718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
344 lines
8.7 KiB
C
344 lines
8.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* feeder_volume, a long 'Lost Technology' rather than a new feature. */
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#ifdef _KERNEL
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#ifdef HAVE_KERNEL_OPTION_HEADERS
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#include "opt_snd.h"
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#endif
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#include <dev/sound/pcm/sound.h>
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#include <dev/sound/pcm/pcm.h>
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#include "feeder_if.h"
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#define SND_USE_FXDIV
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#include "snd_fxdiv_gen.h"
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SND_DECLARE_FILE("$FreeBSD$");
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#endif
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typedef void (*feed_volume_t)(int *, int *, uint32_t, uint8_t *, uint32_t);
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#define FEEDVOLUME_CALC8(s, v) (SND_VOL_CALC_SAMPLE((intpcm_t) \
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(s) << 8, v) >> 8)
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#define FEEDVOLUME_CALC16(s, v) SND_VOL_CALC_SAMPLE((intpcm_t)(s), v)
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#define FEEDVOLUME_CALC24(s, v) SND_VOL_CALC_SAMPLE((intpcm64_t)(s), v)
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#define FEEDVOLUME_CALC32(s, v) SND_VOL_CALC_SAMPLE((intpcm64_t)(s), v)
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#define FEEDVOLUME_DECLARE(SIGN, BIT, ENDIAN) \
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static void \
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feed_volume_##SIGN##BIT##ENDIAN(int *vol, int *matrix, \
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uint32_t channels, uint8_t *dst, uint32_t count) \
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{ \
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intpcm##BIT##_t v; \
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intpcm_t x; \
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uint32_t i; \
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\
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dst += count * PCM_##BIT##_BPS * channels; \
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do { \
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i = channels; \
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do { \
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dst -= PCM_##BIT##_BPS; \
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i--; \
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x = PCM_READ_##SIGN##BIT##_##ENDIAN(dst); \
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v = FEEDVOLUME_CALC##BIT(x, vol[matrix[i]]); \
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x = PCM_CLAMP_##SIGN##BIT(v); \
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_PCM_WRITE_##SIGN##BIT##_##ENDIAN(dst, x); \
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} while (i != 0); \
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} while (--count != 0); \
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}
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#if BYTE_ORDER == LITTLE_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
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FEEDVOLUME_DECLARE(S, 16, LE)
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FEEDVOLUME_DECLARE(S, 32, LE)
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#endif
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#if BYTE_ORDER == BIG_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
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FEEDVOLUME_DECLARE(S, 16, BE)
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FEEDVOLUME_DECLARE(S, 32, BE)
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#endif
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#ifdef SND_FEEDER_MULTIFORMAT
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FEEDVOLUME_DECLARE(S, 8, NE)
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FEEDVOLUME_DECLARE(S, 24, LE)
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FEEDVOLUME_DECLARE(S, 24, BE)
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FEEDVOLUME_DECLARE(U, 8, NE)
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FEEDVOLUME_DECLARE(U, 16, LE)
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FEEDVOLUME_DECLARE(U, 24, LE)
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FEEDVOLUME_DECLARE(U, 32, LE)
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FEEDVOLUME_DECLARE(U, 16, BE)
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FEEDVOLUME_DECLARE(U, 24, BE)
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FEEDVOLUME_DECLARE(U, 32, BE)
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#endif
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struct feed_volume_info {
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uint32_t bps, channels;
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feed_volume_t apply;
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int volume_class;
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int state;
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int matrix[SND_CHN_MAX];
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};
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#define FEEDVOLUME_ENTRY(SIGN, BIT, ENDIAN) \
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{ \
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AFMT_##SIGN##BIT##_##ENDIAN, \
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feed_volume_##SIGN##BIT##ENDIAN \
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}
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static const struct {
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uint32_t format;
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feed_volume_t apply;
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} feed_volume_info_tab[] = {
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#if BYTE_ORDER == LITTLE_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
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FEEDVOLUME_ENTRY(S, 16, LE),
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FEEDVOLUME_ENTRY(S, 32, LE),
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#endif
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#if BYTE_ORDER == BIG_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
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FEEDVOLUME_ENTRY(S, 16, BE),
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FEEDVOLUME_ENTRY(S, 32, BE),
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#endif
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#ifdef SND_FEEDER_MULTIFORMAT
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FEEDVOLUME_ENTRY(S, 8, NE),
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FEEDVOLUME_ENTRY(S, 24, LE),
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FEEDVOLUME_ENTRY(S, 24, BE),
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FEEDVOLUME_ENTRY(U, 8, NE),
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FEEDVOLUME_ENTRY(U, 16, LE),
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FEEDVOLUME_ENTRY(U, 24, LE),
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FEEDVOLUME_ENTRY(U, 32, LE),
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FEEDVOLUME_ENTRY(U, 16, BE),
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FEEDVOLUME_ENTRY(U, 24, BE),
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FEEDVOLUME_ENTRY(U, 32, BE)
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#endif
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};
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#define FEEDVOLUME_TAB_SIZE ((int32_t) \
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(sizeof(feed_volume_info_tab) / \
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sizeof(feed_volume_info_tab[0])))
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static int
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feed_volume_init(struct pcm_feeder *f)
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{
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struct feed_volume_info *info;
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struct pcmchan_matrix *m;
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uint32_t i;
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int ret;
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if (f->desc->in != f->desc->out ||
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AFMT_CHANNEL(f->desc->in) > SND_CHN_MAX)
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return (EINVAL);
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for (i = 0; i < FEEDVOLUME_TAB_SIZE; i++) {
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if (AFMT_ENCODING(f->desc->in) ==
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feed_volume_info_tab[i].format) {
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info = malloc(sizeof(*info), M_DEVBUF,
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M_NOWAIT | M_ZERO);
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if (info == NULL)
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return (ENOMEM);
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info->bps = AFMT_BPS(f->desc->in);
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info->channels = AFMT_CHANNEL(f->desc->in);
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info->apply = feed_volume_info_tab[i].apply;
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info->volume_class = SND_VOL_C_PCM;
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info->state = FEEDVOLUME_ENABLE;
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f->data = info;
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m = feeder_matrix_default_channel_map(info->channels);
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if (m == NULL) {
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free(info, M_DEVBUF);
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return (EINVAL);
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}
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ret = feeder_volume_apply_matrix(f, m);
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if (ret != 0)
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free(info, M_DEVBUF);
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return (ret);
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}
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}
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return (EINVAL);
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}
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static int
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feed_volume_free(struct pcm_feeder *f)
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{
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struct feed_volume_info *info;
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info = f->data;
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if (info != NULL)
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free(info, M_DEVBUF);
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f->data = NULL;
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return (0);
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}
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static int
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feed_volume_set(struct pcm_feeder *f, int what, int value)
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{
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struct feed_volume_info *info;
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struct pcmchan_matrix *m;
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int ret;
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info = f->data;
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ret = 0;
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switch (what) {
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case FEEDVOLUME_CLASS:
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if (value < SND_VOL_C_BEGIN || value > SND_VOL_C_END)
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return (EINVAL);
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info->volume_class = value;
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break;
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case FEEDVOLUME_CHANNELS:
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if (value < SND_CHN_MIN || value > SND_CHN_MAX)
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return (EINVAL);
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m = feeder_matrix_default_channel_map(value);
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if (m == NULL)
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return (EINVAL);
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ret = feeder_volume_apply_matrix(f, m);
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break;
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case FEEDVOLUME_STATE:
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if (!(value == FEEDVOLUME_ENABLE || value == FEEDVOLUME_BYPASS))
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return (EINVAL);
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info->state = value;
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break;
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default:
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return (EINVAL);
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break;
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}
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return (ret);
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}
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static int
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feed_volume_feed(struct pcm_feeder *f, struct pcm_channel *c, uint8_t *b,
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uint32_t count, void *source)
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{
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struct feed_volume_info *info;
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uint32_t j, align;
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int i, *vol, *matrix;
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uint8_t *dst;
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/*
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* Fetch filter data operation.
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*/
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info = f->data;
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if (info->state == FEEDVOLUME_BYPASS)
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return (FEEDER_FEED(f->source, c, b, count, source));
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vol = c->volume[SND_VOL_C_VAL(info->volume_class)];
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matrix = info->matrix;
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/*
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* First, let see if we really need to apply gain at all.
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*/
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j = 0;
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i = info->channels;
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do {
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if (vol[matrix[--i]] != SND_VOL_FLAT) {
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j = 1;
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break;
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}
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} while (i != 0);
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/* Nope, just bypass entirely. */
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if (j == 0)
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return (FEEDER_FEED(f->source, c, b, count, source));
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dst = b;
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align = info->bps * info->channels;
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do {
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if (count < align)
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break;
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j = SND_FXDIV(FEEDER_FEED(f->source, c, dst, count, source),
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align);
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if (j == 0)
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break;
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info->apply(vol, matrix, info->channels, dst, j);
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j *= align;
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dst += j;
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count -= j;
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} while (count != 0);
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return (dst - b);
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}
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static struct pcm_feederdesc feeder_volume_desc[] = {
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{ FEEDER_VOLUME, 0, 0, 0, 0 },
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{ 0, 0, 0, 0, 0 }
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};
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static kobj_method_t feeder_volume_methods[] = {
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KOBJMETHOD(feeder_init, feed_volume_init),
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KOBJMETHOD(feeder_free, feed_volume_free),
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KOBJMETHOD(feeder_set, feed_volume_set),
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KOBJMETHOD(feeder_feed, feed_volume_feed),
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KOBJMETHOD_END
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};
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FEEDER_DECLARE(feeder_volume, NULL);
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/* Extern */
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/*
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* feeder_volume_apply_matrix(): For given matrix map, apply its configuration
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* to feeder_volume matrix structure. There are
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* possibilites that feeder_volume be inserted
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* before or after feeder_matrix, which in this
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* case feeder_volume must be in a good terms
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* with _current_ matrix.
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*/
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int
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feeder_volume_apply_matrix(struct pcm_feeder *f, struct pcmchan_matrix *m)
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{
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struct feed_volume_info *info;
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uint32_t i;
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if (f == NULL || f->desc == NULL || f->desc->type != FEEDER_VOLUME ||
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f->data == NULL || m == NULL || m->channels < SND_CHN_MIN ||
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m->channels > SND_CHN_MAX)
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return (EINVAL);
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info = f->data;
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for (i = 0; i < (sizeof(info->matrix) / sizeof(info->matrix[0])); i++) {
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if (i < m->channels)
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info->matrix[i] = m->map[i].type;
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else
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info->matrix[i] = SND_CHN_T_FL;
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}
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info->channels = m->channels;
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return (0);
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}
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