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| author | Michele Calgaro <michele.calgaro@yahoo.it> | 2020-09-11 14:38:47 +0900 |
|---|---|---|
| committer | Michele Calgaro <michele.calgaro@yahoo.it> | 2020-09-11 14:38:47 +0900 |
| commit | 884c8093d63402a1ad0b502244b791e3c6782be3 (patch) | |
| tree | a600d4ab0d431a2bdfe4c15b70df43c14fbd8dd0 /debian/transcode/transcode-1.1.7/import/probe_v4l.c | |
| parent | 14e1aa2006796f147f3f4811fb908a6b01e79253 (diff) | |
| download | extra-dependencies-884c8093d63402a1ad0b502244b791e3c6782be3.tar.gz extra-dependencies-884c8093d63402a1ad0b502244b791e3c6782be3.zip | |
Added debian extra dependency packages.
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
Diffstat (limited to 'debian/transcode/transcode-1.1.7/import/probe_v4l.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/import/probe_v4l.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/import/probe_v4l.c b/debian/transcode/transcode-1.1.7/import/probe_v4l.c new file mode 100644 index 00000000..8d571630 --- /dev/null +++ b/debian/transcode/transcode-1.1.7/import/probe_v4l.c @@ -0,0 +1,150 @@ +/* + * probe_v4l.c + * + * Copyright (C) Tilmann Bitterberg - January 2004 + * + * This file is part of transcode, a video stream processing tool + * + * transcode 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, or (at your option) + * any later version. + * + * transcode 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 GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "transcode.h" +#include "tcinfo.h" +#include "ioaux.h" +#include "tc.h" +#include "libtc/libtc.h" + +#ifdef HAVE_V4L + +#include <sys/ioctl.h> + +#include "v4l/videodev.h" + +#if defined(HAVE_LINUX_VIDEODEV2_H) && defined(HAVE_STRUCT_V4L2_BUFFER) +#define _LINUX_TIME_H +#include <linux/videodev2.h> +#else +#include "v4l/videodev2.h" +#endif + + +void probe_v4l(info_t *ipipe) +{ + int is_v4l2 = 0; + struct v4l2_capability caps; // v4l2 + + /* yes, this is a bit sick */ + close(ipipe->fd_in); + ipipe->fd_in = open(ipipe->name, O_RDWR, 0); + if (ipipe->fd_in < 0) { + tc_log_error(__FILE__, "cannot (reopen) device in RW mode: %s", + strerror(errno)); + goto error; + } + + /* let's start with good old defaults */ + ipipe->probe_info->width = PAL_W; + ipipe->probe_info->height = PAL_H; + ipipe->probe_info->fps = 25; + ipipe->probe_info->frc = 3; + + /* try a v4l2 ioctl */ + if (ipipe->verbose & TC_DEBUG) + tc_log_msg(__FILE__, "Checking if v4l2 ioctls are supported..."); + if (ioctl(ipipe->fd_in, VIDIOC_QUERYCAP, &caps) < 0) { + is_v4l2 = 0; + if (ipipe->verbose & TC_DEBUG) + tc_log_msg(__FILE__, "... no"); + } else { + is_v4l2 = 1; + ipipe->probe_info->magic=TC_MAGIC_V4L2_VIDEO; + if (ipipe->verbose & TC_DEBUG) + tc_log_msg(__FILE__, "... yes"); + } + + /* try v4l first */ + if (!is_v4l2) { + struct video_capability capability; // v4l1 + if (ipipe->verbose & TC_DEBUG) + tc_log_msg(__FILE__, "Checking if v4l1 ioctls are supported..."); + if (-1 == ioctl(ipipe->fd_in,VIDIOCGCAP,&capability)) { + if (ipipe->verbose & TC_DEBUG) + tc_log_msg(__FILE__, "... no"); + goto error; + } else { + ipipe->probe_info->magic = TC_MAGIC_V4L_VIDEO; + if (ipipe->verbose & TC_DEBUG) + tc_log_msg(__FILE__, "... yes"); + } + + ipipe->probe_info->width = capability.maxwidth; + ipipe->probe_info->height = capability.maxheight; + /* + * saa7134 sometimes delivers strange (for me) results. + * In the case, PAL settings are forced until I figure out + * if such results are correct or not. + */ + if (ipipe->probe_info->width == 720 && ipipe->probe_info->height == 578) { + ipipe->probe_info->height = 576; + } + } + + if (is_v4l2) { + v4l2_std_id std; + + if (ioctl(ipipe->fd_in, VIDIOC_G_STD, &std) >= 0) { + if (std & V4L2_STD_525_60) { + ipipe->probe_info->fps = (30000/1001); + ipipe->probe_info->frc = 4; + ipipe->probe_info->width = 640; + ipipe->probe_info->height = 480; + } else if(std & V4L2_STD_625_50) { + ipipe->probe_info->fps = 25; + ipipe->probe_info->frc = 3; + ipipe->probe_info->width = 720; + ipipe->probe_info->height = 576; + } + } + } + + // FIXME: Check if these settings are actually supported by /dev/dsp + ipipe->probe_info->track[0].samplerate = 44100; + ipipe->probe_info->track[0].chan = 2; + ipipe->probe_info->track[0].bits = 16; + ipipe->probe_info->track[0].format = 0x1; + if (ipipe->probe_info->track[0].chan > 0) + ipipe->probe_info->num_tracks=1; + + return; + +error: + ipipe->error = 1; + ipipe->probe_info->codec=TC_CODEC_UNKNOWN; + ipipe->probe_info->magic=TC_MAGIC_UNKNOWN; + + return; +} + +#else // HAVE_V4L + +void probe_v4l(info_t *ipipe) +{ + tc_log_error(__FILE__, "No support for video4linux compiled in"); + ipipe->probe_info->codec=TC_CODEC_UNKNOWN; + ipipe->probe_info->magic=TC_MAGIC_UNKNOWN; +} + +#endif |
