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vlc/modules/access/dc1394.c

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/*****************************************************************************
* dc1394.c: IIDC (DCAM) FireWire input module
*****************************************************************************
* Copyright (C) 2006-2009 VideoLAN
*
* Authors: Xant Majere <xant@xant.net>
* Rob Shortt <rob@tvcentric.com> - libdc1394 V2 API updates
* Frederic Benoist <fridorik@gmail.com> - updates from Rob's work
*
*****************************************************************************
*
* 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 <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <dc1394/dc1394.h>
#define MAX_IEEE1394_HOSTS 32
#define MAX_CAMERA_NODES 32
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin()
set_shortname( N_("DC1394") )
set_description( N_("IIDC Digital Camera (FireWire) input") )
set_capability( "access", 0 )
set_callbacks( Open, Close )
vlc_module_end()
typedef struct
{
/* camera info */
dc1394_t *p_dccontext;
uint32_t num_cameras;
dc1394camera_t *camera;
int selected_camera;
uint64_t selected_uid;
uint32_t dma_buffers;
dc1394featureset_t features;
bool reset_bus;
/* video info */
char *video_device;
dc1394video_mode_t video_mode;
int width;
int height;
int frame_size;
int frame_rate;
unsigned int brightness;
unsigned int focus;
es_out_id_t *p_es_video;
dc1394video_frame_t *frame;
} demux_sys_t;
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Demux( demux_t *p_demux );
static int Control( demux_t *, int, va_list );
static block_t *GrabVideo( demux_t *p_demux );
static int process_options( demux_t *p_demux);
/*****************************************************************************
* FindCameras
*****************************************************************************/
static int FindCamera( demux_sys_t *sys, demux_t *p_demux )
{
dc1394camera_list_t *list;
int i_ret = VLC_EGENERIC;
msg_Dbg( p_demux, "Scanning for ieee1394 ports ..." );
if( dc1394_camera_enumerate (sys->p_dccontext, &list) != DC1394_SUCCESS )
{
msg_Err(p_demux, "Can not ennumerate cameras");
goto end;
}
if( list->num == 0 )
{
msg_Err(p_demux, "Can not find cameras");
goto end;
}
sys->num_cameras = list->num;
msg_Dbg( p_demux, "Found %d dc1394 cameras.", list->num);
if( sys->selected_uid )
{
int found = 0;
for( unsigned i = 0; i < sys->num_cameras; i++ )
{
if( list->ids[i].guid == sys->selected_uid )
{
sys->camera = dc1394_camera_new(sys->p_dccontext,
list->ids[i].guid);
found++;
break;
}
}
if( !found )
{
msg_Err( p_demux, "Can't find camera with uid : 0x%"PRIx64".",
sys->selected_uid );
goto end;
}
}
else if( sys->selected_camera >= (int)list->num )
{
msg_Err( p_demux, "There are not this many cameras. (%d/%d)",
sys->selected_camera, sys->num_cameras );
goto end;
}
else if( sys->selected_camera >= 0 )
{
sys->camera = dc1394_camera_new(sys->p_dccontext,
list->ids[sys->selected_camera].guid);
}
else
{
sys->camera = dc1394_camera_new(sys->p_dccontext,
list->ids[0].guid);
}
i_ret = VLC_SUCCESS;
end:
dc1394_camera_free_list (list);
return i_ret;
}
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
es_format_t fmt;
dc1394error_t res;
if (p_demux->out == NULL)
return VLC_EGENERIC;
/* Set up p_demux */
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys = vlc_obj_calloc( p_this, 1, sizeof( demux_sys_t ) );
if( !p_sys )
return VLC_ENOMEM;
memset( &fmt, 0, sizeof( es_format_t ) );
/* DEFAULTS */
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
p_sys->width = 640;
p_sys->height = 480;
p_sys->frame_rate = DC1394_FRAMERATE_15;
p_sys->brightness = 200;
p_sys->focus = 0;
p_sys->p_dccontext = NULL;
p_sys->camera = NULL;
p_sys->selected_camera = -1;
p_sys->dma_buffers = 1;
p_sys->reset_bus = 0;
/* PROCESS INPUT OPTIONS */
if( process_options(p_demux) != VLC_SUCCESS )
{
msg_Err( p_demux, "Bad MRL, please check the option line "
"(MRL was: %s)",
p_demux->psz_location );
return VLC_EGENERIC;
}
p_sys->p_dccontext = dc1394_new();
if( !p_sys->p_dccontext )
{
msg_Err( p_demux, "Failed to initialise libdc1394");
return VLC_EGENERIC;
}
if( FindCamera( p_sys, p_demux ) != VLC_SUCCESS )
{
dc1394_free( p_sys->p_dccontext );
return VLC_EGENERIC;
}
if( !p_sys->camera )
{
msg_Err( p_demux, "No camera found !!" );
dc1394_free( p_sys->p_dccontext );
return VLC_EGENERIC;
}
if( p_sys->reset_bus )
{
if( dc1394_reset_bus( p_sys->camera ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to reset IEEE 1394 bus");
Close( p_this );
return VLC_EGENERIC;
}
else msg_Dbg( p_demux, "Successfully reset IEEE 1394 bus");
}
if( dc1394_camera_reset( p_sys->camera ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to reset camera");
Close( p_this );
return VLC_EGENERIC;
}
if( dc1394_camera_print_info( p_sys->camera,
stderr ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to print camera info");
Close( p_this );
return VLC_EGENERIC;
}
if( dc1394_feature_get_all( p_sys->camera,
&p_sys->features ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to get feature set");
Close( p_this );
return VLC_EGENERIC;
}
// TODO: only print features if verbosity increased
dc1394_feature_print_all(&p_sys->features, stderr);
#if 0 //"Note that you need to execute this function only if you use exotic video1394 device names. /dev/video1394, /dev/video1394/* and /dev/video1394-* are automatically recognized." http://damien.douxchamps.net/ieee1394/libdc1394/v2.x/api/capture/
if( p_sys->video_device )
{
if( dc1394_capture_set_device_filename( p_sys->camera,
p_sys->video_device ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to set video device");
Close( p_this );
return VLC_EGENERIC;
}
}
#endif
if( p_sys->focus )
{
if( dc1394_feature_set_value( p_sys->camera,
DC1394_FEATURE_FOCUS,
p_sys->focus ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to set initial focus to %u",
p_sys->focus );
}
else
msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
}
if( dc1394_feature_set_value( p_sys->camera,
DC1394_FEATURE_FOCUS,
p_sys->brightness ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to set initial brightness to %u",
p_sys->brightness );
}
else
msg_Dbg( p_demux, "Initial brightness set to %u", p_sys->brightness );
if( dc1394_video_set_framerate( p_sys->camera,
p_sys->frame_rate ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to set framerate");
Close( p_this );
return VLC_EGENERIC;
}
if( dc1394_video_set_mode( p_sys->camera,
p_sys->video_mode ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to set video mode");
Close( p_this );
return VLC_EGENERIC;
}
if( dc1394_video_set_iso_speed( p_sys->camera,
DC1394_ISO_SPEED_400 ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to set iso speed");
Close( p_this );
return VLC_EGENERIC;
}
/* and setup capture */
res = dc1394_capture_setup( p_sys->camera,
p_sys->dma_buffers,
DC1394_CAPTURE_FLAGS_DEFAULT);
if( res != DC1394_SUCCESS )
{
if( res == DC1394_NO_BANDWIDTH )
{
msg_Err( p_demux ,"No bandwidth: try adding the "
"\"resetbus\" option" );
}
else
{
msg_Err( p_demux ,"Unable to setup capture" );
}
Close( p_this );
return VLC_EGENERIC;
}
/* TODO - UYV444 chroma converter is missing, when it will be available
* fourcc will become variable (and not just a fixed value for UYVY)
*/
es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
fmt.video.i_width = p_sys->width;
fmt.video.i_height = p_sys->height;
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_video = es_out_Add( p_demux->out, &fmt );
/* have the camera start sending us data */
if( dc1394_video_set_transmission( p_sys->camera,
DC1394_ON ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to start camera iso transmission" );
dc1394_capture_stop( p_sys->camera );
Close( p_this );
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "Set iso transmission" );
// TODO: reread camera
return VLC_SUCCESS;
}
/*****************************************************************************
* Close:
*****************************************************************************/
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;
/* Stop data transmission */
if( dc1394_video_set_transmission( p_sys->camera,
DC1394_OFF ) != DC1394_SUCCESS )
msg_Err( p_demux, "Unable to stop camera iso transmission" );
/* Close camera */
dc1394_capture_stop( p_sys->camera );
dc1394_camera_free(p_sys->camera);
dc1394_free(p_sys->p_dccontext);
free( p_sys->video_device );
}
#if 0
static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
{
char u,v,y;
u_char *sc;
u_char *dc;
sc = (u_char *)src + (spos*2);
if( spos % 2 )
{
v = sc[0];
y = sc[1];
u = *(sc -2);
}
else
{
u = sc[0];
y = sc[1];
v = sc[2];
}
dc = (u_char *)dst+(dpos*2);
if( dpos % 2 )
{
dc[0] = v;
dc[1] = y;
}
else
{
dc[0] = u;
dc[1] = y;
}
}
#endif
/*****************************************************************************
* Demux:
*****************************************************************************/
static block_t *GrabVideo( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block = NULL;
if( dc1394_capture_dequeue( p_sys->camera,
DC1394_CAPTURE_POLICY_WAIT,
&p_sys->frame ) != DC1394_SUCCESS )
{
msg_Err( p_demux, "Unable to capture a frame" );
return NULL;
}
p_block = block_Alloc( p_sys->frame->size[0] * p_sys->frame->size[1] * 2 );
if( !p_block )
{
msg_Err( p_demux, "Can not get block" );
return NULL;
}
if( !p_sys->frame->image )
{
msg_Err (p_demux, "Capture buffer empty");
block_Release( p_block );
return NULL;
}
memcpy( p_block->p_buffer, (const char *)p_sys->frame->image,
p_sys->width * p_sys->height * 2 );
p_block->i_pts = p_block->i_dts = vlc_tick_now();
dc1394_capture_enqueue( p_sys->camera, p_sys->frame );
return p_block;
}
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_blockv = NULL;
/* Try grabbing video frame */
p_blockv = GrabVideo( p_demux );
if( !p_blockv )
{
/* Sleep so we do not consume all the cpu, 10ms seems
* like a good value (100fps)
*/
vlc_tick_sleep( VLC_HARD_MIN_SLEEP );
return 1;
}
if( p_blockv )
{
es_out_SetPCR( p_demux->out, p_blockv->i_pts );
es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
}
return 1;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
VLC_UNUSED( p_demux );
switch( i_query )
{
/* Special for access_demux */
case DEMUX_CAN_PAUSE:
case DEMUX_CAN_SEEK:
case DEMUX_CAN_CONTROL_PACE:
*va_arg( args, bool * ) = false;
return VLC_SUCCESS;
case DEMUX_GET_PTS_DELAY:
*va_arg( args, vlc_tick_t * ) = DEFAULT_PTS_DELAY;
return VLC_SUCCESS;
case DEMUX_GET_TIME:
*va_arg( args, vlc_tick_t * ) = vlc_tick_now();
return VLC_SUCCESS;
/* TODO implement others */
default:
return VLC_EGENERIC;
}
return VLC_EGENERIC;
}
static int process_options( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
char *psz_dup;
char *psz_parser;
char *token = NULL;
char *state = NULL;
const char *in_size = NULL;
const char *in_fmt = NULL;
float rate_f;
psz_dup = strdup( p_demux->psz_location );
psz_parser = psz_dup;
for( token = strtok_r( psz_parser,":",&state); token;
token = strtok_r( NULL, ":", &state ) )
{
if( strncmp( token, "size=", strlen("size=") ) == 0 )
{
token += strlen("size=");
if( strncmp( token, "160x120", 7 ) == 0 )
{
/* TODO - UYV444 chroma converter is needed ...
* video size of 160x120 is temporarily disabled
*/
msg_Err( p_demux,
"video size of 160x120 is actually disabled for lack of"
"chroma support. It will be released ASAP, until then try "
"an higher size (320x240 and 640x480 are fully supported)" );
free(psz_dup);
return VLC_EGENERIC;
#if 0
in_size = "160x120";
p_sys->width = 160;
p_sys->height = 120;
#endif
}
else if( strncmp( token, "320x240", 7 ) == 0 )
{
in_size = "320x240";
p_sys->width = 320;
p_sys->height = 240;
}
else if( strncmp( token, "640x480", 7 ) == 0 )
{
in_size = "640x480";
p_sys->width = 640;
p_sys->height = 480;
}
else
{
msg_Err( p_demux,
"This program currently suppots frame sizes of"
" 160x120, 320x240, and 640x480. "
"Please specify one of them. You have specified %s.",
token );
free(psz_dup);
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "Requested video size : %s",token );
}
if( strncmp( token, "format=", strlen("format=") ) == 0 )
{
token += strlen("format=");
if( strncmp( token, "YUV411", 6 ) == 0 )
{
in_fmt = "YUV411";
}
else if( strncmp( token, "YUV422", 6 ) == 0 )
{
in_fmt = "YUV422";
}
else if( strncmp( token, "YUV444", 6 ) == 0 )
{
in_fmt = "YUV444";
}
else if( strncmp( token, "RGB8", 4 ) == 0 )
{
in_fmt = "RGB8";
}
else if( strncmp( token, "MONO8", 5 ) == 0 )
{
in_fmt = "MONO8";
}
else if( strncmp( token, "MONO16", 6 ) == 0 )
{
in_fmt = "MONO16";
}
else
{
msg_Err( p_demux, "Invalid format %s.", token );
free(psz_dup);
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "Requested video format : %s", token );
}
else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
{
token += strlen("fps=");
sscanf( token, "%g", &rate_f );
if( rate_f == 1.875 )
p_sys->frame_rate = DC1394_FRAMERATE_1_875;
else if( rate_f == 3.75 )
p_sys->frame_rate = DC1394_FRAMERATE_3_75;
else if( rate_f == 7.5 )
p_sys->frame_rate = DC1394_FRAMERATE_7_5;
else if( rate_f == 15 )
p_sys->frame_rate = DC1394_FRAMERATE_15;
else if( rate_f == 30 )
p_sys->frame_rate = DC1394_FRAMERATE_30;
else if( rate_f == 60 )
p_sys->frame_rate = DC1394_FRAMERATE_60;
else
{
msg_Err( p_demux ,
"This program supports framerates of"
" 1.875, 3.75, 7.5, 15, 30, 60. "
"Please specify one of them. You have specified %s.",
token);
free(psz_dup);
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "Requested frame rate : %s",token );
}
else if( strncmp( token, "resetbus", strlen( "resetbus" ) ) == 0 )
{
token += strlen("resetbus");
p_sys->reset_bus = 1;
}
else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
{
int nr = 0;
token += strlen("brightness=");
nr = sscanf( token, "%u", &p_sys->brightness);
if( nr != 1 )
{
msg_Err( p_demux, "Bad brightness value '%s', "
"must be an unsigned integer.",
token );
free(psz_dup);
return VLC_EGENERIC;
}
}
else if( strncmp( token, "buffers=", strlen( "buffers=" ) ) == 0 )
{
int nr = 0;
int in_buf = 0;
token += strlen("buffers=");
nr = sscanf( token, "%d", &in_buf);
if( nr != 1 || in_buf < 1 )
{
msg_Err( p_demux, "DMA buffers must be 1 or greater." );
free(psz_dup);
return VLC_EGENERIC;
}
else p_sys->dma_buffers = in_buf;
}
#if 0
// NOTE: If controller support is added back, more logic will needed to be added
// after the cameras are scanned.
else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
{
int nr = 0;
token += strlen("controller=");
nr = sscanf( token, "%u", &p_sys->controller );
if( nr != 1)
{
msg_Err(p_demux, "Bad controller value '%s', "
"must be an unsigned integer.",
token );
return VLC_EGENERIC;
}
}
#endif
else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
{
int nr = 0;
token += strlen("camera=");
nr = sscanf(token,"%u",&p_sys->selected_camera);
if( nr != 1)
{
msg_Err( p_demux, "Bad camera number '%s', "
"must be an unsigned integer.",
token );
free(psz_dup);
return VLC_EGENERIC;
}
}
else if( strncmp( token, "vdev=", strlen( "vdev=" ) ) == 0)
{
token += strlen("vdev=");
p_sys->video_device = strdup(token);
msg_Dbg( p_demux, "Using video device '%s'.", token );
}
else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
{
int nr = 0;
token += strlen("focus=");
nr = sscanf( token, "%u", &p_sys->focus );
if( nr != 1 )
{
msg_Err( p_demux, "Bad focus value '%s', "
"must be an unsigned integer.",
token );
free(psz_dup);
return VLC_EGENERIC;
}
}
else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
{
token += strlen("uid=");
sscanf( token, "0x%"SCNx64, &p_sys->selected_uid );
}
}
// The mode is a combination of size and format and not every format
// is supported by every size.
if( in_size)
{
if( strcmp( in_size, "160x120") == 0)
{
if( in_fmt && (strcmp( in_fmt, "YUV444") != 0) )
msg_Err(p_demux, "160x120 only supports YUV444 - forcing");
p_sys->video_mode = DC1394_VIDEO_MODE_160x120_YUV444;
}
else if( strcmp( in_size, "320x240") == 0)
{
if( in_fmt && (strcmp( in_fmt, "YUV422") != 0) )
msg_Err(p_demux, "320x240 only supports YUV422 - forcing");
p_sys->video_mode = DC1394_VIDEO_MODE_320x240_YUV422;
}
}
else
{ // 640x480 default
if( in_fmt )
{
if( strcmp( in_fmt, "RGB8") == 0)
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_RGB8;
else if( strcmp( in_fmt, "MONO8") == 0)
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO8;
else if( strcmp( in_fmt, "MONO16") == 0)
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO16;
else if( strcmp( in_fmt, "YUV411") == 0)
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV411;
else // YUV422 default
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
}
else // YUV422 default
p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
}
free( psz_dup );
return VLC_SUCCESS;
}
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