Embedded Artists / DMBasicGUI

A basic graphics package for the LPC4088 Display Module.

Dependents:   lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI lpc4088_displaymodule_fs_aid ... more

Fork of DMBasicGUI by EmbeddedArtists AB

SlideShow/AppSlideShow.cpp@5:f4de114c31c3, 2014-12-21 (annotated)

Committer:
embeddedartists
Date:
Sun Dec 21 13:53:07 2014 +0100
Revision:
5:f4de114c31c3
Child:
11:265884fa7fdd
- Added support for RAW images

- Added SlideShow + App for it

- Moved App-specific stuff out from the AppLauncher and into main

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 5:f4de114c31c3 1 /*
embeddedartists 5:f4de114c31c3 2 * Copyright 2014 Embedded Artists AB
embeddedartists 5:f4de114c31c3 3 *
embeddedartists 5:f4de114c31c3 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 5:f4de114c31c3 5 * you may not use this file except in compliance with the License.
embeddedartists 5:f4de114c31c3 6 * You may obtain a copy of the License at
embeddedartists 5:f4de114c31c3 7 *
embeddedartists 5:f4de114c31c3 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 5:f4de114c31c3 9 *
embeddedartists 5:f4de114c31c3 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 5:f4de114c31c3 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 5:f4de114c31c3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 5:f4de114c31c3 13 * See the License for the specific language governing permissions and
embeddedartists 5:f4de114c31c3 14 * limitations under the License.
embeddedartists 5:f4de114c31c3 15 */
embeddedartists 5:f4de114c31c3 16
embeddedartists 5:f4de114c31c3 17
embeddedartists 5:f4de114c31c3 18 #include "mbed.h"
embeddedartists 5:f4de114c31c3 19 #include "AppSlideShow.h"
embeddedartists 5:f4de114c31c3 20
embeddedartists 5:f4de114c31c3 21 /******************************************************************************
embeddedartists 5:f4de114c31c3 22 * Defines and typedefs
embeddedartists 5:f4de114c31c3 23 *****************************************************************************/
embeddedartists 5:f4de114c31c3 24
embeddedartists 5:f4de114c31c3 25 #define TICKER_RESOLUTION_IN_MS 10
embeddedartists 5:f4de114c31c3 26
embeddedartists 5:f4de114c31c3 27 /******************************************************************************
embeddedartists 5:f4de114c31c3 28 * Global variables
embeddedartists 5:f4de114c31c3 29 *****************************************************************************/
embeddedartists 5:f4de114c31c3 30
embeddedartists 5:f4de114c31c3 31 volatile uint32_t msTicks = 0;
embeddedartists 5:f4de114c31c3 32
embeddedartists 5:f4de114c31c3 33 /******************************************************************************
embeddedartists 5:f4de114c31c3 34 * Private functions
embeddedartists 5:f4de114c31c3 35 *****************************************************************************/
embeddedartists 5:f4de114c31c3 36
embeddedartists 5:f4de114c31c3 37 static void tRender(void const *args)
embeddedartists 5:f4de114c31c3 38 {
embeddedartists 5:f4de114c31c3 39 Renderer* s = (Renderer*)args;
embeddedartists 5:f4de114c31c3 40 s->render();
embeddedartists 5:f4de114c31c3 41 }
embeddedartists 5:f4de114c31c3 42
embeddedartists 5:f4de114c31c3 43 static void ticker(void const *n) {
embeddedartists 5:f4de114c31c3 44 msTicks += TICKER_RESOLUTION_IN_MS;
embeddedartists 5:f4de114c31c3 45 }
embeddedartists 5:f4de114c31c3 46
embeddedartists 5:f4de114c31c3 47 /******************************************************************************
embeddedartists 5:f4de114c31c3 48 * Public functions
embeddedartists 5:f4de114c31c3 49 *****************************************************************************/
embeddedartists 5:f4de114c31c3 50
embeddedartists 5:f4de114c31c3 51 AppSlideShow::AppSlideShow() : _fb(NULL), _disp(NULL), _show(NULL), _rend(NULL), _fileMutex()
embeddedartists 5:f4de114c31c3 52 {
embeddedartists 5:f4de114c31c3 53 }
embeddedartists 5:f4de114c31c3 54
embeddedartists 5:f4de114c31c3 55 AppSlideShow::~AppSlideShow()
embeddedartists 5:f4de114c31c3 56 {
embeddedartists 5:f4de114c31c3 57 teardown();
embeddedartists 5:f4de114c31c3 58 }
embeddedartists 5:f4de114c31c3 59
embeddedartists 5:f4de114c31c3 60 bool AppSlideShow::setup()
embeddedartists 5:f4de114c31c3 61 {
embeddedartists 5:f4de114c31c3 62 SlideShow::SlideShowError err;
embeddedartists 5:f4de114c31c3 63
embeddedartists 5:f4de114c31c3 64 _disp = DMBoard::instance().display();
embeddedartists 5:f4de114c31c3 65
embeddedartists 5:f4de114c31c3 66 _fb = _disp->allocateFramebuffer();
embeddedartists 5:f4de114c31c3 67 if (_fb == NULL) {
embeddedartists 5:f4de114c31c3 68 err = SlideShow::OutOfMemory;
embeddedartists 5:f4de114c31c3 69 } else {
embeddedartists 5:f4de114c31c3 70 memset(_fb, 0xff, _disp->fbSize());
embeddedartists 5:f4de114c31c3 71 _rend = new Renderer();
embeddedartists 5:f4de114c31c3 72 _show = new SlideShow(_rend, "/mci/elec14", NULL, 150, 95, 1, &_fileMutex);
embeddedartists 5:f4de114c31c3 73 err = _show->prepare("/mci/elec14/ea_logo.txt");
embeddedartists 5:f4de114c31c3 74 }
embeddedartists 5:f4de114c31c3 75
embeddedartists 5:f4de114c31c3 76 return (err == SlideShow::Ok);
embeddedartists 5:f4de114c31c3 77 }
embeddedartists 5:f4de114c31c3 78
embeddedartists 5:f4de114c31c3 79 void AppSlideShow::runToCompletion()
embeddedartists 5:f4de114c31c3 80 {
embeddedartists 5:f4de114c31c3 81 // Save existing frame buffer
embeddedartists 5:f4de114c31c3 82 void* oldFB = _disp->swapFramebuffer(_fb);
embeddedartists 5:f4de114c31c3 83
embeddedartists 5:f4de114c31c3 84 // Alternative 1: use the calling thread's context to run in
embeddedartists 5:f4de114c31c3 85 Thread tr(tRender, _rend, osPriorityHigh);
embeddedartists 5:f4de114c31c3 86 _rend->setRenderThread(&tr);
embeddedartists 5:f4de114c31c3 87
embeddedartists 5:f4de114c31c3 88 // Generate the millisecond ticks for the slideshow
embeddedartists 5:f4de114c31c3 89 RtosTimer rtosTimer(ticker, osTimerPeriodic);
embeddedartists 5:f4de114c31c3 90 rtosTimer.start(TICKER_RESOLUTION_IN_MS);
embeddedartists 5:f4de114c31c3 91
embeddedartists 5:f4de114c31c3 92 // Wait for slideshow to complete
embeddedartists 5:f4de114c31c3 93 _show->run();
embeddedartists 5:f4de114c31c3 94
embeddedartists 5:f4de114c31c3 95 tr.terminate();
embeddedartists 5:f4de114c31c3 96
embeddedartists 5:f4de114c31c3 97 // Restore the original FB
embeddedartists 5:f4de114c31c3 98 _disp->swapFramebuffer(oldFB);
embeddedartists 5:f4de114c31c3 99 }
embeddedartists 5:f4de114c31c3 100
embeddedartists 5:f4de114c31c3 101 bool AppSlideShow::teardown()
embeddedartists 5:f4de114c31c3 102 {
embeddedartists 5:f4de114c31c3 103 if (_show != NULL) {
embeddedartists 5:f4de114c31c3 104 free(_show);
embeddedartists 5:f4de114c31c3 105 _show = NULL;
embeddedartists 5:f4de114c31c3 106 }
embeddedartists 5:f4de114c31c3 107 if (_rend != NULL) {
embeddedartists 5:f4de114c31c3 108 free(_rend);
embeddedartists 5:f4de114c31c3 109 _rend = NULL;
embeddedartists 5:f4de114c31c3 110 }
embeddedartists 5:f4de114c31c3 111 if (_fb != NULL) {
embeddedartists 5:f4de114c31c3 112 free(_fb);
embeddedartists 5:f4de114c31c3 113 _fb = NULL;
embeddedartists 5:f4de114c31c3 114 }
embeddedartists 5:f4de114c31c3 115 return true;
embeddedartists 5:f4de114c31c3 116 }
embeddedartists 5:f4de114c31c3 117
embeddedartists 5:f4de114c31c3 118