MythTV: v4l.c Source File

00001 /*
00002  * Linux video grab interface
00003  * Copyright (c) 2000,2001 Fabrice Bellard.
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 #include "avformat.h"
00022 #include "dsputil.h"
00023 #include <unistd.h>
00024 #include <fcntl.h>
00025 #include <sys/ioctl.h>
00026 #include <sys/mman.h>
00027 #include <sys/time.h>
00028 #define _LINUX_TIME_H 1
00029 #include <linux/videodev.h>
00030 #include <time.h>
00031 
00032 typedef struct {
00033     int fd;
00034     int frame_format; /* see VIDEO_PALETTE_xxx */
00035     int use_mmap;
00036     int width, height;
00037     int frame_rate;
00038     int frame_rate_base;
00039     int64_t time_frame;
00040     int frame_size;
00041     struct video_capability video_cap;
00042     struct video_audio audio_saved;
00043     uint8_t *video_buf;
00044     struct video_mbuf gb_buffers;
00045     struct video_mmap gb_buf;
00046     int gb_frame;
00047 
00048     /* ATI All In Wonder specific stuff */
00049     /* XXX: remove and merge in libavcodec/imgconvert.c */
00050     int aiw_enabled;
00051     int deint;
00052     int halfw;
00053     uint8_t *src_mem;
00054     uint8_t *lum_m4_mem;
00055 } VideoData;
00056 
00057 struct {
00058     int palette;
00059     int depth;
00060     enum PixelFormat pix_fmt;
00061 } video_formats [] = {
00062     {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = PIX_FMT_YUV420P },
00063     {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
00064     {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = PIX_FMT_UYVY422 },
00065     {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
00066     /* NOTE: v4l uses BGR24, not RGB24 */
00067     {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = PIX_FMT_BGR24   },
00068     {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = PIX_FMT_BGR565  },
00069     {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = PIX_FMT_GRAY8   },
00070 };
00071 
00072 
00073 static int aiw_init(VideoData *s);
00074 static int aiw_read_picture(VideoData *s, uint8_t *data);
00075 static int aiw_close(VideoData *s);
00076 
00077 static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
00078 {
00079     VideoData *s = s1->priv_data;
00080     AVStream *st;
00081     int width, height;
00082     int video_fd, frame_size;
00083     int ret, frame_rate, frame_rate_base;
00084     int desired_palette, desired_depth;
00085     struct video_tuner tuner;
00086     struct video_audio audio;
00087     struct video_picture pict;
00088     int j;
00089     int vformat_num = sizeof(video_formats) / sizeof(video_formats[0]);
00090 
00091     if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
00092         av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
00093             ap->width, ap->height, ap->time_base.den);
00094 
00095         return -1;
00096     }
00097 
00098     width = ap->width;
00099     height = ap->height;
00100     frame_rate      = ap->time_base.den;
00101     frame_rate_base = ap->time_base.num;
00102 
00103     if((unsigned)width > 32767 || (unsigned)height > 32767) {
00104         av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
00105             width, height);
00106 
00107         return -1;
00108     }
00109 
00110     st = av_new_stream(s1, 0);
00111     if (!st)
00112         return AVERROR(ENOMEM);
00113     av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
00114 
00115     s->width = width;
00116     s->height = height;
00117     s->frame_rate      = frame_rate;
00118     s->frame_rate_base = frame_rate_base;
00119 
00120     video_fd = open(s1->filename, O_RDWR);
00121     if (video_fd < 0) {
00122         perror(s1->filename);
00123         goto fail;
00124     }
00125 
00126     if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
00127         perror("VIDIOCGCAP");
00128         goto fail;
00129     }
00130 
00131     if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
00132         av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
00133         goto fail;
00134     }
00135 
00136     desired_palette = -1;
00137     desired_depth = -1;
00138     for (j = 0; j < vformat_num; j++) {
00139         if (ap->pix_fmt == video_formats[j].pix_fmt) {
00140             desired_palette = video_formats[j].palette;
00141             desired_depth = video_formats[j].depth;
00142             break;
00143         }
00144     }
00145 
00146     /* set tv standard */
00147     if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
00148         if (!strcasecmp(ap->standard, "pal"))
00149             tuner.mode = VIDEO_MODE_PAL;
00150         else if (!strcasecmp(ap->standard, "secam"))
00151             tuner.mode = VIDEO_MODE_SECAM;
00152         else
00153             tuner.mode = VIDEO_MODE_NTSC;
00154         ioctl(video_fd, VIDIOCSTUNER, &tuner);
00155     }
00156 
00157     /* unmute audio */
00158     audio.audio = 0;
00159     ioctl(video_fd, VIDIOCGAUDIO, &audio);
00160     memcpy(&s->audio_saved, &audio, sizeof(audio));
00161     audio.flags &= ~VIDEO_AUDIO_MUTE;
00162     ioctl(video_fd, VIDIOCSAUDIO, &audio);
00163 
00164     ioctl(video_fd, VIDIOCGPICT, &pict);
00165 #if 0
00166     printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
00167            pict.colour,
00168            pict.hue,
00169            pict.brightness,
00170            pict.contrast,
00171            pict.whiteness);
00172 #endif
00173     /* try to choose a suitable video format */
00174     pict.palette = desired_palette;
00175     pict.depth= desired_depth;
00176     if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
00177         for (j = 0; j < vformat_num; j++) {
00178             pict.palette = video_formats[j].palette;
00179             pict.depth = video_formats[j].depth;
00180             if (-1 != ioctl(video_fd, VIDIOCSPICT, &pict))
00181                 break;
00182         }
00183         if (j >= vformat_num)
00184             goto fail1;
00185     }
00186 
00187     ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
00188     if (ret < 0) {
00189         /* try to use read based access */
00190         struct video_window win;
00191         int val;
00192 
00193         win.x = 0;
00194         win.y = 0;
00195         win.width = width;
00196         win.height = height;
00197         win.chromakey = -1;
00198         win.flags = 0;
00199 
00200         ioctl(video_fd, VIDIOCSWIN, &win);
00201 
00202         s->frame_format = pict.palette;
00203 
00204         val = 1;
00205         ioctl(video_fd, VIDIOCCAPTURE, &val);
00206 
00207         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
00208         s->use_mmap = 0;
00209 
00210         /* ATI All In Wonder automatic activation */
00211         if (!strcmp(s->video_cap.name, "Km")) {
00212             if (aiw_init(s) < 0)
00213                 goto fail;
00214             s->aiw_enabled = 1;
00215             /* force 420P format because conversion from YUV422 to YUV420P
00216                is done in this driver (ugly) */
00217             s->frame_format = VIDEO_PALETTE_YUV420P;
00218         }
00219     } else {
00220         s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
00221         if ((unsigned char*)-1 == s->video_buf) {
00222             s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_PRIVATE,video_fd,0);
00223             if ((unsigned char*)-1 == s->video_buf) {
00224                 perror("mmap");
00225                 goto fail;
00226             }
00227         }
00228         s->gb_frame = 0;
00229         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
00230 
00231         /* start to grab the first frame */
00232         s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
00233         s->gb_buf.height = height;
00234         s->gb_buf.width = width;
00235         s->gb_buf.format = pict.palette;
00236 
00237         ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
00238         if (ret < 0) {
00239             if (errno != EAGAIN) {
00240             fail1:
00241                 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
00242             } else {
00243                 av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
00244             }
00245             goto fail;
00246         }
00247         for (j = 1; j < s->gb_buffers.frames; j++) {
00248           s->gb_buf.frame = j;
00249           ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
00250         }
00251         s->frame_format = s->gb_buf.format;
00252         s->use_mmap = 1;
00253     }
00254 
00255     for (j = 0; j < vformat_num; j++) {
00256         if (s->frame_format == video_formats[j].palette) {
00257             frame_size = width * height * video_formats[j].depth / 8;
00258             st->codec->pix_fmt = video_formats[j].pix_fmt;
00259             break;
00260         }
00261     }
00262 
00263     if (j >= vformat_num)
00264         goto fail;
00265 
00266     s->fd = video_fd;
00267     s->frame_size = frame_size;
00268 
00269     st->codec->codec_type = CODEC_TYPE_VIDEO;
00270     st->codec->codec_id = CODEC_ID_RAWVIDEO;
00271     st->codec->width = width;
00272     st->codec->height = height;
00273     st->codec->time_base.den      = frame_rate;
00274     st->codec->time_base.num = frame_rate_base;
00275     st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
00276 
00277     return 0;
00278  fail:
00279     if (video_fd >= 0)
00280         close(video_fd);
00281     av_free(st);
00282     return AVERROR(EIO);
00283 }
00284 
00285 static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
00286 {
00287     uint8_t *ptr;
00288 
00289     while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
00290            (errno == EAGAIN || errno == EINTR));
00291 
00292     ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
00293     memcpy(buf, ptr, s->frame_size);
00294 
00295     /* Setup to capture the next frame */
00296     s->gb_buf.frame = s->gb_frame;
00297     if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
00298         if (errno == EAGAIN)
00299             av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
00300         else
00301             perror("VIDIOCMCAPTURE");
00302         return AVERROR(EIO);
00303     }
00304 
00305     /* This is now the grabbing frame */
00306     s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
00307 
00308     return s->frame_size;
00309 }
00310 
00311 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
00312 {
00313     VideoData *s = s1->priv_data;
00314     int64_t curtime, delay;
00315     struct timespec ts;
00316 
00317     /* Calculate the time of the next frame */
00318     s->time_frame += INT64_C(1000000);
00319 
00320     /* wait based on the frame rate */
00321     for(;;) {
00322         curtime = av_gettime();
00323         delay = s->time_frame  * s->frame_rate_base / s->frame_rate - curtime;
00324         if (delay <= 0) {
00325             if (delay < INT64_C(-1000000) * s->frame_rate_base / s->frame_rate) {
00326                 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
00327                 s->time_frame += INT64_C(1000000);
00328             }
00329             break;
00330         }
00331         ts.tv_sec = delay / 1000000;
00332         ts.tv_nsec = (delay % 1000000) * 1000;
00333         nanosleep(&ts, NULL);
00334     }
00335 
00336     if (av_new_packet(pkt, s->frame_size) < 0)
00337         return AVERROR(EIO);
00338 
00339     pkt->pts = curtime;
00340 
00341     /* read one frame */
00342     if (s->aiw_enabled) {
00343         return aiw_read_picture(s, pkt->data);
00344     } else if (s->use_mmap) {
00345         return v4l_mm_read_picture(s, pkt->data);
00346     } else {
00347         if (read(s->fd, pkt->data, pkt->size) != pkt->size)
00348             return AVERROR(EIO);
00349         return s->frame_size;
00350     }
00351 }
00352 
00353 static int grab_read_close(AVFormatContext *s1)
00354 {
00355     VideoData *s = s1->priv_data;
00356 
00357     if (s->aiw_enabled)
00358         aiw_close(s);
00359 
00360     if (s->use_mmap)
00361         munmap(s->video_buf, s->gb_buffers.size);
00362 
00363     /* mute audio. we must force it because the BTTV driver does not
00364        return its state correctly */
00365     s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
00366     ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
00367 
00368     close(s->fd);
00369     return 0;
00370 }
00371 
00372 AVInputFormat v4l_demuxer = {
00373     "video4linux",
00374     "video grab",
00375     sizeof(VideoData),
00376     NULL,
00377     grab_read_header,
00378     grab_read_packet,
00379     grab_read_close,
00380     .flags = AVFMT_NOFILE,
00381 };
00382 
00383 /* All in Wonder specific stuff */
00384 /* XXX: remove and merge in libavcodec/imgconvert.c */
00385 
00386 static int aiw_init(VideoData *s)
00387 {
00388     int width, height;
00389 
00390     width = s->width;
00391     height = s->height;
00392 
00393     if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
00394         (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
00395         (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
00396 
00397         s->deint=0;
00398         s->halfw=0;
00399         if (height == s->video_cap.maxheight*2) s->deint=1;
00400         if (width == s->video_cap.maxwidth/2) s->halfw=1;
00401     } else {
00402         av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
00403         av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",
00404                 s->video_cap.maxwidth,s->video_cap.maxheight,
00405                 s->video_cap.maxwidth,s->video_cap.maxheight*2,
00406                 s->video_cap.maxwidth/2,s->video_cap.maxheight);
00407         goto fail;
00408     }
00409 
00410     if (s->halfw == 0) {
00411         s->src_mem = av_malloc(s->width*2);
00412     } else {
00413         s->src_mem = av_malloc(s->width*4);
00414     }
00415     if (!s->src_mem) goto fail;
00416 
00417     s->lum_m4_mem = av_malloc(s->width);
00418     if (!s->lum_m4_mem)
00419         goto fail;
00420     return 0;
00421  fail:
00422     av_freep(&s->src_mem);
00423     av_freep(&s->lum_m4_mem);
00424     return -1;
00425 }
00426 
00427 #ifdef HAVE_MMX
00428 #include "i386/mmx.h"
00429 
00430 #define LINE_WITH_UV \
00431                     movq_m2r(ptr[0],mm0); \
00432                     movq_m2r(ptr[8],mm1);  \
00433                     movq_r2r(mm0, mm4); \
00434                     punpcklbw_r2r(mm1,mm0); \
00435                     punpckhbw_r2r(mm1,mm4); \
00436                     movq_r2r(mm0,mm5); \
00437                     punpcklbw_r2r(mm4,mm0); \
00438                     punpckhbw_r2r(mm4,mm5); \
00439                     movq_r2r(mm0,mm1); \
00440                     punpcklbw_r2r(mm5,mm1); \
00441                     movq_r2m(mm1,lum[0]); \
00442                     movq_m2r(ptr[16],mm2); \
00443                     movq_m2r(ptr[24],mm1); \
00444                     movq_r2r(mm2,mm4); \
00445                     punpcklbw_r2r(mm1,mm2); \
00446                     punpckhbw_r2r(mm1,mm4); \
00447                     movq_r2r(mm2,mm3); \
00448                     punpcklbw_r2r(mm4,mm2); \
00449                     punpckhbw_r2r(mm4,mm3); \
00450                     movq_r2r(mm2,mm1); \
00451                     punpcklbw_r2r(mm3,mm1); \
00452                     movq_r2m(mm1,lum[8]); \
00453                     punpckhdq_r2r(mm2,mm0); \
00454                     punpckhdq_r2r(mm3,mm5); \
00455                     movq_r2m(mm0,cb[0]); \
00456                     movq_r2m(mm5,cr[0]);
00457 
00458 #define LINE_NO_UV \
00459                     movq_m2r(ptr[0],mm0);\
00460                     movq_m2r(ptr[8],mm1);\
00461                     movq_r2r(mm0, mm4);\
00462                     punpcklbw_r2r(mm1,mm0); \
00463                     punpckhbw_r2r(mm1,mm4);\
00464                     movq_r2r(mm0,mm5);\
00465                     punpcklbw_r2r(mm4,mm0);\
00466                     punpckhbw_r2r(mm4,mm5);\
00467                     movq_r2r(mm0,mm1);\
00468                     punpcklbw_r2r(mm5,mm1);\
00469                     movq_r2m(mm1,lum[0]);\
00470                     movq_m2r(ptr[16],mm2);\
00471                     movq_m2r(ptr[24],mm1);\
00472                     movq_r2r(mm2,mm4);\
00473                     punpcklbw_r2r(mm1,mm2);\
00474                     punpckhbw_r2r(mm1,mm4);\
00475                     movq_r2r(mm2,mm3);\
00476                     punpcklbw_r2r(mm4,mm2);\
00477                     punpckhbw_r2r(mm4,mm3);\
00478                     movq_r2r(mm2,mm1);\
00479                     punpcklbw_r2r(mm3,mm1);\
00480                     movq_r2m(mm1,lum[8]);
00481 
00482 #define LINE_WITHUV_AVG \
00483                     movq_m2r(ptr[0], mm0);\
00484                     movq_m2r(ptr[8], mm1);\
00485                     movq_r2r(mm0, mm4);\
00486                     punpcklbw_r2r(mm1,mm0);\
00487                     punpckhbw_r2r(mm1,mm4);\
00488                     movq_r2r(mm0,mm5);\
00489                     punpcklbw_r2r(mm4,mm0);\
00490                     punpckhbw_r2r(mm4,mm5);\
00491                     movq_r2r(mm0,mm1);\
00492                     movq_r2r(mm5,mm2);\
00493                     punpcklbw_r2r(mm7,mm1);\
00494                     punpcklbw_r2r(mm7,mm2);\
00495                     paddw_r2r(mm6,mm1);\
00496                     paddw_r2r(mm2,mm1);\
00497                     psraw_i2r(1,mm1);\
00498                     packuswb_r2r(mm7,mm1);\
00499                     movd_r2m(mm1,lum[0]);\
00500                     movq_m2r(ptr[16],mm2);\
00501                     movq_m2r(ptr[24],mm1);\
00502                     movq_r2r(mm2,mm4);\
00503                     punpcklbw_r2r(mm1,mm2);\
00504                     punpckhbw_r2r(mm1,mm4);\
00505                     movq_r2r(mm2,mm3);\
00506                     punpcklbw_r2r(mm4,mm2);\
00507                     punpckhbw_r2r(mm4,mm3);\
00508                     movq_r2r(mm2,mm1);\
00509                     movq_r2r(mm3,mm4);\
00510                     punpcklbw_r2r(mm7,mm1);\
00511                     punpcklbw_r2r(mm7,mm4);\
00512                     paddw_r2r(mm6,mm1);\
00513                     paddw_r2r(mm4,mm1);\
00514                     psraw_i2r(1,mm1);\
00515                     packuswb_r2r(mm7,mm1);\
00516                     movd_r2m(mm1,lum[4]);\
00517                     punpckhbw_r2r(mm7,mm0);\
00518                     punpckhbw_r2r(mm7,mm2);\
00519                     paddw_r2r(mm6,mm0);\
00520                     paddw_r2r(mm2,mm0);\
00521                     psraw_i2r(1,mm0);\
00522                     packuswb_r2r(mm7,mm0);\
00523                     punpckhbw_r2r(mm7,mm5);\
00524                     punpckhbw_r2r(mm7,mm3);\
00525                     paddw_r2r(mm6,mm5);\
00526                     paddw_r2r(mm3,mm5);\
00527                     psraw_i2r(1,mm5);\
00528                     packuswb_r2r(mm7,mm5);\
00529                     movd_r2m(mm0,cb[0]);\
00530                     movd_r2m(mm5,cr[0]);
00531 
00532 #define LINE_NOUV_AVG \
00533                     movq_m2r(ptr[0],mm0);\
00534                     movq_m2r(ptr[8],mm1);\
00535                     pand_r2r(mm5,mm0);\
00536                     pand_r2r(mm5,mm1);\
00537                     pmaddwd_r2r(mm6,mm0);\
00538                     pmaddwd_r2r(mm6,mm1);\
00539                     packssdw_r2r(mm1,mm0);\
00540                     paddw_r2r(mm6,mm0);\
00541                     psraw_i2r(1,mm0);\
00542                     movq_m2r(ptr[16],mm2);\
00543                     movq_m2r(ptr[24],mm3);\
00544                     pand_r2r(mm5,mm2);\
00545                     pand_r2r(mm5,mm3);\
00546                     pmaddwd_r2r(mm6,mm2);\
00547                     pmaddwd_r2r(mm6,mm3);\
00548                     packssdw_r2r(mm3,mm2);\
00549                     paddw_r2r(mm6,mm2);\
00550                     psraw_i2r(1,mm2);\
00551                     packuswb_r2r(mm2,mm0);\
00552                     movq_r2m(mm0,lum[0]);
00553 
00554 #define DEINT_LINE_LUM(ptroff) \
00555                     movd_m2r(lum_m4[(ptroff)],mm0);\
00556                     movd_m2r(lum_m3[(ptroff)],mm1);\
00557                     movd_m2r(lum_m2[(ptroff)],mm2);\
00558                     movd_m2r(lum_m1[(ptroff)],mm3);\
00559                     movd_m2r(lum[(ptroff)],mm4);\
00560                     punpcklbw_r2r(mm7,mm0);\
00561                     movd_r2m(mm2,lum_m4[(ptroff)]);\
00562                     punpcklbw_r2r(mm7,mm1);\
00563                     punpcklbw_r2r(mm7,mm2);\
00564                     punpcklbw_r2r(mm7,mm3);\
00565                     punpcklbw_r2r(mm7,mm4);\
00566                     psllw_i2r(2,mm1);\
00567                     psllw_i2r(1,mm2);\
00568                     paddw_r2r(mm6,mm1);\
00569                     psllw_i2r(2,mm3);\
00570                     paddw_r2r(mm2,mm1);\
00571                     paddw_r2r(mm4,mm0);\
00572                     paddw_r2r(mm3,mm1);\
00573                     psubusw_r2r(mm0,mm1);\
00574                     psrlw_i2r(3,mm1);\
00575                     packuswb_r2r(mm7,mm1);\
00576                     movd_r2m(mm1,lum_m2[(ptroff)]);
00577 
00578 #else
00579 #include "dsputil.h"
00580 
00581 #define LINE_WITH_UV \
00582                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
00583                     cb[0]=ptr[1];cb[1]=ptr[5];\
00584                     cr[0]=ptr[3];cr[1]=ptr[7];\
00585                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
00586                     cb[2]=ptr[9];cb[3]=ptr[13];\
00587                     cr[2]=ptr[11];cr[3]=ptr[15];\
00588                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
00589                     cb[4]=ptr[17];cb[5]=ptr[21];\
00590                     cr[4]=ptr[19];cr[5]=ptr[23];\
00591                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
00592                     cb[6]=ptr[25];cb[7]=ptr[29];\
00593                     cr[6]=ptr[27];cr[7]=ptr[31];
00594 
00595 #define LINE_NO_UV \
00596                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
00597                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
00598                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
00599                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
00600 
00601 #define LINE_WITHUV_AVG \
00602                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
00603                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
00604                     sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
00605                     sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
00606                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
00607                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
00608                     sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
00609                     sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
00610                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
00611                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
00612                     sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
00613                     sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
00614                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
00615                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
00616                     sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
00617                     sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
00618 
00619 #define LINE_NOUV_AVG \
00620                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
00621                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
00622                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
00623                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
00624                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
00625                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
00626                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
00627                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
00628 
00629 #define DEINT_LINE_LUM(ptroff) \
00630                     sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
00631                     lum_m4[(ptroff)]=lum_m2[(ptroff)];\
00632                     lum_m2[(ptroff)]=cm[(sum+4)>>3];\
00633                     sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
00634                     lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
00635                     lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
00636                     sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
00637                     lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
00638                     lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
00639                     sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
00640                     lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
00641                     lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
00642 
00643 #endif
00644 
00645 
00646 /* Read two fields separately. */
00647 static int aiw_read_picture(VideoData *s, uint8_t *data)
00648 {
00649     uint8_t *ptr, *lum, *cb, *cr;
00650     int h;
00651 #ifndef HAVE_MMX
00652     int sum;
00653 #endif
00654     uint8_t* src = s->src_mem;
00655     uint8_t *ptrend = &src[s->width*2];
00656     lum=data;
00657     cb=&lum[s->width*s->height];
00658     cr=&cb[(s->width*s->height)/4];
00659     if (s->deint == 0 && s->halfw == 0) {
00660         while (read(s->fd,src,s->width*2) < 0) {
00661             usleep(100);
00662         }
00663         for (h = 0; h < s->height-2; h+=2) {
00664             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
00665                 LINE_WITH_UV
00666                     }
00667             read(s->fd,src,s->width*2);
00668             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
00669                 LINE_NO_UV
00670                     }
00671             read(s->fd,src,s->width*2);
00672         }
00673         /*
00674          * Do last two lines
00675          */
00676         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
00677             LINE_WITH_UV
00678                 }
00679         read(s->fd,src,s->width*2);
00680         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
00681             LINE_NO_UV
00682                 }
00683         /* drop second field */
00684         while (read(s->fd,src,s->width*2) < 0) {
00685             usleep(100);
00686         }
00687         for (h = 0; h < s->height - 1; h++) {
00688             read(s->fd,src,s->width*2);
00689         }
00690     } else if (s->halfw == 1) {
00691 #ifdef HAVE_MMX
00692         mmx_t rounder;
00693         mmx_t masker;
00694         rounder.uw[0]=1;
00695         rounder.uw[1]=1;
00696         rounder.uw[2]=1;
00697         rounder.uw[3]=1;
00698         masker.ub[0]=0xff;
00699         masker.ub[1]=0;
00700         masker.ub[2]=0xff;
00701         masker.ub[3]=0;
00702         masker.ub[4]=0xff;
00703         masker.ub[5]=0;
00704         masker.ub[6]=0xff;
00705         masker.ub[7]=0;
00706         pxor_r2r(mm7,mm7);
00707         movq_m2r(rounder,mm6);
00708 #endif
00709         while (read(s->fd,src,s->width*4) < 0) {
00710             usleep(100);
00711         }
00712         ptrend = &src[s->width*4];
00713         for (h = 0; h < s->height-2; h+=2) {
00714             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
00715                 LINE_WITHUV_AVG
00716                     }
00717             read(s->fd,src,s->width*4);
00718 #ifdef HAVE_MMX
00719             movq_m2r(masker,mm5);
00720 #endif
00721             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
00722                 LINE_NOUV_AVG
00723                     }
00724             read(s->fd,src,s->width*4);
00725         }
00726         /*
00727  * Do last two lines
00728  */
00729         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
00730             LINE_WITHUV_AVG
00731                 }
00732         read(s->fd,src,s->width*4);
00733 #ifdef HAVE_MMX
00734         movq_m2r(masker,mm5);
00735 #endif
00736         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
00737             LINE_NOUV_AVG
00738                 }
00739         /* drop second field */
00740         while (read(s->fd,src,s->width*4) < 0) {
00741             usleep(100);
00742         }
00743         for (h = 0; h < s->height - 1; h++) {
00744             read(s->fd,src,s->width*4);
00745         }
00746     } else {
00747         uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
00748 #ifdef HAVE_MMX
00749         mmx_t rounder;
00750         rounder.uw[0]=4;
00751         rounder.uw[1]=4;
00752         rounder.uw[2]=4;
00753         rounder.uw[3]=4;
00754         movq_m2r(rounder,mm6);
00755         pxor_r2r(mm7,mm7);
00756 #else
00757         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
00758 #endif
00759 
00760         /* read two fields and deinterlace them */
00761         while (read(s->fd,src,s->width*2) < 0) {
00762             usleep(100);
00763         }
00764         for (h = 0; h < (s->height/2)-2; h+=2) {
00765             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
00766                 LINE_WITH_UV
00767                     }
00768             read(s->fd,src,s->width*2);
00769             /* skip a luminance line - will be filled in later */
00770             lum += s->width;
00771             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
00772                 LINE_WITH_UV
00773                     }
00774             /* skip a luminance line - will be filled in later */
00775             lum += s->width;
00776             read(s->fd,src,s->width*2);
00777         }
00778         /*
00779  * Do last two lines
00780  */
00781         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
00782             LINE_WITH_UV
00783                 }
00784         /* skip a luminance line - will be filled in later */
00785         lum += s->width;
00786         read(s->fd,src,s->width*2);
00787         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
00788             LINE_WITH_UV
00789                 }
00790         /*
00791  *
00792  * SECOND FIELD
00793  *
00794  */
00795         lum=&data[s->width];
00796         while (read(s->fd,src,s->width*2) < 0) {
00797             usleep(10);
00798         }
00799         /* First (and last) two lines not interlaced */
00800         for (h = 0; h < 2; h++) {
00801             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
00802                 LINE_NO_UV
00803                     }
00804             read(s->fd,src,s->width*2);
00805             /* skip a luminance line */
00806             lum += s->width;
00807         }
00808         lum_m1=&lum[-s->width];
00809         lum_m2=&lum_m1[-s->width];
00810         lum_m3=&lum_m2[-s->width];
00811         memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
00812         for (; h < (s->height/2)-1; h++) {
00813             lum_m4=s->lum_m4_mem;
00814             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
00815                 LINE_NO_UV
00816 
00817                     DEINT_LINE_LUM(0)
00818                     DEINT_LINE_LUM(4)
00819                     DEINT_LINE_LUM(8)
00820                     DEINT_LINE_LUM(12)
00821                     }
00822             read(s->fd,src,s->width*2);
00823             /* skip a luminance line */
00824             lum += s->width;
00825             lum_m1 += s->width;
00826             lum_m2 += s->width;
00827             lum_m3 += s->width;
00828             //                lum_m4 += s->width;
00829         }
00830         /*
00831  * Do last line
00832  */
00833         lum_m4=s->lum_m4_mem;
00834         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
00835             LINE_NO_UV
00836 
00837                 DEINT_LINE_LUM(0)
00838                 DEINT_LINE_LUM(4)
00839                 DEINT_LINE_LUM(8)
00840                 DEINT_LINE_LUM(12)
00841                 }
00842     }
00843     emms_c();
00844     return s->frame_size;
00845 }
00846 
00847 static int aiw_close(VideoData *s)
00848 {
00849     av_freep(&s->lum_m4_mem);
00850     av_freep(&s->src_mem);
00851     return 0;
00852 }