AudioEngine - Revision history

Karellen at 05:10, 4 August 2020

2020-08-04T05:10:32Z

← Older revision		Revision as of 05:10, 4 August 2020
Line 26:		Line 26:
	;<big>{{highlight\|Settings -> System -> Audio output\|bordered=yes}}</big>		;<big>{{highlight\|Settings -> System -> Audio output\|bordered=yes}}</big>

	~~Refer to [[AudioEngine/HOW-TO: Configure audio]] for more detail.~~

	== Supported Audio Formats for Passthrough ==		== Supported Audio Formats for Passthrough ==
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	Click [http://www.testsounds.com/ here] to download various audio system test files		Click [http://www.testsounds.com/ here] to download various audio system test files

	~~== Audio hardware compatibility ==~~
	~~<big>{{See also \| Audio hardware compatibility}}</big>~~

	== History and Team ==		== History and Team ==
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	{{frodo updated}}		{{frodo updated}}

	~~[[Category:Manual]]~~
	[[Category:Audio]]		[[Category:Audio]]
	[[Category:Development]]		[[Category:Development]]

Karellen: Text replacement - "PAPlayer" to "PAPlayer"

2020-07-20T07:28:18Z

Text replacement - "PAPlayer" to "PAPlayer"

← Older revision		Revision as of 07:28, 20 July 2020
Line 11:		Line 11:
	* ''Mixing of all streams including GUI sounds even when transcoding audio''		* ''Mixing of all streams including GUI sounds even when transcoding audio''
	* ''Start-up enumeration of hardware audio devices and their capabilities with log output''		* ''Start-up enumeration of hardware audio devices and their capabilities with log output''
	* ''Bitstreaming support in [[PAPlayer]] (XBMC's music player)''		* ''Bitstreaming support in PAPlayer (XBMC's music player)''
	* ''Upmixing of stereo to full channel layout''		* ''Upmixing of stereo to full channel layout''
	* ''Tighter syncing of A/V streams''		* ''Tighter syncing of A/V streams''

Fritsch: Gapless and Best Match

2017-04-09T11:39:30Z

Gapless and Best Match

← Older revision		Revision as of 11:39, 9 April 2017
Line 198:		Line 198:
	ActiveAE has three build-in profiles: Best Match, Optimized and Fixed.		ActiveAE has three build-in profiles: Best Match, Optimized and Fixed.
	* ''Fixed'' takes care that all audio you will play is play in the very same data format. Your receiver does not need to switch modes.		* ''Fixed'' takes care that all audio you will play is play in the very same data format. Your receiver does not need to switch modes.
	* ''Best Match'' is what previously existed as the "audiophile" mode. Whenever a new video or music playback starts, the audio engine will select the best sink for that stream.		* ''Best Match'' is what previously existed as the "audiophile" mode. Whenever a new video or music playback starts, the audio engine will select the best sink for that stream. By design ''Best Match'' and ''gapless'' playback are not compatible. If you rely on ''gapless'' playback, consider using ''Optimized'' instead.
	* ''Optimized'' is something special, as it tries to reduce the reopening of sinks a lot. One example is live-TV where it switches between 5.1 to 2.0 during commercials. In order to not open the device anew and loosing some (milliseconds of) audio, the 2.0 commercials are played with the already open 5.1 sink by muting the non existent channels.		* ''Optimized'' is something special, as it tries to reduce the reopening of sinks a lot. One example is live-TV where it switches between 5.1 to 2.0 during commercials. In order to not open the device anew and loosing some (milliseconds of) audio, the 2.0 commercials are played with the already open 5.1 sink by muting the non existent channels.
	The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].		The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].

NedBot: Robot: Changing Category:XBMC Manual to Category:Manual; cosmetic changes

2014-11-17T21:16:48Z

Robot: Changing Category:XBMC Manual to Category:Manual; cosmetic changes

← Older revision		Revision as of 21:16, 17 November 2014
Line 5:		Line 5:
	== Features ==		== Features ==
	AudioEngine replaces SDL and brings some of the external dependencies into XBMC, and wraps up all the different media types for mixing, samplerate conversion, format conversion, encoding, upmix, downmix, etc.		AudioEngine replaces SDL and brings some of the external dependencies into XBMC, and wraps up all the different media types for mixing, samplerate conversion, format conversion, encoding, upmix, downmix, etc.
	<br>		<br />
	;Features of AE include:		;Features of AE include:
	* ''Support for DTS-HD MA / Dolby TrueHD Bluray formats''		* ''Support for DTS-HD MA / Dolby TrueHD Bluray formats''
Line 201:		Line 201:
	* ''Optimized'' is something special, as it tries to reduce the reopening of sinks a lot. One example is live-TV where it switches between 5.1 to 2.0 during commercials. In order to not open the device anew and loosing some (milliseconds of) audio, the 2.0 commercials are played with the already open 5.1 sink by muting the non existent channels.		* ''Optimized'' is something special, as it tries to reduce the reopening of sinks a lot. One example is live-TV where it switches between 5.1 to 2.0 during commercials. In order to not open the device anew and loosing some (milliseconds of) audio, the 2.0 commercials are played with the already open 5.1 sink by muting the non existent channels.
	The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].		The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].
			{{frodo updated}}

	[[Category:~~XBMC~~ Manual]]		[[Category:Manual]]
	[[Category:Audio]]		[[Category:Audio]]
	[[Category:Development]]		[[Category:Development]]
	~~{{frodo updated}}~~

NedBot: Robot: Substituting template: Name

2014-06-05T20:28:01Z

Robot: Substituting template: Name

← Older revision		Revision as of 20:28, 5 June 2014
Line 1:		Line 1:
	{{mininav\|[[Development]]{{l2\|[[Audio]] }} }}		{{mininav\|[[Development]]{{l2\|[[Audio]] }} }}

	'''AudioEngine''' or ('''AE''') refers to ~~{{name}}~~'s new audio system.		'''AudioEngine''' or ('''AE''') refers to XBMC's new audio system.

	== Features ==		== Features ==
	AudioEngine replaces SDL and brings some of the external dependencies into ~~{{name}}~~, and wraps up all the different media types for mixing, samplerate conversion, format conversion, encoding, upmix, downmix, etc.		AudioEngine replaces SDL and brings some of the external dependencies into XBMC, and wraps up all the different media types for mixing, samplerate conversion, format conversion, encoding, upmix, downmix, etc.
	<br>		<br>
	;Features of AE include:		;Features of AE include:
Line 11:		Line 11:
	* ''Mixing of all streams including GUI sounds even when transcoding audio''		* ''Mixing of all streams including GUI sounds even when transcoding audio''
	* ''Start-up enumeration of hardware audio devices and their capabilities with log output''		* ''Start-up enumeration of hardware audio devices and their capabilities with log output''
	* ''Bitstreaming support in [[PAPlayer]] (~~{{name}}~~'s music player)''		* ''Bitstreaming support in [[PAPlayer]] (XBMC's music player)''
	* ''Upmixing of stereo to full channel layout''		* ''Upmixing of stereo to full channel layout''
	* ''Tighter syncing of A/V streams''		* ''Tighter syncing of A/V streams''
Line 36:		Line 36:
	!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Codec'''		!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Codec'''
	!colspan="12" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Source'''		!colspan="12" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Source'''
	!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''~~{{name}}~~ Passthrough Setting'''		!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''XBMC Passthrough Setting'''
	\|-		\|-
	!colspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''HD DVD'''		!colspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''HD DVD'''
Line 172:		Line 172:
	=== Why write a new audio subsystem? ===		=== Why write a new audio subsystem? ===

	It's been an accepted fact that the existing audio code was little-touched since the early days of ~~{{name}}~~, and was limited by the 16-bit architecture of the original Xbox and codecs available at the time. Dolby AC3 and mp3 (or earlier formats!) ruled the media codec world. Over time HTPC's became more mainstream, more powerful and better connected. Analog connections gave way to optical SPDIF connections, which in turn were replaced with HDMI. Processors, GPU's and media formats evolved at a steady pace.		It's been an accepted fact that the existing audio code was little-touched since the early days of XBMC, and was limited by the 16-bit architecture of the original Xbox and codecs available at the time. Dolby AC3 and mp3 (or earlier formats!) ruled the media codec world. Over time HTPC's became more mainstream, more powerful and better connected. Analog connections gave way to optical SPDIF connections, which in turn were replaced with HDMI. Processors, GPU's and media formats evolved at a steady pace.

	With the growth of the HTPC and new formats like those made available with Bluray technology, the audio subsystem was under scrutiny as an area for improvement. Higher definition audio like multichannel FLAC was becoming a preferred standard for those demanding higher quality audio media. It was time for an update, and what an update!		With the growth of the HTPC and new formats like those made available with Bluray technology, the audio subsystem was under scrutiny as an area for improvement. Higher definition audio like multichannel FLAC was becoming a preferred standard for those demanding higher quality audio media. It was time for an update, and what an update!

	Early efforts at patching fixes and even an initial attempt at a completely new system fell by the wayside. The scope of the required changes and the complexity of the API made it a daunting task, especially for volunteer programmers working in their spare time. This was compounded by the fact that ~~{{name}}~~ runs on a wide range of hardware and operating systems. Most of the developers focus on specific platforms or subsystems within the whole of ~~{{name}}~~. Any new system had to be platform-agnostic, cohesive and flexible.		Early efforts at patching fixes and even an initial attempt at a completely new system fell by the wayside. The scope of the required changes and the complexity of the API made it a daunting task, especially for volunteer programmers working in their spare time. This was compounded by the fact that XBMC runs on a wide range of hardware and operating systems. Most of the developers focus on specific platforms or subsystems within the whole of XBMC. Any new system had to be platform-agnostic, cohesive and flexible.

	In time, it became obvious the project was going to require a full re-write and replacement of the audio engine. Furthermore, ~~{{name}}~~'s base of hardware and OS platforms continued to grow. The detailed specifications for the new audio formats were unknown, and of course the master code for ~~{{name}}~~ was ever-changing.		In time, it became obvious the project was going to require a full re-write and replacement of the audio engine. Furthermore, XBMC's base of hardware and OS platforms continued to grow. The detailed specifications for the new audio formats were unknown, and of course the master code for XBMC was ever-changing.

	=== Three years of work ===		=== Three years of work ===
Line 187:		Line 187:
	There was a goal to have the new audio system ready for Eden 11.0, but there was just too much left to do. Many users were eagerly looking forward to it's inclusion, but stable releases must continue, and AE wasn't ready when the Eden feature-freeze went into effect. During this time the AE code-base was solidified, bugs tracked and squashed, features added and testing increased.		There was a goal to have the new audio system ready for Eden 11.0, but there was just too much left to do. Many users were eagerly looking forward to it's inclusion, but stable releases must continue, and AE wasn't ready when the Eden feature-freeze went into effect. During this time the AE code-base was solidified, bugs tracked and squashed, features added and testing increased.

	Finally, on May 15th 2012, AudioEngine was merged to master. Weighing in at over 22,000 lines of code, it represents one of the single biggest code-merges ever for ~~{{name}}~~. Now for the first time it is readily accessible for all the development team (and users!) to see, test and improve within the greater context of ~~{{name}}~~'s master branch.		Finally, on May 15th 2012, AudioEngine was merged to master. Weighing in at over 22,000 lines of code, it represents one of the single biggest code-merges ever for XBMC. Now for the first time it is readily accessible for all the development team (and users!) to see, test and improve within the greater context of XBMC's master branch.

	=== ActiveAE ===		=== ActiveAE ===
Line 194:		Line 194:

	A new feature is the upmix via AC3 transcoding support. On optical devices where only 2 pcm channels are available, we can now upmix to 5.1 by transcoding to ac3.		A new feature is the upmix via AC3 transcoding support. On optical devices where only 2 pcm channels are available, we can now upmix to 5.1 by transcoding to ac3.
	Another new feature is the PulseAudio sink for ActiveAE, which was merged into ~~{{name}}~~ mainline on January 9th 2014 and enables Linux desktop users to use the PulseAudio system instead of ALSA, which was an often requested feature. See [[PulseAudio]]		Another new feature is the PulseAudio sink for ActiveAE, which was merged into XBMC mainline on January 9th 2014 and enables Linux desktop users to use the PulseAudio system instead of ALSA, which was an often requested feature. See [[PulseAudio]]

	ActiveAE has three build-in profiles: Best Match, Optimized and Fixed.		ActiveAE has three build-in profiles: Best Match, Optimized and Fixed.
Line 202:		Line 202:
	The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].		The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].

	[[Category:~~{{name}}~~ Manual]]		[[Category:XBMC Manual]]
	[[Category:Audio]]		[[Category:Audio]]
	[[Category:Development]]		[[Category:Development]]
	{{frodo updated}}		{{frodo updated}}

NedBot: Bot: Automated text replacement (-XBMC +{{name}})

2014-06-05T00:58:20Z

Bot: Automated text replacement (-XBMC +{{name}})

← Older revision		Revision as of 00:58, 5 June 2014
Line 1:		Line 1:
	{{mininav\|[[Development]]{{l2\|[[Audio]] }} }}		{{mininav\|[[Development]]{{l2\|[[Audio]] }} }}

	'''AudioEngine''' or ('''AE''') refers to ~~XBMC~~'s new audio system.		'''AudioEngine''' or ('''AE''') refers to {{name}}'s new audio system.

	== Features ==		== Features ==
	AudioEngine replaces SDL and brings some of the external dependencies into ~~XBMC~~, and wraps up all the different media types for mixing, samplerate conversion, format conversion, encoding, upmix, downmix, etc.		AudioEngine replaces SDL and brings some of the external dependencies into {{name}}, and wraps up all the different media types for mixing, samplerate conversion, format conversion, encoding, upmix, downmix, etc.
	<br>		<br>
	;Features of AE include:		;Features of AE include:
Line 11:		Line 11:
	* ''Mixing of all streams including GUI sounds even when transcoding audio''		* ''Mixing of all streams including GUI sounds even when transcoding audio''
	* ''Start-up enumeration of hardware audio devices and their capabilities with log output''		* ''Start-up enumeration of hardware audio devices and their capabilities with log output''
	* ''Bitstreaming support in [[PAPlayer]] (~~XBMC~~'s music player)''		* ''Bitstreaming support in [[PAPlayer]] ({{name}}'s music player)''
	* ''Upmixing of stereo to full channel layout''		* ''Upmixing of stereo to full channel layout''
	* ''Tighter syncing of A/V streams''		* ''Tighter syncing of A/V streams''
Line 36:		Line 36:
	!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Codec'''		!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Codec'''
	!colspan="12" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Source'''		!colspan="12" style="color:#000000; background-color:#DBDBDB;" \| '''Audio Source'''
	!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''~~XBMC~~ Passthrough Setting'''		!rowspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''{{name}} Passthrough Setting'''
	\|-		\|-
	!colspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''HD DVD'''		!colspan="3" style="color:#000000; background-color:#DBDBDB;" \| '''HD DVD'''
Line 172:		Line 172:
	=== Why write a new audio subsystem? ===		=== Why write a new audio subsystem? ===

	It's been an accepted fact that the existing audio code was little-touched since the early days of ~~XBMC~~, and was limited by the 16-bit architecture of the original Xbox and codecs available at the time. Dolby AC3 and mp3 (or earlier formats!) ruled the media codec world. Over time HTPC's became more mainstream, more powerful and better connected. Analog connections gave way to optical SPDIF connections, which in turn were replaced with HDMI. Processors, GPU's and media formats evolved at a steady pace.		It's been an accepted fact that the existing audio code was little-touched since the early days of {{name}}, and was limited by the 16-bit architecture of the original Xbox and codecs available at the time. Dolby AC3 and mp3 (or earlier formats!) ruled the media codec world. Over time HTPC's became more mainstream, more powerful and better connected. Analog connections gave way to optical SPDIF connections, which in turn were replaced with HDMI. Processors, GPU's and media formats evolved at a steady pace.

	With the growth of the HTPC and new formats like those made available with Bluray technology, the audio subsystem was under scrutiny as an area for improvement. Higher definition audio like multichannel FLAC was becoming a preferred standard for those demanding higher quality audio media. It was time for an update, and what an update!		With the growth of the HTPC and new formats like those made available with Bluray technology, the audio subsystem was under scrutiny as an area for improvement. Higher definition audio like multichannel FLAC was becoming a preferred standard for those demanding higher quality audio media. It was time for an update, and what an update!

	Early efforts at patching fixes and even an initial attempt at a completely new system fell by the wayside. The scope of the required changes and the complexity of the API made it a daunting task, especially for volunteer programmers working in their spare time. This was compounded by the fact that ~~XBMC~~ runs on a wide range of hardware and operating systems. Most of the developers focus on specific platforms or subsystems within the whole of ~~XBMC~~. Any new system had to be platform-agnostic, cohesive and flexible.		Early efforts at patching fixes and even an initial attempt at a completely new system fell by the wayside. The scope of the required changes and the complexity of the API made it a daunting task, especially for volunteer programmers working in their spare time. This was compounded by the fact that {{name}} runs on a wide range of hardware and operating systems. Most of the developers focus on specific platforms or subsystems within the whole of {{name}}. Any new system had to be platform-agnostic, cohesive and flexible.

	In time, it became obvious the project was going to require a full re-write and replacement of the audio engine. Furthermore, ~~XBMC~~'s base of hardware and OS platforms continued to grow. The detailed specifications for the new audio formats were unknown, and of course the master code for ~~XBMC~~ was ever-changing.		In time, it became obvious the project was going to require a full re-write and replacement of the audio engine. Furthermore, {{name}}'s base of hardware and OS platforms continued to grow. The detailed specifications for the new audio formats were unknown, and of course the master code for {{name}} was ever-changing.

	=== Three years of work ===		=== Three years of work ===
Line 187:		Line 187:
	There was a goal to have the new audio system ready for Eden 11.0, but there was just too much left to do. Many users were eagerly looking forward to it's inclusion, but stable releases must continue, and AE wasn't ready when the Eden feature-freeze went into effect. During this time the AE code-base was solidified, bugs tracked and squashed, features added and testing increased.		There was a goal to have the new audio system ready for Eden 11.0, but there was just too much left to do. Many users were eagerly looking forward to it's inclusion, but stable releases must continue, and AE wasn't ready when the Eden feature-freeze went into effect. During this time the AE code-base was solidified, bugs tracked and squashed, features added and testing increased.

	Finally, on May 15th 2012, AudioEngine was merged to master. Weighing in at over 22,000 lines of code, it represents one of the single biggest code-merges ever for ~~XBMC~~. Now for the first time it is readily accessible for all the development team (and users!) to see, test and improve within the greater context of ~~XBMC~~'s master branch.		Finally, on May 15th 2012, AudioEngine was merged to master. Weighing in at over 22,000 lines of code, it represents one of the single biggest code-merges ever for {{name}}. Now for the first time it is readily accessible for all the development team (and users!) to see, test and improve within the greater context of {{name}}'s master branch.

	=== ActiveAE ===		=== ActiveAE ===
Line 194:		Line 194:

	A new feature is the upmix via AC3 transcoding support. On optical devices where only 2 pcm channels are available, we can now upmix to 5.1 by transcoding to ac3.		A new feature is the upmix via AC3 transcoding support. On optical devices where only 2 pcm channels are available, we can now upmix to 5.1 by transcoding to ac3.
	Another new feature is the PulseAudio sink for ActiveAE, which was merged into ~~XBMC~~ mainline on January 9th 2014 and enables Linux desktop users to use the PulseAudio system instead of ALSA, which was an often requested feature. See [[PulseAudio]]		Another new feature is the PulseAudio sink for ActiveAE, which was merged into {{name}} mainline on January 9th 2014 and enables Linux desktop users to use the PulseAudio system instead of ALSA, which was an often requested feature. See [[PulseAudio]]

	ActiveAE has three build-in profiles: Best Match, Optimized and Fixed.		ActiveAE has three build-in profiles: Best Match, Optimized and Fixed.
Line 202:		Line 202:
	The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].		The main developers of ActiveAE are [[User:Fernetmenta\|Fernetmenta]] and [[User:Fritsch\|Fritsch]].

	[[Category:~~XBMC~~ Manual]]		[[Category:{{name}} Manual]]
	[[Category:Audio]]		[[Category:Audio]]
	[[Category:Development]]		[[Category:Development]]
	{{frodo updated}}		{{frodo updated}}

Ned Scott at 13:32, 1 May 2014

2014-05-01T13:32:24Z

← Older revision		Revision as of 13:32, 1 May 2014
Line 205:		Line 205:
	[[Category:Audio]]		[[Category:Audio]]
	[[Category:Development]]		[[Category:Development]]
	~~[[Category:Advanced topics]]~~
	{{frodo updated}}		{{frodo updated}}

UNiversal: /* Test audio files */ add a few more test files sources and types.

2014-04-22T14:10:46Z

Test audio files: add a few more test files sources and types.

← Older revision		Revision as of 14:10, 22 April 2014
Line 158:		Line 158:
	Below You can find a excellent range of flac test audio files stereo/multichannel and varied sample/bit rates and quality.		Below You can find a excellent range of flac test audio files stereo/multichannel and varied sample/bit rates and quality.

	Click [http://www.2l.no/hires/ here to] to download ~~flac~~ test files		Click [http://www.2l.no/hires/ here] to download flac test files

			Click [http://download.wavetlan.com/SVV/Media/HTTP/http-wma.html here] to download wma test files

			Click [http://www.testsounds.com/ here] to download various audio system test files

	== Audio hardware compatibility ==		== Audio hardware compatibility ==

UNiversal: /* Hardware capabilities and reported to work */

2014-03-23T12:23:04Z

Hardware capabilities and reported to work

Show changes

Ned Scott at 00:54, 22 March 2014

2014-03-22T00:54:58Z

← Older revision		Revision as of 00:54, 22 March 2014
Line 1:		Line 1:
	{{mininav\|[[Development]]}}~~{{frodo updated~~}}		{{mininav\|[[Development]]{{l2\|[[Audio]] }} }}

	'''AudioEngine''' or ('''AE''') refers to XBMC's new audio system.		'''AudioEngine''' or ('''AE''') refers to XBMC's new audio system.
Line 650:		Line 650:
	[[Category:Development]]		[[Category:Development]]
	[[Category:Advanced topics]]		[[Category:Advanced topics]]
			{{frodo updated}}