"xlatb\n\t"
"stosb\n\t"
"loop 1b\n\t"
- : "=&b"(d0), "=&c"(d1), "=&D"(d2), "=&S"(d3)
- : "0"((long) table), "1"(n), "2"((long) buff), "3"((long) buff)
- : "memory", "ax");
+ : "=&b"(d0), "=&c"(d1), "=&D"(d2), "=&S"(d3)
+ : "0"((long) table), "1"(n), "2"((long) buff), "3"((long) buff)
+ : "memory", "ax");
#else
while (n--)
*buff = table[*(unsigned char *)buff], buff++;
isdn_audio_linear2ulaw(int sample)
{
static int exp_lut[256] =
- {
- 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
- };
+ {
+ 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
+ };
int sign,
- exponent,
- mantissa;
+ exponent,
+ mantissa;
unsigned char ulawbyte;
/* Get the sample into sign-magnitude. */
};
static int
-isdn_audio_get_bits(adpcm_state * s, unsigned char **in, int *len)
+isdn_audio_get_bits(adpcm_state *s, unsigned char **in, int *len)
{
while (s->nleft < s->nbits) {
int d = *((*in)++);
}
static void
-isdn_audio_put_bits(int data, int nbits, adpcm_state * s,
+isdn_audio_put_bits(int data, int nbits, adpcm_state *s,
unsigned char **out, int *len)
{
s->word = (s->word << nbits) | (data & bitmask[nbits]);
}
adpcm_state *
-isdn_audio_adpcm_init(adpcm_state * s, int nbits)
+isdn_audio_adpcm_init(adpcm_state *s, int nbits)
{
if (!s)
s = kmalloc(sizeof(adpcm_state), GFP_ATOMIC);
}
dtmf_state *
-isdn_audio_dtmf_init(dtmf_state * s)
+isdn_audio_dtmf_init(dtmf_state *s)
{
if (!s)
s = kmalloc(sizeof(dtmf_state), GFP_ATOMIC);
*/
int
-isdn_audio_adpcm2xlaw(adpcm_state * s, int fmt, unsigned char *in,
+isdn_audio_adpcm2xlaw(adpcm_state *s, int fmt, unsigned char *in,
unsigned char *out, int len)
{
int a = s->a;
a++;
if (fmt)
*out++ = isdn_audio_ulaw_to_alaw[
- isdn_audio_linear2ulaw(a << 2)];
+ isdn_audio_linear2ulaw(a << 2)];
else
*out++ = isdn_audio_linear2ulaw(a << 2);
olen++;
}
int
-isdn_audio_xlaw2adpcm(adpcm_state * s, int fmt, unsigned char *in,
+isdn_audio_xlaw2adpcm(adpcm_state *s, int fmt, unsigned char *in,
unsigned char *out, int len)
{
int a = s->a;
while (len--) {
int e = 0,
- nmax = 1 << (nbits - 1);
+ nmax = 1 << (nbits - 1);
int sign,
- delta;
+ delta;
if (fmt)
delta = (isdn_audio_alaw_to_s16[*in++] >> 2) - a;
/*
* Goertzel algorithm.
- * See http://ptolemy.eecs.berkeley.edu/papers/96/dtmf_ict/
+ * See http://ptolemy.eecs.berkeley.edu/papers/96/dtmf_ict/
* for more info.
* Result is stored into an sk_buff and queued up for later
* evaluation.
*/
static void
-isdn_audio_goertzel(int *sample, modem_info * info)
+isdn_audio_goertzel(int *sample, modem_info *info)
{
int sk,
- sk1,
- sk2;
+ sk1,
+ sk2;
int k,
- n;
+ n;
struct sk_buff *skb;
int *result;
skb = dev_alloc_skb(sizeof(int) * NCOEFF);
if (!skb) {
printk(KERN_WARNING
- "isdn_audio: Could not alloc DTMF result for ttyI%d\n",
+ "isdn_audio: Could not alloc DTMF result for ttyI%d\n",
info->line);
return;
}
printk(KERN_DEBUG
"isdn_audio: dtmf goertzel overflow, sk2=%d\n", sk2);
result[k] =
- ((sk * sk) >> AMP_BITS) -
- ((((cos2pik[k] * sk) >> 15) * sk2) >> AMP_BITS) +
- ((sk2 * sk2) >> AMP_BITS);
+ ((sk * sk) >> AMP_BITS) -
+ ((((cos2pik[k] * sk) >> 15) * sk2) >> AMP_BITS) +
+ ((sk2 * sk2) >> AMP_BITS);
}
skb_queue_tail(&info->dtmf_queue, skb);
isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
}
void
-isdn_audio_eval_dtmf(modem_info * info)
+isdn_audio_eval_dtmf(modem_info *info)
{
struct sk_buff *skb;
int *result;
* fmt = audio data format (0 = ulaw, 1 = alaw)
*/
void
-isdn_audio_calc_dtmf(modem_info * info, unsigned char *buf, int len, int fmt)
+isdn_audio_calc_dtmf(modem_info *info, unsigned char *buf, int len, int fmt)
{
dtmf_state *s = info->dtmf_state;
int i;
for (i = 0; i < c; i++) {
if (fmt)
s->buf[s->idx++] =
- isdn_audio_alaw_to_s16[*buf++] >> (15 - AMP_BITS);
+ isdn_audio_alaw_to_s16[*buf++] >> (15 - AMP_BITS);
else
s->buf[s->idx++] =
- isdn_audio_ulaw_to_s16[*buf++] >> (15 - AMP_BITS);
+ isdn_audio_ulaw_to_s16[*buf++] >> (15 - AMP_BITS);
}
if (s->idx == DTMF_NPOINTS) {
isdn_audio_goertzel(s->buf, info);
}
silence_state *
-isdn_audio_silence_init(silence_state * s)
+isdn_audio_silence_init(silence_state *s)
{
if (!s)
s = kmalloc(sizeof(silence_state), GFP_ATOMIC);
}
void
-isdn_audio_calc_silence(modem_info * info, unsigned char *buf, int len, int fmt)
+isdn_audio_calc_silence(modem_info *info, unsigned char *buf, int len, int fmt)
{
silence_state *s = info->silence_state;
int i;
for (i = 0; i < len; i++) {
if (fmt)
- c = isdn_audio_alaw_to_ulaw[*buf++];
- else
- c = *buf++;
+ c = isdn_audio_alaw_to_ulaw[*buf++];
+ else
+ c = *buf++;
if (c > 0) c -= 128;
c = abs(c);
- if (c > (info->emu.vpar[1] * 4)) {
+ if (c > (info->emu.vpar[1] * 4)) {
s->idx = 0;
- s->state = 1;
+ s->state = 1;
} else {
- if (s->idx < 210000) s->idx++;
+ if (s->idx < 210000) s->idx++;
}
}
}
void
-isdn_audio_put_dle_code(modem_info * info, u_char code)
+isdn_audio_put_dle_code(modem_info *info, u_char code)
{
struct sk_buff *skb;
int di;
skb = dev_alloc_skb(2);
if (!skb) {
printk(KERN_WARNING
- "isdn_audio: Could not alloc skb for ttyI%d\n",
+ "isdn_audio: Could not alloc skb for ttyI%d\n",
info->line);
return;
}
}
void
-isdn_audio_eval_silence(modem_info * info)
+isdn_audio_eval_silence(modem_info *info)
{
silence_state *s = info->silence_state;
char what;
what = ' ';
- if (s->idx > (info->emu.vpar[2] * 800)) {
+ if (s->idx > (info->emu.vpar[2] * 800)) {
s->idx = 0;
- if (!s->state) { /* silence from beginning of rec */
+ if (!s->state) { /* silence from beginning of rec */
what = 's';
} else {
what = 'q';
}
}
- if ((what == 's') || (what == 'q')) {
- printk(KERN_DEBUG "ttyI%d: %s\n", info->line,
- (what=='s') ? "silence":"quiet");
- isdn_audio_put_dle_code(info, what);
- }
+ if ((what == 's') || (what == 'q')) {
+ printk(KERN_DEBUG "ttyI%d: %s\n", info->line,
+ (what == 's') ? "silence" : "quiet");
+ isdn_audio_put_dle_code(info, what);
+ }
}
projects / ~andy / linux / blobdiff