Module_PNG

Module: PNG

Status summary

Component	Section	32-bit	64-bit	Claimant	Source	Repo summary
PNG	ROM modules	-		Gerph		not built in repo, not tested in repo

Development status

Completeness

Functionality	SWIs	Services	Uses Services	TOTAL
50.00%	50.00%	50.00%	50.00%	50.00%

Summary

PNG is the RISC OS PNG codec module, exposing SWIs to inspect PNG signatures/chunks/metadata, configure decoding and process image data. It requires ZLib for deflate compression and integrates with Wimp task lifecycle for task-associated processing.

Relationships

Discovered features

• Has file access
• Has services
• Has services fast
• Has swis
• Is c
• Uses dynamic area
• Uses heap dynamic area

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Provides

Functionality

In 32bit	In 64 bit	Interface
✅	🔲	License info

Commands

None

SWIs

In 32bit	In 64 bit	Interface
✅	🔲	PNG_Version (&53BC0)
✅	🔲	PNG_Signature (&53BC1)
✅	🔲	PNG_Structure (&53BC2)
✅	🔲	PNG_Chunk (&53BC3)
✅	🔲	PNG_Info (&53BC4)
✅	🔲	PNG_Time (&53BC5)
✅	🔲	PNG_Set (&53BC6)
✅	🔲	PNG_Compression (&53BC7)
✅	🔲	PNG_GetChunkInfo (&53BC8)
✅	🔲	PNG_SetChunkInfo (&53BC9)
✅	🔲	PNG_Functions (&53BCA)
✅	🔲	PNG_Greyscale (&53BCB)
✅	🔲	PNG_Process (&53BCC)
✅	🔲	PNG_Memory (&53BCD)
✅	🔲	PNG_GetInfo (&53BCE)

Services

In 32bit	In 64 bit	Interface
✅	🔲	Service_TaskManagerAcknowledgements
✅	🔲	Service_WimpCloseDown

Vectors

None

Events

None

UpCalls

None

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Issues calls to

Services

In 32bit	In 64 bit	Interface
✅	🔲	Service_TaskManagerAcknowledgements

Vectors

None

Events

None

UpCalls

None

Modules

• MessageTrans
• SharedCLibrary
• ZLib