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/*
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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
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