From 8dd45c0027604b6ff82807760da7a77da4e1b4b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <slomo@circular-chaos.org>
Date: Tue, 18 Jul 2006 14:08:06 +0000
Subject: configure.ac: Check for wavpack version and define WAVPACK_OLD_API if
 necessary.
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Original commit message from CVS:
Patch by: Sebastian Dröge <slomo at circular-chaos.org>
* configure.ac:
Check for wavpack version and define WAVPACK_OLD_API if
necessary.
* ext/wavpack/Makefile.am:
* ext/wavpack/gstwavpackcommon.c: (gst_wavpack_read_header),
(gst_wavpack_read_metadata):
* ext/wavpack/gstwavpackcommon.h:
* ext/wavpack/gstwavpackdec.c: (gst_wavpack_dec_base_init),
(gst_wavpack_dec_class_init), (gst_wavpack_dec_init),
(gst_wavpack_dec_finalize), (gst_wavpack_dec_format_samples),
(gst_wavpack_dec_clip_outgoing_buffer), (gst_wavpack_dec_chain),
(gst_wavpack_dec_sink_event), (gst_wavpack_dec_change_state),
(gst_wavpack_dec_request_new_pad), (gst_wavpack_dec_plugin_init):
* ext/wavpack/gstwavpackdec.h:
* ext/wavpack/gstwavpackenc.c: (gst_wavpack_enc_class_init),
(gst_wavpack_enc_init), (gst_wavpack_enc_finalize),
(gst_wavpack_enc_set_wp_config):
* ext/wavpack/gstwavpackparse.c: (gst_wavpack_parse_base_init),
(gst_wavpack_parse_finalize), (gst_wavpack_parse_class_init),
(gst_wavpack_parse_index_get_entry_from_sample),
(gst_wavpack_parse_scan_to_find_sample),
(gst_wavpack_parse_handle_seek_event),
(gst_wavpack_parse_create_src_pad):
* ext/wavpack/gstwavpackstreamreader.c:
* ext/wavpack/gstwavpackstreamreader.h:
Port to new/official wavpack API, don't use API that was exported
in wavpack header files and in the lib but meant to be private, at
least not for recent wavpack versions; misc. 'cleanups' (#347443).
---
 ext/wavpack/gstwavpackcommon.c | 87 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 84 insertions(+), 3 deletions(-)

(limited to 'ext/wavpack/gstwavpackcommon.c')

diff --git a/ext/wavpack/gstwavpackcommon.c b/ext/wavpack/gstwavpackcommon.c
index 61c8add0..0272fdf0 100644
--- a/ext/wavpack/gstwavpackcommon.c
+++ b/ext/wavpack/gstwavpackcommon.c
@@ -1,3 +1,30 @@
+/* GStreamer Wavpack plugin
+ * Copyright (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
+ * Copyright (c) 1998 - 2005 Conifer Software
+ * Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
+ *
+ * gstwavpackcommon.c: common helper functions
+ * 
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include "gstwavpackcommon.h"
 #include <string.h>
 
@@ -5,10 +32,64 @@ gboolean
 gst_wavpack_read_header (WavpackHeader * header, guint8 * buf)
 {
   g_memmove (header, buf, sizeof (WavpackHeader));
+
+#ifndef WAVPACK_OLD_API
+  WavpackLittleEndianToNative (header, WavpackHeaderFormat);
+#else
   little_endian_to_native (header, WavpackHeaderFormat);
+#endif
+
+  return (memcmp (header->ckID, "wvpk", 4) == 0);
+}
 
-  if (strncmp (header->ckID, "wvpk", 4))
+/* inspired by the original one in wavpack */
+gboolean
+gst_wavpack_read_metadata (GstWavpackMetadata * wpmd, guint8 * header_data,
+    guint8 ** p_data)
+{
+  WavpackHeader hdr;
+  guint8 *end;
+
+  gst_wavpack_read_header (&hdr, header_data);
+  end = header_data + hdr.ckSize + 8;
+
+  if (end - *p_data < 2)
     return FALSE;
-  else
-    return TRUE;
+
+  wpmd->id = GST_READ_UINT8 (*p_data);
+  wpmd->byte_length = 2 * (guint) GST_READ_UINT8 (*p_data + 1);
+
+  *p_data += 2;
+
+  if ((wpmd->id & ID_LARGE) == ID_LARGE) {
+    guint extra;
+
+    wpmd->id &= ~ID_LARGE;
+
+    if (end - *p_data < 2)
+      return FALSE;
+
+    extra = GST_READ_UINT16_LE (*p_data);
+    wpmd->byte_length += (extra << 9);
+    *p_data += 2;
+  }
+
+  if ((wpmd->id & ID_ODD_SIZE) == ID_ODD_SIZE) {
+    wpmd->id &= ~ID_ODD_SIZE;
+    --wpmd->byte_length;
+  }
+
+  if (wpmd->byte_length > 0) {
+    if (end - *p_data < wpmd->byte_length + (wpmd->byte_length & 1)) {
+      wpmd->data = NULL;
+      return FALSE;
+    }
+
+    wpmd->data = *p_data;
+    *p_data += wpmd->byte_length + (wpmd->byte_length & 1);
+  } else {
+    wpmd->data = NULL;
+  }
+
+  return TRUE;
 }
-- 
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