aboutsummaryrefslogtreecommitdiff
path: root/src/liblzma/common/easy_common.c
diff options
context:
space:
mode:
authorLasse Collin <lasse.collin@tukaani.org>2008-01-22 22:49:24 +0200
committerLasse Collin <lasse.collin@tukaani.org>2008-01-22 22:49:24 +0200
commitcf49f42a6bd40143f54a6b10d6e605599e958c0b (patch)
tree39cb9334863b938b34e208c2d89072dd447432cb /src/liblzma/common/easy_common.c
parentFix Multi-Block Stream encoder's EOPM usage. (diff)
downloadxz-cf49f42a6bd40143f54a6b10d6e605599e958c0b.tar.xz
Added lzma_easy_* functions. These should make using
liblzma as easy as using zlib, because the easy API don't require developers to know any fancy LZMA options. Note that Multi-Block Stream encoding is currently broken. The easy API should be OK, the bug(s) are elsewhere.
Diffstat (limited to '')
-rw-r--r--src/liblzma/common/easy_common.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/liblzma/common/easy_common.c b/src/liblzma/common/easy_common.c
new file mode 100644
index 00000000..e0c12a52
--- /dev/null
+++ b/src/liblzma/common/easy_common.c
@@ -0,0 +1,54 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file easy_common.c
+/// \brief Shared stuff for easy encoder initialization functions
+//
+// Copyright (C) 2008 Lasse Collin
+//
+// This library 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 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
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "easy_common.h"
+
+
+extern bool
+lzma_easy_set_filters(lzma_options_filter *filters, uint32_t level)
+{
+ bool error = false;
+
+ if (level == 0) {
+ filters[0].id = LZMA_VLI_VALUE_UNKNOWN;
+
+#ifdef HAVE_FILTER_LZMA
+ } else if (level <= 9) {
+ filters[0].id = LZMA_FILTER_LZMA;
+ filters[0].options = (void *)(&lzma_preset_lzma[level - 1]);
+ filters[1].id = LZMA_VLI_VALUE_UNKNOWN;
+#endif
+
+ } else {
+ error = true;
+ }
+
+ return error;
+}
+
+
+extern LZMA_API uint32_t
+lzma_easy_memory_usage(lzma_easy_level level)
+{
+ lzma_options_filter filters[8];
+ if (lzma_easy_set_filters(filters, level))
+ return UINT32_MAX;
+
+ return lzma_memory_usage(filters, true);
+}