diff options
Diffstat (limited to 'share/examples/sound')
| -rw-r--r-- | share/examples/sound/midi.c | 89 | ||||
| -rw-r--r-- | share/examples/sound/oss/README | 66 | ||||
| -rw-r--r-- | share/examples/sound/oss/audio.c | 310 | ||||
| -rw-r--r-- | share/examples/sound/sndstat_nv.c | 206 |
4 files changed, 671 insertions, 0 deletions
diff --git a/share/examples/sound/midi.c b/share/examples/sound/midi.c new file mode 100644 index 000000000000..5b001ba537e5 --- /dev/null +++ b/share/examples/sound/midi.c @@ -0,0 +1,89 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2022 Goran Mekić + * Copyright (c) 2024 The FreeBSD Foundation + * + * Portions of this software were developed by Christos Margiolis + * <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <err.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#define CMD_MASK 0xF0 +#define CHANNEL_MASK 0x0F +#define NOTE_ON 0x90 +#define NOTE_OFF 0x80 +#define CTL_CHANGE 0xB0 + +int +main(int argc, char *argv[]) +{ + int fd; + unsigned char raw, type, channel, b1, b2; + + if ((fd = open("/dev/umidi0.0", O_RDWR)) < 0) + err(1, "Error opening MIDI device"); + + for (;;) { + if (read(fd, &raw, sizeof(raw)) < sizeof(raw)) + err(1, "Error reading command byte"); + if (!(raw & 0x80)) + continue; + + type = raw & CMD_MASK; + channel = raw & CHANNEL_MASK; + + if (read(fd, &b1, sizeof(b1)) < sizeof(b1)) + err(1, "Error reading byte 1"); + if (read(fd, &b2, sizeof(b2)) < sizeof(b2)) + err(1, "Error reading byte 2"); + + switch (type) { + case NOTE_ON: + printf("Channel %d, note on %d, velocity %d\n", + channel, b1, b2); + break; + case NOTE_OFF: + printf("Channel %d, note off %d, velocity %d\n", + channel, b1, b2); + break; + case CTL_CHANGE: + printf("Channel %d, controller change %d, value %d\n", + channel, b1, b2); + break; + default: + printf("Unknown event type %d\n", type); + break; + } + } + + close(fd); + + return (0); +} diff --git a/share/examples/sound/oss/README b/share/examples/sound/oss/README new file mode 100644 index 000000000000..0188a26348c8 --- /dev/null +++ b/share/examples/sound/oss/README @@ -0,0 +1,66 @@ +Briefly summarised, a general audio application will: +- open(2) +- ioctl(2) +- read(2) +- write(2) +- close(2) + +In this example, read/write will be called in a loop for a duration of +record/playback. Usually, /dev/dsp is the device you want to open, but it can +be any OSS compatible device, even user space one created with virtual_oss. For +configuring sample rate, bit depth and all other configuring of the device +ioctl is used. As devices can support multiple sample rates and formats, what +specific application should do in case there's an error issuing ioctl, as not +all errors are fatal, is upon the developer to decide. As a general guideline +Official OSS development howto should be used. FreeBSD OSS and virtual_oss are +different to a small degree. + +For more advanced OSS and real-time applications, developers need to handle +buffers more carefully. The size of the buffer in OSS is selected using fragment +size size_selector and the buffer size is 2^size_selector for values between 4 +and 16. The formula on the official site is: + +int frag = (max_fragments << 16) | (size_selector); +ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag); + +The max_fragments determines in how many fragments the buffer will be, hence if +the size_selector is 4, the requested size is 2^4 = 16 and for the +max_fragments of 2, the total buffer size will be + +(2 ^ size_selector) * max_fragments + +or in this case 32 bytes. Please note that size of buffer is in bytes not +samples. For example, 24bit sample will be represented with 3 bytes. If you're +porting audio app from Linux, you should be aware that 24 bit samples are +represented with 4 bytes (usually int). + +FreeBSD kernel will round up max_fragments and size of fragment/buffer, so the +last thing any OSS code should do is get info about buffer with audio_buf_info +and SNDCTL_DSP_GETOSPACE. That also means that not all values of max_fragments +are permitted. + +From kernel perspective, there are few points OSS developers should be aware of: +- There is a software facing buffer (bs) and a hardware driver buffer (b) +- The sizes can be seen with cat /dev/sndstat as [b:_/_/_] [bs:_/_/_] (needed: + sysctl hw.snd.verbose=2) +- OSS ioctl only concern software buffer fragments, not hardware + +For USB the block size is according to hw.usb.uaudio.buffer_ms sysctl, meaning +2ms at 48kHz gives 0.002 * 48000 = 96 samples per block, all multiples of this +work well. Block size for virtual_oss, if used, should be set accordingly. + +OSS driver insists on reading / writing a certain number of samples at a time, +one fragment full of samples. It is bound to do so in a fixed time frame, to +avoid under- and overruns in communication with the hardware. + +The idea of a total buffer size that holds max_fragments fragments is to give +some slack and allow application to be about max_fragments - 1 fragments late. +Let's call this the jitter tolerance. The jitter tolerance may be much less if +there is a slight mismatch between the period and the samples per fragment. + +Jitter tolerance gets better if we can make either the period or the samples +per fragment considerably smaller than the other. In our case that means we +divide the total buffer size into smaller fragments, keeping overall latency at +the same level. + +Official OSS development howto: http://manuals.opensound.com/developer/DSP.html diff --git a/share/examples/sound/oss/audio.c b/share/examples/sound/oss/audio.c new file mode 100644 index 000000000000..4dd3c8b82575 --- /dev/null +++ b/share/examples/sound/oss/audio.c @@ -0,0 +1,310 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2021 Goran Mekić + * Copyright (c) 2024 The FreeBSD Foundation + * + * Portions of this software were developed by Christos Margiolis + * <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/soundcard.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#ifndef SAMPLE_SIZE +#define SAMPLE_SIZE 16 +#endif + +/* Format can be unsigned, in which case replace S with U */ +#if SAMPLE_SIZE == 32 +typedef int32_t sample_t; +int format = AFMT_S32_NE; /* Signed 32bit native endian format */ +#elif SAMPLE_SIZE == 16 +typedef int16_t sample_t; +int format = AFMT_S16_NE; /* Signed 16bit native endian format */ +#elif SAMPLE_SIZE == 8 +typedef int8_t sample_t; +int format = AFMT_S8_NE; /* Signed 8bit native endian format */ +#else +#error Unsupported sample format! +typedef int32_t sample_t; +int format = AFMT_S32_NE; /* Not a real value, just silencing + * compiler errors */ +#endif + +/* + * Minimal configuration for OSS + * For real world applications, this structure will probably contain many + * more fields + */ +typedef struct config { + char *device; + int channels; + int fd; + int format; + int frag; + int sample_count; + int sample_rate; + int sample_size; + int chsamples; + int mmap; + oss_audioinfo audio_info; + audio_buf_info buffer_info; +} config_t; + +/* + * Error state is indicated by value=-1 in which case application exits with + * error + */ +static inline void +check_error(const int value, const char *message) +{ + if (value == -1) + err(1, "OSS error: %s\n", message); +} + + +/* Calculate frag by giving it minimal size of buffer */ +static inline int +size2frag(int x) +{ + int frag = 0; + + while ((1 << frag) < x) + ++frag; + + return (frag); +} + +/* + * Split input buffer into channels. Input buffer is in interleaved format + * which means if we have 2 channels (L and R), this is what the buffer of 8 + * samples would contain: L,R,L,R,L,R,L,R. The result are two channels + * containing: L,L,L,L and R,R,R,R. + */ +static void +oss_split(config_t *config, sample_t *input, sample_t *output) +{ + int channel, index, i; + + for (i = 0; i < config->sample_count; ++i) { + channel = i % config->channels; + index = i / config->channels; + output[channel * index] = input[i]; + } +} + +/* + * Convert channels into interleaved format and place it in output + * buffer + */ +static void +oss_merge(config_t *config, sample_t *input, sample_t *output) +{ + int channel, index; + + for (channel = 0; channel < config->channels; ++channel) { + for (index = 0; index < config->chsamples; ++index) { + output[index * config->channels + channel] = + input[channel * index]; + } + } +} + +static void +oss_init(config_t *config) +{ + int error, tmp, min_frag; + + /* Open the device for read and write */ + config->fd = open(config->device, O_RDWR); + check_error(config->fd, "open"); + + /* Get device information */ + config->audio_info.dev = -1; + error = ioctl(config->fd, SNDCTL_ENGINEINFO, &(config->audio_info)); + check_error(error, "SNDCTL_ENGINEINFO"); + printf("min_channels: %d\n", config->audio_info.min_channels); + printf("max_channels: %d\n", config->audio_info.max_channels); + printf("latency: %d\n", config->audio_info.latency); + printf("handle: %s\n", config->audio_info.handle); + if (config->audio_info.min_rate > config->sample_rate || + config->sample_rate > config->audio_info.max_rate) { + errx(1, "%s doesn't support chosen samplerate of %dHz!\n", + config->device, config->sample_rate); + } + if (config->channels < 1) + config->channels = config->audio_info.max_channels; + + /* + * If device is going to be used in mmap mode, disable all format + * conversions. Official OSS documentation states error code should not + * be checked. + * http://manuals.opensound.com/developer/mmap_test.c.html#LOC10 + */ + if (config->mmap) { + tmp = 0; + ioctl(config->fd, SNDCTL_DSP_COOKEDMODE, &tmp); + } + + /* + * Set number of channels. If number of channels is chosen to the value + * near the one wanted, save it in config + */ + tmp = config->channels; + error = ioctl(config->fd, SNDCTL_DSP_CHANNELS, &tmp); + check_error(error, "SNDCTL_DSP_CHANNELS"); + /* Or check if tmp is close enough? */ + if (tmp != config->channels) { + errx(1, "%s doesn't support chosen channel count of %d set " + "to %d!\n", config->device, config->channels, tmp); + } + config->channels = tmp; + + /* Set format, or bit size: 8, 16, 24 or 32 bit sample */ + tmp = config->format; + error = ioctl(config->fd, SNDCTL_DSP_SETFMT, &tmp); + check_error(error, "SNDCTL_DSP_SETFMT"); + if (tmp != config->format) { + errx(1, "%s doesn't support chosen sample format!\n", + config->device); + } + + /* Most common values for samplerate (in kHz): 44.1, 48, 88.2, 96 */ + tmp = config->sample_rate; + error = ioctl(config->fd, SNDCTL_DSP_SPEED, &tmp); + check_error(error, "SNDCTL_DSP_SPEED"); + + /* Get and check device capabilities */ + error = ioctl(config->fd, SNDCTL_DSP_GETCAPS, &(config->audio_info.caps)); + check_error(error, "SNDCTL_DSP_GETCAPS"); + if (!(config->audio_info.caps & PCM_CAP_DUPLEX)) + errx(1, "Device doesn't support full duplex!\n"); + + if (config->mmap) { + if (!(config->audio_info.caps & PCM_CAP_TRIGGER)) + errx(1, "Device doesn't support triggering!\n"); + if (!(config->audio_info.caps & PCM_CAP_MMAP)) + errx(1, "Device doesn't support mmap mode!\n"); + } + + /* + * If desired frag is smaller than minimum, based on number of channels + * and format (size in bits: 8, 16, 24, 32), set that as frag. Buffer + * size is 2^frag, but the real size of the buffer will be read when + * the configuration of the device is successful + */ + min_frag = size2frag(config->sample_size * config->channels); + + if (config->frag < min_frag) + config->frag = min_frag; + + /* + * Allocate buffer in fragments. Total buffer will be split in number + * of fragments (2 by default) + */ + if (config->buffer_info.fragments < 0) + config->buffer_info.fragments = 2; + tmp = ((config->buffer_info.fragments) << 16) | config->frag; + error = ioctl(config->fd, SNDCTL_DSP_SETFRAGMENT, &tmp); + check_error(error, "SNDCTL_DSP_SETFRAGMENT"); + + /* When all is set and ready to go, get the size of buffer */ + error = ioctl(config->fd, SNDCTL_DSP_GETOSPACE, &(config->buffer_info)); + check_error(error, "SNDCTL_DSP_GETOSPACE"); + if (config->buffer_info.bytes < 1) { + errx(1, "OSS buffer error: buffer size can not be %d\n", + config->buffer_info.bytes); + } + config->sample_count = config->buffer_info.bytes / config->sample_size; + config->chsamples = config->sample_count / config->channels; +} + +int +main(int argc, char *argv[]) +{ + int ret, bytes; + int8_t *ibuf, *obuf; + config_t config = { + .device = "/dev/dsp", + .channels = -1, + .format = format, + .frag = -1, + .sample_rate = 48000, + .sample_size = sizeof(sample_t), + .buffer_info.fragments = -1, + .mmap = 0, + }; + + /* Initialize device */ + oss_init(&config); + + /* + * Allocate input and output buffers so that their size match frag_size + */ + bytes = config.buffer_info.bytes; + ibuf = malloc(bytes); + obuf = malloc(bytes); + sample_t *channels = malloc(bytes); + + printf("bytes: %d, fragments: %d, fragsize: %d, fragstotal: %d, " + "samples: %d\n", + bytes, config.buffer_info.fragments, + config.buffer_info.fragsize, config.buffer_info.fragstotal, + config.sample_count); + + /* Minimal engine: read input and copy it to the output */ + for (;;) { + ret = read(config.fd, ibuf, bytes); + if (ret < bytes) { + fprintf(stderr, "Requested %d bytes, but read %d!\n", + bytes, ret); + break; + } + oss_split(&config, (sample_t *)ibuf, channels); + /* All processing will happen here */ + oss_merge(&config, channels, (sample_t *)obuf); + ret = write(config.fd, obuf, bytes); + if (ret < bytes) { + fprintf(stderr, "Requested %d bytes, but wrote %d!\n", + bytes, ret); + break; + } + } + + /* Cleanup */ + free(channels); + free(obuf); + free(ibuf); + close(config.fd); + + return (0); +} diff --git a/share/examples/sound/sndstat_nv.c b/share/examples/sound/sndstat_nv.c new file mode 100644 index 000000000000..1056c1f4a08f --- /dev/null +++ b/share/examples/sound/sndstat_nv.c @@ -0,0 +1,206 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024 The FreeBSD Foundation + * + * This software was developed by Christos Margiolis <christos@FreeBSD.org> + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/sndstat.h> +#include <sys/nv.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <unistd.h> + +/* + * Example program showcasing how to use sndstat(4)'s nvlist interface, and how + * to fetch all currently supported fields, with the appropriate error checks. + * + * For more detailed information on what each nvlist field represents, please + * read sndstat(4)'s man page. + */ + +int +main(int argc, char *argv[]) +{ + nvlist_t *nvl; + const nvlist_t * const *di; + const nvlist_t * const *cdi; + struct sndstioc_nv_arg arg; + size_t nitems, nchans, i, j; + int fd, pchan, rchan; + + if ((fd = open("/dev/sndstat", O_RDONLY)) < 0) + err(1, "open(/dev/sndstat)"); + + if (ioctl(fd, SNDSTIOC_REFRESH_DEVS, NULL) < 0) + err(1, "ioctl(SNDSTIOC_REFRESH_DEVS)"); + + arg.nbytes = 0; + arg.buf = NULL; + if (ioctl(fd, SNDSTIOC_GET_DEVS, &arg) < 0) + err(1, "ioctl(SNDSTIOC_GET_DEVS#1)"); + + if ((arg.buf = malloc(arg.nbytes)) == NULL) + err(1, "malloc"); + + if (ioctl(fd, SNDSTIOC_GET_DEVS, &arg) < 0) + err(1, "ioctl(SNDSTIOC_GET_DEVS#2)"); + + if ((nvl = nvlist_unpack(arg.buf, arg.nbytes, 0)) == NULL) + err(1, "nvlist_unpack"); + + if (nvlist_empty(nvl) || !nvlist_exists(nvl, SNDST_DSPS)) + errx(1, "no soundcards attached"); + + di = nvlist_get_nvlist_array(nvl, SNDST_DSPS, &nitems); + for (i = 0; i < nitems; i++) { +#define NV(type, item) \ + nvlist_get_ ## type (di[i], SNDST_DSPS_ ## item) + printf("nameunit=%s\n", NV(string, NAMEUNIT)); + printf("\tfrom_user=%d\n", NV(bool, FROM_USER)); + printf("\tdevnode=%s\n", NV(string, DEVNODE)); + printf("\tdesc=%s\n", NV(string, DESC)); + printf("\tprovider=%s\n", NV(string, PROVIDER)); + printf("\tpchan=%d\n", (int)NV(number, PCHAN)); + printf("\trchan=%d\n", (int)NV(number, RCHAN)); + pchan = NV(number, PCHAN); + rchan = NV(number, RCHAN); +#undef NV + + if (pchan && !nvlist_exists(di[i], SNDST_DSPS_INFO_PLAY)) + errx(1, "playback channel list empty"); + if (rchan && !nvlist_exists(di[i], SNDST_DSPS_INFO_REC)) + errx(1, "recording channel list empty"); + +#define NV(type, mode, item) \ + nvlist_get_ ## type (nvlist_get_nvlist(di[i], \ + SNDST_DSPS_INFO_ ## mode), SNDST_DSPS_INFO_ ## item) + if (pchan) { + printf("\tplay_min_rate=%d\n", + (int)NV(number, PLAY, MIN_RATE)); + printf("\tplay_max_rate=%d\n", + (int)NV(number, PLAY, MAX_RATE)); + printf("\tplay_formats=%#08x\n", + (int)NV(number, PLAY, FORMATS)); + printf("\tplay_min_chn=%d\n", + (int)NV(number, PLAY, MIN_CHN)); + printf("\tplay_max_chn=%d\n", + (int)NV(number, PLAY, MAX_CHN)); + } + if (rchan) { + printf("\trec_min_rate=%d\n", + (int)NV(number, REC, MIN_RATE)); + printf("\trec_max_rate=%d\n", + (int)NV(number, REC, MAX_RATE)); + printf("\trec_formats=%#08x\n", + (int)NV(number, REC, FORMATS)); + printf("\trec_min_chn=%d\n", + (int)NV(number, REC, MIN_CHN)); + printf("\trec_max_chn=%d\n", + (int)NV(number, REC, MAX_CHN)); + } +#undef NV + + if (!nvlist_exists(di[i], SNDST_DSPS_PROVIDER_INFO)) + continue; + +#define NV(type, item) \ + nvlist_get_ ## type (nvlist_get_nvlist(di[i], \ + SNDST_DSPS_PROVIDER_INFO), SNDST_DSPS_SOUND4_ ## item) + printf("\tunit=%d\n", (int)NV(number, UNIT)); + printf("\tstatus=%s\n", NV(string, STATUS)); + printf("\tbitperfect=%d\n", NV(bool, BITPERFECT)); + printf("\tpvchan=%d\n", (int)NV(number, PVCHAN)); + printf("\tpvchanrate=%d\n", (int)NV(number, PVCHANRATE)); + printf("\tpvchanformat=%#08x\n", (int)NV(number, PVCHANFORMAT)); + printf("\trvchan=%d\n", (int)NV(number, RVCHAN)); + printf("\trvchanrate=%d\n", (int)NV(number, RVCHANRATE)); + printf("\trvchanformat=%#08x\n", (int)NV(number, RVCHANFORMAT)); +#undef NV + + if (!nvlist_exists(nvlist_get_nvlist(di[i], + SNDST_DSPS_PROVIDER_INFO), SNDST_DSPS_SOUND4_CHAN_INFO)) + errx(1, "channel info list empty"); + + cdi = nvlist_get_nvlist_array( + nvlist_get_nvlist(di[i], SNDST_DSPS_PROVIDER_INFO), + SNDST_DSPS_SOUND4_CHAN_INFO, &nchans); + for (j = 0; j < nchans; j++) { +#define NV(type, item) \ + nvlist_get_ ## type (cdi[j], SNDST_DSPS_SOUND4_CHAN_ ## item) + printf("\tchan=%s\n", NV(string, NAME)); + printf("\t\tparentchan=%s\n", NV(string, PARENTCHAN)); + printf("\t\tunit=%d\n", (int)NV(number, UNIT)); + printf("\t\tcaps=%#08x\n", (int)NV(number, CAPS)); + printf("\t\tlatency=%d\n", (int)NV(number, LATENCY)); + printf("\t\trate=%d\n", (int)NV(number, RATE)); + printf("\t\tformat=%#08x\n", (int)NV(number, FORMAT)); + printf("\t\tpid=%d\n", (int)NV(number, PID)); + printf("\t\tcomm=%s\n", NV(string, COMM)); + printf("\t\tintr=%d\n", (int)NV(number, INTR)); + printf("\t\txruns=%d\n", (int)NV(number, XRUNS)); + printf("\t\tfeedcnt=%d\n", (int)NV(number, FEEDCNT)); + printf("\t\tleftvol=%d\n", (int)NV(number, LEFTVOL)); + printf("\t\trightvol=%d\n", (int)NV(number, RIGHTVOL)); + printf("\t\thwbuf_format=%#08x\n", + (int)NV(number, HWBUF_FORMAT)); + printf("\t\thwbuf_size=%d\n", + (int)NV(number, HWBUF_SIZE)); + printf("\t\thwbuf_blksz=%d\n", + (int)NV(number, HWBUF_BLKSZ)); + printf("\t\thwbuf_blkcnt=%d\n", + (int)NV(number, HWBUF_BLKCNT)); + printf("\t\thwbuf_free=%d\n", + (int)NV(number, HWBUF_FREE)); + printf("\t\thwbuf_ready=%d\n", + (int)NV(number, HWBUF_READY)); + printf("\t\tswbuf_format=%#08x\n", + (int)NV(number, SWBUF_FORMAT)); + printf("\t\tswbuf_size=%d\n", + (int)NV(number, SWBUF_SIZE)); + printf("\t\tswbuf_blksz=%d\n", + (int)NV(number, SWBUF_BLKSZ)); + printf("\t\tswbuf_blkcnt=%d\n", + (int)NV(number, SWBUF_BLKCNT)); + printf("\t\tswbuf_free=%d\n", + (int)NV(number, SWBUF_FREE)); + printf("\t\tswbuf_ready=%d\n", + (int)NV(number, SWBUF_READY)); + printf("\t\tswbuf_feederchain=%s\n", + NV(string, FEEDERCHAIN)); +#undef NV + } + } + + free(arg.buf); + nvlist_destroy(nvl); + close(fd); + + return (0); +} |