COPYING: replace the short GPL text by the full version 2 license

[paraslash.git] / filter_chain.c

diff --git a/filter_chain.c b/filter_chain.c
index 5b87b087f6075770ab3a84a8bdbdac814afb99a4..3a5b85dde69978e749e87dafc535507d79509ce6 100644 (file)
--- a/filter_chain.c
+++ b/filter_chain.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
  *
  *     This program is free software; you can redistribute it and/or modify
  *     it under the terms of the GNU General Public License as published by
@@ -69,8 +69,11 @@ static void close_callbacks(struct filter_node *fn)
 {
        struct filter_callback *fcb, *tmp;
 
-       list_for_each_entry_safe(fcb, tmp, &fn->callbacks, node)
+       list_for_each_entry_safe(fcb, tmp, &fn->callbacks, node) {
+               PARA_INFO_LOG("closing %s filter callback\n",
+                       fn->filter->name);
                close_filter_callback(fcb);
+       }
 }
 
 static void call_callbacks(struct filter_node *fn, char *inbuf, size_t inlen,
@@ -97,6 +100,9 @@ static void call_callbacks(struct filter_node *fn, char *inbuf, size_t inlen,
 /**
  * call the convert function of each filter
  *
+ * \param s unused
+ * \param t the task containing the filter chain
+ *
  * This is the core function of the filter subsystem. It loops over the list of
  * filter nodes determined by \a t and calls the filter's convert function if
  * there is input available for the filter node in question. If the convert
@@ -119,7 +125,7 @@ void filter_pre_select(__a_unused struct sched *s, struct task *t)
        int conv, conv_total = 0;
 
        t->ret = -E_FC_EOF;
-       if (*fc->output_eof)
+       if (fc->output_eof && *fc->output_eof)
                goto err_out;
 again:
        ib = fc->inbuf;
@@ -127,28 +133,32 @@ again:
        conv = 0;
        list_for_each_entry(fn, &fc->filters, node) {
                if (*loaded && fn->loaded < fn->bufsize) {
-                       size_t old_fn_loaded = fn->loaded;
-                       PARA_DEBUG_LOG("fc %p loaded: %zd, calling %s convert\n",
-                               fc, *loaded, fn->filter->name);
+                       size_t size, old_fn_loaded = fn->loaded;
+//                     PARA_DEBUG_LOG("fc %p loaded: %zd, calling %s convert\n",
+//                             fc, *loaded, fn->filter->name);
                        t->ret = fn->filter->convert(ib, *loaded, fn);
                        if (t->ret < 0)
                                goto err_out;
-                       call_callbacks(fn, ib, t->ret, fn->buf + old_fn_loaded,
+                       size = t->ret;
+                       call_callbacks(fn, ib, size, fn->buf + old_fn_loaded,
                                fn->loaded - old_fn_loaded);
-                       *loaded -= t->ret;
-                       conv += t->ret;
-                       if (*loaded && t->ret) {
-                               PARA_DEBUG_LOG("moving %zd bytes in input buffer for %s filter\n",
-                                       *loaded,  fn->filter->name);
-                               memmove(ib, ib + t->ret, *loaded);
+                       *loaded -= size;
+                       conv += size;
+                       if (*loaded && size) {
+//                             PARA_DEBUG_LOG("moving %zd bytes in input "
+//                                     "buffer for %s filter\n",
+//                                     *loaded,  fn->filter->name);
+                               memmove(ib, ib + size, *loaded);
                        }
                }
                ib = fn->buf;
                loaded = &fn->loaded;
        }
        conv_total += conv;
-       PARA_DEBUG_LOG("eof (in/out/fc): %d/%d/%d out_loaded: %d, conv: %d, conv_total: %d\n", *fc->input_eof,
-               *fc->output_eof, fc->eof, *fc->out_loaded, conv, conv_total);
+//     PARA_DEBUG_LOG("eof (in/out/fc): %d/%d/%d out_loaded: %zd, "
+//             "conv: %d, conv_total: %d\n", *fc->input_eof,
+//             fc->output_eof? *fc->output_eof : -42,
+//             fc->eof, *fc->out_loaded, conv, conv_total);
        if (conv)
                goto again;
        t->ret = 1;
@@ -181,11 +191,10 @@ void close_filters(struct filter_chain *fc)
 
        if (!fc)
                return;
-       PARA_DEBUG_LOG("closing filter chain %p\n", fc);
+       PARA_NOTICE_LOG("closing filter chain %p\n", fc);
        list_for_each_entry_safe(fn, tmp, &fc->filters, node) {
-               PARA_NOTICE_LOG("closing %s filter callbacks (fc %p, fn %p)\n", fn->filter->name, fc, fn);
                close_callbacks(fn);
-               PARA_NOTICE_LOG("closing %s filter (fc %p, fn %p)\n", fn->filter->name, fc, fn);
+               PARA_INFO_LOG("closing %s filter\n", fn->filter->name);
                fn->filter->close(fn);
                list_del(&fn->node);
                free(fn);
@@ -214,6 +223,8 @@ static int parse_filter_args(int filter_num, char *options, void **conf)
        argv[0] = para_strdup(f->name);
        argc += 1;
        *conf = f->parse_config(argc, argv);
+       free(argv[0]);
+       free(argv);
        return *conf? filter_num : -E_BAD_FILTER_OPTIONS;
 }