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FFmpeg/libavformat/grab.c

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  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.                     pict.palette=VIDEO_PALETTE_GREY;

  177.                     pict.depth=8;

  178.                     ret = ioctl(video_fd, VIDIOCSPICT, &pict);

  179.                     if (ret < 0)

  180.                         goto fail1;

  181.             }

  182.         }

  183.     }

  184. 

  185.     ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);

  186.     if (ret < 0) {

  187.         /* try to use read based access */

  188.         struct video_window win;

  189.         int val;

  190. 

  191.         win.x = 0;

  192.         win.y = 0;

  193.         win.width = width;

  194.         win.height = height;

  195.         win.chromakey = -1;

  196.         win.flags = 0;

  197. 

  198.         ioctl(video_fd, VIDIOCSWIN, &win);

  199. 

  200.         s->frame_format = pict.palette;

  201. 

  202.         val = 1;

  203.         ioctl(video_fd, VIDIOCCAPTURE, &val);

  204. 

  205.         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;

  206.         s->use_mmap = 0;

  207. 

  208.         /* ATI All In Wonder automatic activation */

  209.         if (!strcmp(s->video_cap.name, "Km")) {

  210.             if (aiw_init(s) < 0)

  211.                 goto fail;

  212.             s->aiw_enabled = 1;

  213.             /* force 420P format because convertion from YUV422 to YUV420P

  214.                is done in this driver (ugly) */

  215.             s->frame_format = VIDEO_PALETTE_YUV420P;

  216.         }

  217.     } else {

  218.         s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);

  219.         if ((unsigned char*)-1 == s->video_buf) {

  220.             perror("mmap");

  221.             goto fail;

  222.         }

  223.         s->gb_frame = 0;

  224.         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;

  225. 

  226.         /* start to grab the first frame */

  227.         s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;

  228.         s->gb_buf.height = height;

  229.         s->gb_buf.width = width;

  230.         s->gb_buf.format = pict.palette;

  231. 

  232.         ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);

  233.         if (ret < 0) {

  234.             if (errno != EAGAIN) {

  235.             fail1:

  236.                 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");

  237.             } else {

  238.                 av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");

  239.             }

  240.             goto fail;

  241.         }

  242.         for (j = 1; j < s->gb_buffers.frames; j++) {

  243.           s->gb_buf.frame = j;

  244.           ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);

  245.         }

  246.         s->frame_format = s->gb_buf.format;

  247.         s->use_mmap = 1;

  248.     }

  249. 

  250.     switch(s->frame_format) {

  251.     case VIDEO_PALETTE_YUV420P:

  252.         frame_size = (width * height * 3) / 2;

  253.         st->codec->pix_fmt = PIX_FMT_YUV420P;

  254.         break;

  255.     case VIDEO_PALETTE_YUV422:

  256.         frame_size = width * height * 2;

  257.         st->codec->pix_fmt = PIX_FMT_YUV422;

  258.         break;

  259.     case VIDEO_PALETTE_RGB24:

  260.         frame_size = width * height * 3;

  261.         st->codec->pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */

  262.         break;

  263.     case VIDEO_PALETTE_GREY:

  264.         frame_size = width * height * 1;

  265.         st->codec->pix_fmt = PIX_FMT_GRAY8;

  266.         break;

  267.     default:

  268.         goto fail;

  269.     }

  270.     s->fd = video_fd;

  271.     s->frame_size = frame_size;

  272. 

  273.     st->codec->codec_type = CODEC_TYPE_VIDEO;

  274.     st->codec->codec_id = CODEC_ID_RAWVIDEO;

  275.     st->codec->width = width;

  276.     st->codec->height = height;

  277.     st->codec->time_base.den      = frame_rate;

  278.     st->codec->time_base.num = frame_rate_base;

  279.     st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;

  280. 

  281.     return 0;

  282.  fail:

  283.     if (video_fd >= 0)

  284.         close(video_fd);

  285.     av_free(st);

  286.     return AVERROR_IO;

  287. }

  288. 

  289. static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)

  290. {

  291.     uint8_t *ptr;

  292. 

  293.     while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&

  294.            (errno == EAGAIN || errno == EINTR));

  295. 

  296.     ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];

  297.     memcpy(buf, ptr, s->frame_size);

  298. 

  299.     /* Setup to capture the next frame */

  300.     s->gb_buf.frame = s->gb_frame;

  301.     if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {

  302.         if (errno == EAGAIN)

  303.             av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");

  304.         else

  305.             perror("VIDIOCMCAPTURE");

  306.         return AVERROR_IO;

  307.     }

  308. 

  309.     /* This is now the grabbing frame */

  310.     s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;

  311. 

  312.     return s->frame_size;

  313. }

  314. 

  315. static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)

  316. {

  317.     VideoData *s = s1->priv_data;

  318.     int64_t curtime, delay;

  319.     struct timespec ts;

  320. 

  321.     /* Calculate the time of the next frame */

  322.     s->time_frame += int64_t_C(1000000);

  323. 

  324.     /* wait based on the frame rate */

  325.     for(;;) {

  326.         curtime = av_gettime();

  327.         delay = s->time_frame  * s->frame_rate_base / s->frame_rate - curtime;

  328.         if (delay <= 0) {

  329.             if (delay < int64_t_C(-1000000) * s->frame_rate_base / s->frame_rate) {

  330.                 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */

  331.                 s->time_frame += int64_t_C(1000000);

  332.             }

  333.             break;

  334.         }

  335.         ts.tv_sec = delay / 1000000;

  336.         ts.tv_nsec = (delay % 1000000) * 1000;

  337.         nanosleep(&ts, NULL);

  338.     }

  339. 

  340.     if (av_new_packet(pkt, s->frame_size) < 0)

  341.         return AVERROR_IO;

  342. 

  343.     pkt->pts = curtime;

  344. 

  345.     /* read one frame */

  346.     if (s->aiw_enabled) {

  347.         return aiw_read_picture(s, pkt->data);

  348.     } else if (s->use_mmap) {

  349.         return v4l_mm_read_picture(s, pkt->data);

  350.     } else {

  351.         if (read(s->fd, pkt->data, pkt->size) != pkt->size)

  352.             return AVERROR_IO;

  353.         return s->frame_size;

  354.     }

  355. }

  356. 

  357. static int grab_read_close(AVFormatContext *s1)

  358. {

  359.     VideoData *s = s1->priv_data;

  360. 

  361.     if (s->aiw_enabled)

  362.         aiw_close(s);

  363. 

  364.     if (s->use_mmap)

  365.         munmap(s->video_buf, s->gb_buffers.size);

  366. 

  367.     /* mute audio. we must force it because the BTTV driver does not

  368.        return its state correctly */

  369.     s->audio_saved.flags |= VIDEO_AUDIO_MUTE;

  370.     ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);

  371. 

  372.     close(s->fd);

  373.     return 0;

  374. }

  375. 

  376. AVInputFormat video_grab_device_demuxer = {

  377.     "video4linux",

  378.     "video grab",

  379.     sizeof(VideoData),

  380.     NULL,

  381.     grab_read_header,

  382.     grab_read_packet,

  383.     grab_read_close,

  384.     .flags = AVFMT_NOFILE,

  385. };

  386. 

  387. /* All in Wonder specific stuff */

  388. /* XXX: remove and merge in libavcodec/imgconvert.c */

  389. 

  390. static int aiw_init(VideoData *s)

  391. {

  392.     int width, height;

  393. 

  394.     width = s->width;

  395.     height = s->height;

  396. 

  397.     if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||

  398.         (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||

  399.         (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {

  400. 

  401.         s->deint=0;

  402.         s->halfw=0;

  403.         if (height == s->video_cap.maxheight*2) s->deint=1;

  404.         if (width == s->video_cap.maxwidth/2) s->halfw=1;

  405.     } else {

  406.         av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");

  407.         av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",

  408.                 s->video_cap.maxwidth,s->video_cap.maxheight,

  409.                 s->video_cap.maxwidth,s->video_cap.maxheight*2,

  410.                 s->video_cap.maxwidth/2,s->video_cap.maxheight);

  411.         goto fail;

  412.     }

  413. 

  414.     if (s->halfw == 0) {

  415.         s->src_mem = av_malloc(s->width*2);

  416.     } else {

  417.         s->src_mem = av_malloc(s->width*4);

  418.     }

  419.     if (!s->src_mem) goto fail;

  420. 

  421.     s->lum_m4_mem = av_malloc(s->width);

  422.     if (!s->lum_m4_mem)

  423.         goto fail;

  424.     return 0;

  425.  fail:

  426.     av_freep(&s->src_mem);

  427.     av_freep(&s->lum_m4_mem);

  428.     return -1;

  429. }

  430. 

  431. #ifdef HAVE_MMX

  432. #include "libavcodec/i386/mmx.h"

  433. 

  434. #define LINE_WITH_UV \

  435.                     movq_m2r(ptr[0],mm0); \

  436.                     movq_m2r(ptr[8],mm1);  \

  437.                     movq_r2r(mm0, mm4); \

  438.                     punpcklbw_r2r(mm1,mm0); \

  439.                     punpckhbw_r2r(mm1,mm4); \

  440.                     movq_r2r(mm0,mm5); \

  441.                     punpcklbw_r2r(mm4,mm0); \

  442.                     punpckhbw_r2r(mm4,mm5); \

  443.                     movq_r2r(mm0,mm1); \

  444.                     punpcklbw_r2r(mm5,mm1); \

  445.                     movq_r2m(mm1,lum[0]); \

  446.                     movq_m2r(ptr[16],mm2); \

  447.                     movq_m2r(ptr[24],mm1); \

  448.                     movq_r2r(mm2,mm4); \

  449.                     punpcklbw_r2r(mm1,mm2); \

  450.                     punpckhbw_r2r(mm1,mm4); \

  451.                     movq_r2r(mm2,mm3); \

  452.                     punpcklbw_r2r(mm4,mm2); \

  453.                     punpckhbw_r2r(mm4,mm3); \

  454.                     movq_r2r(mm2,mm1); \

  455.                     punpcklbw_r2r(mm3,mm1); \

  456.                     movq_r2m(mm1,lum[8]); \

  457.                     punpckhdq_r2r(mm2,mm0); \

  458.                     punpckhdq_r2r(mm3,mm5); \

  459.                     movq_r2m(mm0,cb[0]); \

  460.                     movq_r2m(mm5,cr[0]);

  461. 

  462. #define LINE_NO_UV \

  463.                     movq_m2r(ptr[0],mm0);\

  464.                     movq_m2r(ptr[8],mm1);\

  465.                     movq_r2r(mm0, mm4);\

  466.                     punpcklbw_r2r(mm1,mm0); \

  467.                     punpckhbw_r2r(mm1,mm4);\

  468.                     movq_r2r(mm0,mm5);\

  469.                     punpcklbw_r2r(mm4,mm0);\

  470.                     punpckhbw_r2r(mm4,mm5);\

  471.                     movq_r2r(mm0,mm1);\

  472.                     punpcklbw_r2r(mm5,mm1);\

  473.                     movq_r2m(mm1,lum[0]);\

  474.                     movq_m2r(ptr[16],mm2);\

  475.                     movq_m2r(ptr[24],mm1);\

  476.                     movq_r2r(mm2,mm4);\

  477.                     punpcklbw_r2r(mm1,mm2);\

  478.                     punpckhbw_r2r(mm1,mm4);\

  479.                     movq_r2r(mm2,mm3);\

  480.                     punpcklbw_r2r(mm4,mm2);\

  481.                     punpckhbw_r2r(mm4,mm3);\

  482.                     movq_r2r(mm2,mm1);\

  483.                     punpcklbw_r2r(mm3,mm1);\

  484.                     movq_r2m(mm1,lum[8]);

  485. 

  486. #define LINE_WITHUV_AVG \

  487.                     movq_m2r(ptr[0], mm0);\

  488.                     movq_m2r(ptr[8], mm1);\

  489.                     movq_r2r(mm0, mm4);\

  490.                     punpcklbw_r2r(mm1,mm0);\

  491.                     punpckhbw_r2r(mm1,mm4);\

  492.                     movq_r2r(mm0,mm5);\

  493.                     punpcklbw_r2r(mm4,mm0);\

  494.                     punpckhbw_r2r(mm4,mm5);\

  495.                     movq_r2r(mm0,mm1);\

  496.                     movq_r2r(mm5,mm2);\

  497.                     punpcklbw_r2r(mm7,mm1);\

  498.                     punpcklbw_r2r(mm7,mm2);\

  499.                     paddw_r2r(mm6,mm1);\

  500.                     paddw_r2r(mm2,mm1);\

  501.                     psraw_i2r(1,mm1);\

  502.                     packuswb_r2r(mm7,mm1);\

  503.                     movd_r2m(mm1,lum[0]);\

  504.                     movq_m2r(ptr[16],mm2);\

  505.                     movq_m2r(ptr[24],mm1);\

  506.                     movq_r2r(mm2,mm4);\

  507.                     punpcklbw_r2r(mm1,mm2);\

  508.                     punpckhbw_r2r(mm1,mm4);\

  509.                     movq_r2r(mm2,mm3);\

  510.                     punpcklbw_r2r(mm4,mm2);\

  511.                     punpckhbw_r2r(mm4,mm3);\

  512.                     movq_r2r(mm2,mm1);\

  513.                     movq_r2r(mm3,mm4);\

  514.                     punpcklbw_r2r(mm7,mm1);\

  515.                     punpcklbw_r2r(mm7,mm4);\

  516.                     paddw_r2r(mm6,mm1);\

  517.                     paddw_r2r(mm4,mm1);\

  518.                     psraw_i2r(1,mm1);\

  519.                     packuswb_r2r(mm7,mm1);\

  520.                     movd_r2m(mm1,lum[4]);\

  521.                     punpckhbw_r2r(mm7,mm0);\

  522.                     punpckhbw_r2r(mm7,mm2);\

  523.                     paddw_r2r(mm6,mm0);\

  524.                     paddw_r2r(mm2,mm0);\

  525.                     psraw_i2r(1,mm0);\

  526.                     packuswb_r2r(mm7,mm0);\

  527.                     punpckhbw_r2r(mm7,mm5);\

  528.                     punpckhbw_r2r(mm7,mm3);\

  529.                     paddw_r2r(mm6,mm5);\

  530.                     paddw_r2r(mm3,mm5);\

  531.                     psraw_i2r(1,mm5);\

  532.                     packuswb_r2r(mm7,mm5);\

  533.                     movd_r2m(mm0,cb[0]);\

  534.                     movd_r2m(mm5,cr[0]);

  535. 

  536. #define LINE_NOUV_AVG \

  537.                     movq_m2r(ptr[0],mm0);\

  538.                     movq_m2r(ptr[8],mm1);\

  539.                     pand_r2r(mm5,mm0);\

  540.                     pand_r2r(mm5,mm1);\

  541.                     pmaddwd_r2r(mm6,mm0);\

  542.                     pmaddwd_r2r(mm6,mm1);\

  543.                     packssdw_r2r(mm1,mm0);\

  544.                     paddw_r2r(mm6,mm0);\

  545.                     psraw_i2r(1,mm0);\

  546.                     movq_m2r(ptr[16],mm2);\

  547.                     movq_m2r(ptr[24],mm3);\

  548.                     pand_r2r(mm5,mm2);\

  549.                     pand_r2r(mm5,mm3);\

  550.                     pmaddwd_r2r(mm6,mm2);\

  551.                     pmaddwd_r2r(mm6,mm3);\

  552.                     packssdw_r2r(mm3,mm2);\

  553.                     paddw_r2r(mm6,mm2);\

  554.                     psraw_i2r(1,mm2);\

  555.                     packuswb_r2r(mm2,mm0);\

  556.                     movq_r2m(mm0,lum[0]);

  557. 

  558. #define DEINT_LINE_LUM(ptroff) \

  559.                     movd_m2r(lum_m4[(ptroff)],mm0);\

  560.                     movd_m2r(lum_m3[(ptroff)],mm1);\

  561.                     movd_m2r(lum_m2[(ptroff)],mm2);\

  562.                     movd_m2r(lum_m1[(ptroff)],mm3);\

  563.                     movd_m2r(lum[(ptroff)],mm4);\

  564.                     punpcklbw_r2r(mm7,mm0);\

  565.                     movd_r2m(mm2,lum_m4[(ptroff)]);\

  566.                     punpcklbw_r2r(mm7,mm1);\

  567.                     punpcklbw_r2r(mm7,mm2);\

  568.                     punpcklbw_r2r(mm7,mm3);\

  569.                     punpcklbw_r2r(mm7,mm4);\

  570.                     psllw_i2r(2,mm1);\

  571.                     psllw_i2r(1,mm2);\

  572.                     paddw_r2r(mm6,mm1);\

  573.                     psllw_i2r(2,mm3);\

  574.                     paddw_r2r(mm2,mm1);\

  575.                     paddw_r2r(mm4,mm0);\

  576.                     paddw_r2r(mm3,mm1);\

  577.                     psubusw_r2r(mm0,mm1);\

  578.                     psrlw_i2r(3,mm1);\

  579.                     packuswb_r2r(mm7,mm1);\

  580.                     movd_r2m(mm1,lum_m2[(ptroff)]);

  581. 

  582. #else

  583. #include "libavcodec/dsputil.h"

  584. 

  585. #define LINE_WITH_UV \

  586.                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\

  587.                     cb[0]=ptr[1];cb[1]=ptr[5];\

  588.                     cr[0]=ptr[3];cr[1]=ptr[7];\

  589.                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\

  590.                     cb[2]=ptr[9];cb[3]=ptr[13];\

  591.                     cr[2]=ptr[11];cr[3]=ptr[15];\

  592.                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\

  593.                     cb[4]=ptr[17];cb[5]=ptr[21];\

  594.                     cr[4]=ptr[19];cr[5]=ptr[23];\

  595.                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\

  596.                     cb[6]=ptr[25];cb[7]=ptr[29];\

  597.                     cr[6]=ptr[27];cr[7]=ptr[31];

  598. 

  599. #define LINE_NO_UV \

  600.                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\

  601.                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\

  602.                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\

  603.                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];

  604. 

  605. #define LINE_WITHUV_AVG \

  606.                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \

  607.                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \

  608.                     sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \

  609.                     sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \

  610.                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \

  611.                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \

  612.                     sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \

  613.                     sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \

  614.                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \

  615.                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \

  616.                     sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \

  617.                     sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \

  618.                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \

  619.                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \

  620.                     sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \

  621.                     sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;

  622. 

  623. #define LINE_NOUV_AVG \

  624.                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \

  625.                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \

  626.                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \

  627.                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \

  628.                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \

  629.                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \

  630.                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \

  631.                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;

  632. 

  633. #define DEINT_LINE_LUM(ptroff) \

  634.                     sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \

  635.                     lum_m4[(ptroff)]=lum_m2[(ptroff)];\

  636.                     lum_m2[(ptroff)]=cm[(sum+4)>>3];\

  637.                     sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \

  638.                     lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\

  639.                     lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\

  640.                     sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \

  641.                     lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\

  642.                     lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\

  643.                     sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \

  644.                     lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\

  645.                     lum_m2[(ptroff)+3]=cm[(sum+4)>>3];

  646. 

  647. #endif

  648. 

  649. 

  650. /* Read two fields separately. */

  651. static int aiw_read_picture(VideoData *s, uint8_t *data)

  652. {

  653.     uint8_t *ptr, *lum, *cb, *cr;

  654.     int h;

  655. #ifndef HAVE_MMX

  656.     int sum;

  657. #endif

  658.     uint8_t* src = s->src_mem;

  659.     uint8_t *ptrend = &src[s->width*2];

  660.     lum=data;

  661.     cb=&lum[s->width*s->height];

  662.     cr=&cb[(s->width*s->height)/4];

  663.     if (s->deint == 0 && s->halfw == 0) {

  664.         while (read(s->fd,src,s->width*2) < 0) {

  665.             usleep(100);

  666.         }

  667.         for (h = 0; h < s->height-2; h+=2) {

  668.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {

  669.                 LINE_WITH_UV

  670.                     }

  671.             read(s->fd,src,s->width*2);

  672.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {

  673.                 LINE_NO_UV

  674.                     }

  675.             read(s->fd,src,s->width*2);

  676.         }

  677.         /*

  678.          * Do last two lines

  679.          */

  680.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {

  681.             LINE_WITH_UV

  682.                 }

  683.         read(s->fd,src,s->width*2);

  684.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {

  685.             LINE_NO_UV

  686.                 }

  687.         /* drop second field */

  688.         while (read(s->fd,src,s->width*2) < 0) {

  689.             usleep(100);

  690.         }

  691.         for (h = 0; h < s->height - 1; h++) {

  692.             read(s->fd,src,s->width*2);

  693.         }

  694.     } else if (s->halfw == 1) {

  695. #ifdef HAVE_MMX

  696.         mmx_t rounder;

  697.         mmx_t masker;

  698.         rounder.uw[0]=1;

  699.         rounder.uw[1]=1;

  700.         rounder.uw[2]=1;

  701.         rounder.uw[3]=1;

  702.         masker.ub[0]=0xff;

  703.         masker.ub[1]=0;

  704.         masker.ub[2]=0xff;

  705.         masker.ub[3]=0;

  706.         masker.ub[4]=0xff;

  707.         masker.ub[5]=0;

  708.         masker.ub[6]=0xff;

  709.         masker.ub[7]=0;

  710.         pxor_r2r(mm7,mm7);

  711.         movq_m2r(rounder,mm6);

  712. #endif

  713.         while (read(s->fd,src,s->width*4) < 0) {

  714.             usleep(100);

  715.         }

  716.         ptrend = &src[s->width*4];

  717.         for (h = 0; h < s->height-2; h+=2) {

  718.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {

  719.                 LINE_WITHUV_AVG

  720.                     }

  721.             read(s->fd,src,s->width*4);

  722. #ifdef HAVE_MMX

  723.             movq_m2r(masker,mm5);

  724. #endif

  725.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {

  726.                 LINE_NOUV_AVG

  727.                     }

  728.             read(s->fd,src,s->width*4);

  729.         }

  730.         /*

  731.  * Do last two lines

  732.  */

  733.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {

  734.             LINE_WITHUV_AVG

  735.                 }

  736.         read(s->fd,src,s->width*4);

  737. #ifdef HAVE_MMX

  738.         movq_m2r(masker,mm5);

  739. #endif

  740.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {

  741.             LINE_NOUV_AVG

  742.                 }

  743.         /* drop second field */

  744.         while (read(s->fd,src,s->width*4) < 0) {

  745.             usleep(100);

  746.         }

  747.         for (h = 0; h < s->height - 1; h++) {

  748.             read(s->fd,src,s->width*4);

  749.         }

  750.     } else {

  751.         uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;

  752. #ifdef HAVE_MMX

  753.         mmx_t rounder;

  754.         rounder.uw[0]=4;

  755.         rounder.uw[1]=4;

  756.         rounder.uw[2]=4;

  757.         rounder.uw[3]=4;

  758.         movq_m2r(rounder,mm6);

  759.         pxor_r2r(mm7,mm7);

  760. #else

  761.         uint8_t *cm = cropTbl + MAX_NEG_CROP;

  762. #endif

  763. 

  764.         /* read two fields and deinterlace them */

  765.         while (read(s->fd,src,s->width*2) < 0) {

  766.             usleep(100);

  767.         }

  768.         for (h = 0; h < (s->height/2)-2; h+=2) {

  769.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {

  770.                 LINE_WITH_UV

  771.                     }

  772.             read(s->fd,src,s->width*2);

  773.             /* skip a luminance line - will be filled in later */

  774.             lum += s->width;

  775.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {

  776.                 LINE_WITH_UV

  777.                     }

  778.             /* skip a luminance line - will be filled in later */

  779.             lum += s->width;

  780.             read(s->fd,src,s->width*2);

  781.         }

  782.         /*

  783.  * Do last two lines

  784.  */

  785.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {

  786.             LINE_WITH_UV

  787.                 }

  788.         /* skip a luminance line - will be filled in later */

  789.         lum += s->width;

  790.         read(s->fd,src,s->width*2);

  791.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {

  792.             LINE_WITH_UV

  793.                 }

  794.         /*

  795.  *

  796.  * SECOND FIELD

  797.  *

  798.  */

  799.         lum=&data[s->width];

  800.         while (read(s->fd,src,s->width*2) < 0) {

  801.             usleep(10);

  802.         }

  803.         /* First (and last) two lines not interlaced */

  804.         for (h = 0; h < 2; h++) {

  805.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {

  806.                 LINE_NO_UV

  807.                     }

  808.             read(s->fd,src,s->width*2);

  809.             /* skip a luminance line */

  810.             lum += s->width;

  811.         }

  812.         lum_m1=&lum[-s->width];

  813.         lum_m2=&lum_m1[-s->width];

  814.         lum_m3=&lum_m2[-s->width];

  815.         memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);

  816.         for (; h < (s->height/2)-1; h++) {

  817.             lum_m4=s->lum_m4_mem;

  818.             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {

  819.                 LINE_NO_UV

  820. 

  821.                     DEINT_LINE_LUM(0)

  822.                     DEINT_LINE_LUM(4)

  823.                     DEINT_LINE_LUM(8)

  824.                     DEINT_LINE_LUM(12)

  825.                     }

  826.             read(s->fd,src,s->width*2);

  827.             /* skip a luminance line */

  828.             lum += s->width;

  829.             lum_m1 += s->width;

  830.             lum_m2 += s->width;

  831.             lum_m3 += s->width;

  832.             //                lum_m4 += s->width;

  833.         }

  834.         /*

  835.  * Do last line

  836.  */

  837.         lum_m4=s->lum_m4_mem;

  838.         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {

  839.             LINE_NO_UV

  840. 

  841.                 DEINT_LINE_LUM(0)

  842.                 DEINT_LINE_LUM(4)

  843.                 DEINT_LINE_LUM(8)

  844.                 DEINT_LINE_LUM(12)

  845.                 }

  846.     }

  847. #ifdef HAVE_MMX

  848.     emms();

  849. #endif

  850.     return s->frame_size;

  851. }

  852. 

  853. static int aiw_close(VideoData *s)

  854. {

  855.     av_freep(&s->lum_m4_mem);

  856.     av_freep(&s->src_mem);

  857.     return 0;

  858. }