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/* Copyright 2015 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <syslog.h>
#include "cras_rstream.h"
#include "cras_tm.h"
#include "cras_types.h"
#include "stream_list.h"
#include "utlist.h"
/*
* If the time difference of two streams is short than 10s, they may be the RTC
* streams.
*/
static const struct timespec RTC_STREAM_THRESHOLD = { 10, 0 };
struct stream_list {
struct cras_rstream *streams;
struct cras_rstream *streams_to_delete;
stream_callback *stream_added_cb;
stream_callback *stream_removed_cb;
stream_create_func *stream_create_cb;
stream_destroy_func *stream_destroy_cb;
struct cras_tm *timer_manager;
struct cras_timer *drain_timer;
};
static void delete_streams(struct cras_timer *timer, void *data)
{
struct cras_rstream *to_delete;
struct stream_list *list = (struct stream_list *)data;
int max_drain_delay = 0;
DL_FOREACH (list->streams_to_delete, to_delete) {
int drain_delay;
drain_delay = list->stream_removed_cb(to_delete);
if (drain_delay) {
max_drain_delay = MAX(max_drain_delay, drain_delay);
continue;
}
DL_DELETE(list->streams_to_delete, to_delete);
list->stream_destroy_cb(to_delete);
}
list->drain_timer = NULL;
if (max_drain_delay)
list->drain_timer =
cras_tm_create_timer(list->timer_manager,
MAX(max_drain_delay, 10),
delete_streams, list);
}
/*
* Exported Interface
*/
struct stream_list *stream_list_create(stream_callback *add_cb,
stream_callback *rm_cb,
stream_create_func *create_cb,
stream_destroy_func *destroy_cb,
struct cras_tm *timer_manager)
{
struct stream_list *list = calloc(1, sizeof(struct stream_list));
list->stream_added_cb = add_cb;
list->stream_removed_cb = rm_cb;
list->stream_create_cb = create_cb;
list->stream_destroy_cb = destroy_cb;
list->timer_manager = timer_manager;
return list;
}
void stream_list_destroy(struct stream_list *list)
{
free(list);
}
struct cras_rstream *stream_list_get(struct stream_list *list)
{
return list->streams;
}
int stream_list_add(struct stream_list *list,
struct cras_rstream_config *stream_config,
struct cras_rstream **stream)
{
int rc;
struct cras_rstream *next_stream;
rc = list->stream_create_cb(stream_config, stream);
if (rc)
return rc;
/* Keep stream list in descending order by channel count. */
DL_FOREACH (list->streams, next_stream) {
if ((*stream)->format.num_channels >=
next_stream->format.num_channels)
break;
}
DL_INSERT(list->streams, next_stream, *stream);
rc = list->stream_added_cb(*stream);
if (rc) {
DL_DELETE(list->streams, *stream);
list->stream_destroy_cb(*stream);
}
return rc;
}
int stream_list_rm(struct stream_list *list, cras_stream_id_t id)
{
struct cras_rstream *to_remove;
DL_SEARCH_SCALAR(list->streams, to_remove, stream_id, id);
if (!to_remove)
return -EINVAL;
DL_DELETE(list->streams, to_remove);
DL_APPEND(list->streams_to_delete, to_remove);
if (list->drain_timer) {
cras_tm_cancel_timer(list->timer_manager, list->drain_timer);
list->drain_timer = NULL;
}
delete_streams(NULL, list);
return 0;
}
int stream_list_rm_all_client_streams(struct stream_list *list,
struct cras_rclient *rclient)
{
struct cras_rstream *to_remove;
int rc = 0;
DL_FOREACH (list->streams, to_remove) {
if (to_remove->client == rclient) {
DL_DELETE(list->streams, to_remove);
DL_APPEND(list->streams_to_delete, to_remove);
}
}
if (list->drain_timer) {
cras_tm_cancel_timer(list->timer_manager, list->drain_timer);
list->drain_timer = NULL;
}
delete_streams(NULL, list);
return rc;
}
bool stream_list_has_pinned_stream(struct stream_list *list,
unsigned int dev_idx)
{
struct cras_rstream *rstream;
DL_FOREACH (list->streams, rstream) {
if (!rstream->is_pinned)
continue;
if (rstream->pinned_dev_idx == dev_idx)
return true;
}
return false;
}
void detect_rtc_stream_pair(struct stream_list *list,
struct cras_rstream *stream)
{
struct cras_rstream *next_stream;
if (stream->cb_threshold != 480)
return;
if (stream->client_type != CRAS_CLIENT_TYPE_CHROME &&
stream->client_type != CRAS_CLIENT_TYPE_LACROS)
return;
DL_FOREACH (list->streams, next_stream) {
if (next_stream->cb_threshold == 480 &&
next_stream->direction != stream->direction &&
next_stream->client_type == stream->client_type &&
timespec_diff_shorter_than(&stream->start_ts,
&next_stream->start_ts,
&RTC_STREAM_THRESHOLD)) {
stream->stream_type =
CRAS_STREAM_TYPE_VOICE_COMMUNICATION;
next_stream->stream_type =
CRAS_STREAM_TYPE_VOICE_COMMUNICATION;
return;
}
}
}
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