From 710233bbf68c845ec5f1713679f4ff0b74c517de Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 15 Jul 2004 21:18:18 +0000
Subject: implement get_latency native command

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@72 fefdeb5f-60dc-0310-8127-8f9354f1896f
---
 src/protocol-native.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'src/protocol-native.c')

diff --git a/src/protocol-native.c b/src/protocol-native.c
index 56395e98..094c6630 100644
--- a/src/protocol-native.c
+++ b/src/protocol-native.c
@@ -76,6 +76,7 @@ static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag
 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 
 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
     [PA_COMMAND_ERROR] = { NULL },
@@ -93,6 +94,7 @@ static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
     [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
     [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
     [PA_COMMAND_STAT] = { command_stat },
+    [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
 };
 
 /* structure management */
@@ -664,6 +666,38 @@ static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag
     pa_pstream_send_tagstruct(c->pstream, reply);
 }
 
+static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+    struct connection *c = userdata;
+    assert(c && t);
+    struct pa_tagstruct *reply;
+    struct playback_stream *s;
+    uint32_t index, latency;
+
+    if (pa_tagstruct_getu32(t, &index) < 0 ||
+        !pa_tagstruct_eof(t)) {
+        protocol_error(c);
+        return;
+    }
+
+    if (!c->authorized) {
+        pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+        return;
+    }
+
+    if (!(s = pa_idxset_get_by_index(c->playback_streams, index))) {
+        pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
+        return;
+    }
+
+    latency = pa_sink_input_get_latency(s->sink_input);
+    reply = pa_tagstruct_new(NULL, 0);
+    assert(reply);
+    pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+    pa_tagstruct_putu32(reply, tag);
+    pa_tagstruct_putu32(reply, latency);
+    pa_pstream_send_tagstruct(c->pstream, reply);
+}
+
 /*** pstream callbacks ***/
 
 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
-- 
cgit