2006-02-01 11:31:33 +00:00
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/*
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2009-01-19 15:46:40 +00:00
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* Copyright (c) 2000,2001 Fabrice Bellard
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* Copyright (c) 2006 Luca Abeni
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2006-02-01 11:31:33 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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2006-02-01 11:31:33 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2006-02-01 11:31:33 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2006-02-01 11:31:33 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2006-10-07 15:30:46 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-02-01 11:31:33 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2008-03-20 19:07:24 +00:00
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2011-05-28 18:59:27 +00:00
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/**
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* @file
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* Video4Linux2 grab interface
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*
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* Part of this file is based on the V4L2 video capture example
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* (http://v4l2spec.bytesex.org/v4l2spec/capture.c)
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*
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* Thanks to Michael Niedermayer for providing the mapping between
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* V4L2_PIX_FMT_* and PIX_FMT_*
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*/
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2008-08-19 21:20:39 +00:00
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#undef __STRICT_ANSI__ //workaround due to broken kernel headers
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2008-03-20 19:07:24 +00:00
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#include "config.h"
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2011-11-29 18:28:15 +00:00
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#include "libavformat/internal.h"
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2006-02-01 11:31:33 +00:00
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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2009-01-13 23:44:16 +00:00
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#if HAVE_SYS_VIDEOIO_H
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2008-09-21 22:47:52 +00:00
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#include <sys/videoio.h>
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#else
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2011-12-15 20:21:54 +00:00
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#if HAVE_ASM_TYPES_H
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2006-05-30 13:04:18 +00:00
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#include <asm/types.h>
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2011-12-15 20:21:54 +00:00
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#endif
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2006-05-30 13:04:18 +00:00
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#include <linux/videodev2.h>
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2008-09-21 22:47:52 +00:00
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#endif
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2006-02-01 11:31:33 +00:00
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#include <time.h>
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2011-02-07 13:37:08 +00:00
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#include "libavutil/imgutils.h"
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2011-05-23 19:21:59 +00:00
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#include "libavutil/log.h"
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#include "libavutil/opt.h"
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2011-05-26 17:11:25 +00:00
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#include "avdevice.h"
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2012-03-03 14:56:11 +00:00
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#include "timefilter.h"
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2011-05-24 05:43:01 +00:00
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#include "libavutil/parseutils.h"
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2011-05-24 07:02:11 +00:00
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#include "libavutil/pixdesc.h"
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2011-11-02 19:17:25 +00:00
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#include "libavutil/avstring.h"
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2006-02-01 11:31:33 +00:00
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2011-10-30 02:21:55 +00:00
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#if CONFIG_LIBV4L2
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#include <libv4l2.h>
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#else
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#define v4l2_open open
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#define v4l2_close close
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#define v4l2_dup dup
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#define v4l2_ioctl ioctl
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#define v4l2_read read
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#define v4l2_mmap mmap
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#define v4l2_munmap munmap
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#endif
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2006-02-01 11:31:33 +00:00
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static const int desired_video_buffers = 256;
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2011-12-27 05:31:41 +00:00
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#define V4L_ALLFORMATS 3
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#define V4L_RAWFORMATS 1
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#define V4L_COMPFORMATS 2
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2006-02-01 11:31:33 +00:00
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2012-03-03 14:56:11 +00:00
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/**
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* Return timestamps to the user exactly as returned by the kernel
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*/
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#define V4L_TS_DEFAULT 0
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/**
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* Autodetect the kind of timestamps returned by the kernel and convert to
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* absolute (wall clock) timestamps.
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*/
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#define V4L_TS_ABS 1
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/**
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* Assume kernel timestamps are from the monotonic clock and convert to
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* absolute timestamps.
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*/
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#define V4L_TS_MONO2ABS 2
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/**
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* Once the kind of timestamps returned by the kernel have been detected,
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* the value of the timefilter (NULL or not) determines whether a conversion
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* takes place.
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*/
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#define V4L_TS_CONVERT_READY V4L_TS_DEFAULT
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2006-02-01 11:31:33 +00:00
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struct video_data {
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2011-05-23 19:21:59 +00:00
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AVClass *class;
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2006-02-01 11:31:33 +00:00
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int fd;
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int frame_format; /* V4L2_PIX_FMT_* */
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int width, height;
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int frame_size;
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2011-11-21 16:03:46 +00:00
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int interlaced;
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2006-02-01 11:31:33 +00:00
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int top_field_first;
|
2012-03-03 14:56:11 +00:00
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int ts_mode;
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TimeFilter *timefilter;
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int64_t last_time_m;
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2006-02-01 11:31:33 +00:00
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int buffers;
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void **buf_start;
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unsigned int *buf_len;
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2011-05-23 19:21:59 +00:00
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char *standard;
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2011-05-23 19:53:44 +00:00
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int channel;
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2011-05-24 07:02:11 +00:00
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char *pixel_format; /**< Set by a private option. */
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2011-12-27 05:31:41 +00:00
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int list_format; /**< Set by a private option. */
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2011-05-24 19:16:47 +00:00
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char *framerate; /**< Set by a private option. */
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2006-02-01 11:31:33 +00:00
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};
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|
2007-02-14 13:25:24 +00:00
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struct buff_data {
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int index;
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int fd;
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};
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|
2006-02-01 11:31:33 +00:00
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struct fmt_map {
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enum PixelFormat ff_fmt;
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2009-12-14 10:33:24 +00:00
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enum CodecID codec_id;
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2009-12-14 10:31:29 +00:00
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uint32_t v4l2_fmt;
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2006-02-01 11:31:33 +00:00
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};
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static struct fmt_map fmt_conversion_table[] = {
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2010-09-12 19:44:45 +00:00
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//ff_fmt codec_id v4l2_fmt
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{ PIX_FMT_YUV420P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420 },
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2012-02-05 19:06:12 +00:00
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{ PIX_FMT_YUV420P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU420 },
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2010-09-12 19:44:45 +00:00
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{ PIX_FMT_YUV422P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
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{ PIX_FMT_YUYV422, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV },
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{ PIX_FMT_UYVY422, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY },
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{ PIX_FMT_YUV411P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
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{ PIX_FMT_YUV410P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410 },
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2012-02-01 16:58:42 +00:00
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{ PIX_FMT_RGB555LE,CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555 },
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2012-02-01 17:04:17 +00:00
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{ PIX_FMT_RGB555BE,CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555X },
|
2012-02-01 16:58:42 +00:00
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{ PIX_FMT_RGB565LE,CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565 },
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2012-02-01 17:04:17 +00:00
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{ PIX_FMT_RGB565BE,CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565X },
|
2010-09-12 19:44:45 +00:00
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{ PIX_FMT_BGR24, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24 },
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{ PIX_FMT_RGB24, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24 },
|
2012-02-01 17:00:24 +00:00
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{ PIX_FMT_BGR0, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32 },
|
2012-02-01 17:04:17 +00:00
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{ PIX_FMT_0RGB, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB32 },
|
2010-09-12 19:44:45 +00:00
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{ PIX_FMT_GRAY8, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY },
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{ PIX_FMT_NV12, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 },
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{ PIX_FMT_NONE, CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG },
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{ PIX_FMT_NONE, CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG },
|
2006-02-01 11:31:33 +00:00
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};
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|
2011-12-27 05:27:41 +00:00
|
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static int device_open(AVFormatContext *ctx)
|
2006-02-01 11:31:33 +00:00
|
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{
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struct v4l2_capability cap;
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int fd;
|
2011-10-30 02:21:55 +00:00
|
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|
#if CONFIG_LIBV4L2
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int fd_libv4l;
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#endif
|
2010-05-01 08:24:24 +00:00
|
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int res, err;
|
2007-07-06 07:18:25 +00:00
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int flags = O_RDWR;
|
2006-02-01 11:31:33 +00:00
|
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|
2007-07-06 07:18:25 +00:00
|
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|
if (ctx->flags & AVFMT_FLAG_NONBLOCK) {
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flags |= O_NONBLOCK;
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|
}
|
2011-12-27 04:37:58 +00:00
|
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|
2011-10-30 02:21:55 +00:00
|
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fd = v4l2_open(ctx->filename, flags, 0);
|
2006-02-01 11:31:33 +00:00
|
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|
if (fd < 0) {
|
2011-12-27 05:27:41 +00:00
|
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|
err = errno;
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|
|
|
|
2007-02-12 13:38:14 +00:00
|
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|
av_log(ctx, AV_LOG_ERROR, "Cannot open video device %s : %s\n",
|
2011-12-27 05:27:41 +00:00
|
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|
ctx->filename, strerror(err));
|
2006-02-01 11:31:33 +00:00
|
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|
2011-12-27 05:27:41 +00:00
|
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|
return AVERROR(err);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
2011-10-30 02:21:55 +00:00
|
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|
#if CONFIG_LIBV4L2
|
|
|
|
fd_libv4l = v4l2_fd_open(fd, 0);
|
|
|
|
if (fd < 0) {
|
|
|
|
err = AVERROR(errno);
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Cannot open video device with libv4l neither %s : %s\n",
|
|
|
|
ctx->filename, strerror(errno));
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|
|
return err;
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|
|
|
}
|
|
|
|
fd = fd_libv4l;
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|
|
#endif
|
2006-02-01 11:31:33 +00:00
|
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|
|
2011-10-30 02:21:55 +00:00
|
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|
res = v4l2_ioctl(fd, VIDIOC_QUERYCAP, &cap);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
2011-12-27 05:27:41 +00:00
|
|
|
err = errno;
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYCAP): %s\n",
|
2011-12-27 05:27:41 +00:00
|
|
|
strerror(err));
|
2006-02-01 11:31:33 +00:00
|
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|
2011-12-27 05:27:41 +00:00
|
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|
goto fail;
|
2006-02-01 11:31:33 +00:00
|
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}
|
2011-12-27 04:37:58 +00:00
|
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|
|
2011-12-27 05:27:41 +00:00
|
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|
av_log(ctx, AV_LOG_VERBOSE, "[%d]Capabilities: %x\n",
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|
|
|
fd, cap.capabilities);
|
|
|
|
|
|
|
|
if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Not a video capture device.\n");
|
|
|
|
err = ENODEV;
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-12-27 05:27:41 +00:00
|
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|
goto fail;
|
2006-02-01 11:31:33 +00:00
|
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}
|
2011-12-27 04:37:58 +00:00
|
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|
|
2011-12-27 05:27:41 +00:00
|
|
|
if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
|
|
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
|
|
"The device does not support the streaming I/O method.\n");
|
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|
|
err = ENOSYS;
|
|
|
|
|
|
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|
goto fail;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return fd;
|
2011-12-27 05:27:41 +00:00
|
|
|
|
|
|
|
fail:
|
2012-01-05 01:03:12 +00:00
|
|
|
v4l2_close(fd);
|
2011-12-27 05:27:41 +00:00
|
|
|
return AVERROR(err);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
static int device_init(AVFormatContext *ctx, int *width, int *height,
|
|
|
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uint32_t pix_fmt)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
2007-02-12 13:38:14 +00:00
|
|
|
struct video_data *s = ctx->priv_data;
|
|
|
|
int fd = s->fd;
|
2012-01-07 09:59:35 +00:00
|
|
|
struct v4l2_format fmt = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };
|
2011-12-27 04:37:58 +00:00
|
|
|
struct v4l2_pix_format *pix = &fmt.fmt.pix;
|
|
|
|
|
2006-02-28 11:28:09 +00:00
|
|
|
int res;
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
pix->width = *width;
|
|
|
|
pix->height = *height;
|
|
|
|
pix->pixelformat = pix_fmt;
|
|
|
|
pix->field = V4L2_FIELD_ANY;
|
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(fd, VIDIOC_S_FMT, &fmt);
|
2011-12-27 04:37:58 +00:00
|
|
|
|
2006-02-28 11:28:09 +00:00
|
|
|
if ((*width != fmt.fmt.pix.width) || (*height != fmt.fmt.pix.height)) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_INFO,
|
|
|
|
"The V4L2 driver changed the video from %dx%d to %dx%d\n",
|
|
|
|
*width, *height, fmt.fmt.pix.width, fmt.fmt.pix.height);
|
2006-02-28 11:28:09 +00:00
|
|
|
*width = fmt.fmt.pix.width;
|
|
|
|
*height = fmt.fmt.pix.height;
|
|
|
|
}
|
|
|
|
|
2008-10-21 07:59:41 +00:00
|
|
|
if (pix_fmt != fmt.fmt.pix.pixelformat) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_DEBUG,
|
|
|
|
"The V4L2 driver changed the pixel format "
|
|
|
|
"from 0x%08X to 0x%08X\n",
|
|
|
|
pix_fmt, fmt.fmt.pix.pixelformat);
|
2008-10-21 07:59:41 +00:00
|
|
|
res = -1;
|
|
|
|
}
|
|
|
|
|
2011-11-21 16:03:46 +00:00
|
|
|
if (fmt.fmt.pix.field == V4L2_FIELD_INTERLACED) {
|
|
|
|
av_log(ctx, AV_LOG_DEBUG, "The V4L2 driver using the interlaced mode");
|
|
|
|
s->interlaced = 1;
|
|
|
|
}
|
|
|
|
|
2006-02-28 11:28:09 +00:00
|
|
|
return res;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int first_field(int fd)
|
|
|
|
{
|
|
|
|
int res;
|
|
|
|
v4l2_std_id std;
|
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(fd, VIDIOC_G_STD, &std);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (std & V4L2_STD_NTSC) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2009-12-14 10:34:31 +00:00
|
|
|
static uint32_t fmt_ff2v4l(enum PixelFormat pix_fmt, enum CodecID codec_id)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2008-10-21 21:40:24 +00:00
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
|
2009-12-14 10:34:31 +00:00
|
|
|
if ((codec_id == CODEC_ID_NONE ||
|
|
|
|
fmt_conversion_table[i].codec_id == codec_id) &&
|
|
|
|
(pix_fmt == PIX_FMT_NONE ||
|
|
|
|
fmt_conversion_table[i].ff_fmt == pix_fmt)) {
|
2006-02-01 11:31:33 +00:00
|
|
|
return fmt_conversion_table[i].v4l2_fmt;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-12-14 10:34:31 +00:00
|
|
|
static enum PixelFormat fmt_v4l2ff(uint32_t v4l2_fmt, enum CodecID codec_id)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2008-10-21 21:40:24 +00:00
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
|
2009-12-14 10:34:31 +00:00
|
|
|
if (fmt_conversion_table[i].v4l2_fmt == v4l2_fmt &&
|
|
|
|
fmt_conversion_table[i].codec_id == codec_id) {
|
2006-02-01 11:31:33 +00:00
|
|
|
return fmt_conversion_table[i].ff_fmt;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-05-11 22:28:43 +00:00
|
|
|
return PIX_FMT_NONE;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
2009-12-14 10:34:31 +00:00
|
|
|
static enum CodecID fmt_v4l2codec(uint32_t v4l2_fmt)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
|
|
|
|
if (fmt_conversion_table[i].v4l2_fmt == v4l2_fmt) {
|
|
|
|
return fmt_conversion_table[i].codec_id;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return CODEC_ID_NONE;
|
|
|
|
}
|
|
|
|
|
2011-12-27 05:31:41 +00:00
|
|
|
#if HAVE_STRUCT_V4L2_FRMIVALENUM_DISCRETE
|
|
|
|
static void list_framesizes(AVFormatContext *ctx, int fd, uint32_t pixelformat)
|
|
|
|
{
|
|
|
|
struct v4l2_frmsizeenum vfse = { .pixel_format = pixelformat };
|
|
|
|
|
|
|
|
while(!ioctl(fd, VIDIOC_ENUM_FRAMESIZES, &vfse)) {
|
|
|
|
switch (vfse.type) {
|
|
|
|
case V4L2_FRMSIZE_TYPE_DISCRETE:
|
|
|
|
av_log(ctx, AV_LOG_INFO, " %ux%u",
|
|
|
|
vfse.discrete.width, vfse.discrete.height);
|
|
|
|
break;
|
|
|
|
case V4L2_FRMSIZE_TYPE_CONTINUOUS:
|
|
|
|
case V4L2_FRMSIZE_TYPE_STEPWISE:
|
|
|
|
av_log(ctx, AV_LOG_INFO, " {%u-%u, %u}x{%u-%u, %u}",
|
|
|
|
vfse.stepwise.min_width,
|
|
|
|
vfse.stepwise.max_width,
|
|
|
|
vfse.stepwise.step_width,
|
|
|
|
vfse.stepwise.min_height,
|
|
|
|
vfse.stepwise.max_height,
|
|
|
|
vfse.stepwise.step_height);
|
|
|
|
}
|
|
|
|
vfse.index++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static void list_formats(AVFormatContext *ctx, int fd, int type)
|
|
|
|
{
|
|
|
|
struct v4l2_fmtdesc vfd = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };
|
|
|
|
|
|
|
|
while(!ioctl(fd, VIDIOC_ENUM_FMT, &vfd)) {
|
|
|
|
enum CodecID codec_id = fmt_v4l2codec(vfd.pixelformat);
|
|
|
|
enum PixelFormat pix_fmt = fmt_v4l2ff(vfd.pixelformat, codec_id);
|
|
|
|
|
|
|
|
vfd.index++;
|
|
|
|
|
|
|
|
if (!(vfd.flags & V4L2_FMT_FLAG_COMPRESSED) &&
|
|
|
|
type & V4L_RAWFORMATS) {
|
|
|
|
const char *fmt_name = av_get_pix_fmt_name(pix_fmt);
|
|
|
|
av_log(ctx, AV_LOG_INFO, "R : %9s : %20s :",
|
|
|
|
fmt_name ? fmt_name : "Unsupported",
|
|
|
|
vfd.description);
|
|
|
|
} else if (vfd.flags & V4L2_FMT_FLAG_COMPRESSED &&
|
|
|
|
type & V4L_COMPFORMATS) {
|
|
|
|
AVCodec *codec = avcodec_find_encoder(codec_id);
|
|
|
|
av_log(ctx, AV_LOG_INFO, "C : %9s : %20s :",
|
|
|
|
codec ? codec->name : "Unsupported",
|
|
|
|
vfd.description);
|
|
|
|
} else {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2012-01-04 19:29:57 +00:00
|
|
|
#ifdef V4L2_FMT_FLAG_EMULATED
|
2011-12-27 05:31:41 +00:00
|
|
|
if (vfd.flags & V4L2_FMT_FLAG_EMULATED) {
|
|
|
|
av_log(ctx, AV_LOG_WARNING, "%s", "Emulated");
|
|
|
|
continue;
|
|
|
|
}
|
2012-01-04 19:29:57 +00:00
|
|
|
#endif
|
2011-12-27 05:31:41 +00:00
|
|
|
#if HAVE_STRUCT_V4L2_FRMIVALENUM_DISCRETE
|
|
|
|
list_framesizes(ctx, fd, vfd.pixelformat);
|
|
|
|
#endif
|
|
|
|
av_log(ctx, AV_LOG_INFO, "\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-02-12 13:38:14 +00:00
|
|
|
static int mmap_init(AVFormatContext *ctx)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
|
|
|
int i, res;
|
2012-01-07 09:59:35 +00:00
|
|
|
struct video_data *s = ctx->priv_data;
|
|
|
|
struct v4l2_requestbuffers req = {
|
|
|
|
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
|
|
|
.count = desired_video_buffers,
|
|
|
|
.memory = V4L2_MEMORY_MMAP
|
|
|
|
};
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(s->fd, VIDIOC_REQBUFS, &req);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
|
|
|
if (errno == EINVAL) {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "Device does not support mmap\n");
|
2006-02-01 11:31:33 +00:00
|
|
|
} else {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_REQBUFS)\n");
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(errno);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (req.count < 2) {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "Insufficient buffer memory\n");
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
s->buffers = req.count;
|
|
|
|
s->buf_start = av_malloc(sizeof(void *) * s->buffers);
|
|
|
|
if (s->buf_start == NULL) {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "Cannot allocate buffer pointers\n");
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
s->buf_len = av_malloc(sizeof(unsigned int) * s->buffers);
|
|
|
|
if (s->buf_len == NULL) {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "Cannot allocate buffer sizes\n");
|
2006-02-01 11:31:33 +00:00
|
|
|
av_free(s->buf_start);
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < req.count; i++) {
|
2012-01-07 09:59:35 +00:00
|
|
|
struct v4l2_buffer buf = {
|
|
|
|
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
|
|
|
.index = i,
|
|
|
|
.memory = V4L2_MEMORY_MMAP
|
|
|
|
};
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(s->fd, VIDIOC_QUERYBUF, &buf);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYBUF)\n");
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(errno);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
s->buf_len[i] = buf.length;
|
2009-12-14 10:34:31 +00:00
|
|
|
if (s->frame_size > 0 && s->buf_len[i] < s->frame_size) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
|
|
"Buffer len [%d] = %d != %d\n",
|
|
|
|
i, s->buf_len[i], s->frame_size);
|
2006-02-01 11:31:33 +00:00
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|
2011-10-30 02:21:55 +00:00
|
|
|
s->buf_start[i] = v4l2_mmap(NULL, buf.length,
|
2011-12-27 04:37:58 +00:00
|
|
|
PROT_READ | PROT_WRITE, MAP_SHARED,
|
|
|
|
s->fd, buf.m.offset);
|
|
|
|
|
2006-02-01 11:31:33 +00:00
|
|
|
if (s->buf_start[i] == MAP_FAILED) {
|
2007-02-12 13:38:14 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(errno);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-02-14 13:25:24 +00:00
|
|
|
static void mmap_release_buffer(AVPacket *pkt)
|
|
|
|
{
|
2012-01-07 09:59:35 +00:00
|
|
|
struct v4l2_buffer buf = { 0 };
|
2007-02-14 13:25:24 +00:00
|
|
|
int res, fd;
|
|
|
|
struct buff_data *buf_descriptor = pkt->priv;
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
if (pkt->data == NULL)
|
|
|
|
return;
|
2009-01-30 12:41:44 +00:00
|
|
|
|
2007-02-14 13:25:24 +00:00
|
|
|
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
|
|
buf.memory = V4L2_MEMORY_MMAP;
|
|
|
|
buf.index = buf_descriptor->index;
|
|
|
|
fd = buf_descriptor->fd;
|
|
|
|
av_free(buf_descriptor);
|
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(fd, VIDIOC_QBUF, &buf);
|
2011-12-27 04:37:58 +00:00
|
|
|
if (res < 0)
|
|
|
|
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n",
|
|
|
|
strerror(errno));
|
|
|
|
|
2007-02-14 13:25:24 +00:00
|
|
|
pkt->data = NULL;
|
|
|
|
pkt->size = 0;
|
|
|
|
}
|
|
|
|
|
2012-03-03 14:56:11 +00:00
|
|
|
#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
|
|
|
|
static int64_t av_gettime_monotonic(void)
|
|
|
|
{
|
|
|
|
struct timespec tv;
|
|
|
|
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &tv);
|
|
|
|
return (int64_t)tv.tv_sec * 1000000 + tv.tv_nsec / 1000;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static int init_convert_timestamp(AVFormatContext *ctx, int64_t ts)
|
|
|
|
{
|
|
|
|
struct video_data *s = ctx->priv_data;
|
|
|
|
int64_t now;
|
|
|
|
|
|
|
|
now = av_gettime();
|
|
|
|
if (s->ts_mode == V4L_TS_ABS &&
|
|
|
|
ts <= now + 1 * AV_TIME_BASE && ts >= now - 10 * AV_TIME_BASE) {
|
|
|
|
av_log(ctx, AV_LOG_INFO, "Detected absolute timestamps\n");
|
|
|
|
s->ts_mode = V4L_TS_CONVERT_READY;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
|
|
|
|
now = av_gettime_monotonic();
|
|
|
|
if (s->ts_mode == V4L_TS_MONO2ABS ||
|
|
|
|
(ts <= now + 1 * AV_TIME_BASE && ts >= now - 10 * AV_TIME_BASE)) {
|
|
|
|
int64_t period = av_rescale_q(1, ctx->streams[0]->codec->time_base,
|
|
|
|
AV_TIME_BASE_Q);
|
|
|
|
av_log(ctx, AV_LOG_INFO, "Detected monotonic timestamps, converting\n");
|
|
|
|
/* microseconds instead of seconds, MHz instead of Hz */
|
|
|
|
s->timefilter = ff_timefilter_new(1, period, 1.0E-6);
|
|
|
|
s->ts_mode = V4L_TS_CONVERT_READY;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Unknown timestamps\n");
|
|
|
|
return AVERROR(EIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int convert_timestamp(AVFormatContext *ctx, int64_t *ts)
|
|
|
|
{
|
|
|
|
struct video_data *s = ctx->priv_data;
|
|
|
|
|
|
|
|
if (s->ts_mode) {
|
|
|
|
int r = init_convert_timestamp(ctx, *ts);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
|
|
|
|
if (s->timefilter) {
|
|
|
|
int64_t nowa = av_gettime();
|
|
|
|
int64_t nowm = av_gettime_monotonic();
|
|
|
|
ff_timefilter_update(s->timefilter, nowa, nowm - s->last_time_m);
|
|
|
|
s->last_time_m = nowm;
|
|
|
|
*ts = ff_timefilter_eval(s->timefilter, *ts - nowm);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-02-14 13:25:24 +00:00
|
|
|
static int mmap_read_frame(AVFormatContext *ctx, AVPacket *pkt)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
2007-02-12 13:38:14 +00:00
|
|
|
struct video_data *s = ctx->priv_data;
|
2012-01-07 09:59:35 +00:00
|
|
|
struct v4l2_buffer buf = {
|
|
|
|
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
|
|
|
.memory = V4L2_MEMORY_MMAP
|
|
|
|
};
|
2007-02-14 13:25:24 +00:00
|
|
|
struct buff_data *buf_descriptor;
|
2006-02-01 11:31:33 +00:00
|
|
|
int res;
|
|
|
|
|
|
|
|
/* FIXME: Some special treatment might be needed in case of loss of signal... */
|
2011-10-30 02:21:55 +00:00
|
|
|
while ((res = v4l2_ioctl(s->fd, VIDIOC_DQBUF, &buf)) < 0 && (errno == EINTR));
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
2007-07-06 07:18:25 +00:00
|
|
|
if (errno == EAGAIN) {
|
|
|
|
pkt->size = 0;
|
|
|
|
return AVERROR(EAGAIN);
|
|
|
|
}
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_DQBUF): %s\n",
|
|
|
|
strerror(errno));
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(errno);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
2011-05-28 19:04:29 +00:00
|
|
|
assert(buf.index < s->buffers);
|
2009-12-14 10:34:31 +00:00
|
|
|
if (s->frame_size > 0 && buf.bytesused != s->frame_size) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
|
|
"The v4l2 frame is %d bytes, but %d bytes are expected\n",
|
|
|
|
buf.bytesused, s->frame_size);
|
2006-10-22 09:56:08 +00:00
|
|
|
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2006-10-22 09:56:08 +00:00
|
|
|
}
|
|
|
|
|
2006-02-01 11:31:33 +00:00
|
|
|
/* Image is at s->buff_start[buf.index] */
|
2007-02-14 13:25:24 +00:00
|
|
|
pkt->data= s->buf_start[buf.index];
|
|
|
|
pkt->size = buf.bytesused;
|
|
|
|
pkt->pts = buf.timestamp.tv_sec * INT64_C(1000000) + buf.timestamp.tv_usec;
|
2012-03-03 14:56:11 +00:00
|
|
|
res = convert_timestamp(ctx, &pkt->pts);
|
|
|
|
if (res < 0)
|
|
|
|
return res;
|
2007-02-14 13:25:24 +00:00
|
|
|
pkt->destruct = mmap_release_buffer;
|
|
|
|
buf_descriptor = av_malloc(sizeof(struct buff_data));
|
|
|
|
if (buf_descriptor == NULL) {
|
|
|
|
/* Something went wrong... Since av_malloc() failed, we cannot even
|
|
|
|
* allocate a buffer for memcopying into it
|
|
|
|
*/
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Failed to allocate a buffer descriptor\n");
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(s->fd, VIDIOC_QBUF, &buf);
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
2007-02-14 13:25:24 +00:00
|
|
|
buf_descriptor->fd = s->fd;
|
|
|
|
buf_descriptor->index = buf.index;
|
|
|
|
pkt->priv = buf_descriptor;
|
2006-02-01 11:31:33 +00:00
|
|
|
|
|
|
|
return s->buf_len[buf.index];
|
|
|
|
}
|
|
|
|
|
2007-02-12 13:38:14 +00:00
|
|
|
static int mmap_start(AVFormatContext *ctx)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
2007-02-12 13:38:14 +00:00
|
|
|
struct video_data *s = ctx->priv_data;
|
2006-02-01 11:31:33 +00:00
|
|
|
enum v4l2_buf_type type;
|
|
|
|
int i, res;
|
|
|
|
|
|
|
|
for (i = 0; i < s->buffers; i++) {
|
2012-01-07 09:59:35 +00:00
|
|
|
struct v4l2_buffer buf = {
|
|
|
|
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
|
|
|
.index = i,
|
|
|
|
.memory = V4L2_MEMORY_MMAP
|
|
|
|
};
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(s->fd, VIDIOC_QBUF, &buf);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n",
|
|
|
|
strerror(errno));
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(errno);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
2011-10-30 02:21:55 +00:00
|
|
|
res = v4l2_ioctl(s->fd, VIDIOC_STREAMON, &type);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (res < 0) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_STREAMON): %s\n",
|
|
|
|
strerror(errno));
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2010-04-26 19:40:15 +00:00
|
|
|
return AVERROR(errno);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void mmap_close(struct video_data *s)
|
|
|
|
{
|
|
|
|
enum v4l2_buf_type type;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
|
|
/* We do not check for the result, because we could
|
|
|
|
* not do anything about it anyway...
|
|
|
|
*/
|
2011-10-30 02:21:55 +00:00
|
|
|
v4l2_ioctl(s->fd, VIDIOC_STREAMOFF, &type);
|
2006-02-01 11:31:33 +00:00
|
|
|
for (i = 0; i < s->buffers; i++) {
|
2011-10-30 02:21:55 +00:00
|
|
|
v4l2_munmap(s->buf_start[i], s->buf_len[i]);
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
av_free(s->buf_start);
|
|
|
|
av_free(s->buf_len);
|
|
|
|
}
|
|
|
|
|
2012-01-12 12:20:36 +00:00
|
|
|
static int v4l2_set_parameters(AVFormatContext *s1)
|
2007-03-29 06:32:54 +00:00
|
|
|
{
|
|
|
|
struct video_data *s = s1->priv_data;
|
2012-01-07 09:59:35 +00:00
|
|
|
struct v4l2_input input = { 0 };
|
|
|
|
struct v4l2_standard standard = { 0 };
|
2011-01-05 14:15:13 +00:00
|
|
|
struct v4l2_streamparm streamparm = { 0 };
|
|
|
|
struct v4l2_fract *tpf = &streamparm.parm.capture.timeperframe;
|
2012-01-07 09:59:35 +00:00
|
|
|
AVRational framerate_q = { 0 };
|
2011-05-28 19:14:06 +00:00
|
|
|
int i, ret;
|
2007-03-29 06:32:54 +00:00
|
|
|
|
2011-01-05 14:15:13 +00:00
|
|
|
streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
if (s->framerate &&
|
|
|
|
(ret = av_parse_video_rate(&framerate_q, s->framerate)) < 0) {
|
|
|
|
av_log(s1, AV_LOG_ERROR, "Could not parse framerate '%s'.\n",
|
|
|
|
s->framerate);
|
2011-05-24 19:16:47 +00:00
|
|
|
return ret;
|
|
|
|
}
|
2007-03-29 06:32:54 +00:00
|
|
|
|
2011-05-24 05:23:29 +00:00
|
|
|
/* set tv video input */
|
|
|
|
input.index = s->channel;
|
2011-10-30 02:21:55 +00:00
|
|
|
if (v4l2_ioctl(s->fd, VIDIOC_ENUMINPUT, &input) < 0) {
|
2011-05-24 05:23:29 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR, "The V4L2 driver ioctl enum input failed:\n");
|
|
|
|
return AVERROR(EIO);
|
|
|
|
}
|
2007-03-29 06:32:54 +00:00
|
|
|
|
2011-05-24 05:23:29 +00:00
|
|
|
av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set input_id: %d, input: %s\n",
|
|
|
|
s->channel, input.name);
|
2011-10-30 02:21:55 +00:00
|
|
|
if (v4l2_ioctl(s->fd, VIDIOC_S_INPUT, &input.index) < 0) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR,
|
|
|
|
"The V4L2 driver ioctl set input(%d) failed\n",
|
2011-05-24 05:23:29 +00:00
|
|
|
s->channel);
|
|
|
|
return AVERROR(EIO);
|
2007-05-10 10:14:42 +00:00
|
|
|
}
|
2007-03-29 06:32:54 +00:00
|
|
|
|
2011-05-23 19:21:59 +00:00
|
|
|
if (s->standard) {
|
2007-05-10 10:15:15 +00:00
|
|
|
av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set standard: %s\n",
|
2011-05-23 19:21:59 +00:00
|
|
|
s->standard);
|
2007-05-10 10:15:15 +00:00
|
|
|
/* set tv standard */
|
|
|
|
for(i=0;;i++) {
|
|
|
|
standard.index = i;
|
2011-10-30 02:21:55 +00:00
|
|
|
ret = v4l2_ioctl(s->fd, VIDIOC_ENUMSTD, &standard);
|
2011-11-02 19:17:25 +00:00
|
|
|
if (ret < 0 || !av_strcasecmp(standard.name, s->standard))
|
2007-05-10 10:15:15 +00:00
|
|
|
break;
|
2011-05-28 19:14:06 +00:00
|
|
|
}
|
|
|
|
if (ret < 0) {
|
|
|
|
av_log(s1, AV_LOG_ERROR, "Unknown standard '%s'\n", s->standard);
|
|
|
|
return ret;
|
2007-05-10 10:15:15 +00:00
|
|
|
}
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_DEBUG,
|
|
|
|
"The V4L2 driver set standard: %s, id: %"PRIu64"\n",
|
2011-05-23 19:21:59 +00:00
|
|
|
s->standard, (uint64_t)standard.id);
|
2011-10-30 02:21:55 +00:00
|
|
|
if (v4l2_ioctl(s->fd, VIDIOC_S_STD, &standard.id) < 0) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR,
|
|
|
|
"The V4L2 driver ioctl set standard(%s) failed\n",
|
2011-05-23 19:21:59 +00:00
|
|
|
s->standard);
|
2007-07-19 15:23:32 +00:00
|
|
|
return AVERROR(EIO);
|
2007-03-29 06:32:54 +00:00
|
|
|
}
|
2007-05-10 10:14:42 +00:00
|
|
|
}
|
2007-03-29 06:32:54 +00:00
|
|
|
|
2011-06-03 08:39:54 +00:00
|
|
|
if (framerate_q.num && framerate_q.den) {
|
2010-09-23 09:16:05 +00:00
|
|
|
av_log(s1, AV_LOG_DEBUG, "Setting time per frame to %d/%d\n",
|
2011-06-03 08:39:54 +00:00
|
|
|
framerate_q.den, framerate_q.num);
|
|
|
|
tpf->numerator = framerate_q.den;
|
|
|
|
tpf->denominator = framerate_q.num;
|
2011-12-27 04:37:58 +00:00
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
if (v4l2_ioctl(s->fd, VIDIOC_S_PARM, &streamparm) != 0) {
|
2010-09-23 09:16:05 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR,
|
|
|
|
"ioctl set time per frame(%d/%d) failed\n",
|
2011-06-03 08:39:54 +00:00
|
|
|
framerate_q.den, framerate_q.num);
|
2010-09-23 09:16:05 +00:00
|
|
|
return AVERROR(EIO);
|
|
|
|
}
|
|
|
|
|
2011-06-03 08:39:54 +00:00
|
|
|
if (framerate_q.num != tpf->denominator ||
|
|
|
|
framerate_q.den != tpf->numerator) {
|
2010-09-23 09:16:05 +00:00
|
|
|
av_log(s1, AV_LOG_INFO,
|
2011-12-27 04:37:58 +00:00
|
|
|
"The driver changed the time per frame from "
|
|
|
|
"%d/%d to %d/%d\n",
|
2011-06-03 08:39:54 +00:00
|
|
|
framerate_q.den, framerate_q.num,
|
2010-09-23 09:16:05 +00:00
|
|
|
tpf->numerator, tpf->denominator);
|
|
|
|
}
|
2011-01-05 14:15:11 +00:00
|
|
|
} else {
|
2011-10-30 02:21:55 +00:00
|
|
|
if (v4l2_ioctl(s->fd, VIDIOC_G_PARM, &streamparm) != 0) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %s\n",
|
|
|
|
strerror(errno));
|
2011-01-05 14:15:11 +00:00
|
|
|
return AVERROR(errno);
|
|
|
|
}
|
2010-09-23 09:16:05 +00:00
|
|
|
}
|
2011-06-03 11:29:43 +00:00
|
|
|
s1->streams[0]->codec->time_base.den = tpf->denominator;
|
|
|
|
s1->streams[0]->codec->time_base.num = tpf->numerator;
|
2010-09-23 09:16:05 +00:00
|
|
|
|
2007-03-29 06:32:54 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-01-03 10:43:36 +00:00
|
|
|
static uint32_t device_try_init(AVFormatContext *s1,
|
2011-05-24 07:02:11 +00:00
|
|
|
enum PixelFormat pix_fmt,
|
2010-01-03 10:43:36 +00:00
|
|
|
int *width,
|
|
|
|
int *height,
|
|
|
|
enum CodecID *codec_id)
|
2009-12-14 10:34:31 +00:00
|
|
|
{
|
2011-05-24 07:02:11 +00:00
|
|
|
uint32_t desired_format = fmt_ff2v4l(pix_fmt, s1->video_codec_id);
|
2009-12-14 10:34:31 +00:00
|
|
|
|
|
|
|
if (desired_format == 0 ||
|
|
|
|
device_init(s1, width, height, desired_format) < 0) {
|
|
|
|
int i;
|
|
|
|
|
|
|
|
desired_format = 0;
|
|
|
|
for (i = 0; i<FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
|
2010-01-28 15:45:21 +00:00
|
|
|
if (s1->video_codec_id == CODEC_ID_NONE ||
|
|
|
|
fmt_conversion_table[i].codec_id == s1->video_codec_id) {
|
2009-12-14 10:34:31 +00:00
|
|
|
desired_format = fmt_conversion_table[i].v4l2_fmt;
|
|
|
|
if (device_init(s1, width, height, desired_format) >= 0) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
desired_format = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2011-12-27 04:37:58 +00:00
|
|
|
|
2009-12-14 10:34:31 +00:00
|
|
|
if (desired_format != 0) {
|
|
|
|
*codec_id = fmt_v4l2codec(desired_format);
|
|
|
|
assert(*codec_id != CODEC_ID_NONE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return desired_format;
|
|
|
|
}
|
|
|
|
|
2012-01-12 12:20:36 +00:00
|
|
|
static int v4l2_read_header(AVFormatContext *s1)
|
2006-02-01 11:31:33 +00:00
|
|
|
{
|
|
|
|
struct video_data *s = s1->priv_data;
|
|
|
|
AVStream *st;
|
2011-05-26 18:37:08 +00:00
|
|
|
int res = 0;
|
2011-12-27 05:27:41 +00:00
|
|
|
uint32_t desired_format;
|
2009-12-14 10:34:31 +00:00
|
|
|
enum CodecID codec_id;
|
2011-05-24 07:02:11 +00:00
|
|
|
enum PixelFormat pix_fmt = PIX_FMT_NONE;
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-06-18 09:43:24 +00:00
|
|
|
st = avformat_new_stream(s1, NULL);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (!st) {
|
2011-05-26 18:37:08 +00:00
|
|
|
res = AVERROR(ENOMEM);
|
|
|
|
goto out;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
2011-12-27 05:27:41 +00:00
|
|
|
s->fd = device_open(s1);
|
|
|
|
if (s->fd < 0) {
|
|
|
|
res = s->fd;
|
2011-05-24 05:43:01 +00:00
|
|
|
goto out;
|
|
|
|
}
|
2011-12-27 05:27:41 +00:00
|
|
|
|
2011-12-27 05:31:41 +00:00
|
|
|
if (s->list_format) {
|
|
|
|
list_formats(s1, s->fd, s->list_format);
|
|
|
|
res = AVERROR_EXIT;
|
2011-05-24 07:02:11 +00:00
|
|
|
goto out;
|
|
|
|
}
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-11-29 18:28:15 +00:00
|
|
|
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-12-27 05:31:41 +00:00
|
|
|
if (s->pixel_format) {
|
2012-01-04 14:06:10 +00:00
|
|
|
AVCodec *codec = avcodec_find_decoder_by_name(s->pixel_format);
|
|
|
|
|
|
|
|
if (codec)
|
|
|
|
s1->video_codec_id = codec->id;
|
2011-12-27 05:31:41 +00:00
|
|
|
|
|
|
|
pix_fmt = av_get_pix_fmt(s->pixel_format);
|
|
|
|
|
2012-01-04 14:06:10 +00:00
|
|
|
if (pix_fmt == PIX_FMT_NONE && !codec) {
|
|
|
|
av_log(s1, AV_LOG_ERROR, "No such input format: %s.\n",
|
2011-12-27 05:31:41 +00:00
|
|
|
s->pixel_format);
|
|
|
|
|
|
|
|
res = AVERROR(EINVAL);
|
|
|
|
goto out;
|
|
|
|
}
|
2011-05-24 07:02:11 +00:00
|
|
|
}
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2010-04-26 22:07:15 +00:00
|
|
|
if (!s->width && !s->height) {
|
|
|
|
struct v4l2_format fmt;
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_VERBOSE,
|
|
|
|
"Querying the device for the current frame size\n");
|
2010-04-26 22:07:15 +00:00
|
|
|
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
2011-10-30 02:21:55 +00:00
|
|
|
if (v4l2_ioctl(s->fd, VIDIOC_G_FMT, &fmt) < 0) {
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_FMT): %s\n",
|
|
|
|
strerror(errno));
|
2011-05-26 18:37:08 +00:00
|
|
|
res = AVERROR(errno);
|
|
|
|
goto out;
|
2010-04-26 22:07:15 +00:00
|
|
|
}
|
2011-12-27 04:37:58 +00:00
|
|
|
|
2010-04-26 22:07:15 +00:00
|
|
|
s->width = fmt.fmt.pix.width;
|
|
|
|
s->height = fmt.fmt.pix.height;
|
2011-12-27 04:37:58 +00:00
|
|
|
av_log(s1, AV_LOG_VERBOSE,
|
|
|
|
"Setting frame size to %dx%d\n", s->width, s->height);
|
2010-04-26 22:07:15 +00:00
|
|
|
}
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
desired_format = device_try_init(s1, pix_fmt, &s->width, &s->height,
|
|
|
|
&codec_id);
|
2006-02-01 11:31:33 +00:00
|
|
|
if (desired_format == 0) {
|
2009-12-14 10:34:31 +00:00
|
|
|
av_log(s1, AV_LOG_ERROR, "Cannot find a proper format for "
|
2011-05-29 13:22:45 +00:00
|
|
|
"codec_id %d, pix_fmt %d.\n", s1->video_codec_id, pix_fmt);
|
2011-10-30 02:21:55 +00:00
|
|
|
v4l2_close(s->fd);
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-05-26 18:37:08 +00:00
|
|
|
res = AVERROR(EIO);
|
|
|
|
goto out;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
2011-11-21 06:50:03 +00:00
|
|
|
if ((res = av_image_check_size(s->width, s->height, 0, s1)) < 0)
|
2011-05-26 18:37:08 +00:00
|
|
|
goto out;
|
2011-12-27 04:37:58 +00:00
|
|
|
|
2006-02-01 11:31:33 +00:00
|
|
|
s->frame_format = desired_format;
|
|
|
|
|
2012-01-28 03:23:26 +00:00
|
|
|
if ((res = v4l2_set_parameters(s1)) < 0)
|
2011-05-26 18:37:08 +00:00
|
|
|
goto out;
|
2007-03-29 06:32:54 +00:00
|
|
|
|
2009-12-14 10:34:31 +00:00
|
|
|
st->codec->pix_fmt = fmt_v4l2ff(desired_format, codec_id);
|
2011-12-27 04:37:58 +00:00
|
|
|
s->frame_size =
|
|
|
|
avpicture_get_size(st->codec->pix_fmt, s->width, s->height);
|
|
|
|
|
2011-12-27 05:27:41 +00:00
|
|
|
if ((res = mmap_init(s1)) ||
|
|
|
|
(res = mmap_start(s1)) < 0) {
|
2011-10-30 02:21:55 +00:00
|
|
|
v4l2_close(s->fd);
|
2011-05-26 18:37:08 +00:00
|
|
|
goto out;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
2011-12-27 05:27:41 +00:00
|
|
|
|
2006-02-01 11:31:33 +00:00
|
|
|
s->top_field_first = first_field(s->fd);
|
|
|
|
|
2010-03-30 23:30:55 +00:00
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
2009-12-14 10:34:31 +00:00
|
|
|
st->codec->codec_id = codec_id;
|
2011-12-27 06:41:01 +00:00
|
|
|
if (codec_id == CODEC_ID_RAWVIDEO)
|
|
|
|
st->codec->codec_tag =
|
|
|
|
avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
|
2012-02-05 19:06:12 +00:00
|
|
|
if (desired_format == V4L2_PIX_FMT_YVU420)
|
|
|
|
st->codec->codec_tag = MKTAG('Y', 'V', '1', '2');
|
2010-04-25 18:47:40 +00:00
|
|
|
st->codec->width = s->width;
|
|
|
|
st->codec->height = s->height;
|
2006-02-01 11:31:33 +00:00
|
|
|
st->codec->bit_rate = s->frame_size * 1/av_q2d(st->codec->time_base) * 8;
|
|
|
|
|
2011-05-26 18:37:08 +00:00
|
|
|
out:
|
|
|
|
return res;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int v4l2_read_packet(AVFormatContext *s1, AVPacket *pkt)
|
|
|
|
{
|
|
|
|
struct video_data *s = s1->priv_data;
|
2011-12-27 04:37:58 +00:00
|
|
|
AVFrame *frame = s1->streams[0]->codec->coded_frame;
|
2006-02-01 11:31:33 +00:00
|
|
|
int res;
|
|
|
|
|
2011-12-27 04:52:02 +00:00
|
|
|
av_init_packet(pkt);
|
|
|
|
if ((res = mmap_read_frame(s1, pkt)) < 0) {
|
2007-09-13 12:46:30 +00:00
|
|
|
return res;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
2011-12-27 04:37:58 +00:00
|
|
|
if (frame && s->interlaced) {
|
|
|
|
frame->interlaced_frame = 1;
|
|
|
|
frame->top_field_first = s->top_field_first;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
2009-12-14 10:30:37 +00:00
|
|
|
return pkt->size;
|
2006-02-01 11:31:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int v4l2_read_close(AVFormatContext *s1)
|
|
|
|
{
|
|
|
|
struct video_data *s = s1->priv_data;
|
|
|
|
|
2011-12-27 04:52:02 +00:00
|
|
|
mmap_close(s);
|
2006-02-01 11:31:33 +00:00
|
|
|
|
2011-10-30 02:21:55 +00:00
|
|
|
v4l2_close(s->fd);
|
2006-02-01 11:31:33 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-24 05:43:01 +00:00
|
|
|
#define OFFSET(x) offsetof(struct video_data, x)
|
|
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
2011-05-28 18:38:06 +00:00
|
|
|
|
2011-05-23 19:21:59 +00:00
|
|
|
static const AVOption options[] = {
|
2011-12-27 02:38:13 +00:00
|
|
|
{ "standard", "TV standard, used only by analog frame grabber", OFFSET(standard), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC },
|
|
|
|
{ "channel", "TV channel, used only by frame grabber", OFFSET(channel), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, DEC },
|
2012-05-20 12:11:03 +00:00
|
|
|
{ "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
|
2012-01-04 14:06:10 +00:00
|
|
|
{ "pixel_format", "Preferred pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
|
|
{ "input_format", "Preferred pixel format (for raw video) or codec name", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
2011-12-27 02:38:13 +00:00
|
|
|
{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
2011-12-27 05:31:41 +00:00
|
|
|
{ "list_formats", "List available formats and exit", OFFSET(list_format), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, DEC, "list_formats" },
|
|
|
|
{ "all", "Show all available formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.dbl = V4L_ALLFORMATS }, 0, INT_MAX, DEC, "list_formats" },
|
|
|
|
{ "raw", "Show only non-compressed formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.dbl = V4L_RAWFORMATS }, 0, INT_MAX, DEC, "list_formats" },
|
|
|
|
{ "compressed", "Show only compressed formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.dbl = V4L_COMPFORMATS }, 0, INT_MAX, DEC, "list_formats" },
|
2012-03-03 14:56:11 +00:00
|
|
|
{ "timestamps", "Kind of timestamps for grabbed frames", OFFSET(ts_mode), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, 2, DEC, "timestamps" },
|
|
|
|
{ "default", "Use timestamps from the kernel", OFFSET(ts_mode), AV_OPT_TYPE_CONST, {.dbl = V4L_TS_DEFAULT }, 0, 2, DEC, "timestamps" },
|
|
|
|
{ "abs", "Use absolute timestamps (wall clock)", OFFSET(ts_mode), AV_OPT_TYPE_CONST, {.dbl = V4L_TS_ABS }, 0, 2, DEC, "timestamps" },
|
|
|
|
{ "mono2abs", "Force conversion from monotonic to absolute timestamps", OFFSET(ts_mode), AV_OPT_TYPE_CONST, {.dbl = V4L_TS_MONO2ABS }, 0, 2, DEC, "timestamps" },
|
|
|
|
{ "ts", "Kind of timestamps for grabbed frames", OFFSET(ts_mode), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, 2, DEC, "timestamps" },
|
2011-05-23 19:21:59 +00:00
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVClass v4l2_class = {
|
|
|
|
.class_name = "V4L2 indev",
|
|
|
|
.item_name = av_default_item_name,
|
|
|
|
.option = options,
|
|
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
|
|
};
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
AVInputFormat ff_v4l2_demuxer = {
|
2011-10-30 00:39:30 +00:00
|
|
|
.name = "video4linux2,v4l2",
|
2011-09-23 18:50:11 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Video4Linux2 device grab"),
|
|
|
|
.priv_data_size = sizeof(struct video_data),
|
|
|
|
.read_header = v4l2_read_header,
|
|
|
|
.read_packet = v4l2_read_packet,
|
|
|
|
.read_close = v4l2_read_close,
|
|
|
|
.flags = AVFMT_NOFILE,
|
|
|
|
.priv_class = &v4l2_class,
|
2006-02-01 11:31:33 +00:00
|
|
|
};
|