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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. struct {

  57.     int palette;

  58.     int depth;

  59.     enum PixelFormat pix_fmt;

  60. } video_formats [] = {

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

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

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

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

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

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

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

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

  69. };

  70. 

  71. 

  72. static int aiw_init(VideoData *s);

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

  74. static int aiw_close(VideoData *s);

  75. 

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

  77. {

  78.     VideoData *s = s1->priv_data;

  79.     AVStream *st;

  80.     int width, height;

  81.     int video_fd, frame_size;

  82.     int ret, frame_rate, frame_rate_base;

  83.     int desired_palette, desired_depth;

  84.     struct video_tuner tuner;

  85.     struct video_audio audio;

  86.     struct video_picture pict;

  87.     int j;

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

  89. 

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

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

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

  93. 

  94.         return -1;

  95.     }

  96. 

  97.     width = ap->width;

  98.     height = ap->height;

  99.     frame_rate      = ap->time_base.den;

  100.     frame_rate_base = ap->time_base.num;

  101. 

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

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

  104.             width, height);

  105. 

  106.         return -1;

  107.     }

  108. 

  109.     st = av_new_stream(s1, 0);

  110.     if (!st)

  111.         return AVERROR(ENOMEM);

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

  113. 

  114.     s->width = width;

  115.     s->height = height;

  116.     s->frame_rate      = frame_rate;

  117.     s->frame_rate_base = frame_rate_base;

  118. 

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

  120.     if (video_fd < 0) {

  121.         perror(s1->filename);

  122.         goto fail;

  123.     }

  124. 

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

  126.         perror("VIDIOCGCAP");

  127.         goto fail;

  128.     }

  129. 

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

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

  132.         goto fail;

  133.     }

  134. 

  135.     desired_palette = -1;

  136.     desired_depth = -1;

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

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

  139.             desired_palette = video_formats[j].palette;

  140.             desired_depth = video_formats[j].depth;

  141.             break;

  142.         }

  143.     }

  144. 

  145.     /* set tv standard */

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

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

  148.             tuner.mode = VIDEO_MODE_PAL;

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

  150.             tuner.mode = VIDEO_MODE_SECAM;

  151.         else

  152.             tuner.mode = VIDEO_MODE_NTSC;

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

  154.     }

  155. 

  156.     /* unmute audio */

  157.     audio.audio = 0;

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

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

  160.     audio.flags &= ~VIDEO_AUDIO_MUTE;

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

  162. 

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

  164. #if 0

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

  166.            pict.colour,

  167.            pict.hue,

  168.            pict.brightness,

  169.            pict.contrast,

  170.            pict.whiteness);

  171. #endif

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

  173.     pict.palette = desired_palette;

  174.     pict.depth= desired_depth;

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

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

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

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

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

  180.                 break;

  181.         }

  182.         if (j >= vformat_num)

  183.             goto fail1;

  184.     }

  185. 

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

  187.     if (ret < 0) {

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

  189.         struct video_window win;

  190.         int val;

  191. 

  192.         win.x = 0;

  193.         win.y = 0;

  194.         win.width = width;

  195.         win.height = height;

  196.         win.chromakey = -1;

  197.         win.flags = 0;

  198. 

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

  200. 

  201.         s->frame_format = pict.palette;

  202. 

  203.         val = 1;

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

  205. 

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

  207.         s->use_mmap = 0;

  208. 

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

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

  211.             if (aiw_init(s) < 0)

  212.                 goto fail;

  213.             s->aiw_enabled = 1;

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

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

  216.             s->frame_format = VIDEO_PALETTE_YUV420P;

  217.         }

  218.     } else {

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

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

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

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

  223.                 perror("mmap");

  224.                 goto fail;

  225.             }

  226.         }

  227.         s->gb_frame = 0;

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

  229. 

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

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

  232.         s->gb_buf.height = height;

  233.         s->gb_buf.width = width;

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

  235. 

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

  237.         if (ret < 0) {

  238.             if (errno != EAGAIN) {

  239.             fail1:

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

  241.             } else {

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

  243.             }

  244.             goto fail;

  245.         }

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

  247.           s->gb_buf.frame = j;

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

  249.         }

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

  251.         s->use_mmap = 1;

  252.     }

  253. 

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

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

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

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

  258.             break;

  259.         }

  260.     }

  261. 

  262.     if (j >= vformat_num)

  263.         goto fail;

  264. 

  265.     s->fd = video_fd;

  266.     s->frame_size = frame_size;

  267. 

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

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

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

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

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

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

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

  275. 

  276.     return 0;

  277.  fail:

  278.     if (video_fd >= 0)

  279.         close(video_fd);

  280.     av_free(st);

  281.     return AVERROR_IO;

  282. }

  283. 

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

  285. {

  286.     uint8_t *ptr;

  287. 

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

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

  290. 

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

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

  293. 

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

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

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

  297.         if (errno == EAGAIN)

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

  299.         else

  300.             perror("VIDIOCMCAPTURE");

  301.         return AVERROR_IO;

  302.     }

  303. 

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

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

  306. 

  307.     return s->frame_size;

  308. }

  309. 

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

  311. {

  312.     VideoData *s = s1->priv_data;

  313.     int64_t curtime, delay;

  314.     struct timespec ts;

  315. 

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

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

  318. 

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

  320.     for(;;) {

  321.         curtime = av_gettime();

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

  323.         if (delay <= 0) {

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

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

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

  327.             }

  328.             break;

  329.         }

  330.         ts.tv_sec = delay / 1000000;

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

  332.         nanosleep(&ts, NULL);

  333.     }

  334. 

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

  336.         return AVERROR_IO;

  337. 

  338.     pkt->pts = curtime;

  339. 

  340.     /* read one frame */

  341.     if (s->aiw_enabled) {

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

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

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

  345.     } else {

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

  347.             return AVERROR_IO;

  348.         return s->frame_size;

  349.     }

  350. }

  351. 

  352. static int grab_read_close(AVFormatContext *s1)

  353. {

  354.     VideoData *s = s1->priv_data;

  355. 

  356.     if (s->aiw_enabled)

  357.         aiw_close(s);

  358. 

  359.     if (s->use_mmap)

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

  361. 

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

  363.        return its state correctly */

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

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

  366. 

  367.     close(s->fd);

  368.     return 0;

  369. }

  370. 

  371. AVInputFormat video_grab_v4l_demuxer = {

  372.     "video4linux",

  373.     "video grab",

  374.     sizeof(VideoData),

  375.     NULL,

  376.     grab_read_header,

  377.     grab_read_packet,

  378.     grab_read_close,

  379.     .flags = AVFMT_NOFILE,

  380. };

  381. 

  382. /* All in Wonder specific stuff */

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

  384. 

  385. static int aiw_init(VideoData *s)

  386. {

  387.     int width, height;

  388. 

  389.     width = s->width;

  390.     height = s->height;

  391. 

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

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

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

  395. 

  396.         s->deint=0;

  397.         s->halfw=0;

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

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

  400.     } else {

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

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

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

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

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

  406.         goto fail;

  407.     }

  408. 

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

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

  411.     } else {

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

  413.     }

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

  415. 

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

  417.     if (!s->lum_m4_mem)

  418.         goto fail;

  419.     return 0;

  420.  fail:

  421.     av_freep(&s->src_mem);

  422.     av_freep(&s->lum_m4_mem);

  423.     return -1;

  424. }

  425. 

  426. #ifdef HAVE_MMX

  427. #include "i386/mmx.h"

  428. 

  429. #define LINE_WITH_UV \

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

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

  432.                     movq_r2r(mm0, mm4); \

  433.                     punpcklbw_r2r(mm1,mm0); \

  434.                     punpckhbw_r2r(mm1,mm4); \

  435.                     movq_r2r(mm0,mm5); \

  436.                     punpcklbw_r2r(mm4,mm0); \

  437.                     punpckhbw_r2r(mm4,mm5); \

  438.                     movq_r2r(mm0,mm1); \

  439.                     punpcklbw_r2r(mm5,mm1); \

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

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

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

  443.                     movq_r2r(mm2,mm4); \

  444.                     punpcklbw_r2r(mm1,mm2); \

  445.                     punpckhbw_r2r(mm1,mm4); \

  446.                     movq_r2r(mm2,mm3); \

  447.                     punpcklbw_r2r(mm4,mm2); \

  448.                     punpckhbw_r2r(mm4,mm3); \

  449.                     movq_r2r(mm2,mm1); \

  450.                     punpcklbw_r2r(mm3,mm1); \

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

  452.                     punpckhdq_r2r(mm2,mm0); \

  453.                     punpckhdq_r2r(mm3,mm5); \

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

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

  456. 

  457. #define LINE_NO_UV \

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

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

  460.                     movq_r2r(mm0, mm4);\

  461.                     punpcklbw_r2r(mm1,mm0); \

  462.                     punpckhbw_r2r(mm1,mm4);\

  463.                     movq_r2r(mm0,mm5);\

  464.                     punpcklbw_r2r(mm4,mm0);\

  465.                     punpckhbw_r2r(mm4,mm5);\

  466.                     movq_r2r(mm0,mm1);\

  467.                     punpcklbw_r2r(mm5,mm1);\

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

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

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

  471.                     movq_r2r(mm2,mm4);\

  472.                     punpcklbw_r2r(mm1,mm2);\

  473.                     punpckhbw_r2r(mm1,mm4);\

  474.                     movq_r2r(mm2,mm3);\

  475.                     punpcklbw_r2r(mm4,mm2);\

  476.                     punpckhbw_r2r(mm4,mm3);\

  477.                     movq_r2r(mm2,mm1);\

  478.                     punpcklbw_r2r(mm3,mm1);\

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

  480. 

  481. #define LINE_WITHUV_AVG \

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

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

  484.                     movq_r2r(mm0, mm4);\

  485.                     punpcklbw_r2r(mm1,mm0);\

  486.                     punpckhbw_r2r(mm1,mm4);\

  487.                     movq_r2r(mm0,mm5);\

  488.                     punpcklbw_r2r(mm4,mm0);\

  489.                     punpckhbw_r2r(mm4,mm5);\

  490.                     movq_r2r(mm0,mm1);\

  491.                     movq_r2r(mm5,mm2);\

  492.                     punpcklbw_r2r(mm7,mm1);\

  493.                     punpcklbw_r2r(mm7,mm2);\

  494.                     paddw_r2r(mm6,mm1);\

  495.                     paddw_r2r(mm2,mm1);\

  496.                     psraw_i2r(1,mm1);\

  497.                     packuswb_r2r(mm7,mm1);\

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

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

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

  501.                     movq_r2r(mm2,mm4);\

  502.                     punpcklbw_r2r(mm1,mm2);\

  503.                     punpckhbw_r2r(mm1,mm4);\

  504.                     movq_r2r(mm2,mm3);\

  505.                     punpcklbw_r2r(mm4,mm2);\

  506.                     punpckhbw_r2r(mm4,mm3);\

  507.                     movq_r2r(mm2,mm1);\

  508.                     movq_r2r(mm3,mm4);\

  509.                     punpcklbw_r2r(mm7,mm1);\

  510.                     punpcklbw_r2r(mm7,mm4);\

  511.                     paddw_r2r(mm6,mm1);\

  512.                     paddw_r2r(mm4,mm1);\

  513.                     psraw_i2r(1,mm1);\

  514.                     packuswb_r2r(mm7,mm1);\

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

  516.                     punpckhbw_r2r(mm7,mm0);\

  517.                     punpckhbw_r2r(mm7,mm2);\

  518.                     paddw_r2r(mm6,mm0);\

  519.                     paddw_r2r(mm2,mm0);\

  520.                     psraw_i2r(1,mm0);\

  521.                     packuswb_r2r(mm7,mm0);\

  522.                     punpckhbw_r2r(mm7,mm5);\

  523.                     punpckhbw_r2r(mm7,mm3);\

  524.                     paddw_r2r(mm6,mm5);\

  525.                     paddw_r2r(mm3,mm5);\

  526.                     psraw_i2r(1,mm5);\

  527.                     packuswb_r2r(mm7,mm5);\

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

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

  530. 

  531. #define LINE_NOUV_AVG \

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

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

  534.                     pand_r2r(mm5,mm0);\

  535.                     pand_r2r(mm5,mm1);\

  536.                     pmaddwd_r2r(mm6,mm0);\

  537.                     pmaddwd_r2r(mm6,mm1);\

  538.                     packssdw_r2r(mm1,mm0);\

  539.                     paddw_r2r(mm6,mm0);\

  540.                     psraw_i2r(1,mm0);\

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

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

  543.                     pand_r2r(mm5,mm2);\

  544.                     pand_r2r(mm5,mm3);\

  545.                     pmaddwd_r2r(mm6,mm2);\

  546.                     pmaddwd_r2r(mm6,mm3);\

  547.                     packssdw_r2r(mm3,mm2);\

  548.                     paddw_r2r(mm6,mm2);\

  549.                     psraw_i2r(1,mm2);\

  550.                     packuswb_r2r(mm2,mm0);\

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

  552. 

  553. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

  559.                     punpcklbw_r2r(mm7,mm0);\

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

  561.                     punpcklbw_r2r(mm7,mm1);\

  562.                     punpcklbw_r2r(mm7,mm2);\

  563.                     punpcklbw_r2r(mm7,mm3);\

  564.                     punpcklbw_r2r(mm7,mm4);\

  565.                     psllw_i2r(2,mm1);\

  566.                     psllw_i2r(1,mm2);\

  567.                     paddw_r2r(mm6,mm1);\

  568.                     psllw_i2r(2,mm3);\

  569.                     paddw_r2r(mm2,mm1);\

  570.                     paddw_r2r(mm4,mm0);\

  571.                     paddw_r2r(mm3,mm1);\

  572.                     psubusw_r2r(mm0,mm1);\

  573.                     psrlw_i2r(3,mm1);\

  574.                     packuswb_r2r(mm7,mm1);\

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

  576. 

  577. #else

  578. #include "dsputil.h"

  579. 

  580. #define LINE_WITH_UV \

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

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

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

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

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

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

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

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

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

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

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

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

  593. 

  594. #define LINE_NO_UV \

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

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

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

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

  599. 

  600. #define LINE_WITHUV_AVG \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  617. 

  618. #define LINE_NOUV_AVG \

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

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

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

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

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

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

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

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

  627. 

  628. #define DEINT_LINE_LUM(ptroff) \

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

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

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

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

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

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

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

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

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

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

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

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

  641. 

  642. #endif

  643. 

  644. 

  645. /* Read two fields separately. */

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

  647. {

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

  649.     int h;

  650. #ifndef HAVE_MMX

  651.     int sum;

  652. #endif

  653.     uint8_t* src = s->src_mem;

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

  655.     lum=data;

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

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

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

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

  660.             usleep(100);

  661.         }

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

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

  664.                 LINE_WITH_UV

  665.                     }

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

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

  668.                 LINE_NO_UV

  669.                     }

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

  671.         }

  672.         /*

  673.          * Do last two lines

  674.          */

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

  676.             LINE_WITH_UV

  677.                 }

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

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

  680.             LINE_NO_UV

  681.                 }

  682.         /* drop second field */

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

  684.             usleep(100);

  685.         }

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

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

  688.         }

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

  690. #ifdef HAVE_MMX

  691.         mmx_t rounder;

  692.         mmx_t masker;

  693.         rounder.uw[0]=1;

  694.         rounder.uw[1]=1;

  695.         rounder.uw[2]=1;

  696.         rounder.uw[3]=1;

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

  698.         masker.ub[1]=0;

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

  700.         masker.ub[3]=0;

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

  702.         masker.ub[5]=0;

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

  704.         masker.ub[7]=0;

  705.         pxor_r2r(mm7,mm7);

  706.         movq_m2r(rounder,mm6);

  707. #endif

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

  709.             usleep(100);

  710.         }

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

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

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

  714.                 LINE_WITHUV_AVG

  715.                     }

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

  717. #ifdef HAVE_MMX

  718.             movq_m2r(masker,mm5);

  719. #endif

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

  721.                 LINE_NOUV_AVG

  722.                     }

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

  724.         }

  725.         /*

  726.  * Do last two lines

  727.  */

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

  729.             LINE_WITHUV_AVG

  730.                 }

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

  732. #ifdef HAVE_MMX

  733.         movq_m2r(masker,mm5);

  734. #endif

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

  736.             LINE_NOUV_AVG

  737.                 }

  738.         /* drop second field */

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

  740.             usleep(100);

  741.         }

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

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

  744.         }

  745.     } else {

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

  747. #ifdef HAVE_MMX

  748.         mmx_t rounder;

  749.         rounder.uw[0]=4;

  750.         rounder.uw[1]=4;

  751.         rounder.uw[2]=4;

  752.         rounder.uw[3]=4;

  753.         movq_m2r(rounder,mm6);

  754.         pxor_r2r(mm7,mm7);

  755. #else

  756.         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

  757. #endif

  758. 

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

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

  761.             usleep(100);

  762.         }

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

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

  765.                 LINE_WITH_UV

  766.                     }

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

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

  769.             lum += s->width;

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

  771.                 LINE_WITH_UV

  772.                     }

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

  774.             lum += s->width;

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

  776.         }

  777.         /*

  778.  * Do last two lines

  779.  */

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

  781.             LINE_WITH_UV

  782.                 }

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

  784.         lum += s->width;

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

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

  787.             LINE_WITH_UV

  788.                 }

  789.         /*

  790.  *

  791.  * SECOND FIELD

  792.  *

  793.  */

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

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

  796.             usleep(10);

  797.         }

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

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

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

  801.                 LINE_NO_UV

  802.                     }

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

  804.             /* skip a luminance line */

  805.             lum += s->width;

  806.         }

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

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

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

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

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

  812.             lum_m4=s->lum_m4_mem;

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

  814.                 LINE_NO_UV

  815. 

  816.                     DEINT_LINE_LUM(0)

  817.                     DEINT_LINE_LUM(4)

  818.                     DEINT_LINE_LUM(8)

  819.                     DEINT_LINE_LUM(12)

  820.                     }

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

  822.             /* skip a luminance line */

  823.             lum += s->width;

  824.             lum_m1 += s->width;

  825.             lum_m2 += s->width;

  826.             lum_m3 += s->width;

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

  828.         }

  829.         /*

  830.  * Do last line

  831.  */

  832.         lum_m4=s->lum_m4_mem;

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

  834.             LINE_NO_UV

  835. 

  836.                 DEINT_LINE_LUM(0)

  837.                 DEINT_LINE_LUM(4)

  838.                 DEINT_LINE_LUM(8)

  839.                 DEINT_LINE_LUM(12)

  840.                 }

  841.     }

  842. #ifdef HAVE_MMX

  843.     emms();

  844. #endif

  845.     return s->frame_size;

  846. }

  847. 

  848. static int aiw_close(VideoData *s)

  849. {

  850.     av_freep(&s->lum_m4_mem);

  851.     av_freep(&s->src_mem);

  852.     return 0;

  853. }