PlatformAudioOut.cpp File Reference

#include "PlatformAudioOut.h"
#include "../../devices/PAudioOut.h"
#include "../../utility/PEBLPath.h"
#include "../../utility/PError.h"
#include "../../base/Evaluator.h"
#include "portaudio.h"

Go to the source code of this file.

Functions
int	PEBLAudioCallback (const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo, const PaStreamCallbackFlags statusFlags, void *userData)
void	PlayCallBack (void *udata, Uint8 *stream, int len)

Function Documentation

PEBLAudioCallback()

int PEBLAudioCallback	(	const void *	inputBuffer,
		void *	outputBuffer,
		unsigned long	framesPerBuffer,
		const PaStreamCallbackTimeInfo *	timeInfo,
		const PaStreamCallbackFlags	statusFlags,
		void *	userData
	)

PlayCallBack()

void PlayCallBack	(	void *	udata,
		Uint8 *	stream,
		int	len
	)

Definition at line 160 of file portaudio/PlatformAudioOut.cpp.

{
 
    //    cout << "Callback Called\n" <<endl;
    Uint8 * waveptr;
    int waveleft;
 
    //Cast udata to a proper form--this is dangerous and nasty.
    AudioInfo * wave = (AudioInfo*)(udata);
    
    //Put pointer at the proper place in the buffer.
    waveptr = wave->audio + wave->audiopos;
    waveleft = wave->audiolen - wave->audiopos;
 
    //   cout << "waveleft: " <<  waveleft << "  len:" << len << endl;
    if(waveleft >= len)
        {
            SDL_MixAudio(stream, waveptr, len, SDL_MIX_MAXVOLUME);
            wave->audiopos += len;
            
        }
    else
        {
            //This plays the rest of the file and stops playing.
            SDL_MixAudio(stream, waveptr, waveleft, SDL_MIX_MAXVOLUME);
            wave->audiopos += waveleft;
            SDL_PauseAudio(1);
            wave->audiopos=0;  //Reset it back to the beginning.
            
        }
    
}