From b868b85dad07dc784bf9595c7105e47d69e2e75c Mon Sep 17 00:00:00 2001 From: Mario Sergio Fujikawa Ferreira Date: Tue, 5 Nov 2002 02:00:06 +0000 Subject: o Update booktree capture code to latest version: 1) Warning message if the tuner device cannot be opened for write 2) A two stage sync slip recovery mechanism, stage 1 runs async to catch up, stage 2 injects a blank frame 3) Update to a consistent indent style (will minimize future diffs) o Bump PORTREVISION Submitted by: "Steve O'Hara-Smith" --- multimedia/ffmpeg045/files/grab_bsdbktr.c | 332 ++++++++++++++++-------------- 1 file changed, 175 insertions(+), 157 deletions(-) (limited to 'multimedia/ffmpeg045/files') diff --git a/multimedia/ffmpeg045/files/grab_bsdbktr.c b/multimedia/ffmpeg045/files/grab_bsdbktr.c index 6f171ea7b3a9..06499141ea6d 100644 --- a/multimedia/ffmpeg045/files/grab_bsdbktr.c +++ b/multimedia/ffmpeg045/files/grab_bsdbktr.c @@ -33,12 +33,12 @@ #include typedef struct { - int fd; - int tuner_fd; - int frame_format; /* see VIDEO_PALETTE_xxx */ - int width, height; - int frame_rate; - int frame_size; + 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"; @@ -60,185 +60,203 @@ const char *video_device = "/dev/bktr0"; static UINT8 *video_buf; +static int signal_expected = 0; +static int unexpected_signals = 0; + static void catchsignal(int signal) { - return; + 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); - - 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; // RGB - if ((format == PAL) && (height <= (PAL_HEIGHT/2))) - geo.oformat |= METEOR_GEO_ODD_ONLY; - if ((format == NTSC) && (height <= (NTSC_HEIGHT/2))) - geo.oformat |= METEOR_GEO_ODD_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, // RGB - 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; + 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) + UINT8 *src, int width, int height) { - int x, y; - UINT8 *p = src; - for(y=0;ypriv_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; - - sigemptyset (&msig); - sigsuspend (&msig); - - 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; + 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; /*RGB*/ - 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); + 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; + 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", + "video_grab_device", + "video grab", sizeof(VideoData), NULL, - grab_read_header, - grab_read_packet, - grab_read_close, - flags: AVFMT_NOFILE, + grab_read_header, + grab_read_packet, + grab_read_close, + flags: AVFMT_NOFILE, }; int video_grab_init(void) -- cgit v1.2.3