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

Added lfloat plugin code (not finished)

Browse source
This commit is contained in:
Jaroslav Kysela 2001-11-26 16:08:49 +00:00
parent 72a221be2c
commit bb749766d4
6 changed files with 33 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/pcm.h
View file

@ -318,7 +318,7 @@ enum _snd_pcm_type {
SND_PCM_TYPE_DROUTE,
/** Loopback server plugin (not yet implemented) */
SND_PCM_TYPE_LBSERVER,
/** Linear <-> float format conversion PCM */
/** Linear Integer <-> Linear Float format conversion PCM */
SND_PCM_TYPE_LINEAR_FLOAT,
/** LADSPA integration plugin */
SND_PCM_TYPE_LADSPA,
@ -808,6 +808,7 @@ snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframe
int snd_pcm_format_signed(snd_pcm_format_t format);
int snd_pcm_format_unsigned(snd_pcm_format_t format);
int snd_pcm_format_linear(snd_pcm_format_t format);
int snd_pcm_format_float(snd_pcm_format_t format);
int snd_pcm_format_little_endian(snd_pcm_format_t format);
int snd_pcm_format_big_endian(snd_pcm_format_t format);
int snd_pcm_format_cpu_endian(snd_pcm_format_t format);

2
src/pcm/Makefile.am
View file

@ -7,7 +7,7 @@ libpcm_la_SOURCES = atomic.c mask.c interval.c \
pcm_route.c pcm_mulaw.c pcm_alaw.c pcm_adpcm.c \
pcm_rate.c pcm_plug.c pcm_misc.c pcm_mmap.c pcm_multi.c \
pcm_shm.c pcm_file.c pcm_null.c pcm_share.c \
pcm_meter.c pcm_hooks.c pcm_ladspa.c pcm_symbols.c
pcm_meter.c pcm_hooks.c pcm_lfloat.c pcm_ladspa.c pcm_symbols.c
noinst_HEADERS = atomic.h pcm_local.h pcm_plugin.h mask.h mask_inline.h \
interval.h interval_inline.h plugin_ops.h

6
src/pcm/pcm_local.h
View file

@ -594,3 +594,9 @@ int snd_pcm_conf_generic_id(const char *id);
(1U << SND_PCM_FORMAT_S32_BE) | \
(1U << SND_PCM_FORMAT_U32_LE) | \
(1U << SND_PCM_FORMAT_U32_BE))
#define SND_PCM_FMTBIT_FLOAT \
((1U << SND_PCM_FORMAT_FLOAT_LE) | \
(1U << SND_PCM_FORMAT_FLOAT_BE) | \
(1U << SND_PCM_FORMAT_FLOAT64_LE) | \
(1U << SND_PCM_FORMAT_FLOAT64_BE))

18
src/pcm/pcm_misc.c
View file

@ -81,6 +81,24 @@ int snd_pcm_format_linear(snd_pcm_format_t format)
return snd_pcm_format_signed(format) >= 0;
}
/**
* \brief Return float info for a PCM sample format
* \param format Format
* \return 0 non float, 1 float
*/
int snd_pcm_format_float(snd_pcm_format_t format)
{
switch (format) {
case SNDRV_PCM_FORMAT_FLOAT_LE:
case SNDRV_PCM_FORMAT_FLOAT_BE:
case SNDRV_PCM_FORMAT_FLOAT64_LE:
case SNDRV_PCM_FORMAT_FLOAT64_BE:
return 1;
default:
return 0;
}
}
/**
* \brief Return endian info for a PCM sample format
* \param format Format

6
src/pcm/pcm_share.c
View file

@ -324,7 +324,7 @@ static snd_pcm_uframes_t _snd_pcm_share_slave_missing(snd_pcm_share_slave_t *sla
{
snd_pcm_uframes_t missing = INT_MAX;
struct list_head *i;
snd_pcm_sframes_t avail = snd_pcm_avail_update(slave->pcm);
/* snd_pcm_sframes_t avail = */ snd_pcm_avail_update(slave->pcm);
slave->hw_ptr = *slave->pcm->hw_ptr;
list_for_each(i, &slave->clients) {
snd_pcm_share_t *share = list_entry(i, snd_pcm_share_t, list);
@ -396,7 +396,7 @@ static void _snd_pcm_share_update(snd_pcm_t *pcm)
snd_pcm_share_slave_t *slave = share->slave;
snd_pcm_t *spcm = slave->pcm;
snd_pcm_uframes_t missing;
snd_pcm_sframes_t avail = snd_pcm_avail_update(spcm);
/* snd_pcm_sframes_t avail = */ snd_pcm_avail_update(spcm);
slave->hw_ptr = *slave->pcm->hw_ptr;
missing = _snd_pcm_share_missing(pcm);
if (!slave->polling) {
@ -823,6 +823,8 @@ static int snd_pcm_share_prepare(snd_pcm_t *pcm)
case SND_PCM_STATE_PREPARED:
err = 0;
goto _end;
default: /* nothing todo */
break;
}
if (slave->prepared_count == 0) {
err = snd_pcm_prepare(slave->pcm);

2
src/pcm/pcm_symbols.c
View file

@ -36,6 +36,7 @@ extern const char *_snd_module_pcm_rate;
extern const char *_snd_module_pcm_route;
extern const char *_snd_module_pcm_share;
extern const char *_snd_module_pcm_shm;
extern const char *_snd_module_pcm_lfloat;
extern const char *_snd_module_pcm_ladspa;
static const char **snd_pcm_open_objects[] = {
@ -55,6 +56,7 @@ static const char **snd_pcm_open_objects[] = {
&_snd_module_pcm_route,
&_snd_module_pcm_share,
&_snd_module_pcm_shm,
&_snd_module_pcm_lfloat,
&_snd_module_pcm_ladspa
};