mirror of
https://github.com/FellippeHeitor/InForm.git
synced 2024-05-12 06:50:12 +00:00
Implement LZW decoder
This commit is contained in:
Samuel Gomes
parent
47f51909a8
commit
338232bab2
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@ -10,7 +10,7 @@ $END IF
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$LET INFORM_BI = TRUE
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DECLARE LIBRARY
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FUNCTION __UI_GetPID ALIAS getpid ()
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FUNCTION __UI_GetPID ALIAS getpid
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END DECLARE
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DECLARE CUSTOMTYPE LIBRARY
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@ -91,8 +91,8 @@ $END IF
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ContextMenuIcon = LoadEditorImage("contextmenu.bmp")
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__UI_ClearColor ContextMenuIcon, 0, 0
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'$INCLUDE:'InForm.bi'
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'$INCLUDE:'extensions/GIFPlay.bi'
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'$INCLUDE:'InForm.bi'
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'$INCLUDE:'xp.uitheme'
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'$INCLUDE:'UiEditorPreview.frm'
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@ -165,7 +165,7 @@ SUB __UI_BeforeUpdateDisplay
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END IF
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FOR i = 1 TO UBOUND(AutoPlayGif)
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IF AutoPlayGif(i) THEN GIF_Draw i
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IF AutoPlayGif(i) THEN GIF_Draw i, True
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NEXT
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STATIC prevDefaultButton AS LONG, prevMenuPanelActive AS INTEGER
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@ -2218,7 +2218,7 @@ SUB DeleteSelectedControls
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IF __UI_TotalActiveMenus > 0 AND __UI_ParentMenu(__UI_TotalActiveMenus) = Control(i).ID THEN
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__UI_CloseAllMenus
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END IF
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GIF_Close i
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GIF_Free i
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__UI_DestroyControl Control(i)
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IF MustRefreshMenuBar THEN __UI_RefreshMenuBar
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IF MustRefreshContextMenus THEN RefreshContextMenus
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@ -2388,7 +2388,7 @@ SUB LoadPreview (Destination AS _BYTE)
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IF Disk THEN
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FOR i = UBOUND(Control) TO 1 STEP -1
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IF LEFT$(Control(i).Name, 5) <> "__UI_" THEN
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GIF_Close i
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GIF_Free i
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__UI_DestroyControl Control(i)
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END IF
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NEXT
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@ -2407,7 +2407,7 @@ SUB LoadPreview (Destination AS _BYTE)
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ELSEIF UndoBuffer THEN
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FOR i = UBOUND(Control) TO 1 STEP -1
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IF LEFT$(Control(i).Name, 5) <> "__UI_" THEN
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GIF_Close i
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GIF_Free i
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__UI_DestroyControl Control(i)
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END IF
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NEXT
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@ -2764,7 +2764,7 @@ SUB LoadPreview (Destination AS _BYTE)
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IF NOT CorruptedData THEN
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__UI_FirstSelectedID = FirstToBeSelected
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ELSE
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GIF_Close TempValue
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GIF_Free TempValue
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__UI_DestroyControl Control(TempValue)
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__UI_TotalSelectedControls = __UI_TotalSelectedControls - 1
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END IF
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@ -2810,7 +2810,7 @@ SUB LoadPreviewText
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__UI_AutoRefresh = False
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FOR i = UBOUND(Control) TO 1 STEP -1
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IF LEFT$(Control(i).Name, 5) <> "__UI_" THEN
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GIF_Close i
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GIF_Free i
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__UI_DestroyControl Control(i)
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END IF
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NEXT
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@ -3062,7 +3062,7 @@ SUB LoadPreviewText
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DIM RegisterResult AS _BYTE
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DummyText$ = nextParameter(b$) 'discard first parameter
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DummyText$ = nextParameter(b$)
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RegisterResult = GIF_OpenFile(TempValue, DummyText$)
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RegisterResult = GIF_LoadFromFile(TempValue, DummyText$)
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IF RegisterResult THEN
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IF LogFileLoad THEN PRINT #LogFileNum, "LOAD SUCCESSFUL"
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Text(TempValue) = DummyText$ 'indicates image loaded successfully
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@ -3070,7 +3070,7 @@ SUB LoadPreviewText
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_FREEIMAGE Control(TempValue).HelperCanvas
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END IF
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Control(TempValue).HelperCanvas = _NEWIMAGE(GIF_GetWidth(TempValue), GIF_GetHeight(TempValue), 32)
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GIF_Draw TempValue
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GIF_Draw TempValue, True
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END IF
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ELSEIF b$ = "IF __UI_RegisterResult THEN PlayGif __UI_NewID" OR LEFT$(b$, 8) = "PlayGif " THEN
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IF LogFileLoad THEN PRINT #LogFileNum, "AUTOPLAY GIF"
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@ -3159,11 +3159,11 @@ END SUB
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SUB PreviewLoadImage (This AS __UI_ControlTYPE, fileName$)
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IF LCASE$(RIGHT$(fileName$, 4)) = ".gif" THEN
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DIM tryGif AS _BYTE
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GIF_Close This.ID
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tryGif = GIF_OpenFile(This.ID, fileName$)
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GIF_Free This.ID
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tryGif = GIF_LoadFromFile(This.ID, fileName$)
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IF tryGif THEN
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IF GIF_GetTotalFrames(This.ID) = 1 THEN
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GIF_Close This.ID
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GIF_Free This.ID
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ELSE
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Text(This.ID) = fileName$ 'indicates image loaded successfully
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IF This.HelperCanvas < -1 THEN
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@ -3171,12 +3171,12 @@ SUB PreviewLoadImage (This AS __UI_ControlTYPE, fileName$)
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END IF
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This.HelperCanvas = _NEWIMAGE(GIF_GetWidth(This.ID), GIF_GetHeight(This.ID), 32)
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AutoPlayGif(This.ID) = False
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GIF_Draw This.ID
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GIF_Draw This.ID, True
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EXIT SUB
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END IF
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END IF
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END IF
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GIF_Close This.ID
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GIF_Free This.ID
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LoadImage This, fileName$
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END SUB
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@ -3581,7 +3581,7 @@ SUB SavePreview (Destination AS _BYTE)
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b$ = MKI$(-44) + MKI$(LEN(RTRIM$(__UI_KeyCombo(Control(i).KeyCombo).FriendlyCombo))) + RTRIM$(__UI_KeyCombo(Control(i).KeyCombo).FriendlyCombo)
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IF Disk THEN PUT #BinFileNum, , b$ ELSE Clip$ = Clip$ + b$
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END IF
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IF GIF_GetIndex(i) > 0 THEN
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IF GIF_IsLoaded(i) THEN
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'PictureBox has an animated GIF loaded
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b$ = MKI$(-45)
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IF Disk THEN
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@ -8,77 +8,393 @@ $IF GIFPLAY_BAS = UNDEFINED THEN
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'$INCLUDE:'GIFPlay.bi'
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FUNCTION GIF_OpenFile%% (Id AS LONG, fileName AS STRING)
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' This is an internal loading function common for both memory and file loaders
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FUNCTION __GIF_Load%% (Id AS LONG, sf AS StringFileType)
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END FUNCTION
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' Opens a GIF file from a buffer in memory
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FUNCTION GIF_LoadFromMemory%% (Id AS LONG, buffer AS STRING)
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_MESSAGEBOX , "GIF_LoadFromMemory%%"
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DIM sf AS StringFileType
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StringFile_Create sf, buffer
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GIF_LoadFromMemory = __GIF_Load(Id, sf)
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END FUNCTION
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FUNCTION GIF_OpenMemory%% (Id AS LONG, buffer AS STRING)
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' Opens a GIF file from a file on disk
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FUNCTION GIF_LoadFromFile%% (Id AS LONG, fileName AS STRING)
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_MESSAGEBOX STR$(Id), "GIF_LoadFromFile%%"
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DIM sf AS StringFileType
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IF StringFile_Load(sf, fileName) THEN
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GIF_LoadFromFile = __GIF_Load(Id, sf)
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END IF
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END FUNCTION
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SUB GIF_Close (Id AS LONG)
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' Free a GIF and all associated resources
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SUB GIF_Free (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_Free"
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END SUB
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FUNCTION GIF_GetHeight~% (Id AS LONG)
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END FUNCTION
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' Returns the width of the animation in pixels
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FUNCTION GIF_GetWidth~% (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_LoadFromFile%%"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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GIF_GetWidth = __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).W
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END FUNCTION
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' Returns the height of the animation in pixels
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FUNCTION GIF_GetHeight~% (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_GetHeight~%"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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GIF_GetHeight = __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).H
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END FUNCTION
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' Returns the number of currently playing frame
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FUNCTION GIF_GetCurrentFrame~& (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_GetCurrentFrame~&"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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GIF_GetCurrentFrame = __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).currentFrameNumber
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END FUNCTION
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' Returns the total frames in the GIF. If this is 1 then it is a static image
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FUNCTION GIF_GetTotalFrames~& (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_GetTotalFrames~&"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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GIF_GetTotalFrames = __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).totalFrames
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END FUNCTION
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' Sets the playback direction. direction should be -1 or 1
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SUB GIF_SetPlaybackDirection (Id AS LONG, direction AS _BYTE)
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_MESSAGEBOX STR$(Id), "GIF_SetPlaybackDirection"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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IF direction <> 0 THEN __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).direction = SGN(direction)
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END SUB
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' Gets the current playback direction. This can be -1 or 1
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FUNCTION GIF_GetPlaybackDirection%% (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_GetPlaybackDirection%%"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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GIF_GetPlaybackDirection = __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).direction
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END FUNCTION
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' Resume or starts playback
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SUB GIF_Play (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_Play"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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__GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).isPlaying = TRUE
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END SUB
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' Pauses playback. That same frame is served as long as playback is paused
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SUB GIF_Pause (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_Pause"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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__GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).isPlaying = FALSE
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END SUB
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' Stops playing the GIF and resets the cursor to the first frame
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SUB GIF_Stop (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_Stop"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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DIM idx AS LONG: idx = HashTable_LookupLong(__GIFPlayHashTable(), Id)
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__GIFPlay(idx).isPlaying = FALSE
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__GIFPlay(idx).currentFrame = __GIFPlay(idx).firstFrame
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END SUB
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' Return True if GIF is currently playing
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FUNCTION GIF_IsPlaying%% (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_IsPlaying%%"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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GIF_IsPlaying = __GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).isPlaying
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END FUNCTION
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SUB GIF_Draw (Id AS LONG)
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' This draws the current frame on the destination surface @ (0, 0) (stretching the frame if needed)
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' This will also draw the overlay if the playback is stopped / paused
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SUB GIF_Draw (Id AS LONG, shouldStretch AS _BYTE)
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' TODO
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END SUB
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SUB GIF_DrawPro (Id AS LONG, x AS LONG, y AS LONG)
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' This draws the current frame at the specified x, y location on the destination surface (preserving aspect ratio)
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' This will also draw the overlay if the playback is stopped / paused
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SUB GIF_DrawAt (Id AS LONG, x AS LONG, y AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_DrawAt"
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END SUB
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' This returns the current frame (QB64 image) to be played
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' Playback is time sensitive so frames may be skipped or the last frame maybe returned
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' Only use this if you want to do your own rendering
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' Also do not free the image. The library will do that when it is no longer needed
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FUNCTION GIF_GetFrame& (Id AS LONG)
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_MESSAGEBOX STR$(Id), "GIF_GetFrame&"
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END FUNCTION
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' Sets the GIF overlay to enable / disable
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SUB GIF_EnableOverlay (Id AS LONG, isEnabled AS _BYTE)
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_MESSAGEBOX STR$(Id), "GIF_EnableOverlay"
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SHARED __GIFPlayHashTable() AS HashTableType
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SHARED __GIFPlay() AS __GIFPlayType
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__GIFPlay(HashTable_LookupLong(__GIFPlayHashTable(), Id)).overlayEnabled = isEnabled
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END SUB
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' Returns the __GIFPlay index of a loaded GIF using it's ID
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' TODO: Fix line in UiEditorPreview: IF GIF_GetIndex(i) > 0 THEN
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FUNCTION GIF_GetIndex~& (Id AS LONG)
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' Returns TRUE if a GIF with Id is loaded
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FUNCTION GIF_IsLoaded%% (Id AS LONG)
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SHARED __GIFPlayHashTable() AS HashTableType
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GIF_IsLoaded = HashTable_IsKeyPresent(__GIFPlayHashTable(), Id)
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END FUNCTION
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SUB __GIF_CreateBitmap (bmp AS __GIFBitmapType, w AS LONG, h AS LONG)
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bmp.W = w
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bmp.H = h
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bmp.pixels = STRING$(w * h, 0)
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END SUB
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SUB __GIF_BlitBitmap (src AS __GIFBitmapType, dst AS __GIFBitmapType, srcX AS LONG, srcY AS LONG, dstX AS LONG, dstY AS LONG, bW AS LONG, bH AS LONG)
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IF bW <= 0 OR bH <= 0 THEN EXIT SUB
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DIM AS LONG w, xs, xd: w = bW: xs = srcX: xd = dstX
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DIM AS LONG h, ys, yd: h = bH: ys = srcY: yd = dstY
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IF xs < 0 THEN
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w = w + xs
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xd = xd - xs
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xs = 0
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END IF
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IF ys < 0 THEN
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h = h + ys
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yd = yd - ys
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ys = 0
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END IF
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IF xs + w > src.W THEN w = src.W - xs
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IF ys + h > src.H THEN h = src.H - ys
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IF xd < 0 THEN
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w = w + xd
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xs = xs - xd
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xd = 0
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END IF
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IF yd < 0 THEN
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h = h + yd
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ys = ys - yd
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yd = 0
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END IF
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IF xd + w > dst.W THEN w = dst.W - xd
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IF yd + h > dst.H THEN h = dst.H - yd
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IF w <= 0 OR h <= 0 THEN EXIT SUB
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DIM ps AS LONG: ps = 1 + ys * src.W
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DIM pd AS LONG: pd = 1 + yd * dst.W
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DIM i AS LONG: FOR i = 1 TO h
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MID$(dst.pixels, pd + xd, w) = MID$(src.pixels, ps + xs, w)
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ps = ps + src.W
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pd = pd + dst.W
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NEXT i
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END SUB
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FUNCTION __GIF_ReadLZWCode& (sf AS StringFileType, buffer AS STRING, bitPos AS LONG, bitSize AS LONG)
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DIM code AS LONG, p AS LONG: p = 1
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DIM i AS LONG: FOR i = 1 TO bitSize
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DIM bytePos AS LONG: bytePos = _SHR(bitPos, 3) AND 255
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IF bytePos = 0 THEN
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DIM dataLen AS LONG: dataLen = StringFile_ReadByte(sf)
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IF dataLen = 0 THEN
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__GIF_ReadLZWCode = -1
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EXIT FUNCTION
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END IF
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MID$(buffer, 257 - dataLen) = StringFile_ReadString(sf, dataLen)
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bytePos = 256 - dataLen
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bitPos = _SHL(bytePos, 3)
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END IF
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IF ASC(buffer, 1 + bytePos) AND _SHL(1, (bitPos AND 7)) THEN code = code + p
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p = p + p
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bitPos = bitPos + 1
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NEXT i
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__GIF_ReadLZWCode = code
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END FUNCTION
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FUNCTION __GIF_DecodeLZW& (sf AS StringFileType, bmp AS __GIFBitmapType)
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TYPE __LZWCodeType
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prefix AS LONG
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c AS LONG
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ln AS LONG
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END TYPE
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DIM codes(0 TO 4095) AS __LZWCodeType
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DIM origBitSize AS LONG: origBitSize = StringFile_ReadByte(sf)
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DIM n AS LONG: n = 2 + _SHL(1, origBitSize)
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DIM i AS LONG: WHILE i < n
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codes(i).c = i
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codes(i).ln = 0
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i = i + 1
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WEND
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DIM clearMarker AS LONG: clearMarker = n - 2
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DIM endMarker AS LONG: endMarker = n - 1
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DIM buffer AS STRING: buffer = SPACE$(256)
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DIM bitSize AS LONG: bitSize = origBitSize + 1
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DIM bitPos AS LONG
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DIM prev AS LONG: prev = __GIF_ReadLZWCode(sf, buffer, bitPos, bitSize)
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IF prev = -1 THEN
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__GIF_DecodeLZW = -1
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EXIT FUNCTION
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END IF
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DO
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DIM code AS LONG: code = __GIF_ReadLZWCode(sf, buffer, bitPos, bitSize)
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IF code = -1 THEN
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__GIF_DecodeLZW = -1
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EXIT FUNCTION
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END IF
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IF code = clearMarker THEN
|
||||
bitSize = origBitSize
|
||||
n = _SHL(1, bitSize)
|
||||
n = n + 2
|
||||
bitSize = bitSize + 1
|
||||
prev = code
|
||||
_CONTINUE
|
||||
END IF
|
||||
|
||||
IF code = endMarker THEN EXIT DO
|
||||
|
||||
DIM c AS LONG: IF code < n THEN c = code ELSE c = prev
|
||||
|
||||
DIM outPos AS LONG: outPos = outPos + codes(c).ln
|
||||
i = 0
|
||||
|
||||
DO
|
||||
ASC(bmp.pixels, 1 + outPos - i) = codes(c).c
|
||||
|
||||
IF codes(c).ln THEN
|
||||
c = codes(c).prefix
|
||||
ELSE
|
||||
EXIT DO
|
||||
END IF
|
||||
|
||||
i = i + 1
|
||||
LOOP
|
||||
|
||||
outPos = outPos + 1
|
||||
|
||||
IF code >= n THEN
|
||||
ASC(bmp.pixels, 1 + outPos) = codes(c).c
|
||||
outPos = outPos + 1
|
||||
END IF
|
||||
|
||||
IF prev <> clearMarker THEN
|
||||
codes(n).prefix = prev
|
||||
codes(n).ln = codes(prev).ln + 1
|
||||
codes(n).c = codes(c).c
|
||||
n = n + 1
|
||||
END IF
|
||||
|
||||
IF _SHL(1, bitSize) = n THEN
|
||||
IF bitSize < 12 THEN bitSize = bitSize + 1
|
||||
END IF
|
||||
|
||||
prev = code
|
||||
LOOP
|
||||
END FUNCTION
|
||||
|
||||
|
||||
' This load the GIF overload image
|
||||
FUNCTION __GIF_LoadOverlayImage&
|
||||
CONST SIZE_GIFOVERLAYIMAGE_BMP_16506 = 16506
|
||||
CONST COMP_GIFOVERLAYIMAGE_BMP_16506 = -1
|
||||
CONST DATA_GIFOVERLAYIMAGE_BMP_16506 = _
|
||||
"eNpy8q1yYACDKiDOAWIHKGZkUGBgZsAF/kMQjDM4gRSgfbsGjt+I4jgexj+2YU57nd27H0Nl6htD6wkzJ31hqFyFWkMVZmZm5rzjMyjfzcwLvEKj" + _
|
||||
"tXTnFbyZjxn0O60WBBjDdVjDU/gAP0LwK77CW3gKa7gOY+B3c1k13Ic3ICm9gftQQ8h1BIt4GdInL2MRRxBKHcd1+BIyIF/iehzHYdWpmMXnkEPy" + _
|
||||
"OWZxKgZZV2AbEohtXI5B1Di+hQTmW4z3ub3fBQncXX04Hs7CKiQnVnFWhtkfh+TM4zgrgza/AsmplZTHwh2QnLszRT8vheA/LlyObyAF8Q0u9zjm" + _
|
||||
"tyEFs52wL5iFFNRsgrXMZ5CC+gwnY/JfBym462LW719BCu4rHIGtRUhJLNo+H29ASuINMxYMQ1JooIUOekYHLTQgFpromJ8V1NFGV7+HOiQjw9C6" + _
|
||||
"L0VumzlOB02TvWehhTZ6VoavwX3QehXixWz7ysrK7rPPPrsXmXJfc98zGdqoa8bNzc2/f++tt97a19dJ9/tPP/20H1EPPfSQ/o0mJAOvwdVFabK7" + _
|
||||
"bFHCeuSRR/ZMWxh4fuMiTBygzff+u9267XY/X3vttT33Nc3gyn08NTW1474fQP4J3ATx0LH7/eabbzbt24D7mUajEWmWQPLfhHXffT8yMrJjs6Nr" + _
|
||||
"+3k00LZZAsq/jqcgCbX+u+8/++yzfc2OOgR1bSNWgPmfwoe+bd/ljig93tGCOLrd/ctvwM4dPLyL7yAJ9Rxt+/Pz8ztmnzTRc1+PYirT/Ibna/AF" + _
|
||||
"5KD56Qc0f72v+ROU+V1J6JeM89v2Hy+A/Inav8mm45ht/7b/i9FBPZD2n0X/107ye0YnhP4vzfjnti3BuqShc0FdC7iPQxn/fOc/msX2ZTr/Qd2u" + _
|
||||
"be2cIaD5/3oW81/tByzl5vsRZecM2R//3ucJbsLYQdc/bnv/u8616wCX2635Isrse6eRYX6r67H+uRDiqYWeo/mSjE8cN6aPzm78i5mTxbkIrl5J" + _
|
||||
"8xroOlfHBbvmN+2iAwkg/6vQuhfixfRvCWj/KN7nv/x1Pc9/DfX5/GcD9ZTnP5Fp/zdkzn+/Xsrz39X1D63z8SWk4L7Eker6Z2mvfx9HXM2U+P4H" + _
|
||||
"HQu2IAVDJrIlq8uKd/8TmfxqrMT3v2ndBsm526v7X6v7n6v736vnH6rnX6rnnzI+HmYCeP5tBqeW8PnH63A8wOdfX4L0yUvm+ddQq4a78QokpVdw" + _
|
||||
"N2rIY+nz70tYxZN431x3/g7v40msYmlQz7//BcxY2A4="
|
||||
|
||||
STATIC overlayImage AS LONG
|
||||
|
||||
' Only do this once
|
||||
IF overlayImage = 0 THEN
|
||||
overlayImage = _LOADIMAGE(Base64_LoadResourceString(DATA_GIFOVERLAYIMAGE_BMP_16506, SIZE_GIFOVERLAYIMAGE_BMP_16506, COMP_GIFOVERLAYIMAGE_BMP_16506), 32, "memory")
|
||||
END IF
|
||||
|
||||
__GIF_LoadOverlayImage = overlayImage
|
||||
END FUNCTION
|
||||
|
||||
'$INCLUDE:'HashTable.bas'
|
||||
|
|
|
|||
|
|
@ -6,41 +6,55 @@
|
|||
$IF GIFPLAY_BI = UNDEFINED THEN
|
||||
$LET GIFPLAY_BI = TRUE
|
||||
|
||||
$IF INFORM_BI = UNDEFINED THEN
|
||||
DEFLNG A-Z
|
||||
OPTION _EXPLICIT
|
||||
' TODO: remove this once done
|
||||
'$IF INFORM_BI = UNDEFINED THEN
|
||||
' DEFLNG A-Z
|
||||
' OPTION _EXPLICIT
|
||||
|
||||
CONST FALSE = 0, TRUE = NOT FALSE
|
||||
$END IF
|
||||
' CONST FALSE = 0, TRUE = NOT FALSE
|
||||
'$END IF
|
||||
|
||||
'$INCLUDE:'HashTable.bi'
|
||||
'$INCLUDE:'StringFile.bi'
|
||||
|
||||
' This is the master GIF type that holds info about a single GIF file
|
||||
TYPE __GIFPlayType
|
||||
id AS LONG ' handle supplied by the user (do we need this?)
|
||||
W AS _UNSIGNED INTEGER ' GIF global width (this needs to be 16-bit)
|
||||
H AS _UNSIGNED INTEGER ' GIF global height (this needs to be 16-bit)
|
||||
bgColor AS _UNSIGNED _BYTE ' background color
|
||||
colors AS _UNSIGNED INTEGER ' total colors in the global palette
|
||||
pal AS STRING * 768 ' global palette - 256 colors * 3 components
|
||||
frame AS LONG ' index of the first frame in the frame data array
|
||||
frames AS LONG ' total frames in the animation
|
||||
hideOverlay AS _BYTE ' should the "GIF" overlay be hidden when it is not playing
|
||||
firstFrame AS LONG ' index of the first frame in the frame data array
|
||||
currentFrame AS LONG ' index of the current frame being played
|
||||
totalFrames AS LONG ' total number of frames counted while loading
|
||||
currentFrameNumber AS LONG ' this is simply the number of current frame since playback (re)started
|
||||
isPlaying AS _BYTE ' set to true if the GIF is currently playing
|
||||
direction AS _BYTE ' playback direction (-1 or +1)
|
||||
overlayEnabled AS _BYTE ' should the "GIF" overlay be shown / hidden when it is not playing
|
||||
END TYPE
|
||||
|
||||
' This is the a GIF frame type that holds info about an individual GIF frame
|
||||
TYPE __GIFPlayFrameType
|
||||
id AS LONG ' which GIF handle does this belong to?
|
||||
id AS LONG ' index to __GIFPlay that this frame belongs to (do we really need this?)
|
||||
image AS LONG ' QB64 image handle
|
||||
L AS _UNSIGNED INTEGER ' frame left (this needs to be 16-bit) (do we need these?)
|
||||
T AS _UNSIGNED INTEGER ' frame top (this needs to be 16-bit)
|
||||
W AS _UNSIGNED INTEGER ' frame width (this needs to be 16-bit)
|
||||
H AS _UNSIGNED INTEGER ' frame height (this needs to be 16-bit)
|
||||
pre AS LONG ' previous frame (this will link back to the last frame if this is the first one)
|
||||
nxt AS LONG ' next frame (this will link back to the first frame if this is the last one)
|
||||
delayMs AS SINGLE ' frame delay time
|
||||
direction AS _BYTE ' playback direction
|
||||
prevFrame AS LONG ' previous frame (this will link back to the last frame if this is the first one)
|
||||
nextFrame AS LONG ' next frame (this will link back to the first frame if this is the last one)
|
||||
timeMs AS SINGLE ' frame time
|
||||
END TYPE
|
||||
|
||||
REDIM __GIFPlayHashTable(0 TO 0) AS HashTableType
|
||||
REDIM __GIFPlay(0 TO 0) AS __GIFPlayType
|
||||
REDIM __GIFPlayFrame(0 TO 0) AS __GIFPlayFrameType
|
||||
' This is used by temporary variables during the decoding step to store the raw data for a single frame
|
||||
TYPE __GIFBitmapType
|
||||
W AS LONG
|
||||
H AS LONG
|
||||
pixels AS STRING
|
||||
END TYPE
|
||||
|
||||
REDIM __GIFPlayHashTable(0 TO 0) AS HashTableType ' shared hash table to keep user supplied IDs (the values here points to indexes in __GIFPlay)
|
||||
REDIM __GIFPlay(0 TO 0) AS __GIFPlayType ' main GIFPlay array - each array element is for a single GIF
|
||||
REDIM __GIFPlayFrame(0 TO 0) AS __GIFPlayFrameType ' shared GIF frame array - this holds GIF frame and frame information for all loaded GIFs
|
||||
|
||||
$END IF
|
||||
|
|
|
|||
|
|
@ -90,25 +90,33 @@ $IF HASHTABLE_BAS = UNDEFINED THEN
|
|||
'PRINT "Value for key 7:"; HashTable_LookupLong(MyHashTable(), 7)
|
||||
'PRINT "Value for key 21:"; HashTable_LookupLong(MyHashTable(), 21)
|
||||
|
||||
'PRINT HashTable_IsKeyPresent(MyHashTable(), 100)
|
||||
|
||||
'END
|
||||
'-------------------------------------------------------------------------------------------------------------------
|
||||
|
||||
' Simple hash function: k is the 32-bit key and l is the upper bound of the array
|
||||
FUNCTION __HashTable_GetHash~& (k AS _UNSIGNED LONG, l AS _UNSIGNED LONG)
|
||||
__HashTable_GetHash = k MOD (l + 1) ' + 1 is needed for 0 based arrays
|
||||
$CHECKING:OFF
|
||||
' Actually this should be k MOD (l + 1)
|
||||
' However, we can get away using AND because our arrays size always doubles in multiples of 2
|
||||
' So, if l = 255, then (k MOD (l + 1)) = (k AND l)
|
||||
' Another nice thing here is that we do not need to do the addition :)
|
||||
__HashTable_GetHash = k AND l
|
||||
$CHECKING:ON
|
||||
END FUNCTION
|
||||
|
||||
|
||||
' Subroutine to resize and rehash the elements in a hash table
|
||||
SUB __HashTable_ResizeAndRehash (hashTable() AS HashTableType)
|
||||
DIM UB AS _UNSIGNED LONG: UB = UBOUND(hashTable)
|
||||
DIM uB AS _UNSIGNED LONG: uB = UBOUND(hashTable)
|
||||
|
||||
' Resize the array to double its size while preserving contents
|
||||
DIM newUB AS _UNSIGNED LONG: newUB = _SHL(UB + 1, 1) - 1
|
||||
DIM newUB AS _UNSIGNED LONG: newUB = _SHL(uB + 1, 1) - 1
|
||||
REDIM _PRESERVE hashTable(0 TO newUB) AS HashTableType
|
||||
|
||||
' Rehash and swap all the elements
|
||||
DIM i AS _UNSIGNED LONG: FOR i = 0 TO UB
|
||||
DIM i AS _UNSIGNED LONG: FOR i = 0 TO uB
|
||||
IF hashTable(i).U THEN SWAP hashTable(i), hashTable(__HashTable_GetHash(hashTable(i).K, newUB))
|
||||
NEXT i
|
||||
END SUB
|
||||
|
|
@ -117,8 +125,8 @@ $IF HASHTABLE_BAS = UNDEFINED THEN
|
|||
' This returns an array index in hashTable where k can be inserted
|
||||
' If there is a collision it will grow the array, re-hash and copy all elements
|
||||
FUNCTION __HashTable_GetInsertIndex& (hashTable() AS HashTableType, k AS _UNSIGNED LONG)
|
||||
DIM ub AS _UNSIGNED LONG: ub = UBOUND(hashTable)
|
||||
DIM idx AS _UNSIGNED LONG: idx = __HashTable_GetHash(k, ub)
|
||||
DIM uB AS _UNSIGNED LONG: uB = UBOUND(hashTable)
|
||||
DIM idx AS _UNSIGNED LONG: idx = __HashTable_GetHash(k, uB)
|
||||
|
||||
IF hashTable(idx).U THEN
|
||||
' Used slot
|
||||
|
|
@ -139,8 +147,8 @@ $IF HASHTABLE_BAS = UNDEFINED THEN
|
|||
|
||||
' This function returns the index from hashTable for the key k if k is in use
|
||||
FUNCTION __HashTable_GetLookupIndex& (hashTable() AS HashTableType, k AS _UNSIGNED LONG)
|
||||
DIM ub AS _UNSIGNED LONG: ub = UBOUND(hashTable)
|
||||
DIM idx AS _UNSIGNED LONG: idx = __HashTable_GetHash(k, ub)
|
||||
DIM uB AS _UNSIGNED LONG: uB = UBOUND(hashTable)
|
||||
DIM idx AS _UNSIGNED LONG: idx = __HashTable_GetHash(k, uB)
|
||||
|
||||
IF hashTable(idx).U THEN
|
||||
' Used slot
|
||||
|
|
@ -158,6 +166,12 @@ $IF HASHTABLE_BAS = UNDEFINED THEN
|
|||
END FUNCTION
|
||||
|
||||
|
||||
' Return TRUE if k is available in the hash table
|
||||
FUNCTION HashTable_IsKeyPresent%% (hashTable() AS HashTableType, k AS _UNSIGNED LONG)
|
||||
HashTable_IsKeyPresent = (__HashTable_GetLookupIndex(hashTable(), k) >= 0)
|
||||
END FUNCTION
|
||||
|
||||
|
||||
' Remove an element from the hash table
|
||||
SUB HashTable_Remove (hashTable() AS HashTableType, k AS _UNSIGNED LONG)
|
||||
DIM idx AS LONG: idx = __HashTable_GetLookupIndex(hashTable(), k)
|
||||
|
|
|
|||
|
|
@ -6,23 +6,16 @@
|
|||
$IF HASHTABLE_BI = UNDEFINED THEN
|
||||
$LET HASHTABLE_BI = TRUE
|
||||
|
||||
$IF INFORM_BI = UNDEFINED THEN
|
||||
DEFLNG A-Z
|
||||
OPTION _EXPLICIT
|
||||
|
||||
CONST FALSE = 0, TRUE = NOT FALSE
|
||||
$END IF
|
||||
|
||||
CONST __HASHTABLE_KEY_EXISTS = -1
|
||||
CONST __HASHTABLE_KEY_UNAVAILABLE = -2
|
||||
|
||||
' Hash table entry type
|
||||
' To extended supported data types, add other value types after V and then write
|
||||
' wrappers around __HashTable_GetInsertIndex() & __HashTable_GetLookupIndex()
|
||||
TYPE HashTableType
|
||||
U AS _BYTE ' used?
|
||||
K AS _UNSIGNED LONG ' key
|
||||
V AS LONG ' value
|
||||
' <- add other value types here and then write wrappers
|
||||
' around __HashTable_GetInsertIndex() & __HashTable_GetLookupIndex()
|
||||
END TYPE
|
||||
|
||||
$END IF
|
||||
|
|
|
|||
|
|
@ -7,13 +7,6 @@
|
|||
$IF INI_BI = UNDEFINED THEN
|
||||
$LET INI_BI = TRUE
|
||||
|
||||
$IF INFORM_BI = UNDEFINED THEN
|
||||
DEFLNG A-Z
|
||||
OPTION _EXPLICIT
|
||||
|
||||
CONST FALSE = 0, TRUE = NOT FALSE
|
||||
$END IF
|
||||
|
||||
' TODO:
|
||||
' We should put all of this stuff into a single state type and then have just a single global to avoid possible name collisions.
|
||||
' INI routines without namespace like prefix should also be prefixed with the "Ini_" prefix
|
||||
|
|
|
|||
|
|
@ -6,13 +6,6 @@
|
|||
$IF MESSAGEBOX_BI = UNDEFINED THEN
|
||||
$LET MESSAGEBOX_BI = TRUE
|
||||
|
||||
$IF INFORM_BI = UNDEFINED THEN
|
||||
DEFLNG A-Z
|
||||
OPTION _EXPLICIT
|
||||
|
||||
CONST FALSE = 0, TRUE = NOT FALSE
|
||||
$END IF
|
||||
|
||||
'Messagebox constants
|
||||
CONST MsgBox_OkOnly = 1
|
||||
CONST MsgBox_OkCancel = 2
|
||||
|
|
|
|||
|
|
@ -6,13 +6,6 @@
|
|||
$IF STRINGFILE_BI = UNDEFINED THEN
|
||||
$LET STRINGFILE_BI = TRUE
|
||||
|
||||
$IF INFORM_BI = UNDEFINED THEN
|
||||
DEFLNG A-Z
|
||||
OPTION _EXPLICIT
|
||||
|
||||
CONST FALSE = 0, TRUE = NOT FALSE
|
||||
$END IF
|
||||
|
||||
' Simplified QB64-only memory-file
|
||||
TYPE StringFileType
|
||||
buffer AS STRING
|
||||
|
|
|
|||
|
|
@ -14,8 +14,8 @@ DIM SHARED LoadBT AS LONG
|
|||
DIM SHARED PlayBT AS LONG
|
||||
|
||||
': External modules: ---------------------------------------------------------------
|
||||
'$INCLUDE:'../../InForm/InForm.bi'
|
||||
'$INCLUDE:'../../InForm/extensions/GIFPlay.bi'
|
||||
'$INCLUDE:'../../InForm/InForm.bi'
|
||||
'$INCLUDE:'../../InForm/extensions/MessageBox.bi'
|
||||
'$INCLUDE:'GIFPlaySample.frm'
|
||||
|
||||
|
|
@ -28,7 +28,7 @@ SUB __UI_OnLoad
|
|||
END SUB
|
||||
|
||||
SUB __UI_BeforeUpdateDisplay
|
||||
GIF_Update PictureBox1
|
||||
GIF_Draw PictureBox1, True
|
||||
END SUB
|
||||
|
||||
SUB __UI_BeforeUnload
|
||||
|
|
@ -42,7 +42,7 @@ SUB __UI_Click (id AS LONG)
|
|||
DIM fileName AS STRING: fileName = _OPENFILEDIALOG$(Caption(gifplaySample), , "*.gif|*.GIF|*.Gif", "GIF Files")
|
||||
|
||||
IF LEN(fileName) > 0 THEN
|
||||
IF GIF_Open(PictureBox1, fileName) THEN
|
||||
IF GIF_LoadFromFile(PictureBox1, fileName) THEN
|
||||
|
||||
Control(PlayBT).Disabled = False
|
||||
|
||||
|
|
@ -67,7 +67,7 @@ SUB __UI_Click (id AS LONG)
|
|||
END IF
|
||||
|
||||
CASE PictureBox1
|
||||
GIF_HideOverlay PictureBox1
|
||||
GIF_EnableOverlay PictureBox1, False
|
||||
END SELECT
|
||||
END SUB
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue