x20090325-1554

1 files changed, 397 insertions, 0 deletions

diff --git a/emu/port/devaudio.c b/emu/port/devaudio.c
new file mode 100644
index 00000000..c592f88c
--- /dev/null
+++ b/emu/port/devaudio.c
@@ -0,0 +1,397 @@
+#include	"dat.h"
+#include	"fns.h"
+#include	"error.h"
+#include	"audio.h"
+
+Dirtab audiotab[] =
+{
+	".",		{Qdir, 0, QTDIR},	0,	0555,
+	"audio",	{Qaudio},	0,	0666,
+	"audioctl",	{Qaudioctl},	0,	0666,
+};
+
+static void
+audioinit(void)
+{
+	audio_file_init();
+}
+
+static Chan*
+audioattach(char *spec)
+{
+	return devattach('A', spec);
+}
+
+static Walkqid*
+audiowalk(Chan *c, Chan *nc, char **name, int nname)
+{
+	return devwalk(c, nc, name, nname, audiotab, nelem(audiotab), devgen);
+}
+
+static int
+audiostat(Chan *c, uchar *db, int n)
+{
+	return devstat(c, db, n, audiotab, nelem(audiotab), devgen);
+}
+
+static Chan*
+audioopen(Chan *c, int omode)
+{
+	c = devopen(c, omode, audiotab, nelem(audiotab), devgen);
+	if(waserror()){
+		c->flag &= ~COPEN;
+		nexterror();
+	}
+	switch(c->qid.path) {
+	case Qdir:
+	case Qaudioctl:
+		break;
+	case Qaudio:
+		audio_file_open(c, c->mode);
+		break;
+	default:
+		error(Egreg);
+	}
+	poperror();
+	return c;
+}
+
+static void
+audioclose(Chan *c)
+{
+	if((c->flag & COPEN) == 0)
+		return;
+
+	switch(c->qid.path) {
+	case Qdir:
+	case Qaudioctl:
+		break;
+	case Qaudio:
+		audio_file_close(c);
+		break;
+	default:
+		error(Egreg);
+	}
+}
+
+static int ctlsummary(char*, int, Audio_t*);
+
+static long
+audioread(Chan *c, void *va, long count, vlong offset)
+{
+	char *buf;
+	int n;
+
+	if(c->qid.type & QTDIR)
+		return devdirread(c, va, count, audiotab, nelem(audiotab), devgen);
+	switch(c->qid.path) {
+	case Qaudio:
+		return audio_file_read(c, va, count, offset);
+	case Qaudioctl:
+		buf = smalloc(READSTR);
+		if(waserror()){
+			free(buf);
+			nexterror();
+		}
+		n = ctlsummary(buf, READSTR, getaudiodev());
+		count = readstr(offset, va, n, buf);
+		poperror();
+		free(buf);
+		return count;
+	}
+	return 0;
+}
+
+static long
+audiowrite(Chan *c, void *va, long count, vlong offset)
+{
+	switch(c->qid.path) {
+	case Qaudio:
+		return audio_file_write(c, va, count, offset);
+	case Qaudioctl:
+		return audio_ctl_write(c, va, count, offset);
+	}
+	return 0;
+}
+
+static int sval(char*, unsigned long*, ulong, ulong);
+static int str2val(svp_t*, char*, ulong*);
+static char* val2str(svp_t*, ulong);
+
+int
+audioparse(char* args, int len, Audio_t *t)
+{
+	int i, n;
+	ulong v;
+	Cmdbuf *cb;
+	ulong tf;
+	Audio_t info = *t;
+
+	cb = parsecmd(args, len);
+	if(waserror()){
+		free(cb);
+		return 0;
+	}
+
+	tf = 0;
+	n = cb->nf;
+	for(i = 0; i < cb->nf-1; i++) {
+		if(strcmp(cb->f[i], "in") == 0){
+			tf |= AUDIO_IN_FLAG;
+			continue;
+		}
+		if(strcmp(cb->f[i], "out") == 0) {
+			tf |= AUDIO_OUT_FLAG;
+			continue;
+		}
+		if(tf == 0)
+			tf = AUDIO_IN_FLAG | AUDIO_OUT_FLAG;
+		if(strcmp(cb->f[i], "bits") == 0) {
+			if(!str2val(audio_bits_tbl, cb->f[i+1], &v))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_BITS_FLAG | AUDIO_MOD_FLAG;
+				info.in.bits = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_BITS_FLAG | AUDIO_MOD_FLAG;
+				info.out.bits = v;
+			}
+		} else if(strcmp(cb->f[i], "buf") == 0) {
+			if(!sval(cb->f[i+1], &v, Audio_Max_Val, Audio_Min_Val))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_BUF_FLAG | AUDIO_MOD_FLAG;
+				info.in.buf = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_BUF_FLAG | AUDIO_MOD_FLAG;
+				info.out.buf = v;
+			}
+		} else if(strcmp(cb->f[i], "chans") == 0) {
+			if(!str2val(audio_chan_tbl, cb->f[i+1], &v))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_CHAN_FLAG | AUDIO_MOD_FLAG;
+				info.in.chan = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_CHAN_FLAG | AUDIO_MOD_FLAG;
+				info.out.chan = v;
+			}
+		} else if(strcmp(cb->f[i], "indev") == 0) {
+			if(!str2val(audio_indev_tbl, cb->f[i+1], &v))
+				break;
+			i++;
+			info.in.flags |= AUDIO_DEV_FLAG | AUDIO_MOD_FLAG;
+			info.in.dev = v;
+		} else if(strcmp(cb->f[i], "outdev") == 0) {
+			if(!str2val(audio_outdev_tbl, cb->f[i+1], &v))
+				break;
+			i++;
+			info.out.flags |= AUDIO_DEV_FLAG | AUDIO_MOD_FLAG;
+			info.out.dev = v;
+		} else if(strcmp(cb->f[i], "enc") == 0) {
+			if(!str2val(audio_enc_tbl, cb->f[i+1], &v))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_ENC_FLAG | AUDIO_MOD_FLAG;
+				info.in.enc = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_ENC_FLAG | AUDIO_MOD_FLAG;
+				info.out.enc = v;
+			}
+		} else if(strcmp(cb->f[i], "rate") == 0) {
+			if(!str2val(audio_rate_tbl, cb->f[i+1], &v))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_RATE_FLAG | AUDIO_MOD_FLAG;
+				info.in.rate = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_RATE_FLAG | AUDIO_MOD_FLAG;
+				info.out.rate = v;
+			}
+		} else if(strcmp(cb->f[i], "vol") == 0) {
+			if(!sval(cb->f[i+1], &v, Audio_Max_Val, Audio_Min_Val))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_VOL_FLAG | AUDIO_MOD_FLAG;
+				info.in.left = v;
+				info.in.right = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_VOL_FLAG | AUDIO_MOD_FLAG;
+				info.out.left = v;
+				info.out.right = v;
+			}
+		} else if(strcmp(cb->f[i], "left") == 0) {
+			if(!sval(cb->f[i+1], &v, Audio_Max_Val, Audio_Min_Val))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_LEFT_FLAG | AUDIO_MOD_FLAG;
+				info.in.left = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_LEFT_FLAG | AUDIO_MOD_FLAG;
+				info.out.left = v;
+			}
+		} else if(strcmp(cb->f[i], "right") == 0) {
+			if(!sval(cb->f[i+1], &v, Audio_Max_Val, Audio_Min_Val))
+				break;
+			i++;
+			if(tf & AUDIO_IN_FLAG) {
+				info.in.flags |= AUDIO_RIGHT_FLAG | AUDIO_MOD_FLAG;
+				info.in.right = v;
+			}
+			if(tf & AUDIO_OUT_FLAG) {
+				info.out.flags |= AUDIO_RIGHT_FLAG | AUDIO_MOD_FLAG;
+				info.out.right = v;
+			}
+		}else
+			break;
+	}
+	poperror();
+	free(cb);
+
+	if(i < n)
+		return 0;
+
+	*t = info;	/* set information back */
+	return 1;
+}
+
+static char*
+audioparam(char* p, char* e, char* name, int val, svp_t* tbl)
+{
+	char *s;
+	svp_t *sv;
+
+	if((s = val2str(tbl, val)) != nil){
+		p = seprint(p, e, "%s %s", name, s);	/* current setting */
+		for(sv = tbl; sv->s != nil; sv++)
+			if(sv->v != val)
+				p = seprint(p, e, " %s", sv->s);	/* other possible values */
+		p = seprint(p, e, "\n");
+	}else
+		p = seprint(p, e, "%s unknown\n", name);
+	return p;
+}
+
+static char*
+audioioparam(char* p, char* e, char* name, int ival, int oval, svp_t* tbl)
+{
+	if(ival == oval)
+		return audioparam(p, e, name, ival, tbl);
+	p = audioparam(seprint(p, e, "in "), e, name, ival, tbl);
+	p = audioparam(seprint(p, e, "out "), e, name, oval, tbl);
+	return p;
+}
+
+static int
+ctlsummary(char *buf, int bsize, Audio_t *adev)
+{
+	Audio_d *in, *out;
+	char	*p, *e;
+
+	in = &adev->in;
+	out = &adev->out;
+
+	p = buf;
+	e = p + bsize;
+
+	p = audioparam(p, e, "indev", in->dev, audio_indev_tbl);
+	p = audioparam(p, e, "outdev", out->dev, audio_outdev_tbl);
+	p = audioioparam(p, e, "enc", in->enc, out->enc, audio_enc_tbl);
+	p = audioioparam(p, e, "rate", in->rate, out->rate, audio_rate_tbl);
+	p = audioioparam(p, e, "bits", in->bits, out->bits, audio_bits_tbl);	/* this one is silly */
+	p = audioioparam(p, e, "chans", in->chan, out->chan, audio_chan_tbl);
+	/* TO DO: minimise in/out left/right where possible */
+	if(in->left != in->right){
+		p = seprint(p, e, "in left %d 0 100\n", in->left);
+		p = seprint(p, e, "in right %d 0 100\n", in->right);
+	}else
+		p = seprint(p, e, "in %d 0 100\n", in->right);
+	if(out->left != out->right){
+		p = seprint(p, e, "out left %d 0 100\n", out->left);
+		p = seprint(p, e, "out right %d 0 100\n", out->right);
+	}else
+		p = seprint(p, e, "out %d 0 100\n", out->right);
+	p = seprint(p, e, "in buf %d %d %d\n", in->buf, Audio_Min_Val, Audio_Max_Val);
+	p = seprint(p, e, "out buf %d %d %d\n", out->buf, Audio_Min_Val, Audio_Max_Val);
+
+	return p-buf;
+}
+
+void
+audio_info_init(Audio_t *t)
+{
+	t->in = Default_Audio_Format;
+	t->in.dev = Default_Audio_Input;
+	t->out = Default_Audio_Format;
+	t->out.dev = Default_Audio_Output;
+}
+
+static int
+str2val(svp_t* t, char* s, ulong *v)
+{
+	if(t == nil || s == nil)
+		return 0;
+	for(; t->s != nil; t++) {
+		if(strncmp(t->s, s, strlen(t->s)) == 0) {
+			*v = t->v;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+static char*
+val2str(svp_t* t, ulong v)
+{
+	if(t == nil)
+		return nil;
+	for(; t->s != nil; t++)
+		if(t->v == v)
+			return t->s;
+	return nil;
+}
+
+static int 
+sval(char* buf, ulong* v, ulong max, ulong min)
+{
+	unsigned long val = strtoul(buf, 0, 10);
+
+	if(val > max || val < min)
+		return 0;
+	*v = val;
+	return 1;
+}
+
+Dev audiodevtab = {
+        'A',
+        "audio",
+
+        audioinit,
+        audioattach,
+        audiowalk,
+        audiostat,
+        audioopen,
+        devcreate,
+        audioclose,
+        audioread,
+        devbread,
+        audiowrite,
+        devbwrite,
+        devremove,
+        devwstat
+};
+