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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 file is part of FFmpeg.

  6.  *

  7.  * FFmpeg is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * FFmpeg is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with FFmpeg; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. #include "avformat.h"

  22. #include <unistd.h>

  23. #include <fcntl.h>

  24. #include <sys/ioctl.h>

  25. #include <sys/mman.h>

  26. #include <sys/time.h>

  27. #define _LINUX_TIME_H 1

  28. #include <linux/videodev.h>

  29. #include <time.h>

  30. 

  31. typedef struct {

  32.     int fd;

  33.     int frame_format; /* see VIDEO_PALETTE_xxx */

  34.     int use_mmap;

  35.     int width, height;

  36.     int frame_rate;

  37.     int frame_rate_base;

  38.     int64_t time_frame;

  39.     int frame_size;

  40.     struct video_capability video_cap;

  41.     struct video_audio audio_saved;

  42.     uint8_t *video_buf;

  43.     struct video_mbuf gb_buffers;

  44.     struct video_mmap gb_buf;

  45.     int gb_frame;

  46. 

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

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

  49.     int aiw_enabled;

  50.     int deint;

  51.     int halfw;

  52.     uint8_t *src_mem;

  53.     uint8_t *lum_m4_mem;

  54. } VideoData;

  55. 

  56. static int aiw_init(VideoData *s);

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

  58. static int aiw_close(VideoData *s);

  59. 

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

  61. {

  62.     VideoData *s = s1->priv_data;

  63.     AVStream *st;

  64.     int width, height;

  65.     int video_fd, frame_size;

  66.     int ret, frame_rate, frame_rate_base;

  67.     int desired_palette, desired_depth;

  68.     struct video_tuner tuner;

  69.     struct video_audio audio;

  70.     struct video_picture pict;

  71.     const char *video_device;

  72.     int j;

  73. 

  74.     if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {

  75.         av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",

  76.             ap->width, ap->height, ap->time_base.den);

  77. 

  78.         return -1;

  79.     }

  80. 

  81.     width = ap->width;

  82.     height = ap->height;

  83.     frame_rate      = ap->time_base.den;

  84.     frame_rate_base = ap->time_base.num;

  85. 

  86.     if((unsigned)width > 32767 || (unsigned)height > 32767) {

  87.         av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",

  88.             width, height);

  89. 

  90.         return -1;

  91.     }

  92. 

  93.     st = av_new_stream(s1, 0);

  94.     if (!st)

  95.         return -ENOMEM;

  96.     av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */

  97. 

  98.     s->width = width;

  99.     s->height = height;

  100.     s->frame_rate      = frame_rate;

  101.     s->frame_rate_base = frame_rate_base;

  102. 

  103.     video_device = ap->device;

  104.     if (!video_device)

  105.         video_device = "/dev/video";

  106.     video_fd = open(video_device, O_RDWR);

  107.     if (video_fd < 0) {

  108.         perror(video_device);

  109.         goto fail;

  110.     }

  111. 

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

  113.         perror("VIDIOCGCAP");

  114.         goto fail;

  115.     }

  116. 

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

  118.         av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");

  119.         goto fail;

  120.     }

  121. 

  122.     desired_palette = -1;

  123.     desired_depth = -1;

  124.     if (ap->pix_fmt == PIX_FMT_YUV420P) {

  125.         desired_palette = VIDEO_PALETTE_YUV420P;

  126.         desired_depth = 12;

  127.     } else if (ap->pix_fmt == PIX_FMT_YUV422) {

  128.         desired_palette = VIDEO_PALETTE_YUV422;

  129.         desired_depth = 16;

  130.     } else if (ap->pix_fmt == PIX_FMT_BGR24) {

  131.         desired_palette = VIDEO_PALETTE_RGB24;

  132.         desired_depth = 24;

  133.     }

  134. 

  135.     /* set tv standard */

  136.     if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {

  137.         if (!strcasecmp(ap->standard, "pal"))

  138.             tuner.mode = VIDEO_MODE_PAL;

  139.         else if (!strcasecmp(ap->standard, "secam"))

  140.             tuner.mode = VIDEO_MODE_SECAM;

  141.         else

  142.             tuner.mode = VIDEO_MODE_NTSC;

  143.         ioctl(video_fd, VIDIOCSTUNER, &tuner);

  144.     }

  145. 

  146.     /* unmute audio */

  147.     audio.audio = 0;

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

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

  150.     audio.flags &= ~VIDEO_AUDIO_MUTE;

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

  152. 

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

  154. #if 0

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

  156.            pict.colour,

  157.            pict.hue,

  158.            pict.brightness,

  159.            pict.contrast,

  160.            pict.whiteness);

  161. #endif

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

  163.     pict.palette = desired_palette;

  164.     pict.depth= desired_depth;

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

  166.         pict.palette=VIDEO_PALETTE_YUV420P;

  167.         pict.depth=12;

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

  169.         if (ret < 0) {

  170.             pict.palette=VIDEO_PALETTE_YUV422;

  171.             pict.depth=16;

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

  173.             if (ret < 0) {

  174.                 pict.palette=VIDEO_PALETTE_RGB24;

  175.                 pict.depth=24;

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

  177.                 if (ret < 0)

  178.                     pict.palette=VIDEO_PALETTE_GREY;

  179.                     pict.depth=8;

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

  181.                     if (ret < 0)

  182.                         goto fail1;

  183.             }

  184.         }

  185.     }

  186. 

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

  188.     if (ret < 0) {

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

  190.         struct video_window win;

  191.         int val;

  192. 

  193.         win.x = 0;

  194.         win.y = 0;

  195.         win.width = width;

  196.         win.height = height;

  197.         win.chromakey = -1;

  198.         win.flags = 0;

  199. 

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

  201. 

  202.         s->frame_format = pict.palette;

  203. 

  204.         val = 1;

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

  206. 

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

  208.         s->use_mmap = 0;

  209. 

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

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

  212.             if (aiw_init(s) < 0)

  213.                 goto fail;

  214.             s->aiw_enabled = 1;

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

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

  217.             s->frame_format = VIDEO_PALETTE_YUV420P;

  218.         }

  219.     } else {

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

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

  222.             perror("mmap");

  223.             goto fail;

  224.         }

  225.         s->gb_frame = 0;

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

  227. 

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

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

  230.         s->gb_buf.height = height;

  231.         s->gb_buf.width = width;

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

  233. 

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

  235.         if (ret < 0) {

  236.             if (errno != EAGAIN) {

  237.             fail1:

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

  239.             } else {

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

  241.             }

  242.             goto fail;

  243.         }

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

  245.           s->gb_buf.frame = j;

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

  247.         }

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

  249.         s->use_mmap = 1;

  250.     }

  251. 

  252.     switch(s->frame_format) {

  253.     case VIDEO_PALETTE_YUV420P:

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

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

  256.         break;

  257.     case VIDEO_PALETTE_YUV422:

  258.         frame_size = width * height * 2;

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

  260.         break;

  261.     case VIDEO_PALETTE_RGB24:

  262.         frame_size = width * height * 3;

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

  264.         break;

  265.     case VIDEO_PALETTE_GREY:

  266.         frame_size = width * height * 1;

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

  268.         break;

  269.     default:

  270.         goto fail;

  271.     }

  272.     s->fd = video_fd;

  273.     s->frame_size = frame_size;

  274. 

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

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

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

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

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

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

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

  282. 

  283.     return 0;

  284.  fail:

  285.     if (video_fd >= 0)

  286.         close(video_fd);

  287.     av_free(st);

  288.     return AVERROR_IO;

  289. }

  290. 

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

  292. {

  293.     uint8_t *ptr;

  294. 

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

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

  297. 

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

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

  300. 

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

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

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

  304.         if (errno == EAGAIN)

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

  306.         else

  307.             perror("VIDIOCMCAPTURE");

  308.         return AVERROR_IO;

  309.     }

  310. 

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

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

  313. 

  314.     return s->frame_size;

  315. }

  316. 

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

  318. {

  319.     VideoData *s = s1->priv_data;

  320.     int64_t curtime, delay;

  321.     struct timespec ts;

  322. 

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

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

  325. 

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

  327.     for(;;) {

  328.         curtime = av_gettime();

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

  330.         if (delay <= 0) {

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

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

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

  334.             }

  335.             break;

  336.         }

  337.         ts.tv_sec = delay / 1000000;

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

  339.         nanosleep(&ts, NULL);

  340.     }

  341. 

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

  343.         return AVERROR_IO;

  344. 

  345.     pkt->pts = curtime;

  346. 

  347.     /* read one frame */

  348.     if (s->aiw_enabled) {

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

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

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

  352.     } else {

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

  354.             return AVERROR_IO;

  355.         return s->frame_size;

  356.     }

  357. }

  358. 

  359. static int grab_read_close(AVFormatContext *s1)

  360. {

  361.     VideoData *s = s1->priv_data;

  362. 

  363.     if (s->aiw_enabled)

  364.         aiw_close(s);

  365. 

  366.     if (s->use_mmap)

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

  368. 

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

  370.        return its state correctly */

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

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

  373. 

  374.     close(s->fd);

  375.     return 0;

  376. }

  377. 

  378. AVInputFormat video_grab_device_demuxer = {

  379.     "video4linux",

  380.     "video grab",

  381.     sizeof(VideoData),

  382.     NULL,

  383.     grab_read_header,

  384.     grab_read_packet,

  385.     grab_read_close,

  386.     .flags = AVFMT_NOFILE,

  387. };

  388. 

  389. /* All in Wonder specific stuff */

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

  391. 

  392. static int aiw_init(VideoData *s)

  393. {

  394.     int width, height;

  395. 

  396.     width = s->width;

  397.     height = s->height;

  398. 

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

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

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

  402. 

  403.         s->deint=0;

  404.         s->halfw=0;

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

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

  407.     } else {

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

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

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

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

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

  413.         goto fail;

  414.     }

  415. 

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

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

  418.     } else {

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

  420.     }

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

  422. 

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

  424.     if (!s->lum_m4_mem)

  425.         goto fail;

  426.     return 0;

  427.  fail:

  428.     av_freep(&s->src_mem);

  429.     av_freep(&s->lum_m4_mem);

  430.     return -1;

  431. }

  432. 

  433. #ifdef HAVE_MMX

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

  435. 

  436. #define LINE_WITH_UV \

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

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

  439.                     movq_r2r(mm0, mm4); \

  440.                     punpcklbw_r2r(mm1,mm0); \

  441.                     punpckhbw_r2r(mm1,mm4); \

  442.                     movq_r2r(mm0,mm5); \

  443.                     punpcklbw_r2r(mm4,mm0); \

  444.                     punpckhbw_r2r(mm4,mm5); \

  445.                     movq_r2r(mm0,mm1); \

  446.                     punpcklbw_r2r(mm5,mm1); \

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

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

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

  450.                     movq_r2r(mm2,mm4); \

  451.                     punpcklbw_r2r(mm1,mm2); \

  452.                     punpckhbw_r2r(mm1,mm4); \

  453.                     movq_r2r(mm2,mm3); \

  454.                     punpcklbw_r2r(mm4,mm2); \

  455.                     punpckhbw_r2r(mm4,mm3); \

  456.                     movq_r2r(mm2,mm1); \

  457.                     punpcklbw_r2r(mm3,mm1); \

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

  459.                     punpckhdq_r2r(mm2,mm0); \

  460.                     punpckhdq_r2r(mm3,mm5); \

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

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

  463. 

  464. #define LINE_NO_UV \

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

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

  467.                     movq_r2r(mm0, mm4);\

  468.                     punpcklbw_r2r(mm1,mm0); \

  469.                     punpckhbw_r2r(mm1,mm4);\

  470.                     movq_r2r(mm0,mm5);\

  471.                     punpcklbw_r2r(mm4,mm0);\

  472.                     punpckhbw_r2r(mm4,mm5);\

  473.                     movq_r2r(mm0,mm1);\

  474.                     punpcklbw_r2r(mm5,mm1);\

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

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

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

  478.                     movq_r2r(mm2,mm4);\

  479.                     punpcklbw_r2r(mm1,mm2);\

  480.                     punpckhbw_r2r(mm1,mm4);\

  481.                     movq_r2r(mm2,mm3);\

  482.                     punpcklbw_r2r(mm4,mm2);\

  483.                     punpckhbw_r2r(mm4,mm3);\

  484.                     movq_r2r(mm2,mm1);\

  485.                     punpcklbw_r2r(mm3,mm1);\

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

  487. 

  488. #define LINE_WITHUV_AVG \

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

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

  491.                     movq_r2r(mm0, mm4);\

  492.                     punpcklbw_r2r(mm1,mm0);\

  493.                     punpckhbw_r2r(mm1,mm4);\

  494.                     movq_r2r(mm0,mm5);\

  495.                     punpcklbw_r2r(mm4,mm0);\

  496.                     punpckhbw_r2r(mm4,mm5);\

  497.                     movq_r2r(mm0,mm1);\

  498.                     movq_r2r(mm5,mm2);\

  499.                     punpcklbw_r2r(mm7,mm1);\

  500.                     punpcklbw_r2r(mm7,mm2);\

  501.                     paddw_r2r(mm6,mm1);\

  502.                     paddw_r2r(mm2,mm1);\

  503.                     psraw_i2r(1,mm1);\

  504.                     packuswb_r2r(mm7,mm1);\

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

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

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

  508.                     movq_r2r(mm2,mm4);\

  509.                     punpcklbw_r2r(mm1,mm2);\

  510.                     punpckhbw_r2r(mm1,mm4);\

  511.                     movq_r2r(mm2,mm3);\

  512.                     punpcklbw_r2r(mm4,mm2);\

  513.                     punpckhbw_r2r(mm4,mm3);\

  514.                     movq_r2r(mm2,mm1);\

  515.                     movq_r2r(mm3,mm4);\

  516.                     punpcklbw_r2r(mm7,mm1);\

  517.                     punpcklbw_r2r(mm7,mm4);\

  518.                     paddw_r2r(mm6,mm1);\

  519.                     paddw_r2r(mm4,mm1);\

  520.                     psraw_i2r(1,mm1);\

  521.                     packuswb_r2r(mm7,mm1);\

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

  523.                     punpckhbw_r2r(mm7,mm0);\

  524.                     punpckhbw_r2r(mm7,mm2);\

  525.                     paddw_r2r(mm6,mm0);\

  526.                     paddw_r2r(mm2,mm0);\

  527.                     psraw_i2r(1,mm0);\

  528.                     packuswb_r2r(mm7,mm0);\

  529.                     punpckhbw_r2r(mm7,mm5);\

  530.                     punpckhbw_r2r(mm7,mm3);\

  531.                     paddw_r2r(mm6,mm5);\

  532.                     paddw_r2r(mm3,mm5);\

  533.                     psraw_i2r(1,mm5);\

  534.                     packuswb_r2r(mm7,mm5);\

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

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

  537. 

  538. #define LINE_NOUV_AVG \

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

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

  541.                     pand_r2r(mm5,mm0);\

  542.                     pand_r2r(mm5,mm1);\

  543.                     pmaddwd_r2r(mm6,mm0);\

  544.                     pmaddwd_r2r(mm6,mm1);\

  545.                     packssdw_r2r(mm1,mm0);\

  546.                     paddw_r2r(mm6,mm0);\

  547.                     psraw_i2r(1,mm0);\

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

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

  550.                     pand_r2r(mm5,mm2);\

  551.                     pand_r2r(mm5,mm3);\

  552.                     pmaddwd_r2r(mm6,mm2);\

  553.                     pmaddwd_r2r(mm6,mm3);\

  554.                     packssdw_r2r(mm3,mm2);\

  555.                     paddw_r2r(mm6,mm2);\

  556.                     psraw_i2r(1,mm2);\

  557.                     packuswb_r2r(mm2,mm0);\

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

  559. 

  560. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

  566.                     punpcklbw_r2r(mm7,mm0);\

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

  568.                     punpcklbw_r2r(mm7,mm1);\

  569.                     punpcklbw_r2r(mm7,mm2);\

  570.                     punpcklbw_r2r(mm7,mm3);\

  571.                     punpcklbw_r2r(mm7,mm4);\

  572.                     psllw_i2r(2,mm1);\

  573.                     psllw_i2r(1,mm2);\

  574.                     paddw_r2r(mm6,mm1);\

  575.                     psllw_i2r(2,mm3);\

  576.                     paddw_r2r(mm2,mm1);\

  577.                     paddw_r2r(mm4,mm0);\

  578.                     paddw_r2r(mm3,mm1);\

  579.                     psubusw_r2r(mm0,mm1);\

  580.                     psrlw_i2r(3,mm1);\

  581.                     packuswb_r2r(mm7,mm1);\

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

  583. 

  584. #else

  585. #include "libavcodec/dsputil.h"

  586. 

  587. #define LINE_WITH_UV \

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

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

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

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

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

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

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

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

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

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

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

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

  600. 

  601. #define LINE_NO_UV \

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

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

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

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

  606. 

  607. #define LINE_WITHUV_AVG \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  624. 

  625. #define LINE_NOUV_AVG \

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

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

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

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

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

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

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

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

  634. 

  635. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

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

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

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

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

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

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

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

  648. 

  649. #endif

  650. 

  651. 

  652. /* Read two fields separately. */

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

  654. {

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

  656.     int h;

  657. #ifndef HAVE_MMX

  658.     int sum;

  659. #endif

  660.     uint8_t* src = s->src_mem;

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

  662.     lum=data;

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

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

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

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

  667.             usleep(100);

  668.         }

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

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

  671.                 LINE_WITH_UV

  672.                     }

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

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

  675.                 LINE_NO_UV

  676.                     }

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

  678.         }

  679.         /*

  680.          * Do last two lines

  681.          */

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

  683.             LINE_WITH_UV

  684.                 }

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

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

  687.             LINE_NO_UV

  688.                 }

  689.         /* drop second field */

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

  691.             usleep(100);

  692.         }

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

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

  695.         }

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

  697. #ifdef HAVE_MMX

  698.         mmx_t rounder;

  699.         mmx_t masker;

  700.         rounder.uw[0]=1;

  701.         rounder.uw[1]=1;

  702.         rounder.uw[2]=1;

  703.         rounder.uw[3]=1;

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

  705.         masker.ub[1]=0;

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

  707.         masker.ub[3]=0;

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

  709.         masker.ub[5]=0;

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

  711.         masker.ub[7]=0;

  712.         pxor_r2r(mm7,mm7);

  713.         movq_m2r(rounder,mm6);

  714. #endif

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

  716.             usleep(100);

  717.         }

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

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

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

  721.                 LINE_WITHUV_AVG

  722.                     }

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

  724. #ifdef HAVE_MMX

  725.             movq_m2r(masker,mm5);

  726. #endif

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

  728.                 LINE_NOUV_AVG

  729.                     }

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

  731.         }

  732.         /*

  733.  * Do last two lines

  734.  */

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

  736.             LINE_WITHUV_AVG

  737.                 }

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

  739. #ifdef HAVE_MMX

  740.         movq_m2r(masker,mm5);

  741. #endif

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

  743.             LINE_NOUV_AVG

  744.                 }

  745.         /* drop second field */

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

  747.             usleep(100);

  748.         }

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

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

  751.         }

  752.     } else {

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

  754. #ifdef HAVE_MMX

  755.         mmx_t rounder;

  756.         rounder.uw[0]=4;

  757.         rounder.uw[1]=4;

  758.         rounder.uw[2]=4;

  759.         rounder.uw[3]=4;

  760.         movq_m2r(rounder,mm6);

  761.         pxor_r2r(mm7,mm7);

  762. #else

  763.         uint8_t *cm = cropTbl + MAX_NEG_CROP;

  764. #endif

  765. 

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

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

  768.             usleep(100);

  769.         }

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

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

  772.                 LINE_WITH_UV

  773.                     }

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

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

  776.             lum += s->width;

  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.         }

  784.         /*

  785.  * Do last two lines

  786.  */

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

  788.             LINE_WITH_UV

  789.                 }

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

  791.         lum += s->width;

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

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

  794.             LINE_WITH_UV

  795.                 }

  796.         /*

  797.  *

  798.  * SECOND FIELD

  799.  *

  800.  */

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

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

  803.             usleep(10);

  804.         }

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

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

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

  808.                 LINE_NO_UV

  809.                     }

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

  811.             /* skip a luminance line */

  812.             lum += s->width;

  813.         }

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

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

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

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

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

  819.             lum_m4=s->lum_m4_mem;

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

  821.                 LINE_NO_UV

  822. 

  823.                     DEINT_LINE_LUM(0)

  824.                     DEINT_LINE_LUM(4)

  825.                     DEINT_LINE_LUM(8)

  826.                     DEINT_LINE_LUM(12)

  827.                     }

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

  829.             /* skip a luminance line */

  830.             lum += s->width;

  831.             lum_m1 += s->width;

  832.             lum_m2 += s->width;

  833.             lum_m3 += s->width;

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

  835.         }

  836.         /*

  837.  * Do last line

  838.  */

  839.         lum_m4=s->lum_m4_mem;

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

  841.             LINE_NO_UV

  842. 

  843.                 DEINT_LINE_LUM(0)

  844.                 DEINT_LINE_LUM(4)

  845.                 DEINT_LINE_LUM(8)

  846.                 DEINT_LINE_LUM(12)

  847.                 }

  848.     }

  849. #ifdef HAVE_MMX

  850.     emms();

  851. #endif

  852.     return s->frame_size;

  853. }

  854. 

  855. static int aiw_close(VideoData *s)

  856. {

  857.     av_freep(&s->lum_m4_mem);

  858.     av_freep(&s->src_mem);

  859.     return 0;

  860. }