Skip to content

V
vlc-2-2
Commit 657fff36 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
Browse files
Options

Remove support for V4L version 1

parent c23388a9
Hide whitespace changes
Inline Side-by-side
Showing with 0 additions and 1494 deletions
configure.ac
View file @ 657fff36
......@@ -2126,42 +2126,6 @@ then
fi
dnl
dnl Video4Linux plugin
dnl
AC_ARG_ENABLE(v4l,
[ --enable-v4l Video4Linux input support (default disabled)])
if test "${enable_v4l}" = "yes"
then
AC_ARG_WITH(v4l,
[ --with-v4l=PATH path to a v4l-enabled kernel tree],[],[])
if test "${with_v4l}" != "no" -a -n "${with_v4l}"
then
VLC_ADD_CPPFLAGS([v4l],[-I${with_v4l}/include])
fi
CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_v4l}"
AC_CHECK_HEADERS(linux/videodev.h, [
VLC_ADD_PLUGIN([v4l])
],[])
CPPFLAGS="${CPPFLAGS_save}"
fi
dnl
dnl libv4l1 support for video4linux.
dnl
AC_ARG_ENABLE( libv4l,
[ --enable-libv4l Libv4l Video4Linux support (default enabled)])
if test "${enable_libv4l}" != "no" -a "${enable_v4l}" != "no"
then
PKG_CHECK_MODULES( LIBV4L, libv4l1, [
VLC_ADD_LDFLAGS([v4l],[${LIBV4L_LIBS}])
VLC_ADD_CFLAGS([v4l],[${LIBV4L_CFLAGS}])
AC_DEFINE(HAVE_LIBV4L1, 1, Define if libv4l is available)],
AC_MSG_WARN([LibV4L support disabled because libv4l development headers were not found])
)
fi
dnl
dnl Video4Linux2 plugin
dnl
......
modules/access/Modules.am
View file @ 657fff36
......@@ -35,7 +35,6 @@ SOURCES_dvdnav = dvdnav.c
SOURCES_dvdread = dvdread.c
SOURCES_dc1394 = dc1394.c
SOURCES_pvr = pvr.c videodev2.h
SOURCES_v4l = v4l.c videodev_mjpeg.h
SOURCES_v4l2 = v4l2.c
SOURCES_qtcapture = qtcapture.m
SOURCES_cdda = \
......
modules/access/v4l.c deleted 100644 → 0
View file @ c23388a9
/*****************************************************************************
* v4l.c : Video4Linux input module for vlc
*****************************************************************************
* Copyright (C) 2002-2004 the VideoLAN team
* $Id$
*
* Author: Laurent Aimar <fenrir@via.ecp.fr>
* Paul Forgey <paulf at aphrodite dot com>
* Gildas Bazin <gbazin@videolan.org>
* Benjamin Pracht <bigben at videolan dot org>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_input.h>
#include <vlc_demux.h>
#include <vlc_access.h>
#include <vlc_picture.h>
#include <vlc_charset.h>
#include <vlc_fs.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <errno.h>
/* From GStreamer's v4l plugin:
* Because of some really cool feature in video4linux1, also known as
* 'not including sys/types.h and sys/time.h', we had to include it
* ourselves. In all their intelligence, these people decided to fix
* this in the next version (video4linux2) in such a cool way that it
* breaks all compilations of old stuff...
* The real problem is actually that linux/time.h doesn't use proper
* macro checks before defining types like struct timeval. The proper
* fix here is to either fuck the kernel header (which is what we do
* by defining _LINUX_TIME_H, an innocent little hack) or by fixing it
* upstream, which I'll consider doing later on. If you get compiler
* errors here, check your linux/time.h && sys/time.h header setup.
*/
#define _LINUX_TIME_H
#include <linux/videodev.h>
#include "videodev_mjpeg.h"
#ifdef HAVE_LIBV4L1
#include <libv4l1.h>
#endif
/*****************************************************************************
* Module descriptior
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
"Caching value for V4L captures. This " \
"value should be set in milliseconds." )
#define VDEV_TEXT N_("Video device name")
#define VDEV_LONGTEXT N_( \
"Name of the video device to use. " \
"If you don't specify anything, no video device will be used.")
#define CHROMA_TEXT N_("Video input chroma format")
#define CHROMA_LONGTEXT N_( \
"Force the Video4Linux video device to use a specific chroma format " \
"(eg. I420 (default), RV24, etc.)")
#define FREQUENCY_TEXT N_( "Frequency" )
#define FREQUENCY_LONGTEXT N_( \
"Frequency to capture (in kHz), if applicable." )
#define CHANNEL_TEXT N_( "Channel" )
#define CHANNEL_LONGTEXT N_( \
"Channel of the card to use (Usually, 0 = tuner, " \
"1 = composite, 2 = svideo)." )
#define NORM_TEXT N_( "Norm" )
#define NORM_LONGTEXT N_( \
"Norm of the stream (Automatic, SECAM, PAL, or NTSC)." )
#define AUDIO_TEXT N_( "Audio Channel" )
#define AUDIO_LONGTEXT N_( \
"Audio Channel to use, if there are several audio inputs." )
#define WIDTH_TEXT N_( "Width" )
#define WIDTH_LONGTEXT N_( "Width of the stream to capture " \
"(-1 for autodetect)." )
#define HEIGHT_TEXT N_( "Height" )
#define HEIGHT_LONGTEXT N_( "Height of the stream to capture " \
"(-1 for autodetect)." )
#define BRIGHTNESS_TEXT N_( "Brightness" )
#define BRIGHTNESS_LONGTEXT N_( \
"Brightness of the video input." )
#define HUE_TEXT N_( "Hue" )
#define HUE_LONGTEXT N_( \
"Hue of the video input." )
#define COLOUR_TEXT N_( "Color" )
#define COLOUR_LONGTEXT N_( \
"Color of the video input." )
#define CONTRAST_TEXT N_( "Contrast" )
#define CONTRAST_LONGTEXT N_( \
"Contrast of the video input." )
#define TUNER_TEXT N_( "Tuner" )
#define TUNER_LONGTEXT N_( "Tuner to use, if there are several ones." )
#define MJPEG_TEXT N_( "MJPEG" )
#define MJPEG_LONGTEXT N_( \
"Set this option if the capture device outputs MJPEG" )
#define DECIMATION_TEXT N_( "Decimation" )
#define DECIMATION_LONGTEXT N_( \
"Decimation level for MJPEG streams" )
#define QUALITY_TEXT N_( "Quality" )
#define QUALITY_LONGTEXT N_( "Quality of the stream." )
#define FPS_TEXT N_( "Framerate" )
#define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
"(-1 for autodetect)." )
#define AUDIO_DEPRECATED_ERROR N_( \
"Alsa or OSS audio capture in the v4l access is deprecated. " \
"please use 'v4l:/""/ :input-slave=alsa:/""/' or " \
"'v4l:/""/ :input-slave=oss:/""/' instead." )
static const int i_norm_list[] =
{ VIDEO_MODE_AUTO, VIDEO_MODE_SECAM, VIDEO_MODE_PAL, VIDEO_MODE_NTSC };
static const char *const psz_norm_list_text[] =
{ N_("Automatic"), N_("SECAM"), N_("PAL"), N_("NTSC") };
#define V4L_DEFAULT "/dev/video"
vlc_module_begin ()
set_shortname( N_("Video4Linux") )
set_description( N_("Video4Linux input") )
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_ACCESS )
add_integer( "v4l-caching", DEFAULT_PTS_DELAY / 1000, NULL,
CACHING_TEXT, CACHING_LONGTEXT, true )
add_obsolete_string( "v4l-vdev" );
add_obsolete_string( "v4l-adev" );
add_string( "v4l-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
true )
add_float( "v4l-fps", -1.0, NULL, FPS_TEXT, FPS_LONGTEXT, true )
add_obsolete_integer( "v4l-samplerate" );
add_integer( "v4l-channel", 0, NULL, CHANNEL_TEXT, CHANNEL_LONGTEXT,
true )
add_integer( "v4l-tuner", -1, NULL, TUNER_TEXT, TUNER_LONGTEXT, true )
add_integer( "v4l-norm", VIDEO_MODE_AUTO, NULL, NORM_TEXT, NORM_LONGTEXT,
false )
change_integer_list( i_norm_list, psz_norm_list_text, NULL );
add_integer( "v4l-frequency", -1, NULL, FREQUENCY_TEXT, FREQUENCY_LONGTEXT,
false )
add_integer( "v4l-audio", -1, NULL, AUDIO_TEXT, AUDIO_LONGTEXT, true )
add_obsolete_bool( "v4l-stereo" );
add_integer( "v4l-width", 0, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, true )
add_integer( "v4l-height", 0, NULL, HEIGHT_TEXT, HEIGHT_LONGTEXT,
true )
add_integer( "v4l-brightness", -1, NULL, BRIGHTNESS_TEXT,
BRIGHTNESS_LONGTEXT, true )
add_integer( "v4l-colour", -1, NULL, COLOUR_TEXT, COLOUR_LONGTEXT,
true )
add_integer( "v4l-hue", -1, NULL, HUE_TEXT, HUE_LONGTEXT, true )
add_integer( "v4l-contrast", -1, NULL, CONTRAST_TEXT, CONTRAST_LONGTEXT,
true )
add_bool( "v4l-mjpeg", false, NULL, MJPEG_TEXT, MJPEG_LONGTEXT,
true )
add_integer( "v4l-decimation", 1, NULL, DECIMATION_TEXT,
DECIMATION_LONGTEXT, true )
add_integer( "v4l-quality", 100, NULL, QUALITY_TEXT, QUALITY_LONGTEXT,
true )
add_shortcut( "v4l" )
set_capability( "access_demux", 10 )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Access: local prototypes
*****************************************************************************/
static int Demux ( demux_t * );
static int Control( demux_t *, int, va_list );
static void ParseMRL ( demux_t * );
static int OpenVideoDev( demux_t *, char * );
static block_t *GrabVideo( demux_t * );
#define MJPEG_BUFFER_SIZE (256*1024)
struct quicktime_mjpeg_app1
{
uint32_t i_reserved; /* set to 0 */
uint32_t i_tag; /* 'mjpg' */
uint32_t i_field_size; /* offset following EOI */
uint32_t i_padded_field_size; /* offset following EOI+pad */
uint32_t i_next_field; /* offset to next field */
uint32_t i_DQT_offset;
uint32_t i_DHT_offset;
uint32_t i_SOF_offset;
uint32_t i_SOS_offset;
uint32_t i_data_offset; /* following SOS marker data */
};
static const struct
{
int i_v4l;
vlc_fourcc_t i_fourcc;
} v4lchroma_to_fourcc[] =
{
{ VIDEO_PALETTE_GREY, VLC_CODEC_GREY },
{ VIDEO_PALETTE_HI240, VLC_FOURCC( 'I', '2', '4', '0' ) },
{ VIDEO_PALETTE_RGB565, VLC_CODEC_RGB16 },
{ VIDEO_PALETTE_RGB555, VLC_CODEC_RGB15 },
{ VIDEO_PALETTE_RGB24, VLC_CODEC_RGB24 },
{ VIDEO_PALETTE_RGB32, VLC_CODEC_RGB32 },
{ VIDEO_PALETTE_YUV422, VLC_CODEC_YUYV },
{ VIDEO_PALETTE_YUYV, VLC_CODEC_YUYV },
{ VIDEO_PALETTE_UYVY, VLC_CODEC_UYVY },
{ VIDEO_PALETTE_YUV420, VLC_FOURCC( 'I', '4', '2', 'N' ) },
{ VIDEO_PALETTE_YUV411, VLC_FOURCC( 'I', '4', '1', 'N' ) },
{ VIDEO_PALETTE_RAW, VLC_FOURCC( 'G', 'R', 'A', 'W' ) },
{ VIDEO_PALETTE_YUV422P, VLC_CODEC_I422 },
{ VIDEO_PALETTE_YUV420P, VLC_CODEC_I420 },
{ VIDEO_PALETTE_YUV411P, VLC_CODEC_I411 },
{ 0, 0 }
};
struct demux_sys_t
{
/* Devices */
char *psz_device; /* Main device from MRL */
int i_fd;
/* Video properties */
picture_t pic;
int i_fourcc;
int i_channel;
int i_audio;
int i_norm;
int i_tuner;
int i_frequency;
int i_width;
int i_height;
int i_brightness;
int i_hue;
int i_colour;
int i_contrast;
float f_fps; /* <= 0.0 mean to grab at full rate */
mtime_t i_video_pts; /* only used when f_fps > 0 */
bool b_mjpeg;
int i_decimation;
int i_quality;
struct video_capability vid_cap;
struct video_mbuf vid_mbuf;
struct mjpeg_requestbuffers mjpeg_buffers;
uint8_t *p_video_mmap;
int i_frame_pos;
struct video_mmap vid_mmap;
struct video_picture vid_picture;
int i_video_frame_size;
es_out_id_t *p_es;
};
#ifndef HAVE_LIBV4L1
# define v4l1_close close
# define v4l1_ioctl ioctl
# define v4l1_mmap mmap
# define v4l1_munmap munmap
# define v4l1_open vlc_open
#endif
/*****************************************************************************
* Open: opens v4l device
*****************************************************************************
*
* url: <video device>::::
*
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
/* Only when selected */
if( *p_demux->psz_access == '\0' )
return VLC_EGENERIC;
/* Set up p_demux */
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->info.i_update = 0;
p_demux->info.i_title = 0;
p_demux->info.i_seekpoint = 0;
p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
if( !p_sys )
return VLC_ENOMEM;
p_sys->i_audio = var_CreateGetInteger( p_demux, "v4l-audio" );
p_sys->i_channel = var_CreateGetInteger( p_demux, "v4l-channel" );
p_sys->i_norm = var_CreateGetInteger( p_demux, "v4l-norm" );
p_sys->i_tuner = var_CreateGetInteger( p_demux, "v4l-tuner" );
p_sys->i_frequency = var_CreateGetInteger( p_demux, "v4l-frequency" );
p_sys->f_fps = var_CreateGetFloat( p_demux, "v4l-fps" );
p_sys->i_width = var_CreateGetInteger( p_demux, "v4l-width" );
p_sys->i_height = var_CreateGetInteger( p_demux, "v4l-height" );
p_sys->i_video_pts = -1;
p_sys->i_brightness = var_CreateGetInteger( p_demux, "v4l-brightness" );
p_sys->i_hue = var_CreateGetInteger( p_demux, "v4l-hue" );
p_sys->i_colour = var_CreateGetInteger( p_demux, "v4l-colour" );
p_sys->i_contrast = var_CreateGetInteger( p_demux, "v4l-contrast" );
p_sys->b_mjpeg = var_CreateGetBool( p_demux, "v4l-mjpeg" );
p_sys->i_decimation = var_CreateGetInteger( p_demux, "v4l-decimation" );
p_sys->i_quality = var_CreateGetInteger( p_demux, "v4l-quality" );
p_sys->psz_device = NULL;
p_sys->i_fd = -1;
p_sys->p_es = NULL;
ParseMRL( p_demux );
msg_Dbg( p_this, "opening device '%s'", p_sys->psz_device );
p_sys->i_fd = OpenVideoDev( p_demux, p_sys->psz_device );
if( p_sys->i_fd < 0 )
{
Close( p_this );
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "v4l grabbing started" );
/* Declare elementary streams */
es_format_t fmt;
es_format_Init( &fmt, VIDEO_ES, p_sys->i_fourcc );
fmt.video.i_width = p_sys->i_width;
fmt.video.i_height = p_sys->i_height;
fmt.video.i_sar_num = 4 * fmt.video.i_height;
fmt.video.i_sar_den = 3 * fmt.video.i_width;
/* Setup rgb mask for RGB formats */
switch( p_sys->i_fourcc )
{
case VLC_CODEC_RGB15:
fmt.video.i_rmask = 0x001f;
fmt.video.i_gmask = 0x03e0;
fmt.video.i_bmask = 0x7c00;
break;
case VLC_CODEC_RGB16:
fmt.video.i_rmask = 0x001f;
fmt.video.i_gmask = 0x07e0;
fmt.video.i_bmask = 0xf800;
break;
case VLC_CODEC_RGB24:
case VLC_CODEC_RGB32:
fmt.video.i_rmask = 0x00ff0000;
fmt.video.i_gmask = 0x0000ff00;
fmt.video.i_bmask = 0x000000ff;
break;
}
msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
(char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
p_sys->p_es = es_out_Add( p_demux->out, &fmt );
/* Update default_pts to a suitable value for access */
var_Create( p_demux, "v4l-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: close device, free resources
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t *)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
free( p_sys->psz_device );
if( p_sys->i_fd >= 0 ) v4l1_close( p_sys->i_fd );
if( p_sys->b_mjpeg )
{
int i_noframe = -1;
v4l1_ioctl( p_sys->i_fd, MJPIOC_QBUF_CAPT, &i_noframe );
}
if( p_sys->p_video_mmap && p_sys->p_video_mmap != MAP_FAILED )
{
if( p_sys->b_mjpeg )
v4l1_munmap( p_sys->p_video_mmap, p_sys->mjpeg_buffers.size *
p_sys->mjpeg_buffers.count );
else
v4l1_munmap( p_sys->p_video_mmap, p_sys->vid_mbuf.size );
}
free( p_sys );
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
bool *pb;
int64_t *pi64;
switch( i_query )
{
/* Special for access_demux */
case DEMUX_CAN_PAUSE:
case DEMUX_CAN_SEEK:
case DEMUX_CAN_CONTROL_PACE:
pb = (bool*)va_arg( args, bool * );
*pb = false;
return VLC_SUCCESS;
case DEMUX_GET_PTS_DELAY:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = var_GetInteger( p_demux, "v4l-caching" ) * 1000;
return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = mdate();
return VLC_SUCCESS;
/* TODO implement others */
default:
return VLC_EGENERIC;
}
return VLC_EGENERIC;
}
/*****************************************************************************
* Demux:
*****************************************************************************/
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block = GrabVideo( p_demux );
if( !p_block )
{
msleep( 10000 ); /* Unfortunately v4l doesn't allow polling */
return 1;
}
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
es_out_Send( p_demux->out, p_sys->p_es, p_block );
return 1;
}
/*****************************************************************************
* ParseMRL: parse the options contained in the MRL
*****************************************************************************/
static void ParseMRL( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
char *psz_dup = strdup( p_demux->psz_location );
char *psz_parser = psz_dup;
while( *psz_parser && *psz_parser != ':' )
{
psz_parser++;
}
if( *psz_parser == ':' )
{
/* read options */
for( ;; )
{
*psz_parser++ = '\0';
if( !strncmp( psz_parser, "channel=", strlen( "channel=" ) ) )
{
p_sys->i_channel = strtol( psz_parser + strlen( "channel=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "norm=", strlen( "norm=" ) ) )
{
psz_parser += strlen( "norm=" );
if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
{
p_sys->i_norm = VIDEO_MODE_PAL;
psz_parser += strlen( "pal" );
}
else if( !strncmp( psz_parser, "ntsc", strlen( "ntsc" ) ) )
{
p_sys->i_norm = VIDEO_MODE_NTSC;
psz_parser += strlen( "ntsc" );
}
else if( !strncmp( psz_parser, "secam", strlen( "secam" ) ) )
{
p_sys->i_norm = VIDEO_MODE_SECAM;
psz_parser += strlen( "secam" );
}
else if( !strncmp( psz_parser, "auto", strlen( "auto" ) ) )
{
p_sys->i_norm = VIDEO_MODE_AUTO;
psz_parser += strlen( "auto" );
}
else
{
p_sys->i_norm = strtol( psz_parser, &psz_parser, 0 );
}
}
else if( !strncmp( psz_parser, "frequency=",
strlen( "frequency=" ) ) )
{
p_sys->i_frequency =
strtol( psz_parser + strlen( "frequency=" ),
&psz_parser, 0 );
if( p_sys->i_frequency < 30000 )
{
msg_Warn( p_demux, "v4l syntax has changed : "
"'frequency' is now channel frequency in kHz");
}
}
else if( !strncmp( psz_parser, "audio=", strlen( "audio=" ) ) )
{
p_sys->i_audio = strtol( psz_parser + strlen( "audio=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "size=", strlen( "size=" ) ) )
{
psz_parser += strlen( "size=" );
if( !strncmp( psz_parser, "subqcif", strlen( "subqcif" ) ) )
{
p_sys->i_width = 128;
p_sys->i_height = 96;
}
else if( !strncmp( psz_parser, "qsif", strlen( "qsif" ) ) )
{
p_sys->i_width = 160;
p_sys->i_height = 120;
}
else if( !strncmp( psz_parser, "qcif", strlen( "qcif" ) ) )
{
p_sys->i_width = 176;
p_sys->i_height = 144;
}
else if( !strncmp( psz_parser, "sif", strlen( "sif" ) ) )
{
p_sys->i_width = 320;
p_sys->i_height = 244;
}
else if( !strncmp( psz_parser, "cif", strlen( "cif" ) ) )
{
p_sys->i_width = 352;
p_sys->i_height = 288;
}
else if( !strncmp( psz_parser, "vga", strlen( "vga" ) ) )
{
p_sys->i_width = 640;
p_sys->i_height = 480;
}
else
{
/* widthxheight */
p_sys->i_width = strtol( psz_parser, &psz_parser, 0 );
if( *psz_parser == 'x' || *psz_parser == 'X')
{
p_sys->i_height = strtol( psz_parser + 1,
&psz_parser, 0 );
}
msg_Dbg( p_demux, "WxH %dx%d", p_sys->i_width,
p_sys->i_height );
}
}
else if( !strncmp( psz_parser, "brightness=", strlen( "brightness=" ) ) )
{
p_sys->i_brightness = strtol( psz_parser + strlen( "brightness=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "colour=", strlen( "colour=" ) ) )
{
p_sys->i_colour = strtol( psz_parser + strlen( "colour=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "hue=", strlen( "hue=" ) ) )
{
p_sys->i_hue = strtol( psz_parser + strlen( "hue=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "contrast=", strlen( "contrast=" ) ) )
{
p_sys->i_contrast = strtol( psz_parser + strlen( "contrast=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "tuner=", strlen( "tuner=" ) ) )
{
p_sys->i_tuner = strtol( psz_parser + strlen( "tuner=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "mjpeg", strlen( "mjpeg" ) ) )
{
psz_parser += strlen( "mjpeg" );
p_sys->b_mjpeg = true;
}
else if( !strncmp( psz_parser, "decimation=",
strlen( "decimation=" ) ) )
{
p_sys->i_decimation =
strtol( psz_parser + strlen( "decimation=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "quality=",
strlen( "quality=" ) ) )
{
p_sys->i_quality =
strtol( psz_parser + strlen( "quality=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "fps=", strlen( "fps=" ) ) )
{
p_sys->f_fps = us_strtof( psz_parser + strlen( "fps=" ),
&psz_parser );
}
else if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) )
|| !strncmp( psz_parser, "samplerate=", strlen( "samplerate=" ) )
|| !strncmp( psz_parser, "stereo", strlen( "stereo" ) )
|| !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
{
if( strchr( psz_parser, ':' ) )
psz_parser = strchr( psz_parser, ':' );
else
psz_parser += strlen( psz_parser );
msg_Err( p_demux, AUDIO_DEPRECATED_ERROR );
}
else
{
msg_Warn( p_demux, "unknown option" );
}
while( *psz_parser && *psz_parser != ':' )
{
psz_parser++;
}
if( *psz_parser == '\0' )
{
break;
}
}
}
if( *psz_dup )
p_sys->psz_device = strdup( psz_dup );
else
p_sys->psz_device = strdup( V4L_DEFAULT );
free( psz_dup );
}
/*****************************************************************************
* OpenVideoDev:
*****************************************************************************/
static int OpenVideoDev( demux_t *p_demux, char *psz_device )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_fd;
struct video_channel vid_channel;
struct mjpeg_params mjpeg;
int i;
if( ( i_fd = v4l1_open( psz_device, O_RDWR ) ) < 0 )
{
msg_Err( p_demux, "cannot open device (%m)" );
goto vdev_failed;
}
if( v4l1_ioctl( i_fd, VIDIOCGCAP, &p_sys->vid_cap ) < 0 )
{
msg_Err( p_demux, "cannot get capabilities (%m)" );
goto vdev_failed;
}
msg_Dbg( p_demux,
"V4L device %s %d channels %d audios %d < w < %d %d < h < %d",
p_sys->vid_cap.name,
p_sys->vid_cap.channels,
p_sys->vid_cap.audios,
p_sys->vid_cap.minwidth, p_sys->vid_cap.maxwidth,
p_sys->vid_cap.minheight, p_sys->vid_cap.maxheight );
if( p_sys->i_channel < 0 || p_sys->i_channel >= p_sys->vid_cap.channels )
{
msg_Dbg( p_demux, "invalid channel, falling back on channel 0" );
p_sys->i_channel = 0;
}
if( p_sys->vid_cap.audios && p_sys->i_audio >= p_sys->vid_cap.audios )
{
msg_Dbg( p_demux, "invalid audio, falling back with no audio" );
p_sys->i_audio = -1;
}
if( p_sys->i_width < p_sys->vid_cap.minwidth ||
p_sys->i_width > p_sys->vid_cap.maxwidth )
{
msg_Dbg( p_demux, "invalid width %i", p_sys->i_width );
p_sys->i_width = 0;
}
if( p_sys->i_height < p_sys->vid_cap.minheight ||
p_sys->i_height > p_sys->vid_cap.maxheight )
{
msg_Dbg( p_demux, "invalid height %i", p_sys->i_height );
p_sys->i_height = 0;
}
if( !( p_sys->vid_cap.type & VID_TYPE_CAPTURE ) )
{
msg_Err( p_demux, "cannot grab" );
goto vdev_failed;
}
vid_channel.channel = p_sys->i_channel;
if( v4l1_ioctl( i_fd, VIDIOCGCHAN, &vid_channel ) < 0 )
{
msg_Err( p_demux, "cannot get channel infos (%m)" );
goto vdev_failed;
}
msg_Dbg( p_demux,
"setting channel %s(%d) %d tuners flags=0x%x type=0x%x norm=0x%x",
vid_channel.name, vid_channel.channel, vid_channel.tuners,
vid_channel.flags, vid_channel.type, vid_channel.norm );
if( p_sys->i_tuner >= vid_channel.tuners )
{
msg_Dbg( p_demux, "invalid tuner, falling back on tuner 0" );
p_sys->i_tuner = 0;
}
vid_channel.norm = p_sys->i_norm;
if( v4l1_ioctl( i_fd, VIDIOCSCHAN, &vid_channel ) < 0 )
{
msg_Err( p_demux, "cannot set channel (%m)" );
goto vdev_failed;
}
if( vid_channel.flags & VIDEO_VC_TUNER )
{
/* set tuner */
#if 0
struct video_tuner vid_tuner;
if( p_sys->i_tuner >= 0 )
{
vid_tuner.tuner = p_sys->i_tuner;
if( v4l1_ioctl( i_fd, VIDIOCGTUNER, &vid_tuner ) < 0 )
{
msg_Err( p_demux, "cannot get tuner (%m)" );
goto vdev_failed;
}
msg_Dbg( p_demux, "tuner %s low=%d high=%d, flags=0x%x "
"mode=0x%x signal=0x%x",
vid_tuner.name, vid_tuner.rangelow, vid_tuner.rangehigh,
vid_tuner.flags, vid_tuner.mode, vid_tuner.signal );
msg_Dbg( p_demux, "setting tuner %s (%d)",
vid_tuner.name, vid_tuner.tuner );
/* FIXME FIXME to be checked FIXME FIXME */
//vid_tuner.mode = p_sys->i_norm;
if( v4l1_ioctl( i_fd, VIDIOCSTUNER, &vid_tuner ) < 0 )
{
msg_Err( p_demux, "cannot set tuner (%m)" );
goto vdev_failed;
}
}
#endif
/* Show a warning if frequency is < than 30000.
* User is certainly usint old syntax. */
/* set frequency */
if( p_sys->i_frequency >= 0 )
{
int driver_frequency = p_sys->i_frequency * 16 /1000;
if( v4l1_ioctl( i_fd, VIDIOCSFREQ, &driver_frequency ) < 0 )
{
msg_Err( p_demux, "cannot set frequency (%m)" );
goto vdev_failed;
}
msg_Dbg( p_demux, "frequency %d (%d)", p_sys->i_frequency,
driver_frequency );
}
}
/* set audio */
if( vid_channel.flags & VIDEO_VC_AUDIO )
{
struct video_audio vid_audio;
/* XXX TODO volume, balance, ... */
if( p_sys->i_audio >= 0 )
{
vid_audio.audio = p_sys->i_audio;
if( v4l1_ioctl( i_fd, VIDIOCGAUDIO, &vid_audio ) < 0 )
{
msg_Err( p_demux, "cannot get audio (%m)" );
goto vdev_failed;
}
/* unmute audio */
vid_audio.flags &= ~VIDEO_AUDIO_MUTE;
if( v4l1_ioctl( i_fd, VIDIOCSAUDIO, &vid_audio ) < 0 )
{
msg_Err( p_demux, "cannot set audio (%m)" );
goto vdev_failed;
}
}
}
/* establish basic params with input and norm before feeling width
* or height */
if( p_sys->b_mjpeg )
{
struct quicktime_mjpeg_app1 p_app1;
int32_t i_offset;
if( v4l1_ioctl( i_fd, MJPIOC_G_PARAMS, &mjpeg ) < 0 )
{
msg_Err( p_demux, "cannot get mjpeg params (%m)" );
goto vdev_failed;
}
mjpeg.input = p_sys->i_channel;
mjpeg.norm = p_sys->i_norm;
mjpeg.decimation = p_sys->i_decimation;
if( p_sys->i_width )
mjpeg.img_width = p_sys->i_width / p_sys->i_decimation;
if( p_sys->i_height )
mjpeg.img_height = p_sys->i_height / p_sys->i_decimation;
/* establish Quicktime APP1 marker while we are here */
mjpeg.APPn = 1;
mjpeg.APP_len = 40;
/* aligned */
p_app1.i_reserved = 0;
p_app1.i_tag = VLC_FOURCC( 'm','j','p','g' );
p_app1.i_field_size = 0;
p_app1.i_padded_field_size = 0;
p_app1.i_next_field = 0;
/* XXX WARNING XXX */
/* these's nothing magic about these values. We are dangerously
* assuming the encoder card is encoding mjpeg-a and is not throwing
* in marker tags we aren't expecting. It's bad enough we have to
* search through the jpeg output for every frame we grab just to
* find the first field's end marker, so we take this risk to boost
* performance.
* This is really something the driver could do for us because this
* does conform to standards outside of Apple Quicktime.
*/
i_offset = 0x2e;
p_app1.i_DQT_offset = hton32( i_offset );
i_offset = 0xb4;
p_app1.i_DHT_offset = hton32( i_offset );
i_offset = 0x258;
p_app1.i_SOF_offset = hton32( i_offset );
i_offset = 0x26b;
p_app1.i_SOS_offset = hton32( i_offset );
i_offset = 0x279;
p_app1.i_data_offset = hton32( i_offset );
memcpy(mjpeg.APP_data, &p_app1, sizeof(struct quicktime_mjpeg_app1));
/* SOF and SOS aren't specified by the mjpeg API because they aren't
* optional. They will be present in the output. */
mjpeg.jpeg_markers = JPEG_MARKER_DHT | JPEG_MARKER_DQT;
if( v4l1_ioctl( i_fd, MJPIOC_S_PARAMS, &mjpeg ) < 0 )
{
msg_Err( p_demux, "cannot set mjpeg params (%m)" );
goto vdev_failed;
}
p_sys->i_width = mjpeg.img_width * mjpeg.HorDcm;
p_sys->i_height = mjpeg.img_height * mjpeg.VerDcm *
mjpeg.field_per_buff;
}
/* fix width/height */
if( !p_sys->b_mjpeg && ( p_sys->i_width == 0 || p_sys->i_height == 0 ) )
{
struct video_window vid_win;
if( v4l1_ioctl( i_fd, VIDIOCGWIN, &vid_win ) < 0 )
{
msg_Err( p_demux, "cannot get win (%m)" );
goto vdev_failed;
}
p_sys->i_width = vid_win.width;
p_sys->i_height = vid_win.height;
if( !p_sys->i_width || !p_sys->i_height )
{
p_sys->i_width = p_sys->vid_cap.maxwidth;
p_sys->i_height = p_sys->vid_cap.maxheight;
}
if( !p_sys->i_width || !p_sys->i_height )
{
msg_Err( p_demux, "invalid video size (%ix%i)",
p_sys->i_width, p_sys->i_height );
goto vdev_failed;
}
msg_Dbg( p_demux, "will use %dx%d", p_sys->i_width, p_sys->i_height );
}
if( !p_sys->b_mjpeg )
{
/* set hue/color/.. */
if( v4l1_ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
{
struct video_picture vid_picture = p_sys->vid_picture;
if( p_sys->i_brightness >= 0 && p_sys->i_brightness < 65536 )
{
vid_picture.brightness = p_sys->i_brightness;
}
if( p_sys->i_colour >= 0 && p_sys->i_colour < 65536 )
{
vid_picture.colour = p_sys->i_colour;
}
if( p_sys->i_hue >= 0 && p_sys->i_hue < 65536 )
{
vid_picture.hue = p_sys->i_hue;
}
if( p_sys->i_contrast >= 0 && p_sys->i_contrast < 65536 )
{
vid_picture.contrast = p_sys->i_contrast;
}
if( v4l1_ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
{
msg_Dbg( p_demux, "v4l device uses brightness: %d",
vid_picture.brightness );
msg_Dbg( p_demux, "v4l device uses colour: %d",
vid_picture.colour );
msg_Dbg( p_demux, "v4l device uses hue: %d", vid_picture.hue );
msg_Dbg( p_demux, "v4l device uses contrast: %d",
vid_picture.contrast );
p_sys->vid_picture = vid_picture;
}
}
/* Find out video format used by device */
if( v4l1_ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
{
struct video_picture vid_picture = p_sys->vid_picture;
char *psz;
int i;
p_sys->i_fourcc = 0;
psz = var_CreateGetString( p_demux, "v4l-chroma" );
const vlc_fourcc_t i_chroma =
vlc_fourcc_GetCodecFromString( VIDEO_ES, psz );
if( i_chroma )
{
vid_picture.palette = 0;
/* Find out v4l chroma code */
for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
{
if( v4lchroma_to_fourcc[i].i_fourcc == i_chroma )
{
vid_picture.palette = v4lchroma_to_fourcc[i].i_v4l;
break;
}
}
}
free( psz );
if( vid_picture.palette &&
!v4l1_ioctl( i_fd, VIDIOCSPICT, &vid_picture ) )
{
p_sys->vid_picture = vid_picture;
}
else
{
/* Try to set the format to something easy to encode */
vid_picture.palette = VIDEO_PALETTE_YUV420P;
if( v4l1_ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
{
p_sys->vid_picture = vid_picture;
}
else
{
vid_picture.palette = VIDEO_PALETTE_YUV422P;
if( v4l1_ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
{
p_sys->vid_picture = vid_picture;
}
}
}
/* Find out final format */
for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
{
if( v4lchroma_to_fourcc[i].i_v4l == p_sys->vid_picture.palette)
{
p_sys->i_fourcc = v4lchroma_to_fourcc[i].i_fourcc;
break;
}
}
}
else
{
msg_Err( p_demux, "ioctl VIDIOCGPICT failed" );
goto vdev_failed;
}
}
if( p_sys->b_mjpeg )
{
int i;
p_sys->mjpeg_buffers.count = 8;
p_sys->mjpeg_buffers.size = MJPEG_BUFFER_SIZE;
if( v4l1_ioctl( i_fd, MJPIOC_REQBUFS, &p_sys->mjpeg_buffers ) < 0 )
{
msg_Err( p_demux, "mmap unsupported" );
goto vdev_failed;
}
p_sys->p_video_mmap = v4l1_mmap( 0,
p_sys->mjpeg_buffers.size * p_sys->mjpeg_buffers.count,
PROT_READ | PROT_WRITE, MAP_SHARED, i_fd, 0 );
if( p_sys->p_video_mmap == MAP_FAILED )
{
msg_Err( p_demux, "mmap failed" );
goto vdev_failed;
}
p_sys->i_fourcc = VLC_CODEC_MJPG;
p_sys->i_frame_pos = -1;
/* queue up all the frames */
for( i = 0; i < (int)p_sys->mjpeg_buffers.count; i++ )
{
if( v4l1_ioctl( i_fd, MJPIOC_QBUF_CAPT, &i ) < 0 )
{
msg_Err( p_demux, "unable to queue frame" );
goto vdev_failed;
}
}
}
else
{
/* Fill in picture_t fields */
if( picture_Setup( &p_sys->pic, p_sys->i_fourcc,
p_sys->i_width, p_sys->i_height,
1, 1 ) )
{
msg_Err( p_demux, "unsupported chroma" );
goto vdev_failed;
}
p_sys->i_video_frame_size = 0;
for( i = 0; i < p_sys->pic.i_planes; i++ )
{
p_sys->i_video_frame_size += p_sys->pic.p[i].i_visible_lines *
p_sys->pic.p[i].i_visible_pitch;
}
msg_Dbg( p_demux, "v4l device uses frame size: %i",
p_sys->i_video_frame_size );
msg_Dbg( p_demux, "v4l device uses chroma: %4.4s",
(char*)&p_sys->i_fourcc );
/* Allocate mmap buffer */
if( v4l1_ioctl( i_fd, VIDIOCGMBUF, &p_sys->vid_mbuf ) < 0 )
{
msg_Err( p_demux, "mmap unsupported" );
goto vdev_failed;
}
p_sys->p_video_mmap = v4l1_mmap( 0, p_sys->vid_mbuf.size,
PROT_READ|PROT_WRITE, MAP_SHARED,
i_fd, 0 );
if( p_sys->p_video_mmap == MAP_FAILED )
{
/* FIXME -> normal read */
msg_Err( p_demux, "mmap failed" );
goto vdev_failed;
}
/* init grabbing */
p_sys->vid_mmap.frame = 0;
p_sys->vid_mmap.width = p_sys->i_width;
p_sys->vid_mmap.height = p_sys->i_height;
p_sys->vid_mmap.format = p_sys->vid_picture.palette;
if( v4l1_ioctl( i_fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
{
msg_Warn( p_demux, "%4.4s refused", (char*)&p_sys->i_fourcc );
msg_Err( p_demux, "chroma selection failed" );
goto vdev_failed;
}
}
return i_fd;
vdev_failed:
if( i_fd >= 0 ) v4l1_close( i_fd );
return -1;
}
/*****************************************************************************
* GrabVideo:
*****************************************************************************/
static uint8_t *GrabCapture( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_captured_frame = p_sys->i_frame_pos;
p_sys->vid_mmap.frame = (p_sys->i_frame_pos + 1) % p_sys->vid_mbuf.frames;
while( v4l1_ioctl( p_sys->i_fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
{
if( errno != EAGAIN )
{
msg_Err( p_demux, "failed capturing new frame" );
return NULL;
}
if( !vlc_object_alive (p_demux) )
{
return NULL;
}
msg_Dbg( p_demux, "grab failed, trying again" );
}
while( v4l1_ioctl(p_sys->i_fd, VIDIOCSYNC, &p_sys->i_frame_pos) < 0 )
{
if( errno != EAGAIN && errno != EINTR )
{
msg_Err( p_demux, "failed syncing new frame" );
return NULL;
}
}
p_sys->i_frame_pos = p_sys->vid_mmap.frame;
/* leave i_video_frame_size alone */
return p_sys->p_video_mmap + p_sys->vid_mbuf.offsets[i_captured_frame];
}
static uint8_t *GrabMJPEG( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
struct mjpeg_sync sync;
uint8_t *p_frame, *p_field, *p;
uint16_t tag;
uint32_t i_size;
struct quicktime_mjpeg_app1 *p_app1 = NULL;
/* re-queue the last frame we sync'd */
if( p_sys->i_frame_pos != -1 )
{
while( v4l1_ioctl( p_sys->i_fd, MJPIOC_QBUF_CAPT,
&p_sys->i_frame_pos ) < 0 )
{
if( errno != EAGAIN && errno != EINTR )
{
msg_Err( p_demux, "failed capturing new frame" );
return NULL;
}
}
}
/* sync on the next frame */
while( v4l1_ioctl( p_sys->i_fd, MJPIOC_SYNC, &sync ) < 0 )
{
if( errno != EAGAIN && errno != EINTR )
{
msg_Err( p_demux, "failed syncing new frame" );
return NULL;
}
}
p_sys->i_frame_pos = sync.frame;
p_frame = p_sys->p_video_mmap + p_sys->mjpeg_buffers.size * sync.frame;
/* p_frame now points to the data. fix up the Quicktime APP1 marker */
tag = 0xffd9;
tag = hton16( tag );
p_field = p_frame;
/* look for EOI */
p = memmem( p_field, sync.length, &tag, 2 );
if( p )
{
p += 2; /* data immediately following EOI */
/* UNALIGNED! */
p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
i_size = ((uint32_t)(p - p_field));
i_size = hton32( i_size );
memcpy( &p_app1->i_field_size, &i_size, 4 );
while( *p == 0xff && *(p+1) == 0xff )
p++;
i_size = ((uint32_t)(p - p_field));
i_size = hton32( i_size );
memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
}
tag = 0xffd8;
tag = hton16( tag );
p_field = memmem( p, sync.length - (size_t)(p - p_frame), &tag, 2 );
if( p_field )
{
i_size = (uint32_t)(p_field - p_frame);
i_size = hton32( i_size );
memcpy( &p_app1->i_next_field, &i_size, 4 );
/* UNALIGNED! */
p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
tag = 0xffd9;
tag = hton16( tag );
p = memmem( p_field, sync.length - (size_t)(p_field - p_frame),
&tag, 2 );
if( !p )
{
/* sometimes the second field doesn't have the EOI. just put it
* there
*/
p = p_frame + sync.length;
memcpy( p, &tag, 2 );
sync.length += 2;
}
p += 2;
i_size = (uint32_t)(p - p_field);
i_size = hton32( i_size );
memcpy( &p_app1->i_field_size, &i_size, 4 );
i_size = (uint32_t)(sync.length - (uint32_t)(p_field - p_frame));
i_size = hton32( i_size );
memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
}
p_sys->i_video_frame_size = sync.length;
return p_frame;
}
static block_t *GrabVideo( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
uint8_t *p_frame;
block_t *p_block;
if( p_sys->f_fps >= 0.1 && p_sys->i_video_pts > 0 )
{
mtime_t i_dur = (mtime_t)((double)1000000 / (double)p_sys->f_fps);
/* Did we wait long enough ? (frame rate reduction) */
if( p_sys->i_video_pts + i_dur > mdate() ) return 0;
}
if( p_sys->b_mjpeg ) p_frame = GrabMJPEG( p_demux );
else p_frame = GrabCapture( p_demux );
if( !p_frame ) return 0;
if( !( p_block = block_New( p_demux, p_sys->i_video_frame_size ) ) )
{
msg_Warn( p_demux, "cannot get block" );
return 0;
}
memcpy( p_block->p_buffer, p_frame, p_sys->i_video_frame_size );
p_sys->i_video_pts = p_block->i_pts = p_block->i_dts = mdate();
return p_block;
}
modules/access/videodev_mjpeg.h deleted 100644 → 0
View file @ c23388a9
/*****************************************************************************
* Copyright (C) lavrec (see http://mjpeg.sourceforge.net)
* ( XXX This file was get from the driver-zoran package and it is under GPL)
*
* $Id$
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/* These are the MJPEG API extensions for the Video4Linux API,
first introduced by the Iomega Buz driver by Rainer Johanni
<rainer@johanni.de>
*/
/* This is identical with the mgavideo internal params struct,
please tell me if you change this struct here ! <gz@lysator.liu.se) */
struct mjpeg_params
{
/* The following parameters can only be queried */
int major_version; /* Major version number of driver */
int minor_version; /* Minor version number of driver */
/* Main control parameters */
int input; /* Input channel: 0 = Composite, 1 = S-VHS */
int norm; /* Norm: VIDEO_MODE_PAL or VIDEO_MODE_NTSC */
int decimation; /* decimation of captured video,
enlargement of video played back.
Valid values are 1, 2, 4 or 0.
0 is a special value where the user
has full control over video scaling */
/* The following parameters only have to be set if decimation==0,
for other values of decimation they provide the data how the image is captured */
int HorDcm; /* Horizontal decimation: 1, 2 or 4 */
int VerDcm; /* Vertical decimation: 1 or 2 */
int TmpDcm; /* Temporal decimation: 1 or 2,
if TmpDcm==2 in capture every second frame is dropped,
in playback every frame is played twice */
int field_per_buff; /* Number of fields per buffer: 1 or 2 */
int img_x; /* start of image in x direction */
int img_y; /* start of image in y direction */
int img_width; /* image width BEFORE decimation,
must be a multiple of HorDcm*16 */
int img_height; /* image height BEFORE decimation,
must be a multiple of VerDcm*8 */
/* --- End of parameters for decimation==0 only --- */
/* JPEG control parameters */
int quality; /* Measure for quality of compressed images.
Scales linearly with the size of the compressed images.
Must be beetween 0 and 100, 100 is a compression
ratio of 1:4 */
int odd_even; /* Which field should come first ???
This is more aptly named "top_first",
i.e. (odd_even==1) --> top-field-first */
int APPn; /* Number of APP segment to be written, must be 0..15 */
int APP_len; /* Length of data in JPEG APPn segment */
char APP_data[60]; /* Data in the JPEG APPn segment. */
int COM_len; /* Length of data in JPEG COM segment */
char COM_data[60]; /* Data in JPEG COM segment */
unsigned long jpeg_markers; /* Which markers should go into the JPEG output.
Unless you exactly know what you do, leave them untouched.
Inluding less markers will make the resulting code
smaller, but there will be fewer aplications
which can read it.
The presence of the APP and COM marker is
influenced by APP0_len and COM_len ONLY! */
#define JPEG_MARKER_DHT (1<<3) /* Define Huffman Tables */
#define JPEG_MARKER_DQT (1<<4) /* Define Quantization Tables */
#define JPEG_MARKER_DRI (1<<5) /* Define Restart Interval */
#define JPEG_MARKER_COM (1<<6) /* Comment segment */
#define JPEG_MARKER_APP (1<<7) /* App segment, driver will allways use APP0 */
int VFIFO_FB; /* Flag for enabling Video Fifo Feedback.
If this flag is turned on and JPEG decompressing
is going to the screen, the decompress process
is stopped every time the Video Fifo is full.
This enables a smooth decompress to the screen
but the video output signal will get scrambled */
/* Misc */
char reserved[312]; /* Makes 512 bytes for this structure */
};
struct mjpeg_requestbuffers
{
unsigned long count; /* Number of buffers for MJPEG grabbing */
unsigned long size; /* Size PER BUFFER in bytes */
};
struct mjpeg_sync
{
unsigned long frame; /* Frame (0 - n) for double buffer */
unsigned long length; /* number of code bytes in buffer (capture only) */
unsigned long seq; /* frame sequence number */
struct timeval timestamp; /* timestamp */
};
struct mjpeg_status
{
int input; /* Input channel, has to be set prior to BUZIOC_G_STATUS */
int signal; /* Returned: 1 if valid video signal detected */
int norm; /* Returned: VIDEO_MODE_PAL or VIDEO_MODE_NTSC */
int color; /* Returned: 1 if color signal detected */
};
/*
Private IOCTL to set up for displaying MJPEG
*/
#define MJPIOC_G_PARAMS _IOR ('v', BASE_VIDIOCPRIVATE+0, struct mjpeg_params)
#define MJPIOC_S_PARAMS _IOWR('v', BASE_VIDIOCPRIVATE+1, struct mjpeg_params)
#define MJPIOC_REQBUFS _IOWR('v', BASE_VIDIOCPRIVATE+2, struct mjpeg_requestbuffers)
#define MJPIOC_QBUF_CAPT _IOW ('v', BASE_VIDIOCPRIVATE+3, int)
#define MJPIOC_QBUF_PLAY _IOW ('v', BASE_VIDIOCPRIVATE+4, int)
#define MJPIOC_SYNC _IOR ('v', BASE_VIDIOCPRIVATE+5, struct mjpeg_sync)
#define MJPIOC_G_STATUS _IOWR('v', BASE_VIDIOCPRIVATE+6, struct mjpeg_status)
po/POTFILES.in
View file @ 657fff36
......@@ -276,7 +276,6 @@ modules/access/sftp.c
modules/access/smb.c
modules/access/tcp.c
modules/access/udp.c
modules/access/v4l.c
modules/access/v4l2.c
modules/access/vcd/cdrom.c
modules/access/vcd/cdrom.h
......@@ -290,7 +289,6 @@ modules/access/vcdx/vcd.h
modules/access/vcdx/vcdplayer.c
modules/access/vcdx/vcdplayer.h
modules/access/videodev2.h
modules/access/videodev_mjpeg.h
modules/access/zip/zipstream.c
modules/access_output/bonjour.c
modules/access_output/bonjour.h
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment