Add postscript path

This patch adds the additional functions required to make postscript
printing functional. The most significant additions are are two added
compression functions and a new API for setting the postscript level.

Not currently called from Chromium, Chromium patch to come.

BUG=

Review-Url: https://codereview.chromium.org/2612243005

3 files changed, 48 insertions, 0 deletions

diff --git a/testing/libfuzzer/BUILD.gn b/testing/libfuzzer/BUILD.gn
index 2b9915d322..9ba8e32ba6 100644
--- a/testing/libfuzzer/BUILD.gn
+++ b/testing/libfuzzer/BUILD.gn
@@ -105,6 +105,12 @@ pdfium_fuzzer("pdf_cmap_fuzzer") {
   ]
 }
 
+pdfium_fuzzer("pdf_codec_a85_fuzzer") {
+  sources = [
+    "pdf_codec_a85_fuzzer.cc",
+  ]
+}
+
 pdfium_fuzzer("pdf_codec_fax_fuzzer") {
   sources = [
     "pdf_codec_fax_fuzzer.cc",
@@ -123,6 +129,12 @@ pdfium_fuzzer("pdf_codec_jbig2_fuzzer") {
   ]
 }
 
+pdfium_fuzzer("pdf_codec_rle_fuzzer") {
+  sources = [
+    "pdf_codec_rle_fuzzer.cc",
+  ]
+}
+
 pdfium_fuzzer("pdf_hint_table_fuzzer") {
   sources = [
     "pdf_hint_table_fuzzer.cc",
diff --git a/testing/libfuzzer/pdf_codec_a85_fuzzer.cc b/testing/libfuzzer/pdf_codec_a85_fuzzer.cc
new file mode 100644
index 0000000000..20bd792886
--- /dev/null
+++ b/testing/libfuzzer/pdf_codec_a85_fuzzer.cc
@@ -0,0 +1,18 @@
+// Copyright 2017 The PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cstdint>
+#include <memory>
+
+#include "core/fxcodec/codec/ccodec_basicmodule.h"
+#include "core/fxcrt/fx_memory.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  uint8_t* dest_buf = nullptr;
+  uint32_t dest_size = 0;
+  CCodec_BasicModule encoder_module;
+  encoder_module.A85Encode(data, size, &dest_buf, &dest_size);
+  FX_Free(dest_buf);
+  return 0;
+}
diff --git a/testing/libfuzzer/pdf_codec_rle_fuzzer.cc b/testing/libfuzzer/pdf_codec_rle_fuzzer.cc
new file mode 100644
index 0000000000..c86671e5f4
--- /dev/null
+++ b/testing/libfuzzer/pdf_codec_rle_fuzzer.cc
@@ -0,0 +1,18 @@
+// Copyright 2017 The PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cstdint>
+#include <memory>
+
+#include "core/fxcodec/codec/ccodec_basicmodule.h"
+#include "core/fxcrt/fx_memory.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  uint8_t* dest_buf = nullptr;
+  uint32_t dest_size = 0;
+  CCodec_BasicModule encoder_module;
+  encoder_module.RunLengthEncode(data, size, &dest_buf, &dest_size);
+  FX_Free(dest_buf);
+  return 0;
+}