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https://github.com/libSDL2pp/libSDL2pp.git
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24482d85f6
Though these are broken and error prone, as they ignore the possibility of conflicts between SDL, SDL2 and wrappers thereof discarding useful include path prefix (SDL2/), since SDL and satellite libraries follow these it's too hard to stay away. So don't use prefixes for SDL include paths any longer.
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/*
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libSDL2pp - C++11 bindings/wrapper for SDL2
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Copyright (C) 2013-2016 Dmitry Marakasov <amdmi3@amdmi3.ru>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include <cmath>
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#include <iostream>
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#include <SDL.h>
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#include <SDL2pp/SDL.hh>
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#include <SDL2pp/Mixer.hh>
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using namespace SDL2pp;
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int main(int, char*[]) try {
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SDL sdl(SDL_INIT_AUDIO);
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Mixer mixer(MIX_DEFAULT_FREQUENCY, AUDIO_S16SYS, 1, 4096);
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float frequency = 2093.00f; // C7 tone
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int64_t nsample = 0;
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// Set custom music hook which generates a sine wave
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mixer.SetMusicHook([&nsample, frequency](Uint8* stream, int len) {
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// fill provided buffer with sine wave
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for (Uint8* ptr = stream; ptr < stream + len; ptr += 2)
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*(Uint16*)ptr = (Uint16)(32766.0f * sin(nsample++ / (float)MIX_DEFAULT_FREQUENCY * frequency));
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}
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);
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// Play for 1 second, after which everything is stopped and closed
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SDL_Delay(1000);
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return 0;
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} catch (std::exception& e) {
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std::cerr << "Error: " << e.what() << std::endl;
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return 1;
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}
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