Suppress embedding fonts when the skp's fonts match the OS fonts.
The million SKPs generated require >5T of storage. A good deal
of that are copies of system fonts.
Chrome built with
#DEFINE SK_WHITELIST_SERIALIZED_TYPEFACES
will omit the font data if the font matches a precomputed
checksum.
The captured SKP prepends sk_ to the names of fonts that
have their data omitted. The SKP consumer can either add
renamed fonts from the recording machine, or add
gDeserializeTypefaceDelegate = WhitelistDeserializeTypeface;
which strips the sk_ prefix when deserializing typefaces.
whitelist_typefaces --check
Computes the checksums of fallback
fonts and returns 0 if the checksums match the checked-in
file SkWhitelistChecksum.cpp.
whitelist_typefaces --generate
Writes an updated version of SkWhitelistChecksum.cpp.
(Added Mike since this modifies a public header)
R=bungeman@google.com,rmistry@google.com,reed@google.com
Review URL: https://codereview.chromium.org/1317913005
diff --git a/src/utils/SkWhitelistChecksums.cpp b/src/utils/SkWhitelistChecksums.cpp
new file mode 100644
index 0000000..b223d6c
--- /dev/null
+++ b/src/utils/SkWhitelistChecksums.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * GenerateChecksums() in ../../src/utils/SkWhitelistTypefaces.cpp generated SkWhitelistChecksums.cpp.
+ * Run 'whitelist_typefaces --generate' to create anew.
+ */
+
+#include "SkTDArray.h"
+
+struct Whitelist {
+ const char* fFontName;
+ uint32_t fChecksum;
+ bool fSerializedNameOnly;
+ bool fSerializedSub;
+};
+
+static Whitelist whitelist[] = {
+ { "Aegean", 0x82ad09a5, false, false },
+ { "Analecta", 0xc378d990, false, false },
+ { "Arial", 0xbc28cb14, false, false },
+ { "DejaVu Sans", 0x91e2fe32, false, false },
+ { "DejaVu Sans Mono", 0xddc8af48, false, false },
+ { "DejaVu Serif", 0x0077166d, false, false },
+ { "FreeMono", 0xb9e602cd, false, false },
+ { "FreeSans", 0x6f484994, false, false },
+ { "FreeSerif", 0x933ce1c4, false, false },
+ { "Khmer OS", 0x917c40aa, false, false },
+ { "Kochi Gothic", 0x962132dd, false, false },
+ { "Lohit Kannada", 0x7c829df4, false, false },
+ { "Lohit Marathi", 0x0eb0a941, false, false },
+ { "Lohit Oriya", 0xf3e9d313, false, false },
+ { "Lohit Punjabi", 0xfd8b26e0, false, false },
+ { "Lohit Tamil", 0x83a29565, false, false },
+ { "Lohit Telugu", 0x11424bd0, false, false },
+ { "Meera", 0xe3e16220, false, false },
+ { "Mukti Narrow", 0x53f7d053, false, false },
+ { "NanumBarunGothic", 0x859e77ea, false, false },
+ { "NanumGothic", 0x9edbcdb8, false, false },
+ { "OpenSymbol", 0xd3d743df, false, false },
+ { "Symbola", 0xfa80f2ab, false, false },
+ { "TakaoPGothic", 0x068c405a, false, false },
+ { "Waree", 0x036e4fa4, false, false },
+ { "WenQuanYi Micro Hei", 0xfea8587c, false, false },
+ { "padmaa", 0x09eb1865, false, false },
+};
+
+static const int whitelistCount = (int) SK_ARRAY_COUNT(whitelist);