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add new channel option (via ast_channel_setoption()) to let channel drivers adjust txgain/rxgain if they are able (only Zap channels at this time)

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modify app_chanspy to use new gain option
reformat app_chanspy to match coding guidelines
add user-controlled volume adjustment to app_meetme (issue #4170, heavily modified to actually work on Zap channels)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6519 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2005-09-07 01:30:01 +00:00
parent 2f67f66577
commit 5fdc070109
5 changed files with 477 additions and 222 deletions
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16
include/asterisk/frame.h
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@@ -227,6 +227,22 @@ struct ast_frame_chain {
/* Set (or clear) Audio (Not-Clear) Mode */
#define AST_OPTION_AUDIO_MODE 4
/* Set channel transmit gain */
/* Option data is a single signed char
representing number of decibels (dB)
to set gain to (on top of any gain
specified in channel driver)
*/
#define AST_OPTION_TXGAIN 5
/* Set channel receive gain */
/* Option data is a single signed char
representing number of decibels (dB)
to set gain to (on top of any gain
specified in channel driver)
*/
#define AST_OPTION_RXGAIN 6
struct ast_option_header {
/* Always keep in network byte order */
#if __BYTE_ORDER == __BIG_ENDIAN