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/*
* See the README file for copyright information and how to reach the author.
*
* $Id$
*/
#include "display.h"
#include "tools.h"
#include <vdr/tools.h>
#include "interface/vmcs_host/vc_dispmanx.h"
#define ALIGN_UP(value, align) (((value) & (align-1)) ? \
(((value) + (align-1)) & ~(align-1)) : (value))
DISPMANX_DISPLAY_HANDLE_T cRpiDisplay::s_display = 0;
DISPMANX_UPDATE_HANDLE_T cRpiDisplay::s_update = 0;
int cRpiDisplay::Open(int device)
{
s_display = vc_dispmanx_display_open(device);
if (!s_display)
{
ELOG("failed to open display!");
return -1;
}
s_update = vc_dispmanx_update_start(0);
if (s_update == DISPMANX_NO_HANDLE)
{
ELOG("failed to start display update!");
Close();
return -1;
}
return 0;
}
void cRpiDisplay::Close(void)
{
if (s_display)
vc_dispmanx_display_close(s_display);
s_display = 0;
}
int cRpiDisplay::GetSize(int &width, int &height)
{
if (!s_display)
return -1;
DISPMANX_MODEINFO_T info;
memset(&info, 0, sizeof(info));
if (vc_dispmanx_display_get_info(s_display, &info))
{
ELOG("failed to get display info!");
return -1;
}
width = info.width;
height = info.height;
return 0;
}
int cRpiDisplay::AddElement(DISPMANX_ELEMENT_HANDLE_T &element,
int width, int height, int layer)
{
if (!s_display)
return -1;
VC_RECT_T dstRect = { 0, 0, width, height };
VC_RECT_T srcRect = { 0, 0, width << 16, height << 16 };
element = vc_dispmanx_element_add(s_update, s_display, layer, &dstRect, 0,
&srcRect, DISPMANX_PROTECTION_NONE, 0, 0, (DISPMANX_TRANSFORM_T)0);
if (!element)
{
ELOG("failed to add display element!");
return -1;
}
vc_dispmanx_update_submit_sync(s_update);
return 0;
}
int cRpiDisplay::Snapshot(uint8_t* frame, int width, int height)
{
if (!s_display)
return -1;
uint32_t image;
DISPMANX_RESOURCE_HANDLE_T res = vc_dispmanx_resource_create(
VC_IMAGE_RGB888, width, height, &image);
vc_dispmanx_snapshot(s_display, res,
(DISPMANX_TRANSFORM_T)(DISPMANX_SNAPSHOT_PACK));
VC_RECT_T rect = { 0, 0, width, height };
vc_dispmanx_resource_read_data(res, &rect, frame, width * 3);
vc_dispmanx_resource_delete(res);
return 0;
}
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