00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025
00026
00027 #define _BSD_SOURCE 1
00028 #define _NETBSD_SOURCE
00029
00030 #include "libavformat/avformat.h"
00031 #if HAVE_DEV_BKTR_IOCTL_METEOR_H && HAVE_DEV_BKTR_IOCTL_BT848_H
00032 # include <dev/bktr/ioctl_meteor.h>
00033 # include <dev/bktr/ioctl_bt848.h>
00034 #elif HAVE_MACHINE_IOCTL_METEOR_H && HAVE_MACHINE_IOCTL_BT848_H
00035 # include <machine/ioctl_meteor.h>
00036 # include <machine/ioctl_bt848.h>
00037 #elif HAVE_DEV_VIDEO_METEOR_IOCTL_METEOR_H && HAVE_DEV_VIDEO_BKTR_IOCTL_BT848_H
00038 # include <dev/video/meteor/ioctl_meteor.h>
00039 # include <dev/video/bktr/ioctl_bt848.h>
00040 #elif HAVE_DEV_IC_BT8XX_H
00041 # include <dev/ic/bt8xx.h>
00042 #endif
00043 #include <unistd.h>
00044 #include <fcntl.h>
00045 #include <sys/ioctl.h>
00046 #include <sys/mman.h>
00047 #include <sys/time.h>
00048 #include <signal.h>
00049 #include <stdint.h>
00050 #include <strings.h>
00051
00052 typedef struct {
00053 int video_fd;
00054 int tuner_fd;
00055 int width, height;
00056 int frame_rate;
00057 int frame_rate_base;
00058 uint64_t per_frame;
00059 } VideoData;
00060
00061
00062 #define PAL 1
00063 #define PALBDGHI 1
00064 #define NTSC 2
00065 #define NTSCM 2
00066 #define SECAM 3
00067 #define PALN 4
00068 #define PALM 5
00069 #define NTSCJ 6
00070
00071
00072 #define PAL_HEIGHT 576
00073 #define SECAM_HEIGHT 576
00074 #define NTSC_HEIGHT 480
00075
00076 #ifndef VIDEO_FORMAT
00077 #define VIDEO_FORMAT NTSC
00078 #endif
00079
00080 static int bktr_dev[] = { METEOR_DEV0, METEOR_DEV1, METEOR_DEV2,
00081 METEOR_DEV3, METEOR_DEV_SVIDEO };
00082
00083 uint8_t *video_buf;
00084 size_t video_buf_size;
00085 uint64_t last_frame_time;
00086 volatile sig_atomic_t nsignals;
00087
00088
00089 static void catchsignal(int signal)
00090 {
00091 nsignals++;
00092 return;
00093 }
00094
00095 static av_cold int bktr_init(const char *video_device, int width, int height,
00096 int format, int *video_fd, int *tuner_fd, int idev, double frequency)
00097 {
00098 struct meteor_geomet geo;
00099 int h_max;
00100 long ioctl_frequency;
00101 char *arg;
00102 int c;
00103 struct sigaction act, old;
00104
00105 if (idev < 0 || idev > 4)
00106 {
00107 arg = getenv ("BKTR_DEV");
00108 if (arg)
00109 idev = atoi (arg);
00110 if (idev < 0 || idev > 4)
00111 idev = 1;
00112 }
00113
00114 if (format < 1 || format > 6)
00115 {
00116 arg = getenv ("BKTR_FORMAT");
00117 if (arg)
00118 format = atoi (arg);
00119 if (format < 1 || format > 6)
00120 format = VIDEO_FORMAT;
00121 }
00122
00123 if (frequency <= 0)
00124 {
00125 arg = getenv ("BKTR_FREQUENCY");
00126 if (arg)
00127 frequency = atof (arg);
00128 if (frequency <= 0)
00129 frequency = 0.0;
00130 }
00131
00132 memset(&act, 0, sizeof(act));
00133 sigemptyset(&act.sa_mask);
00134 act.sa_handler = catchsignal;
00135 sigaction(SIGUSR1, &act, &old);
00136
00137 *tuner_fd = open("/dev/tuner0", O_RDONLY);
00138 if (*tuner_fd < 0)
00139 av_log(NULL, AV_LOG_ERROR, "Warning. Tuner not opened, continuing: %s\n", strerror(errno));
00140
00141 *video_fd = open(video_device, O_RDONLY);
00142 if (*video_fd < 0) {
00143 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", video_device, strerror(errno));
00144 return -1;
00145 }
00146
00147 geo.rows = height;
00148 geo.columns = width;
00149 geo.frames = 1;
00150 geo.oformat = METEOR_GEO_YUV_422 | METEOR_GEO_YUV_12;
00151
00152 switch (format) {
00153 case PAL: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALBDGHI; break;
00154 case PALN: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALN; break;
00155 case PALM: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALM; break;
00156 case SECAM: h_max = SECAM_HEIGHT; c = BT848_IFORM_F_SECAM; break;
00157 case NTSC: h_max = NTSC_HEIGHT; c = BT848_IFORM_F_NTSCM; break;
00158 case NTSCJ: h_max = NTSC_HEIGHT; c = BT848_IFORM_F_NTSCJ; break;
00159 default: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALBDGHI; break;
00160 }
00161
00162 if (height <= h_max / 2)
00163 geo.oformat |= METEOR_GEO_EVEN_ONLY;
00164
00165 if (ioctl(*video_fd, METEORSETGEO, &geo) < 0) {
00166 av_log(NULL, AV_LOG_ERROR, "METEORSETGEO: %s\n", strerror(errno));
00167 return -1;
00168 }
00169
00170 if (ioctl(*video_fd, BT848SFMT, &c) < 0) {
00171 av_log(NULL, AV_LOG_ERROR, "BT848SFMT: %s\n", strerror(errno));
00172 return -1;
00173 }
00174
00175 c = bktr_dev[idev];
00176 if (ioctl(*video_fd, METEORSINPUT, &c) < 0) {
00177 av_log(NULL, AV_LOG_ERROR, "METEORSINPUT: %s\n", strerror(errno));
00178 return -1;
00179 }
00180
00181 video_buf_size = width * height * 12 / 8;
00182
00183 video_buf = (uint8_t *)mmap((caddr_t)0, video_buf_size,
00184 PROT_READ, MAP_SHARED, *video_fd, (off_t)0);
00185 if (video_buf == MAP_FAILED) {
00186 av_log(NULL, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
00187 return -1;
00188 }
00189
00190 if (frequency != 0.0) {
00191 ioctl_frequency = (unsigned long)(frequency*16);
00192 if (ioctl(*tuner_fd, TVTUNER_SETFREQ, &ioctl_frequency) < 0)
00193 av_log(NULL, AV_LOG_ERROR, "TVTUNER_SETFREQ: %s\n", strerror(errno));
00194 }
00195
00196 c = AUDIO_UNMUTE;
00197 if (ioctl(*tuner_fd, BT848_SAUDIO, &c) < 0)
00198 av_log(NULL, AV_LOG_ERROR, "TVTUNER_SAUDIO: %s\n", strerror(errno));
00199
00200 c = METEOR_CAP_CONTINOUS;
00201 ioctl(*video_fd, METEORCAPTUR, &c);
00202
00203 c = SIGUSR1;
00204 ioctl(*video_fd, METEORSSIGNAL, &c);
00205
00206 return 0;
00207 }
00208
00209 static void bktr_getframe(uint64_t per_frame)
00210 {
00211 uint64_t curtime;
00212
00213 curtime = av_gettime();
00214 if (!last_frame_time
00215 || ((last_frame_time + per_frame) > curtime)) {
00216 if (!usleep(last_frame_time + per_frame + per_frame / 8 - curtime)) {
00217 if (!nsignals)
00218 av_log(NULL, AV_LOG_INFO,
00219 "SLEPT NO signals - %d microseconds late\n",
00220 (int)(av_gettime() - last_frame_time - per_frame));
00221 }
00222 }
00223 nsignals = 0;
00224 last_frame_time = curtime;
00225 }
00226
00227
00228
00229 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
00230 {
00231 VideoData *s = s1->priv_data;
00232
00233 if (av_new_packet(pkt, video_buf_size) < 0)
00234 return AVERROR(EIO);
00235
00236 bktr_getframe(s->per_frame);
00237
00238 pkt->pts = av_gettime();
00239 memcpy(pkt->data, video_buf, video_buf_size);
00240
00241 return video_buf_size;
00242 }
00243
00244 static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
00245 {
00246 VideoData *s = s1->priv_data;
00247 AVStream *st;
00248 int width, height;
00249 int frame_rate;
00250 int frame_rate_base;
00251 int format = -1;
00252
00253 if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0)
00254 return -1;
00255
00256 width = ap->width;
00257 height = ap->height;
00258 frame_rate = ap->time_base.den;
00259 frame_rate_base = ap->time_base.num;
00260
00261 st = av_new_stream(s1, 0);
00262 if (!st)
00263 return AVERROR(ENOMEM);
00264 av_set_pts_info(st, 64, 1, 1000000);
00265
00266 s->width = width;
00267 s->height = height;
00268 s->frame_rate = frame_rate;
00269 s->frame_rate_base = frame_rate_base;
00270 s->per_frame = ((uint64_t)1000000 * s->frame_rate_base) / s->frame_rate;
00271
00272 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00273 st->codec->pix_fmt = PIX_FMT_YUV420P;
00274 st->codec->codec_id = CODEC_ID_RAWVIDEO;
00275 st->codec->width = width;
00276 st->codec->height = height;
00277 st->codec->time_base.den = frame_rate;
00278 st->codec->time_base.num = frame_rate_base;
00279
00280 if (ap->standard) {
00281 if (!strcasecmp(ap->standard, "pal"))
00282 format = PAL;
00283 else if (!strcasecmp(ap->standard, "secam"))
00284 format = SECAM;
00285 else if (!strcasecmp(ap->standard, "ntsc"))
00286 format = NTSC;
00287 }
00288
00289 if (bktr_init(s1->filename, width, height, format,
00290 &(s->video_fd), &(s->tuner_fd), -1, 0.0) < 0)
00291 return AVERROR(EIO);
00292
00293 nsignals = 0;
00294 last_frame_time = 0;
00295
00296 return 0;
00297 }
00298
00299 static int grab_read_close(AVFormatContext *s1)
00300 {
00301 VideoData *s = s1->priv_data;
00302 int c;
00303
00304 c = METEOR_CAP_STOP_CONT;
00305 ioctl(s->video_fd, METEORCAPTUR, &c);
00306 close(s->video_fd);
00307
00308 c = AUDIO_MUTE;
00309 ioctl(s->tuner_fd, BT848_SAUDIO, &c);
00310 close(s->tuner_fd);
00311
00312 munmap((caddr_t)video_buf, video_buf_size);
00313
00314 return 0;
00315 }
00316
00317 AVInputFormat bktr_demuxer = {
00318 "bktr",
00319 NULL_IF_CONFIG_SMALL("video grab"),
00320 sizeof(VideoData),
00321 NULL,
00322 grab_read_header,
00323 grab_read_packet,
00324 grab_read_close,
00325 .flags = AVFMT_NOFILE,
00326 };