488 lines
15 KiB
C
488 lines
15 KiB
C
/* $NetBSD: aurateconv.c,v 1.8 2002/11/07 06:51:51 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by TAMURA Kent
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: aurateconv.c,v 1.8 2002/11/07 06:51:51 thorpej Exp $");
|
|
|
|
#include <sys/systm.h>
|
|
#include <sys/types.h>
|
|
#include <sys/device.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/select.h>
|
|
#include <sys/audioio.h>
|
|
|
|
#include <dev/audio_if.h>
|
|
#include <dev/audiovar.h>
|
|
|
|
#undef AURATECONV_DEBUG
|
|
#ifdef AURATECONV_DEBUG
|
|
#define DPRINTF(x) printf x
|
|
#else
|
|
#define DPRINTF(x)
|
|
#endif
|
|
|
|
static int auconv_play_slinear16_LE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
static int auconv_play_slinear24_LE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
static int auconv_play_slinear16_BE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
static int auconv_play_slinear24_BE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
|
|
static int auconv_record_slinear16_LE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
static int auconv_record_slinear24_LE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
static int auconv_record_slinear16_BE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
static int auconv_record_slinear24_BE(struct auconv_context *,
|
|
const struct audio_params *, uint8_t *, const uint8_t *, int);
|
|
|
|
int
|
|
auconv_check_params(const struct audio_params *params)
|
|
{
|
|
DPRINTF(("auconv_check_params: rate=%ld:%ld chan=%d:%d prec=%d:%d "
|
|
"enc=%d:%d\n", params->sample_rate, params->hw_sample_rate,
|
|
params->channels, params->hw_channels, params->precision,
|
|
params->hw_precision, params->encoding, params->hw_encoding));
|
|
if (params->hw_channels == params->channels
|
|
&& params->hw_sample_rate == params->sample_rate)
|
|
return 0; /* No conversion */
|
|
|
|
if ((params->hw_encoding != AUDIO_ENCODING_SLINEAR_LE
|
|
&& params->hw_encoding != AUDIO_ENCODING_SLINEAR_BE)
|
|
|| (params->hw_precision != 16 && params->hw_precision != 24))
|
|
return (EINVAL);
|
|
|
|
if (params->hw_channels != params->channels) {
|
|
if (params->hw_channels == 1 && params->channels == 2) {
|
|
/* Ok */
|
|
} else if (params->hw_channels == 2 && params->channels == 1) {
|
|
/* Ok */
|
|
} else if (params->hw_channels > params->channels) {
|
|
/* Ok */
|
|
} else
|
|
return (EINVAL);
|
|
}
|
|
if (params->hw_channels > AUDIO_MAX_CHANNELS
|
|
|| params->channels > AUDIO_MAX_CHANNELS)
|
|
return (EINVAL);
|
|
|
|
if (params->hw_sample_rate != params->sample_rate)
|
|
if (params->hw_sample_rate <= 0 || params->sample_rate <= 0)
|
|
return (EINVAL);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
auconv_init_context(struct auconv_context *context, long src_rate,
|
|
long dst_rate, uint8_t *start, uint8_t *end)
|
|
{
|
|
int i;
|
|
|
|
context->ring_start = start;
|
|
context->ring_end = end;
|
|
if (dst_rate > src_rate) {
|
|
context->count = src_rate;
|
|
} else {
|
|
context->count = 0;
|
|
}
|
|
for (i = 0; i < AUDIO_MAX_CHANNELS; i++)
|
|
context->prev[i] = 0;
|
|
}
|
|
|
|
/*
|
|
* src is a ring buffer.
|
|
*/
|
|
int
|
|
auconv_record(struct auconv_context *context,
|
|
const struct audio_params *params, uint8_t *dest,
|
|
const uint8_t *src, int srcsize)
|
|
{
|
|
if (params->hw_sample_rate == params->sample_rate
|
|
&& params->hw_channels == params->channels) {
|
|
int n;
|
|
|
|
n = context->ring_end - src;
|
|
if (srcsize <= n)
|
|
memcpy(dest, src, srcsize);
|
|
else {
|
|
memcpy(dest, src, n);
|
|
memcpy(dest + n, context->ring_start, srcsize - n);
|
|
}
|
|
return srcsize;
|
|
}
|
|
|
|
switch (params->hw_encoding) {
|
|
case AUDIO_ENCODING_SLINEAR_LE:
|
|
switch (params->hw_precision) {
|
|
case 16:
|
|
return auconv_record_slinear16_LE(context, params,
|
|
dest, src, srcsize);
|
|
case 24:
|
|
return auconv_record_slinear24_LE(context, params,
|
|
dest, src, srcsize);
|
|
}
|
|
break;
|
|
case AUDIO_ENCODING_SLINEAR_BE:
|
|
switch (params->hw_precision) {
|
|
case 16:
|
|
return auconv_record_slinear16_BE(context, params,
|
|
dest, src, srcsize);
|
|
case 24:
|
|
return auconv_record_slinear24_BE(context, params,
|
|
dest, src, srcsize);
|
|
}
|
|
break;
|
|
default:
|
|
/* This should be rejected in auconv_check_params() */
|
|
printf("auconv_record: unimplemented encoding: %d\n",
|
|
params->hw_encoding);
|
|
return 0;
|
|
}
|
|
printf("auconv_record: unimplemented precision: %d\n",
|
|
params->hw_precision);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* dest is a ring buffer.
|
|
*/
|
|
int
|
|
auconv_play(struct auconv_context *context, const struct audio_params *params,
|
|
uint8_t *dest, const uint8_t *src, int srcsize)
|
|
{
|
|
int n;
|
|
|
|
if (params->hw_sample_rate == params->sample_rate
|
|
&& params->hw_channels == params->channels) {
|
|
n = context->ring_end - dest;
|
|
if (srcsize <= n) {
|
|
memcpy(dest, src, srcsize);
|
|
} else {
|
|
memcpy(dest, src, n);
|
|
memcpy(context->ring_start, src + n, srcsize - n);
|
|
}
|
|
return srcsize;
|
|
}
|
|
|
|
switch (params->hw_encoding) {
|
|
case AUDIO_ENCODING_SLINEAR_LE:
|
|
switch (params->hw_precision) {
|
|
case 16:
|
|
return auconv_play_slinear16_LE(context, params,
|
|
dest, src, srcsize);
|
|
case 24:
|
|
return auconv_play_slinear24_LE(context, params,
|
|
dest, src, srcsize);
|
|
}
|
|
break;
|
|
case AUDIO_ENCODING_SLINEAR_BE:
|
|
switch (params->hw_precision) {
|
|
case 16:
|
|
return auconv_play_slinear16_BE(context, params,
|
|
dest, src, srcsize);
|
|
case 24:
|
|
return auconv_play_slinear24_BE(context, params,
|
|
dest, src, srcsize);
|
|
}
|
|
break;
|
|
default:
|
|
/* This should be rejected in auconv_check_params() */
|
|
printf("auconv_play: unimplemented encoding: %d\n",
|
|
params->hw_encoding);
|
|
return 0;
|
|
}
|
|
printf("auconv_play: unimplemented precision: %d\n",
|
|
params->hw_precision);
|
|
return 0;
|
|
}
|
|
|
|
|
|
#define RING_CHECK(C, V) \
|
|
do { \
|
|
if (V >= (C)->ring_end) \
|
|
V = (C)->ring_start; \
|
|
} while (/*CONSTCOND*/ 0)
|
|
|
|
#define READ_S8LE(P) *(int8_t*)(P)
|
|
#define WRITE_S8LE(P, V) *(int8_t*)(P) = V
|
|
#define READ_S8BE(P) *(int8_t*)(P)
|
|
#define WRITE_S8BE(P, V) *(int8_t*)(P) = V
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
# define READ_S16LE(P) *(int16_t*)(P)
|
|
# define WRITE_S16LE(P, V) *(int16_t*)(P) = V
|
|
# define READ_S16BE(P) (int16_t)((P)[0] | ((P)[1]<<8))
|
|
# define WRITE_S16BE(P, V) \
|
|
do { \
|
|
int vv = V; \
|
|
(P)[0] = vv; \
|
|
(P)[1] = vv >> 8; \
|
|
} while (/*CONSTCOND*/ 0)
|
|
#else
|
|
# define READ_S16LE(P) (int16_t)((P)[0] | ((P)[1]<<8))
|
|
# define WRITE_S16LE(P, V) \
|
|
do { \
|
|
int vv = V; \
|
|
(P)[0] = vv; \
|
|
(P)[1] = vv >> 8; \
|
|
} while (/*CONSTCOND*/ 0)
|
|
# define READ_S16BE(P) *(int16_t*)(P)
|
|
# define WRITE_S16BE(P, V) *(int16_t*)(P) = V
|
|
#endif
|
|
#define READ_S24LE(P) (int32_t)((P)[0] | ((P)[1]<<8) | (((int8_t)((P)[2]))<<16))
|
|
#define WRITE_S24LE(P, V) \
|
|
do { \
|
|
int vvv = V; \
|
|
(P)[0] = vvv; \
|
|
(P)[1] = vvv >> 8; \
|
|
(P)[2] = vvv >> 16; \
|
|
} while (/*CONSTCOND*/ 0)
|
|
#define READ_S24BE(P) (int32_t)((P)[2] | ((P)[1]<<8) | (((int8_t)((P)[0]))<<16))
|
|
#define WRITE_S24BE(P, V) \
|
|
do { \
|
|
int vvv = V; \
|
|
(P)[0] = vvv >> 16; \
|
|
(P)[1] = vvv >> 8; \
|
|
(P)[2] = vvv; \
|
|
} while (/*CONSTCOND*/ 0)
|
|
|
|
#define P_READ_Sn(BITS, EN, V, RP, PAR) \
|
|
do { \
|
|
int j; \
|
|
for (j = 0; j < (PAR)->channels; j++) { \
|
|
(V)[j] = READ_S##BITS##EN(RP); \
|
|
RP += (BITS) / NBBY; \
|
|
} \
|
|
} while (/*CONSTCOND*/ 0)
|
|
#define P_WRITE_Sn(BITS, EN, V, WP, PAR, CON, WC) \
|
|
do { \
|
|
if ((PAR)->channels == 2 && (PAR)->hw_channels == 1) { \
|
|
WRITE_S##BITS##EN(WP, ((V)[0] + (V)[1]) / 2); \
|
|
WP += (BITS) / NBBY; \
|
|
RING_CHECK(CON, WP); \
|
|
WC += (BITS) / NBBY; \
|
|
} else { /* channels <= hw_channels */ \
|
|
int j; \
|
|
for (j = 0; j < (PAR)->channels; j++) { \
|
|
WRITE_S##BITS##EN(WP, (V)[j]); \
|
|
WP += (BITS) / NBBY; \
|
|
RING_CHECK(CON, WP); \
|
|
} \
|
|
if (j == 1 && 1 < (PAR)->hw_channels) { \
|
|
WRITE_S##BITS##EN(WP, (V)[0]); \
|
|
WP += (BITS) / NBBY; \
|
|
RING_CHECK(CON, WP); \
|
|
j++; \
|
|
} \
|
|
for (; j < (PAR)->hw_channels; j++) { \
|
|
WRITE_S##BITS##EN(WP, 0); \
|
|
WP += (BITS) / NBBY; \
|
|
RING_CHECK(CON, WP); \
|
|
} \
|
|
WC += (BITS) / NBBY * j; \
|
|
} \
|
|
} while (/*CONSTCOND*/ 0)
|
|
|
|
#define R_READ_Sn(BITS, EN, V, RP, PAR, CON, RC) \
|
|
do { \
|
|
int j; \
|
|
for (j = 0; j < (PAR)->hw_channels; j++) { \
|
|
(V)[j] = READ_S##BITS##EN(RP); \
|
|
RP += (BITS) / NBBY; \
|
|
RING_CHECK(CON, RP); \
|
|
RC += (BITS) / NBBY; \
|
|
} \
|
|
} while (/*CONSTCOND*/ 0)
|
|
#define R_WRITE_Sn(BITS, EN, V, WP, PAR, WC) \
|
|
do { \
|
|
if ((PAR)->channels == 2 && (PAR)->hw_channels == 1) { \
|
|
WRITE_S##BITS##EN(WP, (V)[0]); \
|
|
WP += (BITS) / NBBY; \
|
|
WRITE_S##BITS##EN(WP, (V)[0]); \
|
|
WP += (BITS) / NBBY; \
|
|
WC += (BITS) / NBBY * 2; \
|
|
} else if ((PAR)->channels == 1 && (PAR)->hw_channels >= 2) { \
|
|
WRITE_S##BITS##EN(WP, ((V)[0] + (V)[1]) / 2); \
|
|
WP += (BITS) / NBBY; \
|
|
WC += (BITS) / NBBY; \
|
|
} else { /* channels <= hw_channels */ \
|
|
int j; \
|
|
for (j = 0; j < (PAR)->channels; j++) { \
|
|
WRITE_S##BITS##EN(WP, (V)[j]); \
|
|
WP += (BITS) / NBBY; \
|
|
} \
|
|
WC += (BITS) / NBBY * j; \
|
|
} \
|
|
} while (/*CONSTCOND*/ 0)
|
|
|
|
/*
|
|
* Function templates
|
|
*
|
|
* Source may be 1 sample. Destination buffer must have space for converted
|
|
* source.
|
|
* Don't use them for 32bit data because this linear interpolation overflows
|
|
* for 32bit data.
|
|
*/
|
|
#define AUCONV_PLAY_SLINEAR(BITS, EN) \
|
|
static int \
|
|
auconv_play_slinear##BITS##_##EN (struct auconv_context *context, \
|
|
const struct audio_params *params, \
|
|
uint8_t *dest, const uint8_t *src, \
|
|
int srcsize) \
|
|
{ \
|
|
int wrote; \
|
|
uint8_t *w; \
|
|
const uint8_t *r; \
|
|
const uint8_t *src_end; \
|
|
int32_t v[AUDIO_MAX_CHANNELS]; \
|
|
int32_t prev[AUDIO_MAX_CHANNELS], next[AUDIO_MAX_CHANNELS], c256; \
|
|
int i, values_size; \
|
|
\
|
|
wrote = 0; \
|
|
w = dest; \
|
|
r = src; \
|
|
src_end = src + srcsize; \
|
|
if (params->sample_rate == params->hw_sample_rate) { \
|
|
while (r < src_end) { \
|
|
P_READ_Sn(BITS, EN, v, r, params); \
|
|
P_WRITE_Sn(BITS, EN, v, w, params, context, wrote); \
|
|
} \
|
|
} else if (params->hw_sample_rate < params->sample_rate) { \
|
|
for (;;) { \
|
|
do { \
|
|
if (r >= src_end) \
|
|
return wrote; \
|
|
P_READ_Sn(BITS, EN, v, r, params); \
|
|
context->count += params->hw_sample_rate; \
|
|
} while (context->count < params->sample_rate); \
|
|
context->count -= params->sample_rate; \
|
|
P_WRITE_Sn(BITS, EN, v, w, params, context, wrote); \
|
|
} \
|
|
} else { \
|
|
/* Initial value of context->count is params->sample_rate */ \
|
|
values_size = sizeof(int32_t) * params->channels; \
|
|
memcpy(prev, context->prev, values_size); \
|
|
P_READ_Sn(BITS, EN, next, r, params); \
|
|
for (;;) { \
|
|
c256 = context->count * 256 / params->hw_sample_rate; \
|
|
for (i = 0; i < params->channels; i++) \
|
|
v[i] = (c256 * next[i] + (256 - c256) * prev[i]) >> 8; \
|
|
P_WRITE_Sn(BITS, EN, v, w, params, context, wrote); \
|
|
context->count += params->sample_rate; \
|
|
if (context->count >= params->hw_sample_rate) { \
|
|
context->count -= params->hw_sample_rate; \
|
|
memcpy(prev, next, values_size); \
|
|
if (r >= src_end) \
|
|
break; \
|
|
P_READ_Sn(BITS, EN, next, r, params); \
|
|
} \
|
|
} \
|
|
memcpy(context->prev, next, values_size); \
|
|
} \
|
|
return wrote; \
|
|
}
|
|
|
|
#define AUCONV_RECORD_SLINEAR(BITS, EN) \
|
|
static int \
|
|
auconv_record_slinear##BITS##_##EN (struct auconv_context *context, \
|
|
const struct audio_params *params, \
|
|
uint8_t *dest, const uint8_t *src, \
|
|
int srcsize) \
|
|
{ \
|
|
int wrote, rsize; \
|
|
uint8_t *w; \
|
|
const uint8_t *r; \
|
|
int32_t v[AUDIO_MAX_CHANNELS]; \
|
|
int32_t prev[AUDIO_MAX_CHANNELS], next[AUDIO_MAX_CHANNELS], c256; \
|
|
int i, values_size; \
|
|
\
|
|
wrote = 0; \
|
|
rsize = 0; \
|
|
w = dest; \
|
|
r = src; \
|
|
if (params->sample_rate == params->hw_sample_rate) { \
|
|
while (rsize < srcsize) { \
|
|
R_READ_Sn(BITS, EN, v, r, params, context, rsize); \
|
|
R_WRITE_Sn(BITS, EN, v, w, params, wrote); \
|
|
} \
|
|
} else if (params->sample_rate < params->hw_sample_rate) { \
|
|
for (;;) { \
|
|
do { \
|
|
if (rsize >= srcsize) \
|
|
return wrote; \
|
|
R_READ_Sn(BITS, EN, v, r, params, context, rsize); \
|
|
context->count += params->sample_rate; \
|
|
} while (context->count < params->hw_sample_rate); \
|
|
context->count -= params->hw_sample_rate; \
|
|
R_WRITE_Sn(BITS, EN, v, w, params, wrote); \
|
|
} \
|
|
} else { \
|
|
/* Initial value of context->count is params->hw_sample_rate */ \
|
|
values_size = sizeof(int32_t) * params->hw_channels; \
|
|
memcpy(prev, context->prev, values_size); \
|
|
R_READ_Sn(BITS, EN, next, r, params, context, rsize); \
|
|
for (;;) { \
|
|
c256 = context->count * 256 / params->sample_rate; \
|
|
for (i = 0; i < params->hw_channels; i++) \
|
|
v[i] = (c256 * next[i] + (256 - c256) * prev[i]) >> 8; \
|
|
R_WRITE_Sn(BITS, EN, v, w, params, wrote); \
|
|
context->count += params->hw_sample_rate; \
|
|
if (context->count >= params->sample_rate) { \
|
|
context->count -= params->sample_rate; \
|
|
memcpy(prev, next, values_size); \
|
|
if (rsize >= srcsize) \
|
|
break; \
|
|
R_READ_Sn(BITS, EN, next, r, params, context, rsize); \
|
|
} \
|
|
} \
|
|
memcpy(context->prev, next, values_size); \
|
|
} \
|
|
return wrote; \
|
|
}
|
|
|
|
AUCONV_PLAY_SLINEAR(16, LE)
|
|
AUCONV_PLAY_SLINEAR(24, LE)
|
|
AUCONV_PLAY_SLINEAR(16, BE)
|
|
AUCONV_PLAY_SLINEAR(24, BE)
|
|
AUCONV_RECORD_SLINEAR(16, LE)
|
|
AUCONV_RECORD_SLINEAR(24, LE)
|
|
AUCONV_RECORD_SLINEAR(16, BE)
|
|
AUCONV_RECORD_SLINEAR(24, BE)
|