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Merged pcmplug branch.

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Jaroslav Kysela 2000-09-24 09:57:26 +00:00
parent 40d1ee071d
commit 6962a9d6ce
61 changed files with 7172 additions and 6743 deletions
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105
src/pcm/pcm_plugin.h Normal file
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/*
* PCM - Common plugin code
* Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
*
*
* 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.
*
*/
typedef struct {
snd_pcm_t *slave;
int close_slave;
snd_pcm_xfer_areas_func_t read;
snd_pcm_xfer_areas_func_t write;
size_t (*client_frames)(snd_pcm_t *pcm, size_t frames);
int (*init)(snd_pcm_t *pcm);
snd_pcm_mmap_control_t mmap_control;
snd_pcm_mmap_status_t mmap_status;
} snd_pcm_plugin_t;
int snd_pcm_plugin_close(snd_pcm_t *pcm);
int snd_pcm_plugin_nonblock(snd_pcm_t *pcm, int nonblock);
int snd_pcm_plugin_info(snd_pcm_t *pcm, snd_pcm_info_t * info);
int snd_pcm_plugin_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * info);
int snd_pcm_plugin_channel_params(snd_pcm_t *pcm, snd_pcm_channel_params_t * params);
int snd_pcm_plugin_channel_setup(snd_pcm_t *pcm, snd_pcm_channel_setup_t * setup);
int snd_pcm_plugin_status(snd_pcm_t *pcm, snd_pcm_status_t * status);
int snd_pcm_plugin_state(snd_pcm_t *pcm);
int snd_pcm_plugin_delay(snd_pcm_t *pcm, ssize_t *delayp);
int snd_pcm_plugin_prepare(snd_pcm_t *pcm);
int snd_pcm_plugin_start(snd_pcm_t *pcm);
int snd_pcm_plugin_stop(snd_pcm_t *pcm);
int snd_pcm_plugin_flush(snd_pcm_t *pcm);
int snd_pcm_plugin_pause(snd_pcm_t *pcm, int enable);
ssize_t snd_pcm_plugin_appl_ptr(snd_pcm_t *pcm, off_t offset);
ssize_t snd_pcm_plugin_writei(snd_pcm_t *pcm, const void *buffer, size_t size);
ssize_t snd_pcm_plugin_writen(snd_pcm_t *pcm, void **bufs, size_t size);
ssize_t snd_pcm_plugin_readi(snd_pcm_t *pcm, void *buffer, size_t size);
ssize_t snd_pcm_plugin_readn(snd_pcm_t *pcm, void **bufs, size_t size);
ssize_t snd_pcm_plugin_mmap_forward(snd_pcm_t *pcm, size_t size);
ssize_t snd_pcm_plugin_avail_update(snd_pcm_t *pcm);
int snd_pcm_plugin_mmap_status(snd_pcm_t *pcm);
int snd_pcm_plugin_mmap_control(snd_pcm_t *pcm);
int snd_pcm_plugin_mmap_data(snd_pcm_t *pcm);
int snd_pcm_plugin_munmap_status(snd_pcm_t *pcm);
int snd_pcm_plugin_munmap_control(snd_pcm_t *pcm);
int snd_pcm_plugin_munmap_data(snd_pcm_t *pcm);
int snd_pcm_plugin_poll_descriptor(snd_pcm_t *pcm);
int snd_pcm_plugin_channels_mask(snd_pcm_t *pcm, bitset_t *cmask);
int getput_index(int format);
int conv_index(int src_format, int dst_format);
#define SND_PCM_LINEAR_FORMATS (SND_PCM_FMT_S8 | SND_PCM_FMT_U8 | \
SND_PCM_FMT_S16_LE | SND_PCM_FMT_S16_BE | \
SND_PCM_FMT_U16_LE | SND_PCM_FMT_U16_BE | \
SND_PCM_FMT_S24_LE | SND_PCM_FMT_S24_BE | \
SND_PCM_FMT_U24_LE | SND_PCM_FMT_U24_BE | \
SND_PCM_FMT_S32_LE | SND_PCM_FMT_S32_BE | \
SND_PCM_FMT_U32_LE | SND_PCM_FMT_U32_BE)
extern struct snd_pcm_fast_ops snd_pcm_plugin_fast_ops;
#define muldiv64(a,b,d) (((int64_t)(a) * (b) + (b) / 2) / (d))
#define ROUTE_PLUGIN_FLOAT 1
#define ROUTE_PLUGIN_RESOLUTION 16
#if ROUTE_PLUGIN_FLOAT
typedef float ttable_entry_t;
#define HALF 0.5
#define FULL 1.0
#else
typedef int ttable_entry_t;
#define HALF (ROUTE_PLUGIN_RESOLUTION / 2)
#define FULL ROUTE_PLUGIN_RESOLUTION
#endif
int snd_pcm_linear_open(snd_pcm_t **handlep, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_mulaw_open(snd_pcm_t **handlep, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_alaw_open(snd_pcm_t **handlep, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_adpcm_open(snd_pcm_t **handlep, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_route_load_ttable(snd_config_t *tt, ttable_entry_t *ttable,
unsigned int tt_csize, unsigned int tt_ssize,
unsigned int *tt_cused, unsigned int *tt_sused,
int schannels);
int snd_pcm_route_open(snd_pcm_t **handlep,
int sformat, unsigned int schannels,
ttable_entry_t *ttable,
unsigned int tt_ssize,
unsigned int tt_cused, unsigned int tt_sused,
snd_pcm_t *slave, int close_slave);
int snd_pcm_rate_open(snd_pcm_t **handlep, int sformat, int srate, snd_pcm_t *slave, int close_slave);