summaryrefslogtreecommitdiffstats
path: root/spa/plugins/support/null-audio-sink.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--spa/plugins/support/null-audio-sink.c1001
1 files changed, 1001 insertions, 0 deletions
diff --git a/spa/plugins/support/null-audio-sink.c b/spa/plugins/support/null-audio-sink.c
new file mode 100644
index 0000000..e5b9f04
--- /dev/null
+++ b/spa/plugins/support/null-audio-sink.c
@@ -0,0 +1,1001 @@
+/* Spa
+ *
+ * Copyright © 2020 Wim Taymans
+ *
+ * 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 <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/log.h>
+#include <spa/support/system.h>
+#include <spa/support/loop.h>
+#include <spa/utils/list.h>
+#include <spa/utils/keys.h>
+#include <spa/utils/json.h>
+#include <spa/utils/result.h>
+#include <spa/utils/string.h>
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/node/keys.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/debug/types.h>
+#include <spa/debug/mem.h>
+#include <spa/param/audio/type-info.h>
+#include <spa/param/param.h>
+#include <spa/pod/filter.h>
+#include <spa/control/control.h>
+
+#define NAME "null-audio-sink"
+
+#define DEFAULT_CLOCK_NAME "clock.system.monotonic"
+
+struct props {
+ uint32_t channels;
+ uint32_t rate;
+ uint32_t n_pos;
+ uint32_t pos[SPA_AUDIO_MAX_CHANNELS];
+ char clock_name[64];
+ unsigned int debug:1;
+};
+
+static void reset_props(struct props *props)
+{
+ props->channels = 0;
+ props->rate = 0;
+ props->n_pos = 0;
+ strncpy(props->clock_name, DEFAULT_CLOCK_NAME, sizeof(props->clock_name));
+ props->debug = false;
+}
+
+#define DEFAULT_CHANNELS 2
+#define DEFAULT_RATE 48000
+
+#define MAX_BUFFERS 16
+#define MAX_PORTS 1
+
+struct buffer {
+ uint32_t id;
+#define BUFFER_FLAG_OUT (1<<0)
+ uint32_t flags;
+ struct spa_buffer *outbuf;
+};
+
+struct impl;
+
+struct port {
+ uint64_t info_all;
+ struct spa_port_info info;
+ struct spa_param_info params[5];
+
+ struct spa_io_buffers *io;
+
+ bool have_format;
+ struct spa_audio_info current_format;
+ uint32_t blocks;
+ size_t bpf;
+
+ struct buffer buffers[MAX_BUFFERS];
+ uint32_t n_buffers;
+};
+
+struct impl {
+ struct spa_handle handle;
+ struct spa_node node;
+
+ struct spa_log *log;
+ struct spa_loop *data_loop;
+ struct spa_system *data_system;
+
+ uint32_t quantum_limit;
+
+ struct props props;
+
+ uint64_t info_all;
+ struct spa_node_info info;
+ struct spa_param_info params[2];
+ struct spa_io_clock *clock;
+ struct spa_io_position *position;
+
+ struct spa_hook_list hooks;
+ struct spa_callbacks callbacks;
+
+ struct port port;
+
+ unsigned int started:1;
+ unsigned int following:1;
+ struct spa_source timer_source;
+ struct itimerspec timerspec;
+ uint64_t next_time;
+};
+
+#define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS)
+
+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_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_Clock),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_clock)));
+ break;
+ case 1:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Position),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_position)));
+ 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 void set_timeout(struct impl *this, uint64_t next_time)
+{
+ spa_log_trace(this->log, "set timeout %"PRIu64, next_time);
+ this->timerspec.it_value.tv_sec = next_time / SPA_NSEC_PER_SEC;
+ this->timerspec.it_value.tv_nsec = next_time % SPA_NSEC_PER_SEC;
+ spa_system_timerfd_settime(this->data_system,
+ this->timer_source.fd, SPA_FD_TIMER_ABSTIME, &this->timerspec, NULL);
+}
+
+static int set_timers(struct impl *this)
+{
+ struct timespec now;
+ int res;
+
+ if ((res = spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now)) < 0)
+ return res;
+ this->next_time = SPA_TIMESPEC_TO_NSEC(&now);
+
+ if (this->following) {
+ set_timeout(this, 0);
+ } else {
+ set_timeout(this, this->next_time);
+ }
+ return 0;
+}
+
+static inline bool is_following(struct impl *this)
+{
+ return this->position && this->clock && this->position->clock.id != this->clock->id;
+}
+
+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 int reassign_follower(struct impl *this)
+{
+ bool following;
+
+ if (!this->started)
+ return 0;
+
+ following = is_following(this);
+ if (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_reassign_follower, 0, NULL, 0, true, this);
+ }
+ 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:
+ if (size > 0 && size < sizeof(struct spa_io_clock))
+ return -EINVAL;
+ 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;
+ }
+ reassign_follower(this);
+
+ return 0;
+}
+
+static void on_timeout(struct spa_source *source)
+{
+ struct impl *this = source->data;
+ uint64_t expirations, nsec, duration = 10;
+ uint32_t rate;
+ int res;
+
+ spa_log_trace(this->log, "timeout");
+
+ if ((res = spa_system_timerfd_read(this->data_system,
+ this->timer_source.fd, &expirations)) < 0) {
+ if (res != EAGAIN)
+ spa_log_error(this->log, NAME " %p: timerfd error: %s",
+ this, spa_strerror(res));
+ return;
+ }
+
+ nsec = this->next_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 = nsec + duration * SPA_NSEC_PER_SEC / rate;
+
+ if (SPA_LIKELY(this->clock)) {
+ this->clock->nsec = nsec;
+ this->clock->position += duration;
+ this->clock->duration = duration;
+ this->clock->delay = 0;
+ this->clock->rate_diff = 1.0;
+ this->clock->next_nsec = this->next_time;
+ }
+
+ spa_node_call_ready(&this->callbacks, SPA_STATUS_NEED_DATA);
+
+ set_timeout(this, this->next_time);
+}
+
+static int do_start(struct impl *this)
+{
+ if (this->started)
+ return 0;
+
+ this->following = is_following(this);
+ set_timers(this);
+ this->started = true;
+ return 0;
+}
+
+static int do_stop(struct impl *this)
+{
+ if (!this->started)
+ return 0;
+ this->started = false;
+ set_timeout(this, 0);
+ return 0;
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ 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;
+
+ do_start(this);
+ break;
+ }
+ case SPA_NODE_COMMAND_Suspend:
+ case SPA_NODE_COMMAND_Pause:
+ do_stop(this);
+ break;
+
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+static const struct spa_dict_item node_info_items[] = {
+ { SPA_KEY_NODE_DRIVER, "true" },
+};
+
+static void emit_node_info(struct impl *this, bool full)
+{
+ 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 = &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_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
+port_enum_formats(struct impl *this,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t index,
+ struct spa_pod **param,
+ struct spa_pod_builder *builder)
+{
+ struct spa_pod_frame f[1];
+
+ switch (index) {
+ case 0:
+ spa_pod_builder_push_object(builder, &f[0],
+ SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat);
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
+ SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
+ SPA_FORMAT_AUDIO_format, SPA_POD_CHOICE_ENUM_Id(3,
+ SPA_AUDIO_FORMAT_F32P,
+ SPA_AUDIO_FORMAT_F32P,
+ SPA_AUDIO_FORMAT_F32),
+ 0);
+
+ if (this->props.rate != 0) {
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_AUDIO_rate, SPA_POD_Int(this->props.rate),
+ 0);
+ } else {
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_AUDIO_rate, SPA_POD_CHOICE_RANGE_Int(DEFAULT_RATE, 1, INT32_MAX),
+ 0);
+ }
+ if (this->props.channels != 0) {
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_AUDIO_channels, SPA_POD_Int(this->props.channels),
+ 0);
+ } else {
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_AUDIO_channels, SPA_POD_CHOICE_RANGE_Int(DEFAULT_CHANNELS, 1, INT32_MAX),
+ 0);
+ }
+ if (this->props.n_pos != 0) {
+ spa_pod_builder_prop(builder, SPA_FORMAT_AUDIO_position, 0);
+ spa_pod_builder_array(builder, sizeof(uint32_t), SPA_TYPE_Id,
+ this->props.n_pos, this->props.pos);
+ }
+ *param = spa_pod_builder_pop(builder, &f[0]);
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+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_builder b = { 0 };
+ uint8_t buffer[1024];
+ struct spa_pod *param;
+ 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 ((res = port_enum_formats(this, direction, port_id,
+ result.index, &param, &b)) <= 0)
+ 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(1, 1, MAX_BUFFERS),
+ SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(port->blocks),
+ SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int(
+ this->quantum_limit * port->bpf,
+ 16 * port->bpf,
+ INT32_MAX),
+ SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->bpf));
+ 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;
+ 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)
+{
+ if (port->n_buffers > 0) {
+ spa_log_info(this->log, NAME " %p: clear buffers", this);
+ port->n_buffers = 0;
+ this->started = false;
+ }
+ return 0;
+}
+
+static int
+port_set_format(struct impl *this,
+ enum spa_direction direction,
+ uint32_t port_id,
+ uint32_t flags,
+ const struct spa_pod *format)
+{
+ int res;
+ struct port *port = &this->port;
+
+ if (format == NULL) {
+ port->have_format = false;
+ clear_buffers(this, port);
+ } else {
+ struct spa_audio_info info = { 0 };
+
+ if ((res = spa_format_parse(format, &info.media_type, &info.media_subtype)) < 0)
+ return res;
+
+ 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.rate == 0 ||
+ info.info.raw.channels == 0 ||
+ info.info.raw.channels > SPA_AUDIO_MAX_CHANNELS)
+ return -EINVAL;
+
+ if (info.info.raw.format == SPA_AUDIO_FORMAT_F32) {
+ port->bpf = 4 * info.info.raw.channels;
+ port->blocks = 1;
+ } else if (info.info.raw.format == SPA_AUDIO_FORMAT_F32P) {
+ port->bpf = 4;
+ port->blocks = info.info.raw.channels;
+ } else
+ 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_RATE;
+ port->info.rate = SPA_FRACTION(1, port->current_format.info.raw.rate);
+ port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE);
+ port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ);
+ } else {
+ port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[3] = 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;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+
+ switch (id) {
+ case SPA_PARAM_Format:
+ return port_set_format(this, direction, port_id, flags, param);
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+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;
+
+ 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;
+ struct spa_data *d = buffers[i]->datas;
+
+ b = &port->buffers[i];
+ b->id = i;
+ b->flags = 0;
+ b->outbuf = buffers[i];
+
+ if (d[0].data == NULL) {
+ spa_log_error(this->log, NAME " %p: invalid memory on buffer %p", this,
+ buffers[i]);
+ 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;
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+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 (io->status != SPA_STATUS_HAVE_DATA)
+ return io->status;
+ if (io->buffer_id >= port->n_buffers) {
+ io->status = -EINVAL;
+ return io->status;
+ }
+ if (this->props.debug) {
+ struct buffer *b;
+ uint32_t i;
+
+ b = &port->buffers[io->buffer_id];
+ for (i = 0; i < b->outbuf->n_datas; i++) {
+ uint32_t offs, size;
+ struct spa_data *d = b->outbuf->datas;
+
+ offs = SPA_MIN(d->chunk->offset, d->maxsize);
+ size = SPA_MIN(d->maxsize - offs, d->chunk->size);
+ spa_debug_mem(i, SPA_PTROFF(d[i].data, offs, void), SPA_MIN(16u, size));;
+ }
+ }
+ io->status = SPA_STATUS_OK;
+ 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,
+ .enum_params = impl_node_enum_params,
+ .set_io = impl_node_set_io,
+ .send_command = impl_node_send_command,
+ .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,
+ .process = impl_node_process,
+};
+
+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 do_remove_timer(struct spa_loop *loop, bool async, uint32_t seq, const void *data, size_t size, void *user_data)
+{
+ struct impl *this = user_data;
+ spa_loop_remove_source(this->data_loop, &this->timer_source);
+ return 0;
+}
+
+static int impl_clear(struct spa_handle *handle)
+{
+ struct impl *this;
+
+ spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+ this = (struct impl *) handle;
+
+ spa_loop_invoke(this->data_loop, do_remove_timer, 0, NULL, 0, true, this);
+ spa_system_close(this->data_system, this->timer_source.fd);
+
+ return 0;
+}
+
+static size_t
+impl_get_size(const struct spa_handle_factory *factory,
+ const struct spa_dict *params)
+{
+ return sizeof(struct impl);
+}
+
+static uint32_t channel_from_name(const char *name)
+{
+ int i;
+ for (i = 0; spa_type_audio_channel[i].name; i++) {
+ if (spa_streq(name, spa_debug_type_short_name(spa_type_audio_channel[i].name)))
+ return spa_type_audio_channel[i].type;
+ }
+ return SPA_AUDIO_CHANNEL_UNKNOWN;
+}
+
+static inline void parse_position(struct impl *this, const char *val, size_t len)
+{
+ struct spa_json it[2];
+ char v[256];
+
+ spa_json_init(&it[0], val, len);
+ if (spa_json_enter_array(&it[0], &it[1]) <= 0)
+ spa_json_init(&it[1], val, len);
+
+ this->props.n_pos = 0;
+ while (spa_json_get_string(&it[1], v, sizeof(v)) > 0 &&
+ this->props.n_pos < SPA_AUDIO_MAX_CHANNELS) {
+ this->props.pos[this->props.n_pos++] = channel_from_name(v);
+ }
+}
+
+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;
+ uint32_t i;
+
+ 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;
+ }
+ spa_hook_list_init(&this->hooks);
+
+ this->node.iface = SPA_INTERFACE_INIT(
+ SPA_TYPE_INTERFACE_Node,
+ SPA_VERSION_NODE,
+ &impl_node, this);
+
+ 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 = 1;
+ this->info.flags = SPA_NODE_FLAG_RT;
+ this->params[0] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ this->info.params = this->params;
+ this->info.n_params = 1;
+ reset_props(&this->props);
+
+ 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 = SPA_PORT_FLAG_NO_REF |
+ SPA_PORT_FLAG_LIVE;
+ port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+ port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ port->info.params = port->params;
+ port->info.n_params = 4;
+
+ this->timer_source.func = on_timeout;
+ this->timer_source.data = this;
+ this->timer_source.fd = spa_system_timerfd_create(this->data_system, CLOCK_MONOTONIC,
+ SPA_FD_CLOEXEC | SPA_FD_NONBLOCK);
+ this->timer_source.mask = SPA_IO_IN;
+ this->timer_source.rmask = 0;
+ this->timerspec.it_value.tv_sec = 0;
+ this->timerspec.it_value.tv_nsec = 0;
+ this->timerspec.it_interval.tv_sec = 0;
+ this->timerspec.it_interval.tv_nsec = 0;
+
+ spa_loop_add_source(this->data_loop, &this->timer_source);
+
+ for (i = 0; info && i < info->n_items; i++) {
+ const char *k = info->items[i].key;
+ const char *s = info->items[i].value;
+ if (spa_streq(k, "clock.quantum-limit")) {
+ spa_atou32(s, &this->quantum_limit, 0);
+ } else if (spa_streq(k, SPA_KEY_AUDIO_CHANNELS)) {
+ this->props.channels = atoi(s);
+ } else if (spa_streq(k, SPA_KEY_AUDIO_RATE)) {
+ this->props.rate = atoi(s);
+ } else if (spa_streq(k, SPA_KEY_AUDIO_POSITION)) {
+ parse_position(this, s, strlen(s));
+ } else if (spa_streq(k, "clock.name")) {
+ spa_scnprintf(this->props.clock_name,
+ sizeof(this->props.clock_name),
+ "%s", s);
+ }
+ }
+ if (this->props.n_pos > 0)
+ this->props.channels = this->props.n_pos;
+
+ spa_log_info(this->log, NAME " %p: initialized", 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, "Wim Taymans <wim.taymans@gmail.com>" },
+ { SPA_KEY_FACTORY_DESCRIPTION, "Consume audio samples" },
+};
+
+static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items);
+
+const struct spa_handle_factory spa_support_null_audio_sink_factory = {
+ SPA_VERSION_HANDLE_FACTORY,
+ "support.null-audio-sink",
+ &info,
+ impl_get_size,
+ impl_init,
+ impl_enum_interface_info,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-21 23:26:56 +0000