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hwcomposer: Specify set() call error behavior.

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Bug: 7308829
Change-Id: Ibab6f0d2929860f02c17d6ffadb326fc0c333c4d
This commit is contained in:
Jamie Gennis
2012-10-08 19:23:56 -07:00
parent 3fb2be64ff
commit c7545189c8
1 changed files with 10 additions and 3 deletions
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13
include/hardware/hwcomposer.h
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@@ -407,13 +407,20 @@ typedef struct hwc_composer_device_1 {
* non-NULL. In HWC 1.2, support for one virtual display is required, and * non-NULL. In HWC 1.2, support for one virtual display is required, and
* no more than one will be used. Future HWC versions might require more. * no more than one will be used. Future HWC versions might require more.
* *
* IMPORTANT NOTE: there is an implicit layer containing opaque black * IMPORTANT NOTE: There is an implicit layer containing opaque black
* pixels behind all the layers in the list. It is the responsibility of * pixels behind all the layers in the list. It is the responsibility of
* the hwcomposer module to make sure black pixels are output (or blended * the hwcomposer module to make sure black pixels are output (or blended
* from). * from).
* *
* returns: 0 on success. An negative error code on error: * IMPORTANT NOTE: In the event of an error this call *MUST* still cause
* HWC_EGL_ERROR: eglGetError() will provide the proper error code * any fences returned in the previous call to set to eventually become
* signaled. The caller may have already issued wait commands on these
* fences, and having set return without causing those fences to signal
* will likely result in a deadlock.
*
* returns: 0 on success. A negative error code on error:
* HWC_EGL_ERROR: eglGetError() will provide the proper error code (only
* allowed prior to HWComposer 1.1)
* Another code for non EGL errors. * Another code for non EGL errors.
*/ */
int (*set)(struct hwc_composer_device_1 *dev, int (*set)(struct hwc_composer_device_1 *dev,