mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-10-29 05:40:25 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

- splitted mmap in logical steps

Browse source 
- optimized mmap transfer
- completed mmap helpers
- renamed pcm_plugin_build.c to pcm_common.c
This commit is contained in:
Abramo Bagnara 2000-05-16 15:20:34 +00:00
parent 5b42e338bb
commit 7b054f4dce
17 changed files with 658 additions and 781 deletions
Download patch file Download diff file Expand all files Collapse all files

32
include/pcm.h
View file

@ -97,7 +97,6 @@ int snd_pcm_channel_info(snd_pcm_t *handle, snd_pcm_channel_info_t *info);
int snd_pcm_channel_params(snd_pcm_t *handle, snd_pcm_channel_params_t *params);
int snd_pcm_channel_setup(snd_pcm_t *handle, snd_pcm_channel_setup_t *setup);
int snd_pcm_voice_setup(snd_pcm_t *handle, int channel, snd_pcm_voice_setup_t *setup);
int snd_pcm_all_voices_setup(snd_pcm_t *handle, int channel, snd_pcm_voice_setup_t *setup);
int snd_pcm_channel_status(snd_pcm_t *handle, snd_pcm_channel_status_t *status);
int snd_pcm_channel_update(snd_pcm_t *handle, int channel);
int snd_pcm_playback_prepare(snd_pcm_t *handle);
@ -126,17 +125,36 @@ int snd_pcm_mmap_data(snd_pcm_t *handle, int channel, void **buffer);
int snd_pcm_munmap_control(snd_pcm_t *handle, int channel);
int snd_pcm_munmap_data(snd_pcm_t *handle, int channel);
int snd_pcm_voices_mask(snd_pcm_t *pcm, int channel, bitset_t *client_vmask);
int snd_pcm_mmap_frags_used(snd_pcm_t *pcm, int channel, ssize_t *frags);
int snd_pcm_mmap_frags_free(snd_pcm_t *pcm, int channel, ssize_t *frags);
int snd_pcm_mmap_bytes_used(snd_pcm_t *pcm, int channel, ssize_t *bytes);
int snd_pcm_mmap_bytes_free(snd_pcm_t *pcm, int channel, ssize_t *bytes);
int snd_pcm_mmap_ready(snd_pcm_t *pcm, int channel);
ssize_t snd_pcm_mmap_write(snd_pcm_t *handle, const void *buffer, size_t size);
ssize_t snd_pcm_mmap_read(snd_pcm_t *handle, void *buffer, size_t size);
ssize_t snd_pcm_mmap_writev(snd_pcm_t *pcm, const struct iovec *vector, unsigned long count);
ssize_t snd_pcm_mmap_readv(snd_pcm_t *pcm, const struct iovec *vector, unsigned long count);
int snd_pcm_mmap_samples_used(snd_pcm_t *pcm, int channel, ssize_t *samples);
int snd_pcm_mmap_samples_free(snd_pcm_t *pcm, int channel, ssize_t *samples);
ssize_t snd_pcm_mmap_samples_xfer(snd_pcm_t *pcm, int channel, size_t samples);
ssize_t snd_pcm_mmap_samples_offset(snd_pcm_t *pcm, int channel);
int snd_pcm_mmap_commit_samples(snd_pcm_t *pcm, int channel, int samples);
ssize_t snd_pcm_mmap_write_areas(snd_pcm_t *pcm, snd_pcm_voice_area_t *voices, size_t samples);
ssize_t snd_pcm_mmap_write_samples(snd_pcm_t *pcm, const void *buffer, size_t samples);
ssize_t snd_pcm_mmap_read_areas(snd_pcm_t *pcm, snd_pcm_voice_area_t *voices, size_t samples);
ssize_t snd_pcm_mmap_read_samples(snd_pcm_t *pcm, const void *buffer, size_t samples);
int snd_pcm_mmap_get_areas(snd_pcm_t *pcm, int channel, snd_pcm_voice_area_t *areas);
ssize_t snd_pcm_bytes_per_second(snd_pcm_t *pcm, int channel);
int snd_pcm_area_silence(const snd_pcm_voice_area_t *dst_voice, size_t dst_offset,
size_t samples, int format);
int snd_pcm_areas_silence(const snd_pcm_voice_area_t *dst_voices, size_t dst_offset,
size_t vcount, size_t samples, int format);
int snd_pcm_area_copy(const snd_pcm_voice_area_t *src_voice, size_t src_offset,
const snd_pcm_voice_area_t *dst_voice, size_t dst_offset,
size_t samples, int format);
int snd_pcm_areas_copy(const snd_pcm_voice_area_t *src_voices, size_t src_offset,
const snd_pcm_voice_area_t *dst_voices, size_t dst_offset,
size_t vcount, size_t samples, int format);
/* misc */
int snd_pcm_format_signed(int format);
@ -181,9 +199,7 @@ typedef enum {
typedef struct snd_stru_pcm_plugin_voice {
void *aptr; /* pointer to the allocated area */
void *addr; /* address to voice samples */
unsigned int first; /* offset to first sample in bits */
unsigned int step; /* samples distance in bits */
snd_pcm_voice_area_t area;
unsigned int enabled:1; /* voice need to be processed */
unsigned int wanted:1; /* voice is wanted */
} snd_pcm_plugin_voice_t;