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Cleaned the mmap_commit implementations in plugins.

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Added undo callbacks for snd_pcm_plugin based plugins.
  - helpers when mmap_commit proceed only a partial transfer
Fixes to avail_update implementation in pcm_hw.c.
This commit is contained in:
Jaroslav Kysela 2002-02-21 15:01:34 +00:00
parent 9b0eebbcb7
commit e128bf856e
22 changed files with 260 additions and 120 deletions
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26
src/pcm/pcm_plugin.h
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@ -30,11 +30,20 @@ typedef snd_pcm_uframes_t (*snd_pcm_slave_xfer_areas_func_t)
snd_pcm_uframes_t slave_offset,
snd_pcm_uframes_t *slave_sizep);
typedef snd_pcm_sframes_t (*snd_pcm_slave_xfer_areas_undo_func_t)
(snd_pcm_t *pcm,
const snd_pcm_channel_area_t *res_areas, /* result areas */
snd_pcm_uframes_t res_offset, /* offset of result areas */
snd_pcm_uframes_t res_size, /* size of result areas */
snd_pcm_uframes_t slave_undo_size);
typedef struct {
snd_pcm_t *slave;
int close_slave;
snd_pcm_slave_xfer_areas_func_t read;
snd_pcm_slave_xfer_areas_func_t write;
snd_pcm_slave_xfer_areas_undo_func_t undo_read;
snd_pcm_slave_xfer_areas_undo_func_t undo_write;
snd_pcm_sframes_t (*client_frames)(snd_pcm_t *pcm, snd_pcm_sframes_t frames);
snd_pcm_sframes_t (*slave_frames)(snd_pcm_t *pcm, snd_pcm_sframes_t frames);
int (*init)(snd_pcm_t *pcm);
@ -43,6 +52,7 @@ typedef struct {
snd_atomic_write_t watom;
} snd_pcm_plugin_t;
void snd_pcm_plugin_init(snd_pcm_plugin_t *plugin);
int snd_pcm_plugin_close(snd_pcm_t *pcm);
int snd_pcm_plugin_card(snd_pcm_t *pcm);
int snd_pcm_plugin_nonblock(snd_pcm_t *pcm, int nonblock);
@ -65,7 +75,7 @@ snd_pcm_sframes_t snd_pcm_plugin_writei(snd_pcm_t *pcm, const void *buffer, snd_
snd_pcm_sframes_t snd_pcm_plugin_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
snd_pcm_sframes_t snd_pcm_plugin_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
snd_pcm_sframes_t snd_pcm_plugin_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
int snd_pcm_plugin_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size);
snd_pcm_sframes_t snd_pcm_plugin_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size);
snd_pcm_sframes_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);
@ -79,6 +89,20 @@ int snd_pcm_plugin_hw_refine_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
extern snd_pcm_fast_ops_t snd_pcm_plugin_fast_ops;
snd_pcm_sframes_t snd_pcm_plugin_undo_read_generic
(snd_pcm_t *pcm,
const snd_pcm_channel_area_t *res_areas, /* result areas */
snd_pcm_uframes_t res_offset, /* offset of result areas */
snd_pcm_uframes_t res_size, /* size of result areas */
snd_pcm_uframes_t slave_undo_size);
snd_pcm_sframes_t snd_pcm_plugin_undo_write_generic
(snd_pcm_t *pcm,
const snd_pcm_channel_area_t *res_areas, /* result areas */
snd_pcm_uframes_t res_offset, /* offset of result areas */
snd_pcm_uframes_t res_size, /* size of result areas */
snd_pcm_uframes_t slave_undo_size);
int snd_pcm_linear_get_index(snd_pcm_format_t src_format, snd_pcm_format_t dst_format);
int snd_pcm_linear_put_index(snd_pcm_format_t src_format, snd_pcm_format_t dst_format);
int snd_pcm_linear_convert_index(snd_pcm_format_t src_format, snd_pcm_format_t dst_format);