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Store ninepatch chunks in the png header in CodexTest

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We are making a change in Android to store ninepatch chunks in the
png header.  Thus, our ninepatch test should match the Android
framework's use.
https://googleplex-android-review.git.corp.google.com/#/c/832067/

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1553303003

Review URL: https://codereview.chromium.org/1553303003
This commit is contained in:
msarett 2016-01-07 11:03:25 -08:00 committed by Commit bot
parent c7e211acd0
commit 133eaaacdd
2 changed files with 8 additions and 7 deletions
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5
src/codec/SkCodec_libpng.cpp
View File

@ -259,8 +259,9 @@ static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
png_set_read_fn(png_ptr, static_cast<void*>(stream), sk_read_fn);
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
// FIXME: Does this need to be installed so early?
// hookup our chunkReader so we can see any user-chunks the caller may be interested in
// Hookup our chunkReader so we can see any user-chunks the caller may be interested in.
// This needs to be installed before we read the png header. Android may store ninepatch
// chunks in the header.
if (chunkReader) {
png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_ALWAYS, (png_byte*)"", 0);
png_set_read_user_chunk_fn(png_ptr, (png_voidp) chunkReader, sk_read_user_chunk);

10
tests/CodexTest.cpp
View File

@ -742,17 +742,17 @@ DEF_TEST(Codec_pngChunkReader, r) {
// Create some chunks that match the Android framework's use.
static png_unknown_chunk gUnknowns[] = {
{ "npOl", (png_byte*)"outline", sizeof("outline"), PNG_HAVE_PLTE },
{ "npLb", (png_byte*)"layoutBounds", sizeof("layoutBounds"), PNG_HAVE_PLTE },
{ "npTc", (png_byte*)"ninePatchData", sizeof("ninePatchData"), PNG_HAVE_PLTE },
{ "npOl", (png_byte*)"outline", sizeof("outline"), PNG_HAVE_IHDR },
{ "npLb", (png_byte*)"layoutBounds", sizeof("layoutBounds"), PNG_HAVE_IHDR },
{ "npTc", (png_byte*)"ninePatchData", sizeof("ninePatchData"), PNG_HAVE_IHDR },
};
png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS, (png_byte*)"npOl\0npLb\0npTc\0", 3);
png_set_unknown_chunks(png, info, gUnknowns, SK_ARRAY_COUNT(gUnknowns));
#if PNG_LIBPNG_VER < 10600
/* Deal with unknown chunk location bug in 1.5.x and earlier */
png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_PLTE);
png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_PLTE);
png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR);
png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR);
#endif
png_write_info(png, info);