Inheritance diagram for DJDecompressIJG8Bit:
Public Member Functions | |
| DJDecompressIJG8Bit (const DJCodecParameter &cp, OFBool isYBR) | |
| constructor | |
| virtual | ~DJDecompressIJG8Bit () |
| destructor | |
| virtual OFCondition | init () |
| initializes internal object structures. | |
| virtual OFCondition | decode (Uint8 *compressedFrameBuffer, Uint32 compressedFrameBufferSize, Uint8 *uncompressedFrameBuffer, Uint32 uncompressedFrameBufferSize, OFBool isSigned) |
| suspended decompression routine. | |
| virtual Uint16 | bytesPerSample () const |
| returns the number of bytes per sample that will be written when decoding. | |
| virtual EP_Interpretation | getDecompressedColorModel () const |
| after successful compression, returns the color model of the decompressed image | |
| virtual void | emitMessage (int msg_level) const |
| callback function used to report warning messages and the like. | |
Private Member Functions | |
| DJDecompressIJG8Bit (const DJDecompressIJG8Bit &) | |
| private undefined copy constructor | |
| DJDecompressIJG8Bit & | operator= (const DJDecompressIJG8Bit &) |
| private undefined copy assignment operator | |
| void | cleanup () |
| cleans up cinfo structure, called from destructor and error handlers | |
Private Attributes | |
| const DJCodecParameter * | cparam |
| codec parameters | |
| jpeg_decompress_struct * | cinfo |
| decompression structure | |
| int | suspension |
| position of last suspend | |
| void * | jsampBuffer |
| temporary storage for row buffer during suspension | |
| OFBool | dicomPhotometricInterpretationIsYCbCr |
| Flag indicating if DICOM photometric interpretation is YCbCr. | |
| EP_Interpretation | decompressedColorModel |
| color model after decompression | |
Definition at line 45 of file djdijg8.h.
| DJDecompressIJG8Bit::DJDecompressIJG8Bit | ( | const DJCodecParameter & | cp, | |
| OFBool | isYBR | |||
| ) |
constructor
| cp | codec parameters | |
| isYBR | flag indicating if DICOM photometric interpretation is YCbCr |
| virtual OFCondition DJDecompressIJG8Bit::init | ( | ) | [virtual] |
initializes internal object structures.
Must be called before a new frame is decompressed.
Implements DJDecoder.
| virtual OFCondition DJDecompressIJG8Bit::decode | ( | Uint8 * | compressedFrameBuffer, | |
| Uint32 | compressedFrameBufferSize, | |||
| Uint8 * | uncompressedFrameBuffer, | |||
| Uint32 | uncompressedFrameBufferSize, | |||
| OFBool | isSigned | |||
| ) | [virtual] |
suspended decompression routine.
Decompresses a JPEG frame until finished or out of data. Can be called with new data until a frame is complete.
| compressedFrameBuffer | pointer to compressed input data, must not be NULL | |
| compressedFrameBufferSize | size of buffer, in bytes | |
| uncompressedFrameBuffer | pointer to uncompressed output data, must not be NULL. This buffer must not change between multiple decode() calls for a single frame. | |
| uncompressedFrameBufferSize | size of buffer, in bytes (!) Buffer must be large enough to contain a complete frame. | |
| isSigned | OFTrue, if uncompressed pixel data is signed, OFFalse otherwise |
Implements DJDecoder.
| virtual void DJDecompressIJG8Bit::emitMessage | ( | int | msg_level | ) | const [virtual] |
callback function used to report warning messages and the like.
Should not be called by user code directly.
| msg_level | -1 for warnings, 0 and above for trace messages |