render_pdfs_main.cpp revision 58190644c30e1c4aa8e527f3503c58f841e0fcf3
1/* 2 * Copyright 2012 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8#include "SkCanvas.h" 9#include "SkDevice.h" 10#include "SkForceLinking.h" 11#include "SkGraphics.h" 12#include "SkImageEncoder.h" 13#include "SkOSFile.h" 14#include "SkPicture.h" 15#include "SkStream.h" 16#include "SkTArray.h" 17#include "PdfRenderer.h" 18#include "picture_utils.h" 19 20__SK_FORCE_IMAGE_DECODER_LINKING; 21 22#ifdef SK_USE_CDB 23#include "win_dbghelp.h" 24#endif 25 26/** 27 * render_pdfs 28 * 29 * Given list of directories and files to use as input, expects to find .skp 30 * files and it will convert them to .pdf files writing them in the output 31 * directory. 32 * 33 * Returns zero exit code if all .skp files were converted successfully, 34 * otherwise returns error code 1. 35 */ 36 37static const char PDF_FILE_EXTENSION[] = "pdf"; 38static const char SKP_FILE_EXTENSION[] = "skp"; 39 40static void usage(const char* argv0) { 41 SkDebugf("SKP to PDF rendering tool\n"); 42 SkDebugf("\n" 43"Usage: \n" 44" %s <input>... [-w <outputDir>] [--jpegQuality N] \n" 45, argv0); 46 SkDebugf("\n\n"); 47 SkDebugf( 48" input: A list of directories and files to use as input. Files are\n" 49" expected to have the .skp extension.\n\n"); 50 SkDebugf( 51" outputDir: directory to write the rendered pdfs.\n\n"); 52 SkDebugf("\n"); 53 SkDebugf( 54" jpegQuality N: encodes images in JPEG at quality level N, which can\n" 55" be in range 0-100).\n" 56" N = -1 will disable JPEG compression.\n" 57" Default is N = 100, maximum quality.\n\n"); 58 SkDebugf("\n"); 59} 60 61/** Replaces the extension of a file. 62 * @param path File name whose extension will be changed. 63 * @param old_extension The old extension. 64 * @param new_extension The new extension. 65 * @returns false if the file did not has the expected extension. 66 * if false is returned, contents of path are undefined. 67 */ 68static bool replace_filename_extension(SkString* path, 69 const char old_extension[], 70 const char new_extension[]) { 71 if (path->endsWith(old_extension)) { 72 path->remove(path->size() - strlen(old_extension), 73 strlen(old_extension)); 74 if (!path->endsWith(".")) { 75 return false; 76 } 77 path->append(new_extension); 78 return true; 79 } 80 return false; 81} 82 83int gJpegQuality = 100; 84static bool encode_to_dct_stream(SkWStream* stream, const SkBitmap& bitmap, const SkIRect& rect) { 85 if (gJpegQuality == -1) return false; 86 87 SkIRect bitmapBounds; 88 SkBitmap subset; 89 const SkBitmap* bitmapToUse = &bitmap; 90 bitmap.getBounds(&bitmapBounds); 91 if (rect != bitmapBounds) { 92 SkAssertResult(bitmap.extractSubset(&subset, rect)); 93 bitmapToUse = ⊂ 94 } 95 96#if defined(SK_BUILD_FOR_MAC) 97 // Workaround bug #1043 where bitmaps with referenced pixels cause 98 // CGImageDestinationFinalize to crash 99 SkBitmap copy; 100 bitmapToUse->deepCopyTo(©, bitmapToUse->config()); 101 bitmapToUse = © 102#endif 103 104 return SkImageEncoder::EncodeStream(stream, 105 *bitmapToUse, 106 SkImageEncoder::kJPEG_Type, 107 gJpegQuality); 108} 109 110/** Builds the output filename. path = dir/name, and it replaces expected 111 * .skp extension with .pdf extention. 112 * @param path Output filename. 113 * @param name The name of the file. 114 * @returns false if the file did not has the expected extension. 115 * if false is returned, contents of path are undefined. 116 */ 117static bool make_output_filepath(SkString* path, const SkString& dir, 118 const SkString& name) { 119 sk_tools::make_filepath(path, dir, name); 120 return replace_filename_extension(path, 121 SKP_FILE_EXTENSION, 122 PDF_FILE_EXTENSION); 123} 124 125/** Write the output of pdf renderer to a file. 126 * @param outputDir Output dir. 127 * @param inputFilename The skp file that was read. 128 * @param renderer The object responsible to write the pdf file. 129 */ 130static bool write_output(const SkString& outputDir, 131 const SkString& inputFilename, 132 const sk_tools::PdfRenderer& renderer) { 133 if (outputDir.isEmpty()) { 134 SkDynamicMemoryWStream stream; 135 renderer.write(&stream); 136 return true; 137 } 138 139 SkString outputPath; 140 if (!make_output_filepath(&outputPath, outputDir, inputFilename)) { 141 return false; 142 } 143 144 SkFILEWStream stream(outputPath.c_str()); 145 if (!stream.isValid()) { 146 SkDebugf("Could not write to file %s\n", outputPath.c_str()); 147 return false; 148 } 149 renderer.write(&stream); 150 151 return true; 152} 153 154/** Reads an skp file, renders it to pdf and writes the output to a pdf file 155 * @param inputPath The skp file to be read. 156 * @param outputDir Output dir. 157 * @param renderer The object responsible to render the skp object into pdf. 158 */ 159static bool render_pdf(const SkString& inputPath, const SkString& outputDir, 160 sk_tools::PdfRenderer& renderer) { 161 SkString inputFilename; 162 sk_tools::get_basename(&inputFilename, inputPath); 163 164 SkFILEStream inputStream; 165 inputStream.setPath(inputPath.c_str()); 166 if (!inputStream.isValid()) { 167 SkDebugf("Could not open file %s\n", inputPath.c_str()); 168 return false; 169 } 170 171 SkAutoTUnref<SkPicture> picture(SkPicture::CreateFromStream(&inputStream)); 172 173 if (NULL == picture.get()) { 174 SkDebugf("Could not read an SkPicture from %s\n", inputPath.c_str()); 175 return false; 176 } 177 178 SkDebugf("exporting... [%i %i] %s\n", picture->width(), picture->height(), 179 inputPath.c_str()); 180 181 renderer.init(picture); 182 183 renderer.render(); 184 185 bool success = write_output(outputDir, inputFilename, renderer); 186 187 renderer.end(); 188 return success; 189} 190 191/** For each file in the directory or for the file passed in input, call 192 * render_pdf. 193 * @param input A directory or an skp file. 194 * @param outputDir Output dir. 195 * @param renderer The object responsible to render the skp object into pdf. 196 */ 197static int process_input(const SkString& input, const SkString& outputDir, 198 sk_tools::PdfRenderer& renderer) { 199 int failures = 0; 200 if (sk_isdir(input.c_str())) { 201 SkOSFile::Iter iter(input.c_str(), SKP_FILE_EXTENSION); 202 SkString inputFilename; 203 while (iter.next(&inputFilename)) { 204 SkString inputPath; 205 sk_tools::make_filepath(&inputPath, input, inputFilename); 206 if (!render_pdf(inputPath, outputDir, renderer)) { 207 ++failures; 208 } 209 } 210 } else { 211 SkString inputPath(input); 212 if (!render_pdf(inputPath, outputDir, renderer)) { 213 ++failures; 214 } 215 } 216 return failures; 217} 218 219static void parse_commandline(int argc, char* const argv[], 220 SkTArray<SkString>* inputs, 221 SkString* outputDir) { 222 const char* argv0 = argv[0]; 223 char* const* stop = argv + argc; 224 225 for (++argv; argv < stop; ++argv) { 226 if ((0 == strcmp(*argv, "-h")) || (0 == strcmp(*argv, "--help"))) { 227 usage(argv0); 228 exit(-1); 229 } else if (0 == strcmp(*argv, "-w")) { 230 ++argv; 231 if (argv >= stop) { 232 SkDebugf("Missing outputDir for -w\n"); 233 usage(argv0); 234 exit(-1); 235 } 236 *outputDir = SkString(*argv); 237 } else if (0 == strcmp(*argv, "--jpegQuality")) { 238 ++argv; 239 if (argv >= stop) { 240 SkDebugf("Missing argument for --jpegQuality\n"); 241 usage(argv0); 242 exit(-1); 243 } 244 gJpegQuality = atoi(*argv); 245 if (gJpegQuality < -1 || gJpegQuality > 100) { 246 SkDebugf("Invalid argument for --jpegQuality\n"); 247 usage(argv0); 248 exit(-1); 249 } 250 } else { 251 inputs->push_back(SkString(*argv)); 252 } 253 } 254 255 if (inputs->count() < 1) { 256 usage(argv0); 257 exit(-1); 258 } 259} 260 261int tool_main_core(int argc, char** argv); 262int tool_main_core(int argc, char** argv) { 263 SkAutoGraphics ag; 264 SkTArray<SkString> inputs; 265 266 SkAutoTUnref<sk_tools::PdfRenderer> 267 renderer(SkNEW_ARGS(sk_tools::SimplePdfRenderer, (encode_to_dct_stream))); 268 SkASSERT(renderer.get()); 269 270 SkString outputDir; 271 parse_commandline(argc, argv, &inputs, &outputDir); 272 273 int failures = 0; 274 for (int i = 0; i < inputs.count(); i ++) { 275 failures += process_input(inputs[i], outputDir, *renderer); 276 } 277 278 if (failures != 0) { 279 SkDebugf("Failed to render %i PDFs.\n", failures); 280 return 1; 281 } 282 283 return 0; 284} 285 286int tool_main(int argc, char** argv); 287int tool_main(int argc, char** argv) { 288#ifdef SK_USE_CDB 289 setUpDebuggingFromArgs(argv[0]); 290 __try { 291#endif 292 return tool_main_core(argc, argv); 293#ifdef SK_USE_CDB 294 } 295 __except(GenerateDumpAndPrintCallstack(GetExceptionInformation())) 296 { 297 return -1; 298 } 299#endif 300 return 0; 301} 302 303#if !defined SK_BUILD_FOR_IOS 304int main(int argc, char * const argv[]) { 305 return tool_main(argc, (char**) argv); 306} 307#endif 308