Basic swim GUI for LPC4088
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Diff: SlideShow/AppSlideShow.cpp
- Revision:
- 5:f4de114c31c3
- Child:
- 11:265884fa7fdd
diff -r a73760d09423 -r f4de114c31c3 SlideShow/AppSlideShow.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SlideShow/AppSlideShow.cpp Sun Dec 21 13:53:07 2014 +0100 @@ -0,0 +1,118 @@ +/* + * Copyright 2014 Embedded Artists AB + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + +#include "mbed.h" +#include "AppSlideShow.h" + +/****************************************************************************** + * Defines and typedefs + *****************************************************************************/ + +#define TICKER_RESOLUTION_IN_MS 10 + +/****************************************************************************** + * Global variables + *****************************************************************************/ + +volatile uint32_t msTicks = 0; + +/****************************************************************************** + * Private functions + *****************************************************************************/ + +static void tRender(void const *args) +{ + Renderer* s = (Renderer*)args; + s->render(); +} + +static void ticker(void const *n) { + msTicks += TICKER_RESOLUTION_IN_MS; +} + +/****************************************************************************** + * Public functions + *****************************************************************************/ + +AppSlideShow::AppSlideShow() : _fb(NULL), _disp(NULL), _show(NULL), _rend(NULL), _fileMutex() +{ +} + +AppSlideShow::~AppSlideShow() +{ + teardown(); +} + +bool AppSlideShow::setup() +{ + SlideShow::SlideShowError err; + + _disp = DMBoard::instance().display(); + + _fb = _disp->allocateFramebuffer(); + if (_fb == NULL) { + err = SlideShow::OutOfMemory; + } else { + memset(_fb, 0xff, _disp->fbSize()); + _rend = new Renderer(); + _show = new SlideShow(_rend, "/mci/elec14", NULL, 150, 95, 1, &_fileMutex); + err = _show->prepare("/mci/elec14/ea_logo.txt"); + } + + return (err == SlideShow::Ok); +} + +void AppSlideShow::runToCompletion() +{ + // Save existing frame buffer + void* oldFB = _disp->swapFramebuffer(_fb); + + // Alternative 1: use the calling thread's context to run in + Thread tr(tRender, _rend, osPriorityHigh); + _rend->setRenderThread(&tr); + + // Generate the millisecond ticks for the slideshow + RtosTimer rtosTimer(ticker, osTimerPeriodic); + rtosTimer.start(TICKER_RESOLUTION_IN_MS); + + // Wait for slideshow to complete + _show->run(); + + tr.terminate(); + + // Restore the original FB + _disp->swapFramebuffer(oldFB); +} + +bool AppSlideShow::teardown() +{ + if (_show != NULL) { + free(_show); + _show = NULL; + } + if (_rend != NULL) { + free(_rend); + _rend = NULL; + } + if (_fb != NULL) { + free(_fb); + _fb = NULL; + } + return true; +} + +