Plugin auto installer

This add support for plugins to register URI-prefixes and file magic matching
that will make Movian automatically install plugins if needed.

Can be turned off in settings

src/backend/backend.c

@@ -36,6 +36,9 @@
 #include "media/media.h"
 #include "misc/minmax.h"
 
+#if ENABLE_PLUGINS
+#include "plugins.h"
+#endif
 
 prop_t *global_sources; // Move someplace else
 
@@ -550,6 +553,7 @@ static backend_t be_videoparams = {
 BE_REGISTER(videoparams);
 
 
+
 /**
  *
  */
@@ -559,6 +563,10 @@ backend_open(prop_t *page, const char *url, int sync)
   backend_t *be;
   char urlbuf[URL_MAX];
 
+#if ENABLE_PLUGINS
+  plugin_check_prefix_for_autoinstall(url);
+#endif
+
   hts_lwmutex_lock(&dyanamic_backends_mutex);
   LIST_FOREACH(be, &dynamic_backends, be_global_link) {
     if(mystrbegins(url, be->be_prefix)) {
@@ -591,17 +599,18 @@ backend_open(prop_t *page, const char *url, int sync)
 
   be = backend_canhandle(url);
 
-  if(be == NULL)
-    return 1;
+  if(be != NULL) {
+    if(be->be_normalize != NULL &&
+       !be->be_normalize(url, urlbuf, sizeof(urlbuf)))
+      url = urlbuf;
 
-  if(be->be_normalize != NULL &&
-     !be->be_normalize(url, urlbuf, sizeof(urlbuf)))
-    url = urlbuf;
+    prop_set(page, "url", PROP_SET_STRING, url);
 
-  prop_set(page, "url", PROP_SET_STRING, url);
+    be->be_open(page, url, sync);
+    return 0;
+  }
 
-  be->be_open(page, url, sync);
-  return 0;
+  return 1;
 }
 
 

src/fileaccess/fa_audio.c

@@ -40,6 +40,10 @@
 #include "usage.h"
 #include "backend/backend.h"
 
+#if ENABLE_PLUGINS
+#include "plugins.h"
+#endif
+
 #if ENABLE_VMIR
 #include "np/np.h"
 #endif
@@ -131,7 +135,7 @@ be_file_playaudio(const char *url, media_pipe_t *mp,
   media_codec_t *cw;
   event_t *e;
   int registered_play = 0;
-  uint8_t pb[128];
+  uint8_t pb[4096];
   size_t psiz;
 
   mp->mp_seek_base = 0;
@@ -142,7 +146,7 @@ be_file_playaudio(const char *url, media_pipe_t *mp,
 
 
   psiz = fa_read(fh, pb, sizeof(pb));
-  if(psiz < sizeof(pb)) {
+  if(psiz < 128) {
     fa_close(fh);
     snprintf(errbuf, errlen, "File too small");
     return NULL;
@@ -152,6 +156,10 @@ be_file_playaudio(const char *url, media_pipe_t *mp,
     // ZIP File
     return audio_play_zipfile(fh, mp, errbuf, errlen, hold);
 
+#if ENABLE_PLUGINS
+  plugin_probe_for_autoinstall(fh, pb, psiz, url);
+#endif
+
 #if ENABLE_VMIR
   metadata_t *md = metadata_create();
   if(np_fa_probe(fh, pb, psiz, md, url) == 0) {

src/fileaccess/fa_probe.c

@@ -47,6 +47,10 @@
 #include "np/np.h"
 #endif
 
+#if ENABLE_PLUGINS
+#include "plugins.h"
+#endif
+
 /**
  *
  */
@@ -560,17 +564,21 @@ fa_probe_metadata(const char *url, char *errbuf, size_t errsize,
 
   metadata_t *md = metadata_create();
 
-  uint8_t buf[1025];
-
+  uint8_t buf[4097];
   int l = fa_read(fh, buf, sizeof(buf) - 1);
   if(l > 0) {
+    buf[l] = 0;
+
+#if ENABLE_PLUGINS
+    plugin_probe_for_autoinstall(fh, buf, l, url);
+#endif
+
 #if ENABLE_VMIR
     if(np_fa_probe(fh, buf, l, md, url) == 0) {
       fa_close_with_park(fh, park);
       return md;
     }
 #endif
-    buf[l] = 0;
     if(fa_probe_header(md, url, fh, filename, buf, l)) {
       fa_close_with_park(fh, park);
       return md;

src/np/np_fs.c

@@ -103,6 +103,8 @@ np_fs_open(void *opaque, const char *path,
     if(flags & VMIR_FS_OPEN_APPEND) {
       myflags |= FA_APPEND;
     }
+  } else {
+    myflags |= FA_BUFFERED_BIG;
   }
 
   fa_handle_t *f = fa_open_ex(path, NULL, 0, myflags, NULL);