src/lib/vgmsnd/main.c

   1 #ifdef _WIN32\r
   2 #ifdef _DEBUG\r
   3 #include <crtdbg.h>\r
   4 #endif\r
   5 #endif\r
   6 \r
   7 #include <stdlib.h>\r
   8 #include <stdio.h>\r
   9 #include <string.h>\r
  10 #include <ctype.h>      // for toupper()\r
  11 \r
  12 \r
  13 #ifdef _WIN32\r
  14 int __cdecl _getch(void);       // from conio.h\r
  15 #else\r
  16 #define _getch  getchar\r
  17 #endif\r
  18 \r
  19 #include <common.h>\r
  20 #include <audio/AudioStream.h>\r
  21 #include <audio/AudioStream_SpcDrvFuns.h>\r
  22 #include "vgmSndDrv.h"\r
  23 #include "3812intf.h"\r
  24 \r
  25 \r
  26 int main(int argc, char* argv[]);\r
  27 static UINT32 FillBuffer(void* Params, UINT32 bufSize, void* Data);\r
  28 void OPL2_Write(UINT8 reg, UINT8 data);\r
  29 UINT8 OPL2_ReadStatus(void);\r
  30 void EngineControlCUI(void);\r
  31 \r
  32 \r
  33 #define VGM_SLOTS       4\r
  34 \r
  35 static void* audDrv;\r
  36 static void* audDrvLog;\r
  37 INT32 CHIP_SAMPLE_RATE;\r
  38 VGM_FILE vgmFiles[VGM_SLOTS];\r
  39 \r
  40 int main(int argc, char* argv[])\r
  41 {\r
  42         UINT8 retVal;\r
  43         UINT32 drvCount;\r
  44         UINT32 idWavOut;\r
  45         UINT32 idWavOutDev;\r
  46         AUDDRV_INFO* drvInfo;\r
  47         AUDIO_OPTS* opts;\r
  48 \r
  49         Audio_Init();\r
  50         drvCount = Audio_GetDriverCount();\r
  51         if (! drvCount)\r
  52                 goto Exit_Deinit;\r
  53 \r
  54         idWavOut = 0;\r
  55         idWavOutDev = 0;\r
  56         Audio_GetDriverInfo(idWavOut, &drvInfo);\r
  57         printf("Using driver %s.\n", drvInfo->drvName);\r
  58         retVal = AudioDrv_Init(idWavOut, &audDrv);\r
  59         if (retVal)\r
  60         {\r
  61                 printf("WaveOut: Drv Init Error: %02X\n", retVal);\r
  62                 goto Exit_Deinit;\r
  63         }\r
  64 \r
  65         opts = AudioDrv_GetOptions(audDrv);\r
  66         opts->numChannels = 1;\r
  67         opts->numBitsPerSmpl = 16;\r
  68         CHIP_SAMPLE_RATE = opts->sampleRate;\r
  69 \r
  70         device_start_ym3812(0, 3579545);\r
  71         device_reset_ym3812(0);\r
  72         InitEngine();\r
  73 \r
  74         AudioDrv_SetCallback(audDrv, FillBuffer);\r
  75         printf("Opening Device %u ...\n", idWavOutDev);\r
  76         retVal = AudioDrv_Start(audDrv, idWavOutDev);\r
  77         if (retVal)\r
  78         {\r
  79                 printf("Dev Init Error: %02X\n", retVal);\r
  80                 goto Exit_DrvDeinit;\r
  81         }\r
  82 \r
  83         /*getchar();\r
  84         printf("Current Latency: %u ms\n", AudioDrv_GetLatency(audDrv));*/\r
  85         EngineControlCUI();\r
  86 \r
  87         retVal = AudioDrv_Stop(audDrv);\r
  88 \r
  89 Exit_DrvDeinit:\r
  90         DeinitEngine();\r
  91         device_stop_ym3812(0);\r
  92         AudioDrv_Deinit(&audDrv);\r
  93 Exit_Deinit:\r
  94         Audio_Deinit();\r
  95         printf("Done.\n");\r
  96 \r
  97 #if _DEBUG\r
  98         if (_CrtDumpMemoryLeaks())\r
  99                 _getch();\r
 100 #endif\r
 101 \r
 102         return 0;\r
 103 }\r
 104 \r
 105 INT32 chipSmplL[1] = {0};\r
 106 INT32 chipSmplR[1] = {0};\r
 107 INT32* chipSmpls[2] = {chipSmplL, chipSmplR};\r
 108 static UINT32 smplLastIrq = 0;\r
 109 static UINT32 FillBuffer(void* Params, UINT32 bufSize, void* data)\r
 110 {\r
 111         UINT32 smplCount;\r
 112         INT16* SmplPtr16;\r
 113         UINT32 curSmpl;\r
 114         INT32 chipSmplsFin;\r
 115 \r
 116         smplCount = bufSize / 2;\r
 117         SmplPtr16 = (INT16*)data;\r
 118         for (curSmpl = 0; curSmpl < smplCount; curSmpl ++)\r
 119         {\r
 120                 ym3812_stream_update(0, chipSmpls, 1);\r
 121                 UpdateSoundEngine();\r
 122                 smplLastIrq ++;\r
 123 \r
 124                 chipSmplsFin = chipSmplL[0];\r
 125 \r
 126 #if 0\r
 127                 if ((curSmpl / (smplCount / 16)) < 15)\r
 128                         chipSmplsFin += +0x0100;\r
 129                 else\r
 130                         chipSmplsFin += -0x0100;\r
 131 #endif\r
 132 \r
 133                 if (chipSmplsFin < -0x7FFF)\r
 134                         chipSmplsFin = -0x7FFF;\r
 135                 else if (chipSmplsFin > 0x7FFF)\r
 136                         chipSmplsFin = 0x7FFF;\r
 137                 SmplPtr16[curSmpl] = (INT16)chipSmplsFin;\r
 138         }\r
 139         return curSmpl * 2;\r
 140 }\r
 141 \r
 142 \r
 143 void OPL2_Write(UINT8 reg, UINT8 data)\r
 144 {\r
 145         ym3812_w(0, 0, reg);\r
 146         ym3812_w(0, 1, data);\r
 147         return;\r
 148 }\r
 149 \r
 150 UINT8 OPL2_ReadStatus(void)\r
 151 {\r
 152         return ym3812_r(0, 0);\r
 153 }\r
 154 \r
 155 \r
 156 \r
 157 INLINE UINT8 getVgmID(char vgmIdChar)\r
 158 {\r
 159         vgmIdChar = toupper(vgmIdChar);\r
 160         if (vgmIdChar == 'M')\r
 161                 return 0x00;\r
 162         else if (vgmIdChar >= '0' && vgmIdChar < '0'+VGM_SLOTS)\r
 163                 return (UINT8)(vgmIdChar - '0');\r
 164         else\r
 165                 return 0xFF;\r
 166 }\r
 167 \r
 168 INLINE UINT8 getVgmChn(char vgmChnChar)\r
 169 {\r
 170         vgmChnChar = toupper(vgmChnChar);\r
 171         if (vgmChnChar == 'M')\r
 172                 return 0x7F;\r
 173         else if (vgmChnChar >= '0' && vgmChnChar <= '9')\r
 174                 return vgmChnChar - '0';\r
 175         else\r
 176                 return 0xFF;\r
 177 }\r
 178 \r
 179 void EngineControlCUI(void)\r
 180 {\r
 181         VGM_FILE* tempVgmFile;\r
 182         UINT8 curSFX;\r
 183         char inLine[0x100];\r
 184         char* tempStr;\r
 185         int tempPos;\r
 186         UINT8 vgmId;\r
 187         UINT8 vgmChn;\r
 188         UINT8 retVal;\r
 189 \r
 190         printf("Commands:\n");\r
 191         printf("Ls File.vgm - Load File.vgm into Slot s\n");\r
 192         printf("Pcs - Play Slot s on Channel c\n");\r
 193         printf("Sc - Stop Channel c\n");\r
 194         printf("S - Stop all SFX\n");\r
 195         printf("E - Pause Music\n");\r
 196         printf("R - Resume Music\n");\r
 197         printf("Channels: M = music, 0-5 = SFX\n");\r
 198         printf("Slots: M, 0-3 (M equals slot 0)\n");\r
 199 \r
 200         for (curSFX = 0; curSFX < VGM_SLOTS; curSFX ++)\r
 201                 memset(&vgmFiles[curSFX], 0x00, sizeof(VGM_FILE));\r
 202 \r
 203         while(1)\r
 204         {\r
 205                 tempStr = fgets(inLine, 0x100, stdin);\r
 206                 if (tempStr == NULL)\r
 207                         break;\r
 208                 tempPos = strlen(inLine);\r
 209                 if (tempPos <= 1)\r
 210                         break;\r
 211                 inLine[tempPos-1] = '\0';\r
 212 \r
 213                 switch(toupper(inLine[0]))\r
 214                 {\r
 215                 case 'L':       // load\r
 216                         vgmId = getVgmID(inLine[1]);\r
 217                         if (vgmId == 0xFF)\r
 218                         {\r
 219                                 printf("Wrong File Slot!\n");\r
 220                                 break;\r
 221                         }\r
 222                         tempVgmFile = &vgmFiles[vgmId];\r
 223                         FreeVGMFile(tempVgmFile);\r
 224                         retVal = OpenVGMFile(inLine + 3, tempVgmFile);\r
 225                         if (retVal > 0)\r
 226                                 printf("Load Error 0x%02X\n", retVal);\r
 227                         else\r
 228                                 printf("VGM loaded into slot %d.\n", vgmId);\r
 229                         break;\r
 230                 case 'P':       // play\r
 231                         vgmChn = getVgmChn(inLine[1]);\r
 232                         vgmId = getVgmID(inLine[2]);\r
 233                         if (vgmChn == 0xFF)\r
 234                         {\r
 235                                 printf("Wrong Channel!\n");\r
 236                                 break;\r
 237                         }\r
 238                         if (vgmId == 0xFF)\r
 239                         {\r
 240                                 printf("Wrong File Slot!\n");\r
 241                                 break;\r
 242                         }\r
 243                         tempVgmFile = &vgmFiles[vgmId];\r
 244                         if (vgmChn == 0x7F)\r
 245                                 PlayMusic(tempVgmFile);\r
 246                         else\r
 247                                 PlaySFX(tempVgmFile, vgmChn);\r
 248                         break;\r
 249                 case 'S':       // stop\r
 250                         vgmChn = getVgmChn(inLine[1]);\r
 251                         if (vgmChn == 0x7F)\r
 252                                 StopMusic();\r
 253                         else\r
 254                                 StopSFX(vgmChn);\r
 255                         break;\r
 256                 case 'E':       // pause\r
 257                         PauseMusic();\r
 258                         break;\r
 259                 case 'R':       // resume\r
 260                         ResumeMusic();\r
 261                         break;\r
 262                 default:\r
 263                         printf("Unknown Command!\n");\r
 264                         break;\r
 265                 }\r
 266         }\r
 267 \r
 268         StopMusic();\r
 269         StopSFX(0xFF);\r
 270         for (curSFX = 0; curSFX < VGM_SLOTS; curSFX ++)\r
 271                 FreeVGMFile(&vgmFiles[curSFX]);\r
 272 \r
 273         printf("Quit.\n");\r
 274         _getch();\r
 275 \r
 276         return;\r
 277 }\r