* and
* simple_grab.c Copyright (c) 1999 Roger Hardiman
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#define _BSD_SOURCE 1
-
#include "libavformat/avformat.h"
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.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>
#include <strings.h>
typedef struct {
+ AVClass *class;
int video_fd;
int tuner_fd;
int width, height;
- int frame_rate;
- int frame_rate_base;
uint64_t per_frame;
+ int standard;
+ char *video_size; /**< String describing video size, set by a private option. */
+ char *framerate; /**< Set by a private option. */
} VideoData;
VideoData *s = s1->priv_data;
AVStream *st;
int width, height;
- int frame_rate;
- int frame_rate_base;
- int format = -1;
+ AVRational framerate;
+ int ret = 0;
- if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0)
- return -1;
+#if FF_API_FORMAT_PARAMETERS
+ if (ap->standard) {
+ if (!strcasecmp(ap->standard, "pal"))
+ s->standard = PAL;
+ else if (!strcasecmp(ap->standard, "secam"))
+ s->standard = SECAM;
+ else if (!strcasecmp(ap->standard, "ntsc"))
+ s->standard = NTSC;
+ }
+#endif
+
+ if ((ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
+ av_log(s1, AV_LOG_ERROR, "Could not parse video size '%s'.\n", s->video_size);
+ goto out;
+ }
- width = ap->width;
- height = ap->height;
- frame_rate = ap->time_base.den;
- frame_rate_base = ap->time_base.num;
+ 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;
+ }
+#if FF_API_FORMAT_PARAMETERS
+ if (ap->width > 0)
+ width = ap->width;
+ if (ap->height > 0)
+ height = ap->height;
+ if (ap->time_base.num)
+ framerate = (AVRational){ap->time_base.den, ap->time_base.num};
+#endif
st = av_new_stream(s1, 0);
- if (!st)
- return AVERROR(ENOMEM);
+ if (!st) {
+ ret = AVERROR(ENOMEM);
+ goto out;
+ }
av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in use */
s->width = width;
s->height = height;
- s->frame_rate = frame_rate;
- s->frame_rate_base = frame_rate_base;
- s->per_frame = ((uint64_t)1000000 * s->frame_rate_base) / s->frame_rate;
+ s->per_frame = ((uint64_t)1000000 * framerate.den) / framerate.num;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->pix_fmt = PIX_FMT_YUV420P;
st->codec->codec_id = CODEC_ID_RAWVIDEO;
st->codec->width = width;
st->codec->height = height;
- st->codec->time_base.den = frame_rate;
- st->codec->time_base.num = frame_rate_base;
+ st->codec->time_base.den = framerate.num;
+ st->codec->time_base.num = framerate.den;
- if (ap->standard) {
- if (!strcasecmp(ap->standard, "pal"))
- format = PAL;
- else if (!strcasecmp(ap->standard, "secam"))
- format = SECAM;
- else if (!strcasecmp(ap->standard, "ntsc"))
- format = NTSC;
- }
- if (bktr_init(s1->filename, width, height, format,
- &(s->video_fd), &(s->tuner_fd), -1, 0.0) < 0)
- return AVERROR(EIO);
+ if (bktr_init(s1->filename, width, height, s->standard,
+ &(s->video_fd), &(s->tuner_fd), -1, 0.0) < 0) {
+ ret = AVERROR(EIO);
+ goto out;
+ }
nsignals = 0;
last_frame_time = 0;
- return 0;
+out:
+ return ret;
}
static int grab_read_close(AVFormatContext *s1)
return 0;
}
-AVInputFormat bktr_demuxer = {
+#define OFFSET(x) offsetof(VideoData, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+ { "standard", "", offsetof(VideoData, standard), FF_OPT_TYPE_INT, {.dbl = VIDEO_FORMAT}, PAL, NTSCJ, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "PAL", "", 0, FF_OPT_TYPE_CONST, {.dbl = PAL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "NTSC", "", 0, FF_OPT_TYPE_CONST, {.dbl = NTSC}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "SECAM", "", 0, FF_OPT_TYPE_CONST, {.dbl = SECAM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "PALN", "", 0, FF_OPT_TYPE_CONST, {.dbl = PALN}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "PALM", "", 0, FF_OPT_TYPE_CONST, {.dbl = PALM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "NTSCJ", "", 0, FF_OPT_TYPE_CONST, {.dbl = NTSCJ}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
+ { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = "vga"}, 0, 0, DEC },
+ { "framerate", "", OFFSET(framerate), FF_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 = {
"bktr",
NULL_IF_CONFIG_SMALL("video grab"),
sizeof(VideoData),
grab_read_packet,
grab_read_close,
.flags = AVFMT_NOFILE,
+ .priv_class = &bktr_class,
};
projects / ffmpeg / blobdiff