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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-31 22:25:38 -04:00
filter-chain: simplify the plugin API
This commit is contained in:
Wim Taymans
parent
85dd03c2d8
commit
48136b4c2b
2 changed files with 53 additions and 78 deletions
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@ -36,20 +36,22 @@
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#include "ladspa.h"
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struct plugin_data {
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struct plugin {
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struct fc_plugin plugin;
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void *handle;
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LADSPA_Descriptor_Function desc_func;
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};
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struct desc_data {
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struct descriptor {
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struct fc_descriptor desc;
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const LADSPA_Descriptor *d;
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};
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static void *ladspa_instantiate(const struct fc_descriptor *desc,
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unsigned long SampleRate, const char *config)
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{
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struct desc_data *dd = desc->user;
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return dd->d->instantiate(dd->d, SampleRate);
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struct descriptor *d = (struct descriptor *)desc;
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return d->d->instantiate(d->d, SampleRate);
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}
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static const LADSPA_Descriptor *find_desc(LADSPA_Descriptor_Function desc_func, const char *name)
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@ -65,11 +67,6 @@ static const LADSPA_Descriptor *find_desc(LADSPA_Descriptor_Function desc_func,
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return NULL;
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}
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static void ladspa_free(struct fc_descriptor *desc)
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{
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free(desc->ports);
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}
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static const char *ladspa_get_prop(struct fc_descriptor *desc, const char *name)
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{
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return NULL;
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@ -131,8 +128,7 @@ static float get_default(struct fc_port *port, LADSPA_PortRangeHintDescriptor hi
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static float ladspa_port_get_param(struct fc_port *port, const char *name)
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{
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struct fc_descriptor *desc = port->desc;
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struct desc_data *dd = desc->user;
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struct descriptor *dd = (struct descriptor*)port->desc;
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const LADSPA_Descriptor *d = dd->d;
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unsigned long p = port->index;
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LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
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@ -158,68 +154,71 @@ static float ladspa_port_get_param(struct fc_port *port, const char *name)
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return 0.0f;
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}
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static void ladspa_free(struct fc_descriptor *desc)
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{
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struct descriptor *d = (struct descriptor*)desc;
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free(d->desc.ports);
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free(d);
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}
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static const struct fc_descriptor *ladspa_make_desc(struct fc_plugin *plugin, const char *name)
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{
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struct plugin_data *pd = plugin->user;
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struct fc_descriptor *desc;
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struct desc_data *dd;
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struct plugin *p = (struct plugin *)plugin;
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struct descriptor *desc;
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const LADSPA_Descriptor *d;
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uint32_t i;
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d = find_desc(pd->desc_func, name);
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d = find_desc(p->desc_func, name);
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if (d == NULL)
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return NULL;
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desc = fc_descriptor_new(plugin, sizeof(*dd));
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dd = desc->user;
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dd->d = d;
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desc = calloc(1, sizeof(*desc));
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desc->d = d;
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desc->instantiate = ladspa_instantiate;
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desc->cleanup = d->cleanup;
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desc->connect_port = d->connect_port;
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desc->activate = d->activate;
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desc->deactivate = d->deactivate;
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desc->run = d->run;
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desc->desc.instantiate = ladspa_instantiate;
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desc->desc.cleanup = d->cleanup;
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desc->desc.connect_port = d->connect_port;
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desc->desc.activate = d->activate;
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desc->desc.deactivate = d->deactivate;
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desc->desc.run = d->run;
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desc->free = ladspa_free;
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desc->get_prop = ladspa_get_prop;
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desc->desc.free = ladspa_free;
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desc->desc.get_prop = ladspa_get_prop;
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desc->name = d->Label;
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desc->flags = d->Properties;
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desc->desc.name = d->Label;
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desc->desc.flags = d->Properties;
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desc->n_ports = d->PortCount;
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desc->ports = calloc(desc->n_ports, sizeof(struct fc_port));
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desc->desc.n_ports = d->PortCount;
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desc->desc.ports = calloc(desc->desc.n_ports, sizeof(struct fc_port));
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for (i = 0; i < desc->n_ports; i++) {
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desc->ports[i].index = i;
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desc->ports[i].name = d->PortNames[i];
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desc->ports[i].flags = d->PortDescriptors[i];
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desc->ports[i].get_param = ladspa_port_get_param;
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for (i = 0; i < desc->desc.n_ports; i++) {
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desc->desc.ports[i].index = i;
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desc->desc.ports[i].name = d->PortNames[i];
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desc->desc.ports[i].flags = d->PortDescriptors[i];
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desc->desc.ports[i].get_param = ladspa_port_get_param;
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}
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return desc;
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return &desc->desc;
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}
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static void ladspa_unload(struct fc_plugin *plugin)
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{
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struct plugin_data *pd = plugin->user;
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if (pd->handle)
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dlclose(pd->handle);
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struct plugin *p = (struct plugin *)plugin;
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if (p->handle)
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dlclose(p->handle);
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free(p);
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}
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static struct fc_plugin *ladspa_handle_load_by_path(const char *path)
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{
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struct fc_plugin *plugin;
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struct plugin_data *pd;
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struct plugin *p;
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int res;
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plugin = fc_plugin_new(sizeof(*pd));
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if (!plugin)
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p = calloc(1, sizeof(*p));
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if (!p)
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return NULL;
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pd = plugin->user;
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pd->handle = dlopen(path, RTLD_NOW);
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if (!pd->handle) {
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p->handle = dlopen(path, RTLD_NOW);
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if (!p->handle) {
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pw_log_debug("failed to open '%s': %s", path, dlerror());
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res = -ENOENT;
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goto exit;
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@ -227,20 +226,20 @@ static struct fc_plugin *ladspa_handle_load_by_path(const char *path)
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pw_log_info("successfully opened '%s'", path);
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pd->desc_func = (LADSPA_Descriptor_Function) dlsym(pd->handle, "ladspa_descriptor");
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if (!pd->desc_func) {
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p->desc_func = (LADSPA_Descriptor_Function) dlsym(p->handle, "ladspa_descriptor");
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if (!p->desc_func) {
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pw_log_warn("cannot find descriptor function in '%s': %s", path, dlerror());
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res = -ENOSYS;
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goto exit;
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}
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plugin->make_desc = ladspa_make_desc;
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plugin->unload = ladspa_unload;
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p->plugin.make_desc = ladspa_make_desc;
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p->plugin.unload = ladspa_unload;
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return plugin;
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return &p->plugin;
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exit:
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if (pd->handle)
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dlclose(pd->handle);
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if (p->handle)
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dlclose(p->handle);
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errno = -res;
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return NULL;
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}
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@ -33,8 +33,6 @@
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#include <spa/utils/string.h>
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struct fc_plugin {
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void *user;
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const struct fc_descriptor *(*make_desc)(struct fc_plugin *plugin, const char *name);
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void (*unload) (struct fc_plugin *plugin);
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};
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@ -50,7 +48,6 @@ struct fc_port {
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struct fc_descriptor {
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struct fc_plugin *plugin;
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void *user;
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const char *name;
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uint64_t flags;
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@ -75,37 +72,16 @@ struct fc_descriptor {
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void (*run) (void *instance, unsigned long SampleCount);
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};
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static inline struct fc_plugin *fc_plugin_new(size_t extra)
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{
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struct fc_plugin *plugin;
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plugin = calloc(1, sizeof(*plugin) + extra);
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plugin->user = SPA_PTROFF(plugin, sizeof(*plugin), void);
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return plugin;
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}
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static inline void fc_plugin_free(struct fc_plugin *plugin)
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{
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if (plugin->unload)
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plugin->unload(plugin);
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free(plugin);
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}
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static inline struct fc_descriptor *fc_descriptor_new(struct fc_plugin *plugin, size_t extra)
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{
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struct fc_descriptor *desc;
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desc = calloc(1, sizeof(*desc) + extra);
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desc->plugin = plugin;
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desc->user = SPA_PTROFF(desc, sizeof(*desc), void);
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return desc;
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}
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static inline void fc_descriptor_free(struct fc_descriptor *desc)
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{
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if (desc->free)
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desc->free(desc);
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free(desc);
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}
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struct fc_plugin *load_ladspa_plugin(const char *path, const char *config);
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