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| author | Mathias Agopian <mathias@google.com> | 2012-04-10 21:22:28 -0700 |
|---|---|---|
| committer | Mathias Agopian <mathias@google.com> | 2012-04-10 21:22:28 -0700 |
| commit | 6d3fec70d86fe8e8fb71b233d2de727fee3f6f3f (patch) | |
| tree | a08add374667c793b661200e4aa2badbb4df182a /include/hardware/hwcomposer.h | |
| parent | c65a2fe3925f46b4d4301cef97b308dbc3e22da9 (diff) | |
| download | hardware_libhardware-6d3fec70d86fe8e8fb71b233d2de727fee3f6f3f.zip hardware_libhardware-6d3fec70d86fe8e8fb71b233d2de727fee3f6f3f.tar.gz hardware_libhardware-6d3fec70d86fe8e8fb71b233d2de727fee3f6f3f.tar.bz2 | |
improve hwc VSYNC documentation
Change-Id: I5820d8fa183701ebbc0a825cf27bd0004b47d62e
Diffstat (limited to 'include/hardware/hwcomposer.h')
| -rw-r--r-- | include/hardware/hwcomposer.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h index 7f55784..827cea1 100644 --- a/include/hardware/hwcomposer.h +++ b/include/hardware/hwcomposer.h @@ -331,6 +331,11 @@ typedef struct hwc_procs { * ANDROID_URGENT_DISPLAY_PRIORITY with as little latency as possible, * typically less than 0.5 ms. * + * It is a (silent) error to have HWC_EVENT_VSYNC enabled when calling + * hwc_composer_device.set(..., 0, 0, 0) (screen off). The implementation + * can either stop or continue to process VSYNC events, but must not + * crash or cause other problems. + * */ void (*vsync)(struct hwc_procs* procs, int zero, int64_t timestamp); } hwc_procs_t; |