blob: a1ccabe5d3153cfa2a90033925a0c7d8f2881ad2 [file] [log] [blame] [raw]
#include <iostream>
#ifndef _WIN32
#ifdef USE_SDL2
#include <SDL2/SDL.h>
#else
#include <SDL/SDL.h>
#endif
#include "AudioSDL.h"
bool AudioSDL::hasSDL()
{
return true;
}
#else
#include <SDL/SDL.h>
#include <windows.h>
#include "AudioSDL.h"
#define SDL_DLL "SDL2.dll"
#define LOADFUNC(NAME) NAME = GetProcAddress(SDL_DLL, "NAME");
#define EXTERN __declspec(dllimport)
//typedef int (*_SDL_OpenAudio)(HWND hWnd, DWORD dwFlags);
//typedef void (*_SDL_PauseAudio)(int pause_on);
//typedef int EXTERN *(*_SDL_LockAudio)();
//typedef void EXTERN (*_SDL_UnlockAudio)();
//typedef void EXTERN (*_SDL_CloseAudio)();
//typedef void EXTERN (*SDL_Delay)(Uint32 ms);
//typedef const char EXTERN *(*SDL_GetCurrentAudioDriver)(void);
//
//static _SDL_OpenAudio SDL_OpenAudio;
//static _SDL_PauseAudio SDL_PauseAudio;
//static _SDL_LockAudio SDL_LockAudio;
//static _SDL_UnlockAudio SDL_UnlockAudio;
//static _SDL_Delay SDL_Delay;
//static _SDL_CloseAudio SDL_CloseAudio;
bool AudioSDL::hasSDL()
{
HINSTANCE sdlDll = LoadLibrary(SDL_DLL);
return sdlDll != 0;
}
#endif
#include "Tedmem.h"
void AudioSDL::setCallback(callbackFunc callback_)
{
SDL_LockAudio();
callback = callback_;
SDL_UnlockAudio();
}
void AudioSDL::setSampleRate(unsigned int newSampleRate)
{
if (audiohwspec) {
SDL_PauseAudio(1);
unsigned int fadeoutTime = 1000 * bufferLength / audiohwspec->samples;
SDL_Delay(fadeoutTime);
SDL_CloseAudio();
SDL_AudioSpec *obtained = new SDL_AudioSpec;
audiohwspec->samples = newSampleRate;
try {
SDL_OpenAudio(audiohwspec, obtained);
if (obtained) {
SDL_AudioSpec *temp = audiohwspec;
audiohwspec = obtained;
delete temp;
}
SDL_PauseAudio(0);
} catch (char *txt) {
std::cerr << "Exception occurred: " << txt << std::endl;
}
} else {
}
Audio::setSampleRate(newSampleRate);
}
AudioSDL::AudioSDL(void *userData, unsigned int sampleFrq_ = 48000,
unsigned int bufDurInMsec = 40) : Audio(sampleFrq_), audiohwspec(0)
{
if (SDL_Init(SDL_INIT_AUDIO) < 0) { // SDL_INIT_AUDIO|
std::cerr << "Unable to init SDL: " << SDL_GetError() << std::endl;
exit(1);
}
atexit(SDL_Quit);
SDL_AudioSpec *desired, *obtained = NULL;
try {
desired = new SDL_AudioSpec;
obtained = new SDL_AudioSpec;
} catch(char *txt) {
std::cerr << "Exception occurred: " << txt << std::endl;
}
unsigned int fragsPerSec = 1000 / bufDurInMsec;
unsigned int bufSize1kbChunk = (sampleFrq_ / fragsPerSec / 1024) * 1024;
if (!bufSize1kbChunk) bufSize1kbChunk = 512;
bufferLength = bufSize1kbChunk;
desired->freq = sampleFrq_;
desired->format = AUDIO_S16;
desired->channels = 1;
desired->samples = bufferLength;
desired->callback = audioCallback;
desired->userdata = userData;
desired->size = desired->channels * desired->samples * sizeof(Uint8);
desired->silence = 0x00;
unsigned int bfSize = TED_SOUND_CLOCK / fragsPerSec; //(bufferLength * TED_SOUND_CLOCK + sampleFrq_ / 2) / sampleFrq_;
// double length ring buffer, dividable by 8
ringBufferSize = (bfSize / 8 + 1) * 16;
ringBuffer = new short[ringBufferSize];
// trigger initial buffer fill
ringBufferIndex = ringBufferSize-1;
if (SDL_OpenAudio(desired, obtained)) {
fprintf(stderr,"SDL_OpenAudio failed!\n");
return;
} else {
fprintf(stderr,"SDL_OpenAudio success!\n");
#ifdef USE_SDL2
fprintf(stderr, "Using audio driver : %s\n", SDL_GetCurrentAudioDriver());
#endif
if ( obtained == NULL ) {
fprintf(stderr, "Great! We have our desired audio format!\n");
audiohwspec = desired;
delete obtained;
} else {
//fprintf(stderr, "Oops! Failed to get desired audio format!\n");
audiohwspec = obtained;
delete desired;
}
}
paused = true;
}
void AudioSDL::play()
{
SDL_PauseAudio(0);
paused = false;
}
void AudioSDL::pause()
{
SDL_PauseAudio(1);
paused = true;
}
void AudioSDL::stop()
{
SDL_PauseAudio(1);
paused = true;
}
void AudioSDL::sleep(unsigned int msec)
{
SDL_Delay(msec);
}
void AudioSDL::lock()
{
SDL_LockAudio();
}
void AudioSDL::unlock()
{
SDL_UnlockAudio();
}
AudioSDL::~AudioSDL()
{
SDL_PauseAudio(1);
SDL_Delay(20);
SDL_CloseAudio();
SDL_Quit();
if (audiohwspec)
delete audiohwspec;
if (ringBuffer)
delete [] ringBuffer;
}