configure.ac: Check for optional dependency on zlib for id3demux

Original commit message from CVS:
* configure.ac:
Check for optional dependency on zlib for id3demux

* gst/id3demux/Makefile.am:
* gst/id3demux/gstid3demux.c: (gst_gst_id3demux_get_type),
(gst_id3demux_base_init), (gst_id3demux_class_init),
(gst_id3demux_reset), (gst_id3demux_init), (gst_id3demux_dispose),
(gst_id3demux_add_srcpad), (gst_id3demux_remove_srcpad),
(gst_id3demux_trim_buffer), (gst_id3demux_chain),
(gst_id3demux_set_property), (gst_id3demux_get_property),
(id3demux_get_upstream_size), (gst_id3demux_srcpad_event),
(gst_id3demux_read_id3v1), (gst_id3demux_read_id3v2),
(gst_id3demux_sink_activate), (gst_id3demux_src_activate_pull),
(gst_id3demux_src_checkgetrange), (gst_id3demux_read_range),
(gst_id3demux_src_getrange), (gst_id3demux_change_state),
(gst_id3demux_pad_query), (gst_id3demux_get_query_types),
(simple_find_peek), (simple_find_suggest),
(gst_id3demux_do_typefind), (gst_id3demux_send_tag_event),
(plugin_init):
* gst/id3demux/gstid3demux.h:
* gst/id3demux/id3tags.c: (read_synch_uint),
(id3demux_read_id3v1_tag), (id3demux_read_id3v2_tag),
(id3demux_id3v2_frame_hdr_size), (convert_fid_to_v240),
(id3demux_id3v2_frames_to_tag_list):
* gst/id3demux/id3tags.h:
* gst/id3demux/id3v2.4.0-frames.txt:
* gst/id3demux/id3v2.4.0-structure.txt:
* gst/id3demux/id3v2frames.c: (id3demux_id3v2_parse_frame),
(parse_comment_frame), (parse_text_identification_frame),
(id3v2_tag_to_taglist), (parse_split_strings):
All new LGPL id3 demuxer. Can use zlib for compressed frames,
otherwise it discards them. Works on my test files.

* gst/wavparse/gstwavparse.c: (gst_wavparse_loop):
Don't send EOS to a non-existing srcpad
The debug category can be static

1 files changed, 112 insertions, 0 deletions

diff --git a/gst/id3demux/id3tags.h b/gst/id3demux/id3tags.h
new file mode 100644
index 00000000..c81cd550
--- /dev/null
+++ b/gst/id3demux/id3tags.h
@@ -0,0 +1,112 @@
+/* Copyright 2005 Jan Schmidt <thaytan@mad.scientist.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __ID3TAGS_H__
+#define __ID3TAGS_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define ID3V1_TAG_SIZE 128
+#define ID3V2_MARK_SIZE 3
+#define ID3V2_HDR_SIZE 10
+
+typedef enum {
+  ID3TAGS_V1_BAD_SIZE,
+  ID3TAGS_MORE_DATA,
+  ID3TAGS_READ_TAG,
+  ID3TAGS_BROKEN_TAG
+} ID3TagsResult;
+
+/* From id3tags.c */
+ID3TagsResult id3demux_read_id3v1_tag (GstBuffer *buffer, guint *id3v1_size,
+  GstTagList **tags);
+ID3TagsResult id3demux_read_id3v2_tag (GstBuffer *buffer, guint *id3v2_size,
+  GstTagList **tags);
+G_END_DECLS
+
+/* Things shared by id3tags.c and id3v2frames.c */
+#define ID3V2_VERSION 0x0400
+#define ID3V2_VER_MAJOR(v) ((v) >> 8)
+#define ID3V2_VER_MINOR(v) ((v) & 0xff)
+   
+typedef struct {
+  guint16 version;
+  guint8 flags;
+  guint32 size;
+    
+  guint8 *frame_data;
+  guint32 frame_data_size;
+
+  guint32 ext_hdr_size;
+  guint8 ext_flag_bytes;
+  guint8 *ext_flag_data;  
+} ID3v2Header;
+
+typedef struct {
+  ID3v2Header hdr;
+  
+  GstBuffer *buffer;
+  GstTagList *tags;
+
+  /* Current frame decoding */
+  guint cur_frame_size;
+  gchar *frame_id;
+  guint16 frame_flags;
+  
+  guint8 *parse_data;
+  guint parse_size;
+} ID3TagsWorking;
+
+enum {
+  ID3V2_HDR_FLAG_UNSYNC       = 0x80,
+  ID3V2_HDR_FLAG_EXTHDR       = 0x40,
+  ID3V2_HDR_FLAG_EXPERIMENTAL = 0x20,
+  ID3V2_HDR_FLAG_FOOTER       = 0x10
+};
+
+enum {
+  ID3V2_EXT_FLAG_UPDATE     = 0x80,
+  ID3V2_EXT_FLAG_CRC        = 0x40,
+  ID3V2_EXT_FLAG_RESTRICTED = 0x20
+};
+
+enum {
+  ID3V2_FRAME_STATUS_FRAME_ALTER_PRESERVE  = 0x4000,
+  ID3V2_FRAME_STATUS_FILE_ALTER_PRESERVE   = 0x2000,
+  ID3V2_FRAME_STATUS_READONLY              = 0x1000,
+  ID3V2_FRAME_FORMAT_GROUPING_ID           = 0x0040,
+  ID3V2_FRAME_FORMAT_COMPRESSION           = 0x0008,
+  ID3V2_FRAME_FORMAT_ENCRYPTION            = 0x0004,
+  ID3V2_FRAME_FORMAT_UNSYNCHRONISATION     = 0x0002,
+  ID3V2_FRAME_FORMAT_DATA_LENGTH_INDICATOR = 0x0001
+};
+
+#define ID3V2_3_FRAME_FLAGS_MASK              \
+  (ID3V2_FRAME_STATUS_FRAME_ALTER_PRESERVE |  \
+   ID3V2_FRAME_STATUS_FILE_ALTER_PRESERVE  |  \
+   ID3V2_FRAME_STATUS_READONLY |              \
+   ID3V2_FRAME_FORMAT_GROUPING_ID |           \
+   ID3V2_FRAME_FORMAT_COMPRESSION |           \
+   ID3V2_FRAME_FORMAT_ENCRYPTION)
+
+/* From id3v2frames.c */
+gboolean id3demux_id3v2_parse_frame (ID3TagsWorking *work);
+
+#endif