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spa: examples: local-libcamera: pass camera id to the plugin

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Barnabás Pőcze 2025-07-25 15:43:15 +02:00 • committed by Wim Taymans
parent 4e4086934c
commit 6f058e6b0d
1 changed files with 22 additions and 11 deletions
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33
spa/examples/local-libcamera.c
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@ -24,6 +24,7 @@
#include <SDL2/SDL.h> #include <SDL2/SDL.h>
#include <spa/support/plugin.h> #include <spa/support/plugin.h>
#include <spa/utils/keys.h>
#include <spa/utils/names.h> #include <spa/utils/names.h>
#include <spa/utils/result.h> #include <spa/utils/result.h>
#include <spa/utils/string.h> #include <spa/utils/string.h>
@ -83,7 +84,8 @@ struct data {
unsigned int n_buffers; unsigned int n_buffers;
}; };
static int load_handle(struct data *data, struct spa_handle **handle, const char *lib, const char *name) static int load_handle(struct data *data, struct spa_handle **handle, const char *lib, const char *name,
const struct spa_dict *params)
{ {
int res; int res;
void *hnd; void *hnd;
@ -117,9 +119,9 @@ static int load_handle(struct data *data, struct spa_handle **handle, const char
if (!spa_streq(factory->name, name)) if (!spa_streq(factory->name, name))
continue; continue;
*handle = calloc(1, spa_handle_factory_get_size(factory, NULL)); *handle = calloc(1, spa_handle_factory_get_size(factory, params));
if ((res = spa_handle_factory_init(factory, *handle, if ((res = spa_handle_factory_init(factory, *handle,
NULL, data->support, params, data->support,
data->n_support)) < 0) { data->n_support)) < 0) {
printf("can't make factory instance: %d\n", res); printf("can't make factory instance: %d\n", res);
return res; return res;
@ -129,13 +131,14 @@ static int load_handle(struct data *data, struct spa_handle **handle, const char
return -EBADF; return -EBADF;
} }
static int make_node(struct data *data, struct spa_node **node, const char *lib, const char *name) static int make_node(struct data *data, struct spa_node **node, const char *lib, const char *name,
const struct spa_dict *params)
{ {
struct spa_handle *handle = NULL; struct spa_handle *handle = NULL;
void *iface; void *iface;
int res; int res;
if ((res = load_handle(data, &handle, lib, name)) < 0) if ((res = load_handle(data, &handle, lib, name, params)) < 0)
return res; return res;
if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Node, &iface)) < 0) { if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Node, &iface)) < 0) {
@ -237,10 +240,13 @@ static int make_nodes(struct data *data, const char *device)
uint8_t buffer[256]; uint8_t buffer[256];
uint32_t index; uint32_t index;
if ((res = const struct spa_dict_item items[] = {
make_node(data, &data->source, { SPA_KEY_API_LIBCAMERA_PATH, device },
"libcamera/libspa-libcamera.so", };
SPA_NAME_API_LIBCAMERA_SOURCE)) < 0) {
if ((res = make_node(data, &data->source,
"libcamera/libspa-libcamera.so", SPA_NAME_API_LIBCAMERA_SOURCE,
&SPA_DICT_INIT_ARRAY(items))) < 0) {
printf("can't create libcamera-source: %d\n", res); printf("can't create libcamera-source: %d\n", res);
return res; return res;
} }
@ -434,13 +440,18 @@ int main(int argc, char *argv[])
struct spa_handle *handle = NULL; struct spa_handle *handle = NULL;
void *iface; void *iface;
if (argc < 2) {
printf("usage: %s <camera-id>\n", argv[0]);
return EXIT_FAILURE;
}
if ((str = getenv("SPA_PLUGIN_DIR")) == NULL) if ((str = getenv("SPA_PLUGIN_DIR")) == NULL)
str = PLUGINDIR; str = PLUGINDIR;
data.plugin_dir = str; data.plugin_dir = str;
if ((res = load_handle(&data, &handle, if ((res = load_handle(&data, &handle,
"support/libspa-support.so", "support/libspa-support.so",
SPA_NAME_SUPPORT_SYSTEM)) < 0) SPA_NAME_SUPPORT_SYSTEM, NULL)) < 0)
return res; return res;
if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_System, &iface)) < 0) { if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_System, &iface)) < 0) {
@ -452,7 +463,7 @@ int main(int argc, char *argv[])
if ((res = load_handle(&data, &handle, if ((res = load_handle(&data, &handle,
"support/libspa-support.so", "support/libspa-support.so",
SPA_NAME_SUPPORT_LOOP)) < 0) SPA_NAME_SUPPORT_LOOP, NULL)) < 0)
return res; return res;
if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Loop, &iface)) < 0) { if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Loop, &iface)) < 0) {