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-rw-r--r--spa/plugins/volume/volume.c894
1 files changed, 894 insertions, 0 deletions
diff --git a/spa/plugins/volume/volume.c b/spa/plugins/volume/volume.c
new file mode 100644
index 0000000..6323766
--- /dev/null
+++ b/spa/plugins/volume/volume.c
@@ -0,0 +1,894 @@
+/* Spa
+ *
+ * Copyright © 2018 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 <string.h>
+#include <stddef.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/log.h>
+#include <spa/utils/list.h>
+#include <spa/utils/string.h>
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/param/param.h>
+#include <spa/pod/filter.h>
+
+#define NAME "volume"
+
+#define DEFAULT_RATE 48000
+#define DEFAULT_CHANNELS 2
+
+#define DEFAULT_VOLUME 1.0
+#define DEFAULT_MUTE false
+
+struct props {
+ double volume;
+ bool mute;
+};
+
+static void reset_props(struct props *props)
+{
+ props->volume = DEFAULT_VOLUME;
+ props->mute = DEFAULT_MUTE;
+}
+
+#define MAX_BUFFERS 16
+
+struct buffer {
+ uint32_t id;
+#define BUFFER_FLAG_OUT (1<<0)
+ uint32_t flags;
+ struct spa_buffer *outbuf;
+ struct spa_meta_header *h;
+ void *ptr;
+ size_t size;
+ struct spa_list link;
+};
+
+struct port {
+ enum spa_direction direction;
+ uint32_t id;
+
+ bool have_format;
+
+ uint64_t info_all;
+ struct spa_port_info info;
+ struct spa_param_info params[5];
+
+ struct buffer buffers[MAX_BUFFERS];
+ uint32_t n_buffers;
+
+ struct spa_io_buffers *io;
+
+ struct spa_list empty;
+};
+
+struct impl {
+ struct spa_handle handle;
+ struct spa_node node;
+
+ struct spa_log *log;
+ uint32_t quantum_limit;
+
+ uint64_t info_all;
+ struct spa_node_info info;
+ struct spa_param_info params[5];
+ struct props props;
+
+ struct spa_hook_list hooks;
+
+ struct spa_audio_info current_format;
+ int bpf;
+
+ struct port in_ports[1];
+ struct port out_ports[1];
+
+ bool started;
+};
+
+#define CHECK_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) == 0)
+#define CHECK_OUT_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0)
+#define CHECK_PORT(this,d,p) ((p) == 0)
+#define GET_IN_PORT(this,p) (&this->in_ports[p])
+#define GET_OUT_PORT(this,p) (&this->out_ports[p])
+#define GET_PORT(this,d,p) (d == SPA_DIRECTION_INPUT ? GET_IN_PORT(this,p) : GET_OUT_PORT(this,p))
+
+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_builder b = { 0 };
+ uint8_t buffer[1024];
+ struct spa_pod *param;
+ struct props *p;
+ 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);
+
+ p = &this->props;
+
+ 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) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_PropInfo, id,
+ SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_volume),
+ SPA_PROP_INFO_description, SPA_POD_String("The volume"),
+ SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Float(p->volume, 0.0, 10.0));
+ break;
+ case 1:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_PropInfo, id,
+ SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_mute),
+ SPA_PROP_INFO_description, SPA_POD_String("Mute"),
+ SPA_PROP_INFO_type, SPA_POD_Bool(p->mute));
+ break;
+ 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,
+ SPA_PROP_volume, SPA_POD_Float(p->volume),
+ SPA_PROP_mute, SPA_POD_Bool(p->mute));
+ 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)
+{
+ return -ENOTSUP;
+}
+
+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:
+ {
+ struct props *p = &this->props;
+
+ if (param == NULL) {
+ reset_props(p);
+ return 0;
+ }
+ spa_pod_parse_object(param,
+ SPA_TYPE_OBJECT_Props, NULL,
+ SPA_PROP_volume, SPA_POD_OPT_Float(&p->volume),
+ SPA_PROP_mute, SPA_POD_OPT_Bool(&p->mute));
+ break;
+ }
+ default:
+ return -ENOENT;
+ }
+
+ return 0;
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(command != NULL, -EINVAL);
+
+ switch (SPA_NODE_COMMAND_ID(command)) {
+ case SPA_NODE_COMMAND_Start:
+ this->started = true;
+ break;
+ case SPA_NODE_COMMAND_Pause:
+ this->started = false;
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+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) {
+ 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,
+ port->direction, port->id, &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, GET_IN_PORT(this, 0), true);
+ emit_port_info(this, GET_OUT_PORT(this, 0), 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)
+{
+ 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 port_enum_formats(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t index,
+ const struct spa_pod *filter,
+ struct spa_pod **param,
+ struct spa_pod_builder *builder)
+{
+ switch (index) {
+ case 0:
+ *param = spa_pod_builder_add_object(builder,
+ SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
+ 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(2,
+ SPA_AUDIO_FORMAT_S16,
+ SPA_AUDIO_FORMAT_S16),
+ SPA_FORMAT_AUDIO_rate, SPA_POD_CHOICE_RANGE_Int(
+ DEFAULT_RATE, 1, INT32_MAX),
+ SPA_FORMAT_AUDIO_channels, SPA_POD_CHOICE_RANGE_Int(
+ DEFAULT_CHANNELS, 1, INT32_MAX));
+ 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 = GET_PORT(this, direction, port_id);
+
+ 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, filter, &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, &this->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 * this->bpf,
+ 16 * this->bpf,
+ INT32_MAX),
+ SPA_PARAM_BUFFERS_stride, SPA_POD_Int(this->bpf));
+ 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;
+ 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_debug(this->log, NAME " %p: clear buffers", this);
+ port->n_buffers = 0;
+ spa_list_init(&port->empty);
+ }
+ return 0;
+}
+
+static int port_set_format(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t flags,
+ const struct spa_pod *format)
+{
+ struct impl *this = object;
+ struct port *port;
+ int res;
+
+ port = GET_PORT(this, direction, port_id);
+
+ 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.format != SPA_AUDIO_FORMAT_S16 ||
+ info.info.raw.channels == 0 ||
+ info.info.raw.channels > SPA_AUDIO_MAX_CHANNELS)
+ return -EINVAL;
+
+ this->bpf = 2 * info.info.raw.channels;
+ this->current_format = info;
+ port->have_format = true;
+ }
+
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+ if (port->have_format) {
+ 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)
+{
+ spa_return_val_if_fail(object != NULL, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(object, direction, port_id), -EINVAL);
+
+ if (id == SPA_PARAM_Format) {
+ return port_set_format(object, direction, port_id, flags, param);
+ }
+ else
+ return -ENOENT;
+}
+
+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 = GET_PORT(this, direction, port_id);
+
+ 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->outbuf = buffers[i];
+ b->flags = direction == SPA_DIRECTION_INPUT ? BUFFER_FLAG_OUT : 0;
+ b->h = spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h));
+
+ if (d[0].data == NULL) {
+ b->ptr = d[0].data;
+ b->size = d[0].maxsize;
+ } else {
+ spa_log_error(this->log, NAME " %p: invalid memory on buffer %p", this,
+ buffers[i]);
+ return -EINVAL;
+ }
+ if (!SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_OUT))
+ spa_list_append(&port->empty, &b->link);
+ }
+ 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 = GET_PORT(this, direction, port_id);
+
+ switch (id) {
+ case SPA_IO_Buffers:
+ port->io = data;
+ break;
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+static void recycle_buffer(struct impl *this, uint32_t id)
+{
+ struct port *port = GET_OUT_PORT(this, 0);
+ struct buffer *b = &port->buffers[id];
+
+ if (!SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_OUT)) {
+ spa_log_warn(this->log, NAME " %p: buffer %d not outstanding", this, id);
+ return;
+ }
+
+ spa_list_append(&port->empty, &b->link);
+ SPA_FLAG_CLEAR(b->flags, BUFFER_FLAG_OUT);
+ spa_log_trace(this->log, NAME " %p: recycle buffer %d", this, id);
+}
+
+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(CHECK_PORT(this, SPA_DIRECTION_OUTPUT, port_id),
+ -EINVAL);
+
+ port = GET_OUT_PORT(this, port_id);
+
+ if (buffer_id >= port->n_buffers)
+ return -EINVAL;
+
+ recycle_buffer(this, buffer_id);
+
+ return 0;
+}
+
+static struct buffer *find_free_buffer(struct impl *this, struct port *port)
+{
+ struct buffer *b;
+
+ if (spa_list_is_empty(&port->empty))
+ return NULL;
+
+ b = spa_list_first(&port->empty, struct buffer, link);
+ spa_list_remove(&b->link);
+ SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUT);
+
+ return b;
+}
+
+static void do_volume(struct impl *this, struct spa_buffer *dbuf, struct spa_buffer *sbuf)
+{
+ uint32_t i, n_samples, n_bytes;
+ struct spa_data *sd, *dd;
+ int16_t *src, *dst;
+ double volume;
+ uint32_t written, towrite, savail, davail;
+ uint32_t sindex, dindex;
+
+ volume = this->props.volume;
+
+ sd = sbuf->datas;
+ dd = dbuf->datas;
+
+ savail = SPA_MIN(sd[0].chunk->size, sd[0].maxsize);
+ sindex = sd[0].chunk->offset;
+ davail = 0;
+ dindex = 0;
+ davail = dd[0].maxsize - davail;
+
+ towrite = SPA_MIN(savail, davail);
+ written = 0;
+
+ while (written < towrite) {
+ uint32_t soffset = sindex % sd[0].maxsize;
+ uint32_t doffset = dindex % dd[0].maxsize;
+
+ src = SPA_PTROFF(sd[0].data, soffset, int16_t);
+ dst = SPA_PTROFF(dd[0].data, doffset, int16_t);
+
+ n_bytes = SPA_MIN(towrite, sd[0].maxsize - soffset);
+ n_bytes = SPA_MIN(n_bytes, dd[0].maxsize - doffset);
+
+ n_samples = n_bytes / sizeof(int16_t);
+ for (i = 0; i < n_samples; i++)
+ dst[i] = src[i] * volume;
+
+ sindex += n_bytes;
+ dindex += n_bytes;
+ written += n_bytes;
+ }
+ dd[0].chunk->offset = 0;
+ dd[0].chunk->size = written;
+ dd[0].chunk->stride = 0;
+}
+
+static int impl_node_process(void *object)
+{
+ struct impl *this = object;
+ struct port *in_port, *out_port;
+ struct spa_io_buffers *input, *output;
+ struct buffer *dbuf, *sbuf;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ out_port = GET_OUT_PORT(this, 0);
+ if ((output = out_port->io) == NULL)
+ return -EIO;
+
+ if (output->status == SPA_STATUS_HAVE_DATA)
+ return SPA_STATUS_HAVE_DATA;
+
+ /* recycle */
+ if (output->buffer_id < out_port->n_buffers) {
+ recycle_buffer(this, output->buffer_id);
+ output->buffer_id = SPA_ID_INVALID;
+ }
+
+ in_port = GET_IN_PORT(this, 0);
+ if ((input = in_port->io) == NULL)
+ return -EIO;
+
+ if (input->status != SPA_STATUS_HAVE_DATA)
+ return SPA_STATUS_NEED_DATA;
+
+ if (input->buffer_id >= in_port->n_buffers) {
+ input->status = -EINVAL;
+ return -EINVAL;
+ }
+
+ if ((dbuf = find_free_buffer(this, out_port)) == NULL) {
+ spa_log_error(this->log, NAME " %p: out of buffers", this);
+ return -EPIPE;
+ }
+
+ sbuf = &in_port->buffers[input->buffer_id];
+
+ spa_log_trace(this->log, NAME " %p: do volume %d -> %d", this, sbuf->id, dbuf->id);
+ do_volume(this, dbuf->outbuf, sbuf->outbuf);
+
+ output->buffer_id = dbuf->id;
+ output->status = SPA_STATUS_HAVE_DATA;
+
+ input->status = SPA_STATUS_NEED_DATA;
+
+ 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_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 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)
+{
+ 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;
+ 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);
+
+ 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);
+ }
+
+ 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_PARAMS;
+ this->info = SPA_NODE_INFO_INIT();
+ this->info.max_input_ports = 1;
+ this->info.max_output_ports = 1;
+ 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->info.params = this->params;
+ this->info.n_params = 2;
+ reset_props(&this->props);
+
+ port = GET_IN_PORT(this, 0);
+ port->direction = SPA_DIRECTION_INPUT;
+ port->id = 0;
+ 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_IN_PLACE;
+ 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;
+ spa_list_init(&port->empty);
+
+ port = GET_OUT_PORT(this, 0);
+ port->direction = SPA_DIRECTION_OUTPUT;
+ port->id = 0;
+ 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;
+ 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;
+ spa_list_init(&port->empty);
+
+ 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;
+}
+
+const struct spa_handle_factory spa_volume_factory = {
+ SPA_VERSION_HANDLE_FACTORY,
+ NAME,
+ NULL,
+ impl_get_size,
+ impl_init,
+ impl_enum_interface_info,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-22 23:21:07 +0000