/* Copyright (C) 1994-1995 Apogee Software, Ltd. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Modifications for JonoF's port by Jonathon Fowler (jonof@edgenetwk.com) */ /********************************************************************** module: MULTIVOC.C author: James R. Dose date: December 20, 1993 Routines to provide multichannel digitized sound playback for Sound Blaster compatible sound cards. (c) Copyright 1993 James R. Dose. All Rights Reserved. **********************************************************************/ #include #include #ifndef _MSC_VER #include #endif #include #ifdef _WIN32 #include "dsoundout.h" #ifdef USE_OPENAL #include "openal.h" #endif #else #include "dsl.h" #endif #include "compat.h" #include "baselayer.h" #include "usrhooks.h" #include "linklist.h" #include "pitch.h" #include "multivoc.h" #include "_multivc.h" #define STEREO 1 #define SIXTEEN_BIT 2 #define MONO_8BIT 0 #define STEREO_8BIT (STEREO) #define MONO_16BIT (SIXTEEN_BIT) #define STEREO_16BIT (STEREO | SIXTEEN_BIT) #define IS_QUIET(ptr) ((void *)(ptr) == (void *)&MV_VolumeTable[ 0 ]) static int MV_ReverbLevel; static int MV_ReverbDelay; static VOLUME16 *MV_ReverbTable = NULL; //static signed short MV_VolumeTable[ MV_MaxVolume + 1 ][ 256 ]; static signed short MV_VolumeTable[ 63 + 1 ][ 256 ]; //static Pan MV_PanTable[ MV_NumPanPositions ][ MV_MaxVolume + 1 ]; static Pan MV_PanTable[ MV_NumPanPositions ][ 63 + 1 ]; static int MV_Installed = FALSE; static int MV_SoundCard = -1; static int MV_TotalVolume = MV_MaxTotalVolume; static int MV_MaxVoices = 1; static int MV_Recording; static int MV_BufferSize = 0; static int MV_BufferLength; static int MV_NumberOfBuffers = NumberOfBuffers; static int MV_MixMode = MONO_8BIT; static int MV_Channels = 1; static int MV_Bits = 8; static int MV_Silence = SILENCE_8BIT; static int MV_SwapLeftRight = FALSE; static int MV_RequestedMixRate; static int MV_MixRate; static int MV_BuffShift; static int MV_TotalMemory; static int MV_BufferEmpty[ NumberOfBuffers ]; char *MV_MixBuffer[ NumberOfBuffers + 1 ]; static char *MV_MixBufferPtr = NULL; static VoiceNode *MV_Voices = NULL; static VoiceNode VoiceList; static VoiceNode VoicePool; int MV_MixPage = 0; static int MV_VoiceHandle = MV_MinVoiceHandle; static void(*MV_CallBackFunc)(unsigned int) = NULL; static void(*MV_RecordFunc)(char *ptr, int length) = NULL; static void(*MV_MixFunction)(VoiceNode *voice, int buffer); static int MV_MaxVolume = 63; char *MV_HarshClipTable; char *MV_MixDestination; short *MV_LeftVolume; short *MV_RightVolume; int MV_SampleSize = 1; int MV_RightChannelOffset; unsigned int MV_MixPosition; int MV_ErrorCode = MV_Ok; #define MV_SetErrorCode(status) \ MV_ErrorCode = (status); /*--------------------------------------------------------------------- Function: ClearBuffer_DW Function code relocated from _multivc.h due to linking issues. ---------------------------------------------------------------------*/ void ClearBuffer_DW(void *ptr, int data, int length) { int *pptr = ptr; for (; length>0; length--) *(pptr++) = data; } /*--------------------------------------------------------------------- Function: MV_ErrorString Returns a pointer to the error message associated with an error number. A -1 returns a pointer the current error. ---------------------------------------------------------------------*/ char *MV_ErrorString(int ErrorNumber) { char *ErrorString; switch (ErrorNumber) { case MV_Warning : case MV_Error : ErrorString = MV_ErrorString(MV_ErrorCode); break; case MV_Ok : ErrorString = "Multivoc ok."; break; case MV_UnsupportedCard : ErrorString = "Selected sound card is not supported by Multivoc."; break; case MV_NotInstalled : ErrorString = "Multivoc not installed."; break; case MV_NoVoices : ErrorString = "No free voices available to Multivoc."; break; case MV_NoMem : ErrorString = "Out of memory in Multivoc."; break; case MV_VoiceNotFound : ErrorString = "No voice with matching handle found."; break; case MV_BlasterError : #if defined(_WIN32) ErrorString = DSOUND_ErrorString(DSOUND_ErrorCode); #else ErrorString = DSL_ErrorString(DSL_ErrorCode); #endif break; case MV_DPMI_Error : ErrorString = "DPMI Error in Multivoc."; break; case MV_InvalidVOCFile : ErrorString = "Invalid VOC file passed in to Multivoc."; break; case MV_InvalidWAVFile : ErrorString = "Invalid WAV file passed in to Multivoc."; break; case MV_InvalidOGGFile : ErrorString = "Invalid OGG file passed in to Multivoc."; break; case MV_InvalidMixMode : ErrorString = "Invalid mix mode request in Multivoc."; break; case MV_IrqFailure : ErrorString = "Playback failed, possibly due to an invalid or conflicting IRQ."; break; case MV_DMAFailure : ErrorString = "Playback failed, possibly due to an invalid or conflicting DMA channel."; break; case MV_DMA16Failure : ErrorString = "Playback failed, possibly due to an invalid or conflicting DMA channel. \n" "Make sure the 16-bit DMA channel is correct."; break; case MV_NullRecordFunction : ErrorString = "Null record function passed to MV_StartRecording."; break; default : ErrorString = "Unknown Multivoc error code."; break; } return(ErrorString); } /********************************************************************** Memory locked functions: **********************************************************************/ /*--------------------------------------------------------------------- Function: MV_GetBufferSize Returns the buffer size for the given samplerate. ---------------------------------------------------------------------*/ #define BASEBUFSZ (512+128) static unsigned MV_GetBufferSize(unsigned samplerate) { static unsigned lastsr = 0, lastbufsz = 0; if (samplerate == lastsr) return lastbufsz; lastsr = samplerate; lastbufsz = (samplerate*BASEBUFSZ/22050)&(~15); #ifdef RENDERTYPEWIN { extern int is_vista; if (is_vista) lastbufsz = (samplerate*BASEBUFSZ/22050*2)&(~15); } #endif return lastbufsz; } /*--------------------------------------------------------------------- Function: MV_Mix Mixes the sound into the buffer. ---------------------------------------------------------------------*/ static void MV_Mix(VoiceNode *voice, int buffer) { char *start; int length; int voclength; unsigned int position; unsigned int rate; unsigned int FixedPointBufferSize; if ((voice->length == 0) && (voice->GetSound(voice) != KeepPlaying)) { return; } length = MixBufferSize; FixedPointBufferSize = voice->FixedPointBufferSize; MV_MixDestination = MV_MixBuffer[ buffer ]; MV_LeftVolume = voice->LeftVolume; MV_RightVolume = voice->RightVolume; if ((MV_Channels == 2) && (IS_QUIET(MV_LeftVolume))) { MV_LeftVolume = MV_RightVolume; MV_MixDestination += MV_RightChannelOffset; } // Add this voice to the mix while (length > 0) { start = voice->sound; rate = voice->RateScale; position = voice->position; // Check if the last sample in this buffer would be // beyond the length of the sample block if ((position + FixedPointBufferSize) >= voice->length) { if (position < voice->length) { voclength = (voice->length - position + rate - 1) / rate; } else { voice->GetSound(voice); return; } } else { voclength = length; } voice->mix(position, rate, start, voclength); if (voclength & 1) { MV_MixPosition += rate; voclength -= 1; } voice->position = MV_MixPosition; length -= voclength; if (voice->position >= voice->length) { // Get the next block of sound if (voice->GetSound(voice) != KeepPlaying) { return; } if (length > 0) { // Get the position of the last sample in the buffer FixedPointBufferSize = voice->RateScale * (length - 1); } } } } /*--------------------------------------------------------------------- Function: MV_PlayVoice Adds a voice to the play list. ---------------------------------------------------------------------*/ void MV_PlayVoice(VoiceNode *voice) { unsigned flags; flags = DisableInterrupts(); LL_SortedInsertion(&VoiceList, voice, prev, next, VoiceNode, priority); // if(!voice->bufsnd)voice->bufsnd=(char *)Bcalloc(0x8000*4,sizeof(char)); // if(!voice->bufsnd)initprintf("Attention. It gonna crash! Thank you."); // FIXME: change the msg RestoreInterrupts(flags); } /*--------------------------------------------------------------------- Function: MV_StopVoice Removes the voice from the play list and adds it to the free list. ---------------------------------------------------------------------*/ void MV_StopVoice(VoiceNode *voice) { unsigned int flags; flags = DisableInterrupts(); // if(!voice->bufsnd)Bfree(voice->bufsnd); // move the voice from the play list to the free list LL_Remove(voice, next, prev); LL_Add(&VoicePool, voice, next, prev); RestoreInterrupts(flags); } /*--------------------------------------------------------------------- Function: MV_ServiceVoc Starts playback of the waiting buffer and mixes the next one. ---------------------------------------------------------------------*/ // static int backcolor = 1; int MV_ServiceVoc(int buffer) { VoiceNode *voice; VoiceNode *next; // Get the currently playing buffer #if defined(_WIN32) MV_MixPage = buffer; #endif // Toggle which buffer we'll mix next MV_MixPage++; if (MV_MixPage >= MV_NumberOfBuffers) { MV_MixPage -= MV_NumberOfBuffers; } if (MV_ReverbLevel == 0) { // Initialize buffer //Commented out so that the buffer is always cleared. //This is so the guys at Echo Speech can mix into the //buffer even when no sounds are playing. //if (!MV_BufferEmpty[ MV_MixPage ]) { ClearBuffer_DW(MV_MixBuffer[ MV_MixPage ], MV_Silence, MV_BufferSize >> 2); MV_BufferEmpty[ MV_MixPage ] = TRUE; } } else { char *end; char *source; char *dest; int count; int length; end = MV_MixBuffer[ 0 ] + MV_BufferLength; dest = MV_MixBuffer[ MV_MixPage ]; source = MV_MixBuffer[ MV_MixPage ] - MV_ReverbDelay; if (source < MV_MixBuffer[ 0 ]) { source += MV_BufferLength; } length = MV_BufferSize; while (length > 0) { count = length; if (source + count > end) { count = end - source; } if (MV_Bits == 16) { if (MV_ReverbTable != NULL) { MV_16BitReverb(source, dest, MV_ReverbTable, count / 2); } else { MV_16BitReverbFast(source, dest, count / 2, MV_ReverbLevel); } } else { if (MV_ReverbTable != NULL) { MV_8BitReverb((signed char *)source, (signed char *)dest, MV_ReverbTable, count); } else { MV_8BitReverbFast((signed char *)source, (signed char *)dest, count, MV_ReverbLevel); } } // if we go through the loop again, it means that we've wrapped around the buffer source = MV_MixBuffer[ 0 ]; dest += count; length -= count; } } // Play any waiting voices for (voice = VoiceList.next; voice != &VoiceList; voice = next) { // if ((voice < &MV_Voices[ 0 ]) || (voice > &MV_Voices[ 8 ])) // { // SetBorderColor(backcolor++); // break; // } MV_BufferEmpty[ MV_MixPage ] = FALSE; MV_MixFunction(voice, MV_MixPage); next = voice->next; // Is this voice done? if (!voice->Playing) { MV_StopVoice(voice); if (MV_CallBackFunc) { MV_CallBackFunc(voice->callbackval); } } } return MV_MixPage; } /*--------------------------------------------------------------------- Function: MV_GetNextVOCBlock Interperate the information of a VOC format sound file. ---------------------------------------------------------------------*/ playbackstatus MV_GetNextVOCBlock(VoiceNode *voice) { unsigned char *ptr; int blocktype; int lastblocktype; unsigned int blocklength = 0; unsigned int samplespeed = 0; unsigned int tc = 0; int packtype; int voicemode; int done; unsigned BitsPerSample; unsigned Channels; unsigned Format; if (voice->BlockLength > 0) { voice->position -= voice->length; voice->sound += voice->length >> 16; if (voice->bits == 16) { voice->sound += voice->length >> 16; } voice->length = min(voice->BlockLength, 0x8000); voice->BlockLength -= voice->length; voice->length <<= 16; return(KeepPlaying); } if ((voice->length > 0) && (voice->LoopEnd != NULL) && (voice->LoopStart != NULL)) { voice->BlockLength = voice->LoopSize; voice->sound = voice->LoopStart; voice->position = 0; voice->length = min(voice->BlockLength, 0x8000); voice->BlockLength -= voice->length; voice->length <<= 16; return(KeepPlaying); } ptr = (unsigned char *)voice->NextBlock; voice->Playing = TRUE; voicemode = 0; lastblocktype = 0; packtype = 0; done = FALSE; while (!done) { // Stop playing if we get a NULL pointer if (ptr == NULL) { voice->Playing = FALSE; done = TRUE; break; } blocktype = (int)*ptr; blocklength = (*(unsigned int *)(ptr + 1)) & 0x00ffffff; ptr += 4; switch (blocktype) { case 0 : // End of data if ((voice->LoopStart == NULL) || ((unsigned int *)voice->LoopStart >= (unsigned int *)(ptr - 4))) { voice->Playing = FALSE; done = TRUE; } else { voice->BlockLength = (char*)(ptr - 4) - voice->LoopStart; voice->sound = voice->LoopStart; voice->position = 0; voice->length = min(voice->BlockLength, 0x8000); voice->BlockLength -= voice->length; voice->length <<= 16; return(KeepPlaying); } break; case 1 : // Sound data block voice->bits = 8; if (lastblocktype != 8) { tc = (unsigned int)*ptr << 8; packtype = *(ptr + 1); } ptr += 2; blocklength -= 2; samplespeed = 256000000L / (65536 - tc); // Skip packed or stereo data if ((packtype != 0) || (voicemode != 0)) { ptr += blocklength; } else { done = TRUE; } voicemode = 0; break; case 2 : // Sound continuation block samplespeed = voice->SamplingRate; done = TRUE; break; case 3 : // Silence // Not implimented. ptr += blocklength; break; case 4 : // Marker // Not implimented. ptr += blocklength; break; case 5 : // ASCII string // Not implimented. ptr += blocklength; break; case 6 : // Repeat begin if (voice->LoopEnd == NULL) { voice->LoopCount = *(unsigned short *)ptr; voice->LoopStart = (char *)(ptr + blocklength); } ptr += blocklength; break; case 7 : // Repeat end ptr += blocklength; if (lastblocktype == 6) { voice->LoopCount = 0; } else { if ((voice->LoopCount > 0) && (voice->LoopStart != NULL)) { ptr = (unsigned char *)voice->LoopStart; if (voice->LoopCount < 0xffff) { voice->LoopCount--; if (voice->LoopCount == 0) { voice->LoopStart = NULL; } } } } break; case 8 : // Extended block voice->bits = 8; tc = *(unsigned short *)ptr; packtype = *(ptr + 2); voicemode = *(ptr + 3); ptr += blocklength; break; case 9 : // New sound data block samplespeed = *(unsigned int *)ptr; BitsPerSample = (unsigned)*(ptr + 4); Channels = (unsigned)*(ptr + 5); Format = (unsigned)*(unsigned short *)(ptr + 6); if ((BitsPerSample == 8) && (Channels == 1) && (Format == VOC_8BIT)) { ptr += 12; blocklength -= 12; voice->bits = 8; done = TRUE; } else if ((BitsPerSample == 16) && (Channels == 1) && (Format == VOC_16BIT)) { ptr += 12; blocklength -= 12; voice->bits = 16; done = TRUE; } else { ptr += blocklength; } break; default : // Unknown data. Probably not a VOC file. voice->Playing = FALSE; done = TRUE; break; } lastblocktype = blocktype; } if (voice->Playing) { voice->NextBlock = (char *)(ptr + blocklength); voice->sound = (char *)ptr; voice->SamplingRate = samplespeed; voice->RateScale = (voice->SamplingRate * voice->PitchScale) / MV_MixRate; // Multiply by MixBufferSize - 1 voice->FixedPointBufferSize = (voice->RateScale * MixBufferSize) - voice->RateScale; if (voice->LoopEnd != NULL) { if (blocklength > (unsigned int)voice->LoopEnd) { blocklength = (unsigned int)voice->LoopEnd; } else { voice->LoopEnd = (char *)blocklength; } voice->LoopStart = voice->sound + (unsigned int)voice->LoopStart; voice->LoopEnd = voice->sound + (unsigned int)voice->LoopEnd; voice->LoopSize = voice->LoopEnd - voice->LoopStart; } if (voice->bits == 16) { blocklength /= 2; } voice->position = 0; voice->length = min(blocklength, 0x8000); voice->BlockLength = blocklength - voice->length; voice->length <<= 16; MV_SetVoiceMixMode(voice); return(KeepPlaying); } return(NoMoreData); } /*--------------------------------------------------------------------- Function: MV_GetNextDemandFeedBlock Controls playback of demand fed data. ---------------------------------------------------------------------*/ playbackstatus MV_GetNextDemandFeedBlock(VoiceNode *voice) { if (voice->BlockLength > 0) { voice->position -= voice->length; voice->sound += voice->length >> 16; voice->length = min(voice->BlockLength, 0x8000); voice->BlockLength -= voice->length; voice->length <<= 16; return(KeepPlaying); } if (voice->DemandFeed == NULL) { return(NoMoreData); } voice->position = 0; (voice->DemandFeed)(&voice->sound, &voice->BlockLength); voice->length = min(voice->BlockLength, 0x8000); voice->BlockLength -= voice->length; voice->length <<= 16; if ((voice->length > 0) && (voice->sound != NULL)) { return(KeepPlaying); } return(NoMoreData); } /*--------------------------------------------------------------------- Function: MV_GetNextRawBlock Controls playback of demand fed data. ---------------------------------------------------------------------*/ playbackstatus MV_GetNextRawBlock(VoiceNode *voice) { if (voice->BlockLength <= 0) { if (voice->LoopStart == NULL) { voice->Playing = FALSE; return(NoMoreData); } voice->BlockLength = voice->LoopSize; voice->NextBlock = voice->LoopStart; voice->length = 0; voice->position = 0; } voice->sound = voice->NextBlock; voice->position -= voice->length; voice->length = min(voice->BlockLength, 0x8000); voice->NextBlock += voice->length; if (voice->bits == 16) { voice->NextBlock += voice->length; } voice->BlockLength -= voice->length; voice->length <<= 16; return(KeepPlaying); } /*--------------------------------------------------------------------- Function: MV_GetNextWAVBlock Controls playback of demand fed data. ---------------------------------------------------------------------*/ playbackstatus MV_GetNextWAVBlock(VoiceNode *voice) { if (voice->BlockLength <= 0) { if (voice->LoopStart == NULL) { voice->Playing = FALSE; return(NoMoreData); } voice->BlockLength = voice->LoopSize; voice->NextBlock = voice->LoopStart; voice->length = 0; voice->position = 0; } voice->sound = voice->NextBlock; voice->position -= voice->length; voice->length = min(voice->BlockLength, 0x8000); voice->NextBlock += voice->length; if (voice->bits == 16) { voice->NextBlock += voice->length; } voice->BlockLength -= voice->length; voice->length <<= 16; return(KeepPlaying); } /*--------------------------------------------------------------------- Function: MV_GetNextOGGBlock Controls playback of demand fed data. ---------------------------------------------------------------------*/ void downsample(char *ptr,int size,int factor) { short *pti=(short *)ptr;int i,j,sum; for (i=0;i>factor;i++) { sum=0; for (j=0;j<1<>factor; } } playbackstatus MV_GetNextOGGBlock(VoiceNode *voice) { int sz; int size=0; int section,result; // initprintf("_%d %d, %d\n",voice->callbackval,voice->position,voice->BlockLength); if (voice->BlockLength <= 0) { if (voice->LoopStart == NULL) { // initprintf("END %d\n",voice->callbackval); voice->Playing = FALSE; return(NoMoreData); } // initprintf("repeat 2\n"); voice->BlockLength = voice->LoopSize; voice->length = 0; voice->position = 0; ov_pcm_seek(&voice->OGGstream.oggStream,0); } voice->position -= voice->length; sz=voice->length = min(voice->BlockLength, 0x8000); voice->BlockLength -= voice->length; voice->length <<= 16; sz<<=voice->downsample+1; while (sizeOGGstream.oggStream,voice->bufsnd+(size>>voice->downsample),sz-size,0,2,1,§ion); if (result> 0) { downsample(voice->bufsnd+(size>>voice->downsample),result,voice->downsample); size+=result; } else if (result==0) { // initprintf("!repeat %d\n",voice->callbackval); voice->BlockLength=0; voice->length=size<<16;break; } else { initprintf("#%d\n",result); break; } } voice->sound=voice->bufsnd; return(KeepPlaying); } /*--------------------------------------------------------------------- Function: MV_ServiceRecord Starts recording of the waiting buffer. ---------------------------------------------------------------------*/ #if 0 static void MV_ServiceRecord(void) { if (MV_RecordFunc) { MV_RecordFunc(MV_MixBuffer[ 0 ] + MV_MixPage * MixBufferSize, MixBufferSize); } // Toggle which buffer we'll mix next MV_MixPage++; if (MV_MixPage >= NumberOfBuffers) { MV_MixPage = 0; } } #endif /*--------------------------------------------------------------------- Function: MV_GetVoice Locates the voice with the specified handle. ---------------------------------------------------------------------*/ VoiceNode *MV_GetVoice(int handle) { VoiceNode *voice; unsigned flags; flags = DisableInterrupts(); for (voice = VoiceList.next; voice != &VoiceList; voice = voice->next) { if (handle == voice->handle) { break; } } RestoreInterrupts(flags); if (voice == &VoiceList) { MV_SetErrorCode(MV_VoiceNotFound); voice = NULL; } return(voice); } /*--------------------------------------------------------------------- Function: MV_VoicePlaying Checks if the voice associated with the specified handle is playing. ---------------------------------------------------------------------*/ int MV_VoicePlaying(int handle) { VoiceNode *voice; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(FALSE); } voice = MV_GetVoice(handle); if (voice == NULL) { return(FALSE); } return(TRUE); } /*--------------------------------------------------------------------- Function: MV_KillAllVoices Stops output of all currently active voices. ---------------------------------------------------------------------*/ int MV_KillAllVoices(void) { if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } // Remove all the voices from the list while (VoiceList.next != &VoiceList) { MV_Kill(VoiceList.next->handle); } return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_Kill Stops output of the voice associated with the specified handle. ---------------------------------------------------------------------*/ int MV_Kill(int handle) { VoiceNode *voice; unsigned flags; unsigned int callbackval; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } flags = DisableInterrupts(); voice = MV_GetVoice(handle); if (voice == NULL) { RestoreInterrupts(flags); MV_SetErrorCode(MV_VoiceNotFound); return(MV_Error); } callbackval = voice->callbackval; MV_StopVoice(voice); RestoreInterrupts(flags); if (MV_CallBackFunc) { MV_CallBackFunc(callbackval); } return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_VoicesPlaying Determines the number of currently active voices. ---------------------------------------------------------------------*/ int MV_VoicesPlaying(void) { VoiceNode *voice; int NumVoices = 0; unsigned flags; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(0); } flags = DisableInterrupts(); for (voice = VoiceList.next; voice != &VoiceList; voice = voice->next) { NumVoices++; } RestoreInterrupts(flags); return(NumVoices); } /*--------------------------------------------------------------------- Function: MV_AllocVoice Retrieve an inactive or lower priority voice for output. ---------------------------------------------------------------------*/ VoiceNode *MV_AllocVoice(int priority) { VoiceNode *voice; VoiceNode *node; unsigned flags; //return(NULL); if (MV_Recording) { return(NULL); } flags = DisableInterrupts(); // Check if we have any free voices if (LL_Empty(&VoicePool, next, prev)) { // check if we have a higher priority than a voice that is playing. voice = VoiceList.next; for (node = voice->next; node != &VoiceList; node = node->next) { if (node->priority < voice->priority) { voice = node; } } if (priority >= voice->priority) { MV_Kill(voice->handle); } } // Check if any voices are in the voice pool if (LL_Empty(&VoicePool, next, prev)) { // No free voices RestoreInterrupts(flags); return(NULL); } voice = VoicePool.next; LL_Remove(voice, next, prev); RestoreInterrupts(flags); // Find a free voice handle do { MV_VoiceHandle++; if (MV_VoiceHandle < MV_MinVoiceHandle) { MV_VoiceHandle = MV_MinVoiceHandle; } } while (MV_VoicePlaying(MV_VoiceHandle)); voice->handle = MV_VoiceHandle; return(voice); } /*--------------------------------------------------------------------- Function: MV_VoiceAvailable Checks if a voice can be play at the specified priority. ---------------------------------------------------------------------*/ int MV_VoiceAvailable(int priority) { VoiceNode *voice; VoiceNode *node; unsigned flags; // Check if we have any free voices if (!LL_Empty(&VoicePool, next, prev)) { return(TRUE); } flags = DisableInterrupts(); // check if we have a higher priority than a voice that is playing. voice = VoiceList.next; for (node = VoiceList.next; node != &VoiceList; node = node->next) { if (node->priority < voice->priority) { voice = node; } } RestoreInterrupts(flags); if ((voice != &VoiceList) && (priority >= voice->priority)) { return(TRUE); } return(FALSE); } /*--------------------------------------------------------------------- Function: MV_SetVoicePitch Sets the pitch for the specified voice. ---------------------------------------------------------------------*/ void MV_SetVoicePitch(VoiceNode *voice, unsigned int rate, int pitchoffset) { voice->SamplingRate = rate; voice->PitchScale = PITCH_GetScale(pitchoffset); voice->RateScale = (rate * voice->PitchScale) / MV_MixRate; // Multiply by MixBufferSize - 1 voice->FixedPointBufferSize = (voice->RateScale * MixBufferSize) - voice->RateScale; } /*--------------------------------------------------------------------- Function: MV_SetPitch Sets the pitch for the voice associated with the specified handle. ---------------------------------------------------------------------*/ int MV_SetPitch(int handle, int pitchoffset) { VoiceNode *voice; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } voice = MV_GetVoice(handle); if (voice == NULL) { MV_SetErrorCode(MV_VoiceNotFound); return(MV_Error); } MV_SetVoicePitch(voice, voice->SamplingRate, pitchoffset); return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_SetFrequency Sets the frequency for the voice associated with the specified handle. ---------------------------------------------------------------------*/ int MV_SetFrequency(int handle, int frequency) { VoiceNode *voice; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } voice = MV_GetVoice(handle); if (voice == NULL) { MV_SetErrorCode(MV_VoiceNotFound); return(MV_Error); } MV_SetVoicePitch(voice, frequency, 0); return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_GetVolumeTable Returns a pointer to the volume table associated with the specified volume. ---------------------------------------------------------------------*/ static short *MV_GetVolumeTable(int vol) { int volume; short *table; volume = MIX_VOLUME(vol); table = (short*)&MV_VolumeTable[ volume ]; return(table); } /*--------------------------------------------------------------------- Function: MV_SetVoiceMixMode Selects which method should be used to mix the voice. ---------------------------------------------------------------------*/ static void MV_SetVoiceMixMode(VoiceNode *voice) { unsigned flags; int test; flags = DisableInterrupts(); test = T_DEFAULT; if (MV_Bits == 8) { test |= T_8BITS; } if (voice->bits == 16) { test |= T_16BITSOURCE; } if (MV_Channels == 1) { test |= T_MONO; } else { if (IS_QUIET(voice->RightVolume)) { test |= T_RIGHTQUIET; } else if (IS_QUIET(voice->LeftVolume)) { test |= T_LEFTQUIET; } } // Default case voice->mix = MV_Mix8BitMono; switch (test) { case T_8BITS | T_MONO | T_16BITSOURCE : voice->mix = MV_Mix8BitMono16; break; case T_8BITS | T_MONO : voice->mix = MV_Mix8BitMono; break; case T_8BITS | T_16BITSOURCE | T_LEFTQUIET : MV_LeftVolume = MV_RightVolume; voice->mix = MV_Mix8BitMono16; break; case T_8BITS | T_LEFTQUIET : MV_LeftVolume = MV_RightVolume; voice->mix = MV_Mix8BitMono; break; case T_8BITS | T_16BITSOURCE | T_RIGHTQUIET : voice->mix = MV_Mix8BitMono16; break; case T_8BITS | T_RIGHTQUIET : voice->mix = MV_Mix8BitMono; break; case T_8BITS | T_16BITSOURCE : voice->mix = MV_Mix8BitStereo16; break; case T_8BITS : voice->mix = MV_Mix8BitStereo; break; case T_MONO | T_16BITSOURCE : voice->mix = MV_Mix16BitMono16; break; case T_MONO : voice->mix = MV_Mix16BitMono; break; case T_16BITSOURCE | T_LEFTQUIET : MV_LeftVolume = MV_RightVolume; voice->mix = MV_Mix16BitMono16; break; case T_LEFTQUIET : MV_LeftVolume = MV_RightVolume; voice->mix = MV_Mix16BitMono; break; case T_16BITSOURCE | T_RIGHTQUIET : voice->mix = MV_Mix16BitMono16; break; case T_RIGHTQUIET : voice->mix = MV_Mix16BitMono; break; case T_16BITSOURCE : voice->mix = MV_Mix16BitStereo16; break; case T_SIXTEENBIT_STEREO : voice->mix = MV_Mix16BitStereo; break; default : voice->mix = MV_Mix8BitMono; } RestoreInterrupts(flags); } /*--------------------------------------------------------------------- Function: MV_SetVoiceVolume Sets the stereo and mono volume level of the voice associated with the specified handle. ---------------------------------------------------------------------*/ void MV_SetVoiceVolume(VoiceNode *voice, int vol, int left, int right) { if (MV_Channels == 1) { left = vol; right = vol; } if (MV_SwapLeftRight) { // SBPro uses reversed panning voice->LeftVolume = MV_GetVolumeTable(right); voice->RightVolume = MV_GetVolumeTable(left); } else { voice->LeftVolume = MV_GetVolumeTable(left); voice->RightVolume = MV_GetVolumeTable(right); } MV_SetVoiceMixMode(voice); } /*--------------------------------------------------------------------- Function: MV_EndLooping Stops the voice associated with the specified handle from looping without stoping the sound. ---------------------------------------------------------------------*/ int MV_EndLooping(int handle) { VoiceNode *voice; unsigned flags; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } flags = DisableInterrupts(); voice = MV_GetVoice(handle); if (voice == NULL) { RestoreInterrupts(flags); MV_SetErrorCode(MV_VoiceNotFound); return(MV_Warning); } voice->LoopCount = 0; voice->LoopStart = NULL; voice->LoopEnd = NULL; RestoreInterrupts(flags); return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_SetPan Sets the stereo and mono volume level of the voice associated with the specified handle. ---------------------------------------------------------------------*/ int MV_SetPan(int handle, int vol, int left, int right) { VoiceNode *voice; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } voice = MV_GetVoice(handle); if (voice == NULL) { MV_SetErrorCode(MV_VoiceNotFound); return(MV_Warning); } MV_SetVoiceVolume(voice, vol, left, right); return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_Pan3D Set the angle and distance from the listener of the voice associated with the specified handle. ---------------------------------------------------------------------*/ int MV_Pan3D(int handle, int angle, int distance) { int left; int right; int mid; int volume; int status; if (distance < 0) { distance = -distance; angle += MV_NumPanPositions / 2; } volume = MIX_VOLUME(distance); // Ensure angle is within 0 - 31 angle &= MV_MaxPanPosition; left = MV_PanTable[ angle ][ volume ].left; right = MV_PanTable[ angle ][ volume ].right; mid = max(0, 255 - distance); status = MV_SetPan(handle, mid, left, right); return(status); } /*--------------------------------------------------------------------- Function: MV_SetReverb Sets the level of reverb to add to mix. ---------------------------------------------------------------------*/ void MV_SetReverb(int reverb) { MV_ReverbLevel = MIX_VOLUME(reverb); MV_ReverbTable = &MV_VolumeTable[ MV_ReverbLevel ]; } /*--------------------------------------------------------------------- Function: MV_SetFastReverb Sets the level of reverb to add to mix. ---------------------------------------------------------------------*/ void MV_SetFastReverb(int reverb) { MV_ReverbLevel = max(0, min(16, reverb)); MV_ReverbTable = NULL; } /*--------------------------------------------------------------------- Function: MV_GetMaxReverbDelay Returns the maximum delay time for reverb. ---------------------------------------------------------------------*/ int MV_GetMaxReverbDelay(void) { int maxdelay; maxdelay = MixBufferSize * MV_NumberOfBuffers; return maxdelay; } /*--------------------------------------------------------------------- Function: MV_GetReverbDelay Returns the current delay time for reverb. ---------------------------------------------------------------------*/ int MV_GetReverbDelay(void) { return MV_ReverbDelay / MV_SampleSize; } /*--------------------------------------------------------------------- Function: MV_SetReverbDelay Sets the delay level of reverb to add to mix. ---------------------------------------------------------------------*/ void MV_SetReverbDelay(int delay) { int maxdelay; maxdelay = MV_GetMaxReverbDelay(); MV_ReverbDelay = max((signed)MixBufferSize, min(delay, maxdelay)); MV_ReverbDelay *= MV_SampleSize; } /*--------------------------------------------------------------------- Function: MV_SetMixMode Prepares Multivoc to play stereo of mono digitized sounds. ---------------------------------------------------------------------*/ int MV_SetMixMode(int numchannels, int samplebits) { int mode; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } mode = 0; if (numchannels == 2) { mode |= STEREO; } if (samplebits == 16) { mode |= SIXTEEN_BIT; } #if defined(_WIN32) MV_MixMode = DSOUND_SetMixMode(mode); #else MV_MixMode = mode; #endif MV_Channels = 1; if (MV_MixMode & STEREO) { MV_Channels = 2; } MV_Bits = 8; if (MV_MixMode & SIXTEEN_BIT) { MV_Bits = 16; } MV_BuffShift = 7 + MV_Channels; MV_SampleSize = sizeof(MONO8) * MV_Channels; if (MV_Bits == 8) { MV_Silence = SILENCE_8BIT; } else { MV_Silence = SILENCE_16BIT; MV_BuffShift += 1; MV_SampleSize *= 2; } MV_BufferSize = MixBufferSize * MV_SampleSize; MV_NumberOfBuffers = TotalBufferSize / MV_BufferSize; MV_BufferLength = TotalBufferSize; MV_RightChannelOffset = MV_SampleSize / 2; return(MV_Ok); } // --------------------------------------------------------------------- // OGG file // --------------------------------------------------------------------- ov_callbacks cb; size_t ReadOgg(void *ptr, size_t size1, size_t nmemb, void *datasource) { sounddef *d=(sounddef *)datasource; size1*=nmemb; if (d->pos>=d->size)return 0; if (d->pos+size1>=d->size)size1=d->size-d->pos; Bmemcpy(ptr,(d->ptrsnd+d->pos),size1); d->pos+=size1; return size1; } int SeekOgg(void *datasource,ogg_int64_t offset,int whence) { sounddef *d=(sounddef *)datasource; switch (whence) { case SEEK_SET: whence=offset;break; case SEEK_CUR: whence=d->pos+offset;break; case SEEK_END: whence=d->size-offset-1;break; default: return -1; } if (whence>=(int)d->size||whence<0)return -1; d->pos=whence; return 0; } long TellOgg(void *datasource) { sounddef *d=(sounddef *)datasource; return d->pos; } int CloseOgg(void *datasource) { return 0; } /*--------------------------------------------------------------------- Function: MV_StartPlayback Starts the sound playback engine. ---------------------------------------------------------------------*/ int MV_StartPlayback(void) { int status; int buffer; cb.close_func=CloseOgg; cb.read_func =ReadOgg; cb.seek_func =SeekOgg; cb.tell_func =TellOgg; // Initialize the buffers ClearBuffer_DW(MV_MixBuffer[ 0 ], MV_Silence, TotalBufferSize >> 2); for (buffer = 0; buffer < MV_NumberOfBuffers; buffer++) { MV_BufferEmpty[ buffer ] = TRUE; } // Set the mix buffer variables MV_MixPage = 1; MV_MixFunction = MV_Mix; #if defined(_WIN32) MV_MixRate = MV_RequestedMixRate; // Start playback status = DSOUND_BeginBufferedPlayback(MV_MixBuffer[ 0 ], MV_ServiceVoc, TotalBufferSize, MV_NumberOfBuffers); if (status != DSOUND_Ok) { MV_SetErrorCode(MV_BlasterError); return(MV_Error); } #else status = DSL_BeginBufferedPlayback(MV_MixBuffer[ 0 ], TotalBufferSize, MV_NumberOfBuffers, MV_RequestedMixRate, MV_MixMode, (void *)MV_ServiceVoc); if (status != DSL_Ok) { MV_SetErrorCode(MV_BlasterError); return(MV_Error); } MV_MixRate = DSL_GetPlaybackRate(); #endif return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_StopPlayback Stops the sound playback engine. ---------------------------------------------------------------------*/ void MV_StopPlayback(void) { VoiceNode *voice; VoiceNode *next; unsigned flags; // Stop sound playback #if defined(_WIN32) DSOUND_StopPlayback(); #else DSL_StopPlayback(); #endif // Make sure all callbacks are done. flags = DisableInterrupts(); for (voice = VoiceList.next; voice != &VoiceList; voice = next) { next = voice->next; MV_StopVoice(voice); if (MV_CallBackFunc) { MV_CallBackFunc(voice->callbackval); } } RestoreInterrupts(flags); } #if 0 /*--------------------------------------------------------------------- Function: MV_StartRecording Starts the sound recording engine. ---------------------------------------------------------------------*/ int MV_StartRecording(int MixRate, void(*function)(char *ptr, int length)) { int status; switch (MV_SoundCard) { case SoundBlaster : break; default : MV_SetErrorCode(MV_UnsupportedCard); return(MV_Error); break; } if (function == NULL) { MV_SetErrorCode(MV_NullRecordFunction); return(MV_Error); } MV_StopPlayback(); // Initialize the buffers ClearBuffer_DW(MV_MixBuffer[ 0 ], SILENCE_8BIT, TotalBufferSize >> 2); // Set the mix buffer variables MV_MixPage = 0; MV_RecordFunc = function; // Start playback switch (MV_SoundCard) { case SoundBlaster : status = BLASTER_BeginBufferedRecord(MV_MixBuffer[ 0 ], TotalBufferSize, NumberOfBuffers, MixRate, MONO_8BIT, MV_ServiceRecord); if (status != BLASTER_Ok) { MV_SetErrorCode(MV_BlasterError); return(MV_Error); } break; } MV_Recording = TRUE; return(MV_Ok); } #endif #if 0 /*--------------------------------------------------------------------- Function: MV_StopRecord Stops the sound record engine. ---------------------------------------------------------------------*/ void MV_StopRecord(void) { // Stop sound playback switch (MV_SoundCard) { case SoundBlaster : BLASTER_StopPlayback(); break; } MV_Recording = FALSE; MV_StartPlayback(); } #endif /*--------------------------------------------------------------------- Function: MV_StartDemandFeedPlayback Plays a digitized sound from a user controlled buffering system. ---------------------------------------------------------------------*/ int MV_StartDemandFeedPlayback(void(*function)(char **ptr, unsigned int *length), int rate, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { VoiceNode *voice; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } // Request a voice from the voice pool voice = MV_AllocVoice(priority); if (voice == NULL) { MV_SetErrorCode(MV_NoVoices); return(MV_Error); } voice->wavetype = DemandFeed; voice->bits = 8; voice->GetSound = MV_GetNextDemandFeedBlock; voice->NextBlock = NULL; voice->DemandFeed = function; voice->LoopStart = NULL; voice->LoopCount = 0; voice->BlockLength = 0; voice->position = 0; voice->sound = NULL; voice->length = 0; voice->BlockLength = 0; voice->Playing = TRUE; voice->next = NULL; voice->prev = NULL; voice->priority = priority; voice->callbackval = callbackval; MV_SetVoicePitch(voice, rate, pitchoffset); MV_SetVoiceVolume(voice, vol, left, right); MV_PlayVoice(voice); return(voice->handle); } /*--------------------------------------------------------------------- Function: MV_PlayRaw Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayRaw(char *ptr, unsigned int length, unsigned rate, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { int status; status = MV_PlayLoopedRaw(ptr, length, NULL, NULL, rate, pitchoffset, vol, left, right, priority, callbackval); return(status); } /*--------------------------------------------------------------------- Function: MV_PlayLoopedRaw Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayLoopedRaw(char *ptr, int length, char *loopstart, char *loopend, unsigned rate, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { VoiceNode *voice; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } // Request a voice from the voice pool voice = MV_AllocVoice(priority); if (voice == NULL) { MV_SetErrorCode(MV_NoVoices); return(MV_Error); } voice->wavetype = Raw; voice->bits = 8; voice->GetSound = MV_GetNextRawBlock; voice->Playing = TRUE; voice->NextBlock = ptr; voice->position = 0; voice->BlockLength = length; voice->length = 0; voice->next = NULL; voice->prev = NULL; voice->priority = priority; voice->callbackval = callbackval; voice->LoopStart = loopstart; voice->LoopEnd = loopend; voice->LoopSize = (voice->LoopEnd - voice->LoopStart) + 1; MV_SetVoicePitch(voice, rate, pitchoffset); MV_SetVoiceVolume(voice, vol, left, right); MV_PlayVoice(voice); return(voice->handle); } /*--------------------------------------------------------------------- Function: MV_PlayWAV Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayWAV(char *ptr, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { int status; status = MV_PlayLoopedWAV(ptr, -1, -1, pitchoffset, vol, left, right, priority, callbackval); if (status < MV_Ok) { sprintf(tempbuf, "Sound error %d: %s\n",callbackval, FX_ErrorString(FX_Error)); initprintf(tempbuf); } return(status); } /*--------------------------------------------------------------------- Function: MV_PlayWAV3D Begin playback of sound data at specified angle and distance from listener. ---------------------------------------------------------------------*/ int MV_PlayWAV3D(char *ptr, int pitchoffset, int angle, int distance, int priority, unsigned int callbackval) { int left; int right; int mid; int volume; int status; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } if (distance < 0) { distance = -distance; angle += MV_NumPanPositions / 2; } volume = MIX_VOLUME(distance); // Ensure angle is within 0 - 31 angle &= MV_MaxPanPosition; left = MV_PanTable[ angle ][ volume ].left; right = MV_PanTable[ angle ][ volume ].right; mid = max(0, 255 - distance); status = MV_PlayWAV(ptr, pitchoffset, mid, left, right, priority, callbackval); return(status); } /*--------------------------------------------------------------------- Function: MV_PlayLoopedWAV Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayLoopedWAV(char *ptr, int loopstart, int loopend, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { riff_header *riff; format_header *format; data_header *data; VoiceNode *voice; int length; int absloopend; int absloopstart; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } riff = (riff_header *)ptr; if ((strncmp(riff->RIFF, "RIFF", 4) != 0) || (strncmp(riff->WAVE, "WAVE", 4) != 0) || (strncmp(riff->fmt, "fmt ", 4) != 0)) { MV_SetErrorCode(MV_InvalidWAVFile); return(MV_Error); } format = (format_header *)(riff + 1); data = (data_header *)(((char *)format) + riff->format_size); // Check if it's PCM data. if (format->wFormatTag != 1) { MV_SetErrorCode(MV_InvalidWAVFile); return(MV_Error); } if (format->nChannels != 1) { MV_SetErrorCode(MV_InvalidWAVFile); return(MV_Error); } if ((format->nBitsPerSample != 8) && (format->nBitsPerSample != 16)) { MV_SetErrorCode(MV_InvalidWAVFile); return(MV_Error); } if (strncmp((char *)data->DATA, "data", 4) != 0) { MV_SetErrorCode(MV_InvalidWAVFile); return(MV_Error); } // Request a voice from the voice pool voice = MV_AllocVoice(priority); if (voice == NULL) { MV_SetErrorCode(MV_NoVoices); return(MV_Error); } voice->wavetype = WAV; voice->bits = format->nBitsPerSample; voice->GetSound = MV_GetNextWAVBlock; length = data->size; absloopstart = loopstart; absloopend = loopend; if (voice->bits == 16) { loopstart *= 2; data->size &= ~1; loopend *= 2; length /= 2; } loopend = min(loopend, (signed)data->size); absloopend = min(absloopend, length); voice->Playing = TRUE; voice->DemandFeed = NULL; voice->LoopStart = NULL; voice->LoopCount = 0; voice->position = 0; voice->length = 0; voice->BlockLength = absloopend; voice->NextBlock = (char *)(data + 1); voice->next = NULL; voice->prev = NULL; voice->priority = priority; voice->callbackval = callbackval; voice->LoopStart = voice->NextBlock + loopstart; voice->LoopEnd = voice->NextBlock + loopend; voice->LoopSize = absloopend - absloopstart; if ((loopstart >= (signed)data->size) || (loopstart < 0)) { voice->LoopStart = NULL; voice->LoopEnd = NULL; voice->BlockLength = length; } MV_SetVoicePitch(voice, format->nSamplesPerSec, pitchoffset); MV_SetVoiceVolume(voice, vol, left, right); MV_PlayVoice(voice); return(voice->handle); } /*--------------------------------------------------------------------- Function: MV_PlayVOC3D Begin playback of sound data at specified angle and distance from listener. ---------------------------------------------------------------------*/ int MV_PlayVOC3D(char *ptr, int pitchoffset, int angle, int distance, int priority, unsigned int callbackval) { int left; int right; int mid; int volume; int status; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } if (distance < 0) { distance = -distance; angle += MV_NumPanPositions / 2; } volume = MIX_VOLUME(distance); // Ensure angle is within 0 - 31 angle &= MV_MaxPanPosition; left = MV_PanTable[ angle ][ volume ].left; right = MV_PanTable[ angle ][ volume ].right; mid = max(0, 255 - distance); status = MV_PlayVOC(ptr, pitchoffset, mid, left, right, priority, callbackval); return(status); } /*--------------------------------------------------------------------- Function: MV_PlayVOC Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayVOC(char *ptr, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { int status; status = MV_PlayLoopedVOC(ptr, -1, -1, pitchoffset, vol, left, right, priority, callbackval); if (status < MV_Ok) { sprintf(tempbuf, "Sound error %d: %s\n",callbackval, FX_ErrorString(FX_Error)); initprintf(tempbuf); } return(status); } /*--------------------------------------------------------------------- Function: MV_PlayLoopedVOC Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayLoopedVOC(char *ptr, int loopstart, int loopend, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { VoiceNode *voice; int status; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } // Make sure it's a valid VOC file. status = strncmp(ptr, "Creative Voice File", 19); if (status != 0) { MV_SetErrorCode(MV_InvalidVOCFile); return(MV_Error); } // Request a voice from the voice pool voice = MV_AllocVoice(priority); if (voice == NULL) { MV_SetErrorCode(MV_NoVoices); return(MV_Error); } voice->wavetype = VOC; voice->bits = 8; voice->GetSound = MV_GetNextVOCBlock; voice->NextBlock = ptr + *(unsigned short int *)(ptr + 0x14); voice->DemandFeed = NULL; voice->LoopStart = NULL; voice->LoopCount = 0; voice->BlockLength = 0; voice->PitchScale = PITCH_GetScale(pitchoffset); voice->length = 0; voice->next = NULL; voice->prev = NULL; voice->priority = priority; voice->callbackval = callbackval; voice->LoopStart = (char *)loopstart; voice->LoopEnd = (char *)loopend; voice->LoopSize = loopend - loopstart + 1; if (loopstart < 0) { voice->LoopStart = NULL; voice->LoopEnd = NULL; } MV_SetVoiceVolume(voice, vol, left, right); MV_PlayVoice(voice); return(voice->handle); } /*--------------------------------------------------------------------- Function: MV_PlayLoopedOGG Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ VoiceNode *voice; int MV_PlayLoopedOGG(char *ptr, int loopstart, int loopend, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { vorbis_info *vorbisInfo; int length; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } // Request a voice from the voice pool voice = MV_AllocVoice(priority); if (voice == NULL) { MV_SetErrorCode(MV_NoVoices); return(MV_Error); } voice->OGGstream.pos=0; voice->OGGstream.ptrsnd=ptr; voice->OGGstream.size=g_sounds[callbackval].soundsiz; voice->downsample=0; if (ov_open_callbacks(&voice->OGGstream,&voice->OGGstream.oggStream,0,0,cb)<0) { MV_SetErrorCode(MV_InvalidOGGFile); return(MV_Error); } vorbisInfo=ov_info(&voice->OGGstream.oggStream,-1); if (!vorbisInfo) { MV_SetErrorCode(MV_InvalidOGGFile); return(MV_Error); } while ((uint64)(vorbisInfo->rate)/(1<downsample)*PITCH_GetScale(pitchoffset)/0x1000000/0x100) voice->downsample++; length=ov_pcm_total(&voice->OGGstream.oggStream,0); if (!length)length=0xffffff; loopend=length=length>>voice->downsample; voice->wavetype = OGG; voice->bits = 16; voice->GetSound = MV_GetNextOGGBlock; voice->Playing = TRUE; voice->DemandFeed = NULL; voice->LoopStart = NULL; voice->LoopCount = 0; voice->position = 0; voice->length = 0; voice->BlockLength = loopend; voice->NextBlock = NULL; voice->next = NULL; voice->prev = NULL; voice->priority = priority; voice->callbackval = callbackval; voice->LoopStart = voice->NextBlock + loopstart+1; voice->LoopEnd = voice->NextBlock + loopend+1; voice->LoopSize = loopend - loopstart; if (loopstart < 0) { voice->LoopStart = NULL; voice->LoopEnd = NULL; voice->BlockLength = length; } MV_SetVoicePitch(voice, vorbisInfo->rate>>voice->downsample, pitchoffset); if (vorbisInfo->channels==2)voice->downsample++; MV_SetVoiceVolume(voice, vol, left, right); MV_PlayVoice(voice); return(voice->handle); } /*--------------------------------------------------------------------- Function: MV_PlayOGG Begin playback of sound data with the given sound levels and priority. ---------------------------------------------------------------------*/ int MV_PlayOGG(char *ptr, int pitchoffset, int vol, int left, int right, int priority, unsigned int callbackval) { int status; status = MV_PlayLoopedOGG(ptr, -1, -1, pitchoffset, vol, left, right, priority, callbackval); if (status < MV_Ok) { sprintf(tempbuf, "Sound error %d: %s\n",callbackval, FX_ErrorString(FX_Error)); initprintf(tempbuf); } return(status); } /*--------------------------------------------------------------------- Function: MV_PlayOGG3D Begin playback of sound data at specified angle and distance from listener. ---------------------------------------------------------------------*/ int MV_PlayOGG3D(char *ptr, int pitchoffset, int angle, int distance, int priority, unsigned int callbackval) { int left; int right; int mid; int volume; int status; if (!MV_Installed) { MV_SetErrorCode(MV_NotInstalled); return(MV_Error); } if (distance < 0) { distance = -distance; angle += MV_NumPanPositions / 2; } volume = MIX_VOLUME(distance); // Ensure angle is within 0 - 31 angle &= MV_MaxPanPosition; left = MV_PanTable[ angle ][ volume ].left; right = MV_PanTable[ angle ][ volume ].right; mid = max(0, 255 - distance); status = MV_PlayOGG(ptr, pitchoffset, mid, left, right, priority, callbackval); return(status); } /*--------------------------------------------------------------------- Function: MV_CreateVolumeTable Create the table used to convert sound data to a specific volume level. ---------------------------------------------------------------------*/ void MV_CreateVolumeTable(int index, int volume, int MaxVolume) { int val; int level; int i; level = (volume * MaxVolume) / MV_MaxTotalVolume; if (MV_Bits == 16) { for (i = 0; i < 65536; i += 256) { val = i - 0x8000; val *= level; val /= MV_MaxVolume; MV_VolumeTable[ index ][ i / 256 ] = val; } } else { for (i = 0; i < 256; i++) { val = i - 0x80; val *= level; val /= MV_MaxVolume; MV_VolumeTable[ volume ][ i ] = val; } } } /*--------------------------------------------------------------------- Function: MV_CalcVolume Create the table used to convert sound data to a specific volume level. ---------------------------------------------------------------------*/ void MV_CalcVolume(int MaxVolume) { int volume; for (volume = 0; volume < 128; volume++) { MV_HarshClipTable[ volume ] = 0; MV_HarshClipTable[ volume + 384 ] = 255; } for (volume = 0; volume < 256; volume++) { MV_HarshClipTable[ volume + 128 ] = volume; } // For each volume level, create a translation table with the // appropriate volume calculated. for (volume = 0; volume <= MV_MaxVolume; volume++) { MV_CreateVolumeTable(volume, volume, MaxVolume); } } /*--------------------------------------------------------------------- Function: MV_CalcPanTable Create the table used to determine the stereo volume level of a sound located at a specific angle and distance from the listener. ---------------------------------------------------------------------*/ void MV_CalcPanTable(void) { int level; int angle; int distance; int HalfAngle; int ramp; HalfAngle = (MV_NumPanPositions / 2); for (distance = 0; distance <= MV_MaxVolume; distance++) { level = (255 * (MV_MaxVolume - distance)) / MV_MaxVolume; for (angle = 0; angle <= HalfAngle / 2; angle++) { ramp = level - ((level * angle) / (MV_NumPanPositions / 4)); MV_PanTable[ angle ][ distance ].left = ramp; MV_PanTable[ HalfAngle - angle ][ distance ].left = ramp; MV_PanTable[ HalfAngle + angle ][ distance ].left = level; MV_PanTable[ MV_MaxPanPosition - angle ][ distance ].left = level; MV_PanTable[ angle ][ distance ].right = level; MV_PanTable[ HalfAngle - angle ][ distance ].right = level; MV_PanTable[ HalfAngle + angle ][ distance ].right = ramp; MV_PanTable[ MV_MaxPanPosition - angle ][ distance ].right = ramp; } } } /*--------------------------------------------------------------------- Function: MV_SetVolume Sets the volume of digitized sound playback. ---------------------------------------------------------------------*/ void MV_SetVolume(int volume) { volume = max(0, volume); volume = min(volume, MV_MaxTotalVolume); MV_TotalVolume = volume; // Calculate volume table MV_CalcVolume(volume); } /*--------------------------------------------------------------------- Function: MV_GetVolume Returns the volume of digitized sound playback. ---------------------------------------------------------------------*/ int MV_GetVolume(void) { return(MV_TotalVolume); } /*--------------------------------------------------------------------- Function: MV_SetCallBack Set the function to call when a voice stops. ---------------------------------------------------------------------*/ void MV_SetCallBack(void(*function)(unsigned int)) { MV_CallBackFunc = function; } /*--------------------------------------------------------------------- Function: MV_SetReverseStereo Set the orientation of the left and right channels. ---------------------------------------------------------------------*/ void MV_SetReverseStereo(int setting) { MV_SwapLeftRight = setting; } /*--------------------------------------------------------------------- Function: MV_GetReverseStereo Returns the orientation of the left and right channels. ---------------------------------------------------------------------*/ int MV_GetReverseStereo(void) { return(MV_SwapLeftRight); } #if 0 /*--------------------------------------------------------------------- Function: MV_TestPlayback Checks if playback has started. ---------------------------------------------------------------------*/ int MV_TestPlayback(void) { unsigned flags; int time; int start; int status; int pos; flags = DisableInterrupts(); _enable(); status = MV_Error; start = MV_MixPage; time = clock() + CLOCKS_PER_SEC * 2; while (clock() < time) { if (MV_MixPage != start) { status = MV_Ok; } } RestoreInterrupts(flags); if (status != MV_Ok) { // Just in case an error doesn't get reported MV_SetErrorCode(MV_DMAFailure); switch (MV_SoundCard) { case SoundBlaster : pos = BLASTER_GetCurrentPos(); break; default : MV_SetErrorCode(MV_UnsupportedCard); pos = -2; break; } if (pos > 0) { MV_SetErrorCode(MV_IrqFailure); } else if (pos == 0) { if (MV_Bits == 16) { MV_SetErrorCode(MV_DMA16Failure); } else { MV_SetErrorCode(MV_DMAFailure); } } } return(status); } #endif int USRHOOKS_GetMem(void **ptr, unsigned int size) { *ptr = malloc(size); if (*ptr == NULL) return(USRHOOKS_Error); return(USRHOOKS_Ok); } int USRHOOKS_FreeMem(void *ptr) { free(ptr); return(USRHOOKS_Ok); } /*--------------------------------------------------------------------- Function: MV_Init Perform the initialization of variables and memory used by Multivoc. ---------------------------------------------------------------------*/ int MV_Init(int soundcard, int MixRate, int Voices, int numchannels, int samplebits) { char *ptr; int status; int buffer; int index; if (MV_Installed) { MV_Shutdown(); } initprintf("Initializing MultiVoc...\n"); MV_SetErrorCode(MV_Ok); MV_TotalMemory = Voices * sizeof(VoiceNode) + sizeof(HARSH_CLIP_TABLE_8); status = USRHOOKS_GetMem((void **)&ptr, MV_TotalMemory); if (status != USRHOOKS_Ok) { MV_SetErrorCode(MV_NoMem); return(MV_Error); } MV_Voices = (VoiceNode *)ptr; MV_HarshClipTable = ptr + (MV_TotalMemory - sizeof(HARSH_CLIP_TABLE_8)); // Set number of voices before calculating volume table MV_MaxVoices = Voices; initprintf(" - Maximum voices: %d\n", MV_MaxVoices); LL_Reset(&VoiceList, next, prev); LL_Reset(&VoicePool, next, prev); for (index = 0; index < Voices; index++) { LL_Add(&VoicePool, &MV_Voices[ index ], next, prev); } // Set the sampling rate MV_RequestedMixRate = MixRate; initprintf(" - Using %d byte mixing buffers\n", MixBufferSize); // Allocate mix buffer within 1st megabyte ptr = (char *)malloc(TotalBufferSize + 8); // FIXME: temporarily fixes bounds error somewhere... if (!ptr) { USRHOOKS_FreeMem(MV_Voices); MV_Voices = NULL; MV_TotalMemory = 0; MV_SetErrorCode(MV_NoMem); return(MV_Error); } MV_MixBufferPtr = ptr; MV_SetReverseStereo(FALSE); // Initialize the sound card #if defined(_WIN32) #ifdef USE_OPENAL if (AL_Init()) { int i; // no AL support so shitcan the ogg definitions for (i=(MAXLEVELS*(MAXVOLUMES+1))-1;i>=0;i--) // +1 volume for "intro", "briefing" music { if (map[i].musicfn1 != NULL) Bfree(map[i].musicfn1); map[i].musicfn1 = NULL; } } #endif status = DSOUND_Init(soundcard, MixRate, numchannels, samplebits, TotalBufferSize); if (status != DSOUND_Ok) { MV_SetErrorCode(MV_BlasterError); } #else status = DSL_Init(); if (status != DSL_Ok) { MV_SetErrorCode(MV_BlasterError); } #endif if (MV_ErrorCode != MV_Ok) { status = MV_ErrorCode; USRHOOKS_FreeMem(MV_Voices); MV_Voices = NULL; MV_TotalMemory = 0; free(ptr); MV_SetErrorCode(status); return(MV_Error); } MV_SoundCard = soundcard; MV_Installed = TRUE; MV_CallBackFunc = NULL; MV_RecordFunc = NULL; MV_Recording = FALSE; MV_ReverbLevel = 0; MV_ReverbTable = NULL; // Set Mixer to play stereo digitized sound MV_SetMixMode(numchannels, samplebits); MV_ReverbDelay = MV_BufferSize * 3; //MV_MixBuffer[ MV_NumberOfBuffers ] = ptr; for (buffer = 0; buffer < MV_NumberOfBuffers; buffer++) { MV_MixBuffer[ buffer ] = ptr; ptr += MV_BufferSize; } // Calculate pan table MV_CalcPanTable(); MV_SetVolume(MV_MaxTotalVolume); // Start the playback engine status = MV_StartPlayback(); if (status != MV_Ok) { // Preserve error code while we shutdown. status = MV_ErrorCode; MV_Shutdown(); MV_SetErrorCode(status); return(MV_Error); } return(MV_Ok); } /*--------------------------------------------------------------------- Function: MV_Shutdown Restore any resources allocated by Multivoc back to the system. ---------------------------------------------------------------------*/ int MV_Shutdown(void) { int buffer; unsigned flags; if (!MV_Installed) { return(MV_Ok); } initprintf("Uninitializing MultiVoc...\n"); flags = DisableInterrupts(); MV_KillAllVoices(); MV_Installed = FALSE; // Stop the sound recording engine if (MV_Recording) { //MV_StopRecord(); } // Stop the sound playback engine MV_StopPlayback(); // Shutdown the sound card #if defined(_WIN32) #ifdef USE_OPENAL AL_Shutdown(); #endif DSOUND_Shutdown(); #else DSL_Shutdown(); #endif RestoreInterrupts(flags); // Free any voices we allocated USRHOOKS_FreeMem(MV_Voices); MV_Voices = NULL; MV_TotalMemory = 0; LL_Reset(&VoiceList, next, prev); LL_Reset(&VoicePool, next, prev); MV_MaxVoices = 1; // Release the descriptor from our mix buffer if (MV_MixBufferPtr) free(MV_MixBufferPtr); MV_MixBufferPtr = NULL; for (buffer = 0; buffer < NumberOfBuffers; buffer++) { MV_MixBuffer[ buffer ] = NULL; } return(MV_Ok); }