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skia2/tools/skimage_main.cpp
scroggo@google.com c4ebdb03de Force linking with image decoders for images project. 
Previously, each tool that wanted to use image decoders
but did not specifically reference them had to create a
dummy function that references them in order to ensure
they are not stripped by the linker.

Instead of making each tool reference each image decoder,
do it once in SkImageDecoder.cpp. Now each tool will have
image decoders linked in, assuming it includes the images
project.

This fixes a bug where SKPs with encoded data could not
be read by bench_ or render_pictures.

R=djsollen@google.com, robertphillips@google.com

Review URL: https://codereview.chromium.org/14678003

git-svn-id: http://skia.googlecode.com/svn/trunk@8941 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-05-01 21:17:27 +00:00

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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkColorPriv.h"
#include "SkCommandLineFlags.h"
#include "SkData.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkOSFile.h"
#include "SkStream.h"
#include "SkTArray.h"
#include "SkTemplates.h"
DEFINE_string2(readPath, r, "", "Folder(s) and files to decode images. Required.");
DEFINE_string2(writePath, w, "", "Write rendered images into this directory.");
DEFINE_bool(reencode, true, "Reencode the images to test encoding.");
struct Format {
SkImageEncoder::Type fType;
SkImageDecoder::Format fFormat;
const char* fSuffix;
};
static const Format gFormats[] = {
{ SkImageEncoder::kBMP_Type, SkImageDecoder::kBMP_Format, ".bmp" },
{ SkImageEncoder::kGIF_Type, SkImageDecoder::kGIF_Format, ".gif" },
{ SkImageEncoder::kICO_Type, SkImageDecoder::kICO_Format, ".ico" },
{ SkImageEncoder::kJPEG_Type, SkImageDecoder::kJPEG_Format, ".jpg" },
{ SkImageEncoder::kPNG_Type, SkImageDecoder::kPNG_Format, ".png" },
{ SkImageEncoder::kWBMP_Type, SkImageDecoder::kWBMP_Format, ".wbmp" },
{ SkImageEncoder::kWEBP_Type, SkImageDecoder::kWEBP_Format, ".webp" }
};
static SkImageEncoder::Type format_to_type(SkImageDecoder::Format format) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFormats); i++) {
if (gFormats[i].fFormat == format) {
return gFormats[i].fType;
}
}
return SkImageEncoder::kUnknown_Type;
}
static const char* suffix_for_type(SkImageEncoder::Type type) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFormats); i++) {
if (gFormats[i].fType == type) {
return gFormats[i].fSuffix;
}
}
return "";
}
static SkImageDecoder::Format guess_format_from_suffix(const char suffix[]) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFormats); i++) {
if (strcmp(suffix, gFormats[i].fSuffix) == 0) {
return gFormats[i].fFormat;
}
}
return SkImageDecoder::kUnknown_Format;
}
static void make_outname(SkString* dst, const char outDir[], const char src[],
const char suffix[]) {
dst->set(outDir);
const char* start = strrchr(src, '/');
if (start) {
start += 1; // skip the actual last '/'
} else {
start = src;
}
dst->append(start);
if (!dst->endsWith(suffix)) {
const char* cstyleDst = dst->c_str();
const char* dot = strrchr(cstyleDst, '.');
if (dot != NULL) {
int32_t index = SkToS32(dot - cstyleDst);
dst->remove(index, dst->size() - index);
}
dst->append(suffix);
}
}
// Store the names of the filenames to report later which ones failed, succeeded, and were
// invalid.
static SkTArray<SkString, false> gInvalidStreams;
static SkTArray<SkString, false> gMissingCodecs;
static SkTArray<SkString, false> gDecodeFailures;
static SkTArray<SkString, false> gEncodeFailures;
static SkTArray<SkString, false> gSuccessfulDecodes;
static bool write_bitmap(const char outName[], SkBitmap* bm) {
SkBitmap bitmap8888;
if (SkBitmap::kARGB_8888_Config != bm->config()) {
if (!bm->copyTo(&bitmap8888, SkBitmap::kARGB_8888_Config)) {
return false;
}
bm = &bitmap8888;
}
// FIXME: This forces all pixels to be opaque, like the many implementations
// of force_all_opaque. These should be unified if they cannot be eliminated.
SkAutoLockPixels lock(*bm);
for (int y = 0; y < bm->height(); y++) {
for (int x = 0; x < bm->width(); x++) {
*bm->getAddr32(x, y) |= (SK_A32_MASK << SK_A32_SHIFT);
}
}
return SkImageEncoder::EncodeFile(outName, *bm, SkImageEncoder::kPNG_Type, 100);
}
static void decodeFileAndWrite(const char srcPath[], const SkString* writePath) {
SkBitmap bitmap;
SkFILEStream stream(srcPath);
if (!stream.isValid()) {
gInvalidStreams.push_back().set(srcPath);
return;
}
SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
if (NULL == codec) {
gMissingCodecs.push_back().set(srcPath);
return;
}
SkAutoTDelete<SkImageDecoder> ad(codec);
stream.rewind();
if (!codec->decode(&stream, &bitmap, SkBitmap::kARGB_8888_Config,
SkImageDecoder::kDecodePixels_Mode)) {
gDecodeFailures.push_back().set(srcPath);
return;
}
gSuccessfulDecodes.push_back().printf("%s [%d %d]", srcPath, bitmap.width(), bitmap.height());
if (FLAGS_reencode) {
// Encode to the format the file was originally in, or PNG if the encoder for the same
// format is unavailable.
SkImageDecoder::Format format = codec->getFormat();
if (SkImageDecoder::kUnknown_Format == format) {
if (stream.rewind()) {
format = SkImageDecoder::GetStreamFormat(&stream);
}
if (SkImageDecoder::kUnknown_Format == format) {
const char* dot = strrchr(srcPath, '.');
if (NULL != dot) {
format = guess_format_from_suffix(dot);
}
if (SkImageDecoder::kUnknown_Format == format) {
SkDebugf("Could not determine type for '%s'\n", srcPath);
format = SkImageDecoder::kPNG_Format;
}
}
} else {
SkASSERT(!stream.rewind() || SkImageDecoder::GetStreamFormat(&stream) == format);
}
SkImageEncoder::Type type = format_to_type(format);
// format should never be kUnknown_Format, so type should never be kUnknown_Type.
SkASSERT(type != SkImageEncoder::kUnknown_Type);
SkImageEncoder* encoder = SkImageEncoder::Create(type);
if (NULL == encoder) {
type = SkImageEncoder::kPNG_Type;
encoder = SkImageEncoder::Create(type);
SkASSERT(encoder);
}
SkAutoTDelete<SkImageEncoder> ade(encoder);
// Encode to a stream.
SkDynamicMemoryWStream wStream;
if (!encoder->encodeStream(&wStream, bitmap, 100)) {
gEncodeFailures.push_back().printf("Failed to reencode %s to type '%s'", srcPath,
suffix_for_type(type));
return;
}
SkAutoTUnref<SkData> data(wStream.copyToData());
if (writePath != NULL && type != SkImageEncoder::kPNG_Type) {
// Write the encoded data to a file. Do not write to PNG, which will be written later,
// regardless of the input format.
SkString outPath;
make_outname(&outPath, writePath->c_str(), srcPath, suffix_for_type(type));
SkFILEWStream file(outPath.c_str());
if(file.write(data->data(), data->size())) {
gSuccessfulDecodes.push_back().appendf("\twrote %s", outPath.c_str());
} else {
gEncodeFailures.push_back().printf("Failed to write %s", outPath.c_str());
}
}
// Ensure that the reencoded data can still be decoded.
SkMemoryStream memStream(data);
SkBitmap redecodedBitmap;
SkImageDecoder::Format formatOnSecondDecode;
if (SkImageDecoder::DecodeStream(&memStream, &redecodedBitmap, SkBitmap::kNo_Config,
SkImageDecoder::kDecodePixels_Mode,
&formatOnSecondDecode)) {
SkASSERT(format_to_type(formatOnSecondDecode) == type);
} else {
gDecodeFailures.push_back().printf("Failed to redecode %s after reencoding to '%s'",
srcPath, suffix_for_type(type));
}
}
if (writePath != NULL) {
SkString outPath;
make_outname(&outPath, writePath->c_str(), srcPath, ".png");
if (write_bitmap(outPath.c_str(), &bitmap)) {
gSuccessfulDecodes.push_back().appendf("\twrote %s", outPath.c_str());
} else {
gEncodeFailures.push_back().set(outPath);
}
}
}
///////////////////////////////////////////////////////////////////////////////
// If strings is not empty, print title, followed by each string on its own line starting
// with a tab.
// @return bool True if strings had at least one entry.
static bool print_strings(const char* title, const SkTArray<SkString, false>& strings) {
if (strings.count() > 0) {
SkDebugf("%s:\n", title);
for (int i = 0; i < strings.count(); i++) {
SkDebugf("\t%s\n", strings[i].c_str());
}
SkDebugf("\n");
return true;
}
return false;
}
int tool_main(int argc, char** argv);
int tool_main(int argc, char** argv) {
SkCommandLineFlags::SetUsage("Decode files, and optionally write the results to files.");
SkCommandLineFlags::Parse(argc, argv);
if (FLAGS_readPath.count() < 1) {
SkDebugf("Folder(s) or image(s) to decode are required.\n");
return -1;
}
SkAutoGraphics ag;
SkString outDir;
SkString* outDirPtr;
if (FLAGS_writePath.count() == 1) {
outDir.set(FLAGS_writePath[0]);
if (outDir.c_str()[outDir.size() - 1] != '/') {
outDir.append("/");
}
outDirPtr = &outDir;
} else {
outDirPtr = NULL;
}
for (int i = 0; i < FLAGS_readPath.count(); i++) {
if (strlen(FLAGS_readPath[i]) < 1) {
break;
}
SkOSFile::Iter iter(FLAGS_readPath[i]);
SkString filename;
if (iter.next(&filename)) {
SkString directory(FLAGS_readPath[i]);
if (directory[directory.size() - 1] != '/') {
directory.append("/");
}
do {
SkString fullname(directory);
fullname.append(filename);
decodeFileAndWrite(fullname.c_str(), outDirPtr);
} while (iter.next(&filename));
} else {
decodeFileAndWrite(FLAGS_readPath[i], outDirPtr);
}
}
// Add some space, since codecs may print warnings without newline.
SkDebugf("\n\n");
bool failed = print_strings("Invalid files", gInvalidStreams);
failed |= print_strings("Missing codec", gMissingCodecs);
failed |= print_strings("Failed to decode", gDecodeFailures);
failed |= print_strings("Failed to encode", gEncodeFailures);
print_strings("Decoded", gSuccessfulDecodes);
return failed ? -1 : 0;
}
#if !defined SK_BUILD_FOR_IOS
int main(int argc, char * const argv[]) {
return tool_main(argc, (char**) argv);
}
#endif
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