diff options
Diffstat (limited to 'codecs/codecs.c')
-rw-r--r-- | codecs/codecs.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/codecs/codecs.c b/codecs/codecs.c new file mode 100644 index 0000000000..0cb397f99b --- /dev/null +++ b/codecs/codecs.c @@ -0,0 +1,88 @@ +/* codecs.c + * codecs interface 2007 Tomas Kukosa + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * 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 the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <glib.h> +#include "codecs.h" + +struct codec_handle { + const char *name; + codec_init_fn init_fn; + codec_release_fn release_fn; + codec_decode_fn decode_fn; +}; + +/* + * List of registered codecs. + */ +static GHashTable *registered_codecs = NULL; + + +/* Find a registered codec by name. */ +codec_handle_t +find_codec(const char *name) +{ + return (registered_codecs) ? (codec_handle_t)g_hash_table_lookup(registered_codecs, name) : NULL; +} + +/* Register a codec by name. */ +void +register_codec(const char *name, codec_init_fn init_fn, codec_release_fn release_fn, codec_decode_fn decode_fn) +{ + struct codec_handle *handle; + + /* Create our hash table if it doesn't already exist */ + if (registered_codecs == NULL) { + registered_codecs = g_hash_table_new(g_str_hash, g_str_equal); + g_assert(registered_codecs != NULL); + } + + /* Make sure the registration is unique */ + g_assert(g_hash_table_lookup(registered_codecs, name) == NULL); + + handle = (struct codec_handle *)g_malloc(sizeof (struct codec_handle)); + handle->name = name; + handle->init_fn = init_fn; + handle->release_fn = release_fn; + handle->decode_fn = decode_fn; + + g_hash_table_insert(registered_codecs, (gpointer)name, (gpointer) handle); +} + +void *codec_init(codec_handle_t codec) +{ + if (!codec) return NULL; + return (codec->init_fn)(); +} + +void codec_release(codec_handle_t codec, void *context) +{ + if (!codec) return; + (codec->release_fn)(context); +} + +int codec_decode(codec_handle_t codec, void *context, const void *input, int inputSizeBytes, void *output, int *outputSizeBytes) +{ + if (!codec) return 0; + return (codec->decode_fn)(context, input, inputSizeBytes, output, outputSizeBytes); +} |