Commit 4638fd98 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
Browse files

dvdnav: condition variable for still image handling

This kills 100 wakeups per seconds.
parent 9ad99688
/*****************************************************************************
* dvdnav.c: DVD module using the dvdnav library.
*****************************************************************************
* Copyright (C) 2004 the VideoLAN team
* Copyright (C) 2004-2009 the VideoLAN team
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
......@@ -108,20 +108,6 @@ vlc_module_end ()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
typedef struct
{
VLC_COMMON_MEMBERS
demux_t *p_demux;
vlc_mutex_t lock;
bool b_still;
int64_t i_still_end;
} event_thread_t;
static void* EventThread( vlc_object_t * );
struct demux_sys_t
{
dvdnav_t *dvdnav;
......@@ -129,6 +115,16 @@ struct demux_sys_t
/* */
bool b_reset_pcr;
struct
{
bool b_created;
bool b_enabled;
mtime_t i_end;
vlc_mutex_t lock;
vlc_cond_t wait;
vlc_thread_t thread;
} still;
/* track */
ps_track_t tk[PS_TK_COUNT];
int i_mux_rate;
......@@ -138,7 +134,6 @@ struct demux_sys_t
/* event */
vlc_object_t *p_vout;
event_thread_t *p_ev;
/* palette for menus */
uint32_t clut[16];
......@@ -170,6 +165,8 @@ static char *DemuxGetLanguageCode( demux_t *p_demux, const char *psz_var );
static int ControlInternal( demux_t *, int, ... );
static void* StillThread( void * );
static int EventKey( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
static int EventMouse( vlc_object_t *, char const *,
......@@ -354,20 +351,13 @@ static int Open( vlc_object_t *p_this )
var_Create( p_sys->p_input, "highlight", VLC_VAR_BOOL );
var_Create( p_sys->p_input, "highlight-mutex", VLC_VAR_MUTEX );
/* Now create our event thread catcher */
p_sys->p_ev = vlc_object_create( p_demux, sizeof( event_thread_t ) );
p_sys->p_ev->p_demux = p_demux;
vlc_mutex_init( &p_sys->p_ev->lock );
p_sys->p_ev->b_still = false;
/* catch all key event */
var_AddCallback( p_demux->p_libvlc, "key-action", EventKey, p_demux );
/* catch vout creation event */
var_AddCallback( p_sys->p_input, "intf-event", EventIntf, p_demux );
vlc_thread_create( p_sys->p_ev, "dvdnav event thread handler", EventThread,
VLC_THREAD_PRIORITY_LOW );
p_sys->still.b_enabled = false;
vlc_mutex_init( &p_sys->still.lock );
return VLC_SUCCESS;
}
......@@ -380,6 +370,7 @@ static void Close( vlc_object_t *p_this )
demux_sys_t *p_sys = p_demux->p_sys;
int i;
/* Stop vout event handler */
var_DelCallback( p_sys->p_input, "intf-event", EventIntf, p_demux );
if( p_sys->p_vout != NULL )
{ /* Should not happen, but better be safe than sorry. */
......@@ -388,12 +379,17 @@ static void Close( vlc_object_t *p_this )
var_DelCallback( p_sys->p_vout, "mouse-clicked", EventMouse, p_demux );
}
/* stop the event handler */
vlc_object_kill( p_sys->p_ev );
/* Stop key event handler (FIXME: should really be per-vout too) */
var_DelCallback( p_demux->p_libvlc, "key-action", EventKey, p_demux );
vlc_thread_join( p_sys->p_ev );
vlc_mutex_destroy( &p_sys->p_ev->lock );
vlc_object_release( p_sys->p_ev );
/* Stop still image handler */
if( p_sys->still.b_created )
{
vlc_cancel( p_sys->still.thread );
vlc_join( p_sys->still.thread, NULL );
vlc_cond_destroy( &p_sys->still.wait );
}
vlc_mutex_destroy( &p_sys->still.lock );
var_Destroy( p_sys->p_input, "highlight-mutex" );
var_Destroy( p_sys->p_input, "highlight" );
......@@ -644,7 +640,9 @@ static int Demux( demux_t *p_demux )
switch( i_event )
{
case DVDNAV_BLOCK_OK: /* mpeg block */
p_sys->p_ev->b_still = false;
vlc_mutex_lock( &p_sys->still.lock );
p_sys->still.b_enabled = false;
vlc_mutex_unlock( &p_sys->still.lock );
if( p_sys->b_reset_pcr )
{
es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
......@@ -662,20 +660,31 @@ static int Demux( demux_t *p_demux )
dvdnav_still_event_t *event = (dvdnav_still_event_t*)packet;
bool b_still_init = false;
vlc_mutex_lock( &p_sys->p_ev->lock );
if( !p_sys->p_ev->b_still )
vlc_mutex_lock( &p_sys->still.lock );
if( !p_sys->still.b_enabled )
{
msg_Dbg( p_demux, "DVDNAV_STILL_FRAME" );
msg_Dbg( p_demux, " - length=0x%x", event->length );
p_sys->p_ev->b_still = true;
/* FIXME: use vlc_timer_create() if it is ever invented */
p_sys->still.b_enabled = true;
if( !p_sys->still.b_created )
{
vlc_cond_init( &p_sys->still.wait );
p_sys->still.b_created =
!vlc_clone( &p_sys->still.thread, StillThread, p_sys,
VLC_THREAD_PRIORITY_LOW );
}
b_still_init = true;
if( event->length == 0xff )
p_sys->p_ev->i_still_end = 0;
p_sys->still.i_end = 0;
else
p_sys->p_ev->i_still_end = mdate() +
event->length * INT64_C(1000000);
p_sys->still.i_end = mdate() +
event->length * INT64_C(1000000);
vlc_cond_signal( &p_sys->still.wait );
}
vlc_mutex_unlock( &p_sys->p_ev->lock );
vlc_mutex_unlock( &p_sys->still.lock );
if( b_still_init )
{
......@@ -1303,35 +1312,31 @@ static void ESNew( demux_t *p_demux, int i_id )
/*****************************************************************************
* Event handler code
*****************************************************************************/
static void* EventThread( vlc_object_t *p_this )
static void* StillThread( void *p_data )
{
event_thread_t *p_ev = (event_thread_t*)p_this;
demux_sys_t *p_sys = p_ev->p_demux->p_sys;
int canc = vlc_savecancel ();
demux_sys_t *p_sys = p_data;
/* main loop */
while( vlc_object_alive( p_ev ) )
vlc_mutex_lock( &p_sys->still.lock );
mutex_cleanup_push( &p_sys->still.lock );
for( ;; )
{
vlc_mutex_lock( &p_ev->lock );
/* VOUT part */
/* Still part */
if( p_ev->b_still )
if( p_sys->still.b_enabled && p_sys->still.i_end )
{
if( p_ev->i_still_end > 0 && p_ev->i_still_end < mdate() )
{
p_ev->b_still = false;
if( vlc_cond_timedwait( &p_sys->still.wait, &p_sys->still.lock,
p_sys->still.i_end ) )
{ /* Still image time out */
int canc = vlc_savecancel();
p_sys->still.b_enabled = false;
dvdnav_still_skip( p_sys->dvdnav );
vlc_restorecancel( canc );
}
}
vlc_mutex_unlock( &p_ev->lock );
/* Wait a bit */
msleep( 10000 );
else
vlc_cond_wait( &p_sys->still.wait, &p_sys->still.lock );
}
vlc_restorecancel (canc);
vlc_cleanup_pop( );
return NULL;
assert( 0 );
}
static int EventMouse( vlc_object_t *p_vout, char const *psz_var,
......
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