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September 6, 2012 21:42
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Dispmanx max element test
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/* | |
Copyright (c) 2012, Broadcom Europe Ltd | |
All rights reserved. | |
Redistribution and use in source and binary forms, with or without | |
modification, are permitted provided that the following conditions are met: | |
* Redistributions of source code must retain the above copyright | |
notice, this list of conditions and the following disclaimer. | |
* Redistributions in binary form must reproduce the above copyright | |
notice, this list of conditions and the following disclaimer in the | |
documentation and/or other materials provided with the distribution. | |
* Neither the name of the copyright holder nor the | |
names of its contributors may be used to endorse or promote products | |
derived from this software without specific prior written permission. | |
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY | |
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
// A simple demo using dispmanx to display an overlay | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <stdarg.h> | |
#include <assert.h> | |
#include <unistd.h> | |
#include <sys/time.h> | |
#include "bcm_host.h" | |
#define ELEMENT_CHANGE_LAYER (1<<0) | |
#define ELEMENT_CHANGE_OPACITY (1<<1) | |
#define ELEMENT_CHANGE_DEST_RECT (1<<2) | |
#define ELEMENT_CHANGE_SRC_RECT (1<<3) | |
#define ELEMENT_CHANGE_MASK_RESOURCE (1<<4) | |
#define ELEMENT_CHANGE_TRANSFORM (1<<5) | |
#define WIDTH 50 | |
#define HEIGHT 50 | |
#define ALIGN_UP(x,y) ((x + (y)-1) & ~((y)-1)) | |
#define MAX_LAYERS (500) | |
typedef struct | |
{ | |
DISPMANX_DISPLAY_HANDLE_T display; | |
DISPMANX_MODEINFO_T info; | |
void *image; | |
DISPMANX_UPDATE_HANDLE_T update; | |
DISPMANX_RESOURCE_HANDLE_T resource; | |
DISPMANX_ELEMENT_HANDLE_T element2[MAX_LAYERS]; | |
uint32_t vc_image_ptr; | |
} RECT_VARS_T; | |
static RECT_VARS_T gRectVars; | |
static void FillRect( VC_IMAGE_TYPE_T type, void *image, int pitch, int aligned_height, int x, int y, int w, int h, int val ) | |
{ | |
int row; | |
int col; | |
uint16_t *line = (uint16_t *)image + y * (pitch>>1) + x; | |
for ( row = 0; row < h; row++ ) | |
{ | |
for ( col = 0; col < w; col++ ) | |
{ | |
line[col] = val; | |
} | |
line += (pitch>>1); | |
} | |
} | |
int main(void) | |
{ | |
RECT_VARS_T *vars; | |
uint32_t screen = 0; | |
int ret; | |
VC_RECT_T src_rect; | |
VC_RECT_T dst_rect; | |
VC_IMAGE_TYPE_T type = VC_IMAGE_RGB565; | |
int width = WIDTH, height = HEIGHT; | |
int pitch = ALIGN_UP(width*2, 32); | |
int aligned_height = ALIGN_UP(height, 16); | |
VC_DISPMANX_ALPHA_T alpha = { /*DISPMANX_FLAGS_ALPHA_FROM_SOURCE |*/ DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS, 255, /*alpha 0->255*/ 0 }; | |
vars = &gRectVars; | |
bcm_host_init(); | |
printf("Open display[%i]...\n", screen ); | |
vars->display = vc_dispmanx_display_open( screen ); | |
ret = vc_dispmanx_display_get_info( vars->display, &vars->info); | |
assert(ret == 0); | |
printf( "Display is %d x %d\n", vars->info.width, vars->info.height ); | |
vars->image = calloc( 1, pitch * height ); | |
assert(vars->image); | |
FillRect( type, vars->image, pitch, aligned_height, 0, 0, width, height, 0xF800 ); | |
FillRect( type, vars->image, pitch, aligned_height, 20, 20, width - 40, height - 40, 0x07E0 ); | |
//FillRect( type, vars->image, pitch, aligned_height, 40, 40, width - 80, height - 80, 0x001F ); | |
vars->vc_image_ptr = 0xff; | |
vars->resource = vc_dispmanx_resource_create( type, width, height, &vars->vc_image_ptr ); | |
assert( vars->resource ); | |
vc_dispmanx_rect_set( &dst_rect, 0, 0, width, height); | |
ret = vc_dispmanx_resource_write_data( vars->resource, type, pitch, vars->image, &dst_rect ); | |
assert( ret == 0 ); | |
vars->update = vc_dispmanx_update_start( 10 ); | |
assert( vars->update ); | |
vc_dispmanx_rect_set( &src_rect, 0, 0, width << 16, height << 16 ); | |
vc_dispmanx_rect_set( &dst_rect, 0,0, width, height ); | |
int i; | |
int w = WIDTH+10; | |
int h = HEIGHT+10; | |
printf("Elements:\n"); | |
for (i=0; i<MAX_LAYERS; i++){ | |
dst_rect.x = (i / (1080/w)) * w; | |
dst_rect.y = (i % (1080/w)) * h; | |
vars->element2[i] = vc_dispmanx_element_add( vars->update, vars->display, 1000+i/*layer*/, &dst_rect, vars->resource, &src_rect, DISPMANX_PROTECTION_NONE, &alpha, NULL/*clamp*/, VC_IMAGE_ROT0 ); | |
printf("%s%x", i?", ":"", vars->element2[i]); | |
assert(vars->element2[i] != -1); | |
} | |
printf("\n"); | |
ret = vc_dispmanx_update_submit_sync( vars->update ); | |
assert( ret == 0 ); | |
printf( "Press enter key to quit...\n" ); | |
getchar(); | |
vars->update = vc_dispmanx_update_start( 10 ); | |
for (i=0; i<MAX_LAYERS; i++) | |
{ | |
ret = vc_dispmanx_element_remove( vars->update, vars->element2[i] ); | |
assert( ret == 0 ); | |
} | |
assert( vars->update ); | |
ret = vc_dispmanx_update_submit_sync( vars->update ); | |
assert( ret == 0 ); | |
ret = vc_dispmanx_resource_delete( vars->resource ); | |
assert( ret == 0 ); | |
ret = vc_dispmanx_display_close( vars->display ); | |
assert( ret == 0 ); | |
return 0; | |
} |
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