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() */
43 #include <sys/types.h>
45 libvlc_time_t private_mediacontrol_unit_convert( libvlc_media_player_t *p_media_player,
46 mediacontrol_PositionKey from,
47 mediacontrol_PositionKey to,
58 case mediacontrol_MediaTime:
59 if( to == mediacontrol_ByteCount )
61 /* FIXME Unsupported */
63 /* return value * 50 * p_input->stream.i_mux_rate / 1000; */
66 if( to == mediacontrol_SampleCount )
70 f_fps = libvlc_media_player_get_rate( p_media_player );
74 return( value * f_fps / 1000.0 );
77 /* See http://catb.org/~esr/jargon/html/entry/can-t-happen.html */
80 case mediacontrol_SampleCount:
84 f_fps = libvlc_media_player_get_rate( p_media_player );
88 if( to == mediacontrol_ByteCount )
92 /* return ( int64_t )( value * 50 * p_input->stream.i_mux_rate / f_fps ); */
96 if( to == mediacontrol_MediaTime )
97 return( int64_t )( value * 1000.0 / ( double )f_fps );
102 case mediacontrol_ByteCount:
110 /* Converts a mediacontrol_Position into a time in microseconds in
113 private_mediacontrol_position2microsecond( libvlc_media_player_t * p_media_player,
114 const mediacontrol_Position * pos )
116 switch( pos->origin )
118 case mediacontrol_AbsolutePosition:
119 return ( 1000 * private_mediacontrol_unit_convert( p_media_player,
121 mediacontrol_MediaTime, /* to */
124 case mediacontrol_RelativePosition:
126 libvlc_time_t l_time = 0;
127 libvlc_time_t l_pos = 0;
129 l_time = libvlc_media_player_get_time( p_media_player );
130 /* Ignore exception, we will assume a 0 time value */
132 l_pos = private_mediacontrol_unit_convert( p_media_player,
134 mediacontrol_MediaTime,
136 return 1000 * ( l_time + l_pos );
139 case mediacontrol_ModuloPosition:
141 libvlc_time_t l_time = 0;
142 libvlc_time_t l_length = 0;
143 libvlc_time_t l_pos = 0;
145 l_length = libvlc_media_player_get_length( p_media_player );
149 l_time = libvlc_media_player_get_time( p_media_player );
150 /* Ignore exception, we will assume a 0 time value */
152 l_pos = private_mediacontrol_unit_convert( p_media_player,
154 mediacontrol_MediaTime,
157 return 1000 * ( ( l_time + l_pos ) % l_length );
165 mediacontrol_RGBPicture__free( mediacontrol_RGBPicture* pic )
175 mediacontrol_StreamInformation__free( mediacontrol_StreamInformation* p_si )
185 mediacontrol_Exception*
186 mediacontrol_exception_create( void )
188 mediacontrol_Exception* exception;
190 exception = ( mediacontrol_Exception* )malloc( sizeof( mediacontrol_Exception ) );
191 mediacontrol_exception_init( exception );
196 mediacontrol_exception_init( mediacontrol_Exception *exception )
201 exception->message = NULL;
206 mediacontrol_exception_cleanup( mediacontrol_Exception *exception )
209 free( exception->message );
213 mediacontrol_exception_free( mediacontrol_Exception *exception )
215 mediacontrol_exception_cleanup( exception );
220 * Allocates and initializes a mediacontrol_RGBPicture object.
222 * @param i_width: picture width
223 * @param i_height: picture width
224 * @param i_chroma: picture chroma
225 * @param l_date: picture timestamp
226 * @param p_data: pointer to the data. The data will be directly used, not copied.
227 * @param i_datasize: data size in bytes
229 * @return the new object, or NULL on error.
231 mediacontrol_RGBPicture*
232 private_mediacontrol_createRGBPicture( int i_width, int i_height, long i_chroma, int64_t l_date,
233 char* p_data, int i_datasize )
235 mediacontrol_RGBPicture *retval;
237 retval = ( mediacontrol_RGBPicture * )malloc( sizeof( mediacontrol_RGBPicture ) );
240 retval->width = i_width;
241 retval->height = i_height;
242 retval->type = i_chroma;
243 retval->date = l_date;
244 retval->size = i_datasize;
245 retval->data = p_data;