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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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  18.  */

  19. #include "avformat.h"

  20. #include <linux/videodev.h>

  21. #include <unistd.h>

  22. #include <fcntl.h>

  23. #include <sys/ioctl.h>

  24. #include <sys/mman.h>

  25. #include <sys/time.h>

  26. #include <time.h>

  27. 

  28. typedef struct {

  29.     int fd;

  30.     int frame_format; /* see VIDEO_PALETTE_xxx */

  31.     int use_mmap;

  32.     int width, height;

  33.     int frame_rate;

  34.     INT64 time_frame;

  35.     int frame_size;

  36.     struct video_capability video_cap;

  37.     struct video_audio audio_saved;

  38.     UINT8 *video_buf;

  39.     struct video_mbuf gb_buffers;

  40.     struct video_mmap gb_buf;

  41.     int gb_frame;

  42. 

  43.     /* ATI All In Wonder specific stuff */

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

  45.     int aiw_enabled;

  46.     int deint;

  47.     int halfw;

  48.     UINT8 *src_mem;

  49.     UINT8 *lum_m4_mem;

  50. } VideoData;

  51. 

  52. static int aiw_init(VideoData *s);

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

  54. static int aiw_close(VideoData *s);

  55. 

  56. static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)

  57. {

  58.     VideoData *s = s1->priv_data;

  59.     AVStream *st;

  60.     int width, height;

  61.     int video_fd, frame_size;

  62.     int ret, frame_rate;

  63.     int desired_palette;

  64.     struct video_audio audio;

  65. 

  66.     if (!ap || ap->width <= 0 || ap->height <= 0 || ap->frame_rate <= 0)

  67.         return -1;

  68.     

  69.     width = ap->width;

  70.     height = ap->height;

  71.     frame_rate = ap->frame_rate;

  72. 

  73.     st = av_new_stream(s1, 0);

  74.     if (!st)

  75.         return -ENOMEM;

  76. 

  77.     s->width = width;

  78.     s->height = height;

  79.     s->frame_rate = frame_rate;

  80. 

  81.     video_fd = open(video_device, O_RDWR);

  82.     if (video_fd < 0) {

  83.         perror(video_device);

  84.         goto fail;

  85.     }

  86.     

  87.     if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {

  88.         perror("VIDIOCGCAP");

  89.         goto fail;

  90.     }

  91. 

  92.     if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {

  93.         fprintf(stderr, "Fatal: grab device does not handle capture\n");

  94.         goto fail;

  95.     }

  96. 

  97.     desired_palette = -1;

  98.     if (st->codec.pix_fmt == PIX_FMT_YUV420P) {

  99.         desired_palette = VIDEO_PALETTE_YUV420P;

  100.     } else if (st->codec.pix_fmt == PIX_FMT_YUV422) {

  101.         desired_palette = VIDEO_PALETTE_YUV422;

  102.     } else if (st->codec.pix_fmt == PIX_FMT_BGR24) {

  103.         desired_palette = VIDEO_PALETTE_RGB24;

  104.     }    

  105.     

  106.     /* unmute audio */

  107.     audio.audio = 0;

  108.     ioctl(video_fd, VIDIOCGAUDIO, &audio);

  109.     memcpy(&s->audio_saved, &audio, sizeof(audio));

  110.     audio.flags &= ~VIDEO_AUDIO_MUTE;

  111.     ioctl(video_fd, VIDIOCSAUDIO, &audio);

  112. 

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

  114.     if (ret < 0) {

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

  116.         struct video_window win;

  117.         struct video_picture pict;

  118.         int val;

  119. 

  120.         win.x = 0;

  121.         win.y = 0;

  122.         win.width = width;

  123.         win.height = height;

  124.         win.chromakey = -1;

  125.         win.flags = 0;

  126. 

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

  128. 

  129.         ioctl(video_fd, VIDIOCGPICT, &pict);

  130. #if 0

  131.         printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",

  132.                pict.colour,

  133.                pict.hue,

  134.                pict.brightness,

  135.                pict.contrast,

  136.                pict.whiteness);

  137. #endif        

  138.         /* try to choose a suitable video format */

  139.         pict.palette = desired_palette;

  140.         if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {

  141.             pict.palette=VIDEO_PALETTE_YUV420P;

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

  143.             if (ret < 0) {

  144.                 pict.palette=VIDEO_PALETTE_YUV422;

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

  146.                 if (ret < 0) {

  147.                     pict.palette=VIDEO_PALETTE_RGB24;

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

  149.                     if (ret < 0) 

  150.                         goto fail1;

  151.                 }

  152.             }

  153.         }

  154. 

  155.         s->frame_format = pict.palette;

  156. 

  157.         val = 1;

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

  159. 

  160.         s->time_frame = av_gettime();

  161.         s->use_mmap = 0;

  162.         

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

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

  165.             if (aiw_init(s) < 0)

  166.                 goto fail;

  167.             s->aiw_enabled = 1;

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

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

  170.             s->frame_format = VIDEO_PALETTE_YUV420P;

  171.         }

  172.     } else {

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

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

  175.             perror("mmap");

  176.             goto fail;

  177.         }

  178.         s->gb_frame = 0;

  179.         s->time_frame = av_gettime();

  180.         

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

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

  183.         s->gb_buf.height = height;

  184.         s->gb_buf.width = width;

  185.         s->gb_buf.format = desired_palette;

  186. 

  187.         if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf)) < 0) {

  188.             s->gb_buf.format = VIDEO_PALETTE_YUV420P;

  189.             

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

  191.             if (ret < 0 && errno != EAGAIN) {

  192.                 /* try YUV422 */

  193.                 s->gb_buf.format = VIDEO_PALETTE_YUV422;

  194.                 

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

  196.                 if (ret < 0 && errno != EAGAIN) {

  197.                     /* try RGB24 */

  198.                     s->gb_buf.format = VIDEO_PALETTE_RGB24;

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

  200.                 }

  201.             }

  202.         }

  203.         if (ret < 0) {

  204.             if (errno != EAGAIN) {

  205.             fail1:

  206.                 fprintf(stderr, "Fatal: grab device does not support suitable format\n");

  207.             } else {

  208.                 fprintf(stderr,"Fatal: grab device does not receive any video signal\n");

  209.             }

  210.             goto fail;

  211.         }

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

  213.         s->use_mmap = 1;

  214.     }

  215. 

  216.     switch(s->frame_format) {

  217.     case VIDEO_PALETTE_YUV420P:

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

  219.         st->codec.pix_fmt = PIX_FMT_YUV420P;

  220.         break;

  221.     case VIDEO_PALETTE_YUV422:

  222.         frame_size = width * height * 2;

  223.         st->codec.pix_fmt = PIX_FMT_YUV422;

  224.         break;

  225.     case VIDEO_PALETTE_RGB24:

  226.         frame_size = width * height * 3;

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

  228.         break;

  229.     default:

  230.         goto fail;

  231.     }

  232.     s->fd = video_fd;

  233.     s->frame_size = frame_size;

  234.     

  235.     st->codec.codec_type = CODEC_TYPE_VIDEO;

  236.     st->codec.codec_id = CODEC_ID_RAWVIDEO;

  237.     st->codec.width = width;

  238.     st->codec.height = height;

  239.     st->codec.frame_rate = frame_rate;

  240.     

  241.     av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */

  242. 

  243.     return 0;

  244.  fail:

  245.     if (video_fd >= 0)

  246.         close(video_fd);

  247.     av_free(st);

  248.     return -EIO;

  249. }

  250. 

  251. static int v4l_mm_read_picture(VideoData *s, UINT8 *buf)

  252. {

  253.     UINT8 *ptr;

  254. 

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

  256.     s->gb_buf.frame = (s->gb_frame + 1) % s->gb_buffers.frames;

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

  258.         if (errno == EAGAIN)

  259.             fprintf(stderr,"Cannot Sync\n");

  260.         else

  261.             perror("VIDIOCMCAPTURE");

  262.         return -EIO;

  263.     }

  264. 

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

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

  267. 

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

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

  270. 

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

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

  273. 

  274.     return s->frame_size;

  275. }

  276. 

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

  278. {

  279.     VideoData *s = s1->priv_data;

  280.     INT64 curtime, delay;

  281.     struct timespec ts;

  282.     INT64 per_frame = (INT64_C(1000000) * FRAME_RATE_BASE) / s->frame_rate;

  283. 

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

  285.     s->time_frame += per_frame;

  286. 

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

  288.     for(;;) {

  289.         curtime = av_gettime();

  290.         delay = s->time_frame - curtime;

  291.         if (delay <= 0) {

  292.             if (delay < -per_frame) {

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

  294.                 s->time_frame += per_frame;

  295.             }

  296.             break;

  297.         }    

  298.         ts.tv_sec = delay / 1000000;

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

  300.         nanosleep(&ts, NULL);

  301.     }

  302. 

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

  304.         return -EIO;

  305. 

  306.     pkt->pts = curtime & ((1LL << 48) - 1);

  307. 

  308.     /* read one frame */

  309.     if (s->aiw_enabled) {

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

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

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

  313.     } else {

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

  315.             return -EIO;

  316.         return s->frame_size;

  317.     }

  318. }

  319. 

  320. static int grab_read_close(AVFormatContext *s1)

  321. {

  322.     VideoData *s = s1->priv_data;

  323. 

  324.     if (s->aiw_enabled)

  325.         aiw_close(s);

  326. 

  327.     if (s->use_mmap)

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

  329. 

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

  331.        return its state correctly */

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

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

  334. 

  335.     close(s->fd);

  336.     return 0;

  337. }

  338. 

  339. static AVInputFormat video_grab_device_format = {

  340.     "video4linux",

  341.     "video grab",

  342.     sizeof(VideoData),

  343.     NULL,

  344.     grab_read_header,

  345.     grab_read_packet,

  346.     grab_read_close,

  347.     .flags = AVFMT_NOFILE,

  348. };

  349. 

  350. /* All in Wonder specific stuff */

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

  352. 

  353. static int aiw_init(VideoData *s)

  354. {

  355.     int width, height;

  356. 

  357.     width = s->width;

  358.     height = s->height;

  359. 

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

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

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

  363.         

  364.         s->deint=0;

  365.         s->halfw=0;

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

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

  368.     } else {

  369.         fprintf(stderr,"\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");

  370.         fprintf(stderr," %dx%d  %dx%d %dx%d\n\n",

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

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

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

  374.         goto fail;

  375.     }

  376. 

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

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

  379.     } else {

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

  381.     }

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

  383. 

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

  385.     if (!s->lum_m4_mem)

  386.         goto fail;

  387.     return 0;

  388.  fail:

  389.     av_freep(&s->src_mem);

  390.     av_freep(&s->lum_m4_mem);

  391.     return -1;

  392. }

  393. 

  394. #ifdef HAVE_MMX

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

  396. 

  397. #define LINE_WITH_UV \

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

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

  400.                     movq_r2r(mm0, mm4); \

  401.                     punpcklbw_r2r(mm1,mm0); \

  402.                     punpckhbw_r2r(mm1,mm4); \

  403.                     movq_r2r(mm0,mm5); \

  404.                     punpcklbw_r2r(mm4,mm0); \

  405.                     punpckhbw_r2r(mm4,mm5); \

  406.                     movq_r2r(mm0,mm1); \

  407.                     punpcklbw_r2r(mm5,mm1); \

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

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

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

  411.                     movq_r2r(mm2,mm4); \

  412.                     punpcklbw_r2r(mm1,mm2); \

  413.                     punpckhbw_r2r(mm1,mm4); \

  414.                     movq_r2r(mm2,mm3); \

  415.                     punpcklbw_r2r(mm4,mm2); \

  416.                     punpckhbw_r2r(mm4,mm3); \

  417.                     movq_r2r(mm2,mm1); \

  418.                     punpcklbw_r2r(mm3,mm1); \

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

  420.                     punpckhdq_r2r(mm2,mm0); \

  421.                     punpckhdq_r2r(mm3,mm5); \

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

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

  424. 

  425. #define LINE_NO_UV \

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

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

  428.                     movq_r2r(mm0, mm4);\

  429.                     punpcklbw_r2r(mm1,mm0); \

  430.                     punpckhbw_r2r(mm1,mm4);\

  431.                     movq_r2r(mm0,mm5);\

  432.                     punpcklbw_r2r(mm4,mm0);\

  433.                     punpckhbw_r2r(mm4,mm5);\

  434.                     movq_r2r(mm0,mm1);\

  435.                     punpcklbw_r2r(mm5,mm1);\

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

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

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

  439.                     movq_r2r(mm2,mm4);\

  440.                     punpcklbw_r2r(mm1,mm2);\

  441.                     punpckhbw_r2r(mm1,mm4);\

  442.                     movq_r2r(mm2,mm3);\

  443.                     punpcklbw_r2r(mm4,mm2);\

  444.                     punpckhbw_r2r(mm4,mm3);\

  445.                     movq_r2r(mm2,mm1);\

  446.                     punpcklbw_r2r(mm3,mm1);\

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

  448. 

  449. #define LINE_WITHUV_AVG \

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

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

  452.                     movq_r2r(mm0, mm4);\

  453.                     punpcklbw_r2r(mm1,mm0);\

  454.                     punpckhbw_r2r(mm1,mm4);\

  455.                     movq_r2r(mm0,mm5);\

  456.                     punpcklbw_r2r(mm4,mm0);\

  457.                     punpckhbw_r2r(mm4,mm5);\

  458.                     movq_r2r(mm0,mm1);\

  459.                     movq_r2r(mm5,mm2);\

  460.                     punpcklbw_r2r(mm7,mm1);\

  461.                     punpcklbw_r2r(mm7,mm2);\

  462.                     paddw_r2r(mm6,mm1);\

  463.                     paddw_r2r(mm2,mm1);\

  464.                     psraw_i2r(1,mm1);\

  465.                     packuswb_r2r(mm7,mm1);\

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

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

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

  469.                     movq_r2r(mm2,mm4);\

  470.                     punpcklbw_r2r(mm1,mm2);\

  471.                     punpckhbw_r2r(mm1,mm4);\

  472.                     movq_r2r(mm2,mm3);\

  473.                     punpcklbw_r2r(mm4,mm2);\

  474.                     punpckhbw_r2r(mm4,mm3);\

  475.                     movq_r2r(mm2,mm1);\

  476.                     movq_r2r(mm3,mm4);\

  477.                     punpcklbw_r2r(mm7,mm1);\

  478.                     punpcklbw_r2r(mm7,mm4);\

  479.                     paddw_r2r(mm6,mm1);\

  480.                     paddw_r2r(mm4,mm1);\

  481.                     psraw_i2r(1,mm1);\

  482.                     packuswb_r2r(mm7,mm1);\

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

  484.                     punpckhbw_r2r(mm7,mm0);\

  485.                     punpckhbw_r2r(mm7,mm2);\

  486.                     paddw_r2r(mm6,mm0);\

  487.                     paddw_r2r(mm2,mm0);\

  488.                     psraw_i2r(1,mm0);\

  489.                     packuswb_r2r(mm7,mm0);\

  490.                     punpckhbw_r2r(mm7,mm5);\

  491.                     punpckhbw_r2r(mm7,mm3);\

  492.                     paddw_r2r(mm6,mm5);\

  493.                     paddw_r2r(mm3,mm5);\

  494.                     psraw_i2r(1,mm5);\

  495.                     packuswb_r2r(mm7,mm5);\

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

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

  498. 

  499. #define LINE_NOUV_AVG \

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

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

  502.                     pand_r2r(mm5,mm0);\

  503.                     pand_r2r(mm5,mm1);\

  504.                     pmaddwd_r2r(mm6,mm0);\

  505.                     pmaddwd_r2r(mm6,mm1);\

  506.                     packssdw_r2r(mm1,mm0);\

  507.                     paddw_r2r(mm6,mm0);\

  508.                     psraw_i2r(1,mm0);\

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

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

  511.                     pand_r2r(mm5,mm2);\

  512.                     pand_r2r(mm5,mm3);\

  513.                     pmaddwd_r2r(mm6,mm2);\

  514.                     pmaddwd_r2r(mm6,mm3);\

  515.                     packssdw_r2r(mm3,mm2);\

  516.                     paddw_r2r(mm6,mm2);\

  517.                     psraw_i2r(1,mm2);\

  518.                     packuswb_r2r(mm2,mm0);\

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

  520. 

  521. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

  527.                     punpcklbw_r2r(mm7,mm0);\

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

  529.                     punpcklbw_r2r(mm7,mm1);\

  530.                     punpcklbw_r2r(mm7,mm2);\

  531.                     punpcklbw_r2r(mm7,mm3);\

  532.                     punpcklbw_r2r(mm7,mm4);\

  533.                     psllw_i2r(2,mm1);\

  534.                     psllw_i2r(1,mm2);\

  535.                     paddw_r2r(mm6,mm1);\

  536.                     psllw_i2r(2,mm3);\

  537.                     paddw_r2r(mm2,mm1);\

  538.                     paddw_r2r(mm4,mm0);\

  539.                     paddw_r2r(mm3,mm1);\

  540.                     psubusw_r2r(mm0,mm1);\

  541.                     psrlw_i2r(3,mm1);\

  542.                     packuswb_r2r(mm7,mm1);\

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

  544. 

  545. #else

  546. #include "../libavcodec/dsputil.h"

  547. 

  548. #define LINE_WITH_UV \

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

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

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

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

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

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

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

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

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

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

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

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

  561. 

  562. #define LINE_NO_UV \

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

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

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

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

  567. 

  568. #define LINE_WITHUV_AVG \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  585. 

  586. #define LINE_NOUV_AVG \

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

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

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

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

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

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

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

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

  595. 

  596. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

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

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

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

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

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

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

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

  609. 

  610. #endif

  611. 

  612. 

  613. /* Read two fields separately. */

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

  615. {

  616.     UINT8 *ptr, *lum, *cb, *cr;

  617.     int h;

  618. #ifndef HAVE_MMX

  619.     int sum;

  620. #endif

  621.     UINT8* src = s->src_mem;

  622.     UINT8 *ptrend = &src[s->width*2];

  623.     lum=data;

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

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

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

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

  628.             usleep(100);

  629.         }

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

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

  632.                 LINE_WITH_UV

  633.                     }

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

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

  636.                 LINE_NO_UV

  637.                     }

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

  639.         }

  640.         /*

  641.          * Do last two lines

  642.          */

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

  644.             LINE_WITH_UV

  645.                 }

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

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

  648.             LINE_NO_UV

  649.                 }

  650.         /* drop second field */

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

  652.             usleep(100);

  653.         }

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

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

  656.         }

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

  658. #ifdef HAVE_MMX

  659.         mmx_t rounder;

  660.         mmx_t masker;

  661.         rounder.uw[0]=1;

  662.         rounder.uw[1]=1;

  663.         rounder.uw[2]=1;

  664.         rounder.uw[3]=1;

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

  666.         masker.ub[1]=0;

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

  668.         masker.ub[3]=0;

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

  670.         masker.ub[5]=0;

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

  672.         masker.ub[7]=0;

  673.         pxor_r2r(mm7,mm7);

  674.         movq_m2r(rounder,mm6);

  675. #endif

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

  677.             usleep(100);

  678.         }

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

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

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

  682.                 LINE_WITHUV_AVG

  683.                     }

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

  685. #ifdef HAVE_MMX

  686.             movq_m2r(masker,mm5);

  687. #endif

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

  689.                 LINE_NOUV_AVG

  690.                     }

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

  692.         }

  693.         /*

  694.  * Do last two lines

  695.  */

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

  697.             LINE_WITHUV_AVG

  698.                 }

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

  700. #ifdef HAVE_MMX

  701.         movq_m2r(masker,mm5);

  702. #endif

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

  704.             LINE_NOUV_AVG

  705.                 }

  706.         /* drop second field */

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

  708.             usleep(100);

  709.         }

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

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

  712.         }

  713.     } else {

  714.         UINT8 *lum_m1, *lum_m2, *lum_m3, *lum_m4;

  715. #ifdef HAVE_MMX

  716.         mmx_t rounder;

  717.         rounder.uw[0]=4;

  718.         rounder.uw[1]=4;

  719.         rounder.uw[2]=4;

  720.         rounder.uw[3]=4;

  721.         movq_m2r(rounder,mm6);

  722.         pxor_r2r(mm7,mm7);

  723. #else

  724.         UINT8 *cm = cropTbl + MAX_NEG_CROP;

  725. #endif

  726. 

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

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

  729.             usleep(100);

  730.         }

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

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

  733.                 LINE_WITH_UV

  734.                     }

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

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

  737.             lum += s->width;

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

  739.                 LINE_WITH_UV

  740.                     }

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

  742.             lum += s->width;

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

  744.         }

  745.         /*

  746.  * Do last two lines

  747.  */

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

  749.             LINE_WITH_UV

  750.                 }

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

  752.         lum += s->width;

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

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

  755.             LINE_WITH_UV

  756.                 }

  757.         /*

  758.  *

  759.  * SECOND FIELD

  760.  *

  761.  */

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

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

  764.             usleep(10);

  765.         }

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

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

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

  769.                 LINE_NO_UV

  770.                     }

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

  772.             /* skip a luminance line */

  773.             lum += s->width;

  774.         }

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

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

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

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

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

  780.             lum_m4=s->lum_m4_mem;

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

  782.                 LINE_NO_UV

  783. 

  784.                     DEINT_LINE_LUM(0)

  785.                     DEINT_LINE_LUM(4)

  786.                     DEINT_LINE_LUM(8)

  787.                     DEINT_LINE_LUM(12)

  788.                     }

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

  790.             /* skip a luminance line */

  791.             lum += s->width;

  792.             lum_m1 += s->width;

  793.             lum_m2 += s->width;

  794.             lum_m3 += s->width;

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

  796.         }

  797.         /*

  798.  * Do last line

  799.  */

  800.         lum_m4=s->lum_m4_mem;

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

  802.             LINE_NO_UV

  803. 

  804.                 DEINT_LINE_LUM(0)

  805.                 DEINT_LINE_LUM(4)

  806.                 DEINT_LINE_LUM(8)

  807.                 DEINT_LINE_LUM(12)

  808.                 }

  809.     }

  810. #ifdef HAVE_MMX

  811.     emms();

  812. #endif

  813.     return s->frame_size;

  814. }

  815. 

  816. static int aiw_close(VideoData *s)

  817. {

  818.     av_freep(&s->lum_m4_mem);

  819.     av_freep(&s->src_mem);

  820.     return 0;

  821. }

  822. 

  823. int video_grab_init(void)

  824. {

  825.     av_register_input_format(&video_grab_device_format);

  826.     return 0;

  827. }