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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkDebugCanvas.h"
#include "SkDevice.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkOSFile.h"
#include "SkPicture.h"
#include "SkPicturePlayback.h"
#include "SkPictureRecord.h"
#include "SkStream.h"
#include "picture_utils.h"
#include "path_utils.h"
static void usage() {
SkDebugf("Usage: filter -i inFile [-o outFile] [--input-dir path] [--output-dir path]\n");
SkDebugf(" [-h|--help]\n\n");
SkDebugf(" -i inFile : file to file.\n");
SkDebugf(" -o outFile : result of filtering.\n");
SkDebugf(" --input-dir : process all files in dir with .skp extension.\n");
SkDebugf(" --output-dir : results of filtering the input dir.\n");
SkDebugf(" -h|--help : Show this help message.\n");
}
// Is the supplied paint simply a color?
static bool is_simple(const SkPaint& p) {
return NULL == p.getPathEffect() &&
NULL == p.getShader() &&
NULL == p.getXfermode() &&
NULL == p.getMaskFilter() &&
NULL == p.getColorFilter() &&
NULL == p.getRasterizer() &&
NULL == p.getLooper() &&
NULL == p.getImageFilter();
}
// Check for:
// SAVE_LAYER
// DRAW_BITMAP_RECT_TO_RECT
// RESTORE
// where the saveLayer's color can be moved into the drawBitmapRect
static bool check_0(const SkTDArray<SkDrawCommand*>& commands, int curCommand) {
if (SAVE_LAYER != commands[curCommand]->getType() ||
commands.count() <= curCommand+2 ||
DRAW_BITMAP_RECT_TO_RECT != commands[curCommand+1]->getType() ||
RESTORE != commands[curCommand+2]->getType())
return false;
SaveLayer* saveLayer = (SaveLayer*) commands[curCommand];
DrawBitmapRect* dbmr = (DrawBitmapRect*) commands[curCommand+1];
const SkPaint* saveLayerPaint = saveLayer->paint();
SkPaint* dbmrPaint = dbmr->paint();
return NULL == saveLayerPaint ||
NULL == dbmrPaint ||
(is_simple(*saveLayerPaint) &&
(SkColorGetR(saveLayerPaint->getColor()) == SkColorGetR(dbmrPaint->getColor())) &&
(SkColorGetG(saveLayerPaint->getColor()) == SkColorGetG(dbmrPaint->getColor())) &&
(SkColorGetB(saveLayerPaint->getColor()) == SkColorGetB(dbmrPaint->getColor())));
}
// Fold the saveLayer's alpha into the drawBitmapRect and remove the saveLayer
// and restore
static void apply_0(const SkTDArray<SkDrawCommand*>& commands, int curCommand) {
SaveLayer* saveLayer = (SaveLayer*) commands[curCommand];
DrawBitmapRect* dbmr = (DrawBitmapRect*) commands[curCommand+1];
Restore* restore = (Restore*) commands[curCommand+2];
const SkPaint* saveLayerPaint = saveLayer->paint();
SkPaint* dbmrPaint = dbmr->paint();
if (NULL == saveLayerPaint) {
saveLayer->setVisible(false);
restore->setVisible(false);
} else if (NULL == dbmrPaint) {
saveLayer->setVisible(false);
dbmr->setPaint(*saveLayerPaint);
restore->setVisible(false);
} else {
saveLayer->setVisible(false);
SkColor newColor = SkColorSetA(dbmrPaint->getColor(),
SkColorGetA(saveLayerPaint->getColor()));
dbmrPaint->setColor(newColor);
restore->setVisible(false);
}
}
// Check for:
// SAVE_LAYER
// SAVE
// CLIP_RECT
// DRAW_BITMAP_RECT_TO_RECT
// RESTORE
// RESTORE
// where the saveLayer's color can be moved into the drawBitmapRect
static bool check_1(const SkTDArray<SkDrawCommand*>& commands, int curCommand) {
if (SAVE_LAYER != commands[curCommand]->getType() ||
commands.count() <= curCommand+5 ||
SAVE != commands[curCommand+1]->getType() ||
CLIP_RECT != commands[curCommand+2]->getType() ||
DRAW_BITMAP_RECT_TO_RECT != commands[curCommand+3]->getType() ||
RESTORE != commands[curCommand+4]->getType() ||
RESTORE != commands[curCommand+5]->getType())
return false;
SaveLayer* saveLayer = (SaveLayer*) commands[curCommand];
DrawBitmapRect* dbmr = (DrawBitmapRect*) commands[curCommand+3];
const SkPaint* saveLayerPaint = saveLayer->paint();
SkPaint* dbmrPaint = dbmr->paint();
return NULL == saveLayerPaint ||
NULL == dbmrPaint ||
(is_simple(*saveLayerPaint) &&
(SkColorGetR(saveLayerPaint->getColor()) == SkColorGetR(dbmrPaint->getColor())) &&
(SkColorGetG(saveLayerPaint->getColor()) == SkColorGetG(dbmrPaint->getColor())) &&
(SkColorGetB(saveLayerPaint->getColor()) == SkColorGetB(dbmrPaint->getColor())));
}
// Fold the saveLayer's alpha into the drawBitmapRect and remove the saveLayer
// and restore
static void apply_1(const SkTDArray<SkDrawCommand*>& commands, int curCommand) {
SaveLayer* saveLayer = (SaveLayer*) commands[curCommand];
DrawBitmapRect* dbmr = (DrawBitmapRect*) commands[curCommand+3];
Restore* restore = (Restore*) commands[curCommand+5];
const SkPaint* saveLayerPaint = saveLayer->paint();
SkPaint* dbmrPaint = dbmr->paint();
if (NULL == saveLayerPaint) {
saveLayer->setVisible(false);
restore->setVisible(false);
} else if (NULL == dbmrPaint) {
saveLayer->setVisible(false);
dbmr->setPaint(*saveLayerPaint);
restore->setVisible(false);
} else {
saveLayer->setVisible(false);
SkColor newColor = SkColorSetA(dbmrPaint->getColor(),
SkColorGetA(saveLayerPaint->getColor()));
dbmrPaint->setColor(newColor);
restore->setVisible(false);
}
}
typedef bool (*PFCheck)(const SkTDArray<SkDrawCommand*>& commands, int curCommand);
typedef void (*PFApply)(const SkTDArray<SkDrawCommand*>& commands, int curCommand);
struct OptTableEntry {
PFCheck fCheck;
PFApply fApply;
int fNumTimesApplied;
} gOptTable[] = {
{ check_0, apply_0, 0 },
{ check_1, apply_1, 0 },
};
static int filter_picture(const SkString& inFile, const SkString& outFile) {
SkPicture* inPicture = NULL;
SkFILEStream inStream(inFile.c_str());
if (inStream.isValid()) {
inPicture = SkNEW_ARGS(SkPicture, (&inStream, NULL, &SkImageDecoder::DecodeStream));
}
if (NULL == inPicture) {
SkDebugf("Could not read file %s\n", inFile.c_str());
return -1;
}
int localCount[SK_ARRAY_COUNT(gOptTable)];
memset(localCount, 0, sizeof(localCount));
SkDebugCanvas debugCanvas(inPicture->width(), inPicture->height());
debugCanvas.setBounds(inPicture->width(), inPicture->height());
inPicture->draw(&debugCanvas);
const SkTDArray<SkDrawCommand*>& commands = debugCanvas.getDrawCommands();
// hide the initial save and restore since replaying the commands will
// re-add them
if (commands.count() > 0) {
commands[0]->setVisible(false);
commands[commands.count()-1]->setVisible(false);
}
for (int i = 0; i < commands.count(); ++i) {
for (size_t opt = 0; opt < SK_ARRAY_COUNT(gOptTable); ++opt) {
if ((*gOptTable[opt].fCheck)(commands, i)) {
(*gOptTable[opt].fApply)(commands, i);
++gOptTable[opt].fNumTimesApplied;
++localCount[opt];
}
}
}
if (!outFile.isEmpty()) {
SkPicture outPicture;
SkCanvas* canvas = outPicture.beginRecording(inPicture->width(), inPicture->height());
debugCanvas.draw(canvas);
outPicture.endRecording();
SkFILEWStream outStream(outFile.c_str());
outPicture.serialize(&outStream);
}
bool someOptFired = false;
for (size_t opt = 0; opt < SK_ARRAY_COUNT(gOptTable); ++opt) {
if (0 != localCount[opt]) {
SkDebugf("%d: %d ", opt, localCount[opt]);
someOptFired = true;
}
}
if (!someOptFired) {
SkDebugf("No opts fired\n");
} else {
SkDebugf("\n");
}
return 0;
}
// This function is not marked as 'static' so it can be referenced externally
// in the iOS build.
int tool_main(int argc, char** argv); // suppress a warning on mac
int tool_main(int argc, char** argv) {
SkGraphics::Init();
if (argc < 3) {
usage();
return -1;
}
SkString inFile, outFile, inDir, outDir;
char* const* stop = argv + argc;
for (++argv; argv < stop; ++argv) {
if (strcmp(*argv, "-i") == 0) {
argv++;
if (argv < stop && **argv) {
inFile.set(*argv);
} else {
SkDebugf("missing arg for -i\n");
usage();
return -1;
}
} else if (strcmp(*argv, "--input-dir") == 0) {
argv++;
if (argv < stop && **argv) {
inDir.set(*argv);
} else {
SkDebugf("missing arg for --input-dir\n");
usage();
return -1;
}
} else if (strcmp(*argv, "--output-dir") == 0) {
argv++;
if (argv < stop && **argv) {
outDir.set(*argv);
} else {
SkDebugf("missing arg for --output-dir\n");
usage();
return -1;
}
} else if (strcmp(*argv, "-o") == 0) {
argv++;
if (argv < stop && **argv) {
outFile.set(*argv);
} else {
SkDebugf("missing arg for -o\n");
usage();
return -1;
}
} else if (strcmp(*argv, "--help") == 0 || strcmp(*argv, "-h") == 0) {
usage();
return 0;
} else {
SkDebugf("unknown arg %s\n", *argv);
usage();
return -1;
}
}
SkOSFile::Iter iter(inDir.c_str(), "skp");
SkString inputFilename, outputFilename;
if (iter.next(&inputFilename)) {
do {
sk_tools::make_filepath(&inFile, inDir, inputFilename);
if (!outDir.isEmpty()) {
sk_tools::make_filepath(&outFile, outDir, inputFilename);
}
SkDebugf("Executing %s\n", inputFilename.c_str());
filter_picture(inFile, outFile);
} while(iter.next(&inputFilename));
} else if (!inFile.isEmpty()) {
filter_picture(inFile, outFile);
} else {
usage();
return -1;
}
for (size_t opt = 0; opt < SK_ARRAY_COUNT(gOptTable); ++opt) {
SkDebugf("opt %d: %d\n", opt, gOptTable[opt].fNumTimesApplied);
}
SkGraphics::Term();
return 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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