| /* |
| The mediastreamer library aims at providing modular media processing and I/O |
| for linphone, but also for any telephony application. |
| Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org |
| |
| This library 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 library 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 library; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef MSREAD_H |
| #define MSREAD_H |
| |
| #include "msfilter.h" |
| #include "mssync.h" |
| |
| /*this is the class that implements file reading source filter*/ |
| |
| #define MSREAD_MAX_OUTPUTS 1 /* max output per filter*/ |
| |
| #define MSREAD_DEF_GRAN 640 /* the default granularity*/ |
| |
| typedef enum{ |
| MS_READ_STATE_STARTED, |
| MS_READ_STATE_STOPPED, |
| MS_READ_STATE_EOF |
| }MSReadState; |
| |
| typedef struct _MSRead |
| { |
| /* the MSRead derivates from MSFilter, so the MSFilter object MUST be the first of the MSRead object |
| in order to the object mechanism to work*/ |
| MSFilter filter; |
| MSFifo *foutputs[MSREAD_MAX_OUTPUTS]; |
| MSQueue *qoutputs[MSREAD_MAX_OUTPUTS]; |
| MSSync *sync; |
| gint rate; |
| gint fd; /* the file descriptor of the file being read*/ |
| gint gran; /*granularity*/ /* for use with queues */ |
| gint need_swap; |
| gint state; |
| } MSRead; |
| |
| typedef struct _MSReadClass |
| { |
| /* the MSRead derivates from MSFilter, so the MSFilter class MUST be the first of the MSRead class |
| in order to the class mechanism to work*/ |
| MSFilterClass parent_class; |
| } MSReadClass; |
| |
| /* PUBLIC */ |
| #define MS_READ(filter) ((MSRead*)(filter)) |
| #define MS_READ_CLASS(klass) ((MSReadClass*)(klass)) |
| MSFilter * ms_read_new(char *name); |
| /* set the granularity for reading file on disk */ |
| #define ms_read_set_bufsize(filter,sz) (filter)->gran=(sz) |
| |
| /* FOR INTERNAL USE*/ |
| void ms_read_init(MSRead *r); |
| void ms_read_class_init(MSReadClass *klass); |
| void ms_read_destroy( MSRead *obj); |
| void ms_read_process(MSRead *r); |
| void ms_read_setup(MSRead *r, MSSync *sync); |
| |
| typedef enum{ |
| MS_READ_EVENT_EOF /* end of file */ |
| } MSReadEvent; |
| |
| |
| #endif |