[pulseaudio-discuss] [PATCH 1/2] introspect: Add functions to handle the latency offset.
poljar (Damir Jelić)
poljarinho at gmail.com
Thu Jun 28 06:00:45 PDT 2012
From: "poljar (Damir Jelic)" <poljarinho at gmail.com>
This includes updating the native protocol and the client API.
A new command was added to allow setting the latency offset.
Also the card list command now shows the latency offset if there
are ports available.
Update protocol to 27.
---
PROTOCOL | 11 ++++++++++
configure.ac | 2 +-
src/map-file | 1 +
src/pulse/introspect.c | 40 ++++++++++++++++++++++++++++++-----
src/pulse/introspect.h | 4 ++++
src/pulsecore/native-common.h | 3 +++
src/pulsecore/protocol-native.c | 47 +++++++++++++++++++++++++++++++++++++++++
7 files changed, 102 insertions(+), 6 deletions(-)
diff --git a/PROTOCOL b/PROTOCOL
index acd53ba..cb4d23a 100644
--- a/PROTOCOL
+++ b/PROTOCOL
@@ -321,6 +321,17 @@ PA_COMMAND_GET_CARD_INFO_LIST), the following is added:
Profile names must match earlier sent profile names for the same card.
+## v27, implemented by >= 3.0
+
+New opcodes:
+ PA_COMMAND_SET_PORT_LATENCY_OFFSET
+
+New field in the card commands that send/receive port introspection data
+PA_COMMAND_GET_CARD_INFO(_LIST)):
+
+ int64_t latency_offset
+
+The field is added once for every port.
#### If you just changed the protocol, read this
## module-tunnel depends on the sink/source/sink-input/source-input protocol
diff --git a/configure.ac b/configure.ac
index f5f9b76..62cc5f8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,7 @@ AC_SUBST(PA_MINOR, pa_minor)
AC_SUBST(PA_MAJORMINOR, pa_major.pa_minor)
AC_SUBST(PA_API_VERSION, 12)
-AC_SUBST(PA_PROTOCOL_VERSION, 26)
+AC_SUBST(PA_PROTOCOL_VERSION, 27)
# The stable ABI for client applications, for the version info x:y:z
# always will hold y=z
diff --git a/src/map-file b/src/map-file
index 69cf25b..fe34b97 100644
--- a/src/map-file
+++ b/src/map-file
@@ -59,6 +59,7 @@ pa_context_get_source_info_by_name;
pa_context_get_source_info_list;
pa_context_get_source_output_info;
pa_context_get_source_output_info_list;
+pa_context_set_port_latency_offset;
pa_context_get_state;
pa_context_get_tile_size;
pa_context_is_local;
diff --git a/src/pulse/introspect.c b/src/pulse/introspect.c
index 38a9d1c..dae3deb 100644
--- a/src/pulse/introspect.c
+++ b/src/pulse/introspect.c
@@ -763,8 +763,7 @@ pa_operation* pa_context_get_client_info_list(pa_context *c, pa_client_info_cb_t
/*** Card info ***/
-static void card_info_free(pa_card_info* i)
-{
+static void card_info_free(pa_card_info* i) {
if (i->proplist)
pa_proplist_free(i->proplist);
@@ -787,8 +786,7 @@ static void card_info_free(pa_card_info* i)
}
}
-static int fill_card_port_info(pa_tagstruct* t, pa_card_info* i)
-{
+static int fill_card_port_info(pa_context *context, pa_tagstruct* t, pa_card_info* i) {
uint32_t j, k, l;
if (pa_tagstruct_getu32(t, &i->n_ports) < 0)
@@ -849,6 +847,11 @@ static int fill_card_port_info(pa_tagstruct* t, pa_card_info* i)
return -PA_ERR_PROTOCOL;
}
}
+ if (context->version >= 27) {
+ if (pa_tagstruct_gets64(t, &port->latency_offset) < 0)
+ return -PA_ERR_PROTOCOL;
+ } else
+ port->latency_offset = 0;
}
return 0;
@@ -931,7 +934,7 @@ static void context_get_card_info_callback(pa_pdispatch *pd, uint32_t command, u
}
if (o->context->version >= 26) {
- if (fill_card_port_info(t, &i) < 0) {
+ if (fill_card_port_info(o->context, t, &i) < 0) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
card_info_free(&i);
goto finish;
@@ -1868,6 +1871,33 @@ pa_operation* pa_context_unload_module(pa_context *c, uint32_t idx, pa_context_s
return command_kill(c, PA_COMMAND_UNLOAD_MODULE, idx, cb, userdata);
}
+pa_operation* pa_context_set_port_latency_offset(pa_context *c, const char *card_name, const char *port_name, int64_t offset, pa_context_success_cb_t cb, void *userdata) {
+ pa_operation *o;
+ pa_tagstruct *t;
+ uint32_t tag;
+
+ pa_assert(c);
+ pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+ PA_CHECK_VALIDITY_RETURN_NULL(c, card_name && *card_name, PA_ERR_INVALID);
+ PA_CHECK_VALIDITY_RETURN_NULL(c, port_name && *port_name, PA_ERR_INVALID);
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 27, PA_ERR_NOTSUPPORTED);
+
+ o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+ t = pa_tagstruct_command(c, PA_COMMAND_SET_PORT_LATENCY_OFFSET, &tag);
+ pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+ pa_tagstruct_puts(t, card_name);
+ pa_tagstruct_puts(t, port_name);
+ pa_tagstruct_puts64(t, offset);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
/*** Autoload stuff ***/
PA_WARN_REFERENCE(pa_context_get_autoload_info_by_name, "Module auto-loading no longer supported.");
diff --git a/src/pulse/introspect.h b/src/pulse/introspect.h
index 0072f5d..6ea4536 100644
--- a/src/pulse/introspect.h
+++ b/src/pulse/introspect.h
@@ -466,6 +466,7 @@ typedef struct pa_card_port_info {
uint32_t n_profiles; /**< Number of entries in profile array */
pa_card_profile_info** profiles; /**< Array of pointers to available profiles, or NULL. Array is terminated by an entry set to NULL. */
pa_proplist *proplist; /**< Property list */
+ int64_t latency_offset; /**< Latency offset of the port that gets added to the sink/source latency when the port is active. \since 3.0 */
} pa_card_port_info;
/** Stores information about cards. Please note that this structure
@@ -502,6 +503,9 @@ pa_operation* pa_context_set_card_profile_by_index(pa_context *c, uint32_t idx,
/** Change the profile of a card. \since 0.9.15 */
pa_operation* pa_context_set_card_profile_by_name(pa_context *c, const char*name, const char*profile, pa_context_success_cb_t cb, void *userdata);
+/** Set the latency offset of a port. \since 3.0 */
+pa_operation* pa_context_set_port_latency_offset(pa_context *c, const char *card_name, const char *port_name, int64_t offset, pa_context_success_cb_t cb, void *userdata);
+
/** @} */
/** @{ \name Sink Inputs */
diff --git a/src/pulsecore/native-common.h b/src/pulsecore/native-common.h
index 8fde023..dad82e0 100644
--- a/src/pulsecore/native-common.h
+++ b/src/pulsecore/native-common.h
@@ -173,6 +173,9 @@ enum {
PA_COMMAND_SET_SOURCE_OUTPUT_VOLUME,
PA_COMMAND_SET_SOURCE_OUTPUT_MUTE,
+ /* Supported since protocol v27 (3.0) */
+ PA_COMMAND_SET_PORT_LATENCY_OFFSET,
+
PA_COMMAND_MAX
};
diff --git a/src/pulsecore/protocol-native.c b/src/pulsecore/protocol-native.c
index c24254a..deb6a5c 100644
--- a/src/pulsecore/protocol-native.c
+++ b/src/pulsecore/protocol-native.c
@@ -292,6 +292,7 @@ static void command_remove_proplist(pa_pdispatch *pd, uint32_t command, uint32_t
static void command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
static void command_set_card_profile(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
static void command_set_sink_or_source_port(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
+static void command_set_port_latency_offset(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
[PA_COMMAND_ERROR] = NULL,
@@ -393,6 +394,8 @@ static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
[PA_COMMAND_SET_SINK_PORT] = command_set_sink_or_source_port,
[PA_COMMAND_SET_SOURCE_PORT] = command_set_sink_or_source_port,
+ [PA_COMMAND_SET_PORT_LATENCY_OFFSET] = command_set_port_latency_offset,
+
[PA_COMMAND_EXTENSION] = command_extension
};
@@ -3283,6 +3286,9 @@ static void card_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_car
pa_tagstruct_puts(t, p->name);
} else
pa_tagstruct_putu32(t, 0);
+
+ if (c->version >= 27)
+ pa_tagstruct_puts64(t, port->latency_offset);
}
pa_proplist_free(proplist);
@@ -4734,6 +4740,47 @@ static void command_set_sink_or_source_port(pa_pdispatch *pd, uint32_t command,
pa_pstream_send_simple_ack(c->pstream, tag);
}
+static void command_set_port_latency_offset(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+ pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
+ const char *port_name, *card_name;
+ uint32_t idx = PA_INVALID_INDEX;
+ int64_t offset;
+ pa_card *card = NULL;
+ pa_device_port *port = NULL;
+
+ pa_native_connection_assert_ref(c);
+ pa_assert(t);
+
+ if (pa_tagstruct_getu32(t, &idx) < 0 ||
+ pa_tagstruct_gets(t, &card_name) < 0 ||
+ pa_tagstruct_gets(t, &port_name) < 0 ||
+ pa_tagstruct_gets64(t, &offset) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ }
+
+ CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
+ CHECK_VALIDITY(c->pstream, !card_name || pa_namereg_is_valid_name(card_name), tag, PA_ERR_INVALID);
+ CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || card_name, tag, PA_ERR_INVALID);
+ CHECK_VALIDITY(c->pstream, idx == PA_INVALID_INDEX || !card_name, tag, PA_ERR_INVALID);
+ CHECK_VALIDITY(c->pstream, !card_name || idx == PA_INVALID_INDEX, tag, PA_ERR_INVALID);
+ CHECK_VALIDITY(c->pstream, port_name, tag, PA_ERR_INVALID);
+
+ if (idx != PA_INVALID_INDEX)
+ card = pa_idxset_get_by_index(c->protocol->core->cards, idx);
+ else
+ card = pa_namereg_get(c->protocol->core, card_name, PA_NAMEREG_CARD);
+
+ CHECK_VALIDITY(c->pstream, card, tag, PA_ERR_NOENTITY);
+
+ port = pa_hashmap_get(card->ports, port_name);
+ CHECK_VALIDITY(c->pstream, port, tag, PA_ERR_NOENTITY);
+
+ pa_device_port_set_latency_offset(port, offset);
+
+ pa_pstream_send_simple_ack(c->pstream, tag);
+}
+
/*** pstream callbacks ***/
static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const pa_creds *creds, void *userdata) {
--
1.7.11.1
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