comparison: src/mediastreamer/msbuffer.c
src/mediastreamer/msbuffer.c
- branch
- gaim
- changeset 20470
- 77693555855f
- parent 13071
- b98e72d4089a
- parent 20469
- b2836a24d81e
- child 20471
- 1966704b3e42
equal
deleted
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replaced
| 13071:b98e72d4089a | 20470:77693555855f |
|---|---|
| 1 /* | |
| 2 The mediastreamer library aims at providing modular media processing and I/O | |
| 3 for linphone, but also for any telephony application. | |
| 4 Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org | |
| 5 | |
| 6 This library is free software; you can redistribute it and/or | |
| 7 modify it under the terms of the GNU Lesser General Public | |
| 8 License as published by the Free Software Foundation; either | |
| 9 version 2.1 of the License, or (at your option) any later version. | |
| 10 | |
| 11 This library is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 Lesser General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU Lesser General Public | |
| 17 License along with this library; if not, write to the Free Software | |
| 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 19 */ | |
| 20 | |
| 21 #include "msbuffer.h" | |
| 22 #include "msutils.h" | |
| 23 #include <string.h> | |
| 24 | |
| 25 | |
| 26 | |
| 27 MSBuffer * ms_buffer_new(guint32 size) | |
| 28 { | |
| 29 MSBuffer *buf; | |
| 30 buf=(MSBuffer*)g_malloc(sizeof(MSBuffer)+size); | |
| 31 buf->ref_count=0; | |
| 32 buf->size=size; | |
| 33 ms_trace("ms_buffer_new: Allocating buffer of %i bytes.",size); | |
| 34 /* allocate the data buffer: there is a lot of optmisation that can be done by using a pool of cached buffers*/ | |
| 35 buf->buffer=((char*)(buf))+sizeof(MSBuffer); /* to avoid to do two allocations, | |
| 36 buffer info and buffer are contigous.*/ | |
| 37 buf->flags=MS_BUFFER_CONTIGUOUS; | |
| 38 return(buf); | |
| 39 } | |
| 40 | |
| 41 MSBuffer *ms_buffer_alloc(gint flags) | |
| 42 { | |
| 43 MSBuffer *buf; | |
| 44 buf=(MSBuffer*)g_malloc(sizeof(MSBuffer)); | |
| 45 buf->ref_count=0; | |
| 46 buf->size=0; | |
| 47 buf->buffer=NULL; | |
| 48 buf->flags=0; | |
| 49 return(buf); | |
| 50 } | |
| 51 | |
| 52 | |
| 53 void ms_buffer_destroy(MSBuffer *buf) | |
| 54 { | |
| 55 if (buf->flags & MS_BUFFER_CONTIGUOUS){ | |
| 56 g_free(buf); | |
| 57 } | |
| 58 else { | |
| 59 g_free(buf->buffer); | |
| 60 g_free(buf); | |
| 61 } | |
| 62 } | |
| 63 | |
| 64 MSMessage *ms_message_alloc() | |
| 65 { | |
| 66 MSMessage *m=g_malloc(sizeof(MSMessage)); | |
| 67 memset(m,0,sizeof(MSMessage)); | |
| 68 return m; | |
| 69 } | |
| 70 | |
| 71 MSMessage *ms_message_new(gint size) | |
| 72 { | |
| 73 MSMessage *m=ms_message_alloc(); | |
| 74 MSBuffer *buf=ms_buffer_new(size); | |
| 75 ms_message_set_buf(m,buf); | |
| 76 return m; | |
| 77 } | |
| 78 | |
| 79 void ms_message_destroy(MSMessage *m) | |
| 80 { | |
| 81 /* the buffer is freed if its ref_count goes to zero */ | |
| 82 if (m->buffer!=NULL){ | |
| 83 m->buffer->ref_count--; | |
| 84 if (m->buffer->ref_count==0) ms_buffer_destroy(m->buffer); | |
| 85 } | |
| 86 g_free(m); | |
| 87 } | |
| 88 | |
| 89 MSMessage * ms_message_dup(MSMessage *m) | |
| 90 { | |
| 91 MSMessage *msg=ms_message_alloc(); | |
| 92 ms_message_set_buf(msg,m->buffer); | |
| 93 return msg; | |
| 94 } |
