/***************************************************************************** * audio_video.c: Audio/Video management : volume, snapshot, OSD ***************************************************************************** * Copyright (C) 2005 the VideoLAN team * $Id$ * * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.fr> * * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA. *****************************************************************************/ #include <mediacontrol_internal.h> #include <vlc/mediacontrol.h> #include <vlc/intf.h> #include <vlc/vout.h> #include <vlc/aout.h> #include <vlc_demux.h> #include <vlc_osd.h> #define HAS_SNAPSHOT 1 #ifdef HAS_SNAPSHOT #include <snapshot.h> #endif #include <stdlib.h> /* malloc(), free() */ #include <string.h> #include <errno.h> /* ENOMEM */ #include <stdio.h> #include <ctype.h> #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #ifdef HAVE_SYS_TIME_H # include <sys/time.h> #endif #ifdef HAVE_SYS_TYPES_H # include <sys/types.h> #endif #define RAISE( c, m ) exception->code = c; \ exception->message = strdup(m); mediacontrol_RGBPicture * mediacontrol_snapshot( mediacontrol_Instance *self, const mediacontrol_Position * a_position, mediacontrol_Exception *exception ) { mediacontrol_RGBPicture *retval = NULL; input_thread_t* p_input = self->p_playlist->p_input; vout_thread_t *p_vout = NULL; int i_datasize; snapshot_t **pointer; vlc_value_t val; int i_index; snapshot_t *p_best_snapshot; long searched_date; #ifdef HAS_SNAPSHOT int i_cachesize; #endif exception=mediacontrol_exception_init( exception ); /* if( var_Get( self->p_vlc, "snapshot-id", &val ) == VLC_SUCCESS ) p_vout = vlc_object_get( self->p_vlc, val.i_int ); */ /* FIXME: if in p_libvlc, we cannot have multiple video outputs */ /* Once corrected, search for snapshot-id to modify all instances */ if( var_Get( p_input, "snapshot-id", &val ) != VLC_SUCCESS ) { RAISE( mediacontrol_InternalException, "No snapshot-id in p_input" ); return NULL; } p_vout = vlc_object_get( self->p_vlc, val.i_int ); if( ! p_vout ) { RAISE( mediacontrol_InternalException, "No snapshot module" ); return NULL; } #ifdef HAS_SNAPSHOT /* We test if the vout is a snapshot module. We cannot test pvout_psz_object_name( which is NULL ). But we can check if there are snapshot-specific variables */ if( var_Get( p_vout, "snapshot-datasize", &val ) != VLC_SUCCESS ) { RAISE( mediacontrol_InternalException, "No snapshot module" ); vlc_object_release( p_vout ); return NULL; } i_datasize = val.i_int; /* Handle the a_position parameter */ if( ! ( a_position->origin == mediacontrol_RelativePosition && a_position->value == 0 ) ) { /* The position is not the current one. Go to it. */ mediacontrol_set_media_position( self, ( mediacontrol_Position* ) a_position, exception ); if( exception->code ) { vlc_object_release( p_vout ); return NULL; } } /* FIXME: We should not go further until we got past the position ( which means that we had the possibility to capture the right picture ). */ vlc_mutex_lock( &p_vout->picture_lock ); searched_date = mediacontrol_position2microsecond( p_input, ( mediacontrol_Position * ) a_position ); var_Get( p_vout, "snapshot-cache-size", &val ); i_cachesize = val.i_int ; var_Get( p_vout, "snapshot-list-pointer", &val ); pointer = ( snapshot_t ** )val.p_address; if( ! pointer ) { RAISE( mediacontrol_InternalException, "No available snapshot" ); vlc_mutex_unlock( &p_vout->picture_lock ); vlc_object_release( p_vout ); return NULL; } /* Find the more appropriate picture, based on date */ p_best_snapshot = pointer[0]; for( i_index = 1 ; i_index < i_cachesize ; i_index++ ) { long l_diff = pointer[i_index]->date - searched_date; if( l_diff > 0 && l_diff < abs( p_best_snapshot->date - searched_date )) { /* This one is closer, and _after_ the requested position */ p_best_snapshot = pointer[i_index]; } } /* FIXME: add a test for the case that no picture matched the test ( we have p_best_snapshot == pointer[0] */ retval = _mediacontrol_createRGBPicture( p_best_snapshot->i_width, p_best_snapshot->i_height, p_vout->output.i_chroma, p_best_snapshot->date, p_best_snapshot->p_data, i_datasize ); vlc_mutex_unlock( &p_vout->picture_lock ); vlc_object_release( p_vout ); #endif return retval; } mediacontrol_RGBPicture ** mediacontrol_all_snapshots( mediacontrol_Instance *self, mediacontrol_Exception *exception ) { mediacontrol_RGBPicture **retval = NULL; vout_thread_t *p_vout = NULL; int i_datasize; int i_cachesize; vlc_value_t val; int i_index; #ifdef HAS_SNAPSHOT snapshot_t **pointer; #endif exception=mediacontrol_exception_init( exception ); if( var_Get( self->p_playlist->p_input, "snapshot-id", &val ) == VLC_SUCCESS ) p_vout = vlc_object_get( self->p_vlc, val.i_int ); if( ! p_vout ) { RAISE( mediacontrol_InternalException, "No snapshot module" ); return NULL; } #ifdef HAS_SNAPSHOT /* We test if the vout is a snapshot module. We cannot test pvout_psz_object_name( which is NULL ). But we can check if there are snapshot-specific variables */ if( var_Get( p_vout, "snapshot-datasize", &val ) != VLC_SUCCESS ) { RAISE( mediacontrol_InternalException, "No snapshot module" ); vlc_object_release( p_vout ); return NULL; } i_datasize = val.i_int; vlc_mutex_lock( &p_vout->picture_lock ); var_Get( p_vout, "snapshot-cache-size", &val ); i_cachesize = val.i_int ; var_Get( p_vout, "snapshot-list-pointer", &val ); pointer = ( snapshot_t ** )val.p_address; if( ! pointer ) { RAISE( mediacontrol_InternalException, "No available picture" ); vlc_mutex_unlock( &p_vout->picture_lock ); vlc_object_release( p_vout ); return NULL; } retval = ( mediacontrol_RGBPicture** )malloc( (i_cachesize + 1 ) * sizeof( char* )); for( i_index = 0 ; i_index < i_cachesize ; i_index++ ) { snapshot_t *p_s = pointer[i_index]; mediacontrol_RGBPicture *p_rgb; p_rgb = _mediacontrol_createRGBPicture( p_s->i_width, p_s->i_height, p_vout->output.i_chroma, p_s->date, p_s->p_data, i_datasize ); retval[i_index] = p_rgb; } retval[i_cachesize] = NULL; vlc_mutex_unlock( &p_vout->picture_lock ); vlc_object_release( p_vout ); #endif return retval; } int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel, char *psz_string, text_style_t *p_style, int i_flags, int i_hmargin, int i_vmargin, mtime_t i_start, mtime_t i_stop ) { subpicture_t *p_spu; video_format_t fmt; if( !psz_string ) return VLC_EGENERIC; p_spu = spu_CreateSubpicture( p_vout->p_spu ); if( !p_spu ) return VLC_EGENERIC; /* Create a new subpicture region */ memset( &fmt, 0, sizeof(video_format_t) ); fmt.i_chroma = VLC_FOURCC('T','E','X','T'); fmt.i_aspect = 0; fmt.i_width = fmt.i_height = 0; fmt.i_x_offset = fmt.i_y_offset = 0; p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt ); if( !p_spu->p_region ) { msg_Err( p_vout, "cannot allocate SPU region" ); spu_DestroySubpicture( p_vout->p_spu, p_spu ); return VLC_EGENERIC; } p_spu->p_region->psz_text = strdup( psz_string ); p_spu->i_start = i_start; p_spu->i_stop = i_stop; p_spu->b_ephemer = VLC_FALSE; p_spu->b_absolute = VLC_FALSE; p_spu->i_x = i_hmargin; p_spu->i_y = i_vmargin; p_spu->i_flags = i_flags; p_spu->i_channel = i_channel; spu_DisplaySubpicture( p_vout->p_spu, p_spu ); return VLC_SUCCESS; } void mediacontrol_display_text( mediacontrol_Instance *self, const char * message, const mediacontrol_Position * begin, const mediacontrol_Position * end, mediacontrol_Exception *exception ) { input_thread_t *p_input = NULL; vout_thread_t *p_vout = NULL; char* psz_message; psz_message = strdup( message ); if( !psz_message ) { RAISE( mediacontrol_InternalException, "No more memory" ); return; } p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD ); if( ! p_vout ) { RAISE( mediacontrol_InternalException, "No video output" ); return; } if( begin->origin == mediacontrol_RelativePosition && begin->value == 0 && end->origin == mediacontrol_RelativePosition ) { mtime_t i_duration = 0; mtime_t i_now = mdate(); i_duration = 1000 * mediacontrol_unit_convert( self->p_playlist->p_input, end->key, mediacontrol_MediaTime, end->value ); mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL, OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0, i_now, i_now + i_duration ); } else { mtime_t i_debut, i_fin, i_now; p_input = self->p_playlist->p_input; if( ! p_input ) { RAISE( mediacontrol_InternalException, "No input" ); vlc_object_release( p_vout ); return; } /* FIXME */ /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */ i_now = mdate(); i_debut = mediacontrol_position2microsecond( p_input, ( mediacontrol_Position* ) begin ); i_debut += i_now; i_fin = mediacontrol_position2microsecond( p_input, ( mediacontrol_Position * ) end ); i_fin += i_now; vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL, OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0, i_debut, i_fin ); } vlc_object_release( p_vout ); } unsigned short mediacontrol_sound_get_volume( mediacontrol_Instance *self, mediacontrol_Exception *exception ) { short retval; audio_volume_t i_volume; if( !self->p_intf ) { RAISE( mediacontrol_InternalException, "No interface module" ); return 0; } aout_VolumeGet( self->p_intf, &i_volume ); retval = i_volume; return retval; } void mediacontrol_sound_set_volume( mediacontrol_Instance *self, const unsigned short volume, mediacontrol_Exception *exception ) { if( !self->p_intf ) { RAISE( mediacontrol_InternalException, "No interface module" ); return; } aout_VolumeSet( self->p_intf,( audio_volume_t )volume ); } vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self, WINDOWHANDLE visual_id, mediacontrol_Exception *exception ) { vlc_value_t value; int ret; if( !self->p_vlc ) { RAISE( mediacontrol_InternalException, "No vlc reference" ); return 0; } value.i_int=visual_id; ret = var_Set(self->p_vlc, "drawable", value); return (ret == VLC_SUCCESS); }