--- /dev/null
+/*****************************************************************************
+ * audio_video.c: Audio/Video management : volume, snapshot, OSD
+ *****************************************************************************
+ * Copyright (C) 2005 VideoLAN
+ * $Id: vlc.c 10786 2005-04-23 23:19:17Z zorglub $
+ *
+ * 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 <vlc/control.h>
+
+#include <vlc/intf.h>
+#include <vlc/vout.h>
+#include <vlc/aout.h>
+#include <vlc_demux.h>
+
+#include <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
+#include <sys/types.h>
+
+#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 );
+}
+
+bool 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);
+}
projects / vlc / blobdiff