From e7bbe31f8ff1f3bde432d22e60677d2038cca72c Mon Sep 17 00:00:00 2001 From: "Kevin P. Fleming" Date: Mon, 4 Apr 2005 03:28:38 +0000 Subject: optimize codec selection and format changing code force all transcode paths to use AST_FORMAT_SLINEAR as the frames pass through the bridge (can be disabled using the 'transcode_via_sln' setting in th 'options' setting in asteris.conf) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5376 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- channel.c | 120 +++++++++++++++++++++++++++++--------------------------------- 1 file changed, 56 insertions(+), 64 deletions(-) (limited to 'channel.c') diff --git a/channel.c b/channel.c index 0f73af1d7..459729082 100755 --- a/channel.c +++ b/channel.c @@ -1814,71 +1814,59 @@ int ast_write(struct ast_channel *chan, struct ast_frame *fr) return res; } -int ast_set_write_format(struct ast_channel *chan, int fmts) +static int set_format(struct ast_channel *chan, int fmt, int *rawformat, int *format, + struct ast_trans_pvt **trans, const int direction) { - int fmt; int native; int res; - ast_mutex_lock(&chan->lock); native = chan->nativeformats; - fmt = fmts; - - res = ast_translator_best_choice(&native, &fmt); + /* Find a translation path from the native format to one of the desired formats */ + if (!direction) + /* reading */ + res = ast_translator_best_choice(&fmt, &native); + else + /* writing */ + res = ast_translator_best_choice(&native, &fmt); + if (res < 0) { ast_log(LOG_NOTICE, "Unable to find a path from %s to %s\n", - ast_getformatname(fmts), ast_getformatname(chan->nativeformats)); - ast_mutex_unlock(&chan->lock); + ast_getformatname(native), ast_getformatname(fmt)); return -1; } - /* Now we have a good choice for both. We'll write using our native format. */ - chan->rawwriteformat = native; + /* Now we have a good choice for both. */ + ast_mutex_lock(&chan->lock); + *rawformat = native; /* User perspective is fmt */ - chan->writeformat = fmt; - /* Free any write translation we have right now */ - if (chan->writetrans) - ast_translator_free_path(chan->writetrans); - /* Build a translation path from the user write format to the raw writing format */ - chan->writetrans = ast_translator_build_path(chan->rawwriteformat, chan->writeformat); - if (option_debug) - ast_log(LOG_DEBUG, "Set channel %s to write format %s\n", chan->name, ast_getformatname(chan->writeformat)); + *format = fmt; + /* Free any read translation we have right now */ + if (*trans) + ast_translator_free_path(*trans); + /* Build a translation path from the raw format to the desired format */ + if (!direction) + /* reading */ + *trans = ast_translator_build_path(*format, *rawformat); + else + /* writing */ + *trans = ast_translator_build_path(*rawformat, *format); ast_mutex_unlock(&chan->lock); + if (option_debug) + ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, + direction ? "write" : "read", ast_getformatname(fmt)); return 0; } -int ast_set_read_format(struct ast_channel *chan, int fmts) +int ast_set_read_format(struct ast_channel *chan, int fmt) { - int fmt; - int native; - int res; - - ast_mutex_lock(&chan->lock); - native = chan->nativeformats; - fmt = fmts; - /* Find a translation path from the native read format to one of the user's read formats */ - res = ast_translator_best_choice(&fmt, &native); - if (res < 0) { - ast_log(LOG_NOTICE, "Unable to find a path from %s to %s\n", - ast_getformatname(chan->nativeformats), ast_getformatname(fmts)); - ast_mutex_unlock(&chan->lock); - return -1; - } - - /* Now we have a good choice for both. We'll write using our native format. */ - chan->rawreadformat = native; - /* User perspective is fmt */ - chan->readformat = fmt; - /* Free any read translation we have right now */ - if (chan->readtrans) - ast_translator_free_path(chan->readtrans); - /* Build a translation path from the raw read format to the user reading format */ - chan->readtrans = ast_translator_build_path(chan->readformat, chan->rawreadformat); - if (option_debug) - ast_log(LOG_DEBUG, "Set channel %s to read format %s\n", - chan->name, ast_getformatname(chan->readformat)); - ast_mutex_unlock(&chan->lock); - return 0; + return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, + &chan->readtrans, 0); +} + +int ast_set_write_format(struct ast_channel *chan, int fmt) +{ + return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, + &chan->writetrans, 1); } struct ast_channel *__ast_request_and_dial(const char *type, int format, void *data, int timeout, int *outstate, const char *cid_num, const char *cid_name, struct outgoing_helper *oh) @@ -2257,47 +2245,51 @@ int ast_channel_make_compatible(struct ast_channel *chan, struct ast_channel *pe int peerf; int chanf; int res; - ast_mutex_lock(&peer->lock); + + /* Set up translation from the chan to the peer */ peerf = peer->nativeformats; - ast_mutex_unlock(&peer->lock); - ast_mutex_lock(&chan->lock); chanf = chan->nativeformats; - ast_mutex_unlock(&chan->lock); res = ast_translator_best_choice(&peerf, &chanf); if (res < 0) { - ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, chan->nativeformats, peer->name, peer->nativeformats); + ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, chanf, peer->name, peerf); return -1; } - /* Set read format on channel */ + /* if desired, force all transcode paths to use SLINEAR between channels */ + if (option_transcode_slin) + peerf = AST_FORMAT_SLINEAR; + /* Set read format on chan */ res = ast_set_read_format(chan, peerf); if (res < 0) { ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, chanf); return -1; } - /* Set write format on peer channel */ + /* Set write format on peer */ res = ast_set_write_format(peer, peerf); if (res < 0) { ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, peerf); return -1; } - /* Now we go the other way */ + /* Now we go the other way (peer to chan) */ peerf = peer->nativeformats; chanf = chan->nativeformats; res = ast_translator_best_choice(&chanf, &peerf); if (res < 0) { - ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, peer->nativeformats, chan->name, chan->nativeformats); + ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, peerf, chan->name, chanf); return -1; } - /* Set writeformat on channel */ - res = ast_set_write_format(chan, chanf); + /* if desired, force all transcode paths to use SLINEAR between channels */ + if (option_transcode_slin) + chanf = AST_FORMAT_SLINEAR; + /* Set read format on peer */ + res = ast_set_read_format(peer, chanf); if (res < 0) { - ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, chanf); + ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, peerf); return -1; } - /* Set read format on peer channel */ - res = ast_set_read_format(peer, chanf); + /* Set write format on chan */ + res = ast_set_write_format(chan, chanf); if (res < 0) { - ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, peerf); + ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, chanf); return -1; } return 0; -- cgit v1.2.3