1 files changed, 119 insertions, 0 deletions
diff --git a/filters/user_filters.c b/filters/user_filters.c
new file mode 100644
index 0000000000..f59dd22d76
--- /dev/null
+++ b/filters/user_filters.c
@@ -0,0 +1,119 @@
+#include "config.h"
+
+#include "common/common.h"
+#include "common/msg.h"
+#include "options/m_config.h"
+
+#include "f_lavfi.h"
+#include "user_filters.h"
+
+static bool get_desc_from(const struct mp_user_filter_entry **list, int num,
+                          struct m_obj_desc *dst, int index)
+{
+    if (index >= num)
+        return false;
+    const struct mp_user_filter_entry *entry = list[index];
+    *dst = entry->desc;
+    dst->p = entry;
+    return true;
+}
+
+// --vf option
+
+const struct mp_user_filter_entry *vf_list[] = {
+    &vf_format,
+    &vf_lavfi,
+    &vf_lavfi_bridge,
+    &vf_sub,
+#if HAVE_VAPOURSYNTH_CORE && HAVE_VAPOURSYNTH
+    &vf_vapoursynth,
+#endif
+#if HAVE_VAPOURSYNTH_CORE && HAVE_VAPOURSYNTH_LAZY
+    &vf_vapoursynth_lazy,
+#endif
+#if HAVE_VDPAU
+    &vf_vdpaupp,
+#endif
+#if HAVE_VAAPI
+    &vf_vavpp,
+#endif
+#if HAVE_D3D_HWACCEL
+    &vf_d3d11vpp,
+#endif
+};
+
+static bool get_vf_desc(struct m_obj_desc *dst, int index)
+{
+    return get_desc_from(vf_list, MP_ARRAY_SIZE(vf_list), dst, index);
+}
+
+const struct m_obj_list vf_obj_list = {
+    .get_desc = get_vf_desc,
+    .description = "video filters",
+    .allow_disable_entries = true,
+    .allow_unknown_entries = true,
+};
+
+// Create a bidir, single-media filter from command line arguments.
+struct mp_filter *mp_create_user_filter(struct mp_filter *parent,
+                                        enum mp_output_chain_type type,
+                                        const char *name, char **args)
+{
+    const struct m_obj_list *obj_list = NULL;
+    const char *defs_name = NULL;
+    enum mp_frame_type frame_type = 0;
+    if (type == MP_OUTPUT_CHAIN_VIDEO) {
+        frame_type = MP_FRAME_VIDEO;
+        obj_list = &vf_obj_list;
+        defs_name = "vf-defaults";
+    }
+    assert(frame_type && obj_list);
+
+    struct mp_filter *f = NULL;
+
+    struct m_obj_desc desc;
+    if (!m_obj_list_find(&desc, obj_list, bstr0(name))) {
+        // Generic lavfi bridge.
+        if (strncmp(name, "lavfi-", 6) == 0)
+            name += 6;
+        struct mp_lavfi *l =
+            mp_lavfi_create_filter(parent, frame_type, true, NULL, name, args);
+        if (l)
+            f = l->f;
+        goto done;
+    }
+
+    void *options = NULL;
+    if (desc.options) {
+        struct m_obj_settings *defs = NULL;
+        if (defs_name) {
+            mp_read_option_raw(parent->global, defs_name,
+                                &m_option_type_obj_settings_list, &defs);
+        }
+
+        struct m_config *config =
+            m_config_from_obj_desc_and_args(NULL, parent->log, parent->global,
+                                            &desc, name, defs, args);
+
+        struct m_option dummy = {.type = &m_option_type_obj_settings_list};
+        m_option_free(&dummy, &defs);
+
+        if (!config)
+            goto done;
+
+        options = config->optstruct;
+        // Free config when options is freed.
+        ta_set_parent(options, NULL);
+        ta_set_parent(config, options);
+    }
+
+    const struct mp_user_filter_entry *entry = desc.p;
+    f = entry->create(parent, options);
+
+done:
+    if (!f) {
+        MP_ERR(parent, "Creating filter '%s' failed.\n", name);
+        return NULL;
+    }
+    return f;
+}