mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-03 09:01:50 -05:00
move alsa and oss modules into their own subdirectories
This commit is contained in:
Lennart Poettering
parent
bae221cca9
commit
c7fff97782
8 changed files with 8 additions and 8 deletions
417
src/modules/oss/oss-util.c
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417
src/modules/oss/oss-util.c
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@ -0,0 +1,417 @@
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/soundcard.h>
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#include <sys/ioctl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <pulse/xmalloc.h>
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#include <pulsecore/core-error.h>
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#include <pulsecore/core-util.h>
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#include <pulsecore/log.h>
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#include <pulsecore/macro.h>
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#include "oss-util.h"
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int pa_oss_open(const char *device, int *mode, int* pcaps) {
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int fd = -1;
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int caps;
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pa_assert(device);
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pa_assert(mode);
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pa_assert(*mode == O_RDWR || *mode == O_RDONLY || *mode == O_WRONLY);
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if(!pcaps)
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pcaps = ∩︀
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if (*mode == O_RDWR) {
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if ((fd = open(device, O_RDWR|O_NDELAY|O_NOCTTY)) >= 0) {
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ioctl(fd, SNDCTL_DSP_SETDUPLEX, 0);
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if (ioctl(fd, SNDCTL_DSP_GETCAPS, pcaps) < 0) {
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pa_log("SNDCTL_DSP_GETCAPS: %s", pa_cstrerror(errno));
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goto fail;
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}
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if (*pcaps & DSP_CAP_DUPLEX)
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goto success;
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pa_log_warn("'%s' doesn't support full duplex", device);
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pa_close(fd);
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}
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if ((fd = open(device, (*mode = O_WRONLY)|O_NDELAY|O_NOCTTY)) < 0) {
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if ((fd = open(device, (*mode = O_RDONLY)|O_NDELAY|O_NOCTTY)) < 0) {
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pa_log("open('%s'): %s", device, pa_cstrerror(errno));
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goto fail;
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}
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}
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} else {
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if ((fd = open(device, *mode|O_NDELAY|O_NOCTTY)) < 0) {
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pa_log("open('%s'): %s", device, pa_cstrerror(errno));
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goto fail;
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}
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}
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*pcaps = 0;
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if (ioctl(fd, SNDCTL_DSP_GETCAPS, pcaps) < 0) {
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pa_log("SNDCTL_DSP_GETCAPS: %s", pa_cstrerror(errno));
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goto fail;
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}
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success:
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pa_log_debug("capabilities:%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
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*pcaps & DSP_CAP_BATCH ? " BATCH" : "",
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#ifdef DSP_CAP_BIND
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*pcaps & DSP_CAP_BIND ? " BIND" : "",
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#else
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"",
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#endif
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*pcaps & DSP_CAP_COPROC ? " COPROC" : "",
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*pcaps & DSP_CAP_DUPLEX ? " DUPLEX" : "",
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#ifdef DSP_CAP_FREERATE
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*pcaps & DSP_CAP_FREERATE ? " FREERATE" : "",
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#else
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"",
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#endif
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#ifdef DSP_CAP_INPUT
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*pcaps & DSP_CAP_INPUT ? " INPUT" : "",
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#else
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"",
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#endif
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*pcaps & DSP_CAP_MMAP ? " MMAP" : "",
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#ifdef DSP_CAP_MODEM
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*pcaps & DSP_CAP_MODEM ? " MODEM" : "",
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#else
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"",
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#endif
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#ifdef DSP_CAP_MULTI
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*pcaps & DSP_CAP_MULTI ? " MULTI" : "",
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#else
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"",
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#endif
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#ifdef DSP_CAP_OUTPUT
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*pcaps & DSP_CAP_OUTPUT ? " OUTPUT" : "",
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#else
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"",
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#endif
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*pcaps & DSP_CAP_REALTIME ? " REALTIME" : "",
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#ifdef DSP_CAP_SHADOW
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*pcaps & DSP_CAP_SHADOW ? " SHADOW" : "",
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#else
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"",
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#endif
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#ifdef DSP_CAP_VIRTUAL
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*pcaps & DSP_CAP_VIRTUAL ? " VIRTUAL" : "",
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#else
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"",
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#endif
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*pcaps & DSP_CAP_TRIGGER ? " TRIGGER" : "");
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pa_make_fd_cloexec(fd);
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return fd;
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fail:
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if (fd >= 0)
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pa_close(fd);
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return -1;
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}
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int pa_oss_auto_format(int fd, pa_sample_spec *ss) {
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int format, channels, speed, reqformat;
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pa_sample_format_t orig_format;
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static const int format_trans[PA_SAMPLE_MAX] = {
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[PA_SAMPLE_U8] = AFMT_U8,
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[PA_SAMPLE_ALAW] = AFMT_A_LAW,
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[PA_SAMPLE_ULAW] = AFMT_MU_LAW,
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[PA_SAMPLE_S16LE] = AFMT_S16_LE,
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[PA_SAMPLE_S16BE] = AFMT_S16_BE,
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[PA_SAMPLE_FLOAT32LE] = AFMT_QUERY, /* not supported */
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[PA_SAMPLE_FLOAT32BE] = AFMT_QUERY, /* not supported */
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[PA_SAMPLE_S32LE] = AFMT_QUERY, /* not supported */
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[PA_SAMPLE_S32BE] = AFMT_QUERY, /* not supported */
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};
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pa_assert(fd >= 0);
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pa_assert(ss);
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orig_format = ss->format;
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reqformat = format = format_trans[ss->format];
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if (reqformat == AFMT_QUERY || ioctl(fd, SNDCTL_DSP_SETFMT, &format) < 0 || format != reqformat) {
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format = AFMT_S16_NE;
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if (ioctl(fd, SNDCTL_DSP_SETFMT, &format) < 0 || format != AFMT_S16_NE) {
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int f = AFMT_S16_NE == AFMT_S16_LE ? AFMT_S16_BE : AFMT_S16_LE;
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format = f;
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if (ioctl(fd, SNDCTL_DSP_SETFMT, &format) < 0 || format != f) {
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format = AFMT_U8;
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if (ioctl(fd, SNDCTL_DSP_SETFMT, &format) < 0 || format != AFMT_U8) {
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pa_log("SNDCTL_DSP_SETFMT: %s", format != AFMT_U8 ? "No supported sample format" : pa_cstrerror(errno));
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return -1;
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} else
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ss->format = PA_SAMPLE_U8;
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} else
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ss->format = f == AFMT_S16_LE ? PA_SAMPLE_S16LE : PA_SAMPLE_S16BE;
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} else
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ss->format = PA_SAMPLE_S16NE;
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}
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if (orig_format != ss->format)
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pa_log_warn("device doesn't support sample format %s, changed to %s.",
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pa_sample_format_to_string(orig_format),
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pa_sample_format_to_string(ss->format));
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channels = ss->channels;
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if (ioctl(fd, SNDCTL_DSP_CHANNELS, &channels) < 0) {
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pa_log("SNDCTL_DSP_CHANNELS: %s", pa_cstrerror(errno));
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return -1;
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}
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pa_assert(channels > 0);
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if (ss->channels != channels) {
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pa_log_warn("device doesn't support %i channels, using %i channels.", ss->channels, channels);
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ss->channels = (uint8_t) channels;
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}
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speed = (int) ss->rate;
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if (ioctl(fd, SNDCTL_DSP_SPEED, &speed) < 0) {
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pa_log("SNDCTL_DSP_SPEED: %s", pa_cstrerror(errno));
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return -1;
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}
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pa_assert(speed > 0);
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if (ss->rate != (unsigned) speed) {
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pa_log_warn("device doesn't support %i Hz, changed to %i Hz.", ss->rate, speed);
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/* If the sample rate deviates too much, we need to resample */
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if (speed < ss->rate*.95 || speed > ss->rate*1.05)
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ss->rate = (uint32_t) speed;
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}
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return 0;
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}
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static int simple_log2(int v) {
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int k = 0;
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for (;;) {
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v >>= 1;
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if (!v) break;
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k++;
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}
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return k;
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}
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int pa_oss_set_fragments(int fd, int nfrags, int frag_size) {
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int arg;
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arg = ((int) nfrags << 16) | simple_log2(frag_size);
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if (ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &arg) < 0) {
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pa_log("SNDCTL_DSP_SETFRAGMENT: %s", pa_cstrerror(errno));
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return -1;
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}
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return 0;
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}
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int pa_oss_get_volume(int fd, unsigned long mixer, const pa_sample_spec *ss, pa_cvolume *volume) {
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char cv[PA_CVOLUME_SNPRINT_MAX];
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unsigned vol;
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pa_assert(fd >= 0);
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pa_assert(ss);
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pa_assert(volume);
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if (ioctl(fd, mixer, &vol) < 0)
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return -1;
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pa_cvolume_reset(volume, ss->channels);
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volume->values[0] = ((vol & 0xFF) * PA_VOLUME_NORM) / 100;
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if (volume->channels >= 2)
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volume->values[1] = (((vol >> 8) & 0xFF) * PA_VOLUME_NORM) / 100;
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pa_log_debug("Read mixer settings: %s", pa_cvolume_snprint(cv, sizeof(cv), volume));
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return 0;
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}
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int pa_oss_set_volume(int fd, unsigned long mixer, const pa_sample_spec *ss, const pa_cvolume *volume) {
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char cv[PA_CVOLUME_SNPRINT_MAX];
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unsigned vol;
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pa_volume_t l, r;
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l = volume->values[0] > PA_VOLUME_NORM ? PA_VOLUME_NORM : volume->values[0];
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vol = (l*100)/PA_VOLUME_NORM;
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if (ss->channels >= 2) {
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r = volume->values[1] > PA_VOLUME_NORM ? PA_VOLUME_NORM : volume->values[1];
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vol |= ((r*100)/PA_VOLUME_NORM) << 8;
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}
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if (ioctl(fd, mixer, &vol) < 0)
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return -1;
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pa_log_debug("Wrote mixer settings: %s", pa_cvolume_snprint(cv, sizeof(cv), volume));
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return 0;
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}
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static int get_device_number(const char *dev) {
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const char *p, *e;
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char *rp = NULL;
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int r;
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if (!(p = rp = pa_readlink(dev))) {
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if (errno != EINVAL && errno != ENOLINK) {
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r = -1;
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goto finish;
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}
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p = dev;
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}
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if ((e = strrchr(p, '/')))
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p = e+1;
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if (p == 0) {
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r = 0;
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goto finish;
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}
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p = strchr(p, 0) -1;
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if (*p >= '0' && *p <= '9') {
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r = *p - '0';
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goto finish;
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}
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r = -1;
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finish:
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pa_xfree(rp);
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return r;
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}
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int pa_oss_get_hw_description(const char *dev, char *name, size_t l) {
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FILE *f;
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int n, r = -1;
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int b = 0;
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if ((n = get_device_number(dev)) < 0)
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return -1;
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if (!(f = fopen("/dev/sndstat", "r")) &&
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!(f = fopen("/proc/sndstat", "r")) &&
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!(f = fopen("/proc/asound/oss/sndstat", "r"))) {
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if (errno != ENOENT)
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pa_log_warn("failed to open OSS sndstat device: %s", pa_cstrerror(errno));
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return -1;
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}
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while (!feof(f)) {
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char line[64];
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int device;
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if (!fgets(line, sizeof(line), f))
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break;
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line[strcspn(line, "\r\n")] = 0;
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if (!b) {
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b = strcmp(line, "Audio devices:") == 0;
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continue;
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}
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if (line[0] == 0)
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break;
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if (sscanf(line, "%i: ", &device) != 1)
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continue;
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if (device == n) {
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char *k = strchr(line, ':');
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pa_assert(k);
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k++;
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k += strspn(k, " ");
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if (pa_endswith(k, " (DUPLEX)"))
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k[strlen(k)-9] = 0;
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pa_strlcpy(name, k, l);
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r = 0;
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break;
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}
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}
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fclose(f);
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return r;
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}
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static int open_mixer(const char *mixer) {
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int fd;
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if ((fd = open(mixer, O_RDWR|O_NDELAY|O_NOCTTY)) >= 0)
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return fd;
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return -1;
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}
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int pa_oss_open_mixer_for_device(const char *device) {
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int n;
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char *fn;
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int fd;
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if ((n = get_device_number(device)) < 0)
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return -1;
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if (n == 0)
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if ((fd = open_mixer("/dev/mixer")) >= 0)
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return fd;
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fn = pa_sprintf_malloc("/dev/mixer%i", n);
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fd = open_mixer(fn);
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pa_xfree(fn);
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if (fd < 0)
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pa_log_warn("Failed to open mixer '%s': %s", device, pa_cstrerror(errno));
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return fd;
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}
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