diff options
Diffstat (limited to 'multimedia/ffmpeg/files/grab_bsdbktr.c')
| -rw-r--r-- | multimedia/ffmpeg/files/grab_bsdbktr.c | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/multimedia/ffmpeg/files/grab_bsdbktr.c b/multimedia/ffmpeg/files/grab_bsdbktr.c new file mode 100644 index 00000000000..8932d6364f9 --- /dev/null +++ b/multimedia/ffmpeg/files/grab_bsdbktr.c @@ -0,0 +1,325 @@ +/* + * FreeBSD video grab interface + * Copyright (c) 2002 Steve O'Hara-Smith + * based on + * Linux video grab interface + * Copyright (c) 2000,2001 Gerard Lantau. + * and + * simple_grab.c Copyright (c) 1999 Roger Hardiman + * + * GPL virus inherited: + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include "avformat.h" +#include <dev/ic/bt8xx.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/time.h> +#include <signal.h> + +typedef struct { + int fd; + int tuner_fd; + int frame_format; /* see VIDEO_PALETTE_xxx */ + int width, height; + int frame_rate; + int frame_rate_base; + int64_t per_frame; +} VideoData; + +const char *video_device = "/dev/bktr0"; + +#define PAL 1 +#define PALBDGHI 1 +#define NTSC 2 +#define NTSCM 2 +#define SECAM 3 +#define PALN 4 +#define PALM 5 +#define NTSCJ 6 + +/* PAL is 768 x 576. NTSC is 640 x 480 */ +#define PAL_HEIGHT 576 +#define SECAM_HEIGHT 576 +#define NTSC_HEIGHT 480 + +#ifndef VIDEO_FORMAT +#define VIDEO_FORMAT NTSC +#endif + +static int bktr_dev[] = { METEOR_DEV0, METEOR_DEV1, METEOR_DEV2, + METEOR_DEV3, METEOR_DEV_SVIDEO }; + +static u_int8_t *video_buf; +static int nsignals = 0; +static void catchsignal(int signal) +{ + nsignals++; + return; +} + +static int bktr_init (const char *video_device, int width, int height, + int format, u_int8_t **video_buf, int *video_fd, int *tuner_fd, + int idev, double frequency) +{ + struct meteor_geomet geo; + int h_max; + long ioctl_frequency; + char *arg; + int c; + int channel = 0; + struct sigaction act,old; + + if (idev < 0 || idev > 4) + { + arg = getenv ("BKTR_DEV"); + if (arg) + idev = atoi (arg); + if (idev < 0 || idev > 4) + idev = 0; + } + + if (format < 1 || format > 6) + { + arg = getenv ("BKTR_FORMAT"); + if (arg) + format = atoi (arg); + if (format < 1 || format > 6) + format = VIDEO_FORMAT; + } + + if (frequency <= 0) + { + arg = getenv ("BKTR_FREQUENCY"); + if (arg) + frequency = atof (arg); + if (frequency <= 0) + frequency = 0.0; + } + + arg = getenv ("BKTR_CHANNEL"); + if (arg) + channel = atoi (arg); + if (channel < 0) + channel = 0; + + memset(&act,0,sizeof(act)); + sigemptyset(&act.sa_mask); + act.sa_handler = catchsignal; + sigaction(SIGUSR1,&act,&old); + + *tuner_fd = open ("/dev/tuner0", O_RDONLY); + if (*tuner_fd < 0) { + perror("Warning: Tuner not opened continuing"); + } + + *video_fd = open (video_device, O_RDONLY); + if (*video_fd < 0) { + perror (video_device); + return -1; + } + + geo.rows = height; + geo.columns = width; + geo.frames = 1; +// geo.oformat = METEOR_GEO_YUV_422 | METEOR_GEO_YUV_12; + geo.oformat = METEOR_GEO_YUV_PACKED; + + switch (format) { + case PAL: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALBDGHI; break; + case PALN: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALN; break; + case PALM: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALM; break; + case SECAM: h_max = SECAM_HEIGHT; c = BT848_IFORM_F_SECAM; break; + case NTSC: h_max = NTSC_HEIGHT; c = BT848_IFORM_F_NTSCM; break; + case NTSCJ: h_max = NTSC_HEIGHT; c = BT848_IFORM_F_NTSCJ; break; + default: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALBDGHI; break; + } + if (height <= h_max/2) { + geo.oformat |= METEOR_GEO_EVEN_ONLY; + } + + if (ioctl(*video_fd, METEORSETGEO, &geo) < 0) { + perror ("METEORSETGEO"); + return -1; + } + + if (ioctl(*video_fd, BT848SFMT, &c) < 0) { + perror ("BT848SFMT"); + return -1; + } + + c = bktr_dev[idev]; + if (ioctl(*video_fd, METEORSINPUT, &c) < 0) { + perror ("METEORSINPUT"); + return -1; + } + *video_buf = (u_int8_t *) mmap((caddr_t)0, width*height*2, + PROT_READ, MAP_SHARED, *video_fd, (off_t) 0); + if (*video_buf == MAP_FAILED) { + perror ("mmap"); + return -1; + } + if (frequency != 0.0) { + ioctl_frequency = (unsigned long)(frequency*16); + if (ioctl(*tuner_fd, TVTUNER_SETFREQ, &ioctl_frequency)<0) + perror("TVTUNER_SETFREQ"); + } + if (channel != 0) { + if (ioctl(*tuner_fd, TVTUNER_SETCHNL, &channel) < 0) + perror("TVTUNER_SETCHNL"); + } + c = METEOR_CAP_CONTINOUS; + ioctl(*video_fd, METEORCAPTUR, &c); + c = SIGUSR1; + ioctl (*video_fd, METEORSSIGNAL, &c); + return 0; +} + +static void bktr_getframe(u_int64_t per_frame) +{ + u_int64_t curtime; + static u_int64_t last_frame_time = 0; + + curtime = av_gettime(); + if (!last_frame_time + || ((last_frame_time + per_frame) > curtime)) { + if (!usleep (last_frame_time + per_frame + per_frame/8 - curtime)) { + if (!nsignals) + printf ("\nSLEPT NO signals - %d microseconds late\n", + (int) (av_gettime() - last_frame_time - per_frame)); + } + } + nsignals = 0; + + last_frame_time = curtime; +} + +void bf_memcpy (char *dest, char *src, int size) +{ + while (size -= 2) + { + dest[0] = src[1]; + dest[1] = src[0]; + dest += 2; + src += 2; + } +} + +/* note: we support only one picture read at a time */ +static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt) +{ + VideoData *s = s1->priv_data; + int size, halfsize; + + size = s->width * s->height; + halfsize = size << 1; + +// if (av_new_packet(pkt, size + halfsize) < 0) + if (av_new_packet(pkt, size + size) < 0) + return -EIO; + + bktr_getframe (s->per_frame); + pkt->pts = av_gettime() & ((1LL << 48) - 1); + bf_memcpy (pkt->data, video_buf, size + size); +// bf_memcpy (pkt->data, video_buf, size + halfsize); + +// return size + halfsize; + return size + size; +} + +static int grab_read_header (AVFormatContext *s1, AVFormatParameters *ap) +{ + VideoData *s = s1->priv_data; + AVStream *st; + int width, height; + int frame_rate; + int frame_rate_base; + int format = -1; + + if (!ap || ap->width <= 0 || ap->height <= 0 || ap->frame_rate <= 0) + return -1; + + width = ap->width; + height = ap->height; + frame_rate = ap->frame_rate; + frame_rate_base = ap->frame_rate_base; + + st = av_new_stream(s1, 0); + if (!st) + return -ENOMEM; + + s->width = width; + s->height = height; + s->frame_rate = frame_rate; + s->frame_rate_base = frame_rate_base; + s->per_frame = ((int64_t)1000000 * s->frame_rate_base) / s->frame_rate; + + st->codec.codec_type = CODEC_TYPE_VIDEO; +// st->codec.pix_fmt = PIX_FMT_YUV420P; + st->codec.pix_fmt = PIX_FMT_YUV422; + st->codec.codec_id = CODEC_ID_RAWVIDEO; + st->codec.width = width; + st->codec.height = height; + st->codec.frame_rate = frame_rate; + st->codec.frame_rate_base = frame_rate_base; + + av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in use */ + + if (ap->standard) { + if (!strcasecmp(ap->standard, "pal")) + format = PAL; + if (!strcasecmp(ap->standard, "secam")) + format = SECAM; + if (!strcasecmp(ap->standard, "ntsc")) + format = NTSC; + } + + if (bktr_init (video_device, width, height, format, &video_buf, + &(s->fd), &(s->tuner_fd), -1, 0.0) < 0) + return -EIO; + return 0; +} + +static int grab_read_close (AVFormatContext *s1) +{ + VideoData *s = s1->priv_data; + + int c = METEOR_CAP_STOP_CONT; + ioctl(s->fd, METEORCAPTUR, &c); + close(s->fd); + close(s->tuner_fd); + av_free(s); + return 0; +} + +AVInputFormat video_grab_device_format = { + "video4linux", + "video grab", + sizeof(VideoData), + NULL, + grab_read_header, + grab_read_packet, + grab_read_close, + flags: AVFMT_NOFILE, +}; + +int video_grab_init(void) +{ + av_register_input_format(&video_grab_device_format); + return 0; +} |