OLD | NEW |
(Empty) | |
| 1 /* |
| 2 * Copyright 2014 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 "SkCommandLineFlags.h" |
| 9 #include "SkPicture.h" |
| 10 #include "SkPicturePlayback.h" |
| 11 #include "SkStream.h" |
| 12 |
| 13 DEFINE_string2(input, i, "", "skp on which to report"); |
| 14 DEFINE_bool2(version, v, true, "version"); |
| 15 DEFINE_bool2(width, w, true, "width"); |
| 16 DEFINE_bool2(height, h, true, "height"); |
| 17 DEFINE_bool2(tags, t, true, "tags"); |
| 18 DEFINE_bool2(quiet, q, false, "quiet"); |
| 19 |
| 20 // This tool can print simple information about an SKP but its main use |
| 21 // is just to check if an SKP has been truncated during the recording |
| 22 // process. |
| 23 // return codes: |
| 24 static const int kSuccess = 0; |
| 25 static const int kTruncatedFile = 1; |
| 26 static const int kNotAnSKP = 2; |
| 27 static const int kInvalidTag = 3; |
| 28 static const int kMissingInput = 4; |
| 29 static const int kIOError = 5; |
| 30 |
| 31 int tool_main(int argc, char** argv); |
| 32 int tool_main(int argc, char** argv) { |
| 33 SkCommandLineFlags::SetUsage("Prints information about an skp file"); |
| 34 SkCommandLineFlags::Parse(argc, argv); |
| 35 |
| 36 if (FLAGS_input.count() != 1) { |
| 37 if (!FLAGS_quiet) { |
| 38 SkDebugf("Missing input file\n"); |
| 39 } |
| 40 return kMissingInput; |
| 41 } |
| 42 |
| 43 SkFILEStream stream(FLAGS_input[0]); |
| 44 if (!stream.isValid()) { |
| 45 if (!FLAGS_quiet) { |
| 46 SkDebugf("Couldn't open file\n"); |
| 47 } |
| 48 return kIOError; |
| 49 } |
| 50 |
| 51 size_t totStreamSize = stream.getLength(); |
| 52 |
| 53 SkPictInfo info; |
| 54 if (!SkPicture::InternalOnly_StreamIsSKP(&stream, &info)) { |
| 55 return kNotAnSKP; |
| 56 } |
| 57 |
| 58 if (FLAGS_version && !FLAGS_quiet) { |
| 59 SkDebugf("Version: %d\n", info.fVersion); |
| 60 } |
| 61 if (FLAGS_width && !FLAGS_quiet) { |
| 62 SkDebugf("Width: %d\n", info.fWidth); |
| 63 } |
| 64 if (FLAGS_height && !FLAGS_quiet) { |
| 65 SkDebugf("Height: %d\n", info.fHeight); |
| 66 } |
| 67 |
| 68 if (!stream.readBool()) { |
| 69 // If we read true there's a picture playback object flattened |
| 70 // in the file; if false, there isn't a playback, so we're done |
| 71 // reading the file. |
| 72 return kSuccess; |
| 73 } |
| 74 |
| 75 for (;;) { |
| 76 uint32_t tag = stream.readU32(); |
| 77 if (SK_PICT_EOF_TAG == tag) { |
| 78 break; |
| 79 } |
| 80 |
| 81 uint32_t chunkSize = stream.readU32(); |
| 82 size_t curPos = stream.getPosition(); |
| 83 |
| 84 // "move" doesn't error out when seeking beyond the end of file |
| 85 // so we need a preemptive check here. |
| 86 if (curPos+chunkSize > totStreamSize) { |
| 87 if (!FLAGS_quiet) { |
| 88 SkDebugf("truncated file\n"); |
| 89 } |
| 90 return kTruncatedFile; |
| 91 } |
| 92 |
| 93 // Not all the tags store the chunk size (in bytes). Three |
| 94 // of them store tag-specific size information (e.g., number of |
| 95 // fonts) instead. This forces us to early exit when those |
| 96 // chunks are encountered. |
| 97 switch (tag) { |
| 98 case SK_PICT_READER_TAG: |
| 99 if (FLAGS_tags && !FLAGS_quiet) { |
| 100 SkDebugf("SK_PICT_READER_TAG %d\n", chunkSize); |
| 101 } |
| 102 break; |
| 103 case SK_PICT_FACTORY_TAG: |
| 104 if (FLAGS_tags && !FLAGS_quiet) { |
| 105 SkDebugf("SK_PICT_FACTORY_TAG %d\n", chunkSize); |
| 106 SkDebugf("Exiting early due to format limitations\n"); |
| 107 } |
| 108 return kSuccess; // TODO: need to store size in bytes |
| 109 break; |
| 110 case SK_PICT_TYPEFACE_TAG: |
| 111 if (FLAGS_tags && !FLAGS_quiet) { |
| 112 SkDebugf("SK_PICT_TYPEFACE_TAG %d\n", chunkSize); |
| 113 SkDebugf("Exiting early due to format limitations\n"); |
| 114 } |
| 115 return kSuccess; // TODO: need to store size in bytes |
| 116 break; |
| 117 case SK_PICT_PICTURE_TAG: |
| 118 if (FLAGS_tags && !FLAGS_quiet) { |
| 119 SkDebugf("SK_PICT_PICTURE_TAG %d\n", chunkSize); |
| 120 SkDebugf("Exiting early due to format limitations\n"); |
| 121 } |
| 122 return kSuccess; // TODO: need to store size in bytes |
| 123 break; |
| 124 case SK_PICT_BUFFER_SIZE_TAG: |
| 125 if (FLAGS_tags && !FLAGS_quiet) { |
| 126 SkDebugf("SK_PICT_BUFFER_SIZE_TAG %d\n", chunkSize); |
| 127 } |
| 128 break; |
| 129 default: |
| 130 if (!FLAGS_quiet) { |
| 131 SkDebugf("Unknown tag %d\n", chunkSize); |
| 132 } |
| 133 return kInvalidTag; |
| 134 } |
| 135 |
| 136 if (!stream.move(chunkSize)) { |
| 137 if (!FLAGS_quiet) { |
| 138 SkDebugf("seek error\n"); |
| 139 } |
| 140 return kTruncatedFile; |
| 141 } |
| 142 } |
| 143 |
| 144 return kSuccess; |
| 145 } |
| 146 |
| 147 #if !defined SK_BUILD_FOR_IOS |
| 148 int main(int argc, char * const argv[]) { |
| 149 return tool_main(argc, (char**) argv); |
| 150 } |
| 151 #endif |
OLD | NEW |