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-rw-r--r--spa/plugins/bluez5/sco-source.c1592
1 files changed, 1592 insertions, 0 deletions
diff --git a/spa/plugins/bluez5/sco-source.c b/spa/plugins/bluez5/sco-source.c
new file mode 100644
index 0000000..6f5fe08
--- /dev/null
+++ b/spa/plugins/bluez5/sco-source.c
@@ -0,0 +1,1592 @@
+/* Spa SCO Source
+ *
+ * Copyright © 2019 Collabora Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/loop.h>
+#include <spa/support/log.h>
+#include <spa/support/system.h>
+#include <spa/utils/result.h>
+#include <spa/utils/list.h>
+#include <spa/utils/keys.h>
+#include <spa/utils/names.h>
+#include <spa/utils/string.h>
+#include <spa/monitor/device.h>
+
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/node/keys.h>
+#include <spa/param/param.h>
+#include <spa/param/latency-utils.h>
+#include <spa/param/audio/format.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/pod/filter.h>
+
+#include <sbc/sbc.h>
+
+#include "defs.h"
+
+static struct spa_log_topic log_topic = SPA_LOG_TOPIC(0, "spa.bluez5.source.sco");
+#undef SPA_LOG_TOPIC_DEFAULT
+#define SPA_LOG_TOPIC_DEFAULT &log_topic
+
+#include "decode-buffer.h"
+
+#define DEFAULT_CLOCK_NAME "clock.system.monotonic"
+
+struct props {
+ char clock_name[64];
+};
+
+#define MAX_BUFFERS 32
+
+struct buffer {
+ uint32_t id;
+ unsigned int outstanding:1;
+ struct spa_buffer *buf;
+ struct spa_meta_header *h;
+ struct spa_list link;
+};
+
+struct port {
+ struct spa_audio_info current_format;
+ int frame_size;
+ unsigned int have_format:1;
+
+ uint64_t info_all;
+ struct spa_port_info info;
+ struct spa_io_buffers *io;
+ struct spa_io_rate_match *rate_match;
+ struct spa_latency_info latency;
+#define IDX_EnumFormat 0
+#define IDX_Meta 1
+#define IDX_IO 2
+#define IDX_Format 3
+#define IDX_Buffers 4
+#define IDX_Latency 5
+#define N_PORT_PARAMS 6
+ struct spa_param_info params[N_PORT_PARAMS];
+
+ struct buffer buffers[MAX_BUFFERS];
+ uint32_t n_buffers;
+
+ struct spa_list free;
+ struct spa_list ready;
+
+ struct spa_bt_decode_buffer buffer;
+};
+
+struct impl {
+ struct spa_handle handle;
+ struct spa_node node;
+
+ struct spa_log *log;
+ struct spa_loop *data_loop;
+ struct spa_system *data_system;
+
+ struct spa_hook_list hooks;
+ struct spa_callbacks callbacks;
+
+ uint32_t quantum_limit;
+
+ uint64_t info_all;
+ struct spa_node_info info;
+#define IDX_PropInfo 0
+#define IDX_Props 1
+#define IDX_NODE_IO 2
+#define N_NODE_PARAMS 3
+ struct spa_param_info params[N_NODE_PARAMS];
+ struct props props;
+
+ struct spa_bt_transport *transport;
+ struct spa_hook transport_listener;
+
+ struct port port;
+
+ unsigned int started:1;
+ unsigned int following:1;
+ unsigned int matching:1;
+ unsigned int resampling:1;
+
+ struct spa_source timer_source;
+ int timerfd;
+
+ struct spa_io_clock *clock;
+ struct spa_io_position *position;
+
+ uint64_t current_time;
+ uint64_t next_time;
+
+ /* mSBC */
+ sbc_t msbc;
+ bool msbc_seq_initialized;
+ uint8_t msbc_seq;
+
+ /* mSBC frame parsing */
+ uint8_t msbc_buffer[MSBC_ENCODED_SIZE];
+ uint8_t msbc_buffer_pos;
+
+ struct timespec now;
+};
+
+#define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0)
+
+static void reset_props(struct props *props)
+{
+ strncpy(props->clock_name, DEFAULT_CLOCK_NAME, sizeof(props->clock_name));
+}
+
+static int impl_node_enum_params(void *object, int seq,
+ uint32_t id, uint32_t start, uint32_t num,
+ const struct spa_pod *filter)
+{
+ struct impl *this = object;
+ struct spa_pod *param;
+ struct spa_pod_builder b = { 0 };
+ uint8_t buffer[1024];
+ struct spa_result_node_params result;
+ uint32_t count = 0;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(num != 0, -EINVAL);
+
+ result.id = id;
+ result.next = start;
+ next:
+ result.index = result.next++;
+
+ spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+ switch (id) {
+ case SPA_PARAM_PropInfo:
+ {
+ switch (result.index) {
+ default:
+ return 0;
+ }
+ break;
+ }
+ case SPA_PARAM_Props:
+ {
+ switch (result.index) {
+ default:
+ return 0;
+ }
+ break;
+ }
+ default:
+ return -ENOENT;
+ }
+
+ if (spa_pod_filter(&b, &result.param, param, filter) < 0)
+ goto next;
+
+ spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
+
+ if (++count != num)
+ goto next;
+
+ return 0;
+}
+
+static int set_timeout(struct impl *this, uint64_t time)
+{
+ struct itimerspec ts;
+ ts.it_value.tv_sec = time / SPA_NSEC_PER_SEC;
+ ts.it_value.tv_nsec = time % SPA_NSEC_PER_SEC;
+ ts.it_interval.tv_sec = 0;
+ ts.it_interval.tv_nsec = 0;
+ return spa_system_timerfd_settime(this->data_system,
+ this->timerfd, SPA_FD_TIMER_ABSTIME, &ts, NULL);
+}
+
+static int set_timers(struct impl *this)
+{
+ struct timespec now;
+
+ spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now);
+ this->next_time = SPA_TIMESPEC_TO_NSEC(&now);
+
+ return set_timeout(this, this->following ? 0 : this->next_time);
+}
+
+static int do_reassign_follower(struct spa_loop *loop,
+ bool async,
+ uint32_t seq,
+ const void *data,
+ size_t size,
+ void *user_data)
+{
+ struct impl *this = user_data;
+ struct port *port = &this->port;
+
+ set_timers(this);
+ spa_bt_decode_buffer_recover(&port->buffer);
+ return 0;
+}
+
+static inline bool is_following(struct impl *this)
+{
+ return this->position && this->clock && this->position->clock.id != this->clock->id;
+}
+
+static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
+{
+ struct impl *this = object;
+ bool following;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ switch (id) {
+ case SPA_IO_Clock:
+ this->clock = data;
+ if (this->clock != NULL) {
+ spa_scnprintf(this->clock->name,
+ sizeof(this->clock->name),
+ "%s", this->props.clock_name);
+ }
+ break;
+ case SPA_IO_Position:
+ this->position = data;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ following = is_following(this);
+ if (this->started && following != this->following) {
+ spa_log_debug(this->log, "%p: reassign follower %d->%d", this, this->following, following);
+ this->following = following;
+ spa_loop_invoke(this->data_loop, do_reassign_follower, 0, NULL, 0, true, this);
+ }
+
+ return 0;
+}
+
+static void emit_node_info(struct impl *this, bool full);
+
+static int apply_props(struct impl *this, const struct spa_pod *param)
+{
+ struct props new_props = this->props;
+ int changed = 0;
+
+ if (param == NULL) {
+ reset_props(&new_props);
+ } else {
+ /* noop */
+ }
+
+ changed = (memcmp(&new_props, &this->props, sizeof(struct props)) != 0);
+ this->props = new_props;
+ return changed;
+}
+
+static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
+ const struct spa_pod *param)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ switch (id) {
+ case SPA_PARAM_Props:
+ {
+ if (apply_props(this, param) > 0) {
+ this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS;
+ this->params[IDX_Props].flags ^= SPA_PARAM_INFO_SERIAL;
+ emit_node_info(this, false);
+ }
+ break;
+ }
+ default:
+ return -ENOENT;
+ }
+
+ return 0;
+}
+
+static void reset_buffers(struct port *port)
+{
+ uint32_t i;
+
+ spa_list_init(&port->free);
+ spa_list_init(&port->ready);
+
+ for (i = 0; i < port->n_buffers; i++) {
+ struct buffer *b = &port->buffers[i];
+ spa_list_append(&port->free, &b->link);
+ b->outstanding = false;
+ }
+}
+
+static void recycle_buffer(struct impl *this, struct port *port, uint32_t buffer_id)
+{
+ struct buffer *b = &port->buffers[buffer_id];
+
+ if (b->outstanding) {
+ spa_log_trace(this->log, "%p: recycle buffer %u", this, buffer_id);
+ spa_list_append(&port->free, &b->link);
+ b->outstanding = false;
+ }
+}
+
+/* Append data to msbc buffer, syncing buffer start to frame headers */
+static void msbc_buffer_append_byte(struct impl *this, uint8_t byte)
+{
+ /* Parse mSBC frame header */
+ if (this->msbc_buffer_pos == 0) {
+ if (byte != 0x01) {
+ this->msbc_buffer_pos = 0;
+ return;
+ }
+ }
+ else if (this->msbc_buffer_pos == 1) {
+ if (!((byte & 0x0F) == 0x08 &&
+ ((byte >> 4) & 1) == ((byte >> 5) & 1) &&
+ ((byte >> 6) & 1) == ((byte >> 7) & 1))) {
+ this->msbc_buffer_pos = 0;
+ return;
+ }
+ }
+ else if (this->msbc_buffer_pos == 2) {
+ /* .. and beginning of MSBC frame: SYNCWORD + 2 nul bytes */
+ if (byte != 0xAD) {
+ this->msbc_buffer_pos = 0;
+ return;
+ }
+ }
+ else if (this->msbc_buffer_pos == 3) {
+ if (byte != 0x00) {
+ this->msbc_buffer_pos = 0;
+ return;
+ }
+ }
+ else if (this->msbc_buffer_pos == 4) {
+ if (byte != 0x00) {
+ this->msbc_buffer_pos = 0;
+ return;
+ }
+ }
+ else if (this->msbc_buffer_pos >= MSBC_ENCODED_SIZE) {
+ /* Packet completed. Reset. */
+ this->msbc_buffer_pos = 0;
+ msbc_buffer_append_byte(this, byte);
+ return;
+ }
+ this->msbc_buffer[this->msbc_buffer_pos] = byte;
+ ++this->msbc_buffer_pos;
+}
+
+/* Helper function for debugging */
+static SPA_UNUSED void hexdump_to_log(struct impl *this, uint8_t *data, size_t size)
+{
+ char buf[2048];
+ size_t i, col = 0, pos = 0;
+ buf[0] = '\0';
+ for (i = 0; i < size; ++i) {
+ int res;
+ res = spa_scnprintf(buf + pos, sizeof(buf) - pos, "%s%02x",
+ (col == 0) ? "\n\t" : " ", data[i]);
+ if (res < 0)
+ break;
+ pos += res;
+ col = (col + 1) % 16;
+ }
+ spa_log_trace(this->log, "hexdump (%d bytes):%s", (int)size, buf);
+}
+
+/* helper function to detect if a packet consists only of zeros */
+static bool is_zero_packet(uint8_t *data, int size)
+{
+ for (int i = 0; i < size; ++i) {
+ if (data[i] != 0) {
+ return false;
+ }
+ }
+ return true;
+}
+
+static uint32_t preprocess_and_decode_msbc_data(void *userdata, uint8_t *read_data, int size_read)
+{
+ struct impl *this = userdata;
+ struct port *port = &this->port;
+ uint32_t decoded = 0;
+ int i;
+
+ spa_log_trace(this->log, "handling mSBC data");
+
+ /*
+ * Check if the packet contains only zeros - if so ignore the packet.
+ * This is necessary, because some kernels insert bogus "all-zero" packets
+ * into the datastream.
+ * See https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/549
+ */
+ if (is_zero_packet(read_data, size_read))
+ return 0;
+
+ for (i = 0; i < size_read; ++i) {
+ void *buf;
+ uint32_t avail;
+ int seq, processed;
+ size_t written;
+
+ msbc_buffer_append_byte(this, read_data[i]);
+
+ if (this->msbc_buffer_pos != MSBC_ENCODED_SIZE)
+ continue;
+
+ /*
+ * Handle found mSBC packet
+ */
+
+ buf = spa_bt_decode_buffer_get_write(&port->buffer, &avail);
+
+ /* Check sequence number */
+ seq = ((this->msbc_buffer[1] >> 4) & 1) |
+ ((this->msbc_buffer[1] >> 6) & 2);
+
+ spa_log_trace(this->log, "mSBC packet seq=%u", seq);
+ if (!this->msbc_seq_initialized) {
+ this->msbc_seq_initialized = true;
+ this->msbc_seq = seq;
+ } else if (seq != this->msbc_seq) {
+ /* TODO: PLC (too late to insert data now) */
+ spa_log_info(this->log,
+ "missing mSBC packet: %u != %u", seq, this->msbc_seq);
+ this->msbc_seq = seq;
+ }
+
+ this->msbc_seq = (this->msbc_seq + 1) % 4;
+
+ if (avail < MSBC_DECODED_SIZE)
+ spa_log_warn(this->log, "Output buffer full, dropping msbc data");
+
+ /* decode frame */
+ processed = sbc_decode(
+ &this->msbc, this->msbc_buffer + 2, MSBC_ENCODED_SIZE - 3,
+ buf, avail, &written);
+
+ if (processed < 0) {
+ spa_log_warn(this->log, "sbc_decode failed: %d", processed);
+ /* TODO: manage errors */
+ continue;
+ }
+
+ spa_bt_decode_buffer_write_packet(&port->buffer, written);
+ decoded += written;
+ }
+
+ return decoded;
+}
+
+static int sco_source_cb(void *userdata, uint8_t *read_data, int size_read)
+{
+ struct impl *this = userdata;
+ struct port *port = &this->port;
+ uint32_t decoded;
+ uint64_t dt;
+
+ if (this->transport == NULL) {
+ spa_log_debug(this->log, "no transport, stop reading");
+ goto stop;
+ }
+
+ /* update the current pts */
+ dt = SPA_TIMESPEC_TO_NSEC(&this->now);
+ spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &this->now);
+ dt = SPA_TIMESPEC_TO_NSEC(&this->now) - dt;
+
+ /* handle data read from socket */
+#if 0
+ hexdump_to_log(this, read_data, size_read);
+#endif
+
+ if (this->transport->codec == HFP_AUDIO_CODEC_MSBC) {
+ decoded = preprocess_and_decode_msbc_data(userdata, read_data, size_read);
+ } else {
+ uint32_t avail;
+ uint8_t *packet;
+
+ if (size_read != 48 && is_zero_packet(read_data, size_read)) {
+ /* Adapter is returning non-standard CVSD stream. For example
+ * Intel 8087:0029 at Firmware revision 0.0 build 191 week 21 2021
+ * on kernel 5.13.19 produces such data.
+ */
+ return 0;
+ }
+
+ if (size_read % port->frame_size != 0) {
+ /* Unaligned data: reception or adapter problem.
+ * Consider the whole packet lost and report.
+ */
+ spa_log_debug(this->log,
+ "received bad Bluetooth SCO CVSD packet");
+ return 0;
+ }
+
+ packet = spa_bt_decode_buffer_get_write(&port->buffer, &avail);
+ avail = SPA_MIN(avail, (uint32_t)size_read);
+ spa_memmove(packet, read_data, avail);
+ spa_bt_decode_buffer_write_packet(&port->buffer, avail);
+
+ decoded = avail;
+ }
+
+ spa_log_trace(this->log, "read socket data size:%d decoded frames:%d dt:%d dms",
+ size_read, decoded / port->frame_size,
+ (int)(dt / 100000));
+
+ return 0;
+
+stop:
+ return 1;
+}
+
+static int setup_matching(struct impl *this)
+{
+ struct port *port = &this->port;
+
+ if (this->position && port->rate_match) {
+ port->rate_match->rate = 1 / port->buffer.corr;
+
+ this->matching = this->following;
+ this->resampling = this->matching ||
+ (port->current_format.info.raw.rate != this->position->clock.rate.denom);
+ } else {
+ this->matching = false;
+ this->resampling = false;
+ }
+
+ if (port->rate_match)
+ SPA_FLAG_UPDATE(port->rate_match->flags, SPA_IO_RATE_MATCH_FLAG_ACTIVE, this->matching);
+
+ return 0;
+}
+
+static int produce_buffer(struct impl *this);
+
+static void sco_on_timeout(struct spa_source *source)
+{
+ struct impl *this = source->data;
+ struct port *port = &this->port;
+ uint64_t exp, duration;
+ uint32_t rate;
+ uint64_t prev_time, now_time;
+ int res;
+
+ if (this->transport == NULL)
+ return;
+
+ if (this->started) {
+ if ((res = spa_system_timerfd_read(this->data_system, this->timerfd, &exp)) < 0) {
+ if (res != -EAGAIN)
+ spa_log_warn(this->log, "error reading timerfd: %s",
+ spa_strerror(res));
+ return;
+ }
+ }
+
+ prev_time = this->current_time;
+ now_time = this->current_time = this->next_time;
+
+ spa_log_trace(this->log, "%p: timer %"PRIu64" %"PRIu64"", this,
+ now_time, now_time - prev_time);
+
+ if (SPA_LIKELY(this->position)) {
+ duration = this->position->clock.duration;
+ rate = this->position->clock.rate.denom;
+ } else {
+ duration = 1024;
+ rate = 48000;
+ }
+
+ setup_matching(this);
+
+ this->next_time = now_time + duration * SPA_NSEC_PER_SEC / port->buffer.corr / rate;
+
+ if (SPA_LIKELY(this->clock)) {
+ this->clock->nsec = now_time;
+ this->clock->position += duration;
+ this->clock->duration = duration;
+ this->clock->rate_diff = port->buffer.corr;
+ this->clock->next_nsec = this->next_time;
+ }
+
+ if (port->io) {
+ int status = produce_buffer(this);
+ spa_log_trace(this->log, "%p: io:%d status:%d", this, port->io->status, status);
+ }
+
+ spa_node_call_ready(&this->callbacks, SPA_STATUS_HAVE_DATA);
+
+ set_timeout(this, this->next_time);
+}
+
+static int do_add_source(struct spa_loop *loop,
+ bool async,
+ uint32_t seq,
+ const void *data,
+ size_t size,
+ void *user_data)
+{
+ struct impl *this = user_data;
+
+ spa_bt_sco_io_set_source_cb(this->transport->sco_io, sco_source_cb, this);
+
+ return 0;
+}
+
+static int do_start(struct impl *this)
+{
+ struct port *port = &this->port;
+ bool do_accept;
+ int res;
+
+ /* Don't do anything if the node has already started */
+ if (this->started)
+ return 0;
+
+ this->following = is_following(this);
+
+ spa_log_debug(this->log, "%p: start following:%d",
+ this, this->following);
+
+ /* Make sure the transport is valid */
+ spa_return_val_if_fail (this->transport != NULL, -EIO);
+
+ /* Do accept if Gateway; otherwise do connect for Head Unit */
+ do_accept = this->transport->profile & SPA_BT_PROFILE_HEADSET_AUDIO_GATEWAY;
+
+ /* acquire the socket fd (false -> connect | true -> accept) */
+ if ((res = spa_bt_transport_acquire(this->transport, do_accept)) < 0)
+ return res;
+
+ /* Reset the buffers and sample count */
+ reset_buffers(port);
+
+ spa_bt_decode_buffer_clear(&port->buffer);
+ if ((res = spa_bt_decode_buffer_init(&port->buffer, this->log,
+ port->frame_size, port->current_format.info.raw.rate,
+ this->quantum_limit, this->quantum_limit)) < 0)
+ return res;
+
+ /* Init mSBC if needed */
+ if (this->transport->codec == HFP_AUDIO_CODEC_MSBC) {
+ sbc_init_msbc(&this->msbc, 0);
+ /* Libsbc expects audio samples by default in host endianness, mSBC requires little endian */
+ this->msbc.endian = SBC_LE;
+ this->msbc_seq_initialized = false;
+
+ this->msbc_buffer_pos = 0;
+ }
+
+ /* Start socket i/o */
+ if ((res = spa_bt_transport_ensure_sco_io(this->transport, this->data_loop)) < 0)
+ goto fail;
+ spa_loop_invoke(this->data_loop, do_add_source, 0, NULL, 0, true, this);
+
+ /* Start timer */
+ this->timer_source.data = this;
+ this->timer_source.fd = this->timerfd;
+ this->timer_source.func = sco_on_timeout;
+ this->timer_source.mask = SPA_IO_IN;
+ this->timer_source.rmask = 0;
+ spa_loop_add_source(this->data_loop, &this->timer_source);
+
+ setup_matching(this);
+ set_timers(this);
+
+ /* Set the started flag */
+ this->started = true;
+
+ return 0;
+
+fail:
+ spa_bt_transport_release(this->transport);
+ return res;
+}
+
+static int do_remove_source(struct spa_loop *loop,
+ bool async,
+ uint32_t seq,
+ const void *data,
+ size_t size,
+ void *user_data)
+{
+ struct impl *this = user_data;
+ struct itimerspec ts;
+
+ if (this->transport && this->transport->sco_io)
+ spa_bt_sco_io_set_source_cb(this->transport->sco_io, NULL, NULL);
+
+ if (this->timer_source.loop)
+ spa_loop_remove_source(this->data_loop, &this->timer_source);
+ ts.it_value.tv_sec = 0;
+ ts.it_value.tv_nsec = 0;
+ ts.it_interval.tv_sec = 0;
+ ts.it_interval.tv_nsec = 0;
+ spa_system_timerfd_settime(this->data_system, this->timerfd, 0, &ts, NULL);
+
+ return 0;
+}
+
+static int do_stop(struct impl *this)
+{
+ struct port *port = &this->port;
+ int res = 0;
+
+ if (!this->started)
+ return 0;
+
+ spa_log_debug(this->log, "sco-source %p: stop", this);
+
+ spa_loop_invoke(this->data_loop, do_remove_source, 0, NULL, 0, true, this);
+
+ this->started = false;
+
+ if (this->transport) {
+ /* Release the transport; it is responsible for closing the fd */
+ res = spa_bt_transport_release(this->transport);
+ }
+
+ spa_bt_decode_buffer_clear(&port->buffer);
+
+ return res;
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+ struct impl *this = object;
+ struct port *port;
+ int res;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(command != NULL, -EINVAL);
+
+ port = &this->port;
+
+ switch (SPA_NODE_COMMAND_ID(command)) {
+ case SPA_NODE_COMMAND_Start:
+ if (!port->have_format)
+ return -EIO;
+ if (port->n_buffers == 0)
+ return -EIO;
+
+ if ((res = do_start(this)) < 0)
+ return res;
+ break;
+ case SPA_NODE_COMMAND_Pause:
+ case SPA_NODE_COMMAND_Suspend:
+ if ((res = do_stop(this)) < 0)
+ return res;
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+static void emit_node_info(struct impl *this, bool full)
+{
+ static const struct spa_dict_item hu_node_info_items[] = {
+ { SPA_KEY_DEVICE_API, "bluez5" },
+ { SPA_KEY_MEDIA_CLASS, "Audio/Source" },
+ { SPA_KEY_NODE_DRIVER, "true" },
+ };
+ const struct spa_dict_item ag_node_info_items[] = {
+ { SPA_KEY_DEVICE_API, "bluez5" },
+ { SPA_KEY_MEDIA_CLASS, "Stream/Output/Audio" },
+ { "media.name", ((this->transport && this->transport->device->name) ?
+ this->transport->device->name : "HSP/HFP") },
+ { SPA_KEY_MEDIA_ROLE, "Communication" },
+ };
+ bool is_ag = this->transport && (this->transport->profile & SPA_BT_PROFILE_HEADSET_AUDIO_GATEWAY);
+ uint64_t old = full ? this->info.change_mask : 0;
+
+ if (full)
+ this->info.change_mask = this->info_all;
+ if (this->info.change_mask) {
+ this->info.props = is_ag ?
+ &SPA_DICT_INIT_ARRAY(ag_node_info_items) :
+ &SPA_DICT_INIT_ARRAY(hu_node_info_items);
+ spa_node_emit_info(&this->hooks, &this->info);
+ this->info.change_mask = old;
+ }
+}
+
+static void emit_port_info(struct impl *this, struct port *port, bool full)
+{
+ uint64_t old = full ? port->info.change_mask : 0;
+ if (full)
+ port->info.change_mask = port->info_all;
+ if (port->info.change_mask) {
+ spa_node_emit_port_info(&this->hooks,
+ SPA_DIRECTION_OUTPUT, 0, &port->info);
+ port->info.change_mask = old;
+ }
+}
+
+static int
+impl_node_add_listener(void *object,
+ struct spa_hook *listener,
+ const struct spa_node_events *events,
+ void *data)
+{
+ struct impl *this = object;
+ struct spa_hook_list save;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
+
+ emit_node_info(this, true);
+ emit_port_info(this, &this->port, true);
+
+ spa_hook_list_join(&this->hooks, &save);
+
+ return 0;
+}
+
+static int
+impl_node_set_callbacks(void *object,
+ const struct spa_node_callbacks *callbacks,
+ void *data)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ this->callbacks = SPA_CALLBACKS_INIT(callbacks, data);
+
+ return 0;
+}
+
+static int impl_node_sync(void *object, int seq)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_node_emit_result(&this->hooks, seq, 0, 0, NULL);
+
+ return 0;
+}
+
+static int impl_node_add_port(void *object, enum spa_direction direction, uint32_t port_id,
+ const struct spa_dict *props)
+{
+ return -ENOTSUP;
+}
+
+static int impl_node_remove_port(void *object, enum spa_direction direction, uint32_t port_id)
+{
+ return -ENOTSUP;
+}
+
+static int
+impl_node_port_enum_params(void *object, int seq,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t id, uint32_t start, uint32_t num,
+ const struct spa_pod *filter)
+{
+
+ struct impl *this = object;
+ struct port *port;
+ struct spa_pod *param;
+ struct spa_pod_builder b = { 0 };
+ uint8_t buffer[1024];
+ struct spa_result_node_params result;
+ uint32_t count = 0;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(num != 0, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+ port = &this->port;
+
+ result.id = id;
+ result.next = start;
+ next:
+ result.index = result.next++;
+
+ spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+ switch (id) {
+ case SPA_PARAM_EnumFormat:
+ if (result.index > 0)
+ return 0;
+ if (this->transport == NULL)
+ return -EIO;
+
+ /* set the info structure */
+ struct spa_audio_info_raw info = { 0, };
+ info.format = SPA_AUDIO_FORMAT_S16_LE;
+ info.channels = 1;
+ info.position[0] = SPA_AUDIO_CHANNEL_MONO;
+
+ /* CVSD format has a rate of 8kHz
+ * MSBC format has a rate of 16kHz */
+ if (this->transport->codec == HFP_AUDIO_CODEC_MSBC)
+ info.rate = 16000;
+ else
+ info.rate = 8000;
+
+ /* build the param */
+ param = spa_format_audio_raw_build(&b, id, &info);
+ break;
+
+ case SPA_PARAM_Format:
+ if (!port->have_format)
+ return -EIO;
+ if (result.index > 0)
+ return 0;
+
+ param = spa_format_audio_raw_build(&b, id, &port->current_format.info.raw);
+ break;
+
+ case SPA_PARAM_Buffers:
+ if (!port->have_format)
+ return -EIO;
+ if (result.index > 0)
+ return 0;
+
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamBuffers, id,
+ SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
+ SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1),
+ SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int(
+ this->quantum_limit * port->frame_size,
+ 16 * port->frame_size,
+ INT32_MAX),
+ SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->frame_size));
+ break;
+
+ case SPA_PARAM_Meta:
+ switch (result.index) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamMeta, id,
+ SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
+ SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header)));
+ break;
+ default:
+ return 0;
+ }
+ break;
+
+ case SPA_PARAM_IO:
+ switch (result.index) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Buffers),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_buffers)));
+ break;
+ case 1:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_RateMatch),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_rate_match)));
+ break;
+ default:
+ return 0;
+ }
+ break;
+
+ case SPA_PARAM_Latency:
+ switch (result.index) {
+ case 0:
+ param = spa_latency_build(&b, id, &port->latency);
+ break;
+ default:
+ return 0;
+ }
+ break;
+
+ default:
+ return -ENOENT;
+ }
+
+ if (spa_pod_filter(&b, &result.param, param, filter) < 0)
+ goto next;
+
+ spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
+
+ if (++count != num)
+ goto next;
+
+ return 0;
+}
+
+static int clear_buffers(struct impl *this, struct port *port)
+{
+ do_stop(this);
+ if (port->n_buffers > 0) {
+ spa_list_init(&port->free);
+ spa_list_init(&port->ready);
+ port->n_buffers = 0;
+ }
+ return 0;
+}
+
+static int port_set_format(struct impl *this, struct port *port,
+ uint32_t flags,
+ const struct spa_pod *format)
+{
+ int err;
+
+ if (format == NULL) {
+ spa_log_debug(this->log, "clear format");
+ clear_buffers(this, port);
+ port->have_format = false;
+ } else {
+ struct spa_audio_info info = { 0 };
+
+ if ((err = spa_format_parse(format, &info.media_type, &info.media_subtype)) < 0)
+ return err;
+
+ if (info.media_type != SPA_MEDIA_TYPE_audio ||
+ info.media_subtype != SPA_MEDIA_SUBTYPE_raw)
+ return -EINVAL;
+
+ if (spa_format_audio_raw_parse(format, &info.info.raw) < 0)
+ return -EINVAL;
+
+ if (info.info.raw.format != SPA_AUDIO_FORMAT_S16_LE ||
+ info.info.raw.rate == 0 ||
+ info.info.raw.channels != 1)
+ return -EINVAL;
+
+ port->frame_size = info.info.raw.channels * 2;
+ port->current_format = info;
+ port->have_format = true;
+ }
+
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+ if (port->have_format) {
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_FLAGS;
+ port->info.flags = SPA_PORT_FLAG_LIVE;
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_RATE;
+ port->info.rate = SPA_FRACTION(1, port->current_format.info.raw.rate);
+ port->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE);
+ port->params[IDX_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ);
+ port->params[IDX_Latency].flags ^= SPA_PARAM_INFO_SERIAL;
+ } else {
+ port->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[IDX_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ }
+ emit_port_info(this, port, false);
+
+ return 0;
+}
+
+static int
+impl_node_port_set_param(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t id, uint32_t flags,
+ const struct spa_pod *param)
+{
+ struct impl *this = object;
+ struct port *port;
+ int res;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(node, direction, port_id), -EINVAL);
+ port = &this->port;
+
+ switch (id) {
+ case SPA_PARAM_Format:
+ res = port_set_format(this, port, flags, param);
+ break;
+ case SPA_PARAM_Latency:
+ res = 0;
+ break;
+ default:
+ res = -ENOENT;
+ break;
+ }
+ return res;
+}
+
+static int
+impl_node_port_use_buffers(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t flags,
+ struct spa_buffer **buffers, uint32_t n_buffers)
+{
+ struct impl *this = object;
+ struct port *port;
+ uint32_t i;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+ port = &this->port;
+
+ spa_log_debug(this->log, "use buffers %d", n_buffers);
+
+ clear_buffers(this, port);
+
+ if (n_buffers > 0 && !port->have_format)
+ return -EIO;
+ if (n_buffers > MAX_BUFFERS)
+ return -ENOSPC;
+
+ for (i = 0; i < n_buffers; i++) {
+ struct buffer *b = &port->buffers[i];
+ struct spa_data *d = buffers[i]->datas;
+
+ b->buf = buffers[i];
+ b->id = i;
+
+ b->h = spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h));
+
+ if (d[0].data == NULL) {
+ spa_log_error(this->log, "%p: need mapped memory", this);
+ return -EINVAL;
+ }
+ spa_list_append(&port->free, &b->link);
+ b->outstanding = false;
+ }
+ port->n_buffers = n_buffers;
+
+ return 0;
+}
+
+static int
+impl_node_port_set_io(void *object,
+ enum spa_direction direction,
+ uint32_t port_id,
+ uint32_t id,
+ void *data, size_t size)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+ port = &this->port;
+
+ switch (id) {
+ case SPA_IO_Buffers:
+ port->io = data;
+ break;
+ case SPA_IO_RateMatch:
+ port->rate_match = data;
+ break;
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+static int impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_return_val_if_fail(port_id == 0, -EINVAL);
+ port = &this->port;
+
+ if (port->n_buffers == 0)
+ return -EIO;
+
+ if (buffer_id >= port->n_buffers)
+ return -EINVAL;
+
+ recycle_buffer(this, port, buffer_id);
+
+ return 0;
+}
+
+static uint32_t get_samples(struct impl *this, uint32_t *duration)
+{
+ struct port *port = &this->port;
+ uint32_t samples;
+
+ if (SPA_LIKELY(port->rate_match) && this->resampling) {
+ samples = port->rate_match->size;
+ } else {
+ if (SPA_LIKELY(this->position))
+ samples = this->position->clock.duration * port->current_format.info.raw.rate
+ / this->position->clock.rate.denom;
+ else
+ samples = 1024;
+ }
+
+ if (SPA_LIKELY(this->position))
+ *duration = this->position->clock.duration * port->current_format.info.raw.rate
+ / this->position->clock.rate.denom;
+ else if (SPA_LIKELY(this->clock))
+ *duration = this->clock->duration * port->current_format.info.raw.rate
+ / this->clock->rate.denom;
+ else
+ *duration = 1024 * port->current_format.info.raw.rate / 48000;
+
+ return samples;
+}
+
+static void process_buffering(struct impl *this)
+{
+ struct port *port = &this->port;
+ uint32_t duration;
+ const uint32_t samples = get_samples(this, &duration);
+ void *buf;
+ uint32_t avail;
+
+ spa_bt_decode_buffer_process(&port->buffer, samples, duration);
+
+ setup_matching(this);
+
+ buf = spa_bt_decode_buffer_get_read(&port->buffer, &avail);
+
+ /* copy data to buffers */
+ if (!spa_list_is_empty(&port->free) && avail > 0) {
+ struct buffer *buffer;
+ struct spa_data *datas;
+ uint32_t data_size;
+
+ data_size = samples * port->frame_size;
+
+ avail = SPA_MIN(avail, data_size);
+
+ spa_bt_decode_buffer_read(&port->buffer, avail);
+
+ buffer = spa_list_first(&port->free, struct buffer, link);
+ spa_list_remove(&buffer->link);
+
+ spa_log_trace(this->log, "dequeue %d", buffer->id);
+
+ datas = buffer->buf->datas;
+
+ spa_assert(datas[0].maxsize >= data_size);
+
+ datas[0].chunk->offset = 0;
+ datas[0].chunk->size = avail;
+ datas[0].chunk->stride = port->frame_size;
+ memcpy(datas[0].data, buf, avail);
+
+ /* ready buffer if full */
+ spa_log_trace(this->log, "queue %d frames:%d", buffer->id, (int)avail / port->frame_size);
+ spa_list_append(&port->ready, &buffer->link);
+ }
+}
+
+static int produce_buffer(struct impl *this)
+{
+ struct buffer *buffer;
+ struct port *port = &this->port;
+ struct spa_io_buffers *io = port->io;
+
+ if (io == NULL)
+ return -EIO;
+
+ /* Return if we already have a buffer */
+ if (io->status == SPA_STATUS_HAVE_DATA)
+ return SPA_STATUS_HAVE_DATA;
+
+ /* Recycle */
+ if (io->buffer_id < port->n_buffers) {
+ recycle_buffer(this, port, io->buffer_id);
+ io->buffer_id = SPA_ID_INVALID;
+ }
+
+ /* Handle buffering */
+ process_buffering(this);
+
+ /* Return if there are no buffers ready to be processed */
+ if (spa_list_is_empty(&port->ready))
+ return SPA_STATUS_OK;
+
+ /* Get the new buffer from the ready list */
+ buffer = spa_list_first(&port->ready, struct buffer, link);
+ spa_list_remove(&buffer->link);
+ buffer->outstanding = true;
+
+ /* Set the new buffer in IO */
+ io->buffer_id = buffer->id;
+ io->status = SPA_STATUS_HAVE_DATA;
+
+ /* Notify we have a buffer ready to be processed */
+ return SPA_STATUS_HAVE_DATA;
+}
+
+static int impl_node_process(void *object)
+{
+ struct impl *this = object;
+ struct port *port;
+ struct spa_io_buffers *io;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ port = &this->port;
+ if ((io = port->io) == NULL)
+ return -EIO;
+
+ /* Return if we already have a buffer */
+ if (io->status == SPA_STATUS_HAVE_DATA)
+ return SPA_STATUS_HAVE_DATA;
+
+ /* Recycle */
+ if (io->buffer_id < port->n_buffers) {
+ recycle_buffer(this, port, io->buffer_id);
+ io->buffer_id = SPA_ID_INVALID;
+ }
+
+ /* Follower produces buffers here, driver in timeout */
+ if (this->following)
+ return produce_buffer(this);
+ else
+ return SPA_STATUS_OK;
+}
+
+static const struct spa_node_methods impl_node = {
+ SPA_VERSION_NODE_METHODS,
+ .add_listener = impl_node_add_listener,
+ .set_callbacks = impl_node_set_callbacks,
+ .sync = impl_node_sync,
+ .enum_params = impl_node_enum_params,
+ .set_param = impl_node_set_param,
+ .set_io = impl_node_set_io,
+ .send_command = impl_node_send_command,
+ .add_port = impl_node_add_port,
+ .remove_port = impl_node_remove_port,
+ .port_enum_params = impl_node_port_enum_params,
+ .port_set_param = impl_node_port_set_param,
+ .port_use_buffers = impl_node_port_use_buffers,
+ .port_set_io = impl_node_port_set_io,
+ .port_reuse_buffer = impl_node_port_reuse_buffer,
+ .process = impl_node_process,
+};
+
+static int do_transport_destroy(struct spa_loop *loop,
+ bool async,
+ uint32_t seq,
+ const void *data,
+ size_t size,
+ void *user_data)
+{
+ struct impl *this = user_data;
+ this->transport = NULL;
+ return 0;
+}
+
+static void transport_destroy(void *data)
+{
+ struct impl *this = data;
+ spa_log_debug(this->log, "transport %p destroy", this->transport);
+ spa_loop_invoke(this->data_loop, do_transport_destroy, 0, NULL, 0, true, this);
+}
+
+static const struct spa_bt_transport_events transport_events = {
+ SPA_VERSION_BT_TRANSPORT_EVENTS,
+ .destroy = transport_destroy,
+};
+
+static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
+{
+ struct impl *this;
+
+ spa_return_val_if_fail(handle != NULL, -EINVAL);
+ spa_return_val_if_fail(interface != NULL, -EINVAL);
+
+ this = (struct impl *) handle;
+
+ if (spa_streq(type, SPA_TYPE_INTERFACE_Node))
+ *interface = &this->node;
+ else
+ return -ENOENT;
+
+ return 0;
+}
+
+static int impl_clear(struct spa_handle *handle)
+{
+ struct impl *this = (struct impl *) handle;
+
+ do_stop(this);
+ if (this->transport)
+ spa_hook_remove(&this->transport_listener);
+ spa_system_close(this->data_system, this->timerfd);
+ spa_bt_decode_buffer_clear(&this->port.buffer);
+ return 0;
+}
+
+static size_t
+impl_get_size(const struct spa_handle_factory *factory,
+ const struct spa_dict *params)
+{
+ return sizeof(struct impl);
+}
+
+static int
+impl_init(const struct spa_handle_factory *factory,
+ struct spa_handle *handle,
+ const struct spa_dict *info,
+ const struct spa_support *support,
+ uint32_t n_support)
+{
+ struct impl *this;
+ struct port *port;
+ const char *str;
+
+ spa_return_val_if_fail(factory != NULL, -EINVAL);
+ spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+ handle->get_interface = impl_get_interface;
+ handle->clear = impl_clear;
+
+ this = (struct impl *) handle;
+
+ this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
+ this->data_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataLoop);
+ this->data_system = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataSystem);
+
+ spa_log_topic_init(this->log, &log_topic);
+
+ if (this->data_loop == NULL) {
+ spa_log_error(this->log, "a data loop is needed");
+ return -EINVAL;
+ }
+ if (this->data_system == NULL) {
+ spa_log_error(this->log, "a data system is needed");
+ return -EINVAL;
+ }
+
+ this->node.iface = SPA_INTERFACE_INIT(
+ SPA_TYPE_INTERFACE_Node,
+ SPA_VERSION_NODE,
+ &impl_node, this);
+ spa_hook_list_init(&this->hooks);
+
+ reset_props(&this->props);
+
+ /* set the node info */
+ this->info_all = SPA_NODE_CHANGE_MASK_FLAGS |
+ SPA_NODE_CHANGE_MASK_PROPS |
+ SPA_NODE_CHANGE_MASK_PARAMS;
+ this->info = SPA_NODE_INFO_INIT();
+ this->info.flags = SPA_NODE_FLAG_RT;
+ this->params[IDX_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ);
+ this->params[IDX_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE);
+ this->params[IDX_NODE_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ this->info.params = this->params;
+ this->info.n_params = N_NODE_PARAMS;
+
+ /* set the port info */
+ port = &this->port;
+ port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+ SPA_PORT_CHANGE_MASK_PARAMS;
+ port->info = SPA_PORT_INFO_INIT();
+ port->info.change_mask = SPA_PORT_CHANGE_MASK_FLAGS;
+ port->info.flags = SPA_PORT_FLAG_LIVE |
+ SPA_PORT_FLAG_TERMINAL;
+ port->params[IDX_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+ port->params[IDX_Meta] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
+ port->params[IDX_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ port->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[IDX_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ port->params[IDX_Latency] = SPA_PARAM_INFO(SPA_PARAM_Latency, SPA_PARAM_INFO_READWRITE);
+ port->info.params = port->params;
+ port->info.n_params = N_PORT_PARAMS;
+
+ port->latency = SPA_LATENCY_INFO(SPA_DIRECTION_OUTPUT);
+ port->latency.min_quantum = 1.0f;
+ port->latency.max_quantum = 1.0f;
+
+ /* Init the buffer lists */
+ spa_list_init(&port->ready);
+ spa_list_init(&port->free);
+
+ this->quantum_limit = 8192;
+ if (info && (str = spa_dict_lookup(info, "clock.quantum-limit")))
+ spa_atou32(str, &this->quantum_limit, 0);
+
+ if (info && (str = spa_dict_lookup(info, SPA_KEY_API_BLUEZ5_TRANSPORT)))
+ sscanf(str, "pointer:%p", &this->transport);
+
+ if (this->transport == NULL) {
+ spa_log_error(this->log, "a transport is needed");
+ return -EINVAL;
+ }
+ spa_bt_transport_add_listener(this->transport,
+ &this->transport_listener, &transport_events, this);
+
+ this->timerfd = spa_system_timerfd_create(this->data_system,
+ CLOCK_MONOTONIC, SPA_FD_CLOEXEC | SPA_FD_NONBLOCK);
+
+ return 0;
+}
+
+static const struct spa_interface_info impl_interfaces[] = {
+ {SPA_TYPE_INTERFACE_Node,},
+};
+
+static int
+impl_enum_interface_info(const struct spa_handle_factory *factory,
+ const struct spa_interface_info **info, uint32_t *index)
+{
+ spa_return_val_if_fail(factory != NULL, -EINVAL);
+ spa_return_val_if_fail(info != NULL, -EINVAL);
+ spa_return_val_if_fail(index != NULL, -EINVAL);
+
+ switch (*index) {
+ case 0:
+ *info = &impl_interfaces[*index];
+ break;
+ default:
+ return 0;
+ }
+ (*index)++;
+ return 1;
+}
+
+static const struct spa_dict_item info_items[] = {
+ { SPA_KEY_FACTORY_AUTHOR, "Collabora Ltd. <contact@collabora.com>" },
+ { SPA_KEY_FACTORY_DESCRIPTION, "Capture bluetooth audio with hsp/hfp" },
+ { SPA_KEY_FACTORY_USAGE, SPA_KEY_API_BLUEZ5_TRANSPORT"=<transport>" },
+};
+
+static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items);
+
+const struct spa_handle_factory spa_sco_source_factory = {
+ SPA_VERSION_HANDLE_FACTORY,
+ SPA_NAME_API_BLUEZ5_SCO_SOURCE,
+ &info,
+ impl_get_size,
+ impl_init,
+ impl_enum_interface_info,
+};