#include "config.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <dlfcn.h>
#include <errno.h>
#include <pthread.h>
#include <poll.h>
#define M_PI_M2 ( M_PI + M_PI )
#define spa_debug(f,...) spa_log_trace(&default_log.log, f, __VA_ARGS__)
struct buffer {
};
struct data {
const char *plugin_dir;
uint32_t n_support;
struct buffer source_buffer[1];
uint8_t ctrl[1024];
double freq_accum;
double volume_accum;
bool running;
pthread_t thread;
};
#define MIN_LATENCY 1024
#define BUFFER_SIZE 4096
static void
init_buffer(
struct data *data,
struct spa_buffer **bufs,
struct buffer *ba,
int n_buffers,
size_t size)
{
int i;
for (i = 0; i < n_buffers; i++) {
struct buffer *b = &ba[i];
bufs[i] = &b->buffer;
b->buffer.metas = b->metas;
b->buffer.n_metas = 1;
b->buffer.datas = b->datas;
b->buffer.n_datas = 1;
b->header.seq = 0;
b->header.pts = 0;
b->header.dts_offset = 0;
b->metas[0].data = &b->header;
b->metas[0].size = sizeof(b->header);
b->datas[0].flags = 0;
b->datas[0].fd = -1;
b->datas[0].mapoffset = 0;
b->datas[0].maxsize = size;
b->datas[0].data = malloc(size);
b->datas[0].chunk = &b->chunks[0];
b->datas[0].chunk->offset = 0;
b->datas[0].chunk->size = 0;
b->datas[0].chunk->stride = 0;
}
}
static int make_node(
struct data *data,
struct spa_node **node,
const char *lib,
const char *name)
{
int res;
void *hnd;
uint32_t i;
char *path;
if ((path =
spa_aprintf(
"%s/%s", data->plugin_dir, lib)) == NULL) {
return -ENOMEM;
}
if ((hnd = dlopen(path, RTLD_NOW)) == NULL) {
printf("can't load %s: %s\n", lib, dlerror());
free(path);
return -ENOENT;
}
free(path);
printf("can't find enum function\n");
return -ENOENT;
}
for (i = 0;;) {
void *iface;
if ((res = enum_func(&factory, &i)) <= 0) {
if (res != 0)
printf(
"can't enumerate factories: %s\n",
spa_strerror(res));
break;
}
continue;
continue;
if ((res =
data->n_support)) < 0) {
printf("can't make factory instance: %d\n", res);
return res;
}
printf("can't get interface %d\n", res);
return res;
}
*node = iface;
return 0;
}
return -EBADF;
}
static void update_props(struct data *data)
{
#if 0
#else
#endif
data->freq_accum += M_PI_M2 / 880.0;
if (data->freq_accum >= M_PI_M2)
data->freq_accum -= M_PI_M2;
data->volume_accum += M_PI_M2 / 2000.0;
if (data->volume_accum >= M_PI_M2)
data->volume_accum -= M_PI_M2;
}
static int on_sink_ready(void *_data, int status)
{
struct data *data = _data;
update_props(data);
return 0;
}
static int
on_sink_reuse_buffer(void *_data, uint32_t port_id, uint32_t buffer_id)
{
struct data *data = _data;
data->source_sink_io[0].buffer_id = buffer_id;
return 0;
}
.reuse_buffer = on_sink_reuse_buffer
};
static int make_nodes(struct data *data, const char *device)
{
int res;
uint8_t buffer[512];
if ((res = make_node(data, &data->sink,
"alsa/libspa-alsa.so",
printf("can't create alsa-sink: %d\n", res);
return res;
}
printf("got set_props error %d\n", res);
if ((res = make_node(data, &data->source,
"audiotestsrc/libspa-audiotestsrc.so",
"audiotestsrc")) < 0) {
printf("can't create audiotestsrc: %d\n", res);
return res;
}
printf("got set_props error %d\n", res);
&data->ctrl, sizeof(data->ctrl))) < 0) {
printf("can't set_io freq: %d\n", res);
return res;
}
&data->source_sink_io[0], sizeof(data->source_sink_io[0]));
&data->source_sink_io[0], sizeof(data->source_sink_io[0]));
return res;
}
static int negotiate_formats(struct data *data)
{
int res;
uint8_t buffer[4096];
.rate = 48000,
.channels = 2 ));
return res;
return res;
init_buffer(data, data->source_buffers, data->source_buffer, 1, BUFFER_SIZE);
if ((res =
data->source_buffers, 1)) < 0)
return res;
if ((res =
data->source_buffers, 1)) < 0)
return res;
return 0;
}
static void *loop(void *user_data)
{
struct data *data = user_data;
printf("enter thread\n");
while (data->running) {
}
printf("leave thread\n");
return NULL;
}
static void run_async_sink(struct data *data)
{
int res, err;
printf("got error %d\n", res);
data->running = true;
if ((err = pthread_create(&data->thread, NULL, loop, data)) != 0) {
printf("can't create thread: %d %s", err, strerror(err));
data->running = false;
}
printf("sleeping for 1000 seconds\n");
sleep(1000);
if (data->running) {
data->running = false;
pthread_join(data->thread, NULL);
}
printf("got error %d\n", res);
}
static int load_handle(
struct data *data,
struct spa_handle **handle,
const char *lib,
const char *name)
{
int res;
void *hnd;
uint32_t i;
char *path;
if ((path =
spa_aprintf(
"%s/%s", data->plugin_dir, lib)) == NULL) {
return -ENOMEM;
}
if ((hnd = dlopen(path, RTLD_NOW)) == NULL) {
printf("can't load %s: %s\n", lib, dlerror());
free(path);
return -ENOENT;
}
free(path);
printf("can't find enum function\n");
return -ENOENT;
}
for (i = 0;;) {
if ((res = enum_func(&factory, &i)) <= 0) {
if (res != 0)
printf(
"can't enumerate factories: %s\n",
spa_strerror(res));
break;
}
continue;
continue;
NULL, data->support,
data->n_support)) < 0) {
printf("can't make factory instance: %d\n", res);
return res;
}
return 0;
}
return -EBADF;
}
static int init_data(struct data *data)
{
int res;
const char *str;
void *iface;
if ((str = getenv("SPA_PLUGIN_DIR")) == NULL)
str = PLUGINDIR;
data->plugin_dir = str;
data->log = &default_log.log;
if ((res = load_handle(data, &handle,
"support/libspa-support.so",
return res;
printf("can't get System interface %d\n", res);
return res;
}
data->system = iface;
if ((res = load_handle(data, &handle,
"support/libspa-support.so",
return res;
printf("can't get interface %d\n", res);
return res;
}
data->loop = iface;
printf("can't get interface %d\n", res);
return res;
}
data->control = iface;
if ((str = getenv("SPA_DEBUG")))
data->log->level = atoi(str);
return 0;
}
int main(int argc, char *argv[])
{
struct data data = { NULL };
int res;
if ((res = init_data(&data)) < 0) {
printf(
"can't init data: %d (%s)\n", res,
spa_strerror(res));
return -1;
}
if ((res = make_nodes(&data, argc > 1 ? argv[1] : NULL)) < 0) {
printf(
"can't make nodes: %d (%s)\n", res,
spa_strerror(res));
return -1;
}
if ((res = negotiate_formats(&data)) < 0) {
printf(
"can't negotiate nodes: %d (%s)\n", res,
spa_strerror(res));
return -1;
}
run_async_sink(&data);
return 0;
}
@ SPA_META_Header
struct spa_meta_header
Definition meta.h:27
@ SPA_DATA_MemPtr
pointer to memory, the data field in struct spa_data is set.
Definition buffer.h:33
@ SPA_CONTROL_Properties
data contains a SPA_TYPE_OBJECT_Props
Definition control.h:32
static int spa_debug_pod(int indent, const struct spa_type_info *info, const struct spa_pod *pod)
Definition pod.h:198
static void spa_graph_node_set_callbacks(struct spa_graph_node *node, const struct spa_graph_node_callbacks *callbacks, void *data)
Definition graph.h:249
static const struct spa_graph_node_callbacks spa_graph_node_impl_default
Definition graph.h:342
static void spa_graph_init(struct spa_graph *graph, struct spa_graph_state *state)
Definition graph.h:185
static void spa_graph_node_add(struct spa_graph *graph, struct spa_graph_node *node)
Definition graph.h:257
static void spa_graph_node_init(struct spa_graph_node *node, struct spa_graph_state *state)
Definition graph.h:212
static void spa_graph_port_init(struct spa_graph_port *port, enum spa_direction direction, uint32_t port_id, uint32_t flags)
Definition graph.h:279
static void spa_graph_port_add(struct spa_graph_node *node, struct spa_graph_port *port)
Definition graph.h:291
static void spa_graph_port_link(struct spa_graph_port *out, struct spa_graph_port *in)
Definition graph.h:306
#define spa_graph_node_process(n)
Definition graph.h:119
int(* spa_handle_factory_enum_func_t)(const struct spa_handle_factory **factory, uint32_t *index)
The function signature of the entry point in a plugin.
Definition plugin.h:182
#define SPA_HANDLE_FACTORY_ENUM_FUNC_NAME
Definition plugin.h:186
#define SPA_SUPPORT_INIT(type, data)
Definition plugin.h:95
#define spa_handle_factory_init(h,...)
Definition plugin.h:170
#define spa_handle_get_interface(h,...)
Definition plugin.h:60
#define spa_handle_factory_get_size(h,...)
Definition plugin.h:169
#define SPA_LOG_IMPL(name)
Definition log-impl.h:119
#define SPA_TYPE_INTERFACE_Log
The Log interface.
Definition log.h:58
#define spa_loop_control_enter(l)
Enter a loop.
Definition loop.h:292
#define spa_loop_control_leave(l)
Leave a loop.
Definition loop.h:295
#define spa_loop_control_iterate(l,...)
Perform one iteration of the loop.
Definition loop.h:298
#define SPA_TYPE_INTERFACE_DataLoop
Definition loop.h:33
#define SPA_TYPE_INTERFACE_Loop
Definition loop.h:31
#define SPA_TYPE_INTERFACE_LoopControl
Definition loop.h:39
#define SPA_NAME_SUPPORT_LOOP
A Loop/LoopControl/LoopUtils interface.
Definition names.h:34
#define SPA_NAME_SUPPORT_SYSTEM
A System interface.
Definition names.h:37
#define SPA_NAME_API_ALSA_PCM_SINK
an alsa Node interface for playback PCM
Definition names.h:109
#define SPA_TYPE_INTERFACE_Node
Definition node.h:37
#define SPA_VERSION_NODE_CALLBACKS
Definition node.h:234
#define spa_node_port_set_io(n,...)
Configure the given memory area with id on port_id.
Definition node.h:758
#define spa_node_set_param(n,...)
Set the configurable parameter in node.
Definition node.h:734
#define spa_node_port_set_param(n,...)
Set a parameter on port_id of node.
Definition node.h:752
#define spa_node_send_command(n,...)
Send a command to a node.
Definition node.h:740
#define SPA_IO_BUFFERS_INIT
Definition io.h:96
#define SPA_NODE_COMMAND_INIT(id)
Definition command.h:49
#define spa_node_port_use_buffers(n,...)
Tell the port to use the given buffers.
Definition node.h:755
#define spa_node_set_callbacks(n,...)
Set callbacks to on node.
Definition node.h:725
@ SPA_IO_Control
area for control messages, struct spa_io_sequence
Definition io.h:43
@ SPA_IO_Buffers
area to exchange buffers, struct spa_io_buffers
Definition io.h:38
@ SPA_NODE_COMMAND_Pause
pause a node.
Definition command.h:28
@ SPA_NODE_COMMAND_Start
start a node, this makes it start emitting scheduling events
Definition command.h:30
static struct spa_pod * spa_format_audio_raw_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_audio_info_raw *info)
Definition raw-utils.h:47
#define SPA_AUDIO_INFO_RAW_INIT(...)
Definition raw.h:293
@ SPA_PROP_minLatency
Definition props.h:53
@ SPA_PROP_device
Definition props.h:47
@ SPA_PROP_live
Definition props.h:58
@ SPA_PROP_volume
a volume (Float), 0.0 silence, 1.0 no attenutation
Definition props.h:67
@ SPA_PROP_frequency
Definition props.h:66
@ SPA_PARAM_Format
configured format as SPA_TYPE_OBJECT_Format
Definition param.h:34
@ SPA_PARAM_Props
properties as SPA_TYPE_OBJECT_Props
Definition param.h:32
@ SPA_AUDIO_FORMAT_S16
Definition raw.h:94
static int spa_pod_builder_prop(struct spa_pod_builder *builder, uint32_t key, uint32_t flags)
Definition builder.h:450
#define SPA_POD_String(val)
Definition vararg.h:94
#define SPA_POD_Bool(val)
Definition vararg.h:44
static int spa_pod_builder_float(struct spa_pod_builder *builder, float val)
Definition builder.h:265
static int spa_pod_builder_push_sequence(struct spa_pod_builder *builder, struct spa_pod_frame *frame, uint32_t unit)
Definition builder.h:460
static void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition builder.h:168
static int spa_pod_builder_control(struct spa_pod_builder *builder, uint32_t offset, uint32_t type)
Definition builder.h:471
#define spa_pod_builder_add_object(b, type, id,...)
Definition builder.h:659
#define SPA_POD_Float(val)
Definition vararg.h:76
static void spa_pod_builder_init(struct spa_pod_builder *builder, void *data, uint32_t size)
Definition builder.h:87
static int spa_pod_builder_push_object(struct spa_pod_builder *builder, struct spa_pod_frame *frame, uint32_t type, uint32_t id)
Definition builder.h:435
#define SPA_POD_Int(val)
Definition vararg.h:54
#define spa_strerror(err)
Definition result.h:49
static bool spa_streq(const char *s1, const char *s2)
Definition string.h:41
#define SPA_TYPE_INTERFACE_System
a collection of core system functions
Definition system.h:39
#define SPA_TYPE_INTERFACE_DataSystem
Definition system.h:41
@ SPA_TYPE_OBJECT_Props
Definition type.h:75
#define spa_aprintf(_fmt,...)
Definition defs.h:503
@ SPA_DIRECTION_INPUT
Definition defs.h:107
@ SPA_DIRECTION_OUTPUT
Definition defs.h:108
A Buffer.
Definition buffer.h:100
Chunk of memory, can change for each buffer.
Definition buffer.h:49
Data for a buffer this stays constant for a buffer.
Definition buffer.h:68
uint32_t version
Definition plugin.h:101
IO area to exchange buffers.
Definition io.h:80
Node callbacks.
Definition node.h:232
int(* ready)(void *data, int state)
Definition node.h:244
struct spa_pod pod
Definition iter.h:28
Extra supporting infrastructure passed to the init() function of a factory.
Definition plugin.h:76