plugins: Add plugin_release_audio_buffer().

Some plugins grab the whole audio buffer and still want to start playback
somehow (e.g. random_folder_advance_config). Since 22e802e the plugin buffer
is allocated via buflib and has to be released explicitely. For these plugins
the automatic free on exit is not sufficient and they need an API function for
that.

Fixes OOM panic on random_folder_advance_config when using start
shuffled playback.

Change-Id: I0d351daa782cb829f4ff80d34c05f40a2e0c142f

1 files changed, 2 insertions, 7 deletions

diff --git a/apps/plugin.h b/apps/plugin.h
index 874f6e0069..6a15f86919 100644
--- a/apps/plugin.h
+++ b/apps/plugin.h
@@ -160,7 +160,7 @@ void* plugin_get_buffer(size_t *buffer_size);
 #define PLUGIN_MAGIC 0x526F634B /* RocK */
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 228
+#define PLUGIN_API_VERSION 229
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any
@@ -976,6 +976,7 @@ struct plugin_api {
 
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
+    void (*plugin_release_audio_buffer)(void);
 };
 
 /* plugin header */
@@ -1006,12 +1007,6 @@ extern unsigned char plugin_end_addr[];
 #endif /* PLUGIN */
 
 int plugin_load(const char* plugin, const void* parameter);
-void* plugin_get_audio_buffer(size_t *buffer_size);
-
-/* plugin_tsr,
-    callback returns true to allow the new plugin to load,
-    reenter means the currently running plugin is being reloaded */
-void plugin_tsr(bool (*exit_callback)(bool reenter));
 
 /* defined by the plugin */
 extern const struct plugin_api *rb;