1 | // NOTE: https://stackoverflow.com/a/49673867/868014 |
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2 | |
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3 | #define _WIN32_IE 0x0500 |
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4 | #define _WIN32_WINNT 0x0501 |
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5 | #define WINVER _WIN32_WINNT |
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6 | |
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7 | #include <windows.h> |
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8 | #include <mmsystem.h> |
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9 | #include <commctrl.h> |
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10 | |
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11 | #include <stdint.h> |
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12 | #include <stdio.h> |
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13 | #include <math.h> |
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14 | #include <assert.h> |
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15 | |
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16 | #pragma comment(lib, "winmm.lib") |
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17 | #pragma comment(lib, "comctl32.lib") |
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18 | |
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19 | short freq, ampl; |
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20 | |
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21 | |
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22 | |
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23 | typedef struct { |
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24 | long chnl, smpl, bits, size, swiz; |
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25 | void *sink, *data[2]; |
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26 | } WAVE; |
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27 | |
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28 | |
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29 | |
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30 | LRESULT APIENTRY WndProc(HWND hWnd, UINT uMsg, WPARAM wPrm, LPARAM lPrm) { |
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31 | switch (uMsg) { |
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32 | case WM_DESTROY: |
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33 | PostQuitMessage(0); |
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34 | return 0; |
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35 | |
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36 | case WM_NOTIFY: |
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37 | switch (((NMHDR*)lPrm)->idFrom) { |
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38 | case 2: |
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39 | freq = ((NMUPDOWN*)lPrm)->iPos; |
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40 | break; |
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41 | |
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42 | case 4: |
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43 | ampl = ((NMUPDOWN*)lPrm)->iPos; |
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44 | break; |
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45 | } |
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46 | return 0; |
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47 | |
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48 | default: |
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49 | break; |
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50 | } |
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51 | return DefWindowProc(hWnd, uMsg, wPrm, lPrm); |
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52 | } |
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53 | |
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54 | |
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55 | |
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56 | void FillBuf(WAVE *wave, short freq, short ampl, long *phaz) { |
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57 | int16_t *data = (int16_t *) wave->data[wave->swiz ^= 1]; |
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58 | float tone = 1.0f * freq / wave->smpl; |
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59 | long iter; |
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60 | |
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61 | for(iter = 0; iter < wave->size; iter++) |
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62 | data[iter] = ((long)(tone * (iter + *phaz)) & 1)? ampl : -ampl; |
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63 | |
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64 | *phaz = *phaz + iter;//2.0 * frac(0.5 * tone * (iter + *phaz)) / tone; |
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65 | } |
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66 | |
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67 | |
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68 | |
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69 | DWORD APIENTRY WaveFunc(LPVOID data) |
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70 | { |
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71 | WAVEHDR *whdr; |
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72 | WAVE *wave; |
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73 | intptr_t *sink; |
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74 | long size, phaz = 0; |
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75 | |
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76 | wave = (WAVE*)data; |
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77 | whdr = (WAVEHDR*)(sink = (intptr_t*) wave->sink)[1]; |
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78 | size = wave->chnl * wave->size * (wave->bits >> 3); |
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79 | |
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80 | HWAVEOUT hWaveOut = (HWAVEOUT) sink[0]; |
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81 | HANDLE hEvent = (HANDLE)sink[2]; |
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82 | |
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83 | whdr[0].dwBufferLength = whdr[1].dwBufferLength = size; |
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84 | whdr[0].dwFlags = whdr[1].dwFlags = 0; |
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85 | whdr[0].dwLoops = whdr[1].dwLoops = 0; |
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86 | whdr[0].lpData = (LPSTR)(wave->data[0] = calloc(1, size)); |
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87 | whdr[1].lpData = (LPSTR)(wave->data[1] = calloc(1, size)); |
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88 | |
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89 | ResetEvent(hEvent); |
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90 | |
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91 | assert(wave->swiz == 0); |
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92 | FillBuf(wave, freq, ampl, &phaz); |
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93 | waveOutPrepareHeader(hWaveOut, &whdr[1], sizeof (WAVEHDR)); |
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94 | waveOutWrite(hWaveOut, &whdr[1], sizeof (WAVEHDR)); |
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95 | |
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96 | assert(wave->swiz == 1); |
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97 | FillBuf(wave, freq, ampl, &phaz); |
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98 | waveOutPrepareHeader(hWaveOut, &whdr[0], sizeof (WAVEHDR)); |
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99 | waveOutWrite(hWaveOut, &whdr[0], sizeof (WAVEHDR)); |
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100 | |
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101 | for(; ; ) |
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102 | { |
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103 | WaitForSingleObject(hEvent, INFINITE); |
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104 | ResetEvent(hEvent); |
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105 | for(long index = 0; index < 2; index++) |
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106 | if(whdr[index].dwFlags & WHDR_DONE) |
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107 | { |
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108 | wave->swiz = index ^ 1; |
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109 | //waveOutUnprepareHeader(hWaveOut, &whdr[wave->swiz], sizeof (WAVEHDR)); |
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110 | FillBuf(wave, freq, ampl, &phaz); |
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111 | //waveOutPrepareHeader(hWaveOut, &whdr[wave->swiz], sizeof (WAVEHDR)); |
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112 | waveOutWrite(hWaveOut, &whdr[wave->swiz], sizeof (WAVEHDR)); |
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113 | } |
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114 | } |
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115 | return 0; |
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116 | } |
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117 | |
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118 | |
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119 | |
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120 | int main() //APIENTRY WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR args, int show) |
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121 | { |
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122 | WNDCLASSEX wndc = {sizeof(wndc), CS_HREDRAW | CS_VREDRAW, WndProc, 0, 0, |
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123 | NULL, //inst, |
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124 | LoadIcon(0, IDI_HAND), LoadCursor(0, IDC_ARROW), |
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125 | (HBRUSH)(COLOR_BTNFACE + 1), 0, L"-", 0}; |
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126 | INITCOMMONCONTROLSEX icct = {sizeof(icct), ICC_STANDARD_CLASSES}; |
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127 | MSG pmsg = { }; |
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128 | |
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129 | HWND mwnd, cwnd, spin; |
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130 | DWORD thrd; |
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131 | WAVEFORMATEX wfmt; |
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132 | intptr_t sink[3]; |
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133 | WAVE wave = {1, 44100, 16, 4096, 0, sink}; |
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134 | |
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135 | // AllocConsole(); |
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136 | // freopen("CONOUT$", "wb", stdout); |
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137 | |
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138 | InitCommonControlsEx(&icct); |
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139 | RegisterClassEx(&wndc); |
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140 | mwnd = CreateWindowEx(0, wndc.lpszClassName, L" ", |
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141 | WS_OVERLAPPEDWINDOW | WS_VISIBLE, |
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142 | CW_USEDEFAULT, CW_USEDEFAULT, 320, 240, |
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143 | HWND_DESKTOP, 0, wndc.hInstance, 0); |
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144 | |
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145 | |
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146 | cwnd = CreateWindowEx(WS_EX_CLIENTEDGE, WC_EDIT, 0, ES_AUTOHSCROLL |
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147 | | ES_WANTRETURN | ES_MULTILINE | ES_NUMBER | WS_CHILD |
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148 | | WS_VISIBLE, 10, 10, 100, 24, mwnd, (HMENU)1, 0, 0); |
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149 | SendMessage(cwnd, EM_LIMITTEXT, 9, 0); |
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150 | spin = CreateWindowEx(0, UPDOWN_CLASS, 0, UDS_HOTTRACK | UDS_NOTHOUSANDS |
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151 | | UDS_ALIGNRIGHT | UDS_SETBUDDYINT | UDS_ARROWKEYS |
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152 | | WS_CHILD | WS_VISIBLE, 0, 0, 0, 0, mwnd, (HMENU)2, 0, 0); |
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153 | SendMessage(spin, UDM_SETBUDDY, (WPARAM)cwnd, 0); |
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154 | SendMessage(spin, UDM_SETRANGE32, (WPARAM)20, (LPARAM)22050); |
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155 | SendMessage(spin, UDM_SETPOS32, 0, (LPARAM)(freq = 750 + 0 * 400)); |
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156 | |
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157 | |
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158 | cwnd = CreateWindowEx(WS_EX_CLIENTEDGE, WC_EDIT, 0, ES_AUTOHSCROLL |
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159 | | ES_WANTRETURN | ES_MULTILINE | ES_NUMBER | WS_CHILD |
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160 | | WS_VISIBLE, 10, 44, 100, 24, mwnd, (HMENU)3, 0, 0); |
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161 | SendMessage(cwnd, EM_LIMITTEXT, 9, 0); |
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162 | spin = CreateWindowEx(0, UPDOWN_CLASS, 0, UDS_HOTTRACK | UDS_NOTHOUSANDS |
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163 | | UDS_ALIGNRIGHT | UDS_SETBUDDYINT | UDS_ARROWKEYS |
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164 | | WS_CHILD | WS_VISIBLE, 0, 0, 0, 0, mwnd, (HMENU)4, 0, 0); |
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165 | SendMessage(spin, UDM_SETBUDDY, (WPARAM)cwnd, 0); |
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166 | SendMessage(spin, UDM_SETRANGE32, (WPARAM)0, (LPARAM)32767); |
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167 | SendMessage(spin, UDM_SETPOS32, 0, (LPARAM)(ampl = 7500 + 0 * 32767)); |
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168 | |
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169 | |
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170 | wfmt.wFormatTag = WAVE_FORMAT_PCM; |
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171 | wfmt.nChannels = (WORD) wave.chnl; |
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172 | wfmt.nSamplesPerSec = (DWORD) wave.smpl; |
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173 | wfmt.nAvgBytesPerSec = (DWORD) (((wave.chnl * wave.bits) >> 3) * wave.smpl); |
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174 | wfmt.nBlockAlign = (WORD) ((wave.chnl * wave.bits) >> 3); |
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175 | wfmt.wBitsPerSample = (WORD) wave.bits; |
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176 | wfmt.cbSize = 0; |
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177 | sink[1] = (intptr_t)calloc(2, sizeof(WAVEHDR)); |
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178 | waveOutOpen((LPHWAVEOUT)&sink[0], WAVE_MAPPER, &wfmt, |
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179 | sink[2] = (intptr_t)CreateEvent(0, 1, 0, 0), 0, |
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180 | CALLBACK_EVENT); |
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181 | SetThreadPriority(CreateThread(0, 0, WaveFunc, &wave, 0, &thrd), |
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182 | THREAD_PRIORITY_NORMAL + 0 * THREAD_PRIORITY_TIME_CRITICAL); |
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183 | |
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184 | while (pmsg.message != WM_QUIT) { |
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185 | if (PeekMessage(&pmsg, 0, 0, 0, PM_REMOVE)) { |
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186 | TranslateMessage(&pmsg); |
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187 | DispatchMessage(&pmsg); |
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188 | continue; |
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189 | } |
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190 | Sleep(1); |
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191 | } |
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192 | |
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193 | // TODO: waveOutUnprepareHeader and thread termination |
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194 | |
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195 | waveOutClose((HWAVEOUT)sink[0]); |
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196 | fclose(stdout); |
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197 | FreeConsole(); |
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198 | |
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199 | exit(pmsg.wParam); |
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200 | return 0; |
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201 | } |
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