contrib: added the old example_bass with a C++ wrapper
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Erik Faye-Lund
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decf843c04
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5c7dfb7bec
172
contrib/example_bass.cpp
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172
contrib/example_bass.cpp
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/* Copyright (C) 2007-2008 Erik Faye-Lund and Egbert Teeselink
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* For conditions of distribution and use, see copyright notice in LICENSE.TXT
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*/
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <d3d9.h>
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#include <d3dx9.h>
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#include <memory>
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#include <exception>
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#include <cstdio>
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#include <string>
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#include "bass.h"
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#include "sync-cpp.h"
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class BassTimer : public sync::Timer
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{
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public:
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BassTimer(HSTREAM stream, float bpm, int rowsPerBeat) : stream(stream)
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{
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rowRate = (double(bpm) / 60) * rowsPerBeat;
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}
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// BASS hooks
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void pause() { BASS_ChannelPause(stream); }
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void play() { BASS_ChannelPlay(stream, false); }
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float getTime() { return float(BASS_ChannelBytes2Seconds(stream, BASS_ChannelGetPosition(stream, BASS_POS_BYTE))); }
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float getRow() { return float(getTime() * rowRate); }
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void setRow(float row) { BASS_ChannelSetPosition(stream, BASS_ChannelSeconds2Bytes(stream, float(row / rowRate)), BASS_POS_BYTE); }
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bool isPlaying() { return (BASS_ChannelIsActive(stream) == BASS_ACTIVE_PLAYING); }
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private:
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HSTREAM stream;
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double rowRate;
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};
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#define WINDOWED 1
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const unsigned int width = 800;
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const unsigned int height = 600;
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int main(int argc, char *argv[])
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{
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int ret = 0;
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try
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{
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// initialize directx
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IDirect3D9 *d3d = Direct3DCreate9(D3D_SDK_VERSION);
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if (NULL == d3d) throw std::string("update directx, fool.");
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// create a window
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HWND hwnd = CreateWindowEx(0, "static", "GNU Rocket Example", WS_POPUP | WS_VISIBLE, 0, 0, width, height, 0, 0, GetModuleHandle(0), 0);
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// create the device
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IDirect3DDevice9 *device = NULL;
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static D3DPRESENT_PARAMETERS present_parameters = {width, height, D3DFMT_X8R8G8B8, 3, D3DMULTISAMPLE_NONE, 0, D3DSWAPEFFECT_DISCARD, 0, WINDOWED, 1, D3DFMT_D24S8, 0, WINDOWED ? 0 : D3DPRESENT_RATE_DEFAULT, 0};
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if (D3D_OK != d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &present_parameters, &device))
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throw std::string("could not create device. you computer SUCKS!");
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// init BASS
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int soundDevice = 1;
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if (!BASS_Init(soundDevice, 44100, 0, hwnd, 0)) throw std::string("failed to init bass");
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// load tune
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HSTREAM stream = BASS_StreamCreateFile(false, "tune.ogg", 0, 0, BASS_MP3_SETPOS | ((0 == soundDevice) ? BASS_STREAM_DECODE : 0));
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if (!stream) throw std::string("failed to open tune");
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// let's just assume 150 BPM (this holds true for the included tune)
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float bpm = 150.0f;
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// setup timer and construct sync-device
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BassTimer timer(stream, bpm, 8);
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std::auto_ptr<sync::Device> syncDevice = std::auto_ptr<sync::Device>(sync::createDevice("sync", timer));
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if (NULL == syncDevice.get()) throw std::string("something went wrong - failed to connect to host?");
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// get tracks
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sync::Track &clearRTrack = syncDevice->getTrack("clear.r");
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sync::Track &clearGTrack = syncDevice->getTrack("clear.g");
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sync::Track &clearBTrack = syncDevice->getTrack("clear.b");
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sync::Track &camRotTrack = syncDevice->getTrack("cam.rot");
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sync::Track &camDistTrack = syncDevice->getTrack("cam.dist");
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LPD3DXMESH cubeMesh = NULL;
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if (FAILED(D3DXCreateBox(
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device,
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1.0f, 1.0f, 1.0f,
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&cubeMesh, NULL
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)))
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return -1;
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// let's roll!
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BASS_Start();
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timer.play();
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bool done = false;
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while (!done)
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{
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float row = float(timer.getRow());
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if (!syncDevice->update(row)) done = true;
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// setup clear color
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D3DXCOLOR clearColor(
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clearRTrack.getValue(row),
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clearGTrack.getValue(row),
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clearBTrack.getValue(row),
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0.0
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);
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// paint the window
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device->BeginScene();
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device->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER | D3DCLEAR_STENCIL, clearColor, 1.0f, 0);
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/* D3DXMATRIX world;
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device->SetTransform(D3DTS_WORLD, &world); */
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float rot = camRotTrack.getValue(row);
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float dist = camDistTrack.getValue(row);
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D3DXVECTOR3 eye(sin(rot) * dist, 0, cos(rot) * dist);
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D3DXVECTOR3 at(0, 0, 0);
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D3DXVECTOR3 up(0, 1, 0);
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D3DXMATRIX view;
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D3DXMatrixLookAtLH(&view, &(eye + at), &at, &up);
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device->SetTransform(D3DTS_WORLD, &view);
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D3DXMATRIX proj;
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D3DXMatrixPerspectiveFovLH(&proj, D3DXToRadian(60), 4.0f / 3, 0.1f, 1000.f);
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device->SetTransform(D3DTS_PROJECTION, &proj);
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cubeMesh->DrawSubset(0);
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device->EndScene();
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device->Present(0, 0, 0, 0);
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BASS_Update(0); // decrease the chance of missing vsync
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MSG msg;
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while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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if (WM_QUIT == msg.message) done = true;
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if ((WM_KEYDOWN == msg.message) && (VK_ESCAPE == LOWORD(msg.wParam))) done = true;
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}
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}
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BASS_StreamFree(stream);
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BASS_Free();
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device->Release();
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d3d->Release();
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DestroyWindow(hwnd);
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}
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catch (const std::exception &e)
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{
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#ifdef _CONSOLE
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fprintf(stderr, "*** error: %s\n", e.what());
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#else
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MessageBox(NULL, e.what(), NULL, MB_OK | MB_ICONERROR | MB_SETFOREGROUND);
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#endif
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ret = -1;
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}
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catch (const std::string &str)
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{
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#ifdef _CONSOLE
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fprintf(stderr, "*** error: %s\n", str.c_str());
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#else
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MessageBox(NULL, e.what(), NULL, MB_OK | MB_ICONERROR | MB_SETFOREGROUND);
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#endif
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ret = -1;
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}
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return ret;
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}
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75
contrib/sync-cpp.h
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75
contrib/sync-cpp.h
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@ -0,0 +1,75 @@
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#include "../sync/sync.h"
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namespace sync {
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class Timer {
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public:
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virtual void pause() = 0;
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virtual void play() = 0;
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virtual void setRow(float) = 0;
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virtual bool isPlaying() = 0;
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};
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static void xpause(void *ptr, int flag)
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{
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Timer *timer = (Timer *)ptr;
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if (flag)
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timer->pause();
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else
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timer->play();
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}
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static void xset_row(void *ptr, int row)
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{
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Timer *timer = (Timer *)ptr;
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timer->setRow(float(row));
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}
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static int xis_playing(void *ptr)
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{
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Timer *timer = (Timer *)ptr;
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return timer->isPlaying();
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}
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class Track {
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public:
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float getValue(double row)
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{
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return sync_get_val(track, row);
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}
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sync_track *track;
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};
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class Device {
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public:
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Track getTrack(const char *name)
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{
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Track track;
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track.track = sync_get_track(device, name);
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return track;
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}
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bool update(double row)
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{
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sync_update(device, row);
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return true;
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}
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sync_device *device;
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sync_cb cb;
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};
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inline Device *createDevice(const char *prefix, Timer &timer)
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{
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Device *device = new Device;
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device->device = sync_create_device(prefix);
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if (!device->device) {
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delete device;
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return NULL;
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}
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device->cb.is_playing = xis_playing;
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device->cb.pause = xpause;
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device->cb.set_row = xset_row;
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sync_set_callbacks(device->device, &device->cb, (void *)&timer);
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return device;
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}
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}
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