power: Extend power module definition.

Add member function pointers to the power
module header. The new function pointers are
to enable applications to indicate that
video encoding has started or stopped.

Change-Id: Ic71ec1f4e159673bcb14f7e32b6058da1bce3ba5

1 files changed, 12 insertions, 0 deletions

diff --git a/include/hardware/power.h b/include/hardware/power.h
index 6c55061..39b066c 100644
--- a/include/hardware/power.h
+++ b/include/hardware/power.h
@@ -41,6 +41,7 @@ __BEGIN_DECLS
 typedef enum {
     POWER_HINT_VSYNC = 0x00000001,
     POWER_HINT_INTERACTION = 0x00000002,
+    POWER_HINT_VIDEO_ENCODE = 0x00000003,
 } power_hint_t;
 
 /**
@@ -108,6 +109,17 @@ typedef struct power_module {
      *     and it may be appropriate to raise speeds of CPU, memory bus,
      *     etc.  The data parameter is unused.
      *
+     * POWER_HINT_VIDEO_ENCODE
+     *
+     *     The user just started or stopped recording video. When encode
+     *     begins, large writes to the SD card will be done and this may
+     *     cause CPU frequency to increase. The data parameter is a string
+     *     with semicolon-separated 'key:value' pairs. The most common key is
+     *     'state', which takes 0 or 1 as its value. For instance, To
+     *     indicate that recording is beginning, the string "state:1" would
+     *     need to be used. More keys can be provided depending on the data
+     *     that is to be passed.
+     *
      * A particular platform may choose to ignore any hint.
      *
      * availability: version 0.2