2002-03-17 14:36:37 +03:00
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/* $NetBSD: aurateconv.c,v 1.2 2002/03/17 11:36:37 kent Exp $ */
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2002-03-09 23:30:42 +03:00
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by TAMURA Kent
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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2002-03-17 14:36:37 +03:00
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__KERNEL_RCSID(0, "$NetBSD: aurateconv.c,v 1.2 2002/03/17 11:36:37 kent Exp $");
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2002-03-09 23:30:42 +03:00
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/audioio.h>
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2002-03-17 14:36:37 +03:00
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#include <dev/aurateconv.h>
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2002-03-09 23:30:42 +03:00
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#ifdef AURATECONV_DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x)
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#endif
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static int auconv_play_slinear16_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_play_slinear16_channels_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_play_slinear24_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_play_slinear24_channels_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_record_slinear16_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_record_slinear16_channels_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_record_slinear24_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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static int auconv_record_slinear24_channels_le(struct auconv_context *,
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const struct audio_params *, uint8_t *, const uint8_t *, int);
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int
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auconv_check_params(const struct audio_params *params)
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{
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DPRINTF(("auconv_check_params: rate=%ld:%ld chan=%d:%d prec=%d:%d "
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"enc=%d:%d\n", params->sample_rate, params->hw_sample_rate,
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params->channels, params->hw_channels, params->precision,
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params->hw_precision, params->encoding, params->hw_encoding));
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if (params->hw_channels == params->channels
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&& params->hw_sample_rate == params->sample_rate)
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return 0; /* No conversion */
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if (params->hw_encoding != AUDIO_ENCODING_SLINEAR_LE
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|| (params->hw_precision != 16 && params->hw_precision != 24))
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return (EINVAL);
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/* Only 1:2 or 2:1 */
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if (params->hw_channels != params->channels)
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if (!((params->hw_channels == 1 && params->channels == 2)
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|| (params->hw_channels == 2 && params->channels == 1)))
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return (EINVAL);
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if (params->hw_sample_rate != params->sample_rate)
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if (params->hw_sample_rate <= 0 || params->sample_rate <= 0)
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return (EINVAL);
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return 0;
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}
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void
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auconv_init_context(struct auconv_context *context, long src_rate,
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long dst_rate, uint8_t *start, uint8_t *end)
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{
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int i;
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context->ring_start = start;
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context->ring_end = end;
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if (dst_rate > src_rate) {
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context->count = src_rate;
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} else {
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context->count = 0;
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}
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for (i = 0; i < AUDIO_MAX_CHANNELS; i++)
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context->prev[i] = 0;
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}
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/*
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* src is a ring buffer.
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*/
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int
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auconv_record(struct auconv_context *context,
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const struct audio_params *params, uint8_t *dest,
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const uint8_t *src, int srcsize)
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{
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if (params->hw_sample_rate == params->sample_rate
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&& params->hw_channels == params->channels) {
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int n;
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n = context->ring_end - src;
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if (srcsize <= n)
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memcpy(dest, src, srcsize);
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else {
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memcpy(dest, src, n);
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memcpy(dest + n, context->ring_start, srcsize - n);
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}
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return srcsize;
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}
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if (params->hw_encoding != AUDIO_ENCODING_SLINEAR_LE) {
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/* This should be rejected in auconv_check_params() */
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printf("auconv_record: unimplemented encoding: %d\n",
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params->hw_encoding);
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return 0;
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}
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switch (params->hw_precision) {
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case 16:
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if (params->hw_channels != params->channels)
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return auconv_record_slinear16_channels_le(context,
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params, dest, src, srcsize);
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else
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return auconv_record_slinear16_le(context,
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params, dest, src, srcsize);
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case 24:
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if (params->hw_channels != params->channels)
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return auconv_record_slinear24_channels_le(context,
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params, dest, src, srcsize);
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else
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return auconv_record_slinear24_le(context,
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params, dest, src, srcsize);
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}
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printf("auconv_record: unimplemented precision: %d\n",
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params->hw_precision);
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return 0;
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}
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/*
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* dest is a ring buffer.
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*/
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int
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auconv_play(struct auconv_context *context, const struct audio_params *params,
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uint8_t *dest, const uint8_t *src, int srcsize)
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{
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int n;
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if (params->hw_sample_rate == params->sample_rate
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&& params->hw_channels == params->channels) {
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n = context->ring_end - dest;
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if (srcsize <= n) {
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memcpy(dest, src, srcsize);
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} else {
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memcpy(dest, src, n);
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memcpy(context->ring_start, src + n, srcsize - n);
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}
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return srcsize;
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}
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if (params->hw_encoding != AUDIO_ENCODING_SLINEAR_LE) {
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/* This should be rejected in auconv_check_params() */
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printf("auconv_play: unimplemented encoding: %d\n",
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params->hw_encoding);
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return 0;
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}
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switch (params->hw_precision) {
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case 16:
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if (params->hw_channels != params->channels)
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return auconv_play_slinear16_channels_le(context,
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params, dest, src, srcsize);
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else
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return auconv_play_slinear16_le(context,
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params, dest, src, srcsize);
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case 24:
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if (params->hw_channels != params->channels)
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return auconv_play_slinear24_channels_le(context,
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params, dest, src, srcsize);
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else
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return auconv_play_slinear24_le(context,
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params, dest, src, srcsize);
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}
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printf("auconv_play: unimplemented precision: %d\n",
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params->hw_precision);
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return 0;
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}
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#define RING_CHECK(C, V) \
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do { \
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if (V >= (C)->ring_end) \
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V = (C)->ring_start; \
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} while (0)
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#if BYTE_ORDER == LITTLE_ENDIAN
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# define READ_S16LE(P) *(int16_t*)(P)
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# define WRITE_S16LE(P, V) *(int16_t*)(P) = V
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#else
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# define READ_S16LE(P) (int16_t)((P)[0] | ((P)[1]<<8))
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# define WRITE_S16LE(P, V) \
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do { \
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int vv = V; \
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(P)[0] = vv; \
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(P)[1] = vv >> 8; \
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} while (0)
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#endif
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#define READ_S24LE(P) (int32_t)((P)[0] | ((P)[1]<<8) | (((int8_t)((P)[2]))<<16))
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#define WRITE_S24LE(P, V) \
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do { \
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int vvv = V; \
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(P)[0] = vvv; \
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(P)[1] = vvv >> 8; \
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(P)[2] = vvv >> 16; \
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} while (0)
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#define P_READ_LR_S16LE(LV, RV, RP, PAR) \
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do { \
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LV = READ_S16LE(RP); \
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RP += sizeof(int16_t); \
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if ((PAR)->channels == 1) \
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RV = LV; \
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else { \
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RV = READ_S16LE(RP); \
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RP += sizeof(int16_t); \
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} \
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} while (0)
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#define P_WRITE_LR_S16LE(LV, RV, WP, PAR, CON, WC) \
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do { \
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if ((PAR)->hw_channels == 1) { \
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WRITE_S16LE(WP, (LV + RV) / 2); \
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WP += sizeof(int16_t); \
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WC += sizeof(int16_t); \
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} else { \
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WRITE_S16LE(WP, LV); \
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WP += sizeof(int16_t); \
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RING_CHECK(CON, WP); \
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WRITE_S16LE(WP, RV); \
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WP += sizeof(int16_t); \
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WC += sizeof(int16_t) * 2; \
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} \
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RING_CHECK(CON, WP); \
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} while (0)
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#define P_READ_N_S16LE(V, RP, PAR) \
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do { \
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int i; \
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for (i = 0; i < (PAR)->channels; i++) { \
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(V)[i] = READ_S16LE(RP); \
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RP += sizeof(int16_t); \
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} \
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} while (0)
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#define P_WRITE_N_S16LE(V, WP, PAR, CON, WC) \
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do { \
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int i; \
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for (i = 0; i < (PAR)->channels; i++) { \
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WRITE_S16LE(WP, (V)[i]); \
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WP += sizeof(int16_t); \
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RING_CHECK(CON, WP); \
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} \
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WC += sizeof(int16_t) * i; \
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} while (0)
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#define P_READ_LR_S24LE(LV, RV, RP, PAR) \
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do { \
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LV = READ_S24LE(RP); \
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RP += 3; \
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if ((PAR)->channels == 1) \
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RV = LV; \
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else { \
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RV = READ_S24LE(RP); \
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RP += 3; \
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} \
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} while (0)
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#define P_WRITE_LR_S24LE(LV, RV, WP, PAR, CON, WC) \
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do { \
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if ((PAR)->hw_channels == 1) { \
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WRITE_S24LE(WP, (LV + RV) / 2); \
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WP += 3; \
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WC += 3; \
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} else { \
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WRITE_S24LE(WP, LV); \
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WP += 3; \
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RING_CHECK(CON, WP); \
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WRITE_S24LE(WP, RV); \
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WP += 3; \
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|
|
|
WC += 3 * 2; \
|
|
|
|
|
} \
|
|
|
|
|
RING_CHECK(CON, WP); \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define P_READ_N_S24LE(V, RP, PAR) \
|
|
|
|
|
do { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i < (PAR)->channels; i++) { \
|
|
|
|
|
(V)[i] = READ_S24LE(RP); \
|
|
|
|
|
RP += 3; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define P_WRITE_N_S24LE(V, WP, PAR, CON, WC) \
|
|
|
|
|
do { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i < (PAR)->channels; i++) { \
|
|
|
|
|
WRITE_S24LE(WP, (V)[i]); \
|
|
|
|
|
WP += 3; \
|
|
|
|
|
RING_CHECK(CON, WP); \
|
|
|
|
|
} \
|
|
|
|
|
WC += 3 * i; \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define R_READ_LR_S16LE(LV, RV, RP, PAR, CON, RC) \
|
|
|
|
|
do { \
|
|
|
|
|
LV = READ_S16LE(RP); \
|
|
|
|
|
RP += sizeof(int16_t); \
|
|
|
|
|
RING_CHECK(CON, RP); \
|
|
|
|
|
RC += sizeof(int16_t); \
|
|
|
|
|
if ((PAR)->hw_channels == 1) \
|
|
|
|
|
RV = LV; \
|
|
|
|
|
else { \
|
|
|
|
|
RV = READ_S16LE(RP); \
|
|
|
|
|
RP += sizeof(int16_t); \
|
|
|
|
|
RING_CHECK(CON, RP); \
|
|
|
|
|
RC += sizeof(int16_t); \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_WRITE_LR_S16LE(LV, RV, WP, PAR, WC) \
|
|
|
|
|
do { \
|
|
|
|
|
if ((PAR)->channels == 1) { \
|
|
|
|
|
WRITE_S16LE(WP, (LV + RV) / 2); \
|
|
|
|
|
WP += sizeof(int16_t); \
|
|
|
|
|
WC += sizeof(int16_t); \
|
|
|
|
|
} else { \
|
|
|
|
|
WRITE_S16LE(WP, LV); \
|
|
|
|
|
WP += sizeof(int16_t); \
|
|
|
|
|
WRITE_S16LE(WP, RV); \
|
|
|
|
|
WP += sizeof(int16_t); \
|
|
|
|
|
WC += sizeof(int16_t) * 2; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_READ_N_S16LE(V, RP, PAR, CON, RC) \
|
|
|
|
|
do { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i < (PAR)->channels; i++) { \
|
|
|
|
|
(V)[i] = READ_S16LE(RP); \
|
|
|
|
|
RP += sizeof(int16_t); \
|
|
|
|
|
RING_CHECK(CON, RP); \
|
|
|
|
|
RC += sizeof(int16_t); \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_WRITE_N_S16LE(V, WP, PAR, WC) \
|
|
|
|
|
do { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i < (PAR)->channels; i++) { \
|
|
|
|
|
WRITE_S16LE(WP, (V)[i]); \
|
|
|
|
|
WP += sizeof(int16_t); \
|
|
|
|
|
} \
|
|
|
|
|
WC += sizeof(int16_t) * i; \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_READ_LR_S24LE(LV, RV, RP, PAR, CON, RC) \
|
|
|
|
|
do { \
|
|
|
|
|
LV = READ_S24LE(RP); \
|
|
|
|
|
RP += 3; \
|
|
|
|
|
RING_CHECK(CON, RP); \
|
|
|
|
|
RC += 3; \
|
|
|
|
|
if ((PAR)->hw_channels == 1) \
|
|
|
|
|
RV = LV; \
|
|
|
|
|
else { \
|
|
|
|
|
RV = READ_S24LE(RP); \
|
|
|
|
|
RP += 3; \
|
|
|
|
|
RING_CHECK(CON, RP); \
|
|
|
|
|
RC += 3; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_WRITE_LR_S24LE(LV, RV, WP, PAR, WC) \
|
|
|
|
|
do { \
|
|
|
|
|
if ((PAR)->channels == 1) { \
|
|
|
|
|
WRITE_S24LE(WP, (LV + RV) / 2); \
|
|
|
|
|
WP += 3; \
|
|
|
|
|
WC += 3; \
|
|
|
|
|
} else { \
|
|
|
|
|
WRITE_S24LE(WP, LV); \
|
|
|
|
|
WP += 3; \
|
|
|
|
|
WRITE_S24LE(WP, RV); \
|
|
|
|
|
WP += 3; \
|
|
|
|
|
WC += 3 * 2; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_READ_N_S24LE(V, RP, PAR, CON, RC) \
|
|
|
|
|
do { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i < (PAR)->channels; i++) { \
|
|
|
|
|
(V)[i] = READ_S24LE(RP); \
|
|
|
|
|
RP += 3; \
|
|
|
|
|
RING_CHECK(CON, RP); \
|
|
|
|
|
RC += 3; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define R_WRITE_N_S24LE(V, WP, PAR, WC) \
|
|
|
|
|
do { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i < (PAR)->channels; i++) { \
|
|
|
|
|
WRITE_S24LE(WP, (V)[i]); \
|
|
|
|
|
WP += 3; \
|
|
|
|
|
} \
|
|
|
|
|
WC += 3 * i; \
|
|
|
|
|
} while (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_CHANNELS_LE(BITS) \
|
|
|
|
|
static int \
|
|
|
|
|
auconv_play_slinear##BITS##_channels_le(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; \
|
|
|
|
|
register int32_t lv, rv; \
|
|
|
|
|
int32_t prev_l, prev_r, next_l, next_r, c256; \
|
|
|
|
|
\
|
|
|
|
|
wrote = 0; \
|
|
|
|
|
w = dest; \
|
|
|
|
|
r = src; \
|
|
|
|
|
src_end = src + srcsize; \
|
|
|
|
|
if (params->sample_rate == params->hw_sample_rate) { \
|
|
|
|
|
while (r < src_end) { \
|
|
|
|
|
P_READ_LR_S##BITS##LE(lv, rv, r, params); \
|
|
|
|
|
P_WRITE_LR_S##BITS##LE(lv, rv, w, params, context, wrote); \
|
|
|
|
|
} \
|
|
|
|
|
} else if (params->hw_sample_rate < params->sample_rate) { \
|
|
|
|
|
for (;;) { \
|
|
|
|
|
do { \
|
|
|
|
|
if (r >= src_end) \
|
|
|
|
|
return wrote; \
|
|
|
|
|
P_READ_LR_S##BITS##LE(lv, rv, r, params); \
|
|
|
|
|
context->count += params->hw_sample_rate; \
|
|
|
|
|
} while (context->count < params->sample_rate); \
|
|
|
|
|
context->count -= params->sample_rate; \
|
|
|
|
|
P_WRITE_LR_S##BITS##LE(lv, rv, w, params, context, wrote); \
|
|
|
|
|
} \
|
|
|
|
|
} else { \
|
|
|
|
|
/* Initial value of context->count is params->sample_rate */ \
|
|
|
|
|
prev_l = context->prev[0]; \
|
|
|
|
|
prev_r = context->prev[1]; \
|
|
|
|
|
P_READ_LR_S##BITS##LE(next_l, next_r, r, params); \
|
|
|
|
|
for (;;) { \
|
|
|
|
|
c256 = context->count * 256 / params->hw_sample_rate; \
|
|
|
|
|
lv = (c256 * next_l + (256 - c256) * prev_l) >> 8; \
|
|
|
|
|
rv = (c256 * next_r + (256 - c256) * prev_r) >> 8; \
|
|
|
|
|
P_WRITE_LR_S##BITS##LE(lv, rv, w, params, context, wrote); \
|
|
|
|
|
context->count += params->sample_rate; \
|
|
|
|
|
if (context->count >= params->hw_sample_rate) { \
|
|
|
|
|
context->count -= params->hw_sample_rate; \
|
|
|
|
|
prev_l = next_l; \
|
|
|
|
|
prev_r = next_r; \
|
|
|
|
|
if (r >= src_end) \
|
|
|
|
|
break; \
|
|
|
|
|
P_READ_LR_S##BITS##LE(next_l, next_r, r, params); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
context->prev[0] = next_l; \
|
|
|
|
|
context->prev[1] = next_r; \
|
|
|
|
|
} \
|
|
|
|
|
return wrote; \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define AUCONV_PLAY_SLINEAR_LE(BITS) \
|
|
|
|
|
static int \
|
|
|
|
|
auconv_play_slinear##BITS##_le(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_N_S##BITS##LE(v, r, params); \
|
|
|
|
|
P_WRITE_N_S##BITS##LE(v, w, params, context, wrote); \
|
|
|
|
|
} \
|
|
|
|
|
} else if (params->hw_sample_rate < params->sample_rate) { \
|
|
|
|
|
for (;;) { \
|
|
|
|
|
do { \
|
|
|
|
|
if (r >= src_end) \
|
|
|
|
|
return wrote; \
|
|
|
|
|
P_READ_N_S##BITS##LE(v, r, params); \
|
|
|
|
|
context->count += params->hw_sample_rate; \
|
|
|
|
|
} while (context->count < params->sample_rate); \
|
|
|
|
|
context->count -= params->sample_rate; \
|
|
|
|
|
P_WRITE_N_S##BITS##LE(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_N_S##BITS##LE(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_N_S##BITS##LE(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_N_S##BITS##LE(next, r, params); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
memcpy(context->prev, next, values_size); \
|
|
|
|
|
} \
|
|
|
|
|
return wrote; \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define AUCONV_RECORD_SLINEAR_CHANNELS_LE(BITS) \
|
|
|
|
|
static int \
|
|
|
|
|
auconv_record_slinear##BITS##_channels_le(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; \
|
|
|
|
|
register int32_t lv, rv; \
|
|
|
|
|
int32_t prev_l, prev_r, next_l, next_r, c256; \
|
|
|
|
|
\
|
|
|
|
|
wrote = 0; \
|
|
|
|
|
rsize = 0; \
|
|
|
|
|
w = dest; \
|
|
|
|
|
r = src; \
|
|
|
|
|
if (params->sample_rate == params->hw_sample_rate) { \
|
|
|
|
|
while (rsize < srcsize) { \
|
|
|
|
|
R_READ_LR_S##BITS##LE(lv, rv, r, params, context, rsize); \
|
|
|
|
|
R_WRITE_LR_S##BITS##LE(lv, rv, w, params, wrote); \
|
|
|
|
|
} \
|
|
|
|
|
} else if (params->sample_rate < params->hw_sample_rate) { \
|
|
|
|
|
for (;;) { \
|
|
|
|
|
do { \
|
|
|
|
|
if (rsize >= srcsize) \
|
|
|
|
|
return wrote; \
|
|
|
|
|
R_READ_LR_S##BITS##LE(lv, rv, r, params, \
|
|
|
|
|
context, rsize); \
|
|
|
|
|
context->count += params->sample_rate; \
|
|
|
|
|
} while (context->count < params->hw_sample_rate); \
|
|
|
|
|
context->count -= params->hw_sample_rate; \
|
|
|
|
|
R_WRITE_LR_S##BITS##LE(lv, rv, w, params, wrote); \
|
|
|
|
|
} \
|
|
|
|
|
} else { \
|
|
|
|
|
/* Initial value of context->count is params->hw_sample_rate */ \
|
|
|
|
|
prev_l = context->prev[0]; \
|
|
|
|
|
prev_r = context->prev[1]; \
|
|
|
|
|
R_READ_LR_S##BITS##LE(next_l, next_r, r, params, context, rsize); \
|
|
|
|
|
for (;;) { \
|
|
|
|
|
c256 = context->count * 256 / params->sample_rate; \
|
|
|
|
|
lv = (c256 * next_l + (256 - c256) * prev_l) >> 8; \
|
|
|
|
|
rv = (c256 * next_r + (256 - c256) * prev_r) >> 8; \
|
|
|
|
|
R_WRITE_LR_S##BITS##LE(lv, rv, w, params, wrote); \
|
|
|
|
|
context->count += params->hw_sample_rate; \
|
|
|
|
|
if (context->count >= params->sample_rate) { \
|
|
|
|
|
context->count -= params->sample_rate; \
|
|
|
|
|
prev_l = next_l; \
|
|
|
|
|
prev_r = next_r; \
|
|
|
|
|
if (rsize >= srcsize) \
|
|
|
|
|
break; \
|
|
|
|
|
R_READ_LR_S##BITS##LE(next_l, next_r, r, \
|
|
|
|
|
params, context, rsize); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
context->prev[0] = next_l; \
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context->prev[1] = next_r; \
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} \
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return wrote; \
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}
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#define AUCONV_RECORD_SLINEAR_LE(BITS) \
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static int \
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auconv_record_slinear##BITS##_le(struct auconv_context *context, \
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|
const struct audio_params *params, \
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|
uint8_t *dest, const uint8_t *src, \
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int srcsize) \
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|
{ \
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int wrote, rsize; \
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|
uint8_t *w; \
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|
const uint8_t *r; \
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|
int32_t v[AUDIO_MAX_CHANNELS]; \
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|
int32_t prev[AUDIO_MAX_CHANNELS], next[AUDIO_MAX_CHANNELS], c256; \
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|
|
int i, values_size; \
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\
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wrote = 0; \
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rsize = 0; \
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|
w = dest; \
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|
r = src; \
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|
|
if (params->sample_rate == params->hw_sample_rate) { \
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|
|
while (rsize < srcsize) { \
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|
R_READ_N_S##BITS##LE(v, r, params, context, rsize); \
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R_WRITE_N_S##BITS##LE(v, w, params, wrote); \
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} \
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|
|
} else if (params->sample_rate < params->hw_sample_rate) { \
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|
for (;;) { \
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|
do { \
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|
|
if (rsize >= srcsize) \
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|
|
return wrote; \
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|
|
R_READ_N_S##BITS##LE(v, r, params, context, rsize); \
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|
|
|
context->count += params->sample_rate; \
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|
|
|
} while (context->count < params->hw_sample_rate); \
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|
|
context->count -= params->hw_sample_rate; \
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|
|
R_WRITE_N_S##BITS##LE(v, w, params, wrote); \
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|
|
} \
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|
|
} else { \
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|
|
/* Initial value of context->count is params->hw_sample_rate */ \
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|
|
values_size = sizeof(int32_t) * params->channels; \
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|
|
|
memcpy(prev, context->prev, values_size); \
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|
|
|
|
R_READ_N_S##BITS##LE(next, r, params, context, rsize); \
|
|
|
|
|
for (;;) { \
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|
|
|
|
c256 = context->count * 256 / params->sample_rate; \
|
|
|
|
|
for (i = 0; i < params->channels; i++) \
|
|
|
|
|
v[i] = (c256 * next[i] + (256 - c256) * prev[i]) >> 8; \
|
|
|
|
|
R_WRITE_N_S##BITS##LE(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_N_S##BITS##LE(next, r, params, context, rsize); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
memcpy(context->prev, next, values_size); \
|
|
|
|
|
} \
|
|
|
|
|
return wrote; \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
AUCONV_PLAY_SLINEAR_LE(16)
|
|
|
|
|
AUCONV_PLAY_SLINEAR_LE(24)
|
|
|
|
|
AUCONV_PLAY_SLINEAR_CHANNELS_LE(16)
|
|
|
|
|
AUCONV_PLAY_SLINEAR_CHANNELS_LE(24)
|
|
|
|
|
AUCONV_RECORD_SLINEAR_LE(16)
|
|
|
|
|
AUCONV_RECORD_SLINEAR_LE(24)
|
|
|
|
|
AUCONV_RECORD_SLINEAR_CHANNELS_LE(16)
|
|
|
|
|
AUCONV_RECORD_SLINEAR_CHANNELS_LE(24)
|
