You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
244 lines
7.5 KiB
244 lines
7.5 KiB
/*****************************************************************************
|
|
* flaschentaschen.c: Flaschen-Taschen video output display for vlc
|
|
* cf. https://github.com/hzeller/flaschen-taschen
|
|
*****************************************************************************
|
|
* Copyright (C) 2000-2009 VLC authors and VideoLAN
|
|
* Copyright (C) 2016 François Revol <revol@free.fr>
|
|
*
|
|
* Includes code from vdummy.c and aa.c:
|
|
* Authors: Samuel Hocevar <sam@zoy.org>
|
|
* Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 2.1 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser 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 <errno.h>
|
|
#ifdef HAVE_SYS_UIO_H
|
|
# include <sys/uio.h>
|
|
#endif
|
|
|
|
#include <vlc_common.h>
|
|
#include <vlc_fs.h>
|
|
#include <vlc_network.h>
|
|
#include <vlc_plugin.h>
|
|
#include <vlc_vout_display.h>
|
|
|
|
#define T_FLDISPLAY N_("Flaschen-Taschen display address")
|
|
#define LT_FLDISPLAY N_( \
|
|
"IP address or hostname of the Flaschen-Taschen display. " \
|
|
"Something like ft.noise or ftkleine.noise")
|
|
|
|
#define T_WIDTH N_("Width")
|
|
#define LT_WIDTH NULL
|
|
|
|
#define T_HEIGHT N_("Height")
|
|
#define LT_HEIGHT NULL
|
|
|
|
#define T_OFFSET_X N_("Offset X")
|
|
#define LT_OFFSET_X NULL
|
|
|
|
#define T_OFFSET_Y N_("Offset Y")
|
|
#define LT_OFFSET_Y NULL
|
|
|
|
#define T_OFFSET_Z N_("Offset Z")
|
|
#define LT_OFFSET_Z NULL
|
|
|
|
static int Open(vout_display_t *vd,
|
|
video_format_t *fmtp, vlc_video_context *context);
|
|
static void Close(vout_display_t *vd);
|
|
|
|
vlc_module_begin ()
|
|
set_shortname( N_("Flaschen") )
|
|
set_description( N_("Flaschen-Taschen video output") )
|
|
set_callback_display( Open, 0 )
|
|
add_shortcut( "flaschen" )
|
|
|
|
set_subcategory( SUBCAT_VIDEO_VOUT )
|
|
add_string( "flaschen-display", NULL, T_FLDISPLAY, LT_FLDISPLAY )
|
|
add_integer("flaschen-width", 25, T_WIDTH, LT_WIDTH)
|
|
add_integer("flaschen-height", 20, T_HEIGHT, LT_HEIGHT)
|
|
add_integer("flaschen-offset-x", 0, T_OFFSET_X, LT_OFFSET_X)
|
|
add_integer("flaschen-offset-y", 0, T_OFFSET_Y, LT_OFFSET_Y)
|
|
add_integer("flaschen-offset-z", 0, T_OFFSET_Z, LT_OFFSET_Z)
|
|
vlc_module_end ()
|
|
|
|
|
|
/*****************************************************************************
|
|
* Local prototypes
|
|
*****************************************************************************/
|
|
typedef struct vout_display_sys_t {
|
|
int fd;
|
|
} vout_display_sys_t;
|
|
static void Display(vout_display_t *, picture_t *);
|
|
static int Control(vout_display_t *, int);
|
|
|
|
static const struct vlc_display_operations ops = {
|
|
.close = Close,
|
|
.display = Display,
|
|
.control = Control,
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* Open: activates flaschen vout display method
|
|
*****************************************************************************/
|
|
static int Open(vout_display_t *vd,
|
|
video_format_t *fmtp, vlc_video_context *context)
|
|
{
|
|
vout_display_sys_t *sys;
|
|
int fd;
|
|
const unsigned port = 1337;
|
|
|
|
vd->sys = sys = calloc(1, sizeof(*sys));
|
|
if (!sys)
|
|
return VLC_ENOMEM;
|
|
sys->fd = -1;
|
|
|
|
/* */
|
|
video_format_t fmt = *fmtp;
|
|
/* TODO: check if this works on big-endian systems */
|
|
fmt.i_chroma = VLC_CODEC_RGB24;
|
|
fmt.i_width = var_InheritInteger(vd, "flaschen-width");
|
|
fmt.i_height = var_InheritInteger(vd, "flaschen-height");
|
|
fmt.i_visible_width = fmt.i_width;
|
|
fmt.i_visible_height = fmt.i_height;
|
|
fmt.orientation = ORIENT_NORMAL;
|
|
|
|
/* p_vd->info is not modified */
|
|
|
|
char *display = var_InheritString(vd, "flaschen-display");
|
|
if (display == NULL) {
|
|
msg_Err(vd, "missing flaschen-display");
|
|
free(sys);
|
|
return VLC_EGENERIC;
|
|
}
|
|
msg_Dbg(vd, "using display at %s (%dx%d)", display, fmt.i_width, fmt.i_height);
|
|
|
|
fd = net_ConnectDgram( vd, display, port, -1, IPPROTO_UDP );
|
|
|
|
if( fd == -1 )
|
|
{
|
|
msg_Err( vd,
|
|
"cannot create UDP socket for %s port %u",
|
|
display, port );
|
|
free(display);
|
|
free(sys);
|
|
return VLC_EGENERIC;
|
|
}
|
|
free(display);
|
|
sys->fd = fd;
|
|
|
|
/* Ignore any unexpected incoming packet */
|
|
setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &(int){ 0 }, sizeof (int));
|
|
|
|
|
|
*fmtp = fmt;
|
|
|
|
vd->ops = &ops;
|
|
|
|
(void) context;
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
static void Close(vout_display_t *vd)
|
|
{
|
|
vout_display_sys_t *sys = vd->sys;
|
|
|
|
net_Close(sys->fd);
|
|
free(sys);
|
|
}
|
|
|
|
static void Display(vout_display_t *vd, picture_t *picture)
|
|
{
|
|
#ifdef IOV_MAX
|
|
const long iovmax = IOV_MAX;
|
|
#else
|
|
const long iovmax = sysconf(_SC_IOV_MAX);
|
|
#endif
|
|
vout_display_sys_t *sys = vd->sys;
|
|
video_format_t *fmt = &picture->format;
|
|
int result;
|
|
|
|
char buffer[64];
|
|
int header_len;
|
|
int offset_x = var_InheritInteger(vd, "flaschen-offset-x");
|
|
int offset_y = var_InheritInteger(vd, "flaschen-offset-y");
|
|
int offset_z = var_InheritInteger(vd, "flaschen-offset-z");
|
|
|
|
if (offset_x || offset_y || offset_z)
|
|
header_len = snprintf(buffer, sizeof(buffer), "P6\n%d %d\n#FT: %d %d %d\n255\n",
|
|
fmt->i_width, fmt->i_height, offset_x, offset_y, offset_z);
|
|
else
|
|
header_len = snprintf(buffer, sizeof(buffer), "P6\n%d %d\n255\n",
|
|
fmt->i_width, fmt->i_height);
|
|
/* Note the protocol doesn't include any picture order field. */
|
|
/* (maybe add as comment?) */
|
|
|
|
int iovcnt = 1 + fmt->i_height;
|
|
if (unlikely(iovcnt > iovmax))
|
|
return;
|
|
|
|
struct iovec iov[iovcnt];
|
|
iov[0].iov_base = buffer;
|
|
iov[0].iov_len = header_len;
|
|
|
|
uint8_t *src = picture->p->p_pixels;
|
|
for (int i = 1; i < iovcnt; i++)
|
|
{
|
|
iov[i].iov_base = src;
|
|
iov[i].iov_len = fmt->i_width * 3;
|
|
src += picture->p->i_pitch;
|
|
}
|
|
|
|
struct msghdr hdr = {
|
|
.msg_name = NULL,
|
|
.msg_namelen = 0,
|
|
.msg_iov = iov,
|
|
.msg_iovlen = iovcnt,
|
|
.msg_control = NULL,
|
|
.msg_controllen = 0,
|
|
.msg_flags = 0 };
|
|
|
|
result = sendmsg(sys->fd, &hdr, 0);
|
|
if (result < 0)
|
|
msg_Err(vd, "sendmsg: error %s in vout display flaschen", vlc_strerror_c(errno));
|
|
else if (result < (int)(header_len + fmt->i_width * fmt->i_height * 3))
|
|
msg_Err(vd, "sendmsg only sent %d bytes in vout display flaschen", result);
|
|
/* we might want to drop some frames? */
|
|
}
|
|
|
|
/**
|
|
* Control for vout display
|
|
*/
|
|
static int Control(vout_display_t *vd, int query)
|
|
{
|
|
switch (query) {
|
|
case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
|
|
case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
|
|
case VOUT_DISPLAY_CHANGE_SOURCE_PLACE:
|
|
return VLC_SUCCESS;
|
|
|
|
default:
|
|
msg_Err(vd, "Unsupported query in vout display flaschen");
|
|
return VLC_EGENERIC;
|
|
}
|
|
}
|
|
|