#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)
 
{
        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) {
 
                        break;
                }
                        continue;
                        continue;
 
                                             data->n_support)) < 0) {
                        printf(
"can't make factory instance: %d\n", 
res);
                }
                        printf(
"can't get interface %d\n", 
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;
}
 
        .ready = on_sink_ready,
        .reuse_buffer = on_sink_reuse_buffer
};
 
static int make_nodes(struct data *data, const char *device)
{
        uint8_t buffer[512];
        
 
        if ((
res = make_node(data, &data->sink,
 
                             "alsa/libspa-alsa.so",
                printf(
"can't create alsa-sink: %d\n", 
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);
        }
 
 
                printf(
"got set_props error %d\n", 
res);
 
                                     &data->ctrl, sizeof(data->ctrl))) < 0) {
                printf(
"can't set_io freq: %d\n", 
res);
        }
 
 
                             &data->source_sink_io[0], sizeof(data->source_sink_io[0]));
                             &data->source_sink_io[0], sizeof(data->source_sink_io[0]));
 
 
 
 
}
 
static int negotiate_formats(struct data *data)
{
        uint8_t buffer[4096];
 
                                .rate = 48000,
                                .channels = 2 ));
 
 
 
        init_buffer(data, data->source_buffers, data->source_buffer, 1, BUFFER_SIZE);
                     data->source_buffers, 1)) < 0)
                     data->source_buffers, 1)) < 0)
 
        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)
{
 
                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)
 
{
        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) {
 
                        break;
                }
                        continue;
                        continue;
 
                                                NULL, data->support,
                                                data->n_support)) < 0) {
                        printf(
"can't make factory instance: %d\n", 
res);
                }
                return 0;
        }
        return -EBADF;
}
 
static int init_data(struct data *data)
{
        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",
                printf(
"can't get System interface %d\n", 
res);
        }
        data->system = iface;
 
        
        if ((
res = load_handle(data, &handle,
 
                                        "support/libspa-support.so",
 
                printf(
"can't get interface %d\n", 
res);
        }
        data->loop = iface;
                printf(
"can't get interface %d\n", 
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 };
 
        if ((
res = init_data(&data)) < 0) {
 
                return -1;
        }
 
        if ((
res = make_nodes(&data, argc > 1 ? argv[1] : NULL)) < 0) {
 
                return -1;
        }
        if ((
res = negotiate_formats(&data)) < 0) {
 
                return -1;
        }
 
        run_async_sink(&data);
 
        return 0;
}
uint32_t int int res
Definition core.h:433
@ SPA_META_Header
struct spa_meta_header
Definition meta.h:37
@ SPA_DATA_MemPtr
pointer to memory, the data field in struct spa_data is set.
Definition buffer.h:43
@ SPA_CONTROL_Properties
SPA_TYPE_OBJECT_Props.
Definition control.h:32
SPA_API_DEBUG_POD int spa_debug_pod(int indent, const struct spa_type_info *info, const struct spa_pod *pod)
Definition pod.h:208
SPA_API_GRAPH void spa_graph_port_init(struct spa_graph_port *port, enum spa_direction direction, uint32_t port_id, uint32_t flags)
Definition graph.h:290
static const struct spa_graph_node_callbacks spa_graph_node_impl_default
Definition graph.h:353
SPA_API_GRAPH void spa_graph_node_init(struct spa_graph_node *node, struct spa_graph_state *state)
Definition graph.h:223
SPA_API_GRAPH void spa_graph_node_add(struct spa_graph *graph, struct spa_graph_node *node)
Definition graph.h:268
SPA_API_GRAPH void spa_graph_port_link(struct spa_graph_port *out, struct spa_graph_port *in)
Definition graph.h:317
SPA_API_GRAPH void spa_graph_port_add(struct spa_graph_node *node, struct spa_graph_port *port)
Definition graph.h:302
#define spa_graph_node_process(n)
Definition graph.h:130
SPA_API_GRAPH void spa_graph_node_set_callbacks(struct spa_graph_node *node, const struct spa_graph_node_callbacks *callbacks, void *data)
Definition graph.h:260
SPA_API_GRAPH void spa_graph_init(struct spa_graph *graph, struct spa_graph_state *state)
Definition graph.h:196
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:222
#define SPA_HANDLE_FACTORY_ENUM_FUNC_NAME
Definition plugin.h:226
SPA_API_PLUGIN size_t spa_handle_factory_get_size(const struct spa_handle_factory *object, const struct spa_dict *params)
Definition plugin.h:192
SPA_API_PLUGIN int spa_handle_get_interface(struct spa_handle *object, const char *type, void **iface)
Definition plugin.h:74
#define SPA_SUPPORT_INIT(type, data)
Definition plugin.h:117
SPA_API_PLUGIN int spa_handle_factory_init(const struct spa_handle_factory *object, struct spa_handle *handle, const struct spa_dict *info, const struct spa_support *support, uint32_t n_support)
Definition plugin.h:198
#define SPA_LOG_IMPL(name)
Definition log-impl.h:119
#define SPA_TYPE_INTERFACE_Log
The Log interface.
Definition log.h:68
SPA_API_LOOP void spa_loop_control_enter(struct spa_loop_control *object)
Definition loop.h:313
#define SPA_TYPE_INTERFACE_DataLoop
Definition loop.h:45
#define SPA_TYPE_INTERFACE_Loop
Definition loop.h:43
SPA_API_LOOP int spa_loop_control_iterate(struct spa_loop_control *object, int timeout)
Definition loop.h:321
#define SPA_TYPE_INTERFACE_LoopControl
Definition loop.h:51
SPA_API_LOOP void spa_loop_control_leave(struct spa_loop_control *object)
Definition loop.h:317
#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:112
SPA_API_NODE int spa_node_port_set_param(struct spa_node *object, enum spa_direction direction, uint32_t port_id, uint32_t id, uint32_t flags, const struct spa_pod *param)
Definition node.h:780
#define SPA_TYPE_INTERFACE_Node
Definition node.h:47
#define SPA_VERSION_NODE_CALLBACKS
Definition node.h:244
SPA_API_NODE int spa_node_port_set_io(struct spa_node *object, enum spa_direction direction, uint32_t port_id, uint32_t id, void *data, size_t size)
Definition node.h:799
SPA_API_NODE int spa_node_set_param(struct spa_node *object, uint32_t id, uint32_t flags, const struct spa_pod *param)
Definition node.h:740
SPA_API_NODE int spa_node_port_use_buffers(struct spa_node *object, enum spa_direction direction, uint32_t port_id, uint32_t flags, struct spa_buffer **buffers, uint32_t n_buffers)
Definition node.h:789
SPA_API_NODE int spa_node_send_command(struct spa_node *object, const struct spa_command *command)
Definition node.h:753
#define SPA_IO_BUFFERS_INIT
Definition io.h:96
SPA_API_NODE int spa_node_set_callbacks(struct spa_node *object, const struct spa_node_callbacks *callbacks, void *data)
Definition node.h:721
#define SPA_NODE_COMMAND_INIT(id)
Definition command.h:49
@ 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
#define SPA_AUDIO_INFO_RAW_INIT(...)
Definition raw.h:291
SPA_API_AUDIO_RAW_UTILS 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:57
@ 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:92
SPA_API_POD_BUILDER void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition builder.h:187
#define SPA_POD_String(val)
Definition vararg.h:94
#define SPA_POD_Bool(val)
Definition vararg.h:44
SPA_API_POD_BUILDER int spa_pod_builder_control(struct spa_pod_builder *builder, uint32_t offset, uint32_t type)
Definition builder.h:515
SPA_API_POD_BUILDER 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:479
SPA_API_POD_BUILDER void spa_pod_builder_init(struct spa_pod_builder *builder, void *data, uint32_t size)
Definition builder.h:97
#define spa_pod_builder_add_object(b, type, id,...)
Definition builder.h:703
#define SPA_POD_Float(val)
Definition vararg.h:76
SPA_API_POD_BUILDER int spa_pod_builder_float(struct spa_pod_builder *builder, float val)
Definition builder.h:284
SPA_API_POD_BUILDER int spa_pod_builder_push_sequence(struct spa_pod_builder *builder, struct spa_pod_frame *frame, uint32_t unit)
Definition builder.h:504
#define SPA_POD_Int(val)
Definition vararg.h:54
SPA_API_POD_BUILDER int spa_pod_builder_prop(struct spa_pod_builder *builder, uint32_t key, uint32_t flags)
Definition builder.h:494
SPA_API_RESULT const char * spa_strerror(int err)
Definition result.h:61
SPA_API_STRING bool spa_streq(const char *s1, const char *s2)
Definition string.h:51
#define SPA_TYPE_INTERFACE_System
a collection of core system functions
Definition system.h:50
#define SPA_TYPE_INTERFACE_DataSystem
Definition system.h:52
@ SPA_TYPE_OBJECT_Props
Definition type.h:86
#define spa_aprintf(_fmt,...)
Definition defs.h:528
@ SPA_DIRECTION_INPUT
Definition defs.h:107
@ SPA_DIRECTION_OUTPUT
Definition defs.h:108
A Buffer.
Definition buffer.h:110
Chunk of memory, can change for each buffer.
Definition buffer.h:59
Data for a buffer this stays constant for a buffer.
Definition buffer.h:78
uint32_t version
Definition plugin.h:123
IO area to exchange buffers.
Definition io.h:80
Node callbacks.
Definition node.h:242
struct spa_pod pod
Definition iter.h:38
Extra supporting infrastructure passed to the init() function of a factory.
Definition plugin.h:98