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-
- /*************************************************************************/
- /* PlayMono2.c */
- /* Contains code used to play mono samples out of both speakers. */
- /*************************************************************************/
-
- #include <exec/types.h>
- #include <exec/exec.h>
- #include <devices/audio.h>
- #include <dos/dos.h>
- #include <intuition/intuition.h>
- #include <intuition/intuitionbase.h>
- #include <graphics/gfxbase.h>
- #include <stdlib.h>
-
- #include "dsound.h"
- #include "minrexx.h"
-
- #include <proto/intuition.h>
- #include <proto/exec.h>
- #include <proto/dos.h>
-
- extern UBYTE rightAMap[];
- extern UBYTE leftAMap[];
- extern UBYTE eitherAMap[];
- extern UBYTE bothAMap[];
-
- extern UBYTE volume;
- extern UWORD speed;
- extern ULONG bufSize;
-
- extern BOOL readAll;
- extern BOOL loop;
- extern struct Window *window;
-
- extern ULONG signalMask;
-
- extern BOOL rexxAbort;
-
- /*Play a mono sample (or a single channel of a stereo sample) out of */
- /*both speakers simultaneously*/
- void playMonoTwice(BPTR file,channel audioChannel,struct Voice8Header *vhdr,
- ULONG length)
- {
- struct IOAudio *iob1_right,*iob2_right,*iob1_left,*iob2_left;
- struct IOAudio *cur_right,*cur_left,*alt_right,*alt_left;
- extern long arexxSigBit;
- ULONG toRead;
- ULONG sampleSize=length;
- BOOL done=FALSE;
- ULONG amountLeft;
-
- /*Read the entire sample into memory, if the user so specified*/
- if(readAll)
- {
- storeLeft(file,length,bufSize);
- file=0L;
- }
-
- /*Get the first audio channel*/
- iob1_left=GetAudioChannel(bufSize,leftAMap);
- if(iob1_left==NULL)
- {
- WriteMsg("Couldn't create the first stereo buffer\n");
- cleanup(150);
- }
-
- iob1_right=GetAudioChannel(bufSize,rightAMap);
- if(iob1_right==NULL)
- {
- WriteMsg("Couldn't create the second stereo buffer\n");
- cleanup(150);
- }
- FreeMem(iob1_right->ioa_Data,iob1_right->ioa_Length);
- iob1_right->ioa_Data=iob1_left->ioa_Data;
-
- /* If the user didn't specify a volume, get it from the VHDR */
- if(volume==0)
- volume=(vhdr->volume>>10);
-
- /* If the VHDR gave a volume of zero, use maximum volume*/
- if(volume==0)
- volume=64;
-
- /* Get the samples/sec rate (either the rate given by the user, or the*/
- /* rate found in the VHDR) */
- if(speed==0)
- speed=1000000000/(vhdr->samplesPerSec*279);
- else
- speed=1000000000/(speed*279);
-
- InitAudioChannel(iob1_left,volume,speed);
- InitAudioChannel(iob1_right,volume,speed);
-
- /*Get the 2nd audio channel*/
- iob2_left=DuplicateAudioChannel(iob1_left);
-
- if(iob2_left==NULL)
- {
- FreeAudioChannel(iob1_left);
- FreeAudioChannel(iob1_right);
- WriteMsg("Couldn't create the second buffer");
- cleanup(175);
- }
-
- iob2_right=DuplicateAudioChannel(iob1_right);
- if(iob2_right==NULL)
- {
- FreeAudioChannel(iob1_left);
- DeleteDuplication(iob2_left);
- FreeAudioChannel(iob1_right);
- WriteMsg("Couldn't create the second buffer");
- cleanup(175);
- }
- FreeMem(iob2_right->ioa_Data,iob2_right->ioa_Length);
- iob2_right->ioa_Data=iob2_left->ioa_Data;
-
- /* Load the first buffer*/
- toRead=MIN(length,bufSize);
- LoadAudioBuffer(file,iob1_left,toRead);
- iob1_right->ioa_Length=iob1_left->ioa_Length=toRead;
- length-=toRead;
-
- if(length==0 && loop)
- {
- length=sampleSize;
- if(!readAll)
- Seek(file,-sampleSize,OFFSET_CURRENT);
- }
-
- /*Initialize the sample position info*/
- updateSampleInfo(0,sampleSize,vhdr->samplesPerSec);
-
- /*Queue up the play requests*/
- BeginIO((struct IORequest *)iob1_left);
- BeginIO((struct IORequest *)iob1_right);
-
- cur_right=iob2_right;
- cur_left=iob2_left;
- alt_right=iob1_right;
- alt_left=iob1_left;
-
- /*Loop while there's stuff to read*/
- while(!done && !rexxAbort)
- {
- toRead=MIN(length,bufSize);
-
- if(toRead!=0)
- {
- LoadAudioBuffer(file,cur_left,toRead);
- cur_right->ioa_Length=cur_left->ioa_Length=toRead;
- BeginIO((struct IORequest *)cur_left);
- BeginIO((struct IORequest *)cur_right);
- amountLeft=length-=toRead;
-
- if(length==0 && loop)
- {
- length=sampleSize;
- if(!readAll)
- Seek(file,-sampleSize,OFFSET_CURRENT);
- }
- done=FALSE;
- }
- else
- done=TRUE;
-
- /*Wait for the second buffer to finish*/
- if((Wait((1<<alt_right->ioa_Request.io_Message.mn_ReplyPort->mp_SigBit) |
- signalMask | arexxSigBit) & SIGBREAKF_CTRL_C) == SIGBREAKF_CTRL_C)
- done=TRUE;
-
- dispRexxPort();
-
- /*Update the sample position info*/
- updateSampleInfo(sampleSize-amountLeft-toRead,sampleSize,vhdr->samplesPerSec);
-
- /*If we got a message from the window, it is a CLOSEWINDOW message*/
- /*and we're done*/
- if(window!=NULL && GetMsg(window->UserPort)!=NULL)
- {
- done=TRUE;
- }
- swapPointers(&cur_left,&alt_left);
- swapPointers(&cur_right,&alt_right);
- }
-
- /*Restore the buffer lengths, so that FreeAudio() channel, etc., knows*/
- /*how much memory to free*/
- iob1_left->ioa_Length=iob2_left->ioa_Length=bufSize;
- iob1_right->ioa_Length=iob2_right->ioa_Length=bufSize;
-
- iob1_right->ioa_Data=NULL;
- iob2_right->ioa_Data=NULL;
-
- FreeAudioChannel(iob1_left);
- DeleteDuplication(iob2_left);
- FreeAudioChannel(iob1_right);
- DeleteDuplication(iob2_right);
-
- return;
- }
-
- /*End of Play.c*/
-