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pipewire-alsa: Get period_bytes from config

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Use period_bytes constraint from config if present.
This commit is contained in:
Jonas Holmberg 2020-03-12 14:57:18 +01:00
parent 9613f16caf
commit b99313a59e
1 changed files with 34 additions and 14 deletions
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48
pipewire-alsa/alsa-plugins/pcm_pipewire.c
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@ -708,7 +708,7 @@ static snd_pcm_ioplug_callback_t pipewire_pcm_callback = {
};
static int pipewire_set_hw_constraint(snd_pcm_pipewire_t *pw, int rate,
snd_pcm_format_t format, int channels)
snd_pcm_format_t format, int channels, int period_bytes)
{
unsigned int access_list[] = {
SND_PCM_ACCESS_MMAP_INTERLEAVED,
@ -733,6 +733,8 @@ static int pipewire_set_hw_constraint(snd_pcm_pipewire_t *pw, int rate,
int max_rate;
int min_channels;
int max_channels;
int min_period_bytes;
int max_period_bytes;
int err;
if (rate > 0) {
@ -747,6 +749,12 @@ static int pipewire_set_hw_constraint(snd_pcm_pipewire_t *pw, int rate,
min_channels = 1;
max_channels = MAX_CHANNELS;
}
if (period_bytes > 0) {
min_period_bytes = max_period_bytes = period_bytes;
} else {
min_period_bytes = 128;
max_period_bytes = 2*1024*1024;
}
if ((err = snd_pcm_ioplug_set_param_list(&pw->io, SND_PCM_IOPLUG_HW_ACCESS,
SPA_N_ELEMENTS(access_list), access_list)) < 0 ||
@ -756,8 +764,10 @@ static int pipewire_set_hw_constraint(snd_pcm_pipewire_t *pw, int rate,
min_rate, max_rate)) < 0 ||
(err = snd_pcm_ioplug_set_param_minmax(&pw->io, SND_PCM_IOPLUG_HW_BUFFER_BYTES,
16*1024, 4*1024*1024)) < 0 ||
(err = snd_pcm_ioplug_set_param_minmax(&pw->io, SND_PCM_IOPLUG_HW_PERIOD_BYTES,
128, 2*1024*1024)) < 0 ||
(err = snd_pcm_ioplug_set_param_minmax(&pw->io,
SND_PCM_IOPLUG_HW_PERIOD_BYTES,
min_period_bytes,
max_period_bytes)) < 0 ||
(err = snd_pcm_ioplug_set_param_minmax(&pw->io, SND_PCM_IOPLUG_HW_PERIODS,
3, 64)) < 0)
return err;
@ -809,7 +819,8 @@ static int snd_pcm_pipewire_open(snd_pcm_t **pcmp, const char *name,
uint32_t flags,
int rate,
snd_pcm_format_t format,
int channels)
int channels,
int period_bytes)
{
snd_pcm_pipewire_t *pw;
int err;
@ -824,10 +835,10 @@ static int snd_pcm_pipewire_open(snd_pcm_t **pcmp, const char *name,
str = getenv("PIPEWIRE_NODE");
pw_log_debug(NAME" %p: open %s %d %d %08x %d %s %d '%s'", pw, name,
pw_log_debug(NAME" %p: open %s %d %d %08x %d %s %d %d '%s'", pw, name,
stream, mode, flags, rate,
format != SND_PCM_FORMAT_UNKNOWN ? snd_pcm_format_name(format) : "none",
channels, str);
channels, period_bytes, str);
pw->fd = -1;
pw->io.poll_fd = -1;
@ -892,7 +903,8 @@ static int snd_pcm_pipewire_open(snd_pcm_t **pcmp, const char *name,
pw_log_debug(NAME" %p: open %s %d %d", pw, name, pw->io.stream, mode);
if ((err = pipewire_set_hw_constraint(pw, rate, format, channels)) < 0)
if ((err = pipewire_set_hw_constraint(pw, rate, format, channels,
period_bytes)) < 0)
goto error;
*pcmp = pw->io.pcm;
@ -916,6 +928,7 @@ SND_PCM_PLUGIN_DEFINE_FUNC(pipewire)
snd_pcm_format_t format = SND_PCM_FORMAT_UNKNOWN;
int rate = 0;
int channels = 0;
int period_bytes = 0;
uint32_t flags = 0;
int err;
@ -955,7 +968,7 @@ SND_PCM_PLUGIN_DEFINE_FUNC(pipewire)
if (snd_config_get_integer(n, &val) == 0)
rate = val;
else
pw_log_error(NAME" %s: invalid type", id);
SNDERR("%s: invalid type", id);
continue;
}
if (strcmp(id, "format") == 0) {
@ -964,21 +977,28 @@ SND_PCM_PLUGIN_DEFINE_FUNC(pipewire)
if (snd_config_get_string(n, &str) == 0) {
format = snd_pcm_format_value(str);
if (format == SND_PCM_FORMAT_UNKNOWN)
pw_log_error(NAME" invalid format %s",
str);
SNDERR("%s: invalid value %s", id, str);
} else {
pw_log_error(NAME" %s: invalid type", id);
SNDERR("%s: invalid type", id);
}
continue;
}
if (strcmp(id, "channels") == 0) {
long val;
if (snd_config_get_integer(n, &val) == 0)
channels = val;
else
pw_log_error(NAME" %s: invalid type", id);
SNDERR("%s: invalid type", id);
continue;
}
if (strcmp(id, "period_bytes") == 0) {
long val;
if (snd_config_get_integer(n, &val) == 0)
period_bytes = val;
else
SNDERR("%s: invalid type", id);
continue;
}
SNDERR("Unknown field %s", id);
@ -987,7 +1007,7 @@ SND_PCM_PLUGIN_DEFINE_FUNC(pipewire)
err = snd_pcm_pipewire_open(pcmp, name, node_name, playback_node,
capture_node, stream, mode, flags, rate, format,
channels);
channels, period_bytes);
return err;
}