diff options
Diffstat (limited to 'ffmpeg1/libavdevice/bktr.c')
| -rw-r--r-- | ffmpeg1/libavdevice/bktr.c | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/ffmpeg1/libavdevice/bktr.c b/ffmpeg1/libavdevice/bktr.c deleted file mode 100644 index b0dbe60..0000000 --- a/ffmpeg1/libavdevice/bktr.c +++ /dev/null @@ -1,347 +0,0 @@ -/* - * *BSD 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 - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "libavformat/internal.h" -#include "libavutil/log.h" -#include "libavutil/opt.h" -#include "libavutil/parseutils.h" -#include "libavutil/time.h" -#if HAVE_DEV_BKTR_IOCTL_METEOR_H && HAVE_DEV_BKTR_IOCTL_BT848_H -# include <dev/bktr/ioctl_meteor.h> -# include <dev/bktr/ioctl_bt848.h> -#elif HAVE_MACHINE_IOCTL_METEOR_H && HAVE_MACHINE_IOCTL_BT848_H -# include <machine/ioctl_meteor.h> -# include <machine/ioctl_bt848.h> -#elif HAVE_DEV_VIDEO_METEOR_IOCTL_METEOR_H && HAVE_DEV_VIDEO_BKTR_IOCTL_BT848_H -# include <dev/video/meteor/ioctl_meteor.h> -# include <dev/video/bktr/ioctl_bt848.h> -#elif HAVE_DEV_IC_BT8XX_H -# include <dev/ic/bt8xx.h> -#endif -#include <unistd.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <sys/time.h> -#include <signal.h> -#include <stdint.h> -#include "avdevice.h" - -typedef struct { - AVClass *class; - int video_fd; - int tuner_fd; - int width, height; - uint64_t per_frame; - int standard; - char *framerate; /**< Set by a private option. */ -} VideoData; - - -#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 }; - -uint8_t *video_buf; -size_t video_buf_size; -uint64_t last_frame_time; -volatile sig_atomic_t nsignals; - - -static void catchsignal(int signal) -{ - nsignals++; - return; -} - -static av_cold int bktr_init(const char *video_device, int width, int height, - int format, int *video_fd, int *tuner_fd, int idev, double frequency) -{ - struct meteor_geomet geo; - int h_max; - long ioctl_frequency; - char *arg; - int c; - struct sigaction act = { {0} }, old; - - if (idev < 0 || idev > 4) - { - arg = getenv ("BKTR_DEV"); - if (arg) - idev = atoi (arg); - if (idev < 0 || idev > 4) - idev = 1; - } - - 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; - } - - sigemptyset(&act.sa_mask); - act.sa_handler = catchsignal; - sigaction(SIGUSR1, &act, &old); - - *tuner_fd = open("/dev/tuner0", O_RDONLY); - if (*tuner_fd < 0) - av_log(NULL, AV_LOG_ERROR, "Warning. Tuner not opened, continuing: %s\n", strerror(errno)); - - *video_fd = open(video_device, O_RDONLY); - if (*video_fd < 0) { - av_log(NULL, AV_LOG_ERROR, "%s: %s\n", video_device, strerror(errno)); - return -1; - } - - 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) { - av_log(NULL, AV_LOG_ERROR, "METEORSETGEO: %s\n", strerror(errno)); - return -1; - } - - if (ioctl(*video_fd, BT848SFMT, &c) < 0) { - av_log(NULL, AV_LOG_ERROR, "BT848SFMT: %s\n", strerror(errno)); - return -1; - } - - c = bktr_dev[idev]; - if (ioctl(*video_fd, METEORSINPUT, &c) < 0) { - av_log(NULL, AV_LOG_ERROR, "METEORSINPUT: %s\n", strerror(errno)); - return -1; - } - - video_buf_size = width * height * 12 / 8; - - video_buf = (uint8_t *)mmap((caddr_t)0, video_buf_size, - PROT_READ, MAP_SHARED, *video_fd, (off_t)0); - if (video_buf == MAP_FAILED) { - av_log(NULL, AV_LOG_ERROR, "mmap: %s\n", strerror(errno)); - return -1; - } - - if (frequency != 0.0) { - ioctl_frequency = (unsigned long)(frequency*16); - if (ioctl(*tuner_fd, TVTUNER_SETFREQ, &ioctl_frequency) < 0) - av_log(NULL, AV_LOG_ERROR, "TVTUNER_SETFREQ: %s\n", strerror(errno)); - } - - c = AUDIO_UNMUTE; - if (ioctl(*tuner_fd, BT848_SAUDIO, &c) < 0) - av_log(NULL, AV_LOG_ERROR, "TVTUNER_SAUDIO: %s\n", strerror(errno)); - - c = METEOR_CAP_CONTINOUS; - ioctl(*video_fd, METEORCAPTUR, &c); - - c = SIGUSR1; - ioctl(*video_fd, METEORSSIGNAL, &c); - - return 0; -} - -static void bktr_getframe(uint64_t per_frame) -{ - uint64_t curtime; - - 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) - av_log(NULL, AV_LOG_INFO, - "SLEPT NO signals - %d microseconds late\n", - (int)(av_gettime() - last_frame_time - per_frame)); - } - } - nsignals = 0; - last_frame_time = curtime; -} - - -/* note: we support only one picture read at a time */ -static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt) -{ - VideoData *s = s1->priv_data; - - if (av_new_packet(pkt, video_buf_size) < 0) - return AVERROR(EIO); - - bktr_getframe(s->per_frame); - - pkt->pts = av_gettime(); - memcpy(pkt->data, video_buf, video_buf_size); - - return video_buf_size; -} - -static int grab_read_header(AVFormatContext *s1) -{ - VideoData *s = s1->priv_data; - AVStream *st; - AVRational framerate; - int ret = 0; - - if (!s->framerate) - switch (s->standard) { - case PAL: s->framerate = av_strdup("pal"); break; - case NTSC: s->framerate = av_strdup("ntsc"); break; - case SECAM: s->framerate = av_strdup("25"); break; - default: - av_log(s1, AV_LOG_ERROR, "Unknown standard.\n"); - ret = AVERROR(EINVAL); - goto out; - } - if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) { - av_log(s1, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", s->framerate); - goto out; - } - - st = avformat_new_stream(s1, NULL); - if (!st) { - ret = AVERROR(ENOMEM); - goto out; - } - avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in use */ - - s->per_frame = ((uint64_t)1000000 * framerate.den) / framerate.num; - - st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->pix_fmt = AV_PIX_FMT_YUV420P; - st->codec->codec_id = AV_CODEC_ID_RAWVIDEO; - st->codec->width = s->width; - st->codec->height = s->height; - st->codec->time_base.den = framerate.num; - st->codec->time_base.num = framerate.den; - - - if (bktr_init(s1->filename, s->width, s->height, s->standard, - &s->video_fd, &s->tuner_fd, -1, 0.0) < 0) { - ret = AVERROR(EIO); - goto out; - } - - nsignals = 0; - last_frame_time = 0; - -out: - return ret; -} - -static int grab_read_close(AVFormatContext *s1) -{ - VideoData *s = s1->priv_data; - int c; - - c = METEOR_CAP_STOP_CONT; - ioctl(s->video_fd, METEORCAPTUR, &c); - close(s->video_fd); - - c = AUDIO_MUTE; - ioctl(s->tuner_fd, BT848_SAUDIO, &c); - close(s->tuner_fd); - - munmap((caddr_t)video_buf, video_buf_size); - - return 0; -} - -#define OFFSET(x) offsetof(VideoData, x) -#define DEC AV_OPT_FLAG_DECODING_PARAM -static const AVOption options[] = { - { "standard", "", offsetof(VideoData, standard), AV_OPT_TYPE_INT, {.i64 = VIDEO_FORMAT}, PAL, NTSCJ, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "PAL", "", 0, AV_OPT_TYPE_CONST, {.i64 = PAL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "NTSC", "", 0, AV_OPT_TYPE_CONST, {.i64 = NTSC}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "SECAM", "", 0, AV_OPT_TYPE_CONST, {.i64 = SECAM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "PALN", "", 0, AV_OPT_TYPE_CONST, {.i64 = PALN}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "PALM", "", 0, AV_OPT_TYPE_CONST, {.i64 = PALM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "NTSCJ", "", 0, AV_OPT_TYPE_CONST, {.i64 = NTSCJ}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, - { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = "vga"}, 0, 0, DEC }, - { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, - { NULL }, -}; - -static const AVClass bktr_class = { - .class_name = "BKTR grab interface", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVInputFormat ff_bktr_demuxer = { - .name = "bktr", - .long_name = NULL_IF_CONFIG_SMALL("video grab"), - .priv_data_size = sizeof(VideoData), - .read_header = grab_read_header, - .read_packet = grab_read_packet, - .read_close = grab_read_close, - .flags = AVFMT_NOFILE, - .priv_class = &bktr_class, -}; |