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jack: improve buffer size callbacks

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Make sure we emit the buffer callback either from the calling thread
or from the thread_loop. Mark the callback as pending and don't call
the process function until the callback has been handled.
This commit is contained in:
Wim Taymans 2020-08-11 11:11:00 +02:00
parent e62b59beb9
commit 753af7c7b3
1 changed files with 52 additions and 13 deletions
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65
pipewire-jack/src/pipewire-jack.c
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@ -210,6 +210,7 @@ struct link {
};
struct context {
struct pw_loop *l;
struct pw_thread_loop *loop; /* thread_lock protects all below */
struct pw_context *context;
@ -330,6 +331,8 @@ struct client {
struct spa_list target_links;
} rt;
int pending;
unsigned int started:1;
unsigned int active:1;
unsigned int destroyed:1;
@ -989,25 +992,59 @@ static inline jack_transport_state_t position_to_jack(struct pw_node_activation
return state;
}
static inline void check_buffer_frames(struct client *c, struct spa_io_position *pos)
static int
do_buffer_frames(struct spa_loop *loop,
bool async, uint32_t seq, const void *data, size_t size, void *user_data)
{
uint32_t buffer_frames = *((uint32_t*)data);
struct client *c = user_data;
if (c->bufsize_callback)
c->bufsize_callback(buffer_frames, c->bufsize_arg);
ATOMIC_DEC(c->pending);
return 0;
}
static inline void check_buffer_frames(struct client *c, struct spa_io_position *pos, bool rt)
{
uint32_t buffer_frames = pos->clock.duration;
if (SPA_UNLIKELY(buffer_frames != c->buffer_frames)) {
pw_log_info(NAME" %p: bufferframes %d", c, buffer_frames);
ATOMIC_INC(c->pending);
c->buffer_frames = buffer_frames;
if (c->bufsize_callback)
c->bufsize_callback(c->buffer_frames, c->bufsize_arg);
if (rt)
pw_loop_invoke(c->context.l, do_buffer_frames, 0,
&buffer_frames, sizeof(buffer_frames), false, c);
else
do_buffer_frames(c->context.l->loop, false, 0,
&buffer_frames, sizeof(buffer_frames), c);
}
}
static inline void check_sample_rate(struct client *c, struct spa_io_position *pos)
static int
do_sample_rate(struct spa_loop *loop,
bool async, uint32_t seq, const void *data, size_t size, void *user_data)
{
struct client *c = user_data;
uint32_t sample_rate = *((uint32_t*)data);
if (c->srate_callback)
c->srate_callback(sample_rate, c->srate_arg);
ATOMIC_DEC(c->pending);
return 0;
}
static inline void check_sample_rate(struct client *c, struct spa_io_position *pos, bool rt)
{
uint32_t sample_rate = pos->clock.rate.denom;
if (SPA_UNLIKELY(sample_rate != c->sample_rate)) {
pw_log_info(NAME" %p: sample_rate %d", c, sample_rate);
ATOMIC_INC(c->pending);
c->sample_rate = sample_rate;
if (c->srate_callback)
c->srate_callback(c->sample_rate, c->srate_arg);
if (rt)
pw_loop_invoke(c->context.l, do_sample_rate, 0,
&sample_rate, sizeof(sample_rate), false, c);
else
do_sample_rate(c->context.l->loop, false, 0,
&sample_rate, sizeof(sample_rate), c);
}
}
@ -1043,8 +1080,8 @@ static inline uint32_t cycle_run(struct client *c)
return 0;
}
check_buffer_frames(c, pos);
check_sample_rate(c, pos);
check_buffer_frames(c, pos, true);
check_sample_rate(c, pos, true);
if (SPA_LIKELY(driver)) {
c->jack_state = position_to_jack(driver, &c->jack_position);
@ -1159,11 +1196,12 @@ on_rtsocket_condition(void *data, int fd, uint32_t mask)
}
} else if (SPA_LIKELY(mask & SPA_IO_IN)) {
uint32_t buffer_frames;
int status;
int status = 0;
buffer_frames = cycle_run(c);
status = c->process_callback ? c->process_callback(buffer_frames, c->process_arg) : 0;
if (!ATOMIC_LOAD(c->pending) && c->process_callback)
status = c->process_callback(buffer_frames, c->process_arg);
cycle_signal(c, status);
}
@ -1335,7 +1373,7 @@ static int client_node_set_io(void *object,
c->driver_id = ptr ? c->position->clock.id : SPA_ID_INVALID;
update_driver_activation(c);
if (ptr)
check_sample_rate(c, c->position);
check_sample_rate(c, c->position, false);
break;
default:
break;
@ -2323,8 +2361,9 @@ jack_client_t * jack_client_open (const char *client_name,
client->node_id = SPA_ID_INVALID;
strncpy(client->name, client_name, JACK_CLIENT_NAME_SIZE);
client->context.loop = pw_thread_loop_new(client_name, NULL);
client->context.l = pw_thread_loop_get_loop(client->context.loop),
client->context.context = pw_context_new(
pw_thread_loop_get_loop(client->context.loop),
client->context.l,
pw_properties_new(
PW_KEY_CONTEXT_PROFILE_MODULES, "default,rtkit",
NULL),
@ -2642,7 +2681,7 @@ int jack_activate (jack_client_t *client)
c->active = true;
if (c->position)
check_buffer_frames(c, c->position);
check_buffer_frames(c, c->position, false);
return 0;
}