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rtp_engine: fix rtp payloads copy and improve argument names

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In function ast_rtp_instance_early _bridge_make_compatible the
use of instance 0/1 as arguments doesn't clearly communicate a
direction that the copying of payloads from the source channel
to the destination channel will occur, making it more probable
to have the arguments to ast_rtp_codecs_payloads_copy() put in
the reverse order.  This patch renames the arguments with _dst
and _src suffixes and corrects the copy direction.



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@402000 65c4cc65-6c06-0410-ace0-fbb531ad65f3
changes/98/198/1
Scott Griepentrog 12 years ago
parent 08f1768dc3
commit ceab8bf73c
2 changed files with 48 additions and 48 deletions
Show Stats Download Patch File Download Diff File

6
include/asterisk/rtp_engine.h
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@ -1411,12 +1411,12 @@ struct ast_rtp_instance *ast_rtp_instance_get_bridged(struct ast_rtp_instance *i
/*!
* \brief Make two channels compatible for early bridging
*
* \param c0 First channel part of the bridge
* \param c1 Second channel part of the bridge
* \param c_dst Destination channel to copy to
* \param c_src Source channel to copy from
*
* \since 1.8
*/
void ast_rtp_instance_early_bridge_make_compatible(struct ast_channel *c0, struct ast_channel *c1);
void ast_rtp_instance_early_bridge_make_compatible(struct ast_channel *c_dst, struct ast_channel *c_src);
/*!
* \brief Early bridge two channels that use RTP instances

90
main/rtp_engine.c
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@ -1409,89 +1409,89 @@ struct ast_rtp_instance *ast_rtp_instance_get_bridged(struct ast_rtp_instance *i
return instance->bridged;
}
void ast_rtp_instance_early_bridge_make_compatible(struct ast_channel *c0, struct ast_channel *c1)
{
struct ast_rtp_instance *instance0 = NULL, *instance1 = NULL,
*vinstance0 = NULL, *vinstance1 = NULL,
*tinstance0 = NULL, *tinstance1 = NULL;
struct ast_rtp_glue *glue0, *glue1;
enum ast_rtp_glue_result audio_glue0_res = AST_RTP_GLUE_RESULT_FORBID, video_glue0_res = AST_RTP_GLUE_RESULT_FORBID;
enum ast_rtp_glue_result audio_glue1_res = AST_RTP_GLUE_RESULT_FORBID, video_glue1_res = AST_RTP_GLUE_RESULT_FORBID;
format_t codec0 = 0, codec1 = 0;
void ast_rtp_instance_early_bridge_make_compatible(struct ast_channel *c_dst, struct ast_channel *c_src)
{
struct ast_rtp_instance *instance_dst = NULL, *instance_src = NULL,
*vinstance_dst = NULL, *vinstance_src = NULL,
*tinstance_dst = NULL, *tinstance_src = NULL;
struct ast_rtp_glue *glue_dst, *glue_src;
enum ast_rtp_glue_result audio_glue_dst_res = AST_RTP_GLUE_RESULT_FORBID, video_glue_dst_res = AST_RTP_GLUE_RESULT_FORBID;
enum ast_rtp_glue_result audio_glue_src_res = AST_RTP_GLUE_RESULT_FORBID, video_glue_src_res = AST_RTP_GLUE_RESULT_FORBID;
format_t codec_dst = 0, codec_src = 0;
int res = 0;
/* Lock both channels so we can look for the glue that binds them together */
ast_channel_lock(c0);
while (ast_channel_trylock(c1)) {
ast_channel_unlock(c0);
ast_channel_lock(c_dst);
while (ast_channel_trylock(c_src)) {
ast_channel_unlock(c_dst);
usleep(1);
ast_channel_lock(c0);
ast_channel_lock(c_dst);
}
/* Grab glue that binds each channel to something using the RTP engine */
if (!(glue0 = ast_rtp_instance_get_glue(c0->tech->type)) || !(glue1 = ast_rtp_instance_get_glue(c1->tech->type))) {
ast_debug(1, "Can't find native functions for channel '%s'\n", glue0 ? c1->name : c0->name);
if (!(glue_dst = ast_rtp_instance_get_glue(c_dst->tech->type)) || !(glue_src = ast_rtp_instance_get_glue(c_src->tech->type))) {
ast_debug(1, "Can't find native functions for channel '%s'\n", glue_dst ? c_src->name : c_dst->name);
goto done;
}
audio_glue0_res = glue0->get_rtp_info(c0, &instance0);
video_glue0_res = glue0->get_vrtp_info ? glue0->get_vrtp_info(c0, &vinstance0) : AST_RTP_GLUE_RESULT_FORBID;
audio_glue_dst_res = glue_dst->get_rtp_info(c_dst, &instance_dst);
video_glue_dst_res = glue_dst->get_vrtp_info ? glue_dst->get_vrtp_info(c_dst, &vinstance_dst) : AST_RTP_GLUE_RESULT_FORBID;
audio_glue1_res = glue1->get_rtp_info(c1, &instance1);
video_glue1_res = glue1->get_vrtp_info ? glue1->get_vrtp_info(c1, &vinstance1) : AST_RTP_GLUE_RESULT_FORBID;
audio_glue_src_res = glue_src->get_rtp_info(c_src, &instance_src);
video_glue_src_res = glue_src->get_vrtp_info ? glue_src->get_vrtp_info(c_src, &vinstance_src) : AST_RTP_GLUE_RESULT_FORBID;
/* If we are carrying video, and both sides are not going to remotely bridge... fail the native bridge */
if (video_glue0_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue0_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue0_res != AST_RTP_GLUE_RESULT_REMOTE)) {
audio_glue0_res = AST_RTP_GLUE_RESULT_FORBID;
if (video_glue_dst_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue_dst_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue_dst_res != AST_RTP_GLUE_RESULT_REMOTE)) {
audio_glue_dst_res = AST_RTP_GLUE_RESULT_FORBID;
}
if (video_glue1_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue1_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue1_res != AST_RTP_GLUE_RESULT_REMOTE)) {
audio_glue1_res = AST_RTP_GLUE_RESULT_FORBID;
if (video_glue_src_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue_src_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue_src_res != AST_RTP_GLUE_RESULT_REMOTE)) {
audio_glue_src_res = AST_RTP_GLUE_RESULT_FORBID;
}
if (audio_glue0_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue0_res == AST_RTP_GLUE_RESULT_FORBID || video_glue0_res == AST_RTP_GLUE_RESULT_REMOTE) && glue0->get_codec) {
codec0 = glue0->get_codec(c0);
if (audio_glue_dst_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue_dst_res == AST_RTP_GLUE_RESULT_FORBID || video_glue_dst_res == AST_RTP_GLUE_RESULT_REMOTE) && glue_dst->get_codec) {
codec_dst = glue_dst->get_codec(c_dst);
}
if (audio_glue1_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue1_res == AST_RTP_GLUE_RESULT_FORBID || video_glue1_res == AST_RTP_GLUE_RESULT_REMOTE) && glue1->get_codec) {
codec1 = glue1->get_codec(c1);
if (audio_glue_src_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue_src_res == AST_RTP_GLUE_RESULT_FORBID || video_glue_src_res == AST_RTP_GLUE_RESULT_REMOTE) && glue_src->get_codec) {
codec_src = glue_src->get_codec(c_src);
}
/* If any sort of bridge is forbidden just completely bail out and go back to generic bridging */
if (audio_glue0_res != AST_RTP_GLUE_RESULT_REMOTE || audio_glue1_res != AST_RTP_GLUE_RESULT_REMOTE) {
if (audio_glue_dst_res != AST_RTP_GLUE_RESULT_REMOTE || audio_glue_src_res != AST_RTP_GLUE_RESULT_REMOTE) {
goto done;
}
/* Make sure we have matching codecs */
if (!(codec0 & codec1)) {
if (!(codec_dst & codec_src)) {
goto done;
}
ast_rtp_codecs_payloads_copy(&instance0->codecs, &instance1->codecs, instance1);
ast_rtp_codecs_payloads_copy(&instance_src->codecs, &instance_dst->codecs, instance_dst);
if (vinstance0 && vinstance1) {
ast_rtp_codecs_payloads_copy(&vinstance0->codecs, &vinstance1->codecs, vinstance1);
if (vinstance_dst && vinstance_src) {
ast_rtp_codecs_payloads_copy(&vinstance_src->codecs, &vinstance_dst->codecs, vinstance_dst);
}
if (tinstance0 && tinstance1) {
ast_rtp_codecs_payloads_copy(&tinstance0->codecs, &tinstance1->codecs, tinstance1);
if (tinstance_dst && tinstance_src) {
ast_rtp_codecs_payloads_copy(&tinstance_src->codecs, &tinstance_dst->codecs, tinstance_dst);
}
if (glue0->update_peer(c0, instance1, vinstance1, tinstance1, codec1, 0)) {
ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", c0->name, c1 ? c1->name : "<unspecified>");
if (glue_dst->update_peer(c_dst, instance_src, vinstance_src, tinstance_src, codec_src, 0)) {
ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", c_dst->name, c_src ? c_src->name : "<unspecified>");
}
res = 0;
done:
ast_channel_unlock(c0);
ast_channel_unlock(c1);
ast_channel_unlock(c_dst);
ast_channel_unlock(c_src);
unref_instance_cond(&instance0);
unref_instance_cond(&instance1);
unref_instance_cond(&vinstance0);
unref_instance_cond(&vinstance1);
unref_instance_cond(&tinstance0);
unref_instance_cond(&tinstance1);
unref_instance_cond(&instance_dst);
unref_instance_cond(&instance_src);
unref_instance_cond(&vinstance_dst);
unref_instance_cond(&vinstance_src);
unref_instance_cond(&tinstance_dst);
unref_instance_cond(&tinstance_src);
if (!res) {
ast_debug(1, "Seeded SDP of '%s' with that of '%s'\n", c0->name, c1 ? c1->name : "<unspecified>");
ast_debug(1, "Seeded SDP of '%s' with that of '%s'\n", c_dst->name, c_src ? c_src->name : "<unspecified>");
}
}

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