diff options
Diffstat (limited to 'multimedia/ffmpeg-devel/files/grab_bsdbktr.c')
| -rw-r--r-- | multimedia/ffmpeg-devel/files/grab_bsdbktr.c | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/multimedia/ffmpeg-devel/files/grab_bsdbktr.c b/multimedia/ffmpeg-devel/files/grab_bsdbktr.c deleted file mode 100644 index 2dc397a8d804..000000000000 --- a/multimedia/ffmpeg-devel/files/grab_bsdbktr.c +++ /dev/null @@ -1,246 +0,0 @@ -/* - * 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 <machine/ioctl_meteor.h> -#include <machine/ioctl_bt848.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; - INT64 per_frame; - INT64 last_frame_time; -} 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 - -#ifndef VIDEO_INPUT -#define VIDEO_INPUT METEOR_INPUT_DEV0; -#endif - -static UINT8 *video_buf; -static int nsignals = 0; -static void catchsignal(int signal) -{ - nsignals++; - return; -} - -static int bktr_init(AVFormatContext *s1, AVFormatParameters *ap) -{ - VideoData *s = s1->priv_data; - int width, height, h_max; - int video_fd; - int format = VIDEO_FORMAT; - struct meteor_geomet geo; - int c; - struct sigaction act,old; - - memset(&act,0,sizeof(act)); - sigemptyset(&act.sa_mask); - act.sa_handler = catchsignal; - sigaction(SIGUSR1,&act,&old); - sigaction(SIGALRM,&act,&old); - - width = s->width; - height = s->height; - s->last_frame_time = 0; - - s->tuner_fd = open ("/dev/tuner0", O_RDONLY); - if (s->tuner_fd < 0) { - perror("Warning: Tuner not opened continuing"); - } - - video_fd = open(video_device, O_RDONLY); - if (video_fd < 0) { - perror(video_device); - return -EIO; - } - s->fd=video_fd; - geo.rows = height; - geo.columns = width; - geo.frames = 1; - geo.oformat = METEOR_GEO_YUV_422 | METEOR_GEO_YUV_12; - - 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 -EIO; - } - - if (ioctl(video_fd, BT848SFMT, &c) < 0) { - perror ("BT848SFMT"); - return -EIO; - } - - c = VIDEO_INPUT; - if (ioctl(video_fd, METEORSINPUT, &c) < 0) { - perror ("METEORSINPUT"); - return -EIO; - } - video_buf = mmap((caddr_t)0, width*height*3, PROT_READ, MAP_SHARED, - video_fd, (off_t) 0); - if (video_buf == MAP_FAILED) { - perror ("mmap"); - return -EIO; - } - c = METEOR_CAP_CONTINOUS; - ioctl(s->fd, METEORCAPTUR, &c); - c = SIGUSR1; - ioctl (s->fd, METEORSSIGNAL, &c); - return 0; -} - -/* 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; - UINT64 curtime; - - size = s->width * s->height; - halfsize = size << 1; - if (av_new_packet(pkt, size + halfsize) < 0) - return -EIO; - - curtime = av_gettime(); - if (!s->last_frame_time - || ((s->last_frame_time + s->per_frame) > curtime)) { - if (!usleep (s->last_frame_time + s->per_frame + s->per_frame/8 - curtime)) { - if (!nsignals) - printf ("\nSLEPT NO signals - %d microseconds late\n", - av_gettime() - s->last_frame_time - s->per_frame); - } - } - nsignals = 0; - - s->last_frame_time = curtime; - pkt->pts = curtime & ((1LL << 48) - 1); - memcpy (pkt->data, video_buf, size + halfsize); - return size + halfsize; -} - -static int grab_read_header (AVFormatContext *s1, AVFormatParameters *ap) -{ - VideoData *s = s1->priv_data; - AVStream *st; - int width, height; - int frame_rate; - - 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; - st = av_new_stream(s1, 0); - if (!st) - return -ENOMEM; - s1->priv_data = s; - s1->nb_streams = 1; - s1->streams[0] = st; - - s->width = width; - s->height = height; - s->frame_rate = frame_rate; - s->per_frame = (INT64_C(1000000) * FRAME_RATE_BASE) / s->frame_rate; - st->codec.pix_fmt = PIX_FMT_YUV420P; - st->codec.codec_id = CODEC_ID_RAWVIDEO; - st->codec.width = width; - st->codec.height = height; - st->codec.frame_rate = frame_rate; - - av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */ - - return bktr_init(s1, ap); -} - -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); - free(s); - return 0; -} - -AVInputFormat video_grab_device_format = { - "video_grab_device", - "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; -} |