<a href="#static_android.info.supportedHardwareLevel">android.<wbr/>info.<wbr/>supported<wbr/>Hardware<wbr/>Level</a> <code>==</code> FULL devices:</p>
<ul>
<li>MANUAL_<wbr/>SENSOR</li>
+<li>MANUAL_<wbr/>POST_<wbr/>PROCESSING</li>
</ul>
<p>Other capabilities may be available on either FULL or LIMITED
devices,<wbr/> but the app.<wbr/> should query this field to be sure.<wbr/></p>
<td class="entry_details" colspan="5">
<p>The configurations are listed as <code>(format,<wbr/> width,<wbr/> height,<wbr/> input?)</code>
tuples.<wbr/></p>
-<p>All camera devices will support sensor maximum resolution (defined by
-<a href="#static_android.sensor.info.activeArraySize">android.<wbr/>sensor.<wbr/>info.<wbr/>active<wbr/>Array<wbr/>Size</a>) for the JPEG format.<wbr/></p>
<p>For a given use case,<wbr/> the actual maximum supported resolution
may be lower than what is listed here,<wbr/> depending on the destination
Surface for the image data.<wbr/> For example,<wbr/> for recording video,<wbr/>
of sensor maximum resolution for JPEG formats (regardless of hardware
level).<wbr/></p>
<p>(The following is a rewording of the above required table):</p>
-<p>The HAL must include sensor maximum resolution (defined by
-<a href="#static_android.sensor.info.activeArraySize">android.<wbr/>sensor.<wbr/>info.<wbr/>active<wbr/>Array<wbr/>Size</a>).<wbr/></p>
+<p>For JPEG format,<wbr/> the sizes may be restricted by below conditions:</p>
+<ul>
+<li>The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones
+(e.<wbr/>g.<wbr/> 4:3,<wbr/> 16:9,<wbr/> 3:2 etc.<wbr/>).<wbr/> If the sensor maximum resolution
+(defined by <a href="#static_android.sensor.info.activeArraySize">android.<wbr/>sensor.<wbr/>info.<wbr/>active<wbr/>Array<wbr/>Size</a>) has an aspect ratio other than these,<wbr/>
+it does not have to be included in the supported JPEG sizes.<wbr/></li>
+<li>Some hardware JPEG encoders may have pixel boundary alignment requirements,<wbr/> such as
+the dimensions being a multiple of 16.<wbr/></li>
+</ul>
+<p>Therefore,<wbr/> the maximum JPEG size may be smaller than sensor maximum resolution.<wbr/>
+However,<wbr/> the largest JPEG size must be as close as possible to the sensor maximum
+resolution given above constraints.<wbr/> It is required that after aspect ratio adjustments,<wbr/>
+additional size reduction due to other issues must be less than 3% in area.<wbr/> For example,<wbr/>
+if the sensor maximum resolution is 3280x2464,<wbr/> if the maximum JPEG size has aspect
+ratio 4:3,<wbr/> the JPEG encoder alignment requirement is 16,<wbr/> the maximum JPEG size will be
+3264x2448.<wbr/></p>
<p>For FULL capability devices (<code><a href="#static_android.info.supportedHardwareLevel">android.<wbr/>info.<wbr/>supported<wbr/>Hardware<wbr/>Level</a> == FULL</code>),<wbr/>
the HAL must include all YUV_<wbr/>420_<wbr/>888 sizes that have JPEG sizes listed
here as output streams.<wbr/></p>
android.info.supportedHardwareLevel `==` FULL devices:
* MANUAL_SENSOR
+ * MANUAL_POST_PROCESSING
Other capabilities may be available on either FULL or LIMITED
devices, but the app. should query this field to be sure.
The configurations are listed as `(format, width, height, input?)`
tuples.
- All camera devices will support sensor maximum resolution (defined by
- android.sensor.info.activeArraySize) for the JPEG format.
-
For a given use case, the actual maximum supported resolution
may be lower than what is listed here, depending on the destination
Surface for the image data. For example, for recording video,
(The following is a rewording of the above required table):
- The HAL must include sensor maximum resolution (defined by
- android.sensor.info.activeArraySize).
+ For JPEG format, the sizes may be restricted by below conditions:
+
+ * The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones
+ (e.g. 4:3, 16:9, 3:2 etc.). If the sensor maximum resolution
+ (defined by android.sensor.info.activeArraySize) has an aspect ratio other than these,
+ it does not have to be included in the supported JPEG sizes.
+ * Some hardware JPEG encoders may have pixel boundary alignment requirements, such as
+ the dimensions being a multiple of 16.
+
+ Therefore, the maximum JPEG size may be smaller than sensor maximum resolution.
+ However, the largest JPEG size must be as close as possible to the sensor maximum
+ resolution given above constraints. It is required that after aspect ratio adjustments,
+ additional size reduction due to other issues must be less than 3% in area. For example,
+ if the sensor maximum resolution is 3280x2464, if the maximum JPEG size has aspect
+ ratio 4:3, the JPEG encoder alignment requirement is 16, the maximum JPEG size will be
+ 3264x2448.
For FULL capability devices (`android.info.supportedHardwareLevel == FULL`),
the HAL must include all YUV_420_888 sizes that have JPEG sizes listed
OSDN Git Service
