/***
This file is part of PulseAudio.
-
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
-
+
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
pa_stream *pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map) {
pa_stream *s;
int i;
-
+
assert(c);
PA_CHECK_VALIDITY_RETURN_NULL(c, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID);
s->channel_map = *map;
else
pa_channel_map_init_auto(&s->channel_map, ss->channels, PA_CHANNEL_MAP_DEFAULT);
-
+
s->channel = 0;
s->channel_valid = 0;
s->syncid = c->csyncid++;
s->peek_memchunk.index = 0;
s->peek_memchunk.length = 0;
s->peek_memchunk.memblock = NULL;
+ s->peek_data = NULL;
s->record_memblockq = NULL;
for (i = 0; i < PA_MAX_WRITE_INDEX_CORRECTIONS; i++)
s->write_index_corrections[i].valid = 0;
s->current_write_index_correction = 0;
-
+
s->corked = 0;
s->cached_time_valid = 0;
-
+
s->auto_timing_update_event = NULL;
s->auto_timing_update_requested = 0;
s->mainloop->time_free(s->auto_timing_update_event);
}
- if (s->peek_memchunk.memblock)
+ if (s->peek_memchunk.memblock) {
+ if (s->peek_data)
+ pa_memblock_release(s->peek_memchunk.memblock);
pa_memblock_unref(s->peek_memchunk.memblock);
+ }
if (s->record_memblockq)
pa_memblockq_free(s->record_memblockq);
pa_stream* pa_stream_ref(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
-
+
s->ref++;
return s;
}
pa_stream_state_t pa_stream_get_state(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
-
+
return s->state;
}
pa_context* pa_stream_get_context(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
-
+
return s->context;
}
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, PA_INVALID_INDEX);
-
+
return s->device_index;
}
-
+
void pa_stream_set_state(pa_stream *s, pa_stream_state_t st) {
assert(s);
assert(s->ref >= 1);
if (s->state == st)
return;
-
+
pa_stream_ref(s);
s->state = st;
/* Unref all operatio object that point to us */
for (o = s->context->operations; o; o = n) {
n = o->next;
-
+
if (o->stream == s)
pa_operation_cancel(o);
}
-
+
/* Drop all outstanding replies for this stream */
if (s->context->pdispatch)
pa_pdispatch_unregister_reply(s->context->pdispatch, s);
if (s->channel_valid)
pa_dynarray_put((s->direction == PA_STREAM_PLAYBACK) ? s->context->playback_streams : s->context->record_streams, s->channel, NULL);
-
+
PA_LLIST_REMOVE(pa_stream, s->context->streams, s);
pa_stream_unref(s);
s->channel = 0;
s->channel_valid = 0;
-
+
s->context = NULL;
}
pa_context *c = userdata;
pa_stream *s;
uint32_t channel;
-
+
assert(pd);
assert(command == PA_COMMAND_PLAYBACK_STREAM_KILLED || command == PA_COMMAND_RECORD_STREAM_KILLED);
assert(t);
assert(c);
pa_context_ref(c);
-
+
if (pa_tagstruct_getu32(t, &channel) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
-
+
if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, channel)))
goto finish;
pa_stream *s;
pa_context *c = userdata;
uint32_t bytes, channel;
-
+
assert(pd);
assert(command == PA_COMMAND_REQUEST);
assert(t);
assert(c);
pa_context_ref(c);
-
+
if (pa_tagstruct_getu32(t, &channel) < 0 ||
pa_tagstruct_getu32(t, &bytes) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
-
+
if (!(s = pa_dynarray_get(c->playback_streams, channel)))
goto finish;
if (s->state == PA_STREAM_READY) {
s->requested_bytes += bytes;
-
+
if (s->requested_bytes > 0 && s->write_callback)
s->write_callback(s, s->requested_bytes, s->write_userdata);
}
assert(c);
pa_context_ref(c);
-
+
if (pa_tagstruct_getu32(t, &channel) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
-
+
if (!(s = pa_dynarray_get(c->playback_streams, channel)))
goto finish;
if (!(s->flags & PA_STREAM_AUTO_TIMING_UPDATE))
return;
-
+
if (s->state == PA_STREAM_READY &&
(force || !s->auto_timing_update_requested)) {
pa_operation *o;
-
+
/* pa_log("automatically requesting new timing data"); */
if ((o = pa_stream_update_timing_info(s, NULL, NULL))) {
assert(s);
/* pa_log("invalidate r:%u w:%u tag:%u", r, w, s->context->ctag); */
-
+
if (s->state != PA_STREAM_READY)
return;
if (w) {
s->write_index_not_before = s->context->ctag;
-
+
if (s->timing_info_valid)
s->timing_info.write_index_corrupt = 1;
-
+
/* pa_log("write_index invalidated"); */
}
-
+
if (r) {
s->read_index_not_before = s->context->ctag;
-
+
if (s->timing_info_valid)
s->timing_info.read_index_corrupt = 1;
-
+
/* pa_log("read_index invalidated"); */
}
-
+
if ((s->direction == PA_STREAM_PLAYBACK && r) ||
(s->direction == PA_STREAM_RECORD && w))
s->cached_time_valid = 0;
-
+
request_auto_timing_update(s, 1);
}
void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_stream *s = userdata;
-
+
assert(pd);
assert(s);
assert(s->state == PA_STREAM_CREATING);
-
+
pa_stream_ref(s);
-
+
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(s->context, command, t) < 0)
goto finish;
-
+
pa_stream_set_state(s, PA_STREAM_FAILED);
goto finish;
}
if (s->direction == PA_STREAM_RECORD) {
assert(!s->record_memblockq);
-
+
s->record_memblockq = pa_memblockq_new(
- 0,
+ 0,
s->buffer_attr.maxlength,
0,
pa_frame_size(&s->sample_spec),
1,
0,
- NULL,
- s->context->memblock_stat);
+ NULL);
}
s->channel_valid = 1;
pa_dynarray_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, s->channel, s);
pa_stream_set_state(s, PA_STREAM_READY);
-
+
if (s->direction != PA_STREAM_UPLOAD &&
s->flags & PA_STREAM_AUTO_TIMING_UPDATE) {
struct timeval tv;
pa_stream_flags_t flags,
const pa_cvolume *volume,
pa_stream *sync_stream) {
-
+
pa_tagstruct *t;
uint32_t tag;
-
+
assert(s);
assert(s->ref >= 1);
-
+
PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_UNCONNECTED, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, !(flags & ~((direction != PA_STREAM_UPLOAD ?
PA_STREAM_START_CORKED|
s->direction = direction;
s->flags = flags;
-
+
if (sync_stream)
s->syncid = sync_stream->syncid;
-
+
if (attr)
s->buffer_attr = *attr;
else {
s->context,
s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CREATE_PLAYBACK_STREAM : PA_COMMAND_CREATE_RECORD_STREAM,
&tag);
-
+
pa_tagstruct_put(
t,
PA_TAG_STRING, s->name,
PA_TAG_U32, s->buffer_attr.maxlength,
PA_TAG_BOOLEAN, !!(flags & PA_STREAM_START_CORKED),
PA_TAG_INVALID);
-
+
if (s->direction == PA_STREAM_PLAYBACK) {
pa_cvolume cv;
if (!volume)
volume = pa_cvolume_reset(&cv, s->sample_spec.channels);
-
+
pa_tagstruct_put_cvolume(t, volume);
} else
pa_tagstruct_putu32(t, s->buffer_attr.fragsize);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_create_stream_callback, s, NULL);
pa_stream_set_state(s, PA_STREAM_CREATING);
-
+
pa_stream_unref(s);
return 0;
}
pa_stream_flags_t flags,
pa_cvolume *volume,
pa_stream *sync_stream) {
-
+
assert(s);
assert(s->ref >= 1);
-
+
return create_stream(PA_STREAM_PLAYBACK, s, dev, attr, flags, volume, sync_stream);
}
const char *dev,
const pa_buffer_attr *attr,
pa_stream_flags_t flags) {
-
+
assert(s);
assert(s->ref >= 1);
void (*free_cb)(void *p),
int64_t offset,
pa_seek_mode_t seek) {
-
+
pa_memchunk chunk;
-
+
assert(s);
assert(s->ref >= 1);
assert(data);
if (length <= 0)
return 0;
- if (free_cb)
- chunk.memblock = pa_memblock_new_user((void*) data, length, free_cb, 1, s->context->memblock_stat);
+ if (free_cb)
+ chunk.memblock = pa_memblock_new_user(s->context->mempool, (void*) data, length, free_cb, 1);
else {
- chunk.memblock = pa_memblock_new(length, s->context->memblock_stat);
- memcpy(chunk.memblock->data, data, length);
+ void *tdata;
+ chunk.memblock = pa_memblock_new(s->context->mempool, length);
+ tdata = pa_memblock_acquire(chunk.memblock);
+ memcpy(tdata, data, length);
+ pa_memblock_release(chunk.memblock);
}
-
+
chunk.index = 0;
chunk.length = length;
pa_pstream_send_memblock(s->context->pstream, s->channel, offset, seek, &chunk);
pa_memblock_unref(chunk.memblock);
-
+
if (length < s->requested_bytes)
s->requested_bytes -= length;
else
s->requested_bytes = 0;
if (s->direction == PA_STREAM_PLAYBACK) {
-
+
/* Update latency request correction */
if (s->write_index_corrections[s->current_write_index_correction].valid) {
-
+
if (seek == PA_SEEK_ABSOLUTE) {
s->write_index_corrections[s->current_write_index_correction].corrupt = 0;
s->write_index_corrections[s->current_write_index_correction].absolute = 1;
} else
s->write_index_corrections[s->current_write_index_correction].corrupt = 1;
}
-
+
/* Update the write index in the already available latency data */
if (s->timing_info_valid) {
-
+
if (seek == PA_SEEK_ABSOLUTE) {
s->timing_info.write_index_corrupt = 0;
s->timing_info.write_index = offset + length;
if (!s->timing_info_valid || s->timing_info.write_index_corrupt)
request_auto_timing_update(s, 1);
}
-
+
return 0;
}
PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
-
+
if (!s->peek_memchunk.memblock) {
if (pa_memblockq_peek(s->record_memblockq, &s->peek_memchunk) < 0) {
*length = 0;
return 0;
}
+
+ s->peek_data = pa_memblock_acquire(s->peek_memchunk.memblock);
}
- *data = (const char*) s->peek_memchunk.memblock->data + s->peek_memchunk.index;
+ assert(s->peek_data);
+ *data = (uint8_t*) s->peek_data + s->peek_memchunk.index;
*length = s->peek_memchunk.length;
return 0;
}
PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, s->peek_memchunk.memblock, PA_ERR_BADSTATE);
-
- pa_memblockq_drop(s->record_memblockq, &s->peek_memchunk, s->peek_memchunk.length);
+
+ pa_memblockq_drop(s->record_memblockq, s->peek_memchunk.length);
/* Fix the simulated local read index */
if (s->timing_info_valid && !s->timing_info.read_index_corrupt)
s->timing_info.read_index += s->peek_memchunk.length;
-
+
+ assert(s->peek_data);
+ pa_memblock_release(s->peek_memchunk.memblock);
pa_memblock_unref(s->peek_memchunk.memblock);
s->peek_memchunk.length = 0;
s->peek_memchunk.index = 0;
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (size_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_RECORD, PA_ERR_BADSTATE, (size_t) -1);
-
+
return s->requested_bytes;
}
pa_operation *o;
pa_tagstruct *t;
uint32_t tag;
-
+
assert(s);
assert(s->ref >= 1);
pa_operation *o = userdata;
struct timeval local, remote, now;
pa_timing_info *i;
-
+
assert(pd);
assert(o);
i = &o->stream->timing_info;
/* pa_log("pre corrupt w:%u r:%u\n", !o->stream->timing_info_valid || i->write_index_corrupt,!o->stream->timing_info_valid || i->read_index_corrupt); */
-
+
o->stream->timing_info_valid = 0;
i->write_index_corrupt = 0;
i->read_index_corrupt = 0;
!pa_tagstruct_eof(t)) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
-
+
} else {
o->stream->timing_info_valid = 1;
pa_gettimeofday(&now);
-
+
/* Calculcate timestamps */
if (pa_timeval_cmp(&local, &remote) <= 0 && pa_timeval_cmp(&remote, &now) <= 0) {
/* local and remote seem to have synchronized clocks */
-
+
if (o->stream->direction == PA_STREAM_PLAYBACK)
i->transport_usec = pa_timeval_diff(&remote, &local);
else
i->transport_usec = pa_timeval_diff(&now, &remote);
-
+
i->synchronized_clocks = 1;
i->timestamp = remote;
} else {
uint32_t ctag = tag;
/* Go through the saved correction values and add up the total correction.*/
-
+
for (n = 0, j = o->stream->current_write_index_correction+1;
n < PA_MAX_WRITE_INDEX_CORRECTIONS;
n++, j = (j + 1) % PA_MAX_WRITE_INDEX_CORRECTIONS) {
if (!i->read_index_corrupt)
i->read_index -= pa_memblockq_get_length(o->stream->record_memblockq);
}
-
+
o->stream->cached_time_valid = 0;
}
o->stream->auto_timing_update_requested = 0;
/* pa_log("post corrupt w:%u r:%u\n", i->write_index_corrupt || !o->stream->timing_info_valid, i->read_index_corrupt || !o->stream->timing_info_valid); */
-
+
/* Clear old correction entries */
if (o->stream->direction == PA_STREAM_PLAYBACK) {
int n;
-
+
for (n = 0; n < PA_MAX_WRITE_INDEX_CORRECTIONS; n++) {
if (!o->stream->write_index_corrections[n].valid)
continue;
-
+
if (o->stream->write_index_corrections[n].tag <= tag)
o->stream->write_index_corrections[n].valid = 0;
}
if (o->stream->latency_update_callback)
o->stream->latency_update_callback(o->stream, o->stream->latency_update_userdata);
-
+
if (o->callback && o->stream && o->stream->state == PA_STREAM_READY) {
pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
cb(o->stream, o->stream->timing_info_valid, o->userdata);
}
-
+
finish:
pa_operation_done(o);
pa_tagstruct *t;
struct timeval now;
int cidx = 0;
-
+
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-
+
if (s->direction == PA_STREAM_PLAYBACK) {
/* Find a place to store the write_index correction data for this entry */
cidx = (s->current_write_index_correction + 1) % PA_MAX_WRITE_INDEX_CORRECTIONS;
-
+
/* Check if we could allocate a correction slot. If not, there are too many outstanding queries */
PA_CHECK_VALIDITY_RETURN_NULL(s->context, !s->write_index_corrections[cidx].valid, PA_ERR_INTERNAL);
}
o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
-
+
t = pa_tagstruct_command(
s->context,
s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_GET_PLAYBACK_LATENCY : PA_COMMAND_GET_RECORD_LATENCY,
&tag);
pa_tagstruct_putu32(t, s->channel);
pa_tagstruct_put_timeval(t, pa_gettimeofday(&now));
-
+
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_timing_info_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
o->stream->write_index_corrections[cidx].value = 0;
o->stream->write_index_corrections[cidx].corrupt = 0;
}
-
+
/* pa_log("requesting update %u\n", tag); */
-
+
return o;
}
void pa_stream_disconnect_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_stream *s = userdata;
-
+
assert(pd);
assert(s);
assert(s->ref >= 1);
int pa_stream_disconnect(pa_stream *s) {
pa_tagstruct *t;
uint32_t tag;
-
+
assert(s);
assert(s->ref >= 1);
void pa_stream_set_overflow_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
assert(s);
assert(s->ref >= 1);
-
+
s->overflow_callback = cb;
s->overflow_userdata = userdata;
}
void pa_stream_set_underflow_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
assert(s);
assert(s->ref >= 1);
-
+
s->underflow_callback = cb;
s->underflow_userdata = userdata;
}
void pa_stream_set_latency_update_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
assert(s);
assert(s->ref >= 1);
-
+
s->latency_update_callback = cb;
s->latency_update_userdata = userdata;
}
void pa_stream_simple_ack_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_operation *o = userdata;
int success = 1;
-
+
assert(pd);
assert(o);
assert(o->ref >= 1);
if (!o->context)
goto finish;
-
+
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(o->context, command, t) < 0)
goto finish;
pa_operation *o;
pa_tagstruct *t;
uint32_t tag;
-
+
assert(s);
assert(s->ref >= 1);
-
+
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
s->corked = b;
-
+
o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(
pa_tagstruct *t;
pa_operation *o;
uint32_t tag;
-
+
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-
+
o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(s->context, command, &tag);
pa_operation* pa_stream_flush(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
pa_operation *o;
-
+
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-
+
if ((o = stream_send_simple_command(s, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_FLUSH_PLAYBACK_STREAM : PA_COMMAND_FLUSH_RECORD_STREAM, cb, userdata))) {
if (s->direction == PA_STREAM_PLAYBACK) {
if (s->write_index_corrections[s->current_write_index_correction].valid)
s->write_index_corrections[s->current_write_index_correction].corrupt = 1;
-
+
if (s->timing_info_valid)
s->timing_info.write_index_corrupt = 1;
- if (s->buffer_attr.prebuf > 0)
+ if (s->buffer_attr.prebuf > 0)
invalidate_indexes(s, 1, 0);
else
request_auto_timing_update(s, 1);
} else
invalidate_indexes(s, 0, 1);
}
-
+
return o;
}
pa_operation* pa_stream_trigger(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
pa_operation *o;
-
+
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE);
if ((o = stream_send_simple_command(s, PA_COMMAND_TRIGGER_PLAYBACK_STREAM, cb, userdata)))
invalidate_indexes(s, 1, 0);
-
+
return o;
}
pa_operation *o;
pa_tagstruct *t;
uint32_t tag;
-
+
assert(s);
assert(s->ref >= 1);
assert(name);
* to us, we assume that the real output time is actually
* a little ahead */
usec += s->timing_info.transport_usec;
-
+
/* However, the output device usually maintains a buffer
too, hence the real sample currently played is a little
back */
else
usec -= s->timing_info.sink_usec;
}
-
+
} else if (s->direction == PA_STREAM_RECORD) {
/* The last byte written into the server side queue had
* this time value associated */
if (!s->corked) {
/* Add transport latency */
usec += s->timing_info.transport_usec;
-
+
/* Add latency of data in device buffer */
usec += s->timing_info.source_usec;
-
+
/* If this is a monitor source, we need to correct the
* time by the playback device buffer */
if (s->timing_info.sink_usec >= usec)
if (r_usec)
*r_usec = usec;
-
+
return 0;
}
static pa_usec_t time_counter_diff(pa_stream *s, pa_usec_t a, pa_usec_t b, int *negative) {
assert(s);
assert(s->ref >= 1);
-
+
if (negative)
*negative = 0;
- if (a >= b)
+ if (a >= b)
return a-b;
else {
if (negative && s->direction == PA_STREAM_RECORD) {
PA_CHECK_VALIDITY(s->context, s->timing_info_valid, PA_ERR_NODATA);
PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_PLAYBACK || !s->timing_info.write_index_corrupt, PA_ERR_NODATA);
PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_RECORD || !s->timing_info.read_index_corrupt, PA_ERR_NODATA);
-
+
if ((r = pa_stream_get_time(s, &t)) < 0)
return r;
if (cindex < 0)
cindex = 0;
-
+
c = pa_bytes_to_usec(cindex, &s->sample_spec);
if (s->direction == PA_STREAM_PLAYBACK)