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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. const char *v4l_device = "/dev/video";

  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;

  65.     int desired_palette;

  66.     struct video_audio audio;

  67. 

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

  69.         return -1;

  70.     

  71.     width = ap->width;

  72.     height = ap->height;

  73.     frame_rate = ap->frame_rate;

  74. 

  75.     st = av_new_stream(s1, 0);

  76.     if (!st)

  77.         return -ENOMEM;

  78. 

  79.     s->width = width;

  80.     s->height = height;

  81.     s->frame_rate = frame_rate;

  82. 

  83.     video_fd = open(v4l_device, O_RDWR);

  84.     if (video_fd < 0) {

  85.         perror(v4l_device);

  86.         goto fail;

  87.     }

  88.     

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

  90.         perror("VIDIOCGCAP");

  91.         goto fail;

  92.     }

  93. 

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

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

  96.         goto fail;

  97.     }

  98. 

  99.     desired_palette = -1;

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

  101.         desired_palette = VIDEO_PALETTE_YUV420P;

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

  103.         desired_palette = VIDEO_PALETTE_YUV422;

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

  105.         desired_palette = VIDEO_PALETTE_RGB24;

  106.     }    

  107.     

  108.     /* unmute audio */

  109.     audio.audio = 0;

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

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

  112.     audio.flags &= ~VIDEO_AUDIO_MUTE;

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

  114. 

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

  116.     if (ret < 0) {

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

  118.         struct video_window win;

  119.         struct video_picture pict;

  120.         int val;

  121. 

  122.         win.x = 0;

  123.         win.y = 0;

  124.         win.width = width;

  125.         win.height = height;

  126.         win.chromakey = -1;

  127.         win.flags = 0;

  128. 

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

  130. 

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

  132. #if 0

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

  134.                pict.colour,

  135.                pict.hue,

  136.                pict.brightness,

  137.                pict.contrast,

  138.                pict.whiteness);

  139. #endif        

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

  141.         pict.palette = desired_palette;

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

  143.             pict.palette=VIDEO_PALETTE_YUV420P;

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

  145.             if (ret < 0) {

  146.                 pict.palette=VIDEO_PALETTE_YUV422;

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

  148.                 if (ret < 0) {

  149.                     pict.palette=VIDEO_PALETTE_RGB24;

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

  151.                     if (ret < 0) 

  152.                         goto fail1;

  153.                 }

  154.             }

  155.         }

  156. 

  157.         s->frame_format = pict.palette;

  158. 

  159.         val = 1;

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

  161. 

  162.         s->time_frame = av_gettime();

  163.         s->use_mmap = 0;

  164.         

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

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

  167.             if (aiw_init(s) < 0)

  168.                 goto fail;

  169.             s->aiw_enabled = 1;

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

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

  172.             s->frame_format = VIDEO_PALETTE_YUV420P;

  173.         }

  174.     } else {

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

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

  177.             perror("mmap");

  178.             goto fail;

  179.         }

  180.         s->gb_frame = 0;

  181.         s->time_frame = av_gettime();

  182.         

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

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

  185.         s->gb_buf.height = height;

  186.         s->gb_buf.width = width;

  187.         s->gb_buf.format = desired_palette;

  188. 

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

  190.             s->gb_buf.format = VIDEO_PALETTE_YUV420P;

  191.             

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

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

  194.                 /* try YUV422 */

  195.                 s->gb_buf.format = VIDEO_PALETTE_YUV422;

  196.                 

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

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

  199.                     /* try RGB24 */

  200.                     s->gb_buf.format = VIDEO_PALETTE_RGB24;

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

  202.                 }

  203.             }

  204.         }

  205.         if (ret < 0) {

  206.             if (errno != EAGAIN) {

  207.             fail1:

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

  209.             } else {

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

  211.             }

  212.             goto fail;

  213.         }

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

  215.         s->use_mmap = 1;

  216.     }

  217. 

  218.     switch(s->frame_format) {

  219.     case VIDEO_PALETTE_YUV420P:

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

  221.         st->codec.pix_fmt = PIX_FMT_YUV420P;

  222.         break;

  223.     case VIDEO_PALETTE_YUV422:

  224.         frame_size = width * height * 2;

  225.         st->codec.pix_fmt = PIX_FMT_YUV422;

  226.         break;

  227.     case VIDEO_PALETTE_RGB24:

  228.         frame_size = width * height * 3;

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

  230.         break;

  231.     default:

  232.         goto fail;

  233.     }

  234.     s->fd = video_fd;

  235.     s->frame_size = frame_size;

  236.     

  237.     st->codec.codec_type = CODEC_TYPE_VIDEO;

  238.     st->codec.codec_id = CODEC_ID_RAWVIDEO;

  239.     st->codec.width = width;

  240.     st->codec.height = height;

  241.     st->codec.frame_rate = frame_rate;

  242.     

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

  244. 

  245.     return 0;

  246.  fail:

  247.     if (video_fd >= 0)

  248.         close(video_fd);

  249.     av_free(st);

  250.     return -EIO;

  251. }

  252. 

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

  254. {

  255.     UINT8 *ptr;

  256. 

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

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

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

  260.         if (errno == EAGAIN)

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

  262.         else

  263.             perror("VIDIOCMCAPTURE");

  264.         return -EIO;

  265.     }

  266. 

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

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

  269. 

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

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

  272. 

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

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

  275. 

  276.     return s->frame_size;

  277. }

  278. 

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

  280. {

  281.     VideoData *s = s1->priv_data;

  282.     INT64 curtime, delay;

  283.     struct timespec ts;

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

  285. 

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

  287.     s->time_frame += per_frame;

  288. 

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

  290.     for(;;) {

  291.         curtime = av_gettime();

  292.         delay = s->time_frame - curtime;

  293.         if (delay <= 0) {

  294.             if (delay < -per_frame) {

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

  296.                 s->time_frame += per_frame;

  297.             }

  298.             break;

  299.         }    

  300.         ts.tv_sec = delay / 1000000;

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

  302.         nanosleep(&ts, NULL);

  303.     }

  304. 

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

  306.         return -EIO;

  307. 

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

  309. 

  310.     /* read one frame */

  311.     if (s->aiw_enabled) {

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

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

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

  315.     } else {

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

  317.             return -EIO;

  318.         return s->frame_size;

  319.     }

  320. }

  321. 

  322. static int grab_read_close(AVFormatContext *s1)

  323. {

  324.     VideoData *s = s1->priv_data;

  325. 

  326.     if (s->aiw_enabled)

  327.         aiw_close(s);

  328. 

  329.     if (s->use_mmap)

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

  331. 

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

  333.        return its state correctly */

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

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

  336. 

  337.     close(s->fd);

  338.     return 0;

  339. }

  340. 

  341. static AVInputFormat video_grab_device_format = {

  342.     "video_grab_device",

  343.     "video grab",

  344.     sizeof(VideoData),

  345.     NULL,

  346.     grab_read_header,

  347.     grab_read_packet,

  348.     grab_read_close,

  349.     .flags = AVFMT_NOFILE,

  350. };

  351. 

  352. /* All in Wonder specific stuff */

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

  354. 

  355. static int aiw_init(VideoData *s)

  356. {

  357.     int width, height;

  358. 

  359.     width = s->width;

  360.     height = s->height;

  361. 

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

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

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

  365.         

  366.         s->deint=0;

  367.         s->halfw=0;

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

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

  370.     } else {

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

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

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

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

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

  376.         goto fail;

  377.     }

  378. 

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

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

  381.     } else {

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

  383.     }

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

  385. 

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

  387.     if (!s->lum_m4_mem)

  388.         goto fail;

  389.     return 0;

  390.  fail:

  391.     av_freep(&s->src_mem);

  392.     av_freep(&s->lum_m4_mem);

  393.     return -1;

  394. }

  395. 

  396. #ifdef HAVE_MMX

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

  398. 

  399. #define LINE_WITH_UV \

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

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

  402.                     movq_r2r(mm0, mm4); \

  403.                     punpcklbw_r2r(mm1,mm0); \

  404.                     punpckhbw_r2r(mm1,mm4); \

  405.                     movq_r2r(mm0,mm5); \

  406.                     punpcklbw_r2r(mm4,mm0); \

  407.                     punpckhbw_r2r(mm4,mm5); \

  408.                     movq_r2r(mm0,mm1); \

  409.                     punpcklbw_r2r(mm5,mm1); \

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

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

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

  413.                     movq_r2r(mm2,mm4); \

  414.                     punpcklbw_r2r(mm1,mm2); \

  415.                     punpckhbw_r2r(mm1,mm4); \

  416.                     movq_r2r(mm2,mm3); \

  417.                     punpcklbw_r2r(mm4,mm2); \

  418.                     punpckhbw_r2r(mm4,mm3); \

  419.                     movq_r2r(mm2,mm1); \

  420.                     punpcklbw_r2r(mm3,mm1); \

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

  422.                     punpckhdq_r2r(mm2,mm0); \

  423.                     punpckhdq_r2r(mm3,mm5); \

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

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

  426. 

  427. #define LINE_NO_UV \

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

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

  430.                     movq_r2r(mm0, mm4);\

  431.                     punpcklbw_r2r(mm1,mm0); \

  432.                     punpckhbw_r2r(mm1,mm4);\

  433.                     movq_r2r(mm0,mm5);\

  434.                     punpcklbw_r2r(mm4,mm0);\

  435.                     punpckhbw_r2r(mm4,mm5);\

  436.                     movq_r2r(mm0,mm1);\

  437.                     punpcklbw_r2r(mm5,mm1);\

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

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

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

  441.                     movq_r2r(mm2,mm4);\

  442.                     punpcklbw_r2r(mm1,mm2);\

  443.                     punpckhbw_r2r(mm1,mm4);\

  444.                     movq_r2r(mm2,mm3);\

  445.                     punpcklbw_r2r(mm4,mm2);\

  446.                     punpckhbw_r2r(mm4,mm3);\

  447.                     movq_r2r(mm2,mm1);\

  448.                     punpcklbw_r2r(mm3,mm1);\

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

  450. 

  451. #define LINE_WITHUV_AVG \

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

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

  454.                     movq_r2r(mm0, mm4);\

  455.                     punpcklbw_r2r(mm1,mm0);\

  456.                     punpckhbw_r2r(mm1,mm4);\

  457.                     movq_r2r(mm0,mm5);\

  458.                     punpcklbw_r2r(mm4,mm0);\

  459.                     punpckhbw_r2r(mm4,mm5);\

  460.                     movq_r2r(mm0,mm1);\

  461.                     movq_r2r(mm5,mm2);\

  462.                     punpcklbw_r2r(mm7,mm1);\

  463.                     punpcklbw_r2r(mm7,mm2);\

  464.                     paddw_r2r(mm6,mm1);\

  465.                     paddw_r2r(mm2,mm1);\

  466.                     psraw_i2r(1,mm1);\

  467.                     packuswb_r2r(mm7,mm1);\

  468.                     movd_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.                     movq_r2r(mm3,mm4);\

  479.                     punpcklbw_r2r(mm7,mm1);\

  480.                     punpcklbw_r2r(mm7,mm4);\

  481.                     paddw_r2r(mm6,mm1);\

  482.                     paddw_r2r(mm4,mm1);\

  483.                     psraw_i2r(1,mm1);\

  484.                     packuswb_r2r(mm7,mm1);\

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

  486.                     punpckhbw_r2r(mm7,mm0);\

  487.                     punpckhbw_r2r(mm7,mm2);\

  488.                     paddw_r2r(mm6,mm0);\

  489.                     paddw_r2r(mm2,mm0);\

  490.                     psraw_i2r(1,mm0);\

  491.                     packuswb_r2r(mm7,mm0);\

  492.                     punpckhbw_r2r(mm7,mm5);\

  493.                     punpckhbw_r2r(mm7,mm3);\

  494.                     paddw_r2r(mm6,mm5);\

  495.                     paddw_r2r(mm3,mm5);\

  496.                     psraw_i2r(1,mm5);\

  497.                     packuswb_r2r(mm7,mm5);\

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

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

  500. 

  501. #define LINE_NOUV_AVG \

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

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

  504.                     pand_r2r(mm5,mm0);\

  505.                     pand_r2r(mm5,mm1);\

  506.                     pmaddwd_r2r(mm6,mm0);\

  507.                     pmaddwd_r2r(mm6,mm1);\

  508.                     packssdw_r2r(mm1,mm0);\

  509.                     paddw_r2r(mm6,mm0);\

  510.                     psraw_i2r(1,mm0);\

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

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

  513.                     pand_r2r(mm5,mm2);\

  514.                     pand_r2r(mm5,mm3);\

  515.                     pmaddwd_r2r(mm6,mm2);\

  516.                     pmaddwd_r2r(mm6,mm3);\

  517.                     packssdw_r2r(mm3,mm2);\

  518.                     paddw_r2r(mm6,mm2);\

  519.                     psraw_i2r(1,mm2);\

  520.                     packuswb_r2r(mm2,mm0);\

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

  522. 

  523. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

  529.                     punpcklbw_r2r(mm7,mm0);\

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

  531.                     punpcklbw_r2r(mm7,mm1);\

  532.                     punpcklbw_r2r(mm7,mm2);\

  533.                     punpcklbw_r2r(mm7,mm3);\

  534.                     punpcklbw_r2r(mm7,mm4);\

  535.                     psllw_i2r(2,mm1);\

  536.                     psllw_i2r(1,mm2);\

  537.                     paddw_r2r(mm6,mm1);\

  538.                     psllw_i2r(2,mm3);\

  539.                     paddw_r2r(mm2,mm1);\

  540.                     paddw_r2r(mm4,mm0);\

  541.                     paddw_r2r(mm3,mm1);\

  542.                     psubusw_r2r(mm0,mm1);\

  543.                     psrlw_i2r(3,mm1);\

  544.                     packuswb_r2r(mm7,mm1);\

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

  546. 

  547. #else

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

  549. 

  550. #define LINE_WITH_UV \

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

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

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

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

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

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

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

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

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

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

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

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

  563. 

  564. #define LINE_NO_UV \

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

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

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

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

  569. 

  570. #define LINE_WITHUV_AVG \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  587. 

  588. #define LINE_NOUV_AVG \

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

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

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

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

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

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

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

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

  597. 

  598. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

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

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

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

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

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

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

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

  611. 

  612. #endif

  613. 

  614. 

  615. /* Read two fields separately. */

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

  617. {

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

  619.     int h;

  620. #ifndef HAVE_MMX

  621.     int sum;

  622. #endif

  623.     UINT8* src = s->src_mem;

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

  625.     lum=data;

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

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

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

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

  630.             usleep(100);

  631.         }

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

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

  634.                 LINE_WITH_UV

  635.                     }

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

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

  638.                 LINE_NO_UV

  639.                     }

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

  641.         }

  642.         /*

  643.          * Do last two lines

  644.          */

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

  646.             LINE_WITH_UV

  647.                 }

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

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

  650.             LINE_NO_UV

  651.                 }

  652.         /* drop second field */

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

  654.             usleep(100);

  655.         }

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

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

  658.         }

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

  660. #ifdef HAVE_MMX

  661.         mmx_t rounder;

  662.         mmx_t masker;

  663.         rounder.uw[0]=1;

  664.         rounder.uw[1]=1;

  665.         rounder.uw[2]=1;

  666.         rounder.uw[3]=1;

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

  668.         masker.ub[1]=0;

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

  670.         masker.ub[3]=0;

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

  672.         masker.ub[5]=0;

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

  674.         masker.ub[7]=0;

  675.         pxor_r2r(mm7,mm7);

  676.         movq_m2r(rounder,mm6);

  677. #endif

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

  679.             usleep(100);

  680.         }

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

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

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

  684.                 LINE_WITHUV_AVG

  685.                     }

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

  687. #ifdef HAVE_MMX

  688.             movq_m2r(masker,mm5);

  689. #endif

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

  691.                 LINE_NOUV_AVG

  692.                     }

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

  694.         }

  695.         /*

  696.  * Do last two lines

  697.  */

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

  699.             LINE_WITHUV_AVG

  700.                 }

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

  702. #ifdef HAVE_MMX

  703.         movq_m2r(masker,mm5);

  704. #endif

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

  706.             LINE_NOUV_AVG

  707.                 }

  708.         /* drop second field */

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

  710.             usleep(100);

  711.         }

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

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

  714.         }

  715.     } else {

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

  717. #ifdef HAVE_MMX

  718.         mmx_t rounder;

  719.         rounder.uw[0]=4;

  720.         rounder.uw[1]=4;

  721.         rounder.uw[2]=4;

  722.         rounder.uw[3]=4;

  723.         movq_m2r(rounder,mm6);

  724.         pxor_r2r(mm7,mm7);

  725. #else

  726.         UINT8 *cm = cropTbl + MAX_NEG_CROP;

  727. #endif

  728. 

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

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

  731.             usleep(100);

  732.         }

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

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

  735.                 LINE_WITH_UV

  736.                     }

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

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

  739.             lum += s->width;

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

  741.                 LINE_WITH_UV

  742.                     }

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

  744.             lum += s->width;

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

  746.         }

  747.         /*

  748.  * Do last two lines

  749.  */

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

  751.             LINE_WITH_UV

  752.                 }

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

  754.         lum += s->width;

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

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

  757.             LINE_WITH_UV

  758.                 }

  759.         /*

  760.  *

  761.  * SECOND FIELD

  762.  *

  763.  */

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

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

  766.             usleep(10);

  767.         }

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

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

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

  771.                 LINE_NO_UV

  772.                     }

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

  774.             /* skip a luminance line */

  775.             lum += s->width;

  776.         }

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

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

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

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

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

  782.             lum_m4=s->lum_m4_mem;

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

  784.                 LINE_NO_UV

  785. 

  786.                     DEINT_LINE_LUM(0)

  787.                     DEINT_LINE_LUM(4)

  788.                     DEINT_LINE_LUM(8)

  789.                     DEINT_LINE_LUM(12)

  790.                     }

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

  792.             /* skip a luminance line */

  793.             lum += s->width;

  794.             lum_m1 += s->width;

  795.             lum_m2 += s->width;

  796.             lum_m3 += s->width;

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

  798.         }

  799.         /*

  800.  * Do last line

  801.  */

  802.         lum_m4=s->lum_m4_mem;

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

  804.             LINE_NO_UV

  805. 

  806.                 DEINT_LINE_LUM(0)

  807.                 DEINT_LINE_LUM(4)

  808.                 DEINT_LINE_LUM(8)

  809.                 DEINT_LINE_LUM(12)

  810.                 }

  811.     }

  812. #ifdef HAVE_MMX

  813.     emms();

  814. #endif

  815.     return s->frame_size;

  816. }

  817. 

  818. static int aiw_close(VideoData *s)

  819. {

  820.     av_freep(&s->lum_m4_mem);

  821.     av_freep(&s->src_mem);

  822.     return 0;

  823. }

  824. 

  825. int video_grab_init(void)

  826. {

  827.     av_register_input_format(&video_grab_device_format);

  828.     return 0;

  829. }