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fix null buffer in pre_buffer 

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@836 a93c3328-9c30-0410-af19-c9cd2b2d52af
This commit is contained in:
Anthony Minessale 2009-09-19 17:46:11 +00:00
parent 041e45eb78
commit 0779d8874f
1 changed files with 5 additions and 1 deletions
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6
libs/openzap/src/zap_io.c
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@ -250,6 +250,9 @@ static zap_status_t zap_channel_destroy(zap_channel_t *zchan)
zap_buffer_destroy(&zchan->gen_dtmf_buffer);
zap_buffer_destroy(&zchan->dtmf_buffer);
zap_buffer_destroy(&zchan->fsk_buffer);
zap_buffer_destroy(&zchan->pre_buffer);
zchan->pre_buffer_size = 0;
hashtable_destroy(zchan->variable_hash);
zap_safe_free(zchan->dtmf_hangup_buf);
@ -1200,6 +1203,7 @@ OZ_DECLARE(zap_status_t) zap_channel_done(zap_channel_t *zchan)
zap_clear_flag_locked(zchan, ZAP_CHANNEL_MEDIA);
zap_clear_flag_locked(zchan, ZAP_CHANNEL_ANSWERED);
zap_buffer_destroy(&zchan->pre_buffer);
zchan->pre_buffer_size = 0;
zchan->init_state = ZAP_CHANNEL_STATE_DOWN;
zchan->state = ZAP_CHANNEL_STATE_DOWN;
@ -2120,7 +2124,7 @@ OZ_DECLARE(zap_status_t) zap_channel_read(zap_channel_t *zchan, void *data, zap_
if (zchan->skip_read_frames > 0) {
zchan->skip_read_frames--;
}
} else if (zchan->pre_buffer_size) {
} else if (zchan->pre_buffer_size && zchan->pre_buffer) {
zap_buffer_write(zchan->pre_buffer, data, *datalen);
if (zap_buffer_inuse(zchan->pre_buffer) >= zchan->pre_buffer_size) {
zap_buffer_read(zchan->pre_buffer, data, *datalen);