translators/shared/BaseTranslator.cpp

234 // Determines if the data in inSource is in the
236 // info about the data in inSource to outInfo and pheader.
240 // Parameters:	inSource,	The source of the image data
245 //				amtread,	Amount of data read from inSource
252 //							it is read in from inSource
266 BaseTranslator::identify_bits_header(BPositionIO *inSource,
273 	if (inSource->Read(
350 // Parameters:	inSource,	where the data to examine is
356 //							the data in inSource to be
366 //								the data in inSource
377 BaseTranslator::BitsCheck(BPositionIO *inSource, BMessage *ioExtension,
393 	if (inSource->Read(ch, 4) != 4)
395 	inSource->Seek(-4, SEEK_CUR);
412 BaseTranslator::BitsIdentify(BPositionIO *inSource,
416 	status_t result = BitsCheck(inSource, ioExtension, outType);
419 		result = identify_bits_header(inSource, outInfo, &bitmap);
426 		result = DerivedIdentify(inSource, inFormat, ioExtension,
436 // Examines the data from inSource and determines if it is in a
441 // Parameters:	inSource,	where the data to examine is
443 //				inFormat,	a hint about the data in inSource,
450 //							inSource and how well this translator
454 //							the data in inSource to be
460 //								the data in inSource
471 BaseTranslator::Identify(BPositionIO *inSource,
477 			return BitsIdentify(inSource, inFormat, ioExtension,
481 			return DerivedIdentify(inSource, inFormat, ioExtension,
490 // Convert the data in inSource from the Be Bitmap format ('bits')
495 // Parameters:	inSource,	the bits data to translate
498 //							inSource
501 //							inSource
518 BaseTranslator::translate_from_bits_to_bits(BPositionIO *inSource,
525 	result = identify_bits_header(inSource, NULL, &bitsHeader);
546 			rd = inSource->Read(buf, 1024);
552 				rd = inSource->Read(buf, std::min((uint32)1024,
569 BaseTranslator::BitsTranslate(BPositionIO *inSource,
573 	status_t result = BitsCheck(inSource, ioExtension, outType);
575 		result = translate_from_bits_to_bits(inSource, outType,
579 		result = DerivedTranslate(inSource, inInfo, ioExtension, outType,
589 // Translates the data in inSource to the type outType and stores
594 // Parameters:	inSource,	the data to be translated
596 //				inInfo,	hint about the data in inSource (not used)
601 //				outType,	the type to convert inSource to
618 BaseTranslator::Translate(BPositionIO *inSource,
624 			return BitsTranslate(inSource, inInfo, ioExtension, outType,
628 			return DerivedTranslate(inSource, inInfo, ioExtension, outType,
700 BaseTranslator::DerivedIdentify(BPositionIO *inSource,
709 BaseTranslator::DerivedTranslate(BPositionIO *inSource,
732 translate_direct_copy(BPositionIO *inSource, BPositionIO *outDestination)
736 	ssize_t ret = inSource->Read(buffer, kbufsize);
739 		ret = inSource->Read(buffer, kbufsize);