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alsa-lib/src/pcm/pcm_surr.c
Jaroslav Kysela b238a26ea4 ENS1370 fixes, YMFPCI code
2001-04-24 08:58:21 +00:00

885 lines
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/*
* PCM - Surround plugin
* Copyright (c) 2001 by Jaroslav Kysela <perex@suse.cz>
*
* This plugin offers 4.0 and 5.1 surround devices with these routing:
*
* 1st channel - front left speaker
* 2nd channel - front rear speaker
* 3rd channel - rear left speaker
* 4th channel - rear right speaker
* 5th channel - center speaker
* 6th channel - LFE channel (woofer)
*
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <byteswap.h>
#include <limits.h>
#include <sys/shm.h>
#include "../control/control_local.h"
#include "pcm_local.h"
#include "pcm_plugin.h"
#define SURR_FLG_CAPTURE (1<<0)
#define SURR_FLG_NO_4CH (1<<1)
#define SURR_FLG_NO_6CH (1<<2)
#define SURR_FLG_NO_CTL_CLOSE (1<<3)
#define SURR_FLG_FD1 (1<<4)
typedef struct _snd_pcm_surround snd_pcm_surround_t;
typedef struct {
snd_card_type_t type;
unsigned int flags;
int (*scount)(snd_ctl_t *ctl, snd_ctl_card_info_t *info, snd_pcm_surround_type_t type);
int (*sopen)(snd_pcm_surround_t *surr,
snd_ctl_card_info_t *info,
snd_pcm_surround_type_t type,
snd_pcm_stream_t stream,
int mode);
void (*sclose)(snd_pcm_surround_t *surr);
} surround_open_t;
struct _snd_pcm_surround {
int card; /* card number */
int device; /* device number */
unsigned int channels; /* count of channels (4 or 6) */
int pcms; /* count of PCM channels */
snd_pcm_t *pcm[3]; /* up to three PCM stereo streams */
int linked[3]; /* streams are linked */
snd_ctl_t *ctl; /* CTL handle */
surround_open_t *po;
union {
struct {
snd_ctl_elem_value_t *sw4ch;
snd_ctl_elem_value_t *sw_pcm;
} ens1370;
} s;
};
static int snd_pcm_surround_free(snd_pcm_surround_t *surr);
static int snd_pcm_surround_close(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_surround_free(surr);
}
static int snd_pcm_surround_nonblock(snd_pcm_t *pcm, int nonblock)
{
int i, err = 0, err1;
snd_pcm_surround_t *surr = pcm->private_data;
for (i = 0; i < surr->pcms; i++) {
err1 = snd_pcm_nonblock(surr->pcm[i], nonblock);
if (err1 && !err)
err = err1;
}
return err;
}
static int snd_pcm_surround_async(snd_pcm_t *pcm, int sig, pid_t pid)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_async(surr->pcm[0], sig, pid);
}
static int snd_pcm_surround_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
{
snd_pcm_surround_t *surr = pcm->private_data;
memset(info, 0, sizeof(*info));
info->stream = snd_enum_to_int(pcm->stream);
info->card = surr->card;
strncpy(info->id, "Surround", sizeof(info->id));
strncpy(info->name, "Surround", sizeof(info->name));
strncpy(info->subname, "Surround", sizeof(info->subname));
info->subdevices_count = 1;
return 0;
}
static int snd_pcm_surround_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * info)
{
snd_pcm_surround_t *surr = pcm->private_data;
int err;
if (surr->pcms == 1 || info->channel == 0 || info->channel == 1)
return snd_pcm_channel_info(surr->pcm[0], info);
if (surr->pcms > 1 && (info->channel == 2 || info->channel == 3)) {
info->channel -= 2;
err = snd_pcm_channel_info(surr->pcm[1], info);
info->channel += 2;
return err;
}
if (surr->pcms > 2 && (info->channel == 4 || info->channel == 5)) {
info->channel -= 4;
err = snd_pcm_channel_info(surr->pcm[2], info);
info->channel += 4;
return err;
}
return -EINVAL;
}
static int snd_pcm_surround_status(snd_pcm_t *pcm, snd_pcm_status_t * status)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_status(surr->pcm[0], status);
}
static snd_pcm_state_t snd_pcm_surround_state(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_state(surr->pcm[0]);
}
static int snd_pcm_surround_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_delay(surr->pcm[0], delayp);
}
static int snd_pcm_surround_prepare(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_prepare(surr->pcm[0]);
}
static int snd_pcm_surround_reset(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_reset(surr->pcm[0]);
}
static int snd_pcm_surround_start(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_start(surr->pcm[0]);
}
static int snd_pcm_surround_drop(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_drop(surr->pcm[0]);
}
static int snd_pcm_surround_drain(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_drain(surr->pcm[0]);
}
static int snd_pcm_surround_pause(snd_pcm_t *pcm, int enable)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_pause(surr->pcm[0], enable);
}
static snd_pcm_sframes_t snd_pcm_surround_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_rewind(surr->pcm[0], frames);
}
static snd_pcm_sframes_t snd_pcm_surround_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
{
snd_pcm_surround_t *surr = pcm->private_data;
if (surr->pcms == 1)
return snd_pcm_writei(surr->pcm[0], buffer, size);
if (pcm->running_areas == NULL) {
int err;
if ((err = snd_pcm_mmap(pcm)) < 0)
return err;
}
return snd_pcm_mmap_writei(pcm, buffer, size);
}
static snd_pcm_sframes_t snd_pcm_surround_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
{
int i;
snd_pcm_sframes_t res = -1, res1;
snd_pcm_surround_t *surr = pcm->private_data;
for (i = 0; i < surr->pcms; i++, bufs += 2) {
res1 = snd_pcm_writen(pcm, bufs, size);
if (res1 < 0)
return res1;
if (res < 0)
res = res1;
else if (res != res1)
return -EPIPE;
}
return res;
}
static snd_pcm_sframes_t snd_pcm_surround_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
{
snd_pcm_surround_t *surr = pcm->private_data;
if (surr->pcms == 1)
return snd_pcm_readi(surr->pcm[0], buffer, size);
if (pcm->running_areas == NULL) {
int err;
if ((err = snd_pcm_mmap(pcm)) < 0)
return err;
}
return snd_pcm_mmap_readi(pcm, buffer, size);
}
static snd_pcm_sframes_t snd_pcm_surround_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
{
int i;
snd_pcm_sframes_t res = -1, res1;
snd_pcm_surround_t *surr = pcm->private_data;
for (i = 0; i < surr->pcms; i++) {
res1 = snd_pcm_writen(pcm, bufs, size);
if (res1 < 0)
return res1;
if (res < 0) {
res = size = res1;
} else if (res != res1)
return -EPIPE;
}
return res;
}
static snd_pcm_sframes_t snd_pcm_surround_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size)
{
int i;
snd_pcm_sframes_t res = -1, res1;
snd_pcm_surround_t *surr = pcm->private_data;
for (i = 0; i < surr->pcms; i++) {
res1 = snd_pcm_mmap_commit(surr->pcm[i], offset, size);
if (res1 < 0)
return res1;
if (res < 0) {
res = size = res1;
} else if (res != res1)
return -EPIPE;
}
return res;
}
static snd_pcm_sframes_t snd_pcm_surround_avail_update(snd_pcm_t *pcm)
{
snd_pcm_surround_t *surr = pcm->private_data;
return snd_pcm_avail_update(surr->pcm[0]);
}
static int snd_pcm_surround_interval_channels(snd_pcm_surround_t *surr,
snd_pcm_hw_params_t *params,
int refine)
{
snd_interval_t *interval;
interval = &params->intervals[SND_PCM_HW_PARAM_CHANNELS-SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
if (interval->empty)
return -EINVAL;
if (interval->openmin) {
if (!refine) {
interval->empty = 1;
return -EINVAL;
}
interval->min = surr->channels;
interval->openmin = 0;
}
if (interval->openmax) {
if (!refine) {
interval->empty = 1;
return -EINVAL;
}
interval->max = surr->channels;
interval->openmax = 0;
}
if (refine && interval->min <= surr->channels && interval->max >= surr->channels)
interval->min = interval->max = surr->channels;
if (interval->min != interval->max || interval->min != surr->channels) {
interval->empty = 1;
return -EINVAL;
}
if (surr->pcms != 1)
interval->min = interval->max = 2;
return 0;
}
static void snd_pcm_surround_interval_channels_fixup(snd_pcm_surround_t *surr,
snd_pcm_hw_params_t *params)
{
snd_interval_t *interval;
interval = &params->intervals[SND_PCM_HW_PARAM_CHANNELS-SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
interval->min = interval->max = surr->channels;
}
static int snd_pcm_surround_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{
snd_pcm_surround_t *surr = pcm->private_data;
snd_pcm_access_mask_t *access_mask;
snd_pcm_access_mask_t *access_mask1;
int i, err;
err = snd_pcm_surround_interval_channels(surr, params, 1);
if (err < 0)
return err;
if (surr->pcms == 1)
return snd_pcm_hw_refine(surr->pcm[0], params);
access_mask = (snd_pcm_access_mask_t *)snd_pcm_hw_param_get_mask(params, SND_PCM_HW_PARAM_ACCESS);
snd_pcm_access_mask_alloca(&access_mask1);
snd_pcm_access_mask_copy(access_mask1, access_mask);
snd_pcm_access_mask_reset(access_mask, SND_PCM_ACCESS_RW_INTERLEAVED);
if (snd_pcm_access_mask_test(access_mask1, SND_PCM_ACCESS_RW_INTERLEAVED))
snd_pcm_access_mask_set(access_mask, SND_PCM_ACCESS_MMAP_INTERLEAVED);
for (i = 0; i < surr->pcms; i++) {
err = snd_pcm_hw_refine(surr->pcm[i], params);
if (err < 0)
goto __error;
}
err = 0;
__error:
snd_pcm_access_mask_copy(access_mask, access_mask1);
snd_pcm_surround_interval_channels_fixup(surr, params);
return err;
}
static int snd_pcm_surround_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
{
snd_pcm_surround_t *surr = pcm->private_data;
snd_pcm_access_mask_t *access_mask;
snd_pcm_access_mask_t *access_mask1;
int i, err;
err = snd_pcm_surround_interval_channels(surr, params, 0);
if (err < 0)
return err;
if (surr->pcms == 1)
return snd_pcm_hw_params(surr->pcm[0], params);
access_mask = (snd_pcm_access_mask_t *)snd_pcm_hw_param_get_mask(params, SND_PCM_HW_PARAM_ACCESS);
snd_pcm_access_mask_alloca(&access_mask1);
snd_pcm_access_mask_copy(access_mask1, access_mask);
snd_pcm_access_mask_reset(access_mask, SND_PCM_ACCESS_RW_INTERLEAVED);
if (snd_pcm_access_mask_test(access_mask1, SND_PCM_ACCESS_RW_INTERLEAVED))
snd_pcm_access_mask_set(access_mask, SND_PCM_ACCESS_MMAP_INTERLEAVED);
for (i = 0; i < surr->pcms; i++) {
err = snd_pcm_hw_params(surr->pcm[i], params);
if (err < 0) {
snd_pcm_access_mask_copy(access_mask, access_mask1);
snd_pcm_surround_interval_channels_fixup(surr, params);
return err;
}
}
snd_pcm_access_mask_copy(access_mask, access_mask1);
snd_pcm_surround_interval_channels_fixup(surr, params);
surr->linked[0] = 0;
for (i = 1; i < surr->pcms; i++) {
err = snd_pcm_link(surr->pcm[0], surr->pcm[i]);
if ((surr->linked[i] = (err >= 0)) == 0)
return err;
}
return 0;
}
static int snd_pcm_surround_hw_free(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
int i, err, res = 0;
snd_pcm_surround_t *surr = pcm->private_data;
for (i = 0; i < surr->pcms; i++) {
err = snd_pcm_hw_free(surr->pcm[i]);
if (err < 0)
res = err;
if (!surr->linked[i])
continue;
surr->linked[i] = 0;
err = snd_pcm_unlink(surr->pcm[i]);
if (err < 0)
res = err;
}
return res;
}
static int snd_pcm_surround_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t * params)
{
int i, err;
snd_pcm_surround_t *surr = pcm->private_data;
for (i = 0; i < surr->pcms; i++) {
err = snd_pcm_sw_params(surr->pcm[i], params);
if (err < 0)
return err;
}
return 0;
}
static int snd_pcm_surround_mmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
// snd_pcm_surround_t *surr = pcm->private_data;
return 0;
}
static int snd_pcm_surround_munmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
// snd_pcm_surround_t *surr = pcm->private_data;
return 0;
}
static void snd_pcm_surround_dump(snd_pcm_t *pcm, snd_output_t *out)
{
snd_output_printf(out, "Surround PCM\n");
if (pcm->setup) {
snd_output_printf(out, "Its setup is:\n");
snd_pcm_dump_setup(pcm, out);
}
}
snd_pcm_ops_t snd_pcm_surround_ops = {
close: snd_pcm_surround_close,
info: snd_pcm_surround_info,
hw_refine: snd_pcm_surround_hw_refine,
hw_params: snd_pcm_surround_hw_params,
hw_free: snd_pcm_surround_hw_free,
sw_params: snd_pcm_surround_sw_params,
channel_info: snd_pcm_surround_channel_info,
dump: snd_pcm_surround_dump,
nonblock: snd_pcm_surround_nonblock,
async: snd_pcm_surround_async,
mmap: snd_pcm_surround_mmap,
munmap: snd_pcm_surround_munmap,
};
snd_pcm_fast_ops_t snd_pcm_surround_fast_ops = {
status: snd_pcm_surround_status,
state: snd_pcm_surround_state,
delay: snd_pcm_surround_delay,
prepare: snd_pcm_surround_prepare,
reset: snd_pcm_surround_reset,
start: snd_pcm_surround_start,
drop: snd_pcm_surround_drop,
drain: snd_pcm_surround_drain,
pause: snd_pcm_surround_pause,
rewind: snd_pcm_surround_rewind,
writei: snd_pcm_surround_writei,
writen: snd_pcm_surround_writen,
readi: snd_pcm_surround_readi,
readn: snd_pcm_surround_readn,
avail_update: snd_pcm_surround_avail_update,
mmap_commit: snd_pcm_surround_mmap_commit,
};
static int snd_pcm_surround_free(snd_pcm_surround_t *surr)
{
int i;
assert(surr);
for (i = 2; i >= 0; i--) {
if (surr->pcm[i] == NULL)
continue;
snd_pcm_close(surr->pcm[i]);
surr->pcm[i] = NULL;
}
if (surr->po->sclose)
surr->po->sclose(surr);
if (surr->ctl)
snd_ctl_close(surr->ctl);
free(surr);
return 0;
}
static int snd_pcm_surround_one_stream(snd_pcm_surround_t *surr,
snd_pcm_surround_type_t type ATTRIBUTE_UNUSED,
int card,
int dev, int subdev,
snd_pcm_stream_t stream, int mode)
{
int err;
if ((err = snd_pcm_hw_open(&surr->pcm[0], "Surround", card, dev,
subdev, stream, mode)) < 0)
return err;
surr->pcms++;
return 0;
}
static int snd_pcm_surround_three_streams(snd_pcm_surround_t *surr,
snd_pcm_surround_type_t type,
int card,
int dev0, int subdev0,
int dev1, int subdev1,
int dev2, int subdev2,
snd_pcm_stream_t stream, int mode)
{
int err;
if ((err = snd_pcm_hw_open(&surr->pcm[0], "Surround L/R", card, dev0,
subdev0, stream, mode)) < 0)
return err;
surr->pcms++;
if ((err = snd_pcm_hw_open(&surr->pcm[1], "Surround Rear L/R", card, dev1,
subdev1, stream, mode)) < 0)
return err;
surr->pcms++;
if (type == SND_PCM_SURROUND_51) {
if ((err = snd_pcm_hw_open(&surr->pcm[2], "Surround Center/LFE", card, dev2,
subdev2, stream, mode)) < 0)
return err;
surr->pcms++;
}
return 0;
}
static int count_generic(snd_ctl_t *ctl ATTRIBUTE_UNUSED,
snd_ctl_card_info_t *info ATTRIBUTE_UNUSED,
snd_pcm_surround_type_t type ATTRIBUTE_UNUSED)
{
return 1;
}
static int count_si7018(snd_ctl_t *ctl ATTRIBUTE_UNUSED,
snd_ctl_card_info_t *info ATTRIBUTE_UNUSED,
snd_pcm_surround_type_t type ATTRIBUTE_UNUSED)
{
/* this card supports multiopen also for DVD !!! */
return 32 / 2 / 3; /* 32 stereo channels / 2 (one helper voice) / 3 (count of streams) */
}
static int open_si7018(snd_pcm_surround_t *surr,
snd_ctl_card_info_t *info,
snd_pcm_surround_type_t type,
snd_pcm_stream_t stream, int mode)
{
int err;
if ((err = snd_pcm_surround_three_streams(surr, type,
snd_ctl_card_info_get_card(info),
0, -1, 0, -1, 0, -1,
stream, mode)) < 0)
return err;
return 0;
}
static int open_fm801(snd_pcm_surround_t *surr,
snd_ctl_card_info_t *info,
snd_pcm_surround_type_t type,
snd_pcm_stream_t stream, int mode)
{
int err;
if ((err = snd_pcm_surround_one_stream(surr, type,
snd_ctl_card_info_get_card(info),
0, 0, stream, mode)) < 0)
return err;
return 0;
}
static int open_ens1370(snd_pcm_surround_t *surr,
snd_ctl_card_info_t *info,
snd_pcm_surround_type_t type,
snd_pcm_stream_t stream, int mode)
{
int err;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *val, *value;
if ((err = snd_pcm_surround_three_streams(surr, type,
snd_ctl_card_info_get_card(info),
1, 0, 0, 0, -1, -1,
stream, mode)) < 0)
return err;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_value_alloca(&val);
/* OK, reroute PCM0 (rear) to Line-In Jack */
snd_ctl_elem_id_set_interface(id, SNDRV_CTL_ELEM_IFACE_CARD);
snd_ctl_elem_id_set_name(id, "PCM 0 Output also on Line-In Jack");
snd_ctl_elem_id_set_index(id, 0);
if ((err = snd_ctl_elem_lock(surr->ctl, id)) < 0)
return err;
snd_ctl_elem_value_malloc(&value);
snd_ctl_elem_value_set_id(value, id);
if ((err = snd_ctl_elem_read(surr->ctl, value)) < 0) {
free(value);
return err;
}
surr->s.ens1370.sw4ch = value;
snd_ctl_elem_value_copy(val, value);
snd_ctl_elem_value_set_boolean(val, 0, 1);
if ((err = snd_ctl_elem_write(surr->ctl, val)) < 0)
return err;
/* Turn off the PCM volume, the second PCM (front speakers) uses the second PCM control */
snd_ctl_elem_id_set_interface(id, SNDRV_CTL_ELEM_IFACE_MIXER);
snd_ctl_elem_id_set_name(id, "PCM Switch");
snd_ctl_elem_id_set_index(id, 0);
if ((err = snd_ctl_elem_lock(surr->ctl, id)) < 0)
return err;
snd_ctl_elem_value_malloc(&value);
snd_ctl_elem_value_set_id(value, id);
if ((err = snd_ctl_elem_read(surr->ctl, value)) < 0) {
free(value);
return err;
}
surr->s.ens1370.sw_pcm = value;
snd_ctl_elem_value_copy(val, value);
snd_ctl_elem_value_set_boolean(val, 0, 0);
snd_ctl_elem_value_set_boolean(val, 1, 0);
if ((err = snd_ctl_elem_write(surr->ctl, val)) < 0)
return err;
return 0;
}
static void close_ens1370(snd_pcm_surround_t *surr)
{
if (surr->s.ens1370.sw4ch) {
snd_ctl_elem_write(surr->ctl, surr->s.ens1370.sw4ch);
free(surr->s.ens1370.sw4ch);
}
if (surr->s.ens1370.sw_pcm) {
snd_ctl_elem_write(surr->ctl, surr->s.ens1370.sw_pcm);
free(surr->s.ens1370.sw_pcm);
}
}
static int count_ymfpci(snd_ctl_t *ctl ATTRIBUTE_UNUSED,
snd_ctl_card_info_t *info ATTRIBUTE_UNUSED,
snd_pcm_surround_type_t type ATTRIBUTE_UNUSED)
{
/* this card supports multiopen also for 4CH !!! */
return 32 / 2 / 2; /* 32 voices / 2 (stereo) / 2 (count of streams) */
}
static int open_ymfpci(snd_pcm_surround_t *surr,
snd_ctl_card_info_t *info,
snd_pcm_surround_type_t type,
snd_pcm_stream_t stream, int mode)
{
int err;
if ((err = snd_pcm_surround_three_streams(surr, type,
snd_ctl_card_info_get_card(info),
0, 0, 2, 0, -1, -1,
stream, mode)) < 0)
return err;
return 0;
}
#define SND_CARD_TYPE_NONE SNDRV_CARD_TYPE_SB_10 /* this card definitely doesn't support surround */
static surround_open_t open_table[] = {
{ type: SND_CARD_TYPE_SI_7018, flags: 0, scount: count_si7018, sopen: open_si7018, sclose: NULL },
{ type: SND_CARD_TYPE_FM801, flags: 0, scount: count_generic, sopen: open_fm801, sclose: NULL },
{ type: SND_CARD_TYPE_ENS1370, flags: SURR_FLG_NO_6CH|SURR_FLG_NO_CTL_CLOSE|SURR_FLG_FD1, scount: count_generic, sopen: open_ens1370, sclose: close_ens1370 },
{ type: SND_CARD_TYPE_YMFPCI, flags: SURR_FLG_NO_6CH, scount: count_ymfpci, sopen: open_ymfpci, sclose: NULL },
{ type: SND_CARD_TYPE_NONE, flags: 0, scount: NULL, sopen: NULL, sclose: NULL }
};
int snd_pcm_surround_open(snd_pcm_t **pcmp, const char *name, int card, int dev,
snd_pcm_surround_type_t type,
snd_pcm_stream_t stream, int mode)
{
snd_pcm_t *pcm = NULL;
snd_pcm_surround_t *surr;
snd_ctl_t *ctl = NULL;
snd_ctl_card_info_t *info;
snd_card_type_t ctype;
surround_open_t *po;
int err;
assert(pcmp);
if (dev != 0)
return -EINVAL; /* not supported at the time */
surr = calloc(1, sizeof(snd_pcm_surround_t));
if (!surr)
return -ENOMEM;
switch (type) {
case SND_PCM_SURROUND_40:
surr->channels = 4;
break;
case SND_PCM_SURROUND_51:
surr->channels = 6;
break;
default:
snd_pcm_surround_free(surr);
return -EINVAL;
}
if ((err = snd_ctl_hw_open(&ctl, "Surround", card, 0)) < 0) {
snd_pcm_surround_free(surr);
return err;
}
surr->ctl = ctl;
snd_ctl_card_info_alloca(&info);
if ((err = snd_ctl_card_info(ctl, info)) < 0)
goto __error;
ctype = snd_ctl_card_info_get_type(info);
for (po = open_table; po->type != SND_CARD_TYPE_NONE; po++) {
if (po->type == ctype) {
surr->po = po;
if (stream == SND_PCM_STREAM_CAPTURE && !(po->flags & SURR_FLG_CAPTURE)) {
err = -ENODEV;
goto __error;
}
switch (type) {
case SND_PCM_SURROUND_40:
if (po->flags & SURR_FLG_NO_4CH) {
err = -ENODEV;
goto __error;
}
break;
case SND_PCM_SURROUND_51:
if (po->flags & SURR_FLG_NO_6CH) {
err = -ENODEV;
goto __error;
}
break;
}
if ((err = po->sopen(surr, info, type, stream, mode)) < 0)
goto __error;
break;
}
}
if (po->type == SND_CARD_TYPE_NONE) {
err = -ENODEV;
goto __error;
}
if (!(po->flags & SURR_FLG_NO_CTL_CLOSE)) {
snd_ctl_close(ctl);
surr->ctl = NULL;
}
ctl = NULL;
pcm = calloc(1, sizeof(snd_pcm_t));
if (!pcm) {
err = -ENOMEM;
goto __error;
}
if (name)
pcm->name = strdup(name);
pcm->type = SND_PCM_TYPE_SURROUND;
pcm->stream = stream;
pcm->mode = mode;
pcm->ops = &snd_pcm_surround_ops;
pcm->op_arg = pcm;
pcm->fast_ops = &snd_pcm_surround_fast_ops;
pcm->fast_op_arg = pcm;
pcm->private_data = surr;
pcm->poll_fd = surr->pcm[po->flags & SURR_FLG_FD1 ? 1 : 0]->poll_fd;
pcm->hw_ptr = surr->pcm[po->flags & SURR_FLG_FD1 ? 1 : 0]->hw_ptr;
pcm->appl_ptr = surr->pcm[po->flags & SURR_FLG_FD1 ? 1 : 0]->appl_ptr;
*pcmp = pcm;
return 0;
__error:
snd_pcm_surround_free(surr);
return err;
}
int _snd_pcm_surround_open(snd_pcm_t **pcmp, const char *name, snd_config_t *conf,
snd_pcm_stream_t stream, int mode)
{
snd_config_iterator_t i, next;
long card = -1, device = 0;
const char *str;
int err;
snd_pcm_surround_type_t type = SND_PCM_SURROUND_40;
snd_config_for_each(i, next, conf) {
snd_config_t *n = snd_config_iterator_entry(i);
const char *id = snd_config_get_id(n);
if (strcmp(id, "comment") == 0)
continue;
if (strcmp(id, "type") == 0)
continue;
if (strcmp(id, "card") == 0) {
err = snd_config_get_integer(n, &card);
if (err < 0) {
err = snd_config_get_string(n, &str);
if (err < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
card = snd_card_get_index(str);
if (card < 0) {
SNDERR("Invalid value for %s", id);
return card;
}
}
continue;
}
if (strcmp(id, "device") == 0) {
err = snd_config_get_integer(n, &device);
if (err < 0) {
SNDERR("Invalid type for %s", id);
return err;
}
continue;
}
#if 0
if (strcmp(id, "subdevice") == 0) {
err = snd_config_get_integer(n, &subdevice);
if (err < 0) {
SNDERR("Invalid type for %s", id);
return err;
}
continue;
}
#endif
if (strcmp(id, "stype") == 0) {
err = snd_config_get_string(n, &str);
if (strcmp(str, "40") == 0 || strcmp(str, "4.0") == 0)
type = SND_PCM_SURROUND_40;
else if (strcmp(str, "51") == 0 || strcmp(str, "5.1") == 0)
type = SND_PCM_SURROUND_51;
continue;
}
SNDERR("Unknown field %s", id);
return -EINVAL;
}
if (card < 0) {
SNDERR("card is not defined");
return -EINVAL;
}
return snd_pcm_surround_open(pcmp, name, card, device, type, stream, mode);
}
int snd_pcm_surround_next_device(snd_ctl_t *ctl, snd_pcm_surround_type_t type, int *device)
{
int err;
snd_ctl_card_info_t *info;
snd_card_type_t ctype;
surround_open_t *po;
assert(device);
snd_ctl_card_info_alloca(&info);
if ((err = snd_ctl_card_info(ctl, info)) < 0)
return err;
ctype = snd_ctl_card_info_get_type(info);
for (po = open_table; po->type != SND_CARD_TYPE_NONE; po++) {
if (po->type == ctype) {
switch (type) {
case SND_PCM_SURROUND_40:
if (po->flags & SURR_FLG_NO_4CH)
return -ENODEV;
break;
case SND_PCM_SURROUND_51:
if (po->flags & SURR_FLG_NO_6CH)
return -ENODEV;
break;
}
if ((err = po->scount(ctl, info, type)) < 0)
return err;
if (err == 0)
return -ENODEV;
if (*device == 0)
*device = 0;
(*device)++;
if (*device >= err)
*device = -1;
return 0;
}
}
return -ENODEV;
}
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