File 0007-pcm-Add-sw_params-API-functions-to-get-set-timestamp.patch of Package alsa
From 0d393c29a272b6fc97e9fca3252fb1c58f86e75b Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 10 Jul 2014 14:26:37 +0200
Subject: [PATCH 07/14] pcm: Add sw_params API functions to get/set timestamp
type
For obtaining / changing the timestamp type, add the corresponding
sw_params accessor API functions together with the public definitions
of timestamp types.
This patch only adds the functions and defines but doesn't bring the
functional changes yet.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
include/pcm.h | 9 +++++++++
src/pcm/pcm.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
src/pcm/pcm_local.h | 1 +
src/pcm/pcm_params.c | 1 +
4 files changed, 64 insertions(+)
diff --git a/include/pcm.h b/include/pcm.h
index 95b8aed6de2a..11e9f0dfba13 100644
--- a/include/pcm.h
+++ b/include/pcm.h
@@ -317,6 +317,13 @@ typedef enum _snd_pcm_tstamp {
SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_ENABLE
} snd_pcm_tstamp_t;
+typedef enum _snd_pcm_tstamp_type {
+ SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /** gettimeofday equivalent */
+ SND_PCM_TSTAMP_TYPE_MONOTONIC, /** posix_clock_monotonic equivalent */
+ SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW, /** monotonic_raw (no NTP) */
+ SND_PCM_TSTAMP_TYPE_LAST = SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
+} snd_pcm_tstamp_type_t;
+
/** Unsigned frames quantity */
typedef unsigned long snd_pcm_uframes_t;
/** Signed frames quantity */
@@ -844,6 +851,8 @@ int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uf
int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val);
int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val);
+int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val);
+int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val);
int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val);
diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c
index 7e46014627c2..89844430bf35 100644
--- a/src/pcm/pcm.c
+++ b/src/pcm/pcm.c
@@ -1483,6 +1483,7 @@ int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsign
#define XRUN(v) [SND_PCM_XRUN_##v] = #v
#define SILENCE(v) [SND_PCM_SILENCE_##v] = #v
#define TSTAMP(v) [SND_PCM_TSTAMP_##v] = #v
+#define TSTAMP_TYPE(v) [SND_PCM_TSTAMP_TYPE_##v] = #v
#define ACCESS(v) [SND_PCM_ACCESS_##v] = #v
#define START(v) [SND_PCM_START_##v] = #v
#define HW_PARAM(v) [SND_PCM_HW_PARAM_##v] = #v
@@ -1680,6 +1681,12 @@ static const char *const snd_pcm_tstamp_mode_names[] = {
TSTAMP(NONE),
TSTAMP(ENABLE),
};
+
+static const char *const snd_pcm_tstamp_type_names[] = {
+ TSTAMP_TYPE(GETTIMEOFDAY),
+ TSTAMP_TYPE(MONOTONIC),
+ TSTAMP_TYPE(MONOTONIC_RAW),
+};
#endif
/**
@@ -1826,6 +1833,18 @@ const char *snd_pcm_tstamp_mode_name(snd_pcm_tstamp_t mode)
}
/**
+ * \brief get name of PCM tstamp type setting
+ * \param mode PCM tstamp type
+ * \return ascii name of PCM tstamp type setting
+ */
+const char *snd_pcm_tstamp_type_name(snd_pcm_tstamp_t type)
+{
+ if (type > SND_PCM_TSTAMP_TYPE_LAST)
+ return NULL;
+ return snd_pcm_tstamp_type_names[type];
+}
+
+/**
* \brief get name of PCM state
* \param state PCM state
* \return ascii name of PCM state
@@ -1899,6 +1918,7 @@ int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out)
return -EIO;
}
snd_output_printf(out, " tstamp_mode : %s\n", snd_pcm_tstamp_mode_name(pcm->tstamp_mode));
+ snd_output_printf(out, " tstamp_type : %s\n", snd_pcm_tstamp_type_name(pcm->tstamp_mode));
snd_output_printf(out, " period_step : %d\n", pcm->period_step);
snd_output_printf(out, " avail_min : %ld\n", pcm->avail_min);
snd_output_printf(out, " period_event : %i\n", pcm->period_event);
@@ -5591,6 +5611,7 @@ int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)
return -EIO;
}
params->tstamp_mode = pcm->tstamp_mode;
+ params->tstamp_type = pcm->tstamp_type;
params->period_step = pcm->period_step;
params->sleep_min = 0;
params->avail_min = pcm->avail_min;
@@ -5613,6 +5634,7 @@ int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)
int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out)
{
snd_output_printf(out, "tstamp_mode: %s\n", snd_pcm_tstamp_mode_name(params->tstamp_mode));
+ snd_output_printf(out, "tstamp_type: %s\n", snd_pcm_tstamp_type_name(params->tstamp_type));
snd_output_printf(out, "period_step: %u\n", params->period_step);
snd_output_printf(out, "avail_min: %lu\n", params->avail_min);
snd_output_printf(out, "start_threshold: %ld\n", params->start_threshold);
@@ -5811,6 +5833,37 @@ int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm
}
/**
+ * \brief Set timestamp type inside a software configuration container
+ * \param pcm PCM handle
+ * \param params Software configuration container
+ * \param val Timestamp type
+ * \return 0 otherwise a negative error code
+ */
+int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val)
+{
+ assert(pcm && params);
+ if (CHECK_SANITY(val > SND_PCM_TSTAMP_TYPE_LAST)) {
+ SNDMSG("invalid tstamp_type value %d", val);
+ return -EINVAL;
+ }
+ params->tstamp_type = val;
+ return 0;
+}
+
+/**
+ * \brief Get timestamp type from a software configuration container
+ * \param params Software configuration container
+ * \param val Returned timestamp type
+ * \return 0 otherwise a negative error code
+ */
+int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val)
+{
+ assert(params && val);
+ *val = params->tstamp_type;
+ return 0;
+}
+
+/**
* \brief (DEPRECATED) Set minimum number of ticks to sleep inside a software configuration container
* \param pcm PCM handle
* \param params Software configuration container
diff --git a/src/pcm/pcm_local.h b/src/pcm/pcm_local.h
index 8a6c7431cc40..3ed7e1a88792 100644
--- a/src/pcm/pcm_local.h
+++ b/src/pcm/pcm_local.h
@@ -202,6 +202,7 @@ struct _snd_pcm {
unsigned int period_time; /* period duration */
snd_interval_t periods;
snd_pcm_tstamp_t tstamp_mode; /* timestamp mode */
+ snd_pcm_tstamp_type_t tstamp_type; /* timestamp type */
unsigned int period_step;
snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */
int period_event;
diff --git a/src/pcm/pcm_params.c b/src/pcm/pcm_params.c
index 0b66e8cbbe64..4adbefae0530 100644
--- a/src/pcm/pcm_params.c
+++ b/src/pcm/pcm_params.c
@@ -2258,6 +2258,7 @@ static int snd_pcm_sw_params_default(snd_pcm_t *pcm, snd_pcm_sw_params_t *params
assert(pcm && params);
assert(pcm->setup);
params->tstamp_mode = SND_PCM_TSTAMP_NONE;
+ params->tstamp_type = pcm->tstamp_type;
params->period_step = 1;
params->sleep_min = 0;
params->avail_min = pcm->period_size;
--
2.0.1
