EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_gui_picture

Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This program decodes decodes and shows two png images.

Dependencies:   EALib mbed

PictureDemo.cpp@0:b567d56a59d7, 2014-10-03 (annotated)

Committer:
embeddedartists
Date:
Fri Oct 03 13:30:09 2014 +0000
Revision:
0:b567d56a59d7
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:b567d56a59d7 1 /******************************************************************************
embeddedartists 0:b567d56a59d7 2 * Includes
embeddedartists 0:b567d56a59d7 3 *****************************************************************************/
embeddedartists 0:b567d56a59d7 4
embeddedartists 0:b567d56a59d7 5 #include "mbed.h"
embeddedartists 0:b567d56a59d7 6
embeddedartists 0:b567d56a59d7 7 #include "LcdController.h"
embeddedartists 0:b567d56a59d7 8 #include "EaLcdBoard.h"
embeddedartists 0:b567d56a59d7 9 #include "PictureDemo.h"
embeddedartists 0:b567d56a59d7 10
embeddedartists 0:b567d56a59d7 11 #include "Image.h"
embeddedartists 0:b567d56a59d7 12
embeddedartists 0:b567d56a59d7 13 extern const unsigned char eaLogo_image[];
embeddedartists 0:b567d56a59d7 14 extern int eaLogo_image_sz;
embeddedartists 0:b567d56a59d7 15
embeddedartists 0:b567d56a59d7 16 extern const unsigned char splash_image[];
embeddedartists 0:b567d56a59d7 17 extern int splash_image_sz;
embeddedartists 0:b567d56a59d7 18
embeddedartists 0:b567d56a59d7 19 /******************************************************************************
embeddedartists 0:b567d56a59d7 20 * Typedefs and defines
embeddedartists 0:b567d56a59d7 21 *****************************************************************************/
embeddedartists 0:b567d56a59d7 22
embeddedartists 0:b567d56a59d7 23 /******************************************************************************
embeddedartists 0:b567d56a59d7 24 * Local variables
embeddedartists 0:b567d56a59d7 25 *****************************************************************************/
embeddedartists 0:b567d56a59d7 26
embeddedartists 0:b567d56a59d7 27 /******************************************************************************
embeddedartists 0:b567d56a59d7 28 * External variables
embeddedartists 0:b567d56a59d7 29 *****************************************************************************/
embeddedartists 0:b567d56a59d7 30
embeddedartists 0:b567d56a59d7 31
embeddedartists 0:b567d56a59d7 32 /******************************************************************************
embeddedartists 0:b567d56a59d7 33 * Local functions
embeddedartists 0:b567d56a59d7 34 *****************************************************************************/
embeddedartists 0:b567d56a59d7 35
embeddedartists 0:b567d56a59d7 36 void PictureDemo::drawCentered(const unsigned char* pData, int size, uint32_t delayMs)
embeddedartists 0:b567d56a59d7 37 {
embeddedartists 0:b567d56a59d7 38 Image::ImageData_t data;
embeddedartists 0:b567d56a59d7 39 int result = Image::decode(pData, size, &data);
embeddedartists 0:b567d56a59d7 40 if (result == 0)
embeddedartists 0:b567d56a59d7 41 {
embeddedartists 0:b567d56a59d7 42 // Draw the image centered on the screen
embeddedartists 0:b567d56a59d7 43 unsigned int xoff = (windowX - data.width)/2;
embeddedartists 0:b567d56a59d7 44 unsigned int yoff = (windowY - data.height)/2;
embeddedartists 0:b567d56a59d7 45 for (int y = 0; y < data.height; y++)
embeddedartists 0:b567d56a59d7 46 {
embeddedartists 0:b567d56a59d7 47 memcpy(this->pFrmBuf1 + (y+yoff)*windowX + xoff,
embeddedartists 0:b567d56a59d7 48 data.pixels + y*data.width,
embeddedartists 0:b567d56a59d7 49 data.width*2);
embeddedartists 0:b567d56a59d7 50 }
embeddedartists 0:b567d56a59d7 51
embeddedartists 0:b567d56a59d7 52 free(data.pixels);
embeddedartists 0:b567d56a59d7 53 }
embeddedartists 0:b567d56a59d7 54 else
embeddedartists 0:b567d56a59d7 55 {
embeddedartists 0:b567d56a59d7 56 printf("Failed to decode image\n");
embeddedartists 0:b567d56a59d7 57 }
embeddedartists 0:b567d56a59d7 58 }
embeddedartists 0:b567d56a59d7 59
embeddedartists 0:b567d56a59d7 60 /******************************************************************************
embeddedartists 0:b567d56a59d7 61 * Public functions
embeddedartists 0:b567d56a59d7 62 *****************************************************************************/
embeddedartists 0:b567d56a59d7 63 PictureDemo::PictureDemo(uint8_t *pFrameBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:b567d56a59d7 64 {
embeddedartists 0:b567d56a59d7 65 this->windowX = dispWidth;
embeddedartists 0:b567d56a59d7 66 this->windowY = dispHeight;
embeddedartists 0:b567d56a59d7 67 this->pFrmBuf = (uint16_t *)pFrameBuf;
embeddedartists 0:b567d56a59d7 68 this->pFrmBuf1 = (uint16_t *)pFrameBuf;
embeddedartists 0:b567d56a59d7 69 this->pFrmBuf2 = (uint16_t *)((uint32_t)pFrameBuf + dispWidth*dispHeight*2);
embeddedartists 0:b567d56a59d7 70 this->pFrmBuf3 = (uint16_t *)((uint32_t)pFrameBuf + dispWidth*dispHeight*4);
embeddedartists 0:b567d56a59d7 71 }
embeddedartists 0:b567d56a59d7 72
embeddedartists 0:b567d56a59d7 73 void PictureDemo::run(EaLcdBoardGPIO& lcdBoard, int image, uint32_t delayMs)
embeddedartists 0:b567d56a59d7 74 {
embeddedartists 0:b567d56a59d7 75 printf("PictureDemo, image %d, %dms delay\n", image, delayMs);
embeddedartists 0:b567d56a59d7 76
embeddedartists 0:b567d56a59d7 77 memset(this->pFrmBuf1, 0xff, windowX*windowY*2);
embeddedartists 0:b567d56a59d7 78 switch (image)
embeddedartists 0:b567d56a59d7 79 {
embeddedartists 0:b567d56a59d7 80 case 1:
embeddedartists 0:b567d56a59d7 81 drawCentered(eaLogo_image, eaLogo_image_sz, delayMs);
embeddedartists 0:b567d56a59d7 82 break;
embeddedartists 0:b567d56a59d7 83
embeddedartists 0:b567d56a59d7 84 default:
embeddedartists 0:b567d56a59d7 85 drawCentered(splash_image, splash_image_sz, delayMs);
embeddedartists 0:b567d56a59d7 86 break;
embeddedartists 0:b567d56a59d7 87 }
embeddedartists 0:b567d56a59d7 88
embeddedartists 0:b567d56a59d7 89 //update framebuffer
embeddedartists 0:b567d56a59d7 90 lcdBoard.setFrameBuffer((uint32_t)this->pFrmBuf1);
embeddedartists 0:b567d56a59d7 91
embeddedartists 0:b567d56a59d7 92 wait_ms(delayMs);
embeddedartists 0:b567d56a59d7 93 }
embeddedartists 0:b567d56a59d7 94