116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
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#include <stdlib.h>
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#include <string.h>
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#include "sexyal.h"
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#include "convert.h"
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#ifdef WIN32
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#else
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#include "drivers/oss.h"
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#endif
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static uint32_t FtoB(const SexyAL_format *format, uint32_t frames)
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{
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return(frames*format->channels*(format->sampformat>>4));
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}
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/*
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static uint32_t BtoF(const SexyAL_format *format, uint32_t bytes)
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{
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return(bytes / (format->channels * (format->sampformat>>4)));
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}
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*/
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static uint32_t CanWrite(SexyAL_device *device)
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{
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uint32_t bytes,frames;
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#ifdef WIN32
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bytes=SexyALI_DSound_RawCanWrite(device);
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#else
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bytes=SexyALI_OSS_RawCanWrite(device);
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#endif
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frames=bytes / device->format.channels / (device->format.sampformat>>4);
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return(frames);
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}
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static uint32_t Write(SexyAL_device *device, void *data, uint32_t frames)
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{
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uint8_t buffer[2048*4];
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while(frames)
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{
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int32_t tmp;
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tmp=frames;
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if(tmp>2048)
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{
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tmp=2048;
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frames-=2048;
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}
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else frames-=tmp;
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SexiALI_Convert(&device->srcformat, &device->format, buffer, data, tmp);
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//printf("%02x, %02x, %02x\n", device->srcformat.sampformat, device->srcformat.byteorder, device->srcformat.channels);
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//printf("buffer: %d\n",buffer[0]);
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/* FIXME: Return the actual number of frame written. It should always equal
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the number of frames requested to be written, except in cases of sound device
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failures.
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*/
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#ifdef WIN32
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SexyALI_DSound_RawWrite(device,buffer,FtoB(&device->format,tmp));
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#else
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SexyALI_OSS_RawWrite(device,buffer,FtoB(&device->format,tmp));
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#endif
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}
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return(frames);
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}
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static int Close(SexyAL_device *device)
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{
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#ifdef WIN32
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return(SexyALI_DSound_Close(device));
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#else
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return(SexyALI_OSS_Close(device));
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#endif
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}
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int SetConvert(struct __SexyAL_device *device, SexyAL_format *format)
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{
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memcpy(&device->srcformat,format,sizeof(SexyAL_format));
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return(1);
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}
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static SexyAL_device *Open(SexyAL *iface, uint64_t id, SexyAL_format *format, SexyAL_buffering *buffering)
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{
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SexyAL_device *ret;
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#ifdef WIN32
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if(!(ret=SexyALI_DSound_Open(id,format,buffering))) return(0);
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#else
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if(!(ret=SexyALI_OSS_Open(id,format,buffering))) return(0);
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#endif
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ret->Write=Write;
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ret->Close=Close;
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ret->CanWrite=CanWrite;
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ret->SetConvert=SetConvert;
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return(ret);
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}
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void Destroy(SexyAL *iface)
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{
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free(iface);
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}
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void *SexyAL_Init(int version)
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{
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SexyAL *iface;
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if(!version != 1) return(0);
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iface=malloc(sizeof(SexyAL));
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iface->Open=Open;
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iface->Destroy=Destroy;
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return((void *)iface);
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}
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