3db37482fdb2a576073033395ff50e14a2876b63
[ffmpeg.git] / libavformat / grab.c
1 /*
2  * Linux video grab interface
3  * Copyright (c) 2000,2001 Fabrice Bellard.
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 #include "avformat.h"
22 #include "dsputil.h"
23 #include <unistd.h>
24 #include <fcntl.h>
25 #include <sys/ioctl.h>
26 #include <sys/mman.h>
27 #include <sys/time.h>
28 #define _LINUX_TIME_H 1
29 #include <linux/videodev.h>
30 #include <time.h>
31
32 typedef struct {
33     int fd;
34     int frame_format; /* see VIDEO_PALETTE_xxx */
35     int use_mmap;
36     int width, height;
37     int frame_rate;
38     int frame_rate_base;
39     int64_t time_frame;
40     int frame_size;
41     struct video_capability video_cap;
42     struct video_audio audio_saved;
43     uint8_t *video_buf;
44     struct video_mbuf gb_buffers;
45     struct video_mmap gb_buf;
46     int gb_frame;
47
48     /* ATI All In Wonder specific stuff */
49     /* XXX: remove and merge in libavcodec/imgconvert.c */
50     int aiw_enabled;
51     int deint;
52     int halfw;
53     uint8_t *src_mem;
54     uint8_t *lum_m4_mem;
55 } VideoData;
56
57 struct {
58     int palette;
59     int depth;
60     enum PixelFormat pix_fmt;
61 } video_formats [] = {
62     {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = PIX_FMT_YUV420P },
63     {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
64     {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = PIX_FMT_UYVY422 },
65     {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
66     /* NOTE: v4l uses BGR24, not RGB24 */
67     {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = PIX_FMT_BGR24   },
68     {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = PIX_FMT_BGR565  },
69     {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = PIX_FMT_GRAY8   },
70 };
71
72
73 static int aiw_init(VideoData *s);
74 static int aiw_read_picture(VideoData *s, uint8_t *data);
75 static int aiw_close(VideoData *s);
76
77 static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
78 {
79     VideoData *s = s1->priv_data;
80     AVStream *st;
81     int width, height;
82     int video_fd, frame_size;
83     int ret, frame_rate, frame_rate_base;
84     int desired_palette, desired_depth;
85     struct video_tuner tuner;
86     struct video_audio audio;
87     struct video_picture pict;
88     int j;
89     int vformat_num = sizeof(video_formats) / sizeof(video_formats[0]);
90
91     if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
92         av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
93             ap->width, ap->height, ap->time_base.den);
94
95         return -1;
96     }
97
98     width = ap->width;
99     height = ap->height;
100     frame_rate      = ap->time_base.den;
101     frame_rate_base = ap->time_base.num;
102
103     if((unsigned)width > 32767 || (unsigned)height > 32767) {
104         av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
105             width, height);
106
107         return -1;
108     }
109
110     st = av_new_stream(s1, 0);
111     if (!st)
112         return AVERROR(ENOMEM);
113     av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
114
115     s->width = width;
116     s->height = height;
117     s->frame_rate      = frame_rate;
118     s->frame_rate_base = frame_rate_base;
119
120     video_fd = open(s1->filename, O_RDWR);
121     if (video_fd < 0) {
122         perror(s1->filename);
123         goto fail;
124     }
125
126     if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
127         perror("VIDIOCGCAP");
128         goto fail;
129     }
130
131     if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
132         av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
133         goto fail;
134     }
135
136     desired_palette = -1;
137     desired_depth = -1;
138     for (j = 0; j < vformat_num; j++) {
139         if (ap->pix_fmt == video_formats[j].pix_fmt) {
140             desired_palette = video_formats[j].palette;
141             desired_depth = video_formats[j].depth;
142             break;
143         }
144     }
145
146     /* set tv standard */
147     if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
148         if (!strcasecmp(ap->standard, "pal"))
149             tuner.mode = VIDEO_MODE_PAL;
150         else if (!strcasecmp(ap->standard, "secam"))
151             tuner.mode = VIDEO_MODE_SECAM;
152         else
153             tuner.mode = VIDEO_MODE_NTSC;
154         ioctl(video_fd, VIDIOCSTUNER, &tuner);
155     }
156
157     /* unmute audio */
158     audio.audio = 0;
159     ioctl(video_fd, VIDIOCGAUDIO, &audio);
160     memcpy(&s->audio_saved, &audio, sizeof(audio));
161     audio.flags &= ~VIDEO_AUDIO_MUTE;
162     ioctl(video_fd, VIDIOCSAUDIO, &audio);
163
164     ioctl(video_fd, VIDIOCGPICT, &pict);
165 #if 0
166     printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
167            pict.colour,
168            pict.hue,
169            pict.brightness,
170            pict.contrast,
171            pict.whiteness);
172 #endif
173     /* try to choose a suitable video format */
174     pict.palette = desired_palette;
175     pict.depth= desired_depth;
176     if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
177         for (j = 0; j < vformat_num; j++) {
178             pict.palette = video_formats[j].palette;
179             pict.depth = video_formats[j].depth;
180             if (-1 != ioctl(video_fd, VIDIOCSPICT, &pict))
181                 break;
182         }
183         if (j >= vformat_num)
184             goto fail1;
185     }
186
187     ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
188     if (ret < 0) {
189         /* try to use read based access */
190         struct video_window win;
191         int val;
192
193         win.x = 0;
194         win.y = 0;
195         win.width = width;
196         win.height = height;
197         win.chromakey = -1;
198         win.flags = 0;
199
200         ioctl(video_fd, VIDIOCSWIN, &win);
201
202         s->frame_format = pict.palette;
203
204         val = 1;
205         ioctl(video_fd, VIDIOCCAPTURE, &val);
206
207         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
208         s->use_mmap = 0;
209
210         /* ATI All In Wonder automatic activation */
211         if (!strcmp(s->video_cap.name, "Km")) {
212             if (aiw_init(s) < 0)
213                 goto fail;
214             s->aiw_enabled = 1;
215             /* force 420P format because convertion from YUV422 to YUV420P
216                is done in this driver (ugly) */
217             s->frame_format = VIDEO_PALETTE_YUV420P;
218         }
219     } else {
220         s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
221         if ((unsigned char*)-1 == s->video_buf) {
222             s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_PRIVATE,video_fd,0);
223             if ((unsigned char*)-1 == s->video_buf) {
224                 perror("mmap");
225                 goto fail;
226             }
227         }
228         s->gb_frame = 0;
229         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
230
231         /* start to grab the first frame */
232         s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
233         s->gb_buf.height = height;
234         s->gb_buf.width = width;
235         s->gb_buf.format = pict.palette;
236
237         ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
238         if (ret < 0) {
239             if (errno != EAGAIN) {
240             fail1:
241                 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
242             } else {
243                 av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
244             }
245             goto fail;
246         }
247         for (j = 1; j < s->gb_buffers.frames; j++) {
248           s->gb_buf.frame = j;
249           ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
250         }
251         s->frame_format = s->gb_buf.format;
252         s->use_mmap = 1;
253     }
254
255     for (j = 0; j < vformat_num; j++) {
256         if (s->frame_format == video_formats[j].palette) {
257             frame_size = width * height * video_formats[j].depth / 8;
258             st->codec->pix_fmt = video_formats[j].pix_fmt;
259             break;
260         }
261     }
262
263     if (j >= vformat_num)
264         goto fail;
265
266     s->fd = video_fd;
267     s->frame_size = frame_size;
268
269     st->codec->codec_type = CODEC_TYPE_VIDEO;
270     st->codec->codec_id = CODEC_ID_RAWVIDEO;
271     st->codec->width = width;
272     st->codec->height = height;
273     st->codec->time_base.den      = frame_rate;
274     st->codec->time_base.num = frame_rate_base;
275     st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
276
277     return 0;
278  fail:
279     if (video_fd >= 0)
280         close(video_fd);
281     av_free(st);
282     return AVERROR_IO;
283 }
284
285 static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
286 {
287     uint8_t *ptr;
288
289     while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
290            (errno == EAGAIN || errno == EINTR));
291
292     ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
293     memcpy(buf, ptr, s->frame_size);
294
295     /* Setup to capture the next frame */
296     s->gb_buf.frame = s->gb_frame;
297     if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
298         if (errno == EAGAIN)
299             av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
300         else
301             perror("VIDIOCMCAPTURE");
302         return AVERROR_IO;
303     }
304
305     /* This is now the grabbing frame */
306     s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
307
308     return s->frame_size;
309 }
310
311 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
312 {
313     VideoData *s = s1->priv_data;
314     int64_t curtime, delay;
315     struct timespec ts;
316
317     /* Calculate the time of the next frame */
318     s->time_frame += INT64_C(1000000);
319
320     /* wait based on the frame rate */
321     for(;;) {
322         curtime = av_gettime();
323         delay = s->time_frame  * s->frame_rate_base / s->frame_rate - curtime;
324         if (delay <= 0) {
325             if (delay < INT64_C(-1000000) * s->frame_rate_base / s->frame_rate) {
326                 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
327                 s->time_frame += INT64_C(1000000);
328             }
329             break;
330         }
331         ts.tv_sec = delay / 1000000;
332         ts.tv_nsec = (delay % 1000000) * 1000;
333         nanosleep(&ts, NULL);
334     }
335
336     if (av_new_packet(pkt, s->frame_size) < 0)
337         return AVERROR_IO;
338
339     pkt->pts = curtime;
340
341     /* read one frame */
342     if (s->aiw_enabled) {
343         return aiw_read_picture(s, pkt->data);
344     } else if (s->use_mmap) {
345         return v4l_mm_read_picture(s, pkt->data);
346     } else {
347         if (read(s->fd, pkt->data, pkt->size) != pkt->size)
348             return AVERROR_IO;
349         return s->frame_size;
350     }
351 }
352
353 static int grab_read_close(AVFormatContext *s1)
354 {
355     VideoData *s = s1->priv_data;
356
357     if (s->aiw_enabled)
358         aiw_close(s);
359
360     if (s->use_mmap)
361         munmap(s->video_buf, s->gb_buffers.size);
362
363     /* mute audio. we must force it because the BTTV driver does not
364        return its state correctly */
365     s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
366     ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
367
368     close(s->fd);
369     return 0;
370 }
371
372 AVInputFormat video_grab_v4l_demuxer = {
373     "video4linux",
374     "video grab",
375     sizeof(VideoData),
376     NULL,
377     grab_read_header,
378     grab_read_packet,
379     grab_read_close,
380     .flags = AVFMT_NOFILE,
381 };
382
383 /* All in Wonder specific stuff */
384 /* XXX: remove and merge in libavcodec/imgconvert.c */
385
386 static int aiw_init(VideoData *s)
387 {
388     int width, height;
389
390     width = s->width;
391     height = s->height;
392
393     if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
394         (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
395         (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
396
397         s->deint=0;
398         s->halfw=0;
399         if (height == s->video_cap.maxheight*2) s->deint=1;
400         if (width == s->video_cap.maxwidth/2) s->halfw=1;
401     } else {
402         av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
403         av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",
404                 s->video_cap.maxwidth,s->video_cap.maxheight,
405                 s->video_cap.maxwidth,s->video_cap.maxheight*2,
406                 s->video_cap.maxwidth/2,s->video_cap.maxheight);
407         goto fail;
408     }
409
410     if (s->halfw == 0) {
411         s->src_mem = av_malloc(s->width*2);
412     } else {
413         s->src_mem = av_malloc(s->width*4);
414     }
415     if (!s->src_mem) goto fail;
416
417     s->lum_m4_mem = av_malloc(s->width);
418     if (!s->lum_m4_mem)
419         goto fail;
420     return 0;
421  fail:
422     av_freep(&s->src_mem);
423     av_freep(&s->lum_m4_mem);
424     return -1;
425 }
426
427 #ifdef HAVE_MMX
428 #include "i386/mmx.h"
429
430 #define LINE_WITH_UV \
431                     movq_m2r(ptr[0],mm0); \
432                     movq_m2r(ptr[8],mm1);  \
433                     movq_r2r(mm0, mm4); \
434                     punpcklbw_r2r(mm1,mm0); \
435                     punpckhbw_r2r(mm1,mm4); \
436                     movq_r2r(mm0,mm5); \
437                     punpcklbw_r2r(mm4,mm0); \
438                     punpckhbw_r2r(mm4,mm5); \
439                     movq_r2r(mm0,mm1); \
440                     punpcklbw_r2r(mm5,mm1); \
441                     movq_r2m(mm1,lum[0]); \
442                     movq_m2r(ptr[16],mm2); \
443                     movq_m2r(ptr[24],mm1); \
444                     movq_r2r(mm2,mm4); \
445                     punpcklbw_r2r(mm1,mm2); \
446                     punpckhbw_r2r(mm1,mm4); \
447                     movq_r2r(mm2,mm3); \
448                     punpcklbw_r2r(mm4,mm2); \
449                     punpckhbw_r2r(mm4,mm3); \
450                     movq_r2r(mm2,mm1); \
451                     punpcklbw_r2r(mm3,mm1); \
452                     movq_r2m(mm1,lum[8]); \
453                     punpckhdq_r2r(mm2,mm0); \
454                     punpckhdq_r2r(mm3,mm5); \
455                     movq_r2m(mm0,cb[0]); \
456                     movq_r2m(mm5,cr[0]);
457
458 #define LINE_NO_UV \
459                     movq_m2r(ptr[0],mm0);\
460                     movq_m2r(ptr[8],mm1);\
461                     movq_r2r(mm0, mm4);\
462                     punpcklbw_r2r(mm1,mm0); \
463                     punpckhbw_r2r(mm1,mm4);\
464                     movq_r2r(mm0,mm5);\
465                     punpcklbw_r2r(mm4,mm0);\
466                     punpckhbw_r2r(mm4,mm5);\
467                     movq_r2r(mm0,mm1);\
468                     punpcklbw_r2r(mm5,mm1);\
469                     movq_r2m(mm1,lum[0]);\
470                     movq_m2r(ptr[16],mm2);\
471                     movq_m2r(ptr[24],mm1);\
472                     movq_r2r(mm2,mm4);\
473                     punpcklbw_r2r(mm1,mm2);\
474                     punpckhbw_r2r(mm1,mm4);\
475                     movq_r2r(mm2,mm3);\
476                     punpcklbw_r2r(mm4,mm2);\
477                     punpckhbw_r2r(mm4,mm3);\
478                     movq_r2r(mm2,mm1);\
479                     punpcklbw_r2r(mm3,mm1);\
480                     movq_r2m(mm1,lum[8]);
481
482 #define LINE_WITHUV_AVG \
483                     movq_m2r(ptr[0], mm0);\
484                     movq_m2r(ptr[8], mm1);\
485                     movq_r2r(mm0, mm4);\
486                     punpcklbw_r2r(mm1,mm0);\
487                     punpckhbw_r2r(mm1,mm4);\
488                     movq_r2r(mm0,mm5);\
489                     punpcklbw_r2r(mm4,mm0);\
490                     punpckhbw_r2r(mm4,mm5);\
491                     movq_r2r(mm0,mm1);\
492                     movq_r2r(mm5,mm2);\
493                     punpcklbw_r2r(mm7,mm1);\
494                     punpcklbw_r2r(mm7,mm2);\
495                     paddw_r2r(mm6,mm1);\
496                     paddw_r2r(mm2,mm1);\
497                     psraw_i2r(1,mm1);\
498                     packuswb_r2r(mm7,mm1);\
499                     movd_r2m(mm1,lum[0]);\
500                     movq_m2r(ptr[16],mm2);\
501                     movq_m2r(ptr[24],mm1);\
502                     movq_r2r(mm2,mm4);\
503                     punpcklbw_r2r(mm1,mm2);\
504                     punpckhbw_r2r(mm1,mm4);\
505                     movq_r2r(mm2,mm3);\
506                     punpcklbw_r2r(mm4,mm2);\
507                     punpckhbw_r2r(mm4,mm3);\
508                     movq_r2r(mm2,mm1);\
509                     movq_r2r(mm3,mm4);\
510                     punpcklbw_r2r(mm7,mm1);\
511                     punpcklbw_r2r(mm7,mm4);\
512                     paddw_r2r(mm6,mm1);\
513                     paddw_r2r(mm4,mm1);\
514                     psraw_i2r(1,mm1);\
515                     packuswb_r2r(mm7,mm1);\
516                     movd_r2m(mm1,lum[4]);\
517                     punpckhbw_r2r(mm7,mm0);\
518                     punpckhbw_r2r(mm7,mm2);\
519                     paddw_r2r(mm6,mm0);\
520                     paddw_r2r(mm2,mm0);\
521                     psraw_i2r(1,mm0);\
522                     packuswb_r2r(mm7,mm0);\
523                     punpckhbw_r2r(mm7,mm5);\
524                     punpckhbw_r2r(mm7,mm3);\
525                     paddw_r2r(mm6,mm5);\
526                     paddw_r2r(mm3,mm5);\
527                     psraw_i2r(1,mm5);\
528                     packuswb_r2r(mm7,mm5);\
529                     movd_r2m(mm0,cb[0]);\
530                     movd_r2m(mm5,cr[0]);
531
532 #define LINE_NOUV_AVG \
533                     movq_m2r(ptr[0],mm0);\
534                     movq_m2r(ptr[8],mm1);\
535                     pand_r2r(mm5,mm0);\
536                     pand_r2r(mm5,mm1);\
537                     pmaddwd_r2r(mm6,mm0);\
538                     pmaddwd_r2r(mm6,mm1);\
539                     packssdw_r2r(mm1,mm0);\
540                     paddw_r2r(mm6,mm0);\
541                     psraw_i2r(1,mm0);\
542                     movq_m2r(ptr[16],mm2);\
543                     movq_m2r(ptr[24],mm3);\
544                     pand_r2r(mm5,mm2);\
545                     pand_r2r(mm5,mm3);\
546                     pmaddwd_r2r(mm6,mm2);\
547                     pmaddwd_r2r(mm6,mm3);\
548                     packssdw_r2r(mm3,mm2);\
549                     paddw_r2r(mm6,mm2);\
550                     psraw_i2r(1,mm2);\
551                     packuswb_r2r(mm2,mm0);\
552                     movq_r2m(mm0,lum[0]);
553
554 #define DEINT_LINE_LUM(ptroff) \
555                     movd_m2r(lum_m4[(ptroff)],mm0);\
556                     movd_m2r(lum_m3[(ptroff)],mm1);\
557                     movd_m2r(lum_m2[(ptroff)],mm2);\
558                     movd_m2r(lum_m1[(ptroff)],mm3);\
559                     movd_m2r(lum[(ptroff)],mm4);\
560                     punpcklbw_r2r(mm7,mm0);\
561                     movd_r2m(mm2,lum_m4[(ptroff)]);\
562                     punpcklbw_r2r(mm7,mm1);\
563                     punpcklbw_r2r(mm7,mm2);\
564                     punpcklbw_r2r(mm7,mm3);\
565                     punpcklbw_r2r(mm7,mm4);\
566                     psllw_i2r(2,mm1);\
567                     psllw_i2r(1,mm2);\
568                     paddw_r2r(mm6,mm1);\
569                     psllw_i2r(2,mm3);\
570                     paddw_r2r(mm2,mm1);\
571                     paddw_r2r(mm4,mm0);\
572                     paddw_r2r(mm3,mm1);\
573                     psubusw_r2r(mm0,mm1);\
574                     psrlw_i2r(3,mm1);\
575                     packuswb_r2r(mm7,mm1);\
576                     movd_r2m(mm1,lum_m2[(ptroff)]);
577
578 #else
579 #include "dsputil.h"
580
581 #define LINE_WITH_UV \
582                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
583                     cb[0]=ptr[1];cb[1]=ptr[5];\
584                     cr[0]=ptr[3];cr[1]=ptr[7];\
585                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
586                     cb[2]=ptr[9];cb[3]=ptr[13];\
587                     cr[2]=ptr[11];cr[3]=ptr[15];\
588                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
589                     cb[4]=ptr[17];cb[5]=ptr[21];\
590                     cr[4]=ptr[19];cr[5]=ptr[23];\
591                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
592                     cb[6]=ptr[25];cb[7]=ptr[29];\
593                     cr[6]=ptr[27];cr[7]=ptr[31];
594
595 #define LINE_NO_UV \
596                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
597                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
598                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
599                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
600
601 #define LINE_WITHUV_AVG \
602                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
603                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
604                     sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
605                     sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
606                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
607                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
608                     sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
609                     sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
610                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
611                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
612                     sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
613                     sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
614                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
615                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
616                     sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
617                     sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
618
619 #define LINE_NOUV_AVG \
620                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
621                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
622                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
623                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
624                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
625                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
626                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
627                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
628
629 #define DEINT_LINE_LUM(ptroff) \
630                     sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
631                     lum_m4[(ptroff)]=lum_m2[(ptroff)];\
632                     lum_m2[(ptroff)]=cm[(sum+4)>>3];\
633                     sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
634                     lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
635                     lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
636                     sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
637                     lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
638                     lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
639                     sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
640                     lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
641                     lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
642
643 #endif
644
645
646 /* Read two fields separately. */
647 static int aiw_read_picture(VideoData *s, uint8_t *data)
648 {
649     uint8_t *ptr, *lum, *cb, *cr;
650     int h;
651 #ifndef HAVE_MMX
652     int sum;
653 #endif
654     uint8_t* src = s->src_mem;
655     uint8_t *ptrend = &src[s->width*2];
656     lum=data;
657     cb=&lum[s->width*s->height];
658     cr=&cb[(s->width*s->height)/4];
659     if (s->deint == 0 && s->halfw == 0) {
660         while (read(s->fd,src,s->width*2) < 0) {
661             usleep(100);
662         }
663         for (h = 0; h < s->height-2; h+=2) {
664             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
665                 LINE_WITH_UV
666                     }
667             read(s->fd,src,s->width*2);
668             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
669                 LINE_NO_UV
670                     }
671             read(s->fd,src,s->width*2);
672         }
673         /*
674          * Do last two lines
675          */
676         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
677             LINE_WITH_UV
678                 }
679         read(s->fd,src,s->width*2);
680         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
681             LINE_NO_UV
682                 }
683         /* drop second field */
684         while (read(s->fd,src,s->width*2) < 0) {
685             usleep(100);
686         }
687         for (h = 0; h < s->height - 1; h++) {
688             read(s->fd,src,s->width*2);
689         }
690     } else if (s->halfw == 1) {
691 #ifdef HAVE_MMX
692         mmx_t rounder;
693         mmx_t masker;
694         rounder.uw[0]=1;
695         rounder.uw[1]=1;
696         rounder.uw[2]=1;
697         rounder.uw[3]=1;
698         masker.ub[0]=0xff;
699         masker.ub[1]=0;
700         masker.ub[2]=0xff;
701         masker.ub[3]=0;
702         masker.ub[4]=0xff;
703         masker.ub[5]=0;
704         masker.ub[6]=0xff;
705         masker.ub[7]=0;
706         pxor_r2r(mm7,mm7);
707         movq_m2r(rounder,mm6);
708 #endif
709         while (read(s->fd,src,s->width*4) < 0) {
710             usleep(100);
711         }
712         ptrend = &src[s->width*4];
713         for (h = 0; h < s->height-2; h+=2) {
714             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
715                 LINE_WITHUV_AVG
716                     }
717             read(s->fd,src,s->width*4);
718 #ifdef HAVE_MMX
719             movq_m2r(masker,mm5);
720 #endif
721             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
722                 LINE_NOUV_AVG
723                     }
724             read(s->fd,src,s->width*4);
725         }
726         /*
727  * Do last two lines
728  */
729         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
730             LINE_WITHUV_AVG
731                 }
732         read(s->fd,src,s->width*4);
733 #ifdef HAVE_MMX
734         movq_m2r(masker,mm5);
735 #endif
736         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
737             LINE_NOUV_AVG
738                 }
739         /* drop second field */
740         while (read(s->fd,src,s->width*4) < 0) {
741             usleep(100);
742         }
743         for (h = 0; h < s->height - 1; h++) {
744             read(s->fd,src,s->width*4);
745         }
746     } else {
747         uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
748 #ifdef HAVE_MMX
749         mmx_t rounder;
750         rounder.uw[0]=4;
751         rounder.uw[1]=4;
752         rounder.uw[2]=4;
753         rounder.uw[3]=4;
754         movq_m2r(rounder,mm6);
755         pxor_r2r(mm7,mm7);
756 #else
757         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
758 #endif
759
760         /* read two fields and deinterlace them */
761         while (read(s->fd,src,s->width*2) < 0) {
762             usleep(100);
763         }
764         for (h = 0; h < (s->height/2)-2; h+=2) {
765             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
766                 LINE_WITH_UV
767                     }
768             read(s->fd,src,s->width*2);
769             /* skip a luminance line - will be filled in later */
770             lum += s->width;
771             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
772                 LINE_WITH_UV
773                     }
774             /* skip a luminance line - will be filled in later */
775             lum += s->width;
776             read(s->fd,src,s->width*2);
777         }
778         /*
779  * Do last two lines
780  */
781         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
782             LINE_WITH_UV
783                 }
784         /* skip a luminance line - will be filled in later */
785         lum += s->width;
786         read(s->fd,src,s->width*2);
787         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
788             LINE_WITH_UV
789                 }
790         /*
791  *
792  * SECOND FIELD
793  *
794  */
795         lum=&data[s->width];
796         while (read(s->fd,src,s->width*2) < 0) {
797             usleep(10);
798         }
799         /* First (and last) two lines not interlaced */
800         for (h = 0; h < 2; h++) {
801             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
802                 LINE_NO_UV
803                     }
804             read(s->fd,src,s->width*2);
805             /* skip a luminance line */
806             lum += s->width;
807         }
808         lum_m1=&lum[-s->width];
809         lum_m2=&lum_m1[-s->width];
810         lum_m3=&lum_m2[-s->width];
811         memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
812         for (; h < (s->height/2)-1; h++) {
813             lum_m4=s->lum_m4_mem;
814             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
815                 LINE_NO_UV
816
817                     DEINT_LINE_LUM(0)
818                     DEINT_LINE_LUM(4)
819                     DEINT_LINE_LUM(8)
820                     DEINT_LINE_LUM(12)
821                     }
822             read(s->fd,src,s->width*2);
823             /* skip a luminance line */
824             lum += s->width;
825             lum_m1 += s->width;
826             lum_m2 += s->width;
827             lum_m3 += s->width;
828             //                lum_m4 += s->width;
829         }
830         /*
831  * Do last line
832  */
833         lum_m4=s->lum_m4_mem;
834         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
835             LINE_NO_UV
836
837                 DEINT_LINE_LUM(0)
838                 DEINT_LINE_LUM(4)
839                 DEINT_LINE_LUM(8)
840                 DEINT_LINE_LUM(12)
841                 }
842     }
843     emms_c();
844     return s->frame_size;
845 }
846
847 static int aiw_close(VideoData *s)
848 {
849     av_freep(&s->lum_m4_mem);
850     av_freep(&s->src_mem);
851     return 0;
852 }