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bridge_softmix / app_confbridge: Add support for REMB combining.

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This change adds the ability for multiple REMB reports in
bridge_softmix to be combined according to a configured
behavior into a single report. This single report is sent
back to the sender of video, which adjusts the encoding bitrate
to be at or below the bitrate of the report. The available
behaviors are: lowest, highest, and average. Lowest uses the
lowest received bitrate. Highest uses the highest received
bitrate. Average goes through the received bitrates adding
them to the previous average and creates a new average.

Other behaviors can be added in the future and the existing
average one may be adjusted, but this provides the foundation
to do so.

Support for configuring which behavior to use has been
added to app_confbridge.

ASTERISK-27804

Change-Id: I9eafe4e7c1f72d67074a8d6acb26bfcf19322b66
This commit is contained in:
Joshua Colp
2018-04-04 15:12:50 -03:00
parent 3255a286b3
commit 8de3fa2b56
8 changed files with 376 additions and 3 deletions
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7
apps/app_confbridge.c
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@@ -1544,6 +1544,13 @@ static struct confbridge_conference *join_conference_bridge(const char *conferen
ast_bridge_set_sfu_video_mode(conference->bridge);
ast_bridge_set_video_update_discard(conference->bridge, conference->b_profile.video_update_discard);
ast_bridge_set_remb_send_interval(conference->bridge, conference->b_profile.remb_send_interval);
if (ast_test_flag(&conference->b_profile, BRIDGE_OPT_REMB_BEHAVIOR_AVERAGE)) {
ast_brige_set_remb_behavior(conference->bridge, AST_BRIDGE_VIDEO_SFU_REMB_AVERAGE);
} else if (ast_test_flag(&conference->b_profile, BRIDGE_OPT_REMB_BEHAVIOR_LOWEST)) {
ast_brige_set_remb_behavior(conference->bridge, AST_BRIDGE_VIDEO_SFU_REMB_LOWEST);
} else if (ast_test_flag(&conference->b_profile, BRIDGE_OPT_REMB_BEHAVIOR_HIGHEST)) {
ast_brige_set_remb_behavior(conference->bridge, AST_BRIDGE_VIDEO_SFU_REMB_HIGHEST);
}
}
/* Link it into the conference bridges container */