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., 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
  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, 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
 281 static 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
 307 static 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
 349 static 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
 368 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
 382 static 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. */
 643 static 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
 845 static int aiw_close(VideoData *s)
 846 {
 847     av_freep(&s->lum_m4_mem);
 848     av_freep(&s->src_mem);
 849     return 0;
 850 }