/**

 * \file pcm/pcm_generic.c

 * \ingroup PCM

 * \brief PCM Interface

 * \author Jaroslav Kysela <perex@perex.cz>

 * \date 2004

 */

/*

 *  PCM - Common generic plugin code

 *  Copyright (c) 2004 by Jaroslav Kysela <perex@perex.cz> 

 *

 *

 *   This library is free software; you can redistribute it and/or modify

 *   it under the terms of the GNU Lesser General Public License as

 *   published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

 *

 *   You should have received a copy of the GNU Lesser General Public

 *   License along with this library; if not, write to the Free Software

 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *

 */

#include <sys/ioctl.h>

#include <limits.h>

#include "pcm_local.h"

#include "pcm_generic.h"

#ifndef DOC_HIDDEN

int snd_pcm_generic_close(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	int err = 0;

	if (generic->close_slave)

		err = snd_pcm_close(generic->slave);

	free(generic);

	return err;

}

int snd_pcm_generic_nonblock(snd_pcm_t *pcm, int nonblock)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_nonblock(generic->slave, nonblock);

}

int snd_pcm_generic_async(snd_pcm_t *pcm, int sig, pid_t pid)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_async(generic->slave, sig, pid);

}

int snd_pcm_generic_poll_descriptors_count(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_poll_descriptors_count(generic->slave);

}

int snd_pcm_generic_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_poll_descriptors(generic->slave, pfds, space);

}

int snd_pcm_generic_poll_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_poll_descriptors_revents(generic->slave, pfds, nfds, revents);

}

int snd_pcm_generic_info(snd_pcm_t *pcm, snd_pcm_info_t * info)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_info(generic->slave, info);

}

int snd_pcm_generic_hw_free(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_hw_free(generic->slave);

}

int snd_pcm_generic_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_sw_params(generic->slave, params);

}

int snd_pcm_generic_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_hw_refine(generic->slave, params);

}

int snd_pcm_generic_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return _snd_pcm_hw_params_internal(generic->slave, params);

}

int snd_pcm_generic_prepare(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_prepare(generic->slave);

}

int snd_pcm_generic_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *info)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	if (pcm->mmap_shadow) {

		/* No own buffer is required - the plugin won't change

		 * the data on the buffer, or do safely on-the-place

		 * conversion

		 */

		return snd_pcm_channel_info(generic->slave, info);

	} else {

		/* Allocate own buffer */

		return snd_pcm_channel_info_shm(pcm, info, -1);

	}

}

int snd_pcm_generic_status(snd_pcm_t *pcm, snd_pcm_status_t * status)

{ 

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_status(generic->slave, status);

}

snd_pcm_state_t snd_pcm_generic_state(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_state(generic->slave);

}

int snd_pcm_generic_hwsync(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_hwsync(generic->slave);

}

int snd_pcm_generic_reset(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_reset(generic->slave);

}

int snd_pcm_generic_start(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_start(generic->slave);

}

int snd_pcm_generic_drop(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_drop(generic->slave);

}

int snd_pcm_generic_drain(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_drain(generic->slave);

}

int snd_pcm_generic_pause(snd_pcm_t *pcm, int enable)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_pause(generic->slave, enable);

}

int snd_pcm_generic_resume(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_resume(generic->slave);

}

int snd_pcm_generic_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_delay(generic->slave, delayp);

}

snd_pcm_sframes_t snd_pcm_generic_forwardable(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_forwardable(generic->slave);

}

snd_pcm_sframes_t snd_pcm_generic_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return INTERNAL(snd_pcm_forward)(generic->slave, frames);

}

snd_pcm_sframes_t snd_pcm_generic_rewindable(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_rewindable(generic->slave);

}

snd_pcm_sframes_t snd_pcm_generic_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_rewind(generic->slave, frames);

}

int snd_pcm_generic_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2)

{

	snd_pcm_generic_t *generic = pcm1->private_data;

	if (generic->slave->fast_ops->link)

		return generic->slave->fast_ops->link(generic->slave->fast_op_arg, pcm2);

	return -ENOSYS;

}

int snd_pcm_generic_link_slaves(snd_pcm_t *pcm, snd_pcm_t *master)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	if (generic->slave->fast_ops->link_slaves)

		return generic->slave->fast_ops->link_slaves(generic->slave->fast_op_arg, master);

	return -ENOSYS;

}

int snd_pcm_generic_unlink(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	if (generic->slave->fast_ops->unlink)

		return generic->slave->fast_ops->unlink(generic->slave->fast_op_arg);

	return -ENOSYS;

}

snd_pcm_sframes_t snd_pcm_generic_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return _snd_pcm_writei(generic->slave, buffer, size);

}

snd_pcm_sframes_t snd_pcm_generic_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return _snd_pcm_writen(generic->slave, bufs, size);

}

snd_pcm_sframes_t snd_pcm_generic_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return _snd_pcm_readi(generic->slave, buffer, size);

}

snd_pcm_sframes_t snd_pcm_generic_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return _snd_pcm_readn(generic->slave, bufs, size);

}

snd_pcm_sframes_t snd_pcm_generic_mmap_commit(snd_pcm_t *pcm, 

					      snd_pcm_uframes_t offset,

					      snd_pcm_uframes_t size)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_mmap_commit(generic->slave, offset, size);

}

snd_pcm_sframes_t snd_pcm_generic_avail_update(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_avail_update(generic->slave);

}

int snd_pcm_generic_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail,

			       snd_htimestamp_t *tstamp)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_htimestamp(generic->slave, avail, tstamp);

}

/* stand-alone version - similar like snd_pcm_hw_htimestamp but

 * taking the tstamp via gettimestamp().

 */

int snd_pcm_generic_real_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail,

				    snd_htimestamp_t *tstamp)

{

	snd_pcm_sframes_t avail1;

	int ok = 0;

	while (1) {

		avail1 = __snd_pcm_avail_update(pcm);

		if (avail1 < 0)

			return avail1;

		if (ok && (snd_pcm_uframes_t)avail1 == *avail)

			break;

		*avail = avail1;

		gettimestamp(tstamp, pcm->tstamp_type);

		ok = 1;

	}

	return 0;

}

int snd_pcm_generic_mmap(snd_pcm_t *pcm)

{

	if (pcm->mmap_shadow) {

		/* Copy the slave mmapped buffer data */

		snd_pcm_generic_t *generic = pcm->private_data;

		pcm->mmap_channels = generic->slave->mmap_channels;

		pcm->running_areas = generic->slave->running_areas;

		pcm->stopped_areas = generic->slave->stopped_areas;

	}

	return 0;

}

int snd_pcm_generic_munmap(snd_pcm_t *pcm)

{

	if (pcm->mmap_shadow) {

		/* Clean up */

		pcm->mmap_channels = NULL;

		pcm->running_areas = NULL;

		pcm->stopped_areas = NULL;

	}

	return 0;

}

snd_pcm_chmap_query_t **snd_pcm_generic_query_chmaps(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_query_chmaps(generic->slave);

}

snd_pcm_chmap_t *snd_pcm_generic_get_chmap(snd_pcm_t *pcm)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_get_chmap(generic->slave);

}

int snd_pcm_generic_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_set_chmap(generic->slave, map);

}

int snd_pcm_generic_may_wait_for_avail_min(snd_pcm_t *pcm, snd_pcm_uframes_t avail ATTRIBUTE_UNUSED)

{

	snd_pcm_generic_t *generic = pcm->private_data;

	return snd_pcm_may_wait_for_avail_min(generic->slave, snd_pcm_mmap_avail(generic->slave));

}

#endif /* DOC_HIDDEN */