HPACK Header Compression HTTP/2 decompression support

modules/Makefile.am

@@ -21,6 +21,7 @@ EXTRA_LTLIBRARIES =
 
 include common.am
 include access/Makefile.am
+include access/http/Makefile.am
 include access/rtp/Makefile.am
 include arm_neon/Makefile.am
 include audio_filter/Makefile.am

modules/access/http/Makefile.am

+hpack_test_SOURCES = access/http/hpack.c access/http/hpack.h
+hpack_test_CFLAGS = -DDEC_TEST
+check_PROGRAMS += hpack_test
+TESTS += hpack_test

modules/access/http/hpack.h

+/*****************************************************************************
+ * hpack.h: HPACK Header Compression for HTTP/2
+ *****************************************************************************
+ * Copyright (C) 2015 Rémi Denis-Courmont
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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 Lesser 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.
+ *****************************************************************************/
+
+struct hpack_decoder;
+
+struct hpack_decoder *hpack_decode_init(size_t header_table_size);
+void hpack_decode_destroy(struct hpack_decoder *);
+
+int hpack_decode(struct hpack_decoder *dec, const uint8_t *data,
+                 size_t length, char *headers[][2], unsigned max);