diff options
Diffstat (limited to '')
-rw-r--r-- | spa/plugins/bluez5/sco-sink.c | 1517 |
1 files changed, 1517 insertions, 0 deletions
diff --git a/spa/plugins/bluez5/sco-sink.c b/spa/plugins/bluez5/sco-sink.c new file mode 100644 index 0000000..18a34f6 --- /dev/null +++ b/spa/plugins/bluez5/sco-sink.c @@ -0,0 +1,1517 @@ +/* Spa SCO Sink + * + * 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 <arpa/inet.h> +#include <sys/ioctl.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.sink.sco"); +#undef SPA_LOG_TOPIC_DEFAULT +#define SPA_LOG_TOPIC_DEFAULT &log_topic + +#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 ready; + + struct buffer *current_buffer; + uint32_t ready_offset; + uint8_t write_buffer[4096]; + uint32_t write_buffer_size; +}; + +struct impl { + struct spa_handle handle; + struct spa_node node; + + /* Support */ + struct spa_log *log; + struct spa_loop *data_loop; + struct spa_system *data_system; + + /* Hooks and callbacks */ + struct spa_hook_list hooks; + struct spa_callbacks callbacks; + + /* Info */ + uint64_t info_all; + struct spa_node_info info; +#define IDX_PropInfo 0 +#define IDX_Props 1 +#define N_NODE_PARAMS 2 + struct spa_param_info params[N_NODE_PARAMS]; + struct props props; + + uint32_t quantum_limit; + + /* Transport */ + struct spa_bt_transport *transport; + struct spa_hook transport_listener; + + /* Port */ + struct port port; + + /* Flags */ + unsigned int started:1; + unsigned int following:1; + unsigned int flush_pending:1; + + /* Sources */ + struct spa_source source; + struct spa_source flush_timer_source; + + /* Timer */ + int timerfd; + int flush_timerfd; + struct spa_io_clock *clock; + struct spa_io_position *position; + + uint64_t current_time; + uint64_t next_time; + uint64_t process_time; + uint64_t prev_flush_time; + uint64_t next_flush_time; + + /* mSBC */ + sbc_t msbc; + uint8_t *buffer; + uint8_t *buffer_head; + uint8_t *buffer_next; + int buffer_size; + int msbc_seq; +}; + +#define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) == 0) + +static const char sntable[4] = { 0x08, 0x38, 0xC8, 0xF8 }; + +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) { + case 0: + param = spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_Props, id); + 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 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; + set_timers(this); + 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 { + spa_pod_parse_object(param, + SPA_TYPE_OBJECT_Props, NULL); + } + + 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 enable_flush_timer(struct impl *this, bool enabled) +{ + struct itimerspec ts; + + if (!enabled) + this->next_flush_time = 0; + + ts.it_value.tv_sec = this->next_flush_time / SPA_NSEC_PER_SEC; + ts.it_value.tv_nsec = this->next_flush_time % SPA_NSEC_PER_SEC; + ts.it_interval.tv_sec = 0; + ts.it_interval.tv_nsec = 0; + spa_system_timerfd_settime(this->data_system, + this->flush_timerfd, SPA_FD_TIMER_ABSTIME, &ts, NULL); + + this->flush_pending = enabled; +} + +static uint32_t get_queued_frames(struct impl *this) +{ + struct port *port = &this->port; + uint32_t bytes = 0; + struct buffer *b; + + spa_list_for_each(b, &port->ready, link) { + struct spa_data *d = b->buf->datas; + + bytes += d[0].chunk->size; + } + + if (bytes > port->ready_offset) + bytes -= port->ready_offset; + else + bytes = 0; + + return bytes / port->frame_size; +} + +static void flush_data(struct impl *this) +{ + struct port *port = &this->port; + const uint32_t min_in_size = + (this->transport->codec == HFP_AUDIO_CODEC_MSBC) ? + MSBC_DECODED_SIZE : this->transport->write_mtu; + uint8_t * const packet = + (this->transport->codec == HFP_AUDIO_CODEC_MSBC) ? + this->buffer_head : port->write_buffer; + const uint32_t packet_samples = min_in_size / port->frame_size; + const uint64_t packet_time = (uint64_t)packet_samples * SPA_NSEC_PER_SEC + / port->current_format.info.raw.rate; + int processed = 0; + int written; + + if (this->transport == NULL || this->transport->sco_io == NULL) + return; + + while (!spa_list_is_empty(&port->ready) && port->write_buffer_size < min_in_size) { + struct spa_data *datas; + + /* get buffer */ + if (!port->current_buffer) { + spa_return_if_fail(!spa_list_is_empty(&port->ready)); + port->current_buffer = spa_list_first(&port->ready, struct buffer, link); + port->ready_offset = 0; + } + datas = port->current_buffer->buf->datas; + + /* if buffer has data, copy it into the write buffer */ + if (datas[0].chunk->size - port->ready_offset > 0) { + const uint32_t avail = + SPA_MIN(min_in_size, datas[0].chunk->size - port->ready_offset); + const uint32_t size = + (avail + port->write_buffer_size) > min_in_size ? + min_in_size - port->write_buffer_size : avail; + memcpy(port->write_buffer + port->write_buffer_size, + (uint8_t *)datas[0].data + port->ready_offset, + size); + port->write_buffer_size += size; + port->ready_offset += size; + } else { + struct buffer *b; + + b = port->current_buffer; + port->current_buffer = NULL; + + /* reuse buffer */ + spa_list_remove(&b->link); + b->outstanding = true; + spa_log_trace(this->log, "sco-sink %p: reuse buffer %u", this, b->id); + port->io->buffer_id = b->id; + spa_node_call_reuse_buffer(&this->callbacks, 0, b->id); + } + } + + if (this->flush_pending) { + spa_log_trace(this->log, "%p: wait for flush timer", this); + return; + } + + if (port->write_buffer_size < min_in_size) { + /* wait for more data */ + spa_log_trace(this->log, "%p: skip flush", this); + enable_flush_timer(this, false); + return; + } + + if (this->transport->codec == HFP_AUDIO_CODEC_MSBC) { + ssize_t out_encoded; + + /* Encode */ + if (this->buffer_next + MSBC_ENCODED_SIZE > this->buffer + this->buffer_size) { + /* Buffer overrun; shouldn't usually happen. Drop data and reset. */ + this->buffer_head = this->buffer_next = this->buffer; + spa_log_warn(this->log, "sco-sink: mSBC buffer overrun, dropping data"); + } + this->buffer_next[0] = 0x01; + this->buffer_next[1] = sntable[this->msbc_seq % 4]; + this->buffer_next[59] = 0x00; + this->msbc_seq = (this->msbc_seq + 1) % 4; + processed = sbc_encode(&this->msbc, port->write_buffer, port->write_buffer_size, + this->buffer_next + 2, MSBC_ENCODED_SIZE - 3, &out_encoded); + if (processed < 0) { + spa_log_warn(this->log, "sbc_encode failed: %d", processed); + return; + } + this->buffer_next += out_encoded + 3; + port->write_buffer_size = 0; + + /* Write */ + written = spa_bt_sco_io_write(this->transport->sco_io, packet, + this->buffer_next - this->buffer_head); + if (written < 0) { + spa_log_warn(this->log, "failed to write data: %d (%s)", + written, spa_strerror(written)); + goto stop; + } + + this->buffer_head += written; + + if (this->buffer_head == this->buffer_next) + this->buffer_head = this->buffer_next = this->buffer; + else if (this->buffer_next + MSBC_ENCODED_SIZE > this->buffer + this->buffer_size) { + /* Written bytes is not necessarily commensurate + * with MSBC_ENCODED_SIZE. If this occurs, copy data. + */ + int size = this->buffer_next - this->buffer_head; + spa_memmove(this->buffer, this->buffer_head, size); + this->buffer_next = this->buffer + size; + this->buffer_head = this->buffer; + } + } else { + written = spa_bt_sco_io_write(this->transport->sco_io, packet, + port->write_buffer_size); + if (written < 0) { + spa_log_warn(this->log, "sco-sink: write failure: %d (%s)", + written, spa_strerror(written)); + goto stop; + } else if (written == 0) { + /* EAGAIN or similar, just skip ahead */ + written = SPA_MIN(port->write_buffer_size, (uint32_t)48); + } + + processed = written; + port->write_buffer_size -= written; + + if (port->write_buffer_size > 0 && written > 0) { + spa_memmove(port->write_buffer, port->write_buffer + written, port->write_buffer_size); + } + } + + if (SPA_UNLIKELY(spa_log_level_topic_enabled(this->log, SPA_LOG_TOPIC_DEFAULT, SPA_LOG_LEVEL_TRACE))) { + struct timespec ts; + uint64_t now; + uint64_t dt; + + spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &ts); + now = SPA_TIMESPEC_TO_NSEC(&ts); + dt = now - this->prev_flush_time; + this->prev_flush_time = now; + + spa_log_trace(this->log, + "%p: send wrote:%d dt:%"PRIu64, + this, written, dt); + } + + spa_log_trace(this->log, "write socket data %d", written); + + if (SPA_LIKELY(this->position)) { + uint32_t frames = get_queued_frames(this); + uint64_t duration_ns; + + /* + * Flush at the time position of the next buffered sample. + */ + duration_ns = ((uint64_t)this->position->clock.duration * SPA_NSEC_PER_SEC + / this->position->clock.rate.denom); + this->next_flush_time = this->process_time + duration_ns + - ((uint64_t)frames * SPA_NSEC_PER_SEC + / port->current_format.info.raw.rate); + + /* + * We could delay the output by one packet to avoid waiting + * for the next buffer and so make send intervals more regular. + * However, this appears not needed in practice, and it's better + * to not add latency if not needed. + */ +#if 0 + this->next_flush_time += SPA_MIN(packet_time, + duration_ns * (port->n_buffers - 1)); +#endif + } else { + if (this->next_flush_time == 0) + this->next_flush_time = this->process_time; + this->next_flush_time += packet_time; + } + + enable_flush_timer(this, true); + return; + +stop: + if (this->source.loop) + spa_loop_remove_source(this->data_loop, &this->source); + enable_flush_timer(this, false); +} + +static void sco_on_flush_timeout(struct spa_source *source) +{ + struct impl *this = source->data; + uint64_t exp; + int res; + + spa_log_trace(this->log, "%p: flush on timeout", this); + + if ((res = spa_system_timerfd_read(this->data_system, this->flush_timerfd, &exp)) < 0) { + if (res != -EAGAIN) + spa_log_warn(this->log, "error reading timerfd: %s", spa_strerror(res)); + return; + } + + if (this->transport == NULL) { + enable_flush_timer(this, false); + return; + } + + while (exp-- > 0) { + this->flush_pending = false; + flush_data(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; + struct spa_io_buffers *io = port->io; + 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_debug(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; + } + + this->next_time = now_time + duration * SPA_NSEC_PER_SEC / rate; + + if (SPA_LIKELY(this->clock)) { + this->clock->nsec = now_time; + this->clock->position += duration; + this->clock->duration = duration; + this->clock->rate_diff = 1.0f; + this->clock->next_nsec = this->next_time; + this->clock->delay = 0; + } + + spa_log_trace(this->log, "%p: %d", this, io->status); + io->status = SPA_STATUS_NEED_DATA; + spa_node_call_ready(&this->callbacks, SPA_STATUS_NEED_DATA); + + set_timeout(this, this->next_time); +} + +/* greater common divider */ +static int gcd(int a, int b) { + while(b) { + int c = b; + b = a % b; + a = c; + } + return a; +} +/* least common multiple */ +static int lcm(int a, int b) { + return (a*b)/gcd(a,b); +} + +static int do_start(struct impl *this) +{ + bool do_accept; + int res; + + /* Don't do anything if the node has already started */ + if (this->started) + return 0; + + /* Make sure the transport is valid */ + spa_return_val_if_fail(this->transport != NULL, -EIO); + + this->following = is_following(this); + + spa_log_debug(this->log, "%p: start following:%d", this, this->following); + + /* 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; + + /* 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; + + /* write_mtu might not be correct at this point, so we'll throw + * in some common ones, at the cost of a potentially larger + * allocation (size <= 120 * write_mtu). If it still fails to be + * commensurate, we may end up doing memmoves, but nothing worse + * is going to happen. + */ + this->buffer_size = lcm(24, lcm(60, lcm(this->transport->write_mtu, 2 * MSBC_ENCODED_SIZE))); + this->buffer = calloc(this->buffer_size, sizeof(uint8_t)); + this->buffer_head = this->buffer_next = this->buffer; + if (this->buffer == NULL) { + res = -errno; + goto fail; + } + } + + spa_return_val_if_fail(this->transport->write_mtu <= sizeof(this->port.write_buffer), -EINVAL); + + /* start socket i/o */ + if ((res = spa_bt_transport_ensure_sco_io(this->transport, this->data_loop)) < 0) + goto fail; + + /* Add the timeout callback */ + this->source.data = this; + this->source.fd = this->timerfd; + this->source.func = sco_on_timeout; + this->source.mask = SPA_IO_IN; + this->source.rmask = 0; + spa_loop_add_source(this->data_loop, &this->source); + + this->flush_timer_source.data = this; + this->flush_timer_source.fd = this->flush_timerfd; + this->flush_timer_source.func = sco_on_flush_timeout; + this->flush_timer_source.mask = SPA_IO_IN; + this->flush_timer_source.rmask = 0; + spa_loop_add_source(this->data_loop, &this->flush_timer_source); + + /* start processing */ + this->flush_pending = false; + set_timers(this); + + /* Set the started flag */ + this->started = true; + + return 0; + +fail: + free(this->buffer); + this->buffer = NULL; + spa_bt_transport_release(this->transport); + return res; +} + +/* Drop any buffered data remaining in the port */ +static void drop_port_output(struct impl *this) +{ + struct port *port = &this->port; + + port->write_buffer_size = 0; + port->current_buffer = NULL; + port->ready_offset = 0; + + while (!spa_list_is_empty(&port->ready)) { + struct buffer *b; + b = spa_list_first(&port->ready, struct buffer, link); + + spa_list_remove(&b->link); + b->outstanding = true; + port->io->buffer_id = b->id; + spa_node_call_reuse_buffer(&this->callbacks, 0, b->id); + } +} + +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; + + set_timeout(this, 0); + if (this->source.loop) + spa_loop_remove_source(this->data_loop, &this->source); + + if (this->flush_timer_source.loop) + spa_loop_remove_source(this->data_loop, &this->flush_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->flush_timerfd, 0, &ts, NULL); + + /* Drop buffered data in the ready queue. Ideally there shouldn't be any. */ + drop_port_output(this); + + return 0; +} + +static int do_stop(struct impl *this) +{ + int res = 0; + + if (!this->started) + return 0; + + spa_log_trace(this->log, "sco-sink %p: stop", this); + + spa_loop_invoke(this->data_loop, do_remove_source, 0, NULL, 0, true, this); + + this->started = false; + + if (this->buffer) { + free(this->buffer); + this->buffer = NULL; + this->buffer_head = this->buffer_next = this->buffer; + } + + if (this->transport) { + /* Release the transport; it is responsible for closing the fd */ + res = spa_bt_transport_release(this->transport); + } + + 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/Sink" }, + { SPA_KEY_NODE_DRIVER, "true" }, + }; + + const struct spa_dict_item ag_node_info_items[] = { + { SPA_KEY_DEVICE_API, "bluez5" }, + { SPA_KEY_MEDIA_CLASS, "Stream/Input/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_INPUT, 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->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]; + + b->buf = buffers[i]; + b->id = i; + b->outstanding = true; + + b->h = spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h)); + + if (buffers[i]->datas[0].data == NULL) { + spa_log_error(this->log, "%p: need mapped memory", this); + return -EINVAL; + } + } + 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) +{ + return -ENOTSUP; +} + +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; + + if (this->position && this->position->clock.flags & SPA_IO_CLOCK_FLAG_FREEWHEEL) { + io->status = SPA_STATUS_NEED_DATA; + return SPA_STATUS_HAVE_DATA; + } + + if (io->status == SPA_STATUS_HAVE_DATA && io->buffer_id < port->n_buffers) { + struct buffer *b = &port->buffers[io->buffer_id]; + + if (!b->outstanding) { + spa_log_warn(this->log, "%p: buffer %u in use", this, io->buffer_id); + io->status = -EINVAL; + return -EINVAL; + } + + spa_log_trace(this->log, "%p: queue buffer %u", this, io->buffer_id); + + spa_list_append(&port->ready, &b->link); + b->outstanding = false; + io->buffer_id = SPA_ID_INVALID; + io->status = SPA_STATUS_OK; + } + + if (this->following) { + if (this->position) { + this->current_time = this->position->clock.nsec; + } else { + struct timespec now; + spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now); + this->current_time = SPA_TIMESPEC_TO_NSEC(&now); + } + } + + this->process_time = this->current_time; + + if (!spa_list_is_empty(&port->ready)) { + spa_log_trace(this->log, "%p: flush on process", this); + flush_data(this); + } + + return SPA_STATUS_HAVE_DATA; +} + +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_system_close(this->data_system, this->flush_timerfd); + 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); + + this->info_all = SPA_NODE_CHANGE_MASK_FLAGS | + SPA_NODE_CHANGE_MASK_PARAMS | + SPA_NODE_CHANGE_MASK_PROPS; + this->info = SPA_NODE_INFO_INIT(); + this->info.max_input_ports = 1; + this->info.max_output_ports = 0; + 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->info.params = this->params; + this->info.n_params = N_NODE_PARAMS; + + port = &this->port; + port->info_all = SPA_PORT_CHANGE_MASK_FLAGS | + SPA_PORT_CHANGE_MASK_PARAMS; + port->info = SPA_PORT_INFO_INIT(); + port->info.flags = 0; + 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_INPUT); + port->latency.min_quantum = 1.0f; + port->latency.max_quantum = 1.0f; + + spa_list_init(&port->ready); + + 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); + + this->flush_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, "Play 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_sink_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_BLUEZ5_SCO_SINK, + &info, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; |