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hal3: Update documentation regarding hardware block operating modes.

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Change-Id: I27987a75cb80c67f7e9ae71c116a26963b25eccb
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Ruben Brunk 2014-03-18 13:39:17 -07:00
parent b52fedf634
commit 2d96c743e6
1 changed files with 27 additions and 0 deletions
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include/hardware/camera3.h
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@ -52,6 +52,7 @@
* S6. Error management
* S7. Key Performance Indicator (KPI) glossary
* S8. Sample Use Cases
* S9. Notes on Controls and Metadata
*/
/**
@ -1139,6 +1140,32 @@
*
*/
/**
* S9. Notes on Controls and Metadata
*
* This section contains notes about the interpretation and usage of various metadata tags.
*
* S9.1 HIGH_QUALITY and FAST modes.
*
* Many camera post-processing blocks may be listed as having HIGH_QUALITY,
* FAST, and OFF operating modes. These blocks will typically also have an
* 'available modes' tag representing which of these operating modes are
* available on a given device. The general policy regarding implementing
* these modes is as follows:
*
* 1. Operating mode controls of hardware blocks that cannot be disabled
* must not list OFF in their corresponding 'available modes' tags.
*
* 2. OFF will always be included in their corresponding 'available modes'
* tag if it is possible to disable that hardware block.
*
* 3. FAST must always be included in the 'available modes' tags for all
* post-processing blocks supported on the device. If a post-processing
* block also has a slower and higher quality operating mode that does
* not meet the framerate requirements for FAST mode, HIGH_QUALITY should
* be included in the 'available modes' tag to represent this operating
* mode.
*/
__BEGIN_DECLS
struct camera3_device;