1 /*****************************************************************************
2 * util.c: Utility functions and exceptions management
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
28 #include "mediacontrol_internal.h"
29 #include <vlc/mediacontrol.h>
31 #include <vlc_common.h>
35 #include <stdlib.h> /* malloc(), free() */
38 #include <errno.h> /* ENOMEM */
45 #ifdef HAVE_SYS_TIME_H
46 # include <sys/time.h>
48 #ifdef HAVE_SYS_TYPES_H
49 # include <sys/types.h>
52 libvlc_time_t private_mediacontrol_unit_convert( libvlc_media_player_t *p_media_player,
53 mediacontrol_PositionKey from,
54 mediacontrol_PositionKey to,
65 case mediacontrol_MediaTime:
66 if( to == mediacontrol_ByteCount )
68 /* FIXME Unsupported */
70 /* return value * 50 * p_input->stream.i_mux_rate / 1000; */
73 if( to == mediacontrol_SampleCount )
76 libvlc_exception_t ex;
77 libvlc_exception_init( &ex );
79 f_fps = libvlc_media_player_get_rate( p_media_player, &ex );
83 return( value * f_fps / 1000.0 );
86 /* See http://catb.org/~esr/jargon/html/entry/can-t-happen.html */
89 case mediacontrol_SampleCount:
92 libvlc_exception_t ex;
93 libvlc_exception_init( &ex );
95 f_fps = libvlc_media_player_get_rate( p_media_player, &ex );
99 if( to == mediacontrol_ByteCount )
103 /* return ( int64_t )( value * 50 * p_input->stream.i_mux_rate / f_fps ); */
107 if( to == mediacontrol_MediaTime )
108 return( int64_t )( value * 1000.0 / ( double )f_fps );
113 case mediacontrol_ByteCount:
121 /* Converts a mediacontrol_Position into a time in microseconds in
124 private_mediacontrol_position2microsecond( libvlc_media_player_t * p_media_player,
125 const mediacontrol_Position * pos )
127 switch( pos->origin )
129 case mediacontrol_AbsolutePosition:
130 return ( 1000 * private_mediacontrol_unit_convert( p_media_player,
132 mediacontrol_MediaTime, /* to */
135 case mediacontrol_RelativePosition:
137 libvlc_time_t l_time = 0;
138 libvlc_time_t l_pos = 0;
139 libvlc_exception_t ex;
140 libvlc_exception_init( &ex );
142 l_time = libvlc_media_player_get_time( p_media_player, &ex );
143 /* Ignore exception, we will assume a 0 time value */
145 l_pos = private_mediacontrol_unit_convert( p_media_player,
147 mediacontrol_MediaTime,
149 return 1000 * ( l_time + l_pos );
152 case mediacontrol_ModuloPosition:
154 libvlc_time_t l_time = 0;
155 libvlc_time_t l_length = 0;
156 libvlc_time_t l_pos = 0;
157 libvlc_exception_t ex;
158 libvlc_exception_init( &ex );
160 l_length = libvlc_media_player_get_length( p_media_player, &ex );
164 l_time = libvlc_media_player_get_time( p_media_player, &ex );
165 /* Ignore exception, we will assume a 0 time value */
167 l_pos = private_mediacontrol_unit_convert( p_media_player,
169 mediacontrol_MediaTime,
172 return 1000 * ( ( l_time + l_pos ) % l_length );
180 mediacontrol_RGBPicture__free( mediacontrol_RGBPicture* pic )
190 mediacontrol_StreamInformation__free( mediacontrol_StreamInformation* p_si )
200 mediacontrol_Exception*
201 mediacontrol_exception_create( void )
203 mediacontrol_Exception* exception;
205 exception = ( mediacontrol_Exception* )malloc( sizeof( mediacontrol_Exception ) );
206 mediacontrol_exception_init( exception );
211 mediacontrol_exception_init( mediacontrol_Exception *exception )
216 exception->message = NULL;
221 mediacontrol_exception_cleanup( mediacontrol_Exception *exception )
224 free( exception->message );
228 mediacontrol_exception_free( mediacontrol_Exception *exception )
230 mediacontrol_exception_cleanup( exception );
235 * Allocates and initializes a mediacontrol_RGBPicture object.
237 * @param i_width: picture width
238 * @param i_height: picture width
239 * @param i_chroma: picture chroma
240 * @param l_date: picture timestamp
241 * @param p_data: pointer to the data. The data will be directly used, not copied.
242 * @param i_datasize: data size in bytes
244 * @return the new object, or NULL on error.
246 mediacontrol_RGBPicture*
247 private_mediacontrol_createRGBPicture( int i_width, int i_height, long i_chroma, int64_t l_date,
248 char* p_data, int i_datasize )
250 mediacontrol_RGBPicture *retval;
252 retval = ( mediacontrol_RGBPicture * )malloc( sizeof( mediacontrol_RGBPicture ) );
255 retval->width = i_width;
256 retval->height = i_height;
257 retval->type = i_chroma;
258 retval->date = l_date;
259 retval->size = i_datasize;
260 retval->data = p_data;