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channel.c: Allow generic plc then channel formats are equal

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If the two formats on a channel are equal, we don't transcode and since
the generic plc needs slin to work, it doesn't get invoked.

* A new configuration option "genericplc_on_equal_codecs" was added
  to the "plc" section of codecs.conf to allow generic packet loss
  concealment even if no transcoding was originally needed.
  Transcoding via SLIN is forced in this case.

ASTERISK-27743

Change-Id: I0577026a179dea34232e63123254b4e0508378f4
This commit is contained in:
George Joseph
2018-03-16 09:19:11 -06:00
parent 5843a19797
commit 5d097f8236
6 changed files with 35 additions and 4 deletions
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3
include/asterisk/options.h
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@@ -98,6 +98,8 @@ enum ast_option_flags {
AST_OPT_FLAG_LOCK_CONFIG_DIR = (1 << 29),
/*! Generic PLC */
AST_OPT_FLAG_GENERIC_PLC = (1 << 30),
/*! Generic PLC onm equal codecs */
AST_OPT_FLAG_GENERIC_PLC_ON_EQUAL_CODECS = (1 << 31),
};
/*! These are the options that set by default when Asterisk starts */
@@ -134,6 +136,7 @@ enum ast_option_flags {
#define ast_opt_lock_confdir ast_test_flag(&ast_options, AST_OPT_FLAG_LOCK_CONFIG_DIR)
#define ast_opt_generic_plc ast_test_flag(&ast_options, AST_OPT_FLAG_GENERIC_PLC)
#define ast_opt_ref_debug ast_test_flag(&ast_options, AST_OPT_FLAG_REF_DEBUG)
#define ast_opt_generic_plc_on_equal_codecs ast_test_flag(&ast_options, AST_OPT_FLAG_GENERIC_PLC_ON_EQUAL_CODECS)
/*! Maximum log level defined by PJPROJECT. */
#define MAX_PJ_LOG_MAX_LEVEL 6