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