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