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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
*/
#include "msbuffer.h"
#include "msutils.h"
#include <string.h>
MSBuffer * ms_buffer_new(guint32 size)
{
MSBuffer *buf;
buf=(MSBuffer*)g_malloc(sizeof(MSBuffer)+size);
buf->ref_count=0;
buf->size=size;
ms_trace("ms_buffer_new: Allocating buffer of %i bytes.",size);
/* allocate the data buffer: there is a lot of optmisation that can be done by using a pool of cached buffers*/
buf->buffer=((char*)(buf))+sizeof(MSBuffer); /* to avoid to do two allocations,
buffer info and buffer are contigous.*/
buf->flags=MS_BUFFER_CONTIGUOUS;
return(buf);
}
MSBuffer *ms_buffer_alloc(gint flags)
{
MSBuffer *buf;
buf=(MSBuffer*)g_malloc(sizeof(MSBuffer));
buf->ref_count=0;
buf->size=0;
buf->buffer=NULL;
buf->flags=0;
return(buf);
}
void ms_buffer_destroy(MSBuffer *buf)
{
if (buf->flags & MS_BUFFER_CONTIGUOUS){
g_free(buf);
}
else {
g_free(buf->buffer);
g_free(buf);
}
}
MSMessage *ms_message_alloc()
{
MSMessage *m=g_malloc(sizeof(MSMessage));
memset(m,0,sizeof(MSMessage));
return m;
}
MSMessage *ms_message_new(gint size)
{
MSMessage *m=ms_message_alloc();
MSBuffer *buf=ms_buffer_new(size);
ms_message_set_buf(m,buf);
return m;
}
void ms_message_destroy(MSMessage *m)
{
/* the buffer is freed if its ref_count goes to zero */
if (m->buffer!=NULL){
m->buffer->ref_count--;
if (m->buffer->ref_count==0) ms_buffer_destroy(m->buffer);
}
g_free(m);
}
MSMessage * ms_message_dup(MSMessage *m)
{
MSMessage *msg=ms_message_alloc();
ms_message_set_buf(msg,m->buffer);
return msg;
}
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