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author | inmarket <andrewh@inmarket.com.au> | 2014-03-11 17:13:31 +1000 |
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committer | inmarket <andrewh@inmarket.com.au> | 2014-03-11 17:13:31 +1000 |
commit | ea5a1b849df6e5085a92957ad387f9e653674415 (patch) | |
tree | 72ede5ed78263a6fdba25039398b5c2a55bd1d3a /demos/modules/gaudio/oscilloscope/main.c | |
parent | 944c33cbff5f2cfb1c80f48193aa2161574864fd (diff) | |
download | uGFX-ea5a1b849df6e5085a92957ad387f9e653674415.tar.gz uGFX-ea5a1b849df6e5085a92957ad387f9e653674415.tar.bz2 uGFX-ea5a1b849df6e5085a92957ad387f9e653674415.zip |
Combine GAUDIN and GAUDOUT into a single GAUDIO module.
Simplify GAUDIN (now GAUDIO RECORD) api.
Update audio demo's to match.
Port Win32 driver to new audio api.
Diffstat (limited to 'demos/modules/gaudio/oscilloscope/main.c')
-rw-r--r-- | demos/modules/gaudio/oscilloscope/main.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/demos/modules/gaudio/oscilloscope/main.c b/demos/modules/gaudio/oscilloscope/main.c new file mode 100644 index 00000000..b44b5a02 --- /dev/null +++ b/demos/modules/gaudio/oscilloscope/main.c @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2012, 2013, Joel Bodenmann aka Tectu <joel@unormal.org> + * Copyright (c) 2012, 2013, Andrew Hannam aka inmarket + * + * 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 <organization> 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 <COPYRIGHT HOLDER> 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. + */ + +/** + * This demo demonstrates the use of the GAUDIN module to read audio channel 0. + * The audio channel gets read to display a very simple oscilloscope. + * + * It also demonstrates how to write your own custom GWIN window type. + */ +#include "gfx.h" + +/* Include our custom gwin audio oscilloscope */ +#include "gwinosc.h" + +/* Specify our timing parameters */ +#define MY_AUDIO_FREQUENCY 8000 /* 8khz. If this is too much try 4000 (4khz) */ +#define MY_AUDIO_CHANNEL 0 /* Use channel 0 - must be a mono channel */ +#define MY_AUDIO_FORMAT GAUDIO_RECORD_FORMAT1 /* The default format */ + +/* Data */ +static GScopeObject gScopeWindow; + +/* + * Application entry point. + */ +int main(void) { + GHandle ghScope; + coord_t swidth, sheight; + + gfxInit(); + + // Allocate audio buffers - 4 x 128 byte buffers. + // You may need to increase this for slower cpu's. + // You may be able to decrease this for low latency operating systems. + gaudioAllocBuffers(4, 128); + + /* Get the screen dimensions */ + swidth = gdispGetWidth(); + sheight = gdispGetHeight(); + + /* Set up the scope window to fill the screen */ + { + GWindowInit wi; + + wi.show = TRUE; + wi.x = wi.y = 0; + wi.width = swidth; wi.height = sheight; + ghScope = gwinScopeCreate(&gScopeWindow, &wi, MY_AUDIO_CHANNEL, MY_AUDIO_FREQUENCY, MY_AUDIO_FORMAT); + } + gwinSetBgColor(ghScope, White); + gwinSetColor(ghScope, Red); + gwinClear(ghScope); + + /* Just keep displaying the scope traces */ + while (TRUE) { + gwinScopeWaitForTrace(ghScope); + } +} |