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dispmanx: Add a host call to trigger callbacks on vsync

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This commit is contained in:
popcornmix
2014-08-20 23:22:22 +01:00
parent f653f6013b
commit 1946b724cb
3 changed files with 34 additions and 0 deletions
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1
interface/peer/vc_vchi_dispmanx_common.h
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@@ -77,6 +77,7 @@ typedef enum {
EDispmanDisplayOrientation,
EDispmanSnapshot,
EDispmanSetPalette,
EDispmanVsyncCallback,
EDispmanMaxFunction
} DISPMANX_COMMAND_T;

3
interface/vmcs_host/vc_dispmanx.h
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@@ -132,6 +132,9 @@ VCHPRE_ int VCHPOST_ vc_dispmanx_snapshot( DISPMANX_DISPLAY_HANDLE_T display,
VCHPRE_ int VCHPOST_ vc_dispmanx_resource_set_palette( DISPMANX_RESOURCE_HANDLE_T handle,
void * src_address, int offset, int size);
// Start triggering callbacks synced to vsync
VCHPRE_ int VCHPOST_ vc_dispmanx_vsync_callback( DISPMANX_DISPLAY_HANDLE_T display, DISPMANX_CALLBACK_FUNC_T cb_func, void *cb_arg );
#ifdef __cplusplus
}
#endif

30
interface/vmcs_host/vc_vchi_dispmanx.c
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@@ -1023,6 +1023,36 @@ VCHPRE_ int VCHPOST_ vc_dispmanx_resource_set_palette( DISPMANX_RESOURCE_HANDLE_
return (int) success;
}
/***********************************************************
* Name: vc_dispmanx_vsync_callback
*
* Arguments:
* DISPMANX_DISPLAY_HANDLE_T display
* DISPMANX_CALLBACK_FUNC_T cb_func
* void *cb_arg
*
* Description: start sending callbacks on vsync events
* Use a NULL cb_func to stop the callbacks
* Returns: 0 or failure
*
***********************************************************/
VCHPRE_ int VCHPOST_ vc_dispmanx_vsync_callback( DISPMANX_DISPLAY_HANDLE_T display, DISPMANX_CALLBACK_FUNC_T cb_func, void *cb_arg )
{
DISPMANX_UPDATE_HANDLE_T update = 0;
uint32_t update_param[] = {(uint32_t) VC_HTOV32(display), VC_HTOV32(update), (uint32_t) ((cb_func) ? VC_HTOV32(1) : 0)};
int success;
//Set the callback
dispmanx_client.update_callback = cb_func;
dispmanx_client.update_callback_param = cb_arg;
dispmanx_client.pending_update_handle = update;
vchi_service_use(dispmanx_client.notify_handle[0]); // corresponding release is in dispmanx_notify_func
success = (int) dispmanx_send_command( EDispmanVsyncCallback | DISPMANX_NO_REPLY_MASK,
update_param, sizeof(update_param));
return (int) success;
}
/*********************************************************************************
*
* Static functions definitions