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3512e4087e
vlc/lib/media_player.c
Hugo Beauzée-Luyssen f74f2334bb libvlc: Remove duplicated forward declaration
2014-10-24 17:11:47 +02:00

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/*****************************************************************************
* media_player.c: Libvlc API Media Instance management functions
*****************************************************************************
* Copyright (C) 2005-2011 VLC authors and VideoLAN
*
* Authors: Clément Stenac <zorglub@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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>
#include <vlc/libvlc.h>
#include <vlc/libvlc_media.h>
#include <vlc/libvlc_events.h>
#include <vlc_demux.h>
#include <vlc_input.h>
#include <vlc_vout.h>
#include <vlc_aout.h>
#include <vlc_keys.h>
#include "libvlc_internal.h"
#include "media_internal.h" // libvlc_media_set_state()
#include "media_player_internal.h"
static int
input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata );
static int
input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata );
static int
input_scrambled_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata );
static int
input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata );
static int
input_es_changed( vlc_object_t * p_this, char const * psz_cmd,
int action, vlc_value_t *p_val,
void *p_userdata);
static int
input_es_selected( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata );
static void
add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi );
static void
del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi );
static int
snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data );
static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
/*
* Shortcuts
*/
#define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
{
libvlc_event_manager_register_event_type(mp->p_event_manager, type);
}
/*
* The input lock protects the input and input resource pointer.
* It MUST NOT be used from callbacks.
*
* The object lock protects the reset, namely the media and the player state.
* It can, and usually needs to be taken from callbacks.
* The object lock can be acquired under the input lock... and consequently
* the opposite order is STRICTLY PROHIBITED.
*/
static inline void lock(libvlc_media_player_t *mp)
{
vlc_mutex_lock(&mp->object_lock);
}
static inline void unlock(libvlc_media_player_t *mp)
{
vlc_mutex_unlock(&mp->object_lock);
}
static inline void lock_input(libvlc_media_player_t *mp)
{
vlc_mutex_lock(&mp->input.lock);
}
static inline void unlock_input(libvlc_media_player_t *mp)
{
vlc_mutex_unlock(&mp->input.lock);
}
/*
* Release the associated input thread.
*
* Object lock is NOT held.
* Input lock is held or instance is being destroyed.
*/
static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
{
assert( p_mi );
input_thread_t *p_input_thread = p_mi->input.p_thread;
if( !p_input_thread )
return;
p_mi->input.p_thread = NULL;
var_DelCallback( p_input_thread, "can-seek",
input_seekable_changed, p_mi );
var_DelCallback( p_input_thread, "can-pause",
input_pausable_changed, p_mi );
var_DelCallback( p_input_thread, "program-scrambled",
input_scrambled_changed, p_mi );
var_DelCallback( p_input_thread, "intf-event",
input_event_changed, p_mi );
del_es_callbacks( p_input_thread, p_mi );
/* We owned this one */
input_Stop( p_input_thread, b_input_abort );
input_Close( p_input_thread );
}
/*
* Retrieve the input thread. Be sure to release the object
* once you are done with it. (libvlc Internal)
*/
input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
assert( p_mi );
lock_input(p_mi);
p_input_thread = p_mi->input.p_thread;
if( p_input_thread )
vlc_object_hold( p_input_thread );
else
libvlc_printerr( "No active input" );
unlock_input(p_mi);
return p_input_thread;
}
/*
* Set the internal state of the media_player. (media player Internal)
*
* Function will lock the media_player.
*/
static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
bool b_locked )
{
if(!b_locked)
lock(p_mi);
p_mi->state = state;
libvlc_media_t *media = p_mi->p_md;
if (media)
libvlc_media_retain(media);
if(!b_locked)
unlock(p_mi);
if (media)
{
// Also set the state of the corresponding media
// This is strictly for convenience.
libvlc_media_set_state(media, state);
libvlc_media_release(media);
}
}
static int
input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata )
{
VLC_UNUSED(oldval);
VLC_UNUSED(p_this);
VLC_UNUSED(psz_cmd);
libvlc_media_player_t * p_mi = p_userdata;
libvlc_event_t event;
event.type = libvlc_MediaPlayerSeekableChanged;
event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
libvlc_event_send( p_mi->p_event_manager, &event );
return VLC_SUCCESS;
}
static int
input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata )
{
VLC_UNUSED(oldval);
VLC_UNUSED(p_this);
VLC_UNUSED(psz_cmd);
libvlc_media_player_t * p_mi = p_userdata;
libvlc_event_t event;
event.type = libvlc_MediaPlayerPausableChanged;
event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
libvlc_event_send( p_mi->p_event_manager, &event );
return VLC_SUCCESS;
}
static int
input_scrambled_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata )
{
VLC_UNUSED(oldval);
VLC_UNUSED(p_this);
VLC_UNUSED(psz_cmd);
libvlc_media_player_t * p_mi = p_userdata;
libvlc_event_t event;
event.type = libvlc_MediaPlayerScrambledChanged;
event.u.media_player_scrambled_changed.new_scrambled = newval.b_bool;
libvlc_event_send( p_mi->p_event_manager, &event );
return VLC_SUCCESS;
}
static int
input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata )
{
VLC_UNUSED(oldval);
input_thread_t * p_input = (input_thread_t *)p_this;
libvlc_media_player_t * p_mi = p_userdata;
libvlc_event_t event;
assert( !strcmp( psz_cmd, "intf-event" ) );
if( newval.i_int == INPUT_EVENT_STATE )
{
libvlc_state_t libvlc_state;
switch ( var_GetInteger( p_input, "state" ) )
{
case INIT_S:
libvlc_state = libvlc_NothingSpecial;
event.type = libvlc_MediaPlayerNothingSpecial;
break;
case OPENING_S:
libvlc_state = libvlc_Opening;
event.type = libvlc_MediaPlayerOpening;
break;
case PLAYING_S:
libvlc_state = libvlc_Playing;
event.type = libvlc_MediaPlayerPlaying;
break;
case PAUSE_S:
libvlc_state = libvlc_Paused;
event.type = libvlc_MediaPlayerPaused;
break;
case END_S:
libvlc_state = libvlc_Ended;
event.type = libvlc_MediaPlayerEndReached;
break;
case ERROR_S:
libvlc_state = libvlc_Error;
event.type = libvlc_MediaPlayerEncounteredError;
break;
default:
return VLC_SUCCESS;
}
set_state( p_mi, libvlc_state, false );
libvlc_event_send( p_mi->p_event_manager, &event );
}
else if( newval.i_int == INPUT_EVENT_ABORT )
{
libvlc_state_t libvlc_state = libvlc_Stopped;
event.type = libvlc_MediaPlayerStopped;
set_state( p_mi, libvlc_state, false );
libvlc_event_send( p_mi->p_event_manager, &event );
}
else if( newval.i_int == INPUT_EVENT_POSITION )
{
if( var_GetInteger( p_input, "state" ) != PLAYING_S )
return VLC_SUCCESS; /* Don't send the position while stopped */
/* */
event.type = libvlc_MediaPlayerPositionChanged;
event.u.media_player_position_changed.new_position =
var_GetFloat( p_input, "position" );
libvlc_event_send( p_mi->p_event_manager, &event );
/* */
event.type = libvlc_MediaPlayerTimeChanged;
event.u.media_player_time_changed.new_time =
from_mtime(var_GetTime( p_input, "time" ));
libvlc_event_send( p_mi->p_event_manager, &event );
}
else if( newval.i_int == INPUT_EVENT_LENGTH )
{
event.type = libvlc_MediaPlayerLengthChanged;
event.u.media_player_length_changed.new_length =
from_mtime(var_GetTime( p_input, "length" ));
libvlc_event_send( p_mi->p_event_manager, &event );
}
else if( newval.i_int == INPUT_EVENT_CACHE )
{
event.type = libvlc_MediaPlayerBuffering;
event.u.media_player_buffering.new_cache = (int)(100 *
var_GetFloat( p_input, "cache" ));
libvlc_event_send( p_mi->p_event_manager, &event );
}
else if( newval.i_int == INPUT_EVENT_VOUT )
{
vout_thread_t **pp_vout;
size_t i_vout;
if( input_Control( p_input, INPUT_GET_VOUTS, &pp_vout, &i_vout ) )
{
i_vout = 0;
}
else
{
for( size_t i = 0; i < i_vout; i++ )
vlc_object_release( pp_vout[i] );
free( pp_vout );
}
event.type = libvlc_MediaPlayerVout;
event.u.media_player_vout.new_count = i_vout;
libvlc_event_send( p_mi->p_event_manager, &event );
}
return VLC_SUCCESS;
}
static int track_type_from_name(const char *psz_name)
{
if( !strcmp( psz_name, "video-es" ) )
return libvlc_track_video;
else if( !strcmp( psz_name, "audio-es" ) )
return libvlc_track_audio;
else if( !strcmp( psz_name, "spu-es" ) )
return libvlc_track_text;
else
return libvlc_track_unknown;
}
static int input_es_changed( vlc_object_t *p_this,
char const *psz_cmd,
int action,
vlc_value_t *p_val,
void *p_userdata )
{
VLC_UNUSED(p_this);
libvlc_media_player_t *mp = p_userdata;
libvlc_event_t event;
/* Ignore the "Disable" element */
if (p_val && p_val->i_int < 0)
return VLC_EGENERIC;
switch (action)
{
case VLC_VAR_ADDCHOICE:
event.type = libvlc_MediaPlayerESAdded;
break;
case VLC_VAR_DELCHOICE:
case VLC_VAR_CLEARCHOICES:
event.type = libvlc_MediaPlayerESDeleted;
break;
default:
return VLC_EGENERIC;
}
event.u.media_player_es_changed.i_type = track_type_from_name(psz_cmd);
int i_id;
if (action != VLC_VAR_CLEARCHOICES)
{
if (!p_val)
return VLC_EGENERIC;
i_id = p_val->i_int;
}
else
{
/* -1 means all ES tracks of this type were deleted. */
i_id = -1;
}
event.u.media_player_es_changed.i_id = i_id;
libvlc_event_send(mp->p_event_manager, &event);
return VLC_SUCCESS;
}
static int
input_es_selected( vlc_object_t * p_this, char const * psz_cmd,
vlc_value_t oldval, vlc_value_t newval,
void * p_userdata )
{
VLC_UNUSED(p_this);
VLC_UNUSED(oldval);
libvlc_media_player_t *mp = p_userdata;
libvlc_event_t event;
event.type = libvlc_MediaPlayerESSelected;
event.u.media_player_es_changed.i_type = track_type_from_name(psz_cmd);
event.u.media_player_es_changed.i_id = newval.i_int;
libvlc_event_send(mp->p_event_manager, &event);
return VLC_SUCCESS;
}
/**************************************************************************
* Snapshot Taken Event.
*
* FIXME: This snapshot API interface makes no sense in media_player.
*************************************************************************/
static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
libvlc_media_player_t *mp = p_data;
libvlc_event_t event;
event.type = libvlc_MediaPlayerSnapshotTaken;
event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
libvlc_event_send(mp->p_event_manager, &event);
return VLC_SUCCESS;
}
/**************************************************************************
* Create a Media Instance object.
*
* Refcount strategy:
* - All items created by _new start with a refcount set to 1.
* - Accessor _release decrease the refcount by 1, if after that
* operation the refcount is 0, the object is destroyed.
* - Accessor _retain increase the refcount by 1 (XXX: to implement)
*
* Object locking strategy:
* - No lock held while in constructor.
* - When accessing any member variable this lock is held. (XXX who locks?)
* - When attempting to destroy the object the lock is also held.
**************************************************************************/
libvlc_media_player_t *
libvlc_media_player_new( libvlc_instance_t *instance )
{
libvlc_media_player_t * mp;
assert(instance);
mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
if (unlikely(mp == NULL))
{
libvlc_printerr("Not enough memory");
return NULL;
}
/* Input */
var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
/* Video */
var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
var_Create (mp, "window", VLC_VAR_STRING);
var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
var_Create (mp, "vmem-setup", VLC_VAR_ADDRESS);
var_Create (mp, "vmem-cleanup", VLC_VAR_ADDRESS);
var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "avcodec-hw", VLC_VAR_STRING);
var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
#if defined (_WIN32) || defined (__OS2__)
var_Create (mp, "drawable-hwnd", VLC_VAR_INTEGER);
#endif
#ifdef __APPLE__
var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
#endif
var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
var_SetBool (mp, "keyboard-events", true);
var_Create (mp, "mouse-events", VLC_VAR_BOOL);
var_SetBool (mp, "mouse-events", true);
var_Create (mp, "fullscreen", VLC_VAR_BOOL);
var_Create (mp, "autoscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
var_Create (mp, "zoom", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
var_Create (mp, "crop", VLC_VAR_STRING);
var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
var_Create (mp, "marq-marquee", VLC_VAR_STRING);
var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "logo-file", VLC_VAR_STRING);
var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
var_Create (mp, "hue", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
/* Audio */
var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
var_Create (mp, "mute", VLC_VAR_BOOL);
var_Create (mp, "volume", VLC_VAR_FLOAT);
var_Create (mp, "corks", VLC_VAR_INTEGER);
var_Create (mp, "audio-filter", VLC_VAR_STRING);
var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
var_Create (mp, "amem-cleanup", VLC_VAR_ADDRESS);
var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
/* Video Title */
var_Create (mp, "video-title-show", VLC_VAR_BOOL);
var_Create (mp, "video-title-position", VLC_VAR_INTEGER);
var_Create (mp, "video-title-timeout", VLC_VAR_INTEGER);
/* Equalizer */
var_Create (mp, "equalizer-preamp", VLC_VAR_FLOAT);
var_Create (mp, "equalizer-vlcfreqs", VLC_VAR_BOOL);
var_Create (mp, "equalizer-bands", VLC_VAR_STRING);
mp->p_md = NULL;
mp->state = libvlc_NothingSpecial;
mp->p_libvlc_instance = instance;
mp->input.p_thread = NULL;
mp->input.p_resource = input_resource_New(VLC_OBJECT(mp));
if (unlikely(mp->input.p_resource == NULL))
{
vlc_object_release(mp);
return NULL;
}
audio_output_t *aout = input_resource_GetAout(mp->input.p_resource);
if( aout != NULL )
input_resource_PutAout(mp->input.p_resource, aout);
vlc_mutex_init (&mp->input.lock);
mp->i_refcount = 1;
mp->p_event_manager = libvlc_event_manager_new(mp, instance);
if (unlikely(mp->p_event_manager == NULL))
{
input_resource_Release(mp->input.p_resource);
vlc_object_release(mp);
return NULL;
}
vlc_mutex_init(&mp->object_lock);
register_event(mp, NothingSpecial);
register_event(mp, Opening);
register_event(mp, Buffering);
register_event(mp, Playing);
register_event(mp, Paused);
register_event(mp, Stopped);
register_event(mp, Forward);
register_event(mp, Backward);
register_event(mp, EndReached);
register_event(mp, EncounteredError);
register_event(mp, SeekableChanged);
register_event(mp, PositionChanged);
register_event(mp, TimeChanged);
register_event(mp, LengthChanged);
register_event(mp, TitleChanged);
register_event(mp, PausableChanged);
register_event(mp, Vout);
register_event(mp, ScrambledChanged);
register_event(mp, ESAdded);
register_event(mp, ESDeleted);
register_event(mp, ESSelected);
/* Snapshot initialization */
register_event(mp, SnapshotTaken);
register_event(mp, MediaChanged);
/* Attach a var callback to the global object to provide the glue between
* vout_thread that generates the event and media_player that re-emits it
* with its own event manager
*
* FIXME: It's unclear why we want to put this in public API, and why we
* want to expose it in such a limiting and ugly way.
*/
var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
libvlc_retain(instance);
return mp;
}
/**************************************************************************
* Create a Media Instance object with a media descriptor.
**************************************************************************/
libvlc_media_player_t *
libvlc_media_player_new_from_media( libvlc_media_t * p_md )
{
libvlc_media_player_t * p_mi;
p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
if( !p_mi )
return NULL;
libvlc_media_retain( p_md );
p_mi->p_md = p_md;
return p_mi;
}
/**************************************************************************
* Destroy a Media Instance object (libvlc internal)
*
* Warning: No lock held here, but hey, this is internal. Caller must lock.
**************************************************************************/
static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
{
assert( p_mi );
/* Detach Callback from the main libvlc object */
var_DelCallback( p_mi->p_libvlc,
"snapshot-file", snapshot_was_taken, p_mi );
/* No need for lock_input() because no other threads knows us anymore */
if( p_mi->input.p_thread )
release_input_thread(p_mi, true);
input_resource_Terminate( p_mi->input.p_resource );
input_resource_Release( p_mi->input.p_resource );
vlc_mutex_destroy( &p_mi->input.lock );
libvlc_event_manager_release( p_mi->p_event_manager );
libvlc_media_release( p_mi->p_md );
vlc_mutex_destroy( &p_mi->object_lock );
libvlc_instance_t *instance = p_mi->p_libvlc_instance;
vlc_object_release( p_mi );
libvlc_release(instance);
}
/**************************************************************************
* Release a Media Instance object.
*
* Function does the locking.
**************************************************************************/
void libvlc_media_player_release( libvlc_media_player_t *p_mi )
{
bool destroy;
assert( p_mi );
lock(p_mi);
destroy = !--p_mi->i_refcount;
unlock(p_mi);
if( destroy )
libvlc_media_player_destroy( p_mi );
}
/**************************************************************************
* Retain a Media Instance object.
*
* Caller must hold the lock.
**************************************************************************/
void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
{
assert( p_mi );
lock(p_mi);
p_mi->i_refcount++;
unlock(p_mi);
}
/**************************************************************************
* Set the Media descriptor associated with the instance.
*
* Enter without lock -- function will lock the object.
**************************************************************************/
void libvlc_media_player_set_media(
libvlc_media_player_t *p_mi,
libvlc_media_t *p_md )
{
lock_input(p_mi);
/* FIXME I am not sure if it is a user request or on die(eof/error)
* request here */
release_input_thread( p_mi,
p_mi->input.p_thread &&
!p_mi->input.p_thread->b_eof &&
!p_mi->input.p_thread->b_error );
lock( p_mi );
set_state( p_mi, libvlc_NothingSpecial, true );
unlock_input( p_mi );
libvlc_media_release( p_mi->p_md );
if( !p_md )
{
p_mi->p_md = NULL;
unlock(p_mi);
return; /* It is ok to pass a NULL md */
}
libvlc_media_retain( p_md );
p_mi->p_md = p_md;
/* The policy here is to ignore that we were created using a different
* libvlc_instance, because we don't really care */
p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
unlock(p_mi);
/* Send an event for the newly available media */
libvlc_event_t event;
event.type = libvlc_MediaPlayerMediaChanged;
event.u.media_player_media_changed.new_media = p_md;
libvlc_event_send( p_mi->p_event_manager, &event );
}
/**************************************************************************
* Get the Media descriptor associated with the instance.
**************************************************************************/
libvlc_media_t *
libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
{
libvlc_media_t *p_m;
lock( p_mi );
p_m = p_mi->p_md;
if( p_m )
libvlc_media_retain( p_m );
unlock( p_mi );
return p_m;
}
/**************************************************************************
* Get the event Manager.
**************************************************************************/
libvlc_event_manager_t *
libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
{
return p_mi->p_event_manager;
}
static void add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
{
var_AddListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
var_AddListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
var_AddListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
var_AddCallback( p_input_thread, "video-es", input_es_selected, p_mi );
var_AddCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
var_AddCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
}
static void del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
{
var_DelListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
var_DelListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
var_DelListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
var_DelCallback( p_input_thread, "video-es", input_es_selected, p_mi );
var_DelCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
var_DelCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
}
/**************************************************************************
* Tell media player to start playing.
**************************************************************************/
int libvlc_media_player_play( libvlc_media_player_t *p_mi )
{
lock_input( p_mi );
input_thread_t *p_input_thread = p_mi->input.p_thread;
if( p_input_thread )
{
/* A thread already exists, send it a play message */
input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
unlock_input( p_mi );
return 0;
}
/* Ignore previous exception */
lock(p_mi);
if( !p_mi->p_md )
{
unlock(p_mi);
unlock_input( p_mi );
libvlc_printerr( "No associated media descriptor" );
return -1;
}
p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
p_mi->input.p_resource );
unlock(p_mi);
if( !p_input_thread )
{
unlock_input(p_mi);
libvlc_printerr( "Not enough memory" );
return -1;
}
var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
var_AddCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
add_es_callbacks( p_input_thread, p_mi );
if( input_Start( p_input_thread ) )
{
unlock_input(p_mi);
del_es_callbacks( p_input_thread, p_mi );
var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
var_DelCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
vlc_object_release( p_input_thread );
libvlc_printerr( "Input initialization failure" );
return -1;
}
p_mi->input.p_thread = p_input_thread;
unlock_input(p_mi);
return 0;
}
void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
{
input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
if( !p_input_thread )
return;
libvlc_state_t state = libvlc_media_player_get_state( p_mi );
if( state == libvlc_Playing || state == libvlc_Buffering )
{
if( paused )
{
if( libvlc_media_player_can_pause( p_mi ) )
input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
else
input_Stop( p_input_thread, true );
}
}
else
{
if( !paused )
input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
}
vlc_object_release( p_input_thread );
}
/**************************************************************************
* Toggle pause.
**************************************************************************/
void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
{
libvlc_state_t state = libvlc_media_player_get_state( p_mi );
bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
libvlc_media_player_set_pause( p_mi, playing );
}
/**************************************************************************
* Tells whether the media player is currently playing.
*
* Enter with lock held.
**************************************************************************/
int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
{
libvlc_state_t state = libvlc_media_player_get_state( p_mi );
return (libvlc_Playing == state) || (libvlc_Buffering == state);
}
/**************************************************************************
* Stop playing.
**************************************************************************/
void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
{
libvlc_state_t state = libvlc_media_player_get_state( p_mi );
lock_input(p_mi);
release_input_thread( p_mi, true ); /* This will stop the input thread */
/* Force to go to stopped state, in case we were in Ended, or Error
* state. */
if( state != libvlc_Stopped )
{
set_state( p_mi, libvlc_Stopped, false );
/* Construct and send the event */
libvlc_event_t event;
event.type = libvlc_MediaPlayerStopped;
libvlc_event_send( p_mi->p_event_manager, &event );
}
input_resource_Terminate( p_mi->input.p_resource );
unlock_input(p_mi);
}
void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
void *(*lock_cb) (void *, void **),
void (*unlock_cb) (void *, void *, void *const *),
void (*display_cb) (void *, void *),
void *opaque )
{
var_SetAddress( mp, "vmem-lock", lock_cb );
var_SetAddress( mp, "vmem-unlock", unlock_cb );
var_SetAddress( mp, "vmem-display", display_cb );
var_SetAddress( mp, "vmem-data", opaque );
var_SetString( mp, "vout", "vmem" );
var_SetString( mp, "avcodec-hw", "none" );
}
void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
libvlc_video_format_cb setup,
libvlc_video_cleanup_cb cleanup )
{
var_SetAddress( mp, "vmem-setup", setup );
var_SetAddress( mp, "vmem-cleanup", cleanup );
}
void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
unsigned width, unsigned height, unsigned pitch )
{
var_SetString( mp, "vmem-chroma", chroma );
var_SetInteger( mp, "vmem-width", width );
var_SetInteger( mp, "vmem-height", height );
var_SetInteger( mp, "vmem-pitch", pitch );
}
/**************************************************************************
* set_nsobject
**************************************************************************/
void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
void * drawable )
{
assert (p_mi != NULL);
#ifdef __APPLE__
var_SetAddress (p_mi, "drawable-nsobject", drawable);
#else
(void) p_mi; (void)drawable;
#endif
}
/**************************************************************************
* get_nsobject
**************************************************************************/
void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
{
assert (p_mi != NULL);
#ifdef __APPLE__
return var_GetAddress (p_mi, "drawable-nsobject");
#else
return NULL;
#endif
}
/**************************************************************************
* set_agl
**************************************************************************/
void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
uint32_t drawable )
{
#ifdef __APPLE__
var_SetInteger (p_mi, "drawable-agl", drawable);
#else
(void) p_mi; (void)drawable;
#endif
}
/**************************************************************************
* get_agl
**************************************************************************/
uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
{
assert (p_mi != NULL);
#ifdef __APPLE__
return var_GetInteger (p_mi, "drawable-agl");
#else
return 0;
#endif
}
/**************************************************************************
* set_xwindow
**************************************************************************/
void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
uint32_t drawable )
{
assert (p_mi != NULL);
var_SetString (p_mi, "avcodec-hw", "");
var_SetString (p_mi, "vout", drawable ? "xid" : "any");
var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
var_SetInteger (p_mi, "drawable-xid", drawable);
}
/**************************************************************************
* get_xwindow
**************************************************************************/
uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
{
return var_GetInteger (p_mi, "drawable-xid");
}
/**************************************************************************
* set_hwnd
**************************************************************************/
void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
void *drawable )
{
assert (p_mi != NULL);
#if defined (_WIN32) || defined (__OS2__)
var_SetString (p_mi, "window",
(drawable != NULL) ? "embed-hwnd,any" : "");
var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
#else
(void) p_mi; (void) drawable;
#endif
}
/**************************************************************************
* get_hwnd
**************************************************************************/
void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
{
assert (p_mi != NULL);
#if defined (_WIN32) || defined (__OS2__)
return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
#else
return NULL;
#endif
}
void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
libvlc_audio_play_cb play_cb,
libvlc_audio_pause_cb pause_cb,
libvlc_audio_resume_cb resume_cb,
libvlc_audio_flush_cb flush_cb,
libvlc_audio_drain_cb drain_cb,
void *opaque )
{
var_SetAddress( mp, "amem-play", play_cb );
var_SetAddress( mp, "amem-pause", pause_cb );
var_SetAddress( mp, "amem-resume", resume_cb );
var_SetAddress( mp, "amem-flush", flush_cb );
var_SetAddress( mp, "amem-drain", drain_cb );
var_SetAddress( mp, "amem-data", opaque );
var_SetString( mp, "aout", "amem,none" );
input_resource_ResetAout(mp->input.p_resource);
}
void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
libvlc_audio_set_volume_cb cb )
{
var_SetAddress( mp, "amem-set-volume", cb );
input_resource_ResetAout(mp->input.p_resource);
}
void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
libvlc_audio_setup_cb setup,
libvlc_audio_cleanup_cb cleanup )
{
var_SetAddress( mp, "amem-setup", setup );
var_SetAddress( mp, "amem-cleanup", cleanup );
input_resource_ResetAout(mp->input.p_resource);
}
void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
unsigned rate, unsigned channels )
{
var_SetString( mp, "amem-format", format );
var_SetInteger( mp, "amem-rate", rate );
var_SetInteger( mp, "amem-channels", channels );
input_resource_ResetAout(mp->input.p_resource);
}
/**************************************************************************
* Getters for stream information
**************************************************************************/
libvlc_time_t libvlc_media_player_get_length(
libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
libvlc_time_t i_time;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
vlc_object_release( p_input_thread );
return i_time;
}
libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
libvlc_time_t i_time;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
vlc_object_release( p_input_thread );
return i_time;
}
void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
libvlc_time_t i_time )
{
input_thread_t *p_input_thread;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return;
var_SetTime( p_input_thread, "time", to_mtime(i_time) );
vlc_object_release( p_input_thread );
}
void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
float position )
{
input_thread_t *p_input_thread;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return;
var_SetFloat( p_input_thread, "position", position );
vlc_object_release( p_input_thread );
}
float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
float f_position;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1.0;
f_position = var_GetFloat( p_input_thread, "position" );
vlc_object_release( p_input_thread );
return f_position;
}
void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
int chapter )
{
input_thread_t *p_input_thread;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return;
var_SetInteger( p_input_thread, "chapter", chapter );
vlc_object_release( p_input_thread );
}
int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
int i_chapter;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
i_chapter = var_GetInteger( p_input_thread, "chapter" );
vlc_object_release( p_input_thread );
return i_chapter;
}
int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
vlc_value_t val;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
int i_ret = var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
vlc_object_release( p_input_thread );
return i_ret == VLC_SUCCESS ? val.i_int : -1;
}
int libvlc_media_player_get_chapter_count_for_title(
libvlc_media_player_t *p_mi,
int i_title )
{
input_thread_t *p_input_thread;
vlc_value_t val;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
char *psz_name;
if( asprintf( &psz_name, "title %2i", i_title ) == -1 )
{
vlc_object_release( p_input_thread );
return -1;
}
int i_ret = var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
vlc_object_release( p_input_thread );
free( psz_name );
return i_ret == VLC_SUCCESS ? val.i_int : -1;
}
void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
int i_title )
{
input_thread_t *p_input_thread;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return;
var_SetInteger( p_input_thread, "title", i_title );
vlc_object_release( p_input_thread );
//send event
libvlc_event_t event;
event.type = libvlc_MediaPlayerTitleChanged;
event.u.media_player_title_changed.new_title = i_title;
libvlc_event_send( p_mi->p_event_manager, &event );
}
int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
int i_title;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
i_title = var_GetInteger( p_input_thread, "title" );
vlc_object_release( p_input_thread );
return i_title;
}
int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
vlc_value_t val;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return -1;
int i_ret = var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
vlc_object_release( p_input_thread );
return i_ret == VLC_SUCCESS ? val.i_int : -1;
}
void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return;
int i_type = var_Type( p_input_thread, "next-chapter" );
var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
"next-chapter":"next-title" );
vlc_object_release( p_input_thread );
}
void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return;
int i_type = var_Type( p_input_thread, "next-chapter" );
var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
"prev-chapter":"prev-title" );
vlc_object_release( p_input_thread );
}
float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
double f_fps = 0.0;
if( p_input_thread )
{
if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
f_fps = 0.0;
vlc_object_release( p_input_thread );
}
return f_fps;
}
int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
{
bool b_will_play;
input_thread_t *p_input_thread =
libvlc_get_input_thread ( p_mi );
if ( !p_input_thread )
return false;
b_will_play = !p_input_thread->b_dead;
vlc_object_release( p_input_thread );
return b_will_play;
}
int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
{
var_SetFloat (p_mi, "rate", rate);
input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
if( !p_input_thread )
return 0;
var_SetFloat( p_input_thread, "rate", rate );
vlc_object_release( p_input_thread );
return 0;
}
float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
{
return var_GetFloat (p_mi, "rate");
}
libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
{
lock(p_mi);
libvlc_state_t state = p_mi->state;
unlock(p_mi);
return state;
}
int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
bool b_seekable;
p_input_thread = libvlc_get_input_thread ( p_mi );
if ( !p_input_thread )
return false;
b_seekable = var_GetBool( p_input_thread, "can-seek" );
vlc_object_release( p_input_thread );
return b_seekable;
}
void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
unsigned navigate )
{
static const vlc_action_t map[] =
{
INPUT_NAV_ACTIVATE, INPUT_NAV_UP, INPUT_NAV_DOWN,
INPUT_NAV_LEFT, INPUT_NAV_RIGHT,
};
if( navigate >= sizeof(map) / sizeof(map[0]) )
return;
input_thread_t *p_input = libvlc_get_input_thread ( p_mi );
if ( p_input == NULL )
return;
input_Control( p_input, map[navigate], NULL );
vlc_object_release( p_input );
}
/* internal function, used by audio, video */
libvlc_track_description_t *
libvlc_get_track_description( libvlc_media_player_t *p_mi,
const char *psz_variable )
{
input_thread_t *p_input = libvlc_get_input_thread( p_mi );
libvlc_track_description_t *p_track_description = NULL,
*p_actual, *p_previous;
if( !p_input )
return NULL;
vlc_value_t val_list, text_list;
int i_ret = var_Change( p_input, psz_variable, VLC_VAR_GETCHOICES, &val_list, &text_list );
if( i_ret != VLC_SUCCESS )
return NULL;
/* no tracks */
if( val_list.p_list->i_count <= 0 )
goto end;
p_track_description = ( libvlc_track_description_t * )
malloc( sizeof( libvlc_track_description_t ) );
if ( !p_track_description )
{
libvlc_printerr( "Not enough memory" );
goto end;
}
p_actual = p_track_description;
p_previous = NULL;
for( int i = 0; i < val_list.p_list->i_count; i++ )
{
if( !p_actual )
{
p_actual = ( libvlc_track_description_t * )
malloc( sizeof( libvlc_track_description_t ) );
if ( !p_actual )
{
libvlc_track_description_list_release( p_track_description );
libvlc_printerr( "Not enough memory" );
goto end;
}
}
p_actual->i_id = val_list.p_list->p_values[i].i_int;
p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
p_actual->p_next = NULL;
if( p_previous )
p_previous->p_next = p_actual;
p_previous = p_actual;
p_actual = NULL;
}
end:
var_FreeList( &val_list, &text_list );
vlc_object_release( p_input );
return p_track_description;
}
// Deprecated alias for libvlc_track_description_list_release
void libvlc_track_description_release( libvlc_track_description_t *p_td )
{
libvlc_track_description_list_release( p_td );
}
void libvlc_track_description_list_release( libvlc_track_description_t *p_td )
{
libvlc_track_description_t *p_actual, *p_before;
p_actual = p_td;
while ( p_actual )
{
free( p_actual->psz_name );
p_before = p_actual;
p_actual = p_before->p_next;
free( p_before );
}
}
int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
bool b_can_pause;
p_input_thread = libvlc_get_input_thread ( p_mi );
if ( !p_input_thread )
return false;
b_can_pause = var_GetBool( p_input_thread, "can-pause" );
vlc_object_release( p_input_thread );
return b_can_pause;
}
int libvlc_media_player_program_scrambled( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread;
bool b_program_scrambled;
p_input_thread = libvlc_get_input_thread ( p_mi );
if ( !p_input_thread )
return false;
b_program_scrambled = var_GetBool( p_input_thread, "program-scrambled" );
vlc_object_release( p_input_thread );
return b_program_scrambled;
}
void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
{
input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
if( p_input_thread != NULL )
{
var_TriggerCallback( p_input_thread, "frame-next" );
vlc_object_release( p_input_thread );
}
}
/**
* Private lookup table to get subpicture alignment flag values corresponding
* to a libvlc_position_t enumerated value.
*/
static const unsigned char position_subpicture_alignment[] = {
[libvlc_position_center] = 0,
[libvlc_position_left] = SUBPICTURE_ALIGN_LEFT,
[libvlc_position_right] = SUBPICTURE_ALIGN_RIGHT,
[libvlc_position_top] = SUBPICTURE_ALIGN_TOP,
[libvlc_position_top_left] = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT,
[libvlc_position_top_right] = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_RIGHT,
[libvlc_position_bottom] = SUBPICTURE_ALIGN_BOTTOM,
[libvlc_position_bottom_left] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_LEFT,
[libvlc_position_bottom_right] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_RIGHT
};
void libvlc_media_player_set_video_title_display( libvlc_media_player_t *p_mi, libvlc_position_t position, unsigned timeout )
{
assert( position >= libvlc_position_disable && position <= libvlc_position_bottom_right );
if ( position != libvlc_position_disable )
{
var_SetBool( p_mi, "video-title-show", true );
var_SetInteger( p_mi, "video-title-position", position_subpicture_alignment[position] );
var_SetInteger( p_mi, "video-title-timeout", timeout );
}
else
{
var_SetBool( p_mi, "video-title-show", false );
}
}
/**
* Maximum size of a formatted equalizer amplification band frequency value.
*
* The allowed value range is supposed to be constrained from -20.0 to 20.0.
*
* The format string " %.07f" with a minimum value of "-20" gives a maximum
* string length of e.g. " -19.1234567", i.e. 12 bytes (not including the null
* terminator).
*/
#define EQZ_BAND_VALUE_SIZE 12
int libvlc_media_player_set_equalizer( libvlc_media_player_t *p_mi, libvlc_equalizer_t *p_equalizer )
{
char bands[EQZ_BANDS_MAX * EQZ_BAND_VALUE_SIZE + 1];
if( p_equalizer != NULL )
{
for( unsigned i = 0, c = 0; i < EQZ_BANDS_MAX; i++ )
{
c += snprintf( bands + c, sizeof(bands) - c, " %.07f",
p_equalizer->f_amp[i] );
if( unlikely(c >= sizeof(bands)) )
return -1;
}
var_SetFloat( p_mi, "equalizer-preamp", p_equalizer->f_preamp );
var_SetString( p_mi, "equalizer-bands", bands );
}
var_SetString( p_mi, "audio-filter", p_equalizer ? "equalizer" : "" );
audio_output_t *p_aout = input_resource_HoldAout( p_mi->input.p_resource );
if( p_aout != NULL )
{
if( p_equalizer != NULL )
{
var_SetFloat( p_aout, "equalizer-preamp", p_equalizer->f_preamp );
var_SetString( p_aout, "equalizer-bands", bands );
}
var_SetString( p_aout, "audio-filter", p_equalizer ? "equalizer" : "" );
vlc_object_release( p_aout );
}
return 0;
}
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