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-rw-r--r--src/pulsecore/protocol-simple.c126
1 files changed, 87 insertions, 39 deletions
diff --git a/src/pulsecore/protocol-simple.c b/src/pulsecore/protocol-simple.c
index 8ec38fe4..cbe48440 100644
--- a/src/pulsecore/protocol-simple.c
+++ b/src/pulsecore/protocol-simple.c
@@ -32,6 +32,7 @@
#include <string.h>
#include <pulse/xmalloc.h>
+#include <pulse/timeval.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/source-output.h>
@@ -42,6 +43,7 @@
#include <pulsecore/core-error.h>
#include <pulsecore/atomic.h>
#include <pulsecore/thread-mq.h>
+#include <pulsecore/core-util.h>
#include "protocol-simple.h"
@@ -57,12 +59,13 @@ typedef struct connection {
pa_client *client;
pa_memblockq *input_memblockq, *output_memblockq;
- int dead;
+ pa_bool_t dead;
struct {
pa_memblock *current_memblock;
- size_t memblock_index, fragment_size;
+ size_t memblock_index;
pa_atomic_t missing;
+ pa_bool_t underrun;
} playback;
} connection;
@@ -101,7 +104,8 @@ enum {
#define PLAYBACK_BUFFER_SECONDS (.5)
#define PLAYBACK_BUFFER_FRAGMENTS (10)
#define RECORD_BUFFER_SECONDS (5)
-#define RECORD_BUFFER_FRAGMENTS (100)
+#define DEFAULT_SINK_LATENCY (300*PA_USEC_PER_MSEC)
+#define DEFAULT_SOURCE_LATENCY (300*PA_USEC_PER_MSEC)
static void connection_unlink(connection *c) {
pa_assert(c);
@@ -140,8 +144,6 @@ static void connection_free(pa_object *o) {
connection *c = CONNECTION(o);
pa_assert(c);
- connection_unref(c);
-
if (c->playback.current_memblock)
pa_memblock_unref(c->playback.current_memblock);
@@ -158,27 +160,33 @@ static int do_read(connection *c) {
ssize_t r;
size_t l;
void *p;
+ size_t space;
connection_assert_ref(c);
if (!c->sink_input || (l = pa_atomic_load(&c->playback.missing)) <= 0)
return 0;
- if (l > c->playback.fragment_size)
- l = c->playback.fragment_size;
+ if (c->playback.current_memblock) {
- if (c->playback.current_memblock)
- if (pa_memblock_get_length(c->playback.current_memblock) - c->playback.memblock_index < l) {
+ space = pa_memblock_get_length(c->playback.current_memblock) - c->playback.memblock_index;
+
+ if (space <= 0) {
pa_memblock_unref(c->playback.current_memblock);
c->playback.current_memblock = NULL;
- c->playback.memblock_index = 0;
}
+ }
if (!c->playback.current_memblock) {
- pa_assert_se(c->playback.current_memblock = pa_memblock_new(c->protocol->core->mempool, l));
+ pa_assert_se(c->playback.current_memblock = pa_memblock_new(c->protocol->core->mempool, 0));
c->playback.memblock_index = 0;
+
+ space = pa_memblock_get_length(c->playback.current_memblock);
}
+ if (l > space)
+ l = space;
+
p = pa_memblock_acquire(c->playback.current_memblock);
r = pa_iochannel_read(c->io, (uint8_t*) p + c->playback.memblock_index, l);
pa_memblock_release(c->playback.current_memblock);
@@ -248,16 +256,16 @@ static void do_work(connection *c) {
if (c->dead)
return;
- if (pa_iochannel_is_readable(c->io)) {
+ if (pa_iochannel_is_readable(c->io))
if (do_read(c) < 0)
goto fail;
- } else if (pa_iochannel_is_hungup(c->io))
+
+ if (!c->sink_input && pa_iochannel_is_hungup(c->io))
goto fail;
- if (pa_iochannel_is_writable(c->io)) {
+ if (pa_iochannel_is_writable(c->io))
if (do_write(c) < 0)
goto fail;
- }
return;
@@ -266,7 +274,7 @@ fail:
if (c->sink_input) {
/* If there is a sink input, we first drain what we already have read before shutting down the connection */
- c->dead = 1;
+ c->dead = TRUE;
pa_iochannel_free(c->io);
c->io = NULL;
@@ -318,15 +326,19 @@ static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int
/* New data from the main loop */
pa_memblockq_push_align(c->input_memblockq, chunk);
+ if (pa_memblockq_is_readable(c->input_memblockq) && c->playback.underrun) {
+ pa_log_debug("Requesting rewind due to end of underrun.");
+ pa_sink_input_request_rewind(c->sink_input, 0, FALSE, TRUE);
+ }
+
/* pa_log("got data, %u", pa_memblockq_get_length(c->input_memblockq)); */
return 0;
}
- case SINK_INPUT_MESSAGE_DISABLE_PREBUF: {
+ case SINK_INPUT_MESSAGE_DISABLE_PREBUF:
pa_memblockq_prebuf_disable(c->input_memblockq);
return 0;
- }
case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
pa_usec_t *r = userdata;
@@ -345,32 +357,60 @@ static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int
/* Called from thread context */
static int sink_input_pop_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
connection *c;
- int r;
- pa_assert(i);
+ pa_sink_input_assert_ref(i);
c = CONNECTION(i->userdata);
connection_assert_ref(c);
pa_assert(chunk);
- if ((r = pa_memblockq_peek(c->input_memblockq, chunk)) < 0) {
+ if (pa_memblockq_peek(c->input_memblockq, chunk) < 0) {
+
+ c->playback.underrun = TRUE;
if (c->dead && pa_sink_input_safe_to_remove(i))
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(c), CONNECTION_MESSAGE_UNLINK_CONNECTION, NULL, 0, NULL, NULL);
+ return -1;
} else {
- size_t old, new;
+ size_t m;
+
+ c->playback.underrun = FALSE;
- old = pa_memblockq_missing(c->input_memblockq);
pa_memblockq_drop(c->input_memblockq, chunk->length);
- new = pa_memblockq_missing(c->input_memblockq);
+ m = pa_memblockq_pop_missing(c->input_memblockq);
- if (new > old) {
- if (pa_atomic_add(&c->playback.missing, new - old) <= 0)
+ if (m > 0)
+ if (pa_atomic_add(&c->playback.missing, m) <= 0)
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(c), CONNECTION_MESSAGE_REQUEST_DATA, NULL, 0, NULL, NULL);
- }
+
+ return 0;
}
+}
+
+/* Called from thread context */
+static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
+ connection *c;
- return r;
+ pa_sink_input_assert_ref(i);
+ c = CONNECTION(i->userdata);
+ connection_assert_ref(c);
+
+ /* If we are in an underrun, then we don't rewind */
+ if (i->thread_info.underrun_for > 0)
+ return;
+
+ pa_memblockq_rewind(c->input_memblockq, nbytes);
+}
+
+/* Called from thread context */
+static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
+ connection *c;
+
+ pa_sink_input_assert_ref(i);
+ c = CONNECTION(i->userdata);
+ connection_assert_ref(c);
+
+ pa_memblockq_set_maxrewind(c->input_memblockq, nbytes);
}
/* Called from main context */
@@ -386,7 +426,7 @@ static void sink_input_kill_cb(pa_sink_input *i) {
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
connection *c;
- pa_assert(o);
+ pa_source_output_assert_ref(o);
c = CONNECTION(o->userdata);
pa_assert(c);
pa_assert(chunk);
@@ -405,7 +445,7 @@ static void source_output_kill_cb(pa_source_output *o) {
static pa_usec_t source_output_get_latency_cb(pa_source_output *o) {
connection*c;
- pa_assert(o);
+ pa_source_output_assert_ref(o);
c = CONNECTION(o->userdata);
pa_assert(c);
@@ -440,7 +480,7 @@ static void io_callback(pa_iochannel*io, void *userdata) {
static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
pa_protocol_simple *p = userdata;
connection *c = NULL;
- char cname[256];
+ char cname[256], pname[128];
pa_assert(s);
pa_assert(io);
@@ -462,12 +502,14 @@ static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata)
c->protocol = p;
c->playback.current_memblock = NULL;
c->playback.memblock_index = 0;
- c->playback.fragment_size = 0;
- c->dead = 0;
+ c->dead = FALSE;
+ c->playback.underrun = TRUE;
pa_atomic_store(&c->playback.missing, 0);
- pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
+ pa_iochannel_socket_peer_to_string(io, pname, sizeof(pname));
+ pa_snprintf(cname, sizeof(cname), "Simple client (%s)", pname);
pa_assert_se(c->client = pa_client_new(p->core, __FILE__, cname));
+ pa_proplist_sets(c->client->proplist, "simple-protocol.peer", pname);
c->client->module = p->module;
c->client->kill = client_kill_cb;
c->client->userdata = c;
@@ -500,21 +542,24 @@ static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata)
c->sink_input->parent.process_msg = sink_input_process_msg;
c->sink_input->pop = sink_input_pop_cb;
+ c->sink_input->process_rewind = sink_input_process_rewind_cb;
+ c->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
c->sink_input->kill = sink_input_kill_cb;
c->sink_input->userdata = c;
+ pa_sink_input_set_requested_latency(c->sink_input, DEFAULT_SINK_LATENCY);
+
l = (size_t) (pa_bytes_per_second(&p->sample_spec)*PLAYBACK_BUFFER_SECONDS);
c->input_memblockq = pa_memblockq_new(
0,
l,
- 0,
+ l,
pa_frame_size(&p->sample_spec),
(size_t) -1,
l/PLAYBACK_BUFFER_FRAGMENTS,
0,
NULL);
- pa_iochannel_socket_set_rcvbuf(io, l/PLAYBACK_BUFFER_FRAGMENTS*5);
- c->playback.fragment_size = l/PLAYBACK_BUFFER_FRAGMENTS;
+ pa_iochannel_socket_set_rcvbuf(io, l);
pa_atomic_store(&c->playback.missing, pa_memblockq_missing(c->input_memblockq));
@@ -551,6 +596,8 @@ static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata)
c->source_output->get_latency = source_output_get_latency_cb;
c->source_output->userdata = c;
+ pa_source_output_set_requested_latency(c->source_output, DEFAULT_SOURCE_LATENCY);
+
l = (size_t) (pa_bytes_per_second(&p->sample_spec)*RECORD_BUFFER_SECONDS);
c->output_memblockq = pa_memblockq_new(
0,
@@ -561,7 +608,7 @@ static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata)
0,
0,
NULL);
- pa_iochannel_socket_set_sndbuf(io, l/RECORD_BUFFER_FRAGMENTS*2);
+ pa_iochannel_socket_set_sndbuf(io, l);
pa_source_output_put(c->source_output);
}
@@ -582,6 +629,7 @@ pa_protocol_simple* pa_protocol_simple_new(pa_core *core, pa_socket_server *serv
pa_assert(core);
pa_assert(server);
+ pa_assert(m);
pa_assert(ma);
p = pa_xnew0(pa_protocol_simple, 1);
@@ -606,7 +654,7 @@ pa_protocol_simple* pa_protocol_simple_new(pa_core *core, pa_socket_server *serv
}
p->mode = enable ? RECORD : 0;
- enable = 1;
+ enable = TRUE;
if (pa_modargs_get_value_boolean(ma, "playback", &enable) < 0) {
pa_log("playback= expects a numeric argument.");
goto fail;
generated by cgit (git 2.34.1) at 2025-11-04 09:44:13 +0000