/* Spa A2DP Source * * Copyright © 2018 Wim Taymans * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "defs.h" #include "rtp.h" #include "a2dp-codecs.h" struct props { uint32_t min_latency; uint32_t max_latency; }; #define FILL_FRAMES 2 #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; uint32_t frame_size; unsigned int have_format:1; uint64_t info_all; struct spa_port_info info; struct spa_io_buffers *io; 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 buffer *current_buffer; uint32_t ready_offset; }; 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; 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 transport_acquired:1; unsigned int following:1; struct spa_source source; struct spa_io_clock *clock; struct spa_io_position *position; const struct a2dp_codec *codec; bool codec_props_changed; void *codec_props; void *codec_data; struct spa_audio_info codec_format; uint8_t buffer_read[4096]; struct timespec now; uint64_t sample_count; uint64_t skip_count; bool is_input; }; #define NAME "a2dp-source" #define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0) static const uint32_t default_min_latency = MIN_LATENCY; static const uint32_t default_max_latency = MAX_LATENCY; static void reset_props(struct props *props) { props->min_latency = default_min_latency; props->max_latency = default_max_latency; } 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, index_offset = 0; bool enum_codec = false; 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: { struct props *p = &this->props; switch (result.index) { case 0: param = spa_pod_builder_add_object(&b, SPA_TYPE_OBJECT_PropInfo, id, SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_minLatency), SPA_PROP_INFO_name, SPA_POD_String("The minimum latency"), SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Int(p->min_latency, 1, INT32_MAX)); break; case 1: param = spa_pod_builder_add_object(&b, SPA_TYPE_OBJECT_PropInfo, id, SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_maxLatency), SPA_PROP_INFO_name, SPA_POD_String("The maximum latency"), SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Int(p->max_latency, 1, INT32_MAX)); break; default: enum_codec = true; index_offset = 2; } break; } case SPA_PARAM_Props: { struct props *p = &this->props; switch (result.index) { case 0: param = spa_pod_builder_add_object(&b, SPA_TYPE_OBJECT_Props, id, SPA_PROP_minLatency, SPA_POD_Int(p->min_latency), SPA_PROP_maxLatency, SPA_POD_Int(p->max_latency)); break; default: enum_codec = true; index_offset = 1; } break; } default: return -ENOENT; } if (enum_codec) { int res; if (this->codec->enum_props == NULL || this->codec_props == NULL) return 0; else if ((res = this->codec->enum_props(this->codec_props, this->transport->device->settings, id, result.index - index_offset, &b, ¶m)) != 1) return res; } 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 do_reassing_follower(struct spa_loop *loop, bool async, uint32_t seq, const void *data, size_t size, void *user_data) { 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; 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, NAME" %p: reassign follower %d->%d", this, this->following, following); this->following = following; spa_loop_invoke(this->data_loop, do_reassing_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, SPA_PROP_minLatency, SPA_POD_OPT_Int(&new_props.min_latency), SPA_PROP_maxLatency, SPA_POD_OPT_Int(&new_props.max_latency)); } 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: { int res, codec_res = 0; res = apply_props(this, param); if (this->codec_props && this->codec->set_props) { codec_res = this->codec->set_props(this->codec_props, param); if (codec_res > 0) this->codec_props_changed = true; } if (res > 0 || codec_res > 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); port->current_buffer = NULL; 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, NAME " %p: recycle buffer %u", this, buffer_id); spa_list_append(&port->free, &b->link); b->outstanding = false; } } static int32_t read_data(struct impl *this) { const ssize_t b_size = sizeof(this->buffer_read); int32_t size_read = 0; again: /* read data from socket */ size_read = read(this->source.fd, this->buffer_read, b_size); if (size_read == 0) return 0; else if (size_read < 0) { /* retry if interrupted */ if (errno == EINTR) goto again; /* return socket has no data */ if (errno == EAGAIN || errno == EWOULDBLOCK) return 0; /* go to 'stop' if socket has an error */ spa_log_error(this->log, "read error: %s", strerror(errno)); return -errno; } return size_read; } static int32_t decode_data(struct impl *this, uint8_t *src, uint32_t src_size, uint8_t *dst, uint32_t dst_size) { ssize_t processed; size_t written, avail; if ((processed = this->codec->start_decode(this->codec_data, src, src_size, NULL, NULL)) < 0) return processed; src += processed; src_size -= processed; /* decode */ avail = dst_size; while (src_size > 0) { if ((processed = this->codec->decode(this->codec_data, src, src_size, dst, avail, &written)) <= 0) return processed; /* update source and dest pointers */ spa_return_val_if_fail (avail > written, -ENOSPC); src_size -= processed; src += processed; avail -= written; dst += written; } return dst_size - avail; } static void skip_ready_buffers(struct impl *this) { struct port *port = &this->port; /* Move all buffers from ready to free */ while (!spa_list_is_empty(&port->ready)) { struct buffer *b; b = spa_list_first(&port->ready, struct buffer, link); spa_list_remove(&b->link); spa_list_append(&port->free, &b->link); spa_assert(!b->outstanding); this->skip_count += b->buf->datas[0].chunk->size / port->frame_size; } } static void a2dp_on_ready_read(struct spa_source *source) { struct impl *this = source->data; struct port *port = &this->port; struct spa_io_buffers *io = port->io; int32_t size_read, decoded, avail; struct spa_data *datas; struct buffer *buffer; uint32_t min_data; uint8_t read_decoded[4096]; /* make sure the source is an input */ if ((source->rmask & SPA_IO_IN) == 0) { spa_log_error(this->log, "source is not an input, rmask=%d", source->rmask); goto stop; } if (this->transport == NULL) { spa_log_debug(this->log, "no transport, stop reading"); goto stop; } /* update the current pts */ spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &this->now); /* read */ size_read = read_data (this); if (size_read == 0) return; if (size_read < 0) { spa_log_error(this->log, "failed to read data: %s", spa_strerror(size_read)); goto stop; } spa_log_trace(this->log, "read socket data %d", size_read); if (this->codec_props_changed && this->codec_props && this->codec->update_props) { this->codec->update_props(this->codec_data, this->codec_props); this->codec_props_changed = false; } /* decode */ decoded = decode_data(this, this->buffer_read, size_read, read_decoded, sizeof (read_decoded)); if (decoded < 0) { spa_log_error(this->log, "failed to decode data: %d", decoded); goto stop; } if (decoded == 0) return; spa_log_trace(this->log, "decoded socket data %d", decoded); /* discard when not started */ if (!this->started) return; /* get buffer */ if (!port->current_buffer) { if (spa_list_is_empty(&port->free)) { /* xrun, skip ahead */ skip_ready_buffers(this); this->skip_count += decoded / port->frame_size; this->sample_count += decoded / port->frame_size; return; } if (this->skip_count > 0) { spa_log_info(this->log, NAME " %p: xrun, skipped %"PRIu64" usec", this, (uint64_t)(this->skip_count * SPA_USEC_PER_SEC / port->current_format.info.raw.rate)); this->skip_count = 0; } buffer = spa_list_first(&port->free, struct buffer, link); spa_list_remove(&buffer->link); port->current_buffer = buffer; port->ready_offset = 0; spa_log_trace(this->log, "dequeue %d", buffer->id); if (buffer->h) { buffer->h->seq = this->sample_count; buffer->h->pts = SPA_TIMESPEC_TO_NSEC(&this->now); buffer->h->dts_offset = 0; } } else { buffer = port->current_buffer; } datas = buffer->buf->datas; /* copy data into buffer */ avail = SPA_MIN(decoded, (int32_t)(datas[0].maxsize - port->ready_offset)); if (avail < decoded) spa_log_warn(this->log, NAME ": buffer too small (%d > %d)", decoded, avail); memcpy ((uint8_t *)datas[0].data + port->ready_offset, read_decoded, avail); port->ready_offset += avail; this->sample_count += decoded / port->frame_size; /* send buffer if full */ min_data = SPA_MIN(this->props.min_latency * port->frame_size, datas[0].maxsize / 2); if (port->ready_offset >= min_data) { uint64_t sample_count; datas[0].chunk->offset = 0; datas[0].chunk->size = port->ready_offset; datas[0].chunk->stride = port->frame_size; sample_count = datas[0].chunk->size / port->frame_size; spa_log_trace(this->log, "queue %d", buffer->id); spa_list_append(&port->ready, &buffer->link); port->current_buffer = NULL; if (!this->following && this->clock) { this->clock->nsec = SPA_TIMESPEC_TO_NSEC(&this->now); this->clock->duration = sample_count * this->clock->rate.denom / port->current_format.info.raw.rate; this->clock->position = this->sample_count * this->clock->rate.denom / port->current_format.info.raw.rate; this->clock->delay = 0; this->clock->rate_diff = 1.0f; this->clock->next_nsec = this->clock->nsec + (uint64_t)sample_count * SPA_NSEC_PER_SEC / port->current_format.info.raw.rate; } } /* done if there are no buffers ready */ if (spa_list_is_empty(&port->ready)) return; if (this->following) return; /* process the buffer if IO does not have any */ if (io != NULL && io->status != SPA_STATUS_HAVE_DATA) { struct buffer *b; if (io->buffer_id < port->n_buffers) recycle_buffer(this, port, io->buffer_id); b = spa_list_first(&port->ready, struct buffer, link); spa_list_remove(&b->link); b->outstanding = true; io->buffer_id = b->id; io->status = SPA_STATUS_HAVE_DATA; } /* notify ready */ spa_node_call_ready(&this->callbacks, SPA_STATUS_HAVE_DATA); return; stop: if (this->source.loop) spa_loop_remove_source(this->data_loop, &this->source); } static int transport_start(struct impl *this) { int res, val; struct port *port = &this->port; if (this->transport_acquired) return 0; spa_log_debug(this->log, NAME" %p: transport %p acquire", this, this->transport); if ((res = spa_bt_transport_acquire(this->transport, false)) < 0) return res; this->transport_acquired = true; this->codec_data = this->codec->init(this->codec, 0, this->transport->configuration, this->transport->configuration_len, &port->current_format, this->codec_props, this->transport->read_mtu); if (this->codec_data == NULL) return -EIO; spa_log_info(this->log, NAME " %p: using A2DP codec %s", this, this->codec->description); val = fcntl(this->transport->fd, F_GETFL); if (fcntl(this->transport->fd, F_SETFL, val | O_NONBLOCK) < 0) spa_log_warn(this->log, NAME" %p: fcntl %u %m", this, val | O_NONBLOCK); val = FILL_FRAMES * this->transport->write_mtu; if (setsockopt(this->transport->fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof(val)) < 0) spa_log_warn(this->log, NAME" %p: SO_SNDBUF %m", this); val = FILL_FRAMES * this->transport->read_mtu; if (setsockopt(this->transport->fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof(val)) < 0) spa_log_warn(this->log, NAME" %p: SO_RCVBUF %m", this); val = 6; if (setsockopt(this->transport->fd, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val)) < 0) spa_log_warn(this->log, "SO_PRIORITY failed: %m"); reset_buffers(&this->port); this->source.data = this; this->source.fd = this->transport->fd; this->source.func = a2dp_on_ready_read; this->source.mask = SPA_IO_IN; this->source.rmask = 0; spa_loop_add_source(this->data_loop, &this->source); this->sample_count = 0; this->skip_count = 0; return 0; } static int do_start(struct impl *this) { int res = 0; if (this->started) return 0; this->following = is_following(this); spa_log_debug(this->log, NAME" %p: start state:%d following:%d", this, this->transport->state, this->following); spa_return_val_if_fail(this->transport != NULL, -EIO); if (this->transport->state >= SPA_BT_TRANSPORT_STATE_PENDING) res = transport_start(this); this->started = true; 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; if (this->source.loop) spa_loop_remove_source(this->data_loop, &this->source); return 0; } static int transport_stop(struct impl *this) { int res; spa_log_debug(this->log, NAME" %p: transport stop", this); spa_loop_invoke(this->data_loop, do_remove_source, 0, NULL, 0, true, this); if (this->transport && this->transport_acquired) res = spa_bt_transport_release(this->transport); else res = 0; this->transport_acquired = false; if (this->codec_data) this->codec->deinit(this->codec_data); this->codec_data = NULL; return res; } static int do_stop(struct impl *this) { int res; if (!this->started) return 0; spa_log_debug(this->log, NAME" %p: stop", this); res = transport_stop(this); this->started = false; 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_Suspend: case SPA_NODE_COMMAND_Pause: if ((res = do_stop(this)) < 0) return res; break; default: return -ENOTSUP; } return 0; } static void emit_node_info(struct impl *this, bool full) { char latency[64] = SPA_STRINGIFY(MIN_LATENCY)"/48000"; uint64_t old = full ? this->info.change_mask : 0; struct spa_dict_item node_info_items[] = { { SPA_KEY_DEVICE_API, "bluez5" }, { SPA_KEY_MEDIA_CLASS, this->is_input ? "Audio/Source" : "Stream/Output/Audio" }, { SPA_KEY_NODE_LATENCY, latency }, { "media.name", ((this->transport && this->transport->device->name) ? this->transport->device->name : "A2DP") }, { SPA_KEY_NODE_DRIVER, this->is_input ? "true" : "false" }, }; if (full) this->info.change_mask = this->info_all; if (this->info.change_mask) { if (this->transport && this->port.have_format) snprintf(latency, sizeof(latency), "%d/%d", (int)this->props.min_latency, (int)this->port.current_format.info.raw.rate); this->info.props = &SPA_DICT_INIT_ARRAY(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; int res; 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->codec == NULL) return -EIO; if (this->transport == NULL) return -EIO; if ((res = this->codec->enum_config(this->codec, this->transport->configuration, this->transport->configuration_len, id, result.index, &b, ¶m)) != 1) return res; 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(8, 8, MAX_BUFFERS), SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1), SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int( this->props.max_latency * port->frame_size, this->props.min_latency * port->frame_size, INT32_MAX), SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->frame_size), SPA_PARAM_BUFFERS_align, SPA_POD_Int(16)); 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; 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; } port->current_buffer = NULL; 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; port->frame_size = info.info.raw.channels; switch (info.info.raw.format) { case SPA_AUDIO_FORMAT_S16: port->frame_size *= 2; break; case SPA_AUDIO_FORMAT_S24: port->frame_size *= 3; break; case SPA_AUDIO_FORMAT_S24_32: case SPA_AUDIO_FORMAT_S32: case SPA_AUDIO_FORMAT_F32: port->frame_size *= 4; break; default: return -EINVAL; } 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); if (!port->have_format) return -EIO; clear_buffers(this, port); 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, NAME " %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; 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 int impl_node_process(void *object) { struct impl *this = object; struct port *port; struct spa_io_buffers *io; struct buffer *buffer; spa_return_val_if_fail(this != NULL, -EINVAL); port = &this->port; io = port->io; spa_return_val_if_fail(io != NULL, -EIO); spa_log_trace(this->log, "%p status:%d", this, io->status); /* 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; } /* 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 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; this->transport_acquired = false; 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; if (this->codec_data) this->codec->deinit(this->codec_data); if (this->codec_props && this->codec->clear_props) this->codec->clear_props(this->codec_props); if (this->transport) spa_hook_remove(&this->transport_listener); 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); 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.max_input_ports = 0; this->info.max_output_ports = 1; 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); if (info != NULL) { if ((str = spa_dict_lookup(info, SPA_KEY_API_BLUEZ5_TRANSPORT)) != NULL) sscanf(str, "pointer:%p", &this->transport); if ((str = spa_dict_lookup(info, "bluez5.a2dp-source-role")) != NULL) this->is_input = spa_streq(str, "input"); } if (this->transport == NULL) { spa_log_error(this->log, "a transport is needed"); return -EINVAL; } if (this->transport->a2dp_codec == NULL) { spa_log_error(this->log, "a transport codec is needed"); return -EINVAL; } this->codec = this->transport->a2dp_codec; if (this->codec->init_props != NULL) this->codec_props = this->codec->init_props(this->codec, this->transport->device->settings); spa_bt_transport_add_listener(this->transport, &this->transport_listener, &transport_events, this); 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. " }, { SPA_KEY_FACTORY_DESCRIPTION, "Capture bluetooth audio with a2dp" }, { SPA_KEY_FACTORY_USAGE, SPA_KEY_API_BLUEZ5_TRANSPORT"=" }, }; static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items); const struct spa_handle_factory spa_a2dp_source_factory = { SPA_VERSION_HANDLE_FACTORY, SPA_NAME_API_BLUEZ5_A2DP_SOURCE, &info, impl_get_size, impl_init, impl_enum_interface_info, };