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graphics: update raw10 to allow padding between rows

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Change-Id: Ied1f42bb977212d9e5f3b2b2b3caa9c8c2caac5d
This commit is contained in:
Zhijun He 2014-07-25 08:07:48 -07:00
parent 5a2552388e
commit c73b73a3c9
1 changed files with 16 additions and 11 deletions
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27
include/system/graphics.h
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@ -202,15 +202,16 @@ enum {
*
* This format is exposed outside of the camera HAL to applications.
*
* RAW10 is a single-channel, 10-bit per pixel, densely packed, unprocessed
* format, representing raw Bayer-pattern images coming from an image sensor.
* RAW10 is a single-channel, 10-bit per pixel, densely packed in each row,
* unprocessed format, usually representing raw Bayer-pattern images coming from
* an image sensor.
*
* In an image buffer with this format, starting from the first pixel, each 4
* consecutive pixels are packed into 5 bytes (40 bits). Each one of the first
* 4 bytes contains the top 8 bits of each pixel, The fifth byte contains the
* 2 least significant bits of the 4 pixels, the exact layout data for each 4
* consecutive pixels is illustrated below (Pi[j] stands for the jth bit of
* the ith pixel):
* In an image buffer with this format, starting from the first pixel of each
* row, each 4 consecutive pixels are packed into 5 bytes (40 bits). Each one
* of the first 4 bytes contains the top 8 bits of each pixel, The fifth byte
* contains the 2 least significant bits of the 4 pixels, the exact layout data
* for each 4 consecutive pixels is illustrated below (Pi[j] stands for the jth
* bit of the ith pixel):
*
* bit 7 bit 0
* =====|=====|=====|=====|=====|=====|=====|=====|
@ -228,11 +229,15 @@ enum {
* This format assumes
* - a width multiple of 4 pixels
* - an even height
* - a horizontal stride equal to the width
* - a vertical stride equal to the height
* - strides are specified in pixels, not in bytes
* - strides are specified in bytes, not in pixels
*
* size = stride * height * 10 / 8
* size = stride * height
*
* When stride is equal to width * (10 / 8), there will be no padding bytes at
* the end of each row, the entire image data is densely packed. When stride is
* larger than width * (10 / 8), padding bytes will be present at the end of each
* row (including the last row).
*
* This format must be accepted by the gralloc module when used with the
* following usage flags: