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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 "dsputil.h"

  23. #include <unistd.h>

  24. #include <fcntl.h>

  25. #include <sys/ioctl.h>

  26. #include <sys/mman.h>

  27. #include <sys/time.h>

  28. #define _LINUX_TIME_H 1

  29. #include <linux/videodev.h>

  30. #include <time.h>

  31. 

  32. typedef struct {

  33.     int fd;

  34.     int frame_format; /* see VIDEO_PALETTE_xxx */

  35.     int use_mmap;

  36.     int width, height;

  37.     int frame_rate;

  38.     int frame_rate_base;

  39.     int64_t time_frame;

  40.     int frame_size;

  41.     struct video_capability video_cap;

  42.     struct video_audio audio_saved;

  43.     uint8_t *video_buf;

  44.     struct video_mbuf gb_buffers;

  45.     struct video_mmap gb_buf;

  46.     int gb_frame;

  47. 

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

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

  50.     int aiw_enabled;

  51.     int deint;

  52.     int halfw;

  53.     uint8_t *src_mem;

  54.     uint8_t *lum_m4_mem;

  55. } VideoData;

  56. 

  57. struct {

  58.     int palette;

  59.     int depth;

  60.     enum PixelFormat pix_fmt;

  61. } video_formats [] = {

  62.     {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = PIX_FMT_YUV420P },

  63.     {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },

  64.     {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = PIX_FMT_UYVY422 },

  65.     {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },

  66.     /* NOTE: v4l uses BGR24, not RGB24 */

  67.     {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = PIX_FMT_BGR24   },

  68.     {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = PIX_FMT_BGR565  },

  69.     {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = PIX_FMT_GRAY8   },

  70. };

  71. 

  72. 

  73. static int aiw_init(VideoData *s);

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

  75. static int aiw_close(VideoData *s);

  76. 

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

  78. {

  79.     VideoData *s = s1->priv_data;

  80.     AVStream *st;

  81.     int width, height;

  82.     int video_fd, frame_size;

  83.     int ret, frame_rate, frame_rate_base;

  84.     int desired_palette, desired_depth;

  85.     struct video_tuner tuner;

  86.     struct video_audio audio;

  87.     struct video_picture pict;

  88.     int j;

  89.     int vformat_num = sizeof(video_formats) / sizeof(video_formats[0]);

  90. 

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

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

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

  94. 

  95.         return -1;

  96.     }

  97. 

  98.     width = ap->width;

  99.     height = ap->height;

  100.     frame_rate      = ap->time_base.den;

  101.     frame_rate_base = ap->time_base.num;

  102. 

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

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

  105.             width, height);

  106. 

  107.         return -1;

  108.     }

  109. 

  110.     st = av_new_stream(s1, 0);

  111.     if (!st)

  112.         return AVERROR(ENOMEM);

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

  114. 

  115.     s->width = width;

  116.     s->height = height;

  117.     s->frame_rate      = frame_rate;

  118.     s->frame_rate_base = frame_rate_base;

  119. 

  120.     video_fd = open(s1->filename, O_RDWR);

  121.     if (video_fd < 0) {

  122.         perror(s1->filename);

  123.         goto fail;

  124.     }

  125. 

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

  127.         perror("VIDIOCGCAP");

  128.         goto fail;

  129.     }

  130. 

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

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

  133.         goto fail;

  134.     }

  135. 

  136.     desired_palette = -1;

  137.     desired_depth = -1;

  138.     for (j = 0; j < vformat_num; j++) {

  139.         if (ap->pix_fmt == video_formats[j].pix_fmt) {

  140.             desired_palette = video_formats[j].palette;

  141.             desired_depth = video_formats[j].depth;

  142.             break;

  143.         }

  144.     }

  145. 

  146.     /* set tv standard */

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

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

  149.             tuner.mode = VIDEO_MODE_PAL;

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

  151.             tuner.mode = VIDEO_MODE_SECAM;

  152.         else

  153.             tuner.mode = VIDEO_MODE_NTSC;

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

  155.     }

  156. 

  157.     /* unmute audio */

  158.     audio.audio = 0;

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

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

  161.     audio.flags &= ~VIDEO_AUDIO_MUTE;

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

  163. 

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

  165. #if 0

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

  167.            pict.colour,

  168.            pict.hue,

  169.            pict.brightness,

  170.            pict.contrast,

  171.            pict.whiteness);

  172. #endif

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

  174.     pict.palette = desired_palette;

  175.     pict.depth= desired_depth;

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

  177.         for (j = 0; j < vformat_num; j++) {

  178.             pict.palette = video_formats[j].palette;

  179.             pict.depth = video_formats[j].depth;

  180.             if (-1 != ioctl(video_fd, VIDIOCSPICT, &pict))

  181.                 break;

  182.         }

  183.         if (j >= vformat_num)

  184.             goto fail1;

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

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

  224.                 perror("mmap");

  225.                 goto fail;

  226.             }

  227.         }

  228.         s->gb_frame = 0;

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

  230. 

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

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

  233.         s->gb_buf.height = height;

  234.         s->gb_buf.width = width;

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

  236. 

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

  238.         if (ret < 0) {

  239.             if (errno != EAGAIN) {

  240.             fail1:

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

  242.             } else {

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

  244.             }

  245.             goto fail;

  246.         }

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

  248.           s->gb_buf.frame = j;

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

  250.         }

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

  252.         s->use_mmap = 1;

  253.     }

  254. 

  255.     for (j = 0; j < vformat_num; j++) {

  256.         if (s->frame_format == video_formats[j].palette) {

  257.             frame_size = width * height * video_formats[j].depth / 8;

  258.             st->codec->pix_fmt = video_formats[j].pix_fmt;

  259.             break;

  260.         }

  261.     }

  262. 

  263.     if (j >= vformat_num)

  264.         goto fail;

  265. 

  266.     s->fd = video_fd;

  267.     s->frame_size = frame_size;

  268. 

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

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

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

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

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

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

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

  276. 

  277.     return 0;

  278.  fail:

  279.     if (video_fd >= 0)

  280.         close(video_fd);

  281.     av_free(st);

  282.     return AVERROR(EIO);

  283. }

  284. 

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

  286. {

  287.     uint8_t *ptr;

  288. 

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

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

  291. 

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

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

  294. 

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

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

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

  298.         if (errno == EAGAIN)

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

  300.         else

  301.             perror("VIDIOCMCAPTURE");

  302.         return AVERROR(EIO);

  303.     }

  304. 

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

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

  307. 

  308.     return s->frame_size;

  309. }

  310. 

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

  312. {

  313.     VideoData *s = s1->priv_data;

  314.     int64_t curtime, delay;

  315.     struct timespec ts;

  316. 

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

  318.     s->time_frame += INT64_C(1000000);

  319. 

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

  321.     for(;;) {

  322.         curtime = av_gettime();

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

  324.         if (delay <= 0) {

  325.             if (delay < INT64_C(-1000000) * s->frame_rate_base / s->frame_rate) {

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

  327.                 s->time_frame += INT64_C(1000000);

  328.             }

  329.             break;

  330.         }

  331.         ts.tv_sec = delay / 1000000;

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

  333.         nanosleep(&ts, NULL);

  334.     }

  335. 

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

  337.         return AVERROR(EIO);

  338. 

  339.     pkt->pts = curtime;

  340. 

  341.     /* read one frame */

  342.     if (s->aiw_enabled) {

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

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

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

  346.     } else {

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

  348.             return AVERROR(EIO);

  349.         return s->frame_size;

  350.     }

  351. }

  352. 

  353. static int grab_read_close(AVFormatContext *s1)

  354. {

  355.     VideoData *s = s1->priv_data;

  356. 

  357.     if (s->aiw_enabled)

  358.         aiw_close(s);

  359. 

  360.     if (s->use_mmap)

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

  362. 

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

  364.        return its state correctly */

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

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

  367. 

  368.     close(s->fd);

  369.     return 0;

  370. }

  371. 

  372. AVInputFormat video_grab_v4l_demuxer = {

  373.     "video4linux",

  374.     "video grab",

  375.     sizeof(VideoData),

  376.     NULL,

  377.     grab_read_header,

  378.     grab_read_packet,

  379.     grab_read_close,

  380.     .flags = AVFMT_NOFILE,

  381. };

  382. 

  383. /* All in Wonder specific stuff */

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

  385. 

  386. static int aiw_init(VideoData *s)

  387. {

  388.     int width, height;

  389. 

  390.     width = s->width;

  391.     height = s->height;

  392. 

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

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

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

  396. 

  397.         s->deint=0;

  398.         s->halfw=0;

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

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

  401.     } else {

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

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

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

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

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

  407.         goto fail;

  408.     }

  409. 

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

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

  412.     } else {

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

  414.     }

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

  416. 

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

  418.     if (!s->lum_m4_mem)

  419.         goto fail;

  420.     return 0;

  421.  fail:

  422.     av_freep(&s->src_mem);

  423.     av_freep(&s->lum_m4_mem);

  424.     return -1;

  425. }

  426. 

  427. #ifdef HAVE_MMX

  428. #include "i386/mmx.h"

  429. 

  430. #define LINE_WITH_UV \

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

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

  433.                     movq_r2r(mm0, mm4); \

  434.                     punpcklbw_r2r(mm1,mm0); \

  435.                     punpckhbw_r2r(mm1,mm4); \

  436.                     movq_r2r(mm0,mm5); \

  437.                     punpcklbw_r2r(mm4,mm0); \

  438.                     punpckhbw_r2r(mm4,mm5); \

  439.                     movq_r2r(mm0,mm1); \

  440.                     punpcklbw_r2r(mm5,mm1); \

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

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

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

  444.                     movq_r2r(mm2,mm4); \

  445.                     punpcklbw_r2r(mm1,mm2); \

  446.                     punpckhbw_r2r(mm1,mm4); \

  447.                     movq_r2r(mm2,mm3); \

  448.                     punpcklbw_r2r(mm4,mm2); \

  449.                     punpckhbw_r2r(mm4,mm3); \

  450.                     movq_r2r(mm2,mm1); \

  451.                     punpcklbw_r2r(mm3,mm1); \

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

  453.                     punpckhdq_r2r(mm2,mm0); \

  454.                     punpckhdq_r2r(mm3,mm5); \

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

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

  457. 

  458. #define LINE_NO_UV \

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

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

  461.                     movq_r2r(mm0, mm4);\

  462.                     punpcklbw_r2r(mm1,mm0); \

  463.                     punpckhbw_r2r(mm1,mm4);\

  464.                     movq_r2r(mm0,mm5);\

  465.                     punpcklbw_r2r(mm4,mm0);\

  466.                     punpckhbw_r2r(mm4,mm5);\

  467.                     movq_r2r(mm0,mm1);\

  468.                     punpcklbw_r2r(mm5,mm1);\

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

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

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

  472.                     movq_r2r(mm2,mm4);\

  473.                     punpcklbw_r2r(mm1,mm2);\

  474.                     punpckhbw_r2r(mm1,mm4);\

  475.                     movq_r2r(mm2,mm3);\

  476.                     punpcklbw_r2r(mm4,mm2);\

  477.                     punpckhbw_r2r(mm4,mm3);\

  478.                     movq_r2r(mm2,mm1);\

  479.                     punpcklbw_r2r(mm3,mm1);\

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

  481. 

  482. #define LINE_WITHUV_AVG \

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

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

  485.                     movq_r2r(mm0, mm4);\

  486.                     punpcklbw_r2r(mm1,mm0);\

  487.                     punpckhbw_r2r(mm1,mm4);\

  488.                     movq_r2r(mm0,mm5);\

  489.                     punpcklbw_r2r(mm4,mm0);\

  490.                     punpckhbw_r2r(mm4,mm5);\

  491.                     movq_r2r(mm0,mm1);\

  492.                     movq_r2r(mm5,mm2);\

  493.                     punpcklbw_r2r(mm7,mm1);\

  494.                     punpcklbw_r2r(mm7,mm2);\

  495.                     paddw_r2r(mm6,mm1);\

  496.                     paddw_r2r(mm2,mm1);\

  497.                     psraw_i2r(1,mm1);\

  498.                     packuswb_r2r(mm7,mm1);\

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

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

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

  502.                     movq_r2r(mm2,mm4);\

  503.                     punpcklbw_r2r(mm1,mm2);\

  504.                     punpckhbw_r2r(mm1,mm4);\

  505.                     movq_r2r(mm2,mm3);\

  506.                     punpcklbw_r2r(mm4,mm2);\

  507.                     punpckhbw_r2r(mm4,mm3);\

  508.                     movq_r2r(mm2,mm1);\

  509.                     movq_r2r(mm3,mm4);\

  510.                     punpcklbw_r2r(mm7,mm1);\

  511.                     punpcklbw_r2r(mm7,mm4);\

  512.                     paddw_r2r(mm6,mm1);\

  513.                     paddw_r2r(mm4,mm1);\

  514.                     psraw_i2r(1,mm1);\

  515.                     packuswb_r2r(mm7,mm1);\

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

  517.                     punpckhbw_r2r(mm7,mm0);\

  518.                     punpckhbw_r2r(mm7,mm2);\

  519.                     paddw_r2r(mm6,mm0);\

  520.                     paddw_r2r(mm2,mm0);\

  521.                     psraw_i2r(1,mm0);\

  522.                     packuswb_r2r(mm7,mm0);\

  523.                     punpckhbw_r2r(mm7,mm5);\

  524.                     punpckhbw_r2r(mm7,mm3);\

  525.                     paddw_r2r(mm6,mm5);\

  526.                     paddw_r2r(mm3,mm5);\

  527.                     psraw_i2r(1,mm5);\

  528.                     packuswb_r2r(mm7,mm5);\

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

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

  531. 

  532. #define LINE_NOUV_AVG \

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

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

  535.                     pand_r2r(mm5,mm0);\

  536.                     pand_r2r(mm5,mm1);\

  537.                     pmaddwd_r2r(mm6,mm0);\

  538.                     pmaddwd_r2r(mm6,mm1);\

  539.                     packssdw_r2r(mm1,mm0);\

  540.                     paddw_r2r(mm6,mm0);\

  541.                     psraw_i2r(1,mm0);\

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

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

  544.                     pand_r2r(mm5,mm2);\

  545.                     pand_r2r(mm5,mm3);\

  546.                     pmaddwd_r2r(mm6,mm2);\

  547.                     pmaddwd_r2r(mm6,mm3);\

  548.                     packssdw_r2r(mm3,mm2);\

  549.                     paddw_r2r(mm6,mm2);\

  550.                     psraw_i2r(1,mm2);\

  551.                     packuswb_r2r(mm2,mm0);\

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

  553. 

  554. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

  560.                     punpcklbw_r2r(mm7,mm0);\

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

  562.                     punpcklbw_r2r(mm7,mm1);\

  563.                     punpcklbw_r2r(mm7,mm2);\

  564.                     punpcklbw_r2r(mm7,mm3);\

  565.                     punpcklbw_r2r(mm7,mm4);\

  566.                     psllw_i2r(2,mm1);\

  567.                     psllw_i2r(1,mm2);\

  568.                     paddw_r2r(mm6,mm1);\

  569.                     psllw_i2r(2,mm3);\

  570.                     paddw_r2r(mm2,mm1);\

  571.                     paddw_r2r(mm4,mm0);\

  572.                     paddw_r2r(mm3,mm1);\

  573.                     psubusw_r2r(mm0,mm1);\

  574.                     psrlw_i2r(3,mm1);\

  575.                     packuswb_r2r(mm7,mm1);\

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

  577. 

  578. #else

  579. #include "dsputil.h"

  580. 

  581. #define LINE_WITH_UV \

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

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

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

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

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

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

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

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

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

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

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

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

  594. 

  595. #define LINE_NO_UV \

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

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

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

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

  600. 

  601. #define LINE_WITHUV_AVG \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  618. 

  619. #define LINE_NOUV_AVG \

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

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

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

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

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

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

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

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

  628. 

  629. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

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

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

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

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

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

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

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

  642. 

  643. #endif

  644. 

  645. 

  646. /* Read two fields separately. */

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

  648. {

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

  650.     int h;

  651. #ifndef HAVE_MMX

  652.     int sum;

  653. #endif

  654.     uint8_t* src = s->src_mem;

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

  656.     lum=data;

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

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

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

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

  661.             usleep(100);

  662.         }

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

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

  665.                 LINE_WITH_UV

  666.                     }

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

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

  669.                 LINE_NO_UV

  670.                     }

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

  672.         }

  673.         /*

  674.          * Do last two lines

  675.          */

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

  677.             LINE_WITH_UV

  678.                 }

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

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

  681.             LINE_NO_UV

  682.                 }

  683.         /* drop second field */

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

  685.             usleep(100);

  686.         }

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

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

  689.         }

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

  691. #ifdef HAVE_MMX

  692.         mmx_t rounder;

  693.         mmx_t masker;

  694.         rounder.uw[0]=1;

  695.         rounder.uw[1]=1;

  696.         rounder.uw[2]=1;

  697.         rounder.uw[3]=1;

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

  699.         masker.ub[1]=0;

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

  701.         masker.ub[3]=0;

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

  703.         masker.ub[5]=0;

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

  705.         masker.ub[7]=0;

  706.         pxor_r2r(mm7,mm7);

  707.         movq_m2r(rounder,mm6);

  708. #endif

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

  710.             usleep(100);

  711.         }

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

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

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

  715.                 LINE_WITHUV_AVG

  716.                     }

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

  718. #ifdef HAVE_MMX

  719.             movq_m2r(masker,mm5);

  720. #endif

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

  722.                 LINE_NOUV_AVG

  723.                     }

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

  725.         }

  726.         /*

  727.  * Do last two lines

  728.  */

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

  730.             LINE_WITHUV_AVG

  731.                 }

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

  733. #ifdef HAVE_MMX

  734.         movq_m2r(masker,mm5);

  735. #endif

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

  737.             LINE_NOUV_AVG

  738.                 }

  739.         /* drop second field */

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

  741.             usleep(100);

  742.         }

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

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

  745.         }

  746.     } else {

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

  748. #ifdef HAVE_MMX

  749.         mmx_t rounder;

  750.         rounder.uw[0]=4;

  751.         rounder.uw[1]=4;

  752.         rounder.uw[2]=4;

  753.         rounder.uw[3]=4;

  754.         movq_m2r(rounder,mm6);

  755.         pxor_r2r(mm7,mm7);

  756. #else

  757.         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

  758. #endif

  759. 

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

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

  762.             usleep(100);

  763.         }

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

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

  766.                 LINE_WITH_UV

  767.                     }

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

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

  770.             lum += s->width;

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

  772.                 LINE_WITH_UV

  773.                     }

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

  775.             lum += s->width;

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

  777.         }

  778.         /*

  779.  * Do last two lines

  780.  */

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

  782.             LINE_WITH_UV

  783.                 }

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

  785.         lum += s->width;

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

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

  788.             LINE_WITH_UV

  789.                 }

  790.         /*

  791.  *

  792.  * SECOND FIELD

  793.  *

  794.  */

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

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

  797.             usleep(10);

  798.         }

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

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

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

  802.                 LINE_NO_UV

  803.                     }

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

  805.             /* skip a luminance line */

  806.             lum += s->width;

  807.         }

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

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

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

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

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

  813.             lum_m4=s->lum_m4_mem;

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

  815.                 LINE_NO_UV

  816. 

  817.                     DEINT_LINE_LUM(0)

  818.                     DEINT_LINE_LUM(4)

  819.                     DEINT_LINE_LUM(8)

  820.                     DEINT_LINE_LUM(12)

  821.                     }

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

  823.             /* skip a luminance line */

  824.             lum += s->width;

  825.             lum_m1 += s->width;

  826.             lum_m2 += s->width;

  827.             lum_m3 += s->width;

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

  829.         }

  830.         /*

  831.  * Do last line

  832.  */

  833.         lum_m4=s->lum_m4_mem;

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

  835.             LINE_NO_UV

  836. 

  837.                 DEINT_LINE_LUM(0)

  838.                 DEINT_LINE_LUM(4)

  839.                 DEINT_LINE_LUM(8)

  840.                 DEINT_LINE_LUM(12)

  841.                 }

  842.     }

  843.     emms_c();

  844.     return s->frame_size;

  845. }

  846. 

  847. static int aiw_close(VideoData *s)

  848. {

  849.     av_freep(&s->lum_m4_mem);

  850.     av_freep(&s->src_mem);

  851.     return 0;

  852. }