_r2r(mm0,mm1);\
488 movq_r2r(mm5,mm2);\
489 punpcklbw_r2r(mm7,mm1);\
490 punpcklbw_r2r(mm7,mm2);\
491 paddw_r2r(mm6,mm1);\
492 paddw_r2r(mm2,mm1);\
493 psraw_i2r(1,mm1);\
494 packuswb_r2r(mm7,mm1);\
495 movd_r2m(mm1,lum[0]);\
496 movq_m2r(ptr[16],mm2);\
497 movq_m2r(ptr[24],mm1);\
498 movq_r2r(mm2,mm4);\
499 punpcklbw_r2r(mm1,mm2);\
500 punpckhbw_r2r(mm1,mm4);\
501 movq_r2r(mm2,mm3);\
502 punpcklbw_r2r(mm4,mm2);\
503 punpckhbw_r2r(mm4,mm3);\
504 movq_r2r(mm2,mm1);\
505 movq_r2r(mm3,mm4);\
506 punpcklbw_r2r(mm7,mm1);\
507 punpcklbw_r2r(mm7,mm4);\
508 paddw_r2r(mm6,mm1);\
509 paddw_r2r(mm4,mm1);\
510 psraw_i2r(1,mm1);\
511 packuswb_r2r(mm7,mm1);\
512 movd_r2m(mm1,lum[4]);\
513 punpckhbw_r2r(mm7,mm0);\
514 punpckhbw_r2r(mm7,mm2);\
515 paddw_r2r(mm6,mm0);\
516 paddw_r2r(mm2,mm0);\
517 psraw_i2r(1,mm0);\
518 packuswb_r2r(mm7,mm0);\
519 punpckhbw_r2r(mm7,mm5);\
520 punpckhbw_r2r(mm7,mm3);\
521 paddw_r2r(mm6,mm5);\
522 paddw_r2r(mm3,mm5);\
523 psraw_i2r(1,mm5);\
524 packuswb_r2r(mm7,mm5);\
525 movd_r2m(mm0,cb[0]);\
526 movd_r2m(mm5,cr[0]);
527
528#define LINE_NOUV_AVG \
529 movq_m2r(ptr[0],mm0);\
530 movq_m2r(ptr[8],mm1);\
531 pand_r2r(mm5,mm0);\
532 pand_r2r(mm5,mm1);\
533 pmaddwd_r2r(mm6,mm0);\
534 pmaddwd_r2r(mm6,mm1);\
535 packssdw_r2r(mm1,mm0);\
536 paddw_r2r(mm6,mm0);\
537 psraw_i2r(1,mm0);\
538 movq_m2r(ptr[16],mm2);\
539 movq_m2r(ptr[24],mm3);\
540 pand_r2r(mm5,mm2);\
541 pand_r2r(mm5,mm3);\
542 pmaddwd_r2r(mm6,mm2);\
543 pmaddwd_r2r(mm6,mm3);\
544 packssdw_r2r(mm3,mm2);\
545 paddw_r2r(mm6,mm2);\
546 psraw_i2r(1,mm2);\
547 packuswb_r2r(mm2,mm0);\
548 movq_r2m(mm0,lum[0]);
549
550#define DEINT_LINE_LUM(ptroff) \
551 movd_m2r(lum_m4[(ptroff)],mm0);\
552 movd_m2r(lum_m3[(ptroff)],mm1);\
553 movd_m2r(lum_m2[(ptroff)],mm2);\
554 movd_m2r(lum_m1[(ptroff)],mm3);\
555 movd_m2r(lum[(ptroff)],mm4);\
556 punpcklbw_r2r(mm7,mm0);\
557 movd_r2m(mm2,lum_m4[(ptroff)]);\
558 punpcklbw_r2r(mm7,mm1);\
559 punpcklbw_r2r(mm7,mm2);\
560 punpcklbw_r2r(mm7,mm3);\
561 punpcklbw_r2r(mm7,mm4);\
562 psllw_i2r(2,mm1);\
563 psllw_i2r(1,mm2);\
564 paddw_r2r(mm6,mm1);\
565 psllw_i2r(2,mm3);\
566 paddw_r2r(mm2,mm1);\
567 paddw_r2r(mm4,mm0);\
568 paddw_r2r(mm3,mm1);\
569 psubusw_r2r(mm0,mm1);\
570 psrlw_i2r(3,mm1);\
571 packuswb_r2r(mm7,mm1);\
572 movd_r2m(mm1,lum_m2[(ptroff)]);
573
574#else
575#include "libavcodec/dsputil.h"
576
577#define LINE_WITH_UV \
578 lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
579 cb[0]=ptr[1];cb[1]=ptr[5];\
580 cr[0]=ptr[3];cr[1]=ptr[7];\
581 lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
582 cb[2]=ptr[9];cb[3]=ptr[13];\
583 cr[2]=ptr[11];cr[3]=ptr[15];\
584 lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
585 cb[4]=ptr[17];cb[5]=ptr[21];\
586 cr[4]=ptr[19];cr[5]=ptr[23];\
587 lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
588 cb[6]=ptr[25];cb[7]=ptr[29];\
589 cr[6]=ptr[27];cr[7]=ptr[31];
590
591#define LINE_NO_UV \
592 lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
593 lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
594 lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
595 lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
596
597#define LINE_WITHUV_AVG \
598 sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
599 sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
600 sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
601 sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
602 sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
603 sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
604 sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
605 sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
606 sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
607 sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
608 sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
609 sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
610 sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
611 sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
612 sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
613 sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
614
615#define LINE_NOUV_AVG \
616 sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
617 sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
618 sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
619 sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
620 sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
621 sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
622 sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
623 sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
624
625#define DEINT_LINE_LUM(ptroff) \
626 sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
627 lum_m4[(ptroff)]=lum_m2[(ptroff)];\
628 lum_m2[(ptroff)]=cm[(sum+4)>>3];\
629 sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
630 lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
631 lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
632 sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
633 lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
634 lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
635 sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
636 lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
637 lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
638
639#endif
640
641
642/* Read two fields separately. */
643static int aiw_read_picture(VideoData *s, uint8_t *data)
644{
645 uint8_t *ptr, *lum, *cb, *cr;
646 int h;
647#ifndef HAVE_MMX
648 int sum;
649#endif
650 uint8_t* src = s->src_mem;
651 uint8_t *ptrend = &src[s->width*2];
652 lum=data;
653 cb=&lum[s->width*s->height];
654 cr=&cb[(s->width*s->height)/4];
655 if (s->deint == 0 && s->halfw == 0) {
656 while (read(s->fd,src,s->width*2) < 0) {
657 usleep(100);
658 }
659 for (h = 0; h < s->height-2; h+=2) {
660 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
661 LINE_WITH_UV
662 }
663 read(s->fd,src,s->width*2);
664 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
665 LINE_NO_UV
666 }
667 read(s->fd,src,s->width*2);
668 }
669 /*
670 * Do last two lines
671 */
672 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
673 LINE_WITH_UV
674 }
675 read(s->fd,src,s->width*2);
676 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
677 LINE_NO_UV
678 }
679 /* drop second field */
680 while (read(s->fd,src,s->width*2) < 0) {
681 usleep(100);
682 }
683 for (h = 0; h < s->height - 1; h++) {
684 read(s->fd,src,s->width*2);
685 }
686 } else if (s->halfw == 1) {
687#ifdef HAVE_MMX
688 mmx_t rounder;
689 mmx_t masker;
690 rounder.uw[0]=1;
691 rounder.uw[1]=1;
692 rounder.uw[2]=1;
693 rounder.uw[3]=1;
694 masker.ub[0]=0xff;
695 masker.ub[1]=0;
696 masker.ub[2]=0xff;
697 masker.ub[3]=0;
698 masker.ub[4]=0xff;
699 masker.ub[5]=0;
700 masker.ub[6]=0xff;
701 masker.ub[7]=0;
702 pxor_r2r(mm7,mm7);
703 movq_m2r(rounder,mm6);
704#endif
705 while (read(s->fd,src,s->width*4) < 0) {
706 usleep(100);
707 }
708 ptrend = &src[s->width*4];
709 for (h = 0; h < s->height-2; h+=2) {
710 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
711 LINE_WITHUV_AVG
712 }
713 read(s->fd,src,s->width*4);
714#ifdef HAVE_MMX
715 movq_m2r(masker,mm5);
716#endif
717 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
718 LINE_NOUV_AVG
719 }
720 read(s->fd,src,s->width*4);
721 }
722 /*
723 * Do last two lines
724 */
725 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
726 LINE_WITHUV_AVG
727 }
728 read(s->fd,src,s->width*4);
729#ifdef HAVE_MMX
730 movq_m2r(masker,mm5);
731#endif
732 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
733 LINE_NOUV_AVG
734 }
735 /* drop second field */
736 while (read(s->fd,src,s->width*4) < 0) {
737 usleep(100);
738 }
739 for (h = 0; h < s->height - 1; h++) {
740 read(s->fd,src,s->width*4);
741 }
742 } else {
743 uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
744#ifdef HAVE_MMX
745 mmx_t rounder;
746 rounder.uw[0]=4;
747 rounder.uw[1]=4;
748 rounder.uw[2]=4;
749 rounder.uw[3]=4;
750 movq_m2r(rounder,mm6);
751 pxor_r2r(mm7,mm7);
752#else
753 uint8_t *cm = cropTbl + MAX_NEG_CROP;
754#endif
755
756 /* read two fields and deinterlace them */
757 while (read(s->fd,src,s->width*2) < 0) {
758 usleep(100);
759 }
760 for (h = 0; h < (s->height/2)-2; h+=2) {
761 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
762 LINE_WITH_UV
763 }
764 read(s->fd,src,s->width*2);
765 /* skip a luminance line - will be filled in later */
766 lum += s->width;
767 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
768 LINE_WITH_UV
769 }
770 /* skip a luminance line - will be filled in later */
771 lum += s->width;
772 read(s->fd,src,s->width*2);
773 }
774 /*
775 * Do last two lines
776 */
777 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
778 LINE_WITH_UV
779 }
780 /* skip a luminance line - will be filled in later */
781 lum += s->width;
782 read(s->fd,src,s->width*2);
783 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
784 LINE_WITH_UV
785 }
786 /*
787 *
788 * SECOND FIELD
789 *
790 */
791 lum=&data[s->width];
792 while (read(s->fd,src,s->width*2) < 0) {
793 usleep(10);
794 }
795 /* First (and last) two lines not interlaced */
796 for (h = 0; h < 2; h++) {
797 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
798 LINE_NO_UV
799 }
800 read(s->fd,src,s->width*2);
801 /* skip a luminance line */
802 lum += s->width;
803 }
804 lum_m1=&lum[-s->width];
805 lum_m2=&lum_m1[-s->width];
806 lum_m3=&lum_m2[-s->width];
807 memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
808 for (; h < (s->height/2)-1; h++) {
809 lum_m4=s->lum_m4_mem;
810 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
811 LINE_NO_UV
812
813 DEINT_LINE_LUM(0)
814 DEINT_LINE_LUM(4)
815 DEINT_LINE_LUM(8)
816 DEINT_LINE_LUM(12)
817 }
818 read(s->fd,src,s->width*2);
819 /* skip a luminance line */
820 lum += s->width;
821 lum_m1 += s->width;
822 lum_m2 += s->width;
823 lum_m3 += s->width;
824 // lum_m4 += s->width;
825 }
826 /*
827 * Do last line
828 */
829 lum_m4=s->lum_m4_mem;
830 for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
831 LINE_NO_UV
832
833 DEINT_LINE_LUM(0)
834 DEINT_LINE_LUM(4)
835 DEINT_LINE_LUM(8)
836 DEINT_LINE_LUM(12)
837 }
838 }
839#ifdef HAVE_MMX
840 emms();
841#endif
842 return s->frame_size;
843}
844
845static int aiw_close(VideoData *s)
846{
847 av_freep(&s->lum_m4_mem);
848 av_freep(&s->src_mem);
849 return 0;
850}
851
852int video_grab_init(void)
853{
854 av_register_input_format(&video_grab_device_demuxer);
855 return 0;
856}
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