AirPlay volume-control attenuates volume (gain) by up to -30dB: the
-range -30dB:0dB can be rescaled from Low:0 (Low <
-0), or Low:High, using the option
-“-db _Low_” or “-db _Low_:_High_” (Rescaling
-is linear in decibels). The option -taper provides a
-“tapered” AirPlay volume-control profile some users may prefer.
-db (“-db
+Low” or “-db Low:High”), Low must be
+negative. Rescaling is linear in decibels. The option
+-taper provides a “tapered” AirPlay volume-control profile
+some users may prefer.
The -vsync and -async options also allow an optional positive (or
negative) audio-delay adjustment in milliseconds for
fine-tuning : -vsync 20.5 delays audio relative to video by
@@ -1518,14 +1519,14 @@ an AppleTV6,2 with sourceVersion 380.20.1 (an AppleTV 4K 1st gen,
introduced 2017, running tvOS 12.2.1), so it does not seem to matter
what version UxPlay claims to be.
1.68 2023-12-29 Introduced a simpler (default) method for generating -a persistent public key from the server MAC address (which can now be -set with the -m option). (The previous pem-file method is still -available with -key option). New option -reg to maintain a register of -pin-authenticated clients. Corrected volume-control: now inteprets -AirPlay volume range -30dB:0dB as (gain/amplitude) decibel attenuation, -with new option -db low[:high] for “flat” rescaling of the dB range. Add --taper option for a “tapered” AirPlay volume-control profile.
+1.68 2023-12-31 New simpler (default) method for generating a +persistent public key from the server MAC address (which can now be set +with the -m option). (The previous method is still available with -key +option). New option -reg to maintain a register of pin-authenticated +clients. Corrected volume-control: now interprets AirPlay volume range +-30dB:0dB as decibel gain attenuation, with new option -db low[:high] +for “flat” rescaling of the dB range. Add -taper option for a “tapered” +AirPlay volume-control profile.
1.67 2023-11-30 Add support for Apple-style one-time pin authentication of clients with option “-pin”: (uses SRP6a authentication protocol and public key persistence). Detection with error message of diff --git a/README.md b/README.md index b7530ea..e674cbc 100644 --- a/README.md +++ b/README.md @@ -415,8 +415,8 @@ if you want to follow the Apple Music lyrics on the client while listening to su delays the video on the client to match audio on the server, so leads to a slight delay before a pause or track-change initiated on the client takes effect on the audio played by the server. -AirPlay volume-control attenuates volume (gain) by up to -30dB: the range -30dB:0dB can be rescaled from _Low_:0 (_Low_ < 0), or _Low_:_High_, using the -option "`-db _Low_`" or "``-db _Low_:_High_``" (Rescaling is linear in decibels). The option ```-taper``` provides a "tapered" AirPlay volume-control +AirPlay volume-control attenuates volume (gain) by up to -30dB: the range -30dB:0dB can be rescaled from _Low_:0, or _Low_:_High_, using the +option `-db` ("-db _Low_ " or "-db _Low_:_High_ "), _Low_ must be negative. Rescaling is linear in decibels. The option ```-taper``` provides a "tapered" AirPlay volume-control profile some users may prefer. The -vsync and -async options @@ -1194,10 +1194,10 @@ tvOS 12.2.1), so it does not seem to matter what version UxPlay claims to be. # Changelog -1.68 2023-12-29 Introduced a simpler (default) method for generating a persistent public key from the server MAC - address (which can now be set with the -m option). (The previous pem-file method is still available +1.68 2023-12-31 New simpler (default) method for generating a persistent public key from the server MAC + address (which can now be set with the -m option). (The previous method is still available with -key option). New option -reg to maintain a register of pin-authenticated clients. Corrected - volume-control: now inteprets AirPlay volume range -30dB:0dB as (gain/amplitude) decibel attenuation, + volume-control: now interprets AirPlay volume range -30dB:0dB as decibel gain attenuation, with new option -db low[:high] for "flat" rescaling of the dB range. Add -taper option for a "tapered" AirPlay volume-control profile. diff --git a/README.txt b/README.txt index d1fe26f..c13bf72 100644 --- a/README.txt +++ b/README.txt @@ -511,10 +511,10 @@ helped to prevent this previously when timestamps were not being used.) takes effect on the audio played by the server. AirPlay volume-control attenuates volume (gain) by up to -30dB: the -range -30dB:0dB can be rescaled from *Low*:0 (*Low* \< 0), or -*Low*:*High*, using the option "`-db _Low_`" or "`-db _Low_:_High_`" -(Rescaling is linear in decibels). The option `-taper` provides a -"tapered" AirPlay volume-control profile some users may prefer. +range -30dB:0dB can be rescaled from *Low*:0, or *Low*:*High*, using the +option `-db` ("-db *Low*" or "-db *Low*:*High*"), *Low* must be +negative. Rescaling is linear in decibels. The option `-taper` provides +a "tapered" AirPlay volume-control profile some users may prefer. The -vsync and -async options also allow an optional positive (or negative) audio-delay adjustment in *milliseconds* for fine-tuning : @@ -1556,14 +1556,14 @@ what version UxPlay claims to be. # Changelog -1.68 2023-12-29 Introduced a simpler (default) method for generating a -persistent public key from the server MAC address (which can now be set -with the -m option). (The previous pem-file method is still available -with -key option). New option -reg to maintain a register of -pin-authenticated clients. Corrected volume-control: now inteprets -AirPlay volume range -30dB:0dB as (gain/amplitude) decibel attenuation, -with new option -db low\[:high\] for "flat" rescaling of the dB range. -Add -taper option for a "tapered" AirPlay volume-control profile. +1.68 2023-12-31 New simpler (default) method for generating a persistent +public key from the server MAC address (which can now be set with the -m +option). (The previous method is still available with -key option). New +option -reg to maintain a register of pin-authenticated clients. +Corrected volume-control: now interprets AirPlay volume range -30dB:0dB +as decibel gain attenuation, with new option -db low\[:high\] for "flat" +rescaling of the dB range. Add -taper option for a "tapered" AirPlay +volume-control profile. 1.67 2023-11-30 Add support for Apple-style one-time pin authentication of clients with option "-pin": (uses SRP6a authentication protocol and diff --git a/uxplay.cpp b/uxplay.cpp index 9853d53..e995d1b 100644 --- a/uxplay.cpp +++ b/uxplay.cpp @@ -1044,7 +1044,7 @@ static void parse_arguments (int argc, char *argv[]) { continue; } } - fprintf(stderr, "invalid argument -al %s: must be a decimal time offset in seconds, range [0,10]\n" + fprintf(stderr, "invalid -al %s: value must be a decimal time offset in seconds, range [0,10]\n" "(like 5 or 4.8, which will be converted to a whole number of microseconds)\n", argv[i]); exit(1); } else if (arg == "-pin") { @@ -1118,7 +1118,7 @@ static void parse_arguments (int argc, char *argv[]) { } } if (db_bad) { - fprintf(stderr, "%s %s requires argument \"low\" or \"low:high\" where low < 0 and high > low are decibel gain values\n", argv[i], start); + fprintf(stderr, "invalid %s %s: db value must be \"low\" or \"low:high\", low < 0 and high > low are decibel gains\n", argv[i], start); exit(1); } i++;