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mpv
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command: make empty vf-metadata not an error 

If a filter exists, but has no metadata, just return success. This
allows the user to distinguish between no metadata available, and filter
not inserted.

See #1408.
This commit is contained in:
wm4 2014-12-30 14:04:53 +01:00
parent f2d6c8cb1c
commit 63a414c708
2 changed files with 10 additions and 14 deletions
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17
player/command.c
View File

@ -1075,8 +1075,10 @@ static int tag_property(int action, void *arg, struct mp_tags *tags)
res = talloc_asprintf_append_buffer(res, "%s: %s\n",
tags->keys[n], tags->values[n]);
}
if (!res)
res = talloc_strdup(NULL, "(empty)");
*(char **)arg = res;
return res ? M_PROPERTY_OK : M_PROPERTY_UNAVAILABLE;
return M_PROPERTY_OK;
}
case M_PROPERTY_KEY_ACTION: {
struct m_property_action_arg *ka = arg;
@ -1153,22 +1155,16 @@ static int mp_property_vf_metadata(void *ctx, struct m_property *prop,
return M_PROPERTY_UNAVAILABLE;
struct vf_chain *vf = mpctx->d_video->vfilter;
switch(action) {
case M_PROPERTY_GET_TYPE:
case M_PROPERTY_GET:
case M_PROPERTY_GET_NODE:
return M_PROPERTY_NOT_IMPLEMENTED;
case M_PROPERTY_KEY_ACTION: {
if (action == M_PROPERTY_KEY_ACTION) {
struct m_property_action_arg *ka = arg;
bstr key;
char *rem;
m_property_split_path(ka->key, &key, &rem);
struct mp_tags vf_metadata;
struct mp_tags vf_metadata = {0};
switch (vf_control_by_label(vf, VFCTRL_GET_METADATA, &vf_metadata, key)) {
case CONTROL_NA:
return M_PROPERTY_UNAVAILABLE;
case CONTROL_UNKNOWN:
return M_PROPERTY_UNKNOWN;
case CONTROL_NA: // empty
case CONTROL_OK:
if (strlen(rem)) {
struct m_property_action_arg next_ka = *ka;
@ -1182,7 +1178,6 @@ static int mp_property_vf_metadata(void *ctx, struct m_property *prop,
return M_PROPERTY_ERROR;
}
}
}
return M_PROPERTY_NOT_IMPLEMENTED;
}

7
video/filter/vf.c
View File

@ -170,10 +170,11 @@ int vf_control_by_label(struct vf_chain *c,int cmd, void *arg, bstr label)
char *label_str = bstrdup0(NULL, label);
struct vf_instance *cur = vf_find_by_label(c, label_str);
talloc_free(label_str);
if (cur && cur->control)
return cur->control(cur, cmd, arg);
else
if (cur) {
return cur->control ? cur->control(cur, cmd, arg) : CONTROL_NA;
} else {
return CONTROL_UNKNOWN;
}
}
static void vf_control_all(struct vf_chain *c, int cmd, void *arg)