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49 lines
1.6 KiB
49 lines
1.6 KiB
6 years ago
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#ifndef FRAMEBUFFER_H
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#define FRAMEBUFFER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct FramebufferState FramebufferState;
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FramebufferState* framebuffer_init(
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const char* name, int32_t layer, int alpha,
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int *out_w, int *out_h);
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void framebuffer_set_power(FramebufferState *s, int mode);
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void framebuffer_swap(FramebufferState *s);
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/* Display power modes */
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enum {
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/* The display is turned off (blanked). */
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HWC_POWER_MODE_OFF = 0,
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/* The display is turned on and configured in a low power state
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* that is suitable for presenting ambient information to the user,
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* possibly with lower fidelity than normal but greater efficiency. */
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HWC_POWER_MODE_DOZE = 1,
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/* The display is turned on normally. */
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HWC_POWER_MODE_NORMAL = 2,
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/* The display is configured as in HWC_POWER_MODE_DOZE but may
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* stop applying frame buffer updates from the graphics subsystem.
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* This power mode is effectively a hint from the doze dream to
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* tell the hardware that it is done drawing to the display for the
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* time being and that the display should remain on in a low power
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* state and continue showing its current contents indefinitely
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* until the mode changes.
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*
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* This mode may also be used as a signal to enable hardware-based doze
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* functionality. In this case, the doze dream is effectively
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* indicating that the hardware is free to take over the display
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* and manage it autonomously to implement low power always-on display
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* functionality. */
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HWC_POWER_MODE_DOZE_SUSPEND = 3,
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};
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#ifdef __cplusplus
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}
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#endif
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#endif
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