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lv2: add support for host features

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Implement a log handler as the first one.
This commit is contained in:
Stefan Sauer 2016-05-11 23:12:07 -07:00
parent 864a0f453d
commit 8a6c459f70
1 changed files with 42 additions and 1 deletions
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43
ext/lv2/gstlv2utils.c
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@ -25,9 +25,50 @@
#include "gstlv2.h" #include "gstlv2.h"
#include "gstlv2utils.h" #include "gstlv2utils.h"
#include <lv2/lv2plug.in/ns/ext/log/log.h>
GST_DEBUG_CATEGORY_EXTERN (lv2_debug); GST_DEBUG_CATEGORY_EXTERN (lv2_debug);
#define GST_CAT_DEFAULT lv2_debug #define GST_CAT_DEFAULT lv2_debug
/* host features */
/* - log extension */
static int
lv2_log_printf (LV2_Log_Handle handle, LV2_URID type, const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
gst_debug_log_valist (lv2_debug, GST_LEVEL_INFO, "", "", 0, NULL, fmt, ap);
va_end (ap);
return 1;
}
static int
lv2_log_vprintf (LV2_Log_Handle handle, LV2_URID type,
const char *fmt, va_list ap)
{
gst_debug_log_valist (lv2_debug, GST_LEVEL_INFO, "", "", 0, NULL, fmt, ap);
return 1;
}
static LV2_Log_Log lv2_log = {
NULL, /* handle */
lv2_log_printf, lv2_log_vprintf,
};
static const LV2_Feature lv2_log_feature = { LV2_LOG__log, &lv2_log };
/* feature list */
static const LV2_Feature *lv2_features[] = {
&lv2_log_feature,
NULL
};
/* api helpers */
void void
gst_lv2_init (GstLV2 * lv2, GstLV2Class * lv2_class) gst_lv2_init (GstLV2 * lv2, GstLV2Class * lv2_class)
{ {
@ -57,7 +98,7 @@ gst_lv2_setup (GstLV2 * lv2, unsigned long rate)
lilv_instance_free (lv2->instance); lilv_instance_free (lv2->instance);
if (!(lv2->instance = if (!(lv2->instance =
lilv_plugin_instantiate (lv2_class->plugin, rate, NULL))) lilv_plugin_instantiate (lv2_class->plugin, rate, lv2_features)))
return FALSE; return FALSE;
/* connect the control ports */ /* connect the control ports */