#include "SDL_config.h"
#include <stdio.h>
#include <stdlib.h>
#include "SDL.h"

Include dependency graph for testaudiohotplug.c:

Functions
static void	quit (int rc)
void	fillerup (void _pos, Uint8 stream, int len)
void	poked (int sig)
static const char *	devtypestr (int iscapture)
static void	iteration ()
int	main (int argc, char *argv[])

Variables
static SDL_AudioSpec	spec
static Uint8 *	sound = NULL
static Uint32	soundlen = 0
static int	posindex = 0
static Uint32	positions [64]
static int	done = 0

Function Documentation

static const char* devtypestr ( int iscapture )

static

Definition at line 78 of file testaudiohotplug.c.

Referenced by iteration().

{
    return iscapture ? "capture" : "output";
}

void fillerup	(	void *	_pos,
		Uint8 *	stream,
		int	len
	)

Definition at line 46 of file testaudiohotplug.c.

References SDL_memcpy, sound, and soundlen.

{
    Uint32 pos = *((Uint32 *) _pos);
    Uint8 *waveptr;
    int waveleft;
    /* Set up the pointers */
    waveptr = sound + pos;
    waveleft = soundlen - pos;
    /* Go! */
    while (waveleft <= len) {
        SDL_memcpy(stream, waveptr, waveleft);
        stream += waveleft;
        len -= waveleft;
        waveptr = sound;
        waveleft = soundlen;
        pos = 0;
    }
    SDL_memcpy(stream, waveptr, len);
    pos += len;
    *((Uint32 *) _pos) = pos;
}

static void iteration ( )

static

Definition at line 84 of file testaudiohotplug.c.

References SDL_Event::adevice, SDL_AudioSpec::callback, devtypestr(), done, e, fillerup(), SDL_AudioDeviceEvent::iscapture, SDL_Event::key, SDL_KeyboardEvent::keysym, NULL, posindex, positions, SDL_AUDIODEVICEADDED, SDL_AUDIODEVICEREMOVED, SDL_CloseAudioDevice, SDL_GetAudioDeviceName, SDL_GetError, SDL_KEYUP, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LogError, SDL_OpenAudioDevice, SDL_PauseAudioDevice, SDL_PollEvent, SDL_QUIT, SDLK_ESCAPE, SDL_Keysym::sym, SDL_Event::type, SDL_AudioSpec::userdata, and SDL_AudioDeviceEvent::which.

Referenced by main(), and video_getSetWindowData().

{
    SDL_Event e;
    SDL_AudioDeviceID dev;
    while (SDL_PollEvent(&e)) {
        if (e.type == SDL_QUIT) {
            done = 1;
        } else if (e.type == SDL_KEYUP) {
            if (e.key.keysym.sym == SDLK_ESCAPE)
                done = 1;
        } else if (e.type == SDL_AUDIODEVICEADDED) {
            int index = e.adevice.which;
            int iscapture = e.adevice.iscapture;
            const char *name = SDL_GetAudioDeviceName(index, iscapture);
            if (name != NULL)
                SDL_Log("New %s audio device at index %u: %s\n", devtypestr(iscapture), (unsigned int) index, name);
            else {
                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Got new %s device at index %u, but failed to get the name: %s\n",
                    devtypestr(iscapture), (unsigned int) index, SDL_GetError());
                continue;
            }
            if (!iscapture) {
                positions[posindex] = 0;
                spec.userdata = &positions[posindex++];
                spec.callback = fillerup;
                dev = SDL_OpenAudioDevice(name, 0, &spec, NULL, 0);
                if (!dev) {
                    SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open '%s': %s\n", name, SDL_GetError());
                } else {
                    SDL_Log("Opened '%s' as %u\n", name, (unsigned int) dev);
                    SDL_PauseAudioDevice(dev, 0);
                }
            }
        } else if (e.type == SDL_AUDIODEVICEREMOVED) {
            dev = (SDL_AudioDeviceID) e.adevice.which;
            SDL_Log("%s device %u removed.\n", devtypestr(e.adevice.iscapture), (unsigned int) dev);
            SDL_CloseAudioDevice(dev);
        }
    }
}

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 137 of file testaudiohotplug.c.

References done, sort_controllers::filename, i, iteration(), loop(), NULL, poked(), quit(), SDL_CreateWindow, SDL_Delay, SDL_FreeWAV, SDL_GetAudioDriver, SDL_GetCurrentAudioDriver, SDL_GetError, SDL_GetNumAudioDrivers, SDL_Init, SDL_INIT_AUDIO, SDL_INIT_VIDEO, SDL_LoadWAV, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_MinimizeWindow, SDL_Quit, SDL_QuitSubSystem, SDL_strlcpy, SDL_WINDOWPOS_UNDEFINED, sound, and soundlen.

{
    int i;
    char filename[4096];
    /* Enable standard application logging */
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
    /* Load the SDL library */
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
        return (1);
    }
    /* Some targets (Mac CoreAudio) need an event queue for audio hotplug, so make and immediately hide a window. */
    SDL_MinimizeWindow(SDL_CreateWindow("testaudiohotplug", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, 0));
    if (argc > 1) {
        SDL_strlcpy(filename, argv[1], sizeof(filename));
    } else {
        SDL_strlcpy(filename, "sample.wav", sizeof(filename));
    }
    /* Load the wave file into memory */
    if (SDL_LoadWAV(filename, &spec, &sound, &soundlen) == NULL) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
        quit(1);
    }
#if HAVE_SIGNAL_H
    /* Set the signals */
#ifdef SIGHUP
    signal(SIGHUP, poked);
#endif
    signal(SIGINT, poked);
#ifdef SIGQUIT
    signal(SIGQUIT, poked);
#endif
    signal(SIGTERM, poked);
#endif /* HAVE_SIGNAL_H */
    /* Show the list of available drivers */
    SDL_Log("Available audio drivers:");
    for (i = 0; i < SDL_GetNumAudioDrivers(); ++i) {
        SDL_Log("%i: %s", i, SDL_GetAudioDriver(i));
    }
    SDL_Log("Select a driver with the SDL_AUDIODRIVER environment variable.\n");
    SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
#ifdef __EMSCRIPTEN__
    emscripten_set_main_loop(loop, 0, 1);
#else
    while (!done) {
        SDL_Delay(100);
        iteration();
    }
#endif
    /* Clean up on signal */
    /* Quit audio first, then free WAV. This prevents access violations in the audio threads. */
    SDL_QuitSubSystem(SDL_INIT_AUDIO);
    SDL_FreeWAV(sound);
    SDL_Quit();
    return (0);
}

void poked ( int sig )

Definition at line 72 of file testaudiohotplug.c.

References done.

{
    done = 1;
}

static void quit ( int rc )

static

Definition at line 39 of file testaudiohotplug.c.

References SDL_Quit.

{
    SDL_Quit();
    exit(rc);
}

Variable Documentation

int done = 0

static

Definition at line 70 of file testaudiohotplug.c.

int posindex = 0

static

Definition at line 34 of file testaudiohotplug.c.

Referenced by iteration().

Uint32 positions[64]

static

Definition at line 35 of file testaudiohotplug.c.

Referenced by iteration().

Uint8* sound = NULL

static

Definition at line 31 of file testaudiohotplug.c.

Uint32 soundlen = 0

static

Definition at line 32 of file testaudiohotplug.c.

SDL_AudioSpec spec

static

Definition at line 30 of file testaudiohotplug.c.

Functions

Variables

Function Documentation

Variable Documentation