Reset the major parameters - Called by JFIF Decoder when we begin a new file TODO: Consider merging with Reset() POST: - m_anSofSampFactH[] - m_anSofS

Set the AVI mode flag for this file POST: - m_bAvi - m_bAviMjpeg

Set the detailed scan decode settings (VLC) INPUT: - bDetail = Enable for detailed scan VLC reporting - nX = Start of detailed scan decode MCU

Set a DHT table entry and associated lookup table - Configures the fast lookup table for short code bitstrings INPUT: - nDestId = DHT destination t

Assign the size of the DHT table INPUT: - nDestId = Destination DHT table ID (From DHT:Th, range 0..3) - nClass = Select between DC and AC table

Set a DHT table for a scan image component index - The DHT Table select array is stored as: m_anDhtTblSel[0][1,2,3] for DC m_anDhtTblSel[1][1,2,3] for

Set a DQT table for a frame image component identifier INPUT: - nCompInd = Component index. Based on m_nSofNumComps_Nf-1 (ie. 0..254) - nTbl = D

Is this the first time running the application? If so, we skip certain warning messages (such as lack of existing user DB file)

TODO

Add a block to the block marker list - Also report out the YCC DC value for the block INPUT: - nBlkX = 8x8 block X coordinate - nBlkY = 8x8 b

Set the initial file offset

Get the precision field INPUT: - nPrecision = DCT sample precision (typically 8 or 12) POST: - m_nPrecision

Set the Preview MCU insert UNUSED

Update the preview mode (affects channel display) INPUT: - nMode = Mode used in channel display (eg. NONE, RGB, YCC) See PREVIEW_* constants

Toggle the preview MCU grid setting POST: - m_bViewOverlaysMcuGrid

Update any level shifts for the preview display INPUT: - nMcuX = MCU index in X direction - nMcuY = MCU index in Y direction - nY = DC shif

Change the current zoom level - Supports either direct setting of the level or an increment/decrement operation INPUT: - bInc = Flag to increment

Set the sampling factor for an image component INPUT: - nCompInd = Component index from Nf (ie. 1..255) - nSampFactH = Sampling factor in horizon

Update the file position text INPUT: - strText = File position text

Update the MCU status text INPUT: - strText = MCU indicator text

Update the status bar text INPUT: - str = New text to display on status bar PRE: - m_pStatBar

Update the YCC status text INPUT: - strText = Status text to display

Save the view pointer (from View init)

This is generally called after app initializes and registry has just been loaded.

Main draw routine for the image - Draws the preview image with frame - Draws any histogram - Draws a title - Draws any MCU overlays / grid INPUT: - p

Print out a header for the current JFIF marker code

Replaces the direct buffer access with a managed refillable window/cache. - Support for 1-byte access only - Support for overlays (optional) INPUT: -

Read an unsigned integer (4B) from the buffer

Read a null-terminated string from the buffer/cache at the indicated file offset. - Does not affect the current file pointer nPosition - String length

Attempt to read a line from the buffer This is a replacement for CStdioFile::ReadLine() Both 16-bit unicode and 8-bit SBCS encoding modes are supporte

Read a null-terminated 16-bit unicode string from the buffer/cache at the indicated file offset. - FIXME: Replace faked out unicode-to-ASCII conversio

Write an unsigned integer (4B) to the buffer

Return true if we managed to write entire string including terminator without overrunning nMaxBytes

Add a byte to the scan buffer from the file - Handle stuff bytes - Handle restart markers PRE: - m_nScanBuffPtr POST: - m_nRestartRead - m_nRestartLa

Refill the scan buffer as needed

Ensure that the file system path exists, create the nested subdirectories as required

Perform conversion from 2 bytes into half-word with endian byte-swapping support PRE: - m_nImgExifEndian Byte swap mode (0=little, 1=big) INPUT: -

Perform conversion from 4 bytes into UINT32 with endian byte-swapping support PRE: - m_nImgExifEndian Byte swap mode (0=little, 1=big) INPUT: - nBy

Initialize the signature database array sizes PRE: - m_sSigList[] - m_sExcMmNoMkrList[] - m_sExcMmIsEditList[] - m_sSwIjgList[] - m_sXComSwList[] PO

Initialize the log

///////////// ctor: initialize most stuff to NULL

Constructor

Define the defaults for the application configuration

/

Calculate RGB pixel map from selected channels of YCC pixel map PRE: - m_pPixValY - m_pPixValCb - m_pPixValCr POST: - m_pDibTemp NOTE: - Channels are

Recalcs the full image based on the original YCC pixmap - Also locate the brightest pixel. - Note that we cannot do the brightest pixel search when we

///////////// Internal callback proc used for SHBrowseForFolder passes control to appropriate virtual function after attaching browser window.

Color conversion clipping (RGB) - Input RGB triplet in floats - Expect range to be 0..255 - Return RGB triplet in bytes - Report if it is out of range

Color conversion clipping - Process the pre-clipped YCC values and ensure they have been clipped into the valid region INPUT: - nMcuX = MCU x coor

Create static wrapper for B_Buf callback function

Create static wrapper for I_LookupFilePosPix callback function

Extract the specified channel INPUT: - nMode = Channel(s) to extract from - sSrc = Color representations (YCC & RGB) for pixel OUTPUT: - sDst

Check the End-User License Agreement status - Ensure that the EULA has been previously signed - If EULA hasn't been signed, then show dialog box POST

Test the scan error flag and, if set, report out the position INPUT: - nMcuX = MCU x coordinate - nMcuY = MCU y coordinate - nCssIndH = Chrom