command: export profile list as a property

Targeted at scripts, which can do whatever they want with it. This comes
with the promise that they could get randomly broken any time.

See #977.

DOCS/man/input.rst

@@ -2211,6 +2211,14 @@ Property list
 ``property-list``
     Return the list of top-level properties.
 
+``profile-list``
+    Return the list of profiles and their contents. This is highly
+    implementation-specific, and may change any time. Currently, it returns
+    an array of options for each profile. Each option has a name and a value,
+    with the value currently always being a string. Note that the options array
+    is not a map, as order matters and duplicate entries are possible. Recursive
+    profiles are not expanded, and show up as special ``profile`` options.
+
 Property Expansion
 ------------------
 

options/m_config.c

@@ -36,6 +36,7 @@
 #include "options/m_option.h"
 #include "common/msg.h"
 #include "common/msg_control.h"
+#include "misc/node.h"
 
 static const union m_option_value default_value;
 
@@ -933,6 +934,32 @@ int m_config_set_profile(struct m_config *config, char *name, int flags)
     return 0;
 }
 
+struct mpv_node m_config_get_profiles(struct m_config *config)
+{
+    struct mpv_node root;
+    node_init(&root, MPV_FORMAT_NODE_ARRAY, NULL);
+
+    for (m_profile_t *profile = config->profiles; profile; profile = profile->next)
+    {
+        struct mpv_node *entry = node_array_add(&root, MPV_FORMAT_NODE_MAP);
+
+        node_map_add_string(entry, "name", profile->name);
+        if (profile->desc)
+            node_map_add_string(entry, "profile-desc", profile->desc);
+
+        struct mpv_node *opts =
+            node_map_add(entry, "options", MPV_FORMAT_NODE_ARRAY);
+
+        for (int n = 0; n < profile->num_opts; n++) {
+            struct mpv_node *opt_entry = node_array_add(opts, MPV_FORMAT_NODE_MAP);
+            node_map_add_string(opt_entry, "key", profile->opts[n * 2 + 0]);
+            node_map_add_string(opt_entry, "value", profile->opts[n * 2 + 1]);
+        }
+    }
+
+    return root;
+}
+
 void *m_config_alloc_struct(void *talloc_ctx,
                             const struct m_sub_options *subopts)
 {

options/m_config.h

@@ -247,6 +247,8 @@ int m_config_set_profile_option(struct m_config *config, struct m_profile *p,
  */
 int m_config_set_profile(struct m_config *config, char *name, int flags);
 
+struct mpv_node m_config_get_profiles(struct m_config *config);
+
 void *m_config_alloc_struct(void *talloc_ctx,
                             const struct m_sub_options *subopts);
 

player/command.c

@@ -3668,6 +3668,22 @@ static int mp_property_list(void *ctx, struct m_property *prop,
     return M_PROPERTY_NOT_IMPLEMENTED;
 }
 
+static int mp_profile_list(void *ctx, struct m_property *prop,
+                           int action, void *arg)
+{
+    MPContext *mpctx = ctx;
+    switch (action) {
+    case M_PROPERTY_GET_TYPE:
+        *(struct m_option *)arg = (struct m_option){.type = CONF_TYPE_NODE};
+        return M_PROPERTY_OK;
+    case M_PROPERTY_GET: {
+        *(struct mpv_node *)arg = m_config_get_profiles(mpctx->mconfig);
+        return M_PROPERTY_OK;
+    }
+    }
+    return M_PROPERTY_NOT_IMPLEMENTED;
+}
+
 // Redirect a property name to another
 #define M_PROPERTY_ALIAS(name, real_property) \
     {(name), mp_property_alias, .priv = (real_property)}
@@ -3911,6 +3927,7 @@ static const struct m_property mp_properties[] = {
     {"file-local-options", mp_property_local_options},
     {"option-info", mp_property_option_info},
     {"property-list", mp_property_list},
+    {"profile-list", mp_profile_list},
 
     // compatibility
     M_PROPERTY_ALIAS("video", "vid"),