Inheritance diagram for DJCompressIJG8Bit:
Public Member Functions | |
DJCompressIJG8Bit (const DJCodecParameter &cp, EJ_Mode mode, Uint8 quality) | |
constructor for lossy JPEG | |
DJCompressIJG8Bit (const DJCodecParameter &cp, EJ_Mode mode, int prediction, int ptrans) | |
constructor for lossless JPEG | |
virtual | ~DJCompressIJG8Bit () |
destructor | |
virtual OFCondition | encode (Uint16 columns, Uint16 rows, EP_Interpretation interpr, Uint16 samplesPerPixel, Uint16 *image_buffer, Uint8 *&to, Uint32 &length) |
single frame compression routine for 16-bit raw pixel data. | |
virtual OFCondition | encode (Uint16 columns, Uint16 rows, EP_Interpretation interpr, Uint16 samplesPerPixel, Uint8 *image_buffer, Uint8 *&to, Uint32 &length) |
single frame compression routine for 8-bit raw pixel data. | |
virtual Uint16 | bytesPerSample () const |
returns the number of bytes per sample that will be expected when encoding. | |
virtual Uint16 | bitsPerSample () const |
returns the number of bits per sample that will be expected when encoding. | |
void | initDestination (jpeg_compress_struct *cinfo) |
callback for IJG compress destination manager. | |
int | emptyOutputBuffer (jpeg_compress_struct *cinfo) |
callback for IJG compress destination manager. | |
void | termDestination (jpeg_compress_struct *cinfo) |
callback for IJG compress destination manager. | |
virtual void | emitMessage (void *arg, int msg_level) const |
callback function used to report warning messages and the like. | |
Private Member Functions | |
DJCompressIJG8Bit (const DJCompressIJG8Bit &) | |
private undefined copy constructor | |
DJCompressIJG8Bit & | operator= (const DJCompressIJG8Bit &) |
private undefined copy assignment operator | |
void | cleanup () |
cleans up pixelDataList, called from destructor and error handlers | |
Private Attributes | |
const DJCodecParameter * | cparam |
codec parameters | |
Uint8 | quality |
for lossy compression, defines compression quality factor | |
int | psv |
for lossless compression, defines selection value | |
int | pt |
for lossless compression, defines point transform | |
EJ_Mode | modeofOperation |
enum for mode of operation (baseline, sequential, progressive etc.) | |
OFList< unsigned char * > | pixelDataList |
list of compressed pixel data blocks | |
size_t | bytesInLastBlock |
filled number of bytes in last block in pixelDataList |
Definition at line 46 of file djeijg8.h.
DJCompressIJG8Bit::DJCompressIJG8Bit | ( | const DJCodecParameter & | cp, | |
EJ_Mode | mode, | |||
Uint8 | quality | |||
) |
constructor for lossy JPEG
cp | codec parameters | |
mode | mode of operation | |
quality | compression quality |
DJCompressIJG8Bit::DJCompressIJG8Bit | ( | const DJCodecParameter & | cp, | |
EJ_Mode | mode, | |||
int | prediction, | |||
int | ptrans | |||
) |
constructor for lossless JPEG
cp | codec parameters | |
prediction | predictor | |
ptrans | point transform |
virtual OFCondition DJCompressIJG8Bit::encode | ( | Uint16 | columns, | |
Uint16 | rows, | |||
EP_Interpretation | interpr, | |||
Uint16 | samplesPerPixel, | |||
Uint16 * | image_buffer, | |||
Uint8 *& | to, | |||
Uint32 & | length | |||
) | [virtual] |
single frame compression routine for 16-bit raw pixel data.
May only be called if bytesPerSample() == 2.
columns | columns of frame | |
rows | rows of frame | |
interpr | photometric interpretation of input frame | |
samplesPerPixel | samples per pixel of input frame | |
image_buffer | pointer to frame buffer | |
to | compressed frame returned in this parameter upon success | |
length | length of compressed frame (in bytes) returned in this parameter upon success; length guaranteed to be always even. |
Implements DJEncoder.
virtual OFCondition DJCompressIJG8Bit::encode | ( | Uint16 | columns, | |
Uint16 | rows, | |||
EP_Interpretation | interpr, | |||
Uint16 | samplesPerPixel, | |||
Uint8 * | image_buffer, | |||
Uint8 *& | to, | |||
Uint32 & | length | |||
) | [virtual] |
single frame compression routine for 8-bit raw pixel data.
May only be called if bytesPerSample() == 1.
columns | columns of frame | |
rows | rows of frame | |
interpr | photometric interpretation of input frame | |
samplesPerPixel | samples per pixel of input frame | |
image_buffer | pointer to frame buffer | |
to | compressed frame returned in this parameter upon success | |
length | length of compressed frame (in bytes) returned in this parameter upon success; length guaranteed to be always even. |
Implements DJEncoder.
void DJCompressIJG8Bit::initDestination | ( | jpeg_compress_struct * | cinfo | ) |
callback for IJG compress destination manager.
Internal use only, not to be called by client code.
cinfo | pointer to compress info |
int DJCompressIJG8Bit::emptyOutputBuffer | ( | jpeg_compress_struct * | cinfo | ) |
callback for IJG compress destination manager.
Internal use only, not to be called by client code.
cinfo | pointer to compress info |
void DJCompressIJG8Bit::termDestination | ( | jpeg_compress_struct * | cinfo | ) |
callback for IJG compress destination manager.
Internal use only, not to be called by client code.
cinfo | pointer to compress info |
virtual void DJCompressIJG8Bit::emitMessage | ( | void * | arg, | |
int | msg_level | |||
) | const [virtual] |
callback function used to report warning messages and the like.
Should not be called by user code directly.
arg | opaque pointer to JPEG compress structure | |
msg_level | -1 for warnings, 0 and above for trace messages |