diff options
Diffstat (limited to 'multimedia/ffmpeg-devel/files/grab_bsdbktr.c')
| -rw-r--r-- | multimedia/ffmpeg-devel/files/grab_bsdbktr.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/multimedia/ffmpeg-devel/files/grab_bsdbktr.c b/multimedia/ffmpeg-devel/files/grab_bsdbktr.c deleted file mode 100644 index 06499141ea6d..000000000000 --- a/multimedia/ffmpeg-devel/files/grab_bsdbktr.c +++ /dev/null @@ -1,266 +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 <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_size; -} VideoData; - -const char *video_device = "/dev/bktr0"; - -#define GRABBER_SETTLE_TIME 3 -#define PAL 1 -#define NTSC 2 -/* PAL is 768 x 576. NTSC is 640 x 480 */ -#define PAL_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 signal_expected = 0; -static int unexpected_signals = 0; - -static void catchsignal(int signal) -{ - if (!signal_expected) unexpected_signals++; - signal_expected = 0; - return; -} - -static int bktr_init(AVFormatContext *s1, AVFormatParameters *ap) -{ - VideoData *s = s1->priv_data; - int width, height; - 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->tuner_fd = open ("/dev/tuner0", O_RDWR); - if (s->tuner_fd < 0) { - perror("Warning: Tuner not opened continuing"); - } - - video_fd = open(video_device, O_RDWR); - 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_PACKED; - - if ((format == PAL) && (height <= (PAL_HEIGHT/2))) - geo.oformat |= METEOR_GEO_EVEN_ONLY; - if ((format == NTSC) && (height <= (NTSC_HEIGHT/2))) - geo.oformat |= METEOR_GEO_EVEN_ONLY; - - if (ioctl(video_fd, METEORSETGEO, &geo) < 0) { - perror ("METEORSETGEO"); - return -EIO; - } - - switch (format) { - case PAL: c = METEOR_FMT_PAL; break; - case NTSC: c = METEOR_FMT_NTSC; break; - default: c = METEOR_FMT_PAL; break; - } - - if (ioctl(video_fd, METEORSFMT, &c) < 0) { - perror ("METEORSFMT"); - return -EIO; - } - - c = VIDEO_INPUT; - if (ioctl(video_fd, METEORSINPUT, &c) < 0) { - perror ("METEORSINPUT"); - return -EIO; - } - video_buf = mmap((caddr_t)0, width*height*2, 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; - signal_expected = 1; - ioctl (s->fd, METEORSSIGNAL, &c); - return 0; -} - -static void bf_yuv422_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr, - UINT8 *src, int width, int height) -{ - int x, y; - UINT8 *p = src; - for(y=0;y<height;y+=2) { - for(x=0;x<width;x+=2) { - lum[0] = p[1]; - cb[0] = p[0]; - lum[1] = p[3]; - cr[0] = p[2]; - p += 4; - lum += 2; - cb++; - cr++; - } - for(x=0;x<width;x+=2) { - lum[0] = p[1]; - lum[1] = p[3]; - p += 4; - lum += 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; - sigset_t msig; - UINT8 *lum, *cb, *cr; - - size = s->width * s->height; - halfsize = size << 1; - if (av_new_packet(pkt, size + halfsize) < 0) - return -EIO; - - if (unexpected_signals > 0) { - unexpected_signals--; - } else { - signal_expected = 1; - sigemptyset (&msig); - sigsuspend (&msig); - } - - if (unexpected_signals & 1) { - bzero (pkt->data, size + halfsize); - } else { - lum = pkt->data; - cb = lum + size; - cr = cb + size/4; - - bf_yuv422_to_yuv420p (lum, cb, cr, video_buf, s->width, s->height); - } - 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->frame_size = width*height*2; - 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; - - 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; -} |