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[JBIG2] Fix getting decodeParms when it's an array

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This commit is contained in:
Jonas Jenwald 2013-12-19 20:23:58 +01:00
parent f2b717c637
commit e6c805490b
3 changed files with 21 additions and 1 deletions
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12
src/core/stream.js
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@ -15,7 +15,7 @@
* limitations under the License.
*/
/* globals bytesToString, ColorSpace, Dict, EOF, error, info, Jbig2Image,
JpegImage, JpxImage, Lexer, Util, PDFJS */
JpegImage, JpxImage, Lexer, Util, PDFJS, isArray, warn */
'use strict';
@ -976,6 +976,16 @@ var Jbig2Stream = (function Jbig2StreamClosure() {
var jbig2Image = new Jbig2Image();
var chunks = [], decodeParams = this.dict.get('DecodeParms');
// According to the PDF specification, DecodeParms can be either
// a dictionary, or an array whose elements are dictionaries.
if (isArray(decodeParams)) {
if (decodeParams.length > 1) {
warn('JBIG2 - \'DecodeParms\' array with multiple elements ' +
'not supported.');
}
decodeParams = decodeParams[0];
}
if (decodeParams && decodeParams.has('JBIG2Globals')) {
var globalsStream = decodeParams.get('JBIG2Globals');
var globals = globalsStream.getBytes();