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includes: remove extraneous c file

--- a/include/npe/SDL3/audio.c

+++ /dev/null

@@ -1,299 +1,0 @@

-#include "_sdl.h"

-

-enum {

-	Aout = 2,

-	Arec,

-

-	Audiosamples = 8192,

-};

-

-typedef struct Audiodev Audiodev;

-

-struct Audiodev {

-	Lock;

-	void (*cb)(void *, Uint8 *, int);

-	void *userdata;

-	char *name;

-	Channel *wait;

-	Uint8 *buf;

-	int bufsz;

-	int paused;

-	int fd;

-	int pid;

-	int pidconv;

-	int mode;

-};

-

-/* FIXME extra USB audio devices? */

-static Audiodev au[4] = {

-	[0] = {.fd = -1, .mode = -1},

-	[1] = {.fd = -1, .mode = -1},

-	[Aout] = {.name = "/dev/audio", .fd = -1, .pid = -1, .mode = OWRITE},

-	[Arec] = {.name = "/dev/audio", .fd = -1, .pid = -1, .mode = OREAD},

-};

-

-static struct {

-	char *spec;

-	int ssz; /* samples size */

-}fmts[] = {

-	[SDL_AUDIO_U8] = {"u8", 1},

-	[SDL_AUDIO_S8] = {"s8", 1},

-	[SDL_AUDIO_S16LE] = {"s16", 2},

-	[SDL_AUDIO_S16BE] = {"S16", 2},

-	[SDL_AUDIO_S32LE] = {"s32", 4},

-	[SDL_AUDIO_S32BE] = {"S32", 4},

-	[SDL_AUDIO_F32LE] = {"f32", 4},

-	[SDL_AUDIO_F32BE] = {"F32", -1}, /* FIXME big endian f32 not supported by pcmconv */

-};

-

-int

-SDL_GetNumAudioDevices(int iscapture)

-{

-	/* FIXME look for extra USB devices? */

-	USED(iscapture);

-	return 1;

-}

-

-char *

-SDL_GetAudioDeviceName(int index, int iscapture)

-{

-	/* FIXME look for extra USB devices? */

-	USED(index);

-	return au[iscapture ? Arec : Aout].name;

-}

-

-void

-SDL_LockAudioDevice(SDL_AudioDeviceID id)

-{

-	lock(&au[id]);

-}

-

-void

-SDL_UnlockAudioDevice(SDL_AudioDeviceID id)

-{

-	unlock(&au[id]);

-}

-

-static void

-audiothread(void *p)

-{

-	Audiodev *a;

-

-	a = p;

-	threadsetname("%s (%s)", a->name, a->mode == OREAD ? "out" : "in");

-

-	for(;;){

-		if(a->mode == OREAD && readn(a->fd, a->buf, a->bufsz) != a->bufsz)

-			break;

-

-		lock(a);

-		if(a->mode == OWRITE && a->paused)

-			memset(a->buf, 0, a->bufsz);

-		else

-			a->cb(a->userdata, a->buf, a->bufsz);

-		unlock(a);

-

-		if(a->mode == OWRITE && write(a->fd, a->buf, a->bufsz) != a->bufsz)

-			break;

-	}

-

-	lock(a);

-	(a->mode == OWRITE ? write : read)(a->fd, a->buf, 0);

-	chanclose(a->wait);

-	unlock(a);

-

-	threadexits(nil);

-}

-

-void

-SDL_PauseAudioDevice(SDL_AudioDeviceID id, SDL_bool pause)

-{

-	Audiodev *a;

-

-	a = &au[id];

-	if(a->paused && !pause){

-		if(a->pid < 0)

-			a->pid = proccreate(audiothread, a, 4096);

-		a->paused = 0;

-	}else if(!a->paused && pause){

-		a->paused = 1;

-	}

-}

-

-void

-SDL_PauseAudio(int pause_on)

-{

-	SDL_PauseAudioDevice(1, pause_on);

-}

-

-static int

-convspec(SDL_AudioSpec *s, char *spec, int n)

-{

-	int ssz;

-

-	ssz = -1;

-	if(s->format < 0 || s->format >= nelem(fmts))

-		werrstr("invalid audio format: #%d", s->format);

-	else if(fmts[s->format].ssz < 1)

-		werrstr("unsupported audio format: #%d", s->format);

-	else if(s->channels < 1)

-		werrstr("invalid number of channels: %d", s->channels);

-	else if(s->freq < 1)

-		werrstr("invalid sampling rate: %d", s->freq);

-	else if(snprint(spec, n, "%sc%dr%d", fmts[s->format].spec, s->channels, s->freq) >= n)

-		werrstr("audio spec does not fit");

-	else

-		ssz = fmts[s->format].ssz;

-

-	return ssz;

-}

-

-// https://wiki.libsdl.org/SDL3/SDL_ConvertAudio

-int

-SDL_ConvertAudio(SDL_AudioCVT *cvt)

-{

-	USED(cvt);

-	return 0;

-}

-

-// https://wiki.libsdl.org/SDL3/SDL_BuildAudioCVT

-int

-SDL_BuildAudioCVT(SDL_AudioCVT *cvt, SDL_AudioFormat src_format, Uint8 src_channels, int src_rate, SDL_AudioFormat dst_format, Uint8 dst_channels, int dst_rate)

-{

-	USED(cvt);

-	USED(src_format, src_channels, src_rate);

-	USED(dst_format, dst_channels, dst_rate);

-	return 0;

-}

-

-static void

-setpipebuf(int f, int sz)

-{

-	Dir d;

-

-	nulldir(&d);

-	d.length = sz;

-	dirfwstat(f, &d);

-}

-

-SDL_AudioDeviceID

-SDL_OpenAudioDevice(char *dev, int rec, SDL_AudioSpec *want, SDL_AudioSpec *have, u32int change)

-{

-	SDL_AudioDeviceID id;

-	int p[2], ssz, fd;

-	char spec[16];

-	Audiodev *a;

-

-	/* FIXME look for extra USB devices? */

-	USED(dev);

-

-	id = rec ? Arec : Aout;

-	a = &au[id];

-

-	if(have == nil)

-		have = want;

-	*have = *want;

-	if(have->freq < 44100 && (change & SDL_AUDIO_ALLOW_FREQUENCY_CHANGE) != 0)

-		have->freq = 44100;

-	if(have->format <= 0 || have->format >= nelem(fmts) || fmts[have->format].ssz < 1 && (change & SDL_AUDIO_ALLOW_FORMAT_CHANGE) != 0)

-		have->format = AUDIO_S16;

-	if(have->channels < 1 && (change & SDL_AUDIO_ALLOW_CHANNELS_CHANGE) != 0)

-		have->channels = 2;

-	if(have->samples < 2 || (have->samples & (have->samples-1)) != 0){

-		if(change & SDL_AUDIO_ALLOW_SAMPLES_CHANGE)

-			have->samples = Audiosamples;

-		else{

-			werrstr("invalid number of samples: %d", have->samples);

-			goto err;

-		}

-	}

-

-	if((ssz = convspec(have, spec, sizeof(spec))) < 1)

-		goto err;

-

-	a->userdata = have->userdata;

-	a->cb = have->callback;

-	a->wait = chancreate(sizeof(ulong), 0);

-	a->bufsz = have->samples * ssz * have->channels;

-	a->buf = malloc(a->bufsz);

-	if(a->wait == nil || a->buf == nil){

-		werrstr("memory");

-		goto err;

-	}

-

-	a->paused = 1;

-	a->pid = -1;

-	a->pidconv = -1;

-	if(have->freq != 44100 || have->format != AUDIO_S16 || have->channels != 2){

-		if((fd = open(a->name, a->mode)) < 0)

-			goto err;

-		pipe(p);

-		setpipebuf(p[0], a->bufsz);

-		if((a->pidconv = rfork(RFPROC|RFNOTEG|RFFDG|RFCENVG)) == 0){

-			dup(fd, rec ? 0 : 1); close(fd);

-			dup(p[0], rec ? 1 : 0); close(p[0]);

-			close(p[1]);

-			//close(2);

-			if(execl("/bin/audio/pcmconv", "pcmconv", rec ? "-o" : "-i", spec, nil) != 0)

-				exits("%r");

-		}else if(a->pidconv < 0){

-			werrstr("pcmconv: %r");

-			close(fd);

-			goto err;

-		}

-		a->fd = p[1];

-		close(p[0]);

-		close(fd);

-	}else if(a->fd < 0 && (a->fd = open(a->name, a->mode|OCEXEC)) < 0)

-		goto err;

-

-	return id;

-err:

-	werrstr("SDL_OpenAudioDevice: %r");

-	if(a->fd >= 0){

-		close(a->fd);

-		a->fd = -1;

-	}

-	free(a->buf);

-	a->buf = nil;

-	if(a->wait != nil){

-		chanfree(a->wait);

-		a->wait = nil;

-	}

-

-	return 0;

-}

-

-void

-SDL_CloseAudioDevice(SDL_AudioDeviceID id)

-{

-	Audiodev *a;

-	Waitmsg *w;

-	int pid;

-

-	a = &au[id];

-

-	if(a->fd < 0)

-		return;

-

-	lock(a);

-		close(a->fd);

-	unlock(a);

-

-	if(a->pid >= 0)

-		recvul(a->wait);

-	chanfree(a->wait);

-

-	free(a->buf);

-	a->fd = -1;

-	a->pid = -1;

-again:

-	if(a->pidconv >= 0 && (w = wait()) != nil){

-		if(w->msg[0])

-			fprint(2, "SDL_CloseAudioDevice: %s: %s\n", a->name, w->msg);

-		pid = w->pid;

-		free(w);

-		if(pid != a->pidconv)

-			goto again;

-	}

-}

-- 

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