1537078d8f
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.
303 lines
6.9 KiB
C
303 lines
6.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008-2009 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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/*
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* feeder_format: New generation of generic, any-to-any format converter, as
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* long as the sample values can be read _and_ write.
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*/
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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 <dev/sound/pcm/g711.h>
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#include <dev/sound/pcm/intpcm.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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#define FEEDFORMAT_RESERVOIR (SND_CHN_MAX * PCM_32_BPS)
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INTPCM_DECLARE(intpcm_conv_tables)
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struct feed_format_info {
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uint32_t ibps, obps;
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uint32_t ialign, oalign, channels;
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intpcm_read_t *read;
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intpcm_write_t *write;
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uint8_t reservoir[FEEDFORMAT_RESERVOIR];
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};
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/*
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* dummy ac3/dts passthrough, etc.
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* XXX assume as s16le.
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*/
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static __inline intpcm_t
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intpcm_read_null(uint8_t *src __unused)
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{
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return (0);
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}
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static __inline void
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intpcm_write_null(uint8_t *dst, intpcm_t v __unused)
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{
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_PCM_WRITE_S16_LE(dst, 0);
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}
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#define FEEDFORMAT_ENTRY(SIGN, BIT, ENDIAN) \
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{ \
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AFMT_##SIGN##BIT##_##ENDIAN, \
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intpcm_read_##SIGN##BIT##ENDIAN, \
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intpcm_write_##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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intpcm_read_t *read;
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intpcm_write_t *write;
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} feed_format_ops[] = {
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FEEDFORMAT_ENTRY(S, 8, NE),
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FEEDFORMAT_ENTRY(S, 16, LE),
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FEEDFORMAT_ENTRY(S, 24, LE),
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FEEDFORMAT_ENTRY(S, 32, LE),
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FEEDFORMAT_ENTRY(S, 16, BE),
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FEEDFORMAT_ENTRY(S, 24, BE),
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FEEDFORMAT_ENTRY(S, 32, BE),
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FEEDFORMAT_ENTRY(U, 8, NE),
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FEEDFORMAT_ENTRY(U, 16, LE),
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FEEDFORMAT_ENTRY(U, 24, LE),
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FEEDFORMAT_ENTRY(U, 32, LE),
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FEEDFORMAT_ENTRY(U, 16, BE),
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FEEDFORMAT_ENTRY(U, 24, BE),
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FEEDFORMAT_ENTRY(U, 32, BE),
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{
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AFMT_MU_LAW,
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intpcm_read_ulaw, intpcm_write_ulaw
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},
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{
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AFMT_A_LAW,
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intpcm_read_alaw, intpcm_write_alaw
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},
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{
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AFMT_AC3,
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intpcm_read_null, intpcm_write_null
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}
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};
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#define FEEDFORMAT_TAB_SIZE \
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((int32_t)(sizeof(feed_format_ops) / sizeof(feed_format_ops[0])))
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static int
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feed_format_init(struct pcm_feeder *f)
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{
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struct feed_format_info *info;
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intpcm_read_t *rd_op;
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intpcm_write_t *wr_op;
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int i;
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if (f->desc->in == f->desc->out ||
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AFMT_CHANNEL(f->desc->in) != AFMT_CHANNEL(f->desc->out))
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return (EINVAL);
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rd_op = NULL;
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wr_op = NULL;
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for (i = 0; i < FEEDFORMAT_TAB_SIZE &&
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(rd_op == NULL || wr_op == NULL); i++) {
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if (rd_op == NULL &&
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AFMT_ENCODING(f->desc->in) == feed_format_ops[i].format)
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rd_op = feed_format_ops[i].read;
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if (wr_op == NULL &&
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AFMT_ENCODING(f->desc->out) == feed_format_ops[i].format)
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wr_op = feed_format_ops[i].write;
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}
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if (rd_op == NULL || wr_op == NULL) {
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printf("%s(): failed to initialize io ops "
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"in=0x%08x out=0x%08x\n",
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__func__, f->desc->in, f->desc->out);
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return (EINVAL);
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}
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info = malloc(sizeof(*info), M_DEVBUF, M_NOWAIT | M_ZERO);
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if (info == NULL)
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return (ENOMEM);
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info->channels = AFMT_CHANNEL(f->desc->in);
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info->ibps = AFMT_BPS(f->desc->in);
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info->ialign = info->ibps * info->channels;
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info->read = rd_op;
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info->obps = AFMT_BPS(f->desc->out);
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info->oalign = info->obps * info->channels;
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info->write = wr_op;
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f->data = info;
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return (0);
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}
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static int
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feed_format_free(struct pcm_feeder *f)
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{
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struct feed_format_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_format_set(struct pcm_feeder *f, int what, int value)
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{
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struct feed_format_info *info;
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info = f->data;
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switch (what) {
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case FEEDFORMAT_CHANNELS:
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if (value < SND_CHN_MIN || value > SND_CHN_MAX)
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return (EINVAL);
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info->channels = (uint32_t)value;
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info->ialign = info->ibps * info->channels;
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info->oalign = info->obps * info->channels;
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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 (0);
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}
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static int
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feed_format_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_format_info *info;
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intpcm_t v;
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uint32_t j;
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uint8_t *src, *dst;
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info = f->data;
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dst = b;
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count = SND_FXROUND(count, info->oalign);
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do {
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if (count < info->oalign)
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break;
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if (count < info->ialign) {
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src = info->reservoir;
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j = info->ialign;
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} else {
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if (info->ialign == info->oalign)
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j = count;
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else if (info->ialign > info->oalign)
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j = SND_FXROUND(count, info->ialign);
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else
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j = SND_FXDIV(count, info->oalign) *
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info->ialign;
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src = dst + count - j;
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}
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j = SND_FXDIV(FEEDER_FEED(f->source, c, src, j, source),
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info->ialign);
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if (j == 0)
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break;
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j *= info->channels;
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count -= j * info->obps;
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do {
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v = info->read(src);
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info->write(dst, v);
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dst += info->obps;
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src += info->ibps;
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} while (--j != 0);
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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_format_desc[] = {
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{ FEEDER_FORMAT, 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_format_methods[] = {
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KOBJMETHOD(feeder_init, feed_format_init),
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KOBJMETHOD(feeder_free, feed_format_free),
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KOBJMETHOD(feeder_set, feed_format_set),
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KOBJMETHOD(feeder_feed, feed_format_feed),
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KOBJMETHOD_END
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};
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FEEDER_DECLARE(feeder_format, NULL);
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/* Extern */
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intpcm_read_t *
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feeder_format_read_op(uint32_t format)
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{
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int i;
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for (i = 0; i < FEEDFORMAT_TAB_SIZE; i++) {
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if (AFMT_ENCODING(format) == feed_format_ops[i].format)
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return (feed_format_ops[i].read);
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}
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return (NULL);
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}
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intpcm_write_t *
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feeder_format_write_op(uint32_t format)
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{
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int i;
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for (i = 0; i < FEEDFORMAT_TAB_SIZE; i++) {
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if (AFMT_ENCODING(format) == feed_format_ops[i].format)
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return (feed_format_ops[i].write);
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}
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return (NULL);
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}
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