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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.                     goto fail1;

  177.             }

  178.         }

  179.     }

  180. 

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

  182.     if (ret < 0) {

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

  184.         struct video_window win;

  185.         int val;

  186. 

  187.         win.x = 0;

  188.         win.y = 0;

  189.         win.width = width;

  190.         win.height = height;

  191.         win.chromakey = -1;

  192.         win.flags = 0;

  193. 

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

  195. 

  196.         s->frame_format = pict.palette;

  197. 

  198.         val = 1;

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

  200. 

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

  202.         s->use_mmap = 0;

  203. 

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

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

  206.             if (aiw_init(s) < 0)

  207.                 goto fail;

  208.             s->aiw_enabled = 1;

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

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

  211.             s->frame_format = VIDEO_PALETTE_YUV420P;

  212.         }

  213.     } else {

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

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

  216.             perror("mmap");

  217.             goto fail;

  218.         }

  219.         s->gb_frame = 0;

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

  221. 

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

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

  224.         s->gb_buf.height = height;

  225.         s->gb_buf.width = width;

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

  227. 

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

  229.         if (ret < 0) {

  230.             if (errno != EAGAIN) {

  231.             fail1:

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

  233.             } else {

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

  235.             }

  236.             goto fail;

  237.         }

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

  239.           s->gb_buf.frame = j;

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

  241.         }

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

  243.         s->use_mmap = 1;

  244.     }

  245. 

  246.     switch(s->frame_format) {

  247.     case VIDEO_PALETTE_YUV420P:

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

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

  250.         break;

  251.     case VIDEO_PALETTE_YUV422:

  252.         frame_size = width * height * 2;

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

  254.         break;

  255.     case VIDEO_PALETTE_RGB24:

  256.         frame_size = width * height * 3;

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

  258.         break;

  259.     default:

  260.         goto fail;

  261.     }

  262.     s->fd = video_fd;

  263.     s->frame_size = frame_size;

  264. 

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

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

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

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

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

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

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

  272. 

  273.     return 0;

  274.  fail:

  275.     if (video_fd >= 0)

  276.         close(video_fd);

  277.     av_free(st);

  278.     return AVERROR_IO;

  279. }

  280. 

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

  282. {

  283.     uint8_t *ptr;

  284. 

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

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

  287. 

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

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

  290. 

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

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

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

  294.         if (errno == EAGAIN)

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

  296.         else

  297.             perror("VIDIOCMCAPTURE");

  298.         return AVERROR_IO;

  299.     }

  300. 

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

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

  303. 

  304.     return s->frame_size;

  305. }

  306. 

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

  308. {

  309.     VideoData *s = s1->priv_data;

  310.     int64_t curtime, delay;

  311.     struct timespec ts;

  312. 

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

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

  315. 

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

  317.     for(;;) {

  318.         curtime = av_gettime();

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

  320.         if (delay <= 0) {

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

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

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

  324.             }

  325.             break;

  326.         }

  327.         ts.tv_sec = delay / 1000000;

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

  329.         nanosleep(&ts, NULL);

  330.     }

  331. 

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

  333.         return AVERROR_IO;

  334. 

  335.     pkt->pts = curtime;

  336. 

  337.     /* read one frame */

  338.     if (s->aiw_enabled) {

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

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

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

  342.     } else {

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

  344.             return AVERROR_IO;

  345.         return s->frame_size;

  346.     }

  347. }

  348. 

  349. static int grab_read_close(AVFormatContext *s1)

  350. {

  351.     VideoData *s = s1->priv_data;

  352. 

  353.     if (s->aiw_enabled)

  354.         aiw_close(s);

  355. 

  356.     if (s->use_mmap)

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

  358. 

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

  360.        return its state correctly */

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

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

  363. 

  364.     close(s->fd);

  365.     return 0;

  366. }

  367. 

  368. AVInputFormat video_grab_device_demuxer = {

  369.     "video4linux",

  370.     "video grab",

  371.     sizeof(VideoData),

  372.     NULL,

  373.     grab_read_header,

  374.     grab_read_packet,

  375.     grab_read_close,

  376.     .flags = AVFMT_NOFILE,

  377. };

  378. 

  379. /* All in Wonder specific stuff */

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

  381. 

  382. static int aiw_init(VideoData *s)

  383. {

  384.     int width, height;

  385. 

  386.     width = s->width;

  387.     height = s->height;

  388. 

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

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

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

  392. 

  393.         s->deint=0;

  394.         s->halfw=0;

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

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

  397.     } else {

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

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

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

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

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

  403.         goto fail;

  404.     }

  405. 

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

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

  408.     } else {

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

  410.     }

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

  412. 

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

  414.     if (!s->lum_m4_mem)

  415.         goto fail;

  416.     return 0;

  417.  fail:

  418.     av_freep(&s->src_mem);

  419.     av_freep(&s->lum_m4_mem);

  420.     return -1;

  421. }

  422. 

  423. #ifdef HAVE_MMX

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

  425. 

  426. #define LINE_WITH_UV \

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

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

  429.                     movq_r2r(mm0, mm4); \

  430.                     punpcklbw_r2r(mm1,mm0); \

  431.                     punpckhbw_r2r(mm1,mm4); \

  432.                     movq_r2r(mm0,mm5); \

  433.                     punpcklbw_r2r(mm4,mm0); \

  434.                     punpckhbw_r2r(mm4,mm5); \

  435.                     movq_r2r(mm0,mm1); \

  436.                     punpcklbw_r2r(mm5,mm1); \

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

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

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

  440.                     movq_r2r(mm2,mm4); \

  441.                     punpcklbw_r2r(mm1,mm2); \

  442.                     punpckhbw_r2r(mm1,mm4); \

  443.                     movq_r2r(mm2,mm3); \

  444.                     punpcklbw_r2r(mm4,mm2); \

  445.                     punpckhbw_r2r(mm4,mm3); \

  446.                     movq_r2r(mm2,mm1); \

  447.                     punpcklbw_r2r(mm3,mm1); \

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

  449.                     punpckhdq_r2r(mm2,mm0); \

  450.                     punpckhdq_r2r(mm3,mm5); \

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

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

  453. 

  454. #define LINE_NO_UV \

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

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

  457.                     movq_r2r(mm0, mm4);\

  458.                     punpcklbw_r2r(mm1,mm0); \

  459.                     punpckhbw_r2r(mm1,mm4);\

  460.                     movq_r2r(mm0,mm5);\

  461.                     punpcklbw_r2r(mm4,mm0);\

  462.                     punpckhbw_r2r(mm4,mm5);\

  463.                     movq_r2r(mm0,mm1);\

  464.                     punpcklbw_r2r(mm5,mm1);\

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

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

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

  468.                     movq_r2r(mm2,mm4);\

  469.                     punpcklbw_r2r(mm1,mm2);\

  470.                     punpckhbw_r2r(mm1,mm4);\

  471.                     movq_r2r(mm2,mm3);\

  472.                     punpcklbw_r2r(mm4,mm2);\

  473.                     punpckhbw_r2r(mm4,mm3);\

  474.                     movq_r2r(mm2,mm1);\

  475.                     punpcklbw_r2r(mm3,mm1);\

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

  477. 

  478. #define LINE_WITHUV_AVG \

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

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

  481.                     movq_r2r(mm0, mm4);\

  482.                     punpcklbw_r2r(mm1,mm0);\

  483.                     punpckhbw_r2r(mm1,mm4);\

  484.                     movq_r2r(mm0,mm5);\

  485.                     punpcklbw_r2r(mm4,mm0);\

  486.                     punpckhbw_r2r(mm4,mm5);\

  487.                     movq_r2r(mm0,mm1);\

  488.                     movq_r2r(mm5,mm2);\

  489.                     punpcklbw_r2r(mm7,mm1);\

  490.                     punpcklbw_r2r(mm7,mm2);\

  491.                     paddw_r2r(mm6,mm1);\

  492.                     paddw_r2r(mm2,mm1);\

  493.                     psraw_i2r(1,mm1);\

  494.                     packuswb_r2r(mm7,mm1);\

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

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

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

  498.                     movq_r2r(mm2,mm4);\

  499.                     punpcklbw_r2r(mm1,mm2);\

  500.                     punpckhbw_r2r(mm1,mm4);\

  501.                     movq_r2r(mm2,mm3);\

  502.                     punpcklbw_r2r(mm4,mm2);\

  503.                     punpckhbw_r2r(mm4,mm3);\

  504.                     movq_r2r(mm2,mm1);\

  505.                     movq_r2r(mm3,mm4);\

  506.                     punpcklbw_r2r(mm7,mm1);\

  507.                     punpcklbw_r2r(mm7,mm4);\

  508.                     paddw_r2r(mm6,mm1);\

  509.                     paddw_r2r(mm4,mm1);\

  510.                     psraw_i2r(1,mm1);\

  511.                     packuswb_r2r(mm7,mm1);\

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

  513.                     punpckhbw_r2r(mm7,mm0);\

  514.                     punpckhbw_r2r(mm7,mm2);\

  515.                     paddw_r2r(mm6,mm0);\

  516.                     paddw_r2r(mm2,mm0);\

  517.                     psraw_i2r(1,mm0);\

  518.                     packuswb_r2r(mm7,mm0);\

  519.                     punpckhbw_r2r(mm7,mm5);\

  520.                     punpckhbw_r2r(mm7,mm3);\

  521.                     paddw_r2r(mm6,mm5);\

  522.                     paddw_r2r(mm3,mm5);\

  523.                     psraw_i2r(1,mm5);\

  524.                     packuswb_r2r(mm7,mm5);\

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

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

  527. 

  528. #define LINE_NOUV_AVG \

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

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

  531.                     pand_r2r(mm5,mm0);\

  532.                     pand_r2r(mm5,mm1);\

  533.                     pmaddwd_r2r(mm6,mm0);\

  534.                     pmaddwd_r2r(mm6,mm1);\

  535.                     packssdw_r2r(mm1,mm0);\

  536.                     paddw_r2r(mm6,mm0);\

  537.                     psraw_i2r(1,mm0);\

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

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

  540.                     pand_r2r(mm5,mm2);\

  541.                     pand_r2r(mm5,mm3);\

  542.                     pmaddwd_r2r(mm6,mm2);\

  543.                     pmaddwd_r2r(mm6,mm3);\

  544.                     packssdw_r2r(mm3,mm2);\

  545.                     paddw_r2r(mm6,mm2);\

  546.                     psraw_i2r(1,mm2);\

  547.                     packuswb_r2r(mm2,mm0);\

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

  549. 

  550. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

  556.                     punpcklbw_r2r(mm7,mm0);\

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

  558.                     punpcklbw_r2r(mm7,mm1);\

  559.                     punpcklbw_r2r(mm7,mm2);\

  560.                     punpcklbw_r2r(mm7,mm3);\

  561.                     punpcklbw_r2r(mm7,mm4);\

  562.                     psllw_i2r(2,mm1);\

  563.                     psllw_i2r(1,mm2);\

  564.                     paddw_r2r(mm6,mm1);\

  565.                     psllw_i2r(2,mm3);\

  566.                     paddw_r2r(mm2,mm1);\

  567.                     paddw_r2r(mm4,mm0);\

  568.                     paddw_r2r(mm3,mm1);\

  569.                     psubusw_r2r(mm0,mm1);\

  570.                     psrlw_i2r(3,mm1);\

  571.                     packuswb_r2r(mm7,mm1);\

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

  573. 

  574. #else

  575. #include "libavcodec/dsputil.h"

  576. 

  577. #define LINE_WITH_UV \

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

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

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

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

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

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

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

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

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

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

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

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

  590. 

  591. #define LINE_NO_UV \

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

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

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

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

  596. 

  597. #define LINE_WITHUV_AVG \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  614. 

  615. #define LINE_NOUV_AVG \

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

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

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

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

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

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

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

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

  624. 

  625. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

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

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

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

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

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

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

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

  638. 

  639. #endif

  640. 

  641. 

  642. /* Read two fields separately. */

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

  644. {

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

  646.     int h;

  647. #ifndef HAVE_MMX

  648.     int sum;

  649. #endif

  650.     uint8_t* src = s->src_mem;

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

  652.     lum=data;

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

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

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

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

  657.             usleep(100);

  658.         }

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

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

  661.                 LINE_WITH_UV

  662.                     }

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

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

  665.                 LINE_NO_UV

  666.                     }

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

  668.         }

  669.         /*

  670.          * Do last two lines

  671.          */

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

  673.             LINE_WITH_UV

  674.                 }

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

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

  677.             LINE_NO_UV

  678.                 }

  679.         /* drop second field */

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

  681.             usleep(100);

  682.         }

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

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

  685.         }

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

  687. #ifdef HAVE_MMX

  688.         mmx_t rounder;

  689.         mmx_t masker;

  690.         rounder.uw[0]=1;

  691.         rounder.uw[1]=1;

  692.         rounder.uw[2]=1;

  693.         rounder.uw[3]=1;

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

  695.         masker.ub[1]=0;

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

  697.         masker.ub[3]=0;

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

  699.         masker.ub[5]=0;

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

  701.         masker.ub[7]=0;

  702.         pxor_r2r(mm7,mm7);

  703.         movq_m2r(rounder,mm6);

  704. #endif

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

  706.             usleep(100);

  707.         }

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

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

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

  711.                 LINE_WITHUV_AVG

  712.                     }

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

  714. #ifdef HAVE_MMX

  715.             movq_m2r(masker,mm5);

  716. #endif

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

  718.                 LINE_NOUV_AVG

  719.                     }

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

  721.         }

  722.         /*

  723.  * Do last two lines

  724.  */

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

  726.             LINE_WITHUV_AVG

  727.                 }

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

  729. #ifdef HAVE_MMX

  730.         movq_m2r(masker,mm5);

  731. #endif

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

  733.             LINE_NOUV_AVG

  734.                 }

  735.         /* drop second field */

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

  737.             usleep(100);

  738.         }

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

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

  741.         }

  742.     } else {

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

  744. #ifdef HAVE_MMX

  745.         mmx_t rounder;

  746.         rounder.uw[0]=4;

  747.         rounder.uw[1]=4;

  748.         rounder.uw[2]=4;

  749.         rounder.uw[3]=4;

  750.         movq_m2r(rounder,mm6);

  751.         pxor_r2r(mm7,mm7);

  752. #else

  753.         uint8_t *cm = cropTbl + MAX_NEG_CROP;

  754. #endif

  755. 

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

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

  758.             usleep(100);

  759.         }

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

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

  762.                 LINE_WITH_UV

  763.                     }

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

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

  766.             lum += s->width;

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

  768.                 LINE_WITH_UV

  769.                     }

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

  771.             lum += s->width;

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

  773.         }

  774.         /*

  775.  * Do last two lines

  776.  */

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

  778.             LINE_WITH_UV

  779.                 }

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

  781.         lum += s->width;

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

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

  784.             LINE_WITH_UV

  785.                 }

  786.         /*

  787.  *

  788.  * SECOND FIELD

  789.  *

  790.  */

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

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

  793.             usleep(10);

  794.         }

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

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

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

  798.                 LINE_NO_UV

  799.                     }

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

  801.             /* skip a luminance line */

  802.             lum += s->width;

  803.         }

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

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

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

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

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

  809.             lum_m4=s->lum_m4_mem;

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

  811.                 LINE_NO_UV

  812. 

  813.                     DEINT_LINE_LUM(0)

  814.                     DEINT_LINE_LUM(4)

  815.                     DEINT_LINE_LUM(8)

  816.                     DEINT_LINE_LUM(12)

  817.                     }

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

  819.             /* skip a luminance line */

  820.             lum += s->width;

  821.             lum_m1 += s->width;

  822.             lum_m2 += s->width;

  823.             lum_m3 += s->width;

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

  825.         }

  826.         /*

  827.  * Do last line

  828.  */

  829.         lum_m4=s->lum_m4_mem;

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

  831.             LINE_NO_UV

  832. 

  833.                 DEINT_LINE_LUM(0)

  834.                 DEINT_LINE_LUM(4)

  835.                 DEINT_LINE_LUM(8)

  836.                 DEINT_LINE_LUM(12)

  837.                 }

  838.     }

  839. #ifdef HAVE_MMX

  840.     emms();

  841. #endif

  842.     return s->frame_size;

  843. }

  844. 

  845. static int aiw_close(VideoData *s)

  846. {

  847.     av_freep(&s->lum_m4_mem);

  848.     av_freep(&s->src_mem);

  849.     return 0;

  850. }