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pulseaudio/src/polyp/stream.c
Pierre Ossman fbaaf5acb7 The tag argument is no longer unused. 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@620 fefdeb5f-60dc-0310-8127-8f9354f1896f
2006-03-02 16:40:23 +00:00

1110 lines
33 KiB
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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio 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.
polypaudio 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 polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <string.h>
#include <polyp/def.h>
#include <polypcore/xmalloc.h>
#include <polypcore/pstream-util.h>
#include <polypcore/util.h>
#include <polypcore/log.h>
#include <polypcore/hashmap.h>
#include "internal.h"
#define LATENCY_IPOL_INTERVAL_USEC (10000L)
#define COUNTER_HASHMAP_MAXSIZE (5)
pa_stream *pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map) {
pa_stream *s;
assert(c);
PA_CHECK_VALIDITY_RETURN_NULL(c, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID);
PA_CHECK_VALIDITY_RETURN_NULL(c, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID);
s = pa_xnew(pa_stream, 1);
s->ref = 1;
s->context = c;
s->mainloop = c->mainloop;
s->read_callback = NULL;
s->read_userdata = NULL;
s->write_callback = NULL;
s->write_userdata = NULL;
s->state_callback = NULL;
s->state_userdata = NULL;
s->overflow_callback = NULL;
s->overflow_userdata = NULL;
s->underflow_callback = NULL;
s->underflow_userdata = NULL;
s->direction = PA_STREAM_NODIRECTION;
s->name = pa_xstrdup(name);
s->sample_spec = *ss;
if (map)
s->channel_map = *map;
else
pa_channel_map_init_auto(&s->channel_map, ss->channels);
s->channel = 0;
s->channel_valid = 0;
s->syncid = c->csyncid++;
s->device_index = PA_INVALID_INDEX;
s->requested_bytes = 0;
s->state = PA_STREAM_UNCONNECTED;
memset(&s->buffer_attr, 0, sizeof(s->buffer_attr));
s->peek_memchunk.index = 0;
s->peek_memchunk.length = 0;
s->peek_memchunk.memblock = NULL;
s->record_memblockq = NULL;
s->counter_hashmap = pa_hashmap_new(NULL, NULL);
s->counter = 0;
s->previous_time = 0;
s->previous_ipol_time = 0;
s->corked = 0;
s->interpolate = 0;
s->ipol_usec = 0;
memset(&s->ipol_timestamp, 0, sizeof(s->ipol_timestamp));
s->ipol_event = NULL;
s->ipol_requested = 0;
PA_LLIST_PREPEND(pa_stream, c->streams, s);
return pa_stream_ref(s);
}
static void hashmap_free_func(void *p, void *userdata) {
pa_xfree(p);
}
static void stream_free(pa_stream *s) {
assert(s);
if (s->ipol_event) {
assert(s->mainloop);
s->mainloop->time_free(s->ipol_event);
}
if (s->peek_memchunk.memblock)
pa_memblock_unref(s->peek_memchunk.memblock);
if (s->record_memblockq)
pa_memblockq_free(s->record_memblockq);
if (s->counter_hashmap)
pa_hashmap_free(s->counter_hashmap, hashmap_free_func, NULL);
pa_xfree(s->name);
pa_xfree(s);
}
void pa_stream_unref(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
if (--(s->ref) == 0)
stream_free(s);
}
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;
}
uint32_t pa_stream_get_index(pa_stream *s) {
assert(s);
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;
if ((st == PA_STREAM_FAILED || st == PA_STREAM_TERMINATED) && s->context) {
/* Detach from context */
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);
}
if (s->state_callback)
s->state_callback(s, s->state_userdata);
pa_stream_unref(s);
}
void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
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_context_set_error(c, PA_ERR_KILLED);
pa_stream_set_state(s, PA_STREAM_FAILED);
finish:
pa_context_unref(c);
}
void pa_command_request(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
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);
}
finish:
pa_context_unref(c);
}
void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_stream *s;
pa_context *c = userdata;
uint32_t channel;
assert(pd);
assert(command == PA_COMMAND_OVERFLOW || command == PA_COMMAND_UNDERFLOW);
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(c->playback_streams, channel)))
goto finish;
if (s->state == PA_STREAM_READY) {
if (command == PA_COMMAND_OVERFLOW) {
if (s->overflow_callback)
s->overflow_callback(s, s->overflow_userdata);
} else if (command == PA_COMMAND_UNDERFLOW) {
if (s->underflow_callback)
s->underflow_callback(s, s->underflow_userdata);
}
}
finish:
pa_context_unref(c);
}
static void ipol_callback(pa_mainloop_api *m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
struct timeval next;
pa_stream *s = userdata;
pa_stream_ref(s);
/* pa_log("requesting new ipol data"); */
if (s->state == PA_STREAM_READY && !s->ipol_requested) {
pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL));
s->ipol_requested = 1;
}
pa_gettimeofday(&next);
pa_timeval_add(&next, LATENCY_IPOL_INTERVAL_USEC);
m->time_restart(e, &next);
pa_stream_unref(s);
}
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(t);
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 (pa_tagstruct_getu32(t, &s->channel) < 0 ||
((s->direction != PA_STREAM_UPLOAD) && pa_tagstruct_getu32(t, &s->device_index) < 0) ||
((s->direction != PA_STREAM_RECORD) && pa_tagstruct_getu32(t, &s->requested_bytes) < 0) ||
!pa_tagstruct_eof(t)) {
pa_context_fail(s->context, PA_ERR_PROTOCOL);
goto finish;
}
if (s->direction == PA_STREAM_RECORD) {
assert(!s->record_memblockq);
s->record_memblockq = pa_memblockq_new(
0,
s->buffer_attr.maxlength,
0,
pa_frame_size(&s->sample_spec),
1,
0,
NULL,
s->context->memblock_stat);
}
s->channel_valid = 1;
pa_dynarray_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, s->channel, s);
if (s->interpolate) {
struct timeval tv;
pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL));
pa_gettimeofday(&tv);
tv.tv_usec += LATENCY_IPOL_INTERVAL_USEC; /* every 100 ms */
assert(!s->ipol_event);
s->ipol_event = s->mainloop->time_new(s->mainloop, &tv, &ipol_callback, s);
}
pa_stream_set_state(s, PA_STREAM_READY);
if (s->requested_bytes > 0 && s->ref > 1 && s->write_callback)
s->write_callback(s, s->requested_bytes, s->write_userdata);
finish:
pa_stream_unref(s);
}
static int create_stream(
pa_stream_direction_t direction,
pa_stream *s,
const char *dev,
const pa_buffer_attr *attr,
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 & ~(PA_STREAM_START_CORKED|PA_STREAM_INTERPOLATE_LATENCY)), PA_ERR_INVALID);
PA_CHECK_VALIDITY(s->context, direction == PA_STREAM_PLAYBACK || flags == 0, PA_ERR_INVALID);
PA_CHECK_VALIDITY(s->context, !volume || volume->channels == s->sample_spec.channels, PA_ERR_INVALID);
PA_CHECK_VALIDITY(s->context, !sync_stream || (direction == PA_STREAM_PLAYBACK && sync_stream->direction == PA_STREAM_PLAYBACK), PA_ERR_INVALID);
pa_stream_ref(s);
s->direction = direction;
if (sync_stream)
s->syncid = sync_stream->syncid;
s->interpolate = !!(flags & PA_STREAM_INTERPOLATE_LATENCY);
pa_stream_trash_ipol(s);
if (attr)
s->buffer_attr = *attr;
else {
/* half a second */
s->buffer_attr.tlength = pa_bytes_per_second(&s->sample_spec)/2;
s->buffer_attr.maxlength = (s->buffer_attr.tlength*3)/2;
s->buffer_attr.minreq = s->buffer_attr.tlength/100;
s->buffer_attr.prebuf = s->buffer_attr.tlength - s->buffer_attr.minreq;
s->buffer_attr.fragsize = s->buffer_attr.tlength/100;
}
if (!dev)
dev = s->direction == PA_STREAM_PLAYBACK ? s->context->conf->default_sink : s->context->conf->default_source;
t = pa_tagstruct_command(
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_SAMPLE_SPEC, &s->sample_spec,
PA_TAG_CHANNEL_MAP, &s->channel_map,
PA_TAG_U32, PA_INVALID_INDEX,
PA_TAG_STRING, dev,
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;
pa_tagstruct_put(
t,
PA_TAG_U32, s->buffer_attr.tlength,
PA_TAG_U32, s->buffer_attr.prebuf,
PA_TAG_U32, s->buffer_attr.minreq,
PA_TAG_U32, s->syncid,
PA_TAG_INVALID);
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_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_create_stream_callback, s);
pa_stream_set_state(s, PA_STREAM_CREATING);
pa_stream_unref(s);
return 0;
}
int pa_stream_connect_playback(
pa_stream *s,
const char *dev,
const pa_buffer_attr *attr,
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);
}
int pa_stream_connect_record(
pa_stream *s,
const char *dev,
const pa_buffer_attr *attr,
pa_stream_flags_t flags) {
assert(s);
assert(s->ref >= 1);
return create_stream(PA_STREAM_RECORD, s, dev, attr, flags, NULL, NULL);
}
int pa_stream_write(
pa_stream *s,
const void *data,
size_t length,
void (*free_cb)(void *p),
int64_t offset,
pa_seek_mode_t seek) {
pa_memchunk chunk;
assert(s);
assert(s->ref >= 1);
assert(data);
PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_PLAYBACK || s->direction == PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, seek <= PA_SEEK_RELATIVE_END, PA_ERR_INVALID);
PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_PLAYBACK || (seek == PA_SEEK_RELATIVE && offset == 0), PA_ERR_INVALID);
if (length <= 0)
return 0;
if (free_cb)
chunk.memblock = pa_memblock_new_user((void*) data, length, free_cb, 1, s->context->memblock_stat);
else {
chunk.memblock = pa_memblock_new(length, s->context->memblock_stat);
memcpy(chunk.memblock->data, data, length);
}
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;
s->counter += length;
return 0;
}
int pa_stream_peek(pa_stream *s, const void **data, size_t *length) {
assert(s);
assert(s->ref >= 1);
assert(data);
assert(length);
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) {
*data = NULL;
*length = 0;
return 0;
}
}
*data = (const char*) s->peek_memchunk.memblock->data + s->peek_memchunk.index;
*length = s->peek_memchunk.length;
return 0;
}
int pa_stream_drop(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
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_memblock_unref(s->peek_memchunk.memblock);
s->peek_memchunk.length = 0;
s->peek_memchunk.index = 0;
s->peek_memchunk.memblock = NULL;
s->counter += s->peek_memchunk.length;
return 0;
}
size_t pa_stream_writable_size(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
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_PLAYBACK, PA_ERR_BADSTATE, (size_t) -1);
return s->requested_bytes;
}
size_t pa_stream_readable_size(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
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 pa_memblockq_get_length(s->record_memblockq);
}
pa_operation * pa_stream_drain(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
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_PLAYBACK, PA_ERR_BADSTATE);
o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(s->context, PA_COMMAND_DRAIN_PLAYBACK_STREAM, &tag);
pa_tagstruct_putu32(t, s->channel);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, o);
return pa_operation_ref(o);
}
static void stream_get_latency_info_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_operation *o = userdata;
pa_latency_info i, *p = NULL;
struct timeval local, remote, now;
assert(pd);
assert(o);
assert(o->stream);
assert(o->context);
i.counter = *(uint64_t*)pa_hashmap_get(o->stream->counter_hashmap, (void*)(unsigned long)tag);
pa_xfree(pa_hashmap_remove(o->stream->counter_hashmap, (void*)(unsigned long)tag));
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(o->context, command, t) < 0)
goto finish;
} else if (pa_tagstruct_get_usec(t, &i.buffer_usec) < 0 ||
pa_tagstruct_get_usec(t, &i.sink_usec) < 0 ||
pa_tagstruct_get_usec(t, &i.source_usec) < 0 ||
pa_tagstruct_get_boolean(t, &i.playing) < 0 ||
pa_tagstruct_getu32(t, &i.queue_length) < 0 ||
pa_tagstruct_get_timeval(t, &local) < 0 ||
pa_tagstruct_get_timeval(t, &remote) < 0 ||
pa_tagstruct_gets64(t, &i.write_index) < 0 ||
pa_tagstruct_gets64(t, &i.read_index) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
} else {
pa_gettimeofday(&now);
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 {
/* clocks are not synchronized, let's estimate latency then */
i.transport_usec = pa_timeval_diff(&now, &local)/2;
i.synchronized_clocks = 0;
i.timestamp = local;
pa_timeval_add(&i.timestamp, i.transport_usec);
}
if (o->stream->interpolate) {
/* pa_log("new interpol data"); */
o->stream->ipol_timestamp = i.timestamp;
o->stream->ipol_usec = pa_stream_get_time(o->stream, &i);
o->stream->ipol_requested = 0;
}
p = &i;
}
if (o->callback) {
pa_stream_get_latency_info_cb_t cb = (pa_stream_get_latency_info_cb_t) o->callback;
cb(o->stream, p, o->userdata);
}
finish:
pa_operation_done(o);
pa_operation_unref(o);
}
pa_operation* pa_stream_get_latency_info(pa_stream *s, pa_stream_get_latency_info_cb_t cb, void *userdata) {
uint32_t tag;
pa_operation *o;
pa_tagstruct *t;
struct timeval now;
uint64_t *counter;
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);
PA_CHECK_VALIDITY_RETURN_NULL(s->context, pa_hashmap_size(s->counter_hashmap) < COUNTER_HASHMAP_MAXSIZE, 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_gettimeofday(&now);
pa_tagstruct_put_timeval(t, &now);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_latency_info_callback, o);
counter = pa_xmalloc(sizeof(uint64_t));
*counter = s->counter;
pa_hashmap_put(s->counter_hashmap, (void*)(unsigned long)tag, counter);
return pa_operation_ref(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);
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;
} else if (!pa_tagstruct_eof(t)) {
pa_context_fail(s->context, PA_ERR_PROTOCOL);
goto finish;
}
pa_stream_set_state(s, PA_STREAM_TERMINATED);
finish:
pa_stream_unref(s);
}
int pa_stream_disconnect(pa_stream *s) {
pa_tagstruct *t;
uint32_t tag;
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY(s->context, s->channel_valid, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(s->context, s->context->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
pa_stream_ref(s);
t = pa_tagstruct_command(
s->context,
s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_DELETE_PLAYBACK_STREAM :
(s->direction == PA_STREAM_RECORD ? PA_COMMAND_DELETE_RECORD_STREAM : PA_COMMAND_DELETE_UPLOAD_STREAM),
&tag);
pa_tagstruct_putu32(t, s->channel);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_disconnect_callback, s);
pa_stream_unref(s);
return 0;
}
void pa_stream_set_read_callback(pa_stream *s, pa_stream_request_cb_t cb, void *userdata) {
assert(s);
assert(s->ref >= 1);
s->read_callback = cb;
s->read_userdata = userdata;
}
void pa_stream_set_write_callback(pa_stream *s, pa_stream_request_cb_t cb, void *userdata) {
assert(s);
assert(s->ref >= 1);
s->write_callback = cb;
s->write_userdata = userdata;
}
void pa_stream_set_state_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
assert(s);
assert(s->ref >= 1);
s->state_callback = cb;
s->state_userdata = userdata;
}
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_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->context);
assert(o->ref >= 1);
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(o->context, command, t) < 0)
goto finish;
success = 0;
} else if (!pa_tagstruct_eof(t)) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
}
if (o->callback) {
pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
cb(o->stream, success, o->userdata);
}
finish:
pa_operation_done(o);
pa_operation_unref(o);
}
pa_operation* pa_stream_cork(pa_stream *s, int b, pa_stream_success_cb_t cb, void *userdata) {
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);
if (s->interpolate) {
if (!s->corked && b)
/* Pausing */
s->ipol_usec = pa_stream_get_interpolated_time(s);
else if (s->corked && !b)
/* Unpausing */
pa_gettimeofday(&s->ipol_timestamp);
}
s->corked = b;
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_CORK_PLAYBACK_STREAM : PA_COMMAND_CORK_RECORD_STREAM,
&tag);
pa_tagstruct_putu32(t, s->channel);
pa_tagstruct_put_boolean(t, !!b);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, o);
pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL));
return pa_operation_ref(o);
}
static pa_operation* stream_send_simple_command(pa_stream *s, uint32_t command, pa_stream_success_cb_t cb, void *userdata) {
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_tagstruct_putu32(t, s->channel);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, o);
return pa_operation_ref(o);
}
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)))
pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL));
return o;
}
pa_operation* pa_stream_prebuf(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);
if ((o = stream_send_simple_command(s, PA_COMMAND_PREBUF_PLAYBACK_STREAM, cb, userdata)))
pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL));
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);
if ((o = stream_send_simple_command(s, PA_COMMAND_TRIGGER_PLAYBACK_STREAM, cb, userdata)))
pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL));
return o;
}
pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_success_cb_t cb, void *userdata) {
pa_operation *o;
pa_tagstruct *t;
uint32_t tag;
assert(s);
assert(s->ref >= 1);
assert(name);
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);
o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(
s->context,
s->direction == PA_STREAM_RECORD ? PA_COMMAND_SET_RECORD_STREAM_NAME : PA_COMMAND_SET_PLAYBACK_STREAM_NAME,
&tag);
pa_tagstruct_putu32(t, s->channel);
pa_tagstruct_puts(t, name);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, o);
return pa_operation_ref(o);
}
uint64_t pa_stream_get_counter(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (uint64_t) -1);
return s->counter;
}
pa_usec_t pa_stream_get_time(pa_stream *s, const pa_latency_info *i) {
pa_usec_t usec;
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (pa_usec_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE, (pa_usec_t) -1);
usec = pa_bytes_to_usec(i->counter, &s->sample_spec);
if (i) {
if (s->direction == PA_STREAM_PLAYBACK) {
pa_usec_t latency = i->transport_usec + i->buffer_usec + i->sink_usec;
if (usec < latency)
usec = 0;
else
usec -= latency;
} else if (s->direction == PA_STREAM_RECORD) {
usec += i->source_usec + i->buffer_usec + i->transport_usec;
if (usec > i->sink_usec)
usec -= i->sink_usec;
else
usec = 0;
}
}
if (usec < s->previous_time)
usec = s->previous_time;
s->previous_time = usec;
return usec;
}
static pa_usec_t time_counter_diff(pa_stream *s, pa_usec_t t, pa_usec_t c, int *negative) {
assert(s);
assert(s->ref >= 1);
if (negative)
*negative = 0;
if (c < t) {
if (s->direction == PA_STREAM_RECORD) {
if (negative)
*negative = 1;
return t-c;
} else
return 0;
} else
return c-t;
}
pa_usec_t pa_stream_get_latency(pa_stream *s, const pa_latency_info *i, int *negative) {
pa_usec_t t, c;
assert(s);
assert(s->ref >= 1);
assert(i);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (pa_usec_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE, (pa_usec_t) -1);
t = pa_stream_get_time(s, i);
c = pa_bytes_to_usec(s->counter, &s->sample_spec);
return time_counter_diff(s, t, c, negative);
}
const pa_sample_spec* pa_stream_get_sample_spec(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
return &s->sample_spec;
}
const pa_channel_map* pa_stream_get_channel_map(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
return &s->channel_map;
}
void pa_stream_trash_ipol(pa_stream *s) {
assert(s);
assert(s->ref >= 1);
if (!s->interpolate)
return;
memset(&s->ipol_timestamp, 0, sizeof(s->ipol_timestamp));
s->ipol_usec = 0;
}
pa_usec_t pa_stream_get_interpolated_time(pa_stream *s) {
pa_usec_t usec;
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (pa_usec_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE, (pa_usec_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->interpolate, PA_ERR_BADSTATE, (pa_usec_t) -1);
if (s->corked)
usec = s->ipol_usec;
else {
if (s->ipol_timestamp.tv_sec == 0)
usec = 0;
else
usec = s->ipol_usec + pa_timeval_age(&s->ipol_timestamp);
}
if (usec < s->previous_ipol_time)
usec = s->previous_ipol_time;
s->previous_ipol_time = usec;
return usec;
}
pa_usec_t pa_stream_get_interpolated_latency(pa_stream *s, int *negative) {
pa_usec_t t, c;
assert(s);
assert(s->ref >= 1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (pa_usec_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE, (pa_usec_t) -1);
PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->interpolate, PA_ERR_BADSTATE, (pa_usec_t) -1);
t = pa_stream_get_interpolated_time(s);
c = pa_bytes_to_usec(s->counter, &s->sample_spec);
return time_counter_diff(s, t, c, negative);
}
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