c语言使用libzplay录制声音并写到文件的方法（c语言使用libzplay录制声音并写到文件的方法）

本文实例讲述了C语言使用libZPlay录制声音并写到文件的方法。分享给大家供大家参考。具体实现方法如下：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 /** * Record samples from line-in and save to out.mp3 * */ #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <olectl.h> #include <ole2.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <conio.h> #include <dos.h> #include <conio.h> #include "../include/libzplay.h" using namespace libZPlay; ZPlay* player; int nRate = 100; int nPitch = 100; int nTempo = 100; int fCenterCut = 0; int fSideCut = 0; int fMixChannels = 0; int lVolume = 100; int rVolume = 100; int fPause = 0; int fEcho = 0; int fEq = 0; int fReverse = 0; TStreamStatus status; TStreamTime pos; int main(int argc, char **argv) { // clear screen system("CLS"); // create class instance player = CreateZPlay(); // chek if we have class instance if(player == 0) { printf("Error: Can't create class instance !\nPress key to exit.\n"); getch(); return 0; } // get library version int ver = player->GetVersion(); // check if we have version 2.00 and above if(ver < 200) { printf("Error: Need library version 2.00 and above !\nPress key to exit.\r\n"); getch(); player->Release(); return 0; } // display version info printf("libZPlay v.%i.%02i\r\n\r\n", ver / 100, ver % 100); printf( "x: play \tj: fade out \ti: side cut \td: pitch down\r\n" "c: pause \tk: fade in \to: center cut \tf: pitch up\r\n" "v: stop \tl: loop \tn: volume down\tg: tempo down\r\n" "y: rew \tp: equalizer \tm: volume up \th: tempo up\r\n" "b: fwd \te: echo \ta: rate down \r\n" "r: reverse \tt: channel mix\ts: rate up \tq: quit\r\n\r\n"); // open wavein using Line In if(player->OpenFile("wavein://src=line;volume=50;", sfAutodetect) == 0) { printf("Error: %s\nPress key to exit.\r\n", player->GetError()); getch(); player->Release(); return 0; } // set wave output to disk file, mp3 encoding if(player->SetWaveOutFile("out.mp3", sfMp3, 1) == 0) { printf("Error: %s\nPress key to exit.\r\n", player->GetError()); getch(); player->Release(); return 0; } // get stream info TStreamInfo pInfo; player->GetStreamInfo(&pInfo); // display info about stream char *sVbr = "CBR"; if(pInfo.VBR) sVbr = "VBR"; printf("\r\n%s %i Hz %s Channel: %u Length: %02i:%02i:%02i:%02i\r\n\r\n", pInfo.Description, pInfo.SamplingRate, sVbr, pInfo.ChannelNumber, pInfo.Length.hms.hour, pInfo.Length.hms.minute, pInfo.Length.hms.second, pInfo.Length.hms.millisecond); printf("Status| kbps | POS: |Echo|Equ|Cut|Fade|Rev|Rate|Pitch|Tempo|Vol|Loop|Ch mix|\r\n"); // start playing if(player->Play() == 0) { printf("Error: %s\nPress key to exit.\r\n", player->GetError()); player->Release(); // delete ZPlay class return 0; } while(1) { // get current status player->GetStatus(&status); char *st = 0; if(status.fPlay) st = "Play "; else if(status.fPause) st = "Pause"; else st = "Stop "; // get current position player->GetPosition(&pos); printf("%s %04i %02i:%02i:%02i %i %i %i %i %i %03i %03i %03i %03i %i %i\r", st, player->GetBitrate(0), pos.hms.hour, pos.hms.minute, pos.hms.second, status.fEcho, status.fEqualizer, status.fVocalCut, status.fSlideVolume, status.fReverse, player->GetRate(), player->GetPitch(), player->GetTempo(), lVolume, status.nLoop, fMixChannels ); if(kbhit()) { int a = getch(); switch(a) { case 'i': // side cut fSideCut = !fSideCut; player->StereoCut(fSideCut, 1, 0); fCenterCut = 0; break; case 'o': // center fCenterCut = !fCenterCut; player->StereoCut(fCenterCut, 0, 0); fSideCut = 0; break; case 's': // higher rate nRate += 5; player->SetRate(nRate); break; case 'a': // lower rate nRate -= 5; if(nRate < 0) nRate = 0; player->SetRate(nRate); break; case 'd': // lower pitch nPitch -= 5; if(nPitch < 0) nPitch = 0; player->SetPitch(nPitch); break; case 'f': // higher pitch nPitch += 5; player->SetPitch(nPitch); break; case 'g': // lower tempo nTempo -= 5; if(nTempo < 0) nTempo = 0; player->SetTempo(nTempo); break; case 'h': // higher tempo nTempo += 5; player->SetTempo(nTempo); break; case 'r': // reverse mode fReverse = !fReverse; if(player->ReverseMode(fReverse) == 0) { printf("Error: %s\n", player->GetError()); fReverse = 0; } break; case 'p': // enable or disable equalizer { fEq = !fEq; player->EnableEqualizer(fEq); if(fEq) { player->SetEqualizerPreampGain(-100000); player->SetEqualizerBandGain(0, 104000); player->SetEqualizerBandGain(1, 104000); player->SetEqualizerBandGain(2, 104000); } } break; case 'l': // play loop { TStreamTime pCurrentTime; player->GetPosition(&pCurrentTime); TStreamTime pEndTime; pEndTime.ms = pCurrentTime.ms + 5000; player->PlayLoop(tfMillisecond, &pCurrentTime, tfMillisecond, &pEndTime ,5, 1); } break; case 'j': // fade out volume { TStreamTime start; TStreamTime end; player->GetPosition(&start); end.sec = start.sec + 5; player->SlideVolume( tfSecond, &start, 100,100, tfSecond, &end, 0,0); } break; case 'k': // fade in volume { TStreamTime start; player->GetPosition(&start); TStreamTime end; end.sec = start.sec + 5; player->SlideVolume( tfSecond, &start, 0,0, tfSecond, &end, 100, 100); } break; case 'e': // enable echo { fEcho = !fEcho; player->EnableEcho(fEcho); } break; case 'x': // play if(player->Play() == 0) printf("Err: %s\n", player->GetError()); fPause = 0; break; case 'v': // stop player->Stop(); fPause = 0; break; case 'c': // pause if(fPause) { player->Resume(); fPause = 0; } else { player->Pause(); fPause = 1; } break; case 'y': // jump back 5 seconds { TStreamTime pTime; pTime.sec = 5; player->Seek(tfSecond, &pTime, smFromCurrentBackward); } break; case 'b': // jump forward 5 seconds { TStreamTime pTime; pTime.sec = 5; player->Seek(tfSecond, &pTime, smFromCurrentForward); } break; case 't': { // mix stereo channels to mono fMixChannels = !fMixChannels; player->MixChannels(fMixChannels, 50, 50); } break; case 'n': // volume down if(lVolume >= 5) lVolume -= 5; if(rVolume >= 5) rVolume -= 5; player->SetMasterVolume(lVolume, rVolume); break; case 'm': // volume up if(lVolume <= 95) lVolume += 5; if(rVolume <= 95) rVolume += 5; player->SetMasterVolume(lVolume, rVolume); break; case 'q': case 'Q': player->Release(); return 0; } } Sleep(50); } }