2 * Linux video grab interface
3 * Copyright (c) 2000,2001 Fabrice Bellard.
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.
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.
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
22 #include <sys/ioctl.h>
25 #define _LINUX_TIME_H 1
26 #include <linux/videodev.h>
31 int frame_format
; /* see VIDEO_PALETTE_xxx */
38 struct video_capability video_cap
;
39 struct video_audio audio_saved
;
41 struct video_mbuf gb_buffers
;
42 struct video_mmap gb_buf
;
45 /* ATI All In Wonder specific stuff */
46 /* XXX: remove and merge in libavcodec/imgconvert.c */
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
);
58 static int grab_read_header(AVFormatContext
*s1
, AVFormatParameters
*ap
)
60 VideoData
*s
= s1
->priv_data
;
63 int video_fd
, frame_size
;
64 int ret
, frame_rate
, frame_rate_base
;
66 struct video_tuner tuner
;
67 struct video_audio audio
;
68 const char *video_device
;
71 if (!ap
|| ap
->width
<= 0 || ap
->height
<= 0 || ap
->time_base
.den
<= 0)
76 frame_rate
= ap
->time_base
.den
;
77 frame_rate_base
= ap
->time_base
.num
;
79 if((unsigned)width
> 32767 || (unsigned)height
> 32767)
82 st
= av_new_stream(s1
, 0);
85 av_set_pts_info(st
, 64, 1, 1000000); /* 64 bits pts in us */
89 s
->frame_rate
= frame_rate
;
90 s
->frame_rate_base
= frame_rate_base
;
92 video_device
= ap
->device
;
94 video_device
= "/dev/video";
95 video_fd
= open(video_device
, O_RDWR
);
101 if (ioctl(video_fd
,VIDIOCGCAP
, &s
->video_cap
) < 0) {
102 perror("VIDIOCGCAP");
106 if (!(s
->video_cap
.type
& VID_TYPE_CAPTURE
)) {
107 av_log(s1
, AV_LOG_ERROR
, "Fatal: grab device does not handle capture\n");
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
;
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
;
127 tuner
.mode
= VIDEO_MODE_NTSC
;
128 ioctl(video_fd
, VIDIOCSTUNER
, &tuner
);
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
);
138 ret
= ioctl(video_fd
,VIDIOCGMBUF
,&s
->gb_buffers
);
140 /* try to use read based access */
141 struct video_window win
;
142 struct video_picture pict
;
152 ioctl(video_fd
, VIDIOCSWIN
, &win
);
154 ioctl(video_fd
, VIDIOCGPICT
, &pict
);
156 printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
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
);
169 pict
.palette
=VIDEO_PALETTE_YUV422
;
170 ret
= ioctl(video_fd
, VIDIOCSPICT
, &pict
);
172 pict
.palette
=VIDEO_PALETTE_RGB24
;
173 ret
= ioctl(video_fd
, VIDIOCSPICT
, &pict
);
180 s
->frame_format
= pict
.palette
;
183 ioctl(video_fd
, VIDIOCCAPTURE
, &val
);
185 s
->time_frame
= av_gettime() * s
->frame_rate
/ s
->frame_rate_base
;
188 /* ATI All In Wonder automatic activation */
189 if (!strcmp(s
->video_cap
.name
, "Km")) {
193 /* force 420P format because convertion from YUV422 to YUV420P
194 is done in this driver (ugly) */
195 s
->frame_format
= VIDEO_PALETTE_YUV420P
;
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
) {
204 s
->time_frame
= av_gettime() * s
->frame_rate
/ s
->frame_rate_base
;
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
;
212 if (desired_palette
== -1 || (ret
= ioctl(video_fd
, VIDIOCMCAPTURE
, &s
->gb_buf
)) < 0) {
213 s
->gb_buf
.format
= VIDEO_PALETTE_YUV420P
;
215 ret
= ioctl(video_fd
, VIDIOCMCAPTURE
, &s
->gb_buf
);
216 if (ret
< 0 && errno
!= EAGAIN
) {
218 s
->gb_buf
.format
= VIDEO_PALETTE_YUV422
;
220 ret
= ioctl(video_fd
, VIDIOCMCAPTURE
, &s
->gb_buf
);
221 if (ret
< 0 && errno
!= EAGAIN
) {
223 s
->gb_buf
.format
= VIDEO_PALETTE_RGB24
;
224 ret
= ioctl(video_fd
, VIDIOCMCAPTURE
, &s
->gb_buf
);
229 if (errno
!= EAGAIN
) {
231 av_log(s1
, AV_LOG_ERROR
, "Fatal: grab device does not support suitable format\n");
233 av_log(s1
, AV_LOG_ERROR
,"Fatal: grab device does not receive any video signal\n");
237 for (j
= 1; j
< s
->gb_buffers
.frames
; j
++) {
239 ioctl(video_fd
, VIDIOCMCAPTURE
, &s
->gb_buf
);
241 s
->frame_format
= s
->gb_buf
.format
;
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
;
250 case VIDEO_PALETTE_YUV422
:
251 frame_size
= width
* height
* 2;
252 st
->codec
->pix_fmt
= PIX_FMT_YUV422
;
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 ! */
262 s
->frame_size
= frame_size
;
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;
280 static int v4l_mm_read_picture(VideoData
*s
, uint8_t *buf
)
284 while (ioctl(s
->fd
, VIDIOCSYNC
, &s
->gb_frame
) < 0 &&
285 (errno
== EAGAIN
|| errno
== EINTR
));
287 ptr
= s
->video_buf
+ s
->gb_buffers
.offsets
[s
->gb_frame
];
288 memcpy(buf
, ptr
, s
->frame_size
);
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) {
294 av_log(NULL
, AV_LOG_ERROR
, "Cannot Sync\n");
296 perror("VIDIOCMCAPTURE");
300 /* This is now the grabbing frame */
301 s
->gb_frame
= (s
->gb_frame
+ 1) % s
->gb_buffers
.frames
;
303 return s
->frame_size
;
306 static int grab_read_packet(AVFormatContext
*s1
, AVPacket
*pkt
)
308 VideoData
*s
= s1
->priv_data
;
309 int64_t curtime
, delay
;
312 /* Calculate the time of the next frame */
313 s
->time_frame
+= int64_t_C(1000000);
315 /* wait based on the frame rate */
317 curtime
= av_gettime();
318 delay
= s
->time_frame
* s
->frame_rate_base
/ s
->frame_rate
- curtime
;
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);
326 ts
.tv_sec
= delay
/ 1000000;
327 ts
.tv_nsec
= (delay
% 1000000) * 1000;
328 nanosleep(&ts
, NULL
);
331 if (av_new_packet(pkt
, s
->frame_size
) < 0)
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
);
342 if (read(s
->fd
, pkt
->data
, pkt
->size
) != pkt
->size
)
344 return s
->frame_size
;
348 static int grab_read_close(AVFormatContext
*s1
)
350 VideoData
*s
= s1
->priv_data
;
356 munmap(s
->video_buf
, s
->gb_buffers
.size
);
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
);
367 static AVInputFormat video_grab_device_format
= {
375 .flags
= AVFMT_NOFILE
,
378 /* All in Wonder specific stuff */
379 /* XXX: remove and merge in libavcodec/imgconvert.c */
381 static int aiw_init(VideoData
*s
)
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
)) {
394 if (height
== s
->video_cap
.maxheight
*2) s
->deint
=1;
395 if (width
== s
->video_cap
.maxwidth
/2) s
->halfw
=1;
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
);
406 s
->src_mem
= av_malloc(s
->width
*2);
408 s
->src_mem
= av_malloc(s
->width
*4);
410 if (!s
->src_mem
) goto fail
;
412 s
->lum_m4_mem
= av_malloc(s
->width
);
417 av_freep(&s
->src_mem
);
418 av_freep(&s
->lum_m4_mem
);
423 #include "libavcodec/i386/mmx.h"
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); \
432 punpcklbw_r2r(mm4,mm0); \
433 punpckhbw_r2r(mm4,mm5); \
435 punpcklbw_r2r(mm5,mm1); \
436 movq_r2m(mm1,lum[0]); \
437 movq_m2r(ptr[16],mm2); \
438 movq_m2r(ptr[24],mm1); \
440 punpcklbw_r2r(mm1,mm2); \
441 punpckhbw_r2r(mm1,mm4); \
443 punpcklbw_r2r(mm4,mm2); \
444 punpckhbw_r2r(mm4,mm3); \
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]); \
454 movq_m2r(ptr[0],mm0);\
455 movq_m2r(ptr[8],mm1);\
457 punpcklbw_r2r(mm1,mm0); \
458 punpckhbw_r2r(mm1,mm4);\
460 punpcklbw_r2r(mm4,mm0);\
461 punpckhbw_r2r(mm4,mm5);\
463 punpcklbw_r2r(mm5,mm1);\
464 movq_r2m(mm1,lum[0]);\
465 movq_m2r(ptr[16],mm2);\
466 movq_m2r(ptr[24],mm1);\
468 punpcklbw_r2r(mm1,mm2);\
469 punpckhbw_r2r(mm1,mm4);\
471 punpcklbw_r2r(mm4,mm2);\
472 punpckhbw_r2r(mm4,mm3);\
474 punpcklbw_r2r(mm3,mm1);\
475 movq_r2m(mm1,lum[8]);
477 #define LINE_WITHUV_AVG \
478 movq_m2r(ptr[0], mm0);\
479 movq_m2r(ptr[8], mm1);\
481 punpcklbw_r2r(mm1,mm0);\
482 punpckhbw_r2r(mm1,mm4);\
484 punpcklbw_r2r(mm4,mm0);\
485 punpckhbw_r2r(mm4,mm5);\
488 punpcklbw_r2r(mm7,mm1);\
489 punpcklbw_r2r(mm7,mm2);\
493 packuswb_r2r(mm7,mm1);\
494 movd_r2m(mm1,lum[0]);\
495 movq_m2r(ptr[16],mm2);\
496 movq_m2r(ptr[24],mm1);\
498 punpcklbw_r2r(mm1,mm2);\
499 punpckhbw_r2r(mm1,mm4);\
501 punpcklbw_r2r(mm4,mm2);\
502 punpckhbw_r2r(mm4,mm3);\
505 punpcklbw_r2r(mm7,mm1);\
506 punpcklbw_r2r(mm7,mm4);\
510 packuswb_r2r(mm7,mm1);\
511 movd_r2m(mm1,lum[4]);\
512 punpckhbw_r2r(mm7,mm0);\
513 punpckhbw_r2r(mm7,mm2);\
517 packuswb_r2r(mm7,mm0);\
518 punpckhbw_r2r(mm7,mm5);\
519 punpckhbw_r2r(mm7,mm3);\
523 packuswb_r2r(mm7,mm5);\
524 movd_r2m(mm0,cb[0]);\
527 #define LINE_NOUV_AVG \
528 movq_m2r(ptr[0],mm0);\
529 movq_m2r(ptr[8],mm1);\
532 pmaddwd_r2r(mm6,mm0);\
533 pmaddwd_r2r(mm6,mm1);\
534 packssdw_r2r(mm1,mm0);\
537 movq_m2r(ptr[16],mm2);\
538 movq_m2r(ptr[24],mm3);\
541 pmaddwd_r2r(mm6,mm2);\
542 pmaddwd_r2r(mm6,mm3);\
543 packssdw_r2r(mm3,mm2);\
546 packuswb_r2r(mm2,mm0);\
547 movq_r2m(mm0,lum[0]);
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);\
568 psubusw_r2r(mm0,mm1);\
570 packuswb_r2r(mm7,mm1);\
571 movd_r2m(mm1,lum_m2[(ptroff)]);
574 #include "libavcodec/dsputil.h"
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];
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];
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;
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;
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];
641 /* Read two fields separately. */
642 static int aiw_read_picture(VideoData
*s
, uint8_t *data
)
644 uint8_t *ptr
, *lum
, *cb
, *cr
;
649 uint8_t* src
= s
->src_mem
;
650 uint8_t *ptrend
= &src
[s
->width
*2];
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) {
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) {
662 read(s
->fd
,src
,s
->width
*2);
663 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=16) {
666 read(s
->fd
,src
,s
->width
*2);
671 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=16, cb
+=8, cr
+=8) {
674 read(s
->fd
,src
,s
->width
*2);
675 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=16) {
678 /* drop second field */
679 while (read(s
->fd
,src
,s
->width
*2) < 0) {
682 for (h
= 0; h
< s
->height
- 1; h
++) {
683 read(s
->fd
,src
,s
->width
*2);
685 } else if (s
->halfw
== 1) {
702 movq_m2r(rounder
,mm6
);
704 while (read(s
->fd
,src
,s
->width
*4) < 0) {
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) {
712 read(s
->fd
,src
,s
->width
*4);
714 movq_m2r(masker
,mm5
);
716 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=8) {
719 read(s
->fd
,src
,s
->width
*4);
724 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=8, cb
+=4, cr
+=4) {
727 read(s
->fd
,src
,s
->width
*4);
729 movq_m2r(masker
,mm5
);
731 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=8) {
734 /* drop second field */
735 while (read(s
->fd
,src
,s
->width
*4) < 0) {
738 for (h
= 0; h
< s
->height
- 1; h
++) {
739 read(s
->fd
,src
,s
->width
*4);
742 uint8_t *lum_m1
, *lum_m2
, *lum_m3
, *lum_m4
;
749 movq_m2r(rounder
,mm6
);
752 uint8_t *cm
= cropTbl
+ MAX_NEG_CROP
;
755 /* read two fields and deinterlace them */
756 while (read(s
->fd
,src
,s
->width
*2) < 0) {
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) {
763 read(s
->fd
,src
,s
->width
*2);
764 /* skip a luminance line - will be filled in later */
766 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=16, cb
+=8, cr
+=8) {
769 /* skip a luminance line - will be filled in later */
771 read(s
->fd
,src
,s
->width
*2);
776 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=16, cb
+=8, cr
+=8) {
779 /* skip a luminance line - will be filled in later */
781 read(s
->fd
,src
,s
->width
*2);
782 for (ptr
= &src
[0]; ptr
< ptrend
; ptr
+=32, lum
+=16, cb
+=8, cr
+=8) {
791 while (read(s
->fd
,src
,s
->width
*2) < 0) {
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) {
799 read(s
->fd
,src
,s
->width
*2);
800 /* skip a luminance line */
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) {
817 read(s
->fd
,src
,s
->width
*2);
818 /* skip a luminance line */
823 // lum_m4 += s->width;
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) {
841 return s
->frame_size
;
844 static int aiw_close(VideoData
*s
)
846 av_freep(&s
->lum_m4_mem
);
847 av_freep(&s
->src_mem
);
851 int video_grab_init(void)
853 av_register_input_format(&video_grab_device_format
);