/* 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 #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" struct props { uint32_t min_latency; uint32_t max_latency; }; #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_param_info params[8]; 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; struct spa_param_info params[8]; struct props props; struct spa_bt_transport *transport; struct spa_hook transport_listener; struct port port; unsigned int started:1; struct spa_io_clock *clock; struct spa_io_position *position; /* 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 NAME "sco-source" #define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0) static const uint32_t default_min_latency = 128; static const uint32_t default_max_latency = 512; 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; 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: return 0; } 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: 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 impl_node_set_io(void *object, uint32_t id, void *data, size_t size) { struct impl *this = object; 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; } 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: { if (apply_props(this, param) > 0) { this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS; this->params[1].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; } } /* 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 easier debugging Caveat: If size_read is not a multiple of 16, then the last bytes will not be printed / logged */ static void hexdump_to_log(void *log, uint8_t *read_data, int size_read) { int rowsize = 16*3; int line_idx = 0; char hexline[16*3] = ""; int i; for (i = 0; i < size_read; ++i) { snprintf(&hexline[line_idx], 4, "%02X ", read_data[i]); line_idx += 3; if (line_idx == rowsize) { spa_log_trace(log, "Processing read data: read_data %02i: %s", i-15, hexline); line_idx = 0; } } } /* 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 void preprocess_and_decode_msbc_data(void *userdata, uint8_t *read_data, int size_read) { struct impl *this = userdata; struct port *port = &this->port; struct spa_data *datas = port->current_buffer->buf->datas; spa_log_trace(this->log, "handling mSBC data"); /* print hexdump of package */ bool flag_hexdump_to_log = false; if (flag_hexdump_to_log) { hexdump_to_log(this->log, read_data, size_read); } /* 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; } int i; for (i = 0; i < size_read; ++i) { msbc_buffer_append_byte(this, read_data[i]); /* Handle found mSBC packets. * * XXX: if there's no space for the decoded audio in * XXX: the current buffer, we'll drop data. */ if (this->msbc_buffer_pos == MSBC_ENCODED_SIZE) { spa_log_trace(this->log, "Received full mSBC packet, start processing it"); if (port->ready_offset + MSBC_DECODED_SIZE <= datas[0].maxsize) { int seq, processed; size_t written; spa_log_trace(this->log, "Output buffer has space, processing mSBC packet"); /* 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) { spa_log_info(this->log, "missing mSBC packet: %u != %u", seq, this->msbc_seq); this->msbc_seq = seq; /* TODO: Implement PLC. */ } this->msbc_seq = (this->msbc_seq + 1) % 4; /* decode frame */ processed = sbc_decode( &this->msbc, this->msbc_buffer + 2, MSBC_ENCODED_SIZE - 3, (uint8_t *)datas[0].data + port->ready_offset, MSBC_DECODED_SIZE, &written); if (processed < 0) { spa_log_warn(this->log, "sbc_decode failed: %d", processed); /* TODO: manage errors */ continue; } port->ready_offset += written; } else { spa_log_warn(this->log, "Output buffer full, dropping mSBC packet"); } } } } static int sco_source_cb(void *userdata, uint8_t *read_data, int size_read) { struct impl *this = userdata; struct port *port = &this->port; struct spa_io_buffers *io = port->io; struct spa_data *datas; uint32_t max_out_size; if (this->transport == NULL) { spa_log_debug(this->log, "no transport, stop reading"); goto stop; } /* get buffer */ if (!port->current_buffer) { if (spa_list_is_empty(&port->free)) { spa_log_warn(this->log, "buffer not available"); return 0; } port->current_buffer = spa_list_first(&port->free, struct buffer, link); spa_list_remove(&port->current_buffer->link); port->ready_offset = 0; } datas = port->current_buffer->buf->datas; if (this->transport->codec == HFP_AUDIO_CODEC_MSBC) { max_out_size = MSBC_DECODED_SIZE; } else { max_out_size = this->transport->read_mtu; } /* update the current pts */ spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &this->now); /* handle data read from socket */ spa_log_debug(this->log, "read socket data %d", size_read); if (this->transport->codec == HFP_AUDIO_CODEC_MSBC) { preprocess_and_decode_msbc_data(userdata, read_data, size_read); } else { uint8_t *packet; packet = (uint8_t *)datas[0].data + port->ready_offset; spa_memmove(packet, read_data, size_read); port->ready_offset += size_read; } /* send buffer if full */ if ((max_out_size + port->ready_offset) > (this->props.max_latency * port->frame_size)) { 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_list_append(&port->ready, &port->current_buffer->link); port->current_buffer = NULL; if (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->clock->duration; this->clock->delay = 0; this->clock->rate_diff = 1.0f; this->clock->next_nsec = this->clock->nsec; } } /* done if there are no buffers ready */ if (spa_list_is_empty(&port->ready)) return 0; /* process the buffer if IO does not have any */ if (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 0; stop: return 1; } 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) { bool do_accept; int res; /* Dont 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); /* Do accept if Gateway; otherwise do connect for Head Unit */ do_accept = this->transport->profile & SPA_BT_PROFILE_HEADSET_AUDIO_GATEWAY; /* acquire the socked 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(&this->port); /* 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 endianity, mSBC requires little endian */ this->msbc.endian = SBC_LE; this->msbc_seq_initialized = false; this->msbc_buffer_pos = 0; } /* Start socket i/o */ spa_bt_transport_ensure_sco_io(this->transport, this->data_loop); spa_loop_invoke(this->data_loop, do_add_source, 0, NULL, 0, true, this); /* Set the started flag */ this->started = true; return 0; } 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->transport) spa_bt_sco_io_set_source_cb(this->transport->sco_io, NULL, NULL); return 0; } static int do_stop(struct impl *this) { 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); } 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 const struct spa_dict_item node_info_items[] = { { SPA_KEY_DEVICE_API, "bluez5" }, { SPA_KEY_MEDIA_CLASS, "Audio/Source" }, { SPA_KEY_NODE_DRIVER, "true" }, { SPA_KEY_NODE_PAUSE_ON_IDLE, "false" }, }; static void emit_node_info(struct impl *this, bool full) { if (full) this->info.change_mask = this->info_all; if (this->info.change_mask) { this->info.props = &SPA_DICT_INIT_ARRAY(node_info_items); spa_node_emit_info(&this->hooks, &this->info); this->info.change_mask = 0; } } static void emit_port_info(struct impl *this, struct port *port, bool full) { 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 = 0; } } 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->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; 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; 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 * 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[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE); port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ); } else { port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); port->params[4] = 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; 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; 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 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); /* 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; 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 (strcmp(type, SPA_TYPE_INTERFACE_Node) == 0) *interface = &this->node; else return -ENOENT; return 0; } static int impl_clear(struct spa_handle *handle) { struct impl *this = (struct impl *) handle; 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.flags = SPA_NODE_FLAG_RT; this->params[0] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ); this->params[1] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE); this->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ); this->info.params = this->params; this->info.n_params = 3; /* 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[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ); port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ); port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ); port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0); port->info.params = port->params; port->info.n_params = 5; /* Init the buffer lists */ spa_list_init(&port->ready); spa_list_init(&port->free); 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); 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 hsp/hfp" }, { SPA_KEY_FACTORY_USAGE, SPA_KEY_API_BLUEZ5_TRANSPORT"=" }, }; static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items); 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, };