Kernel

Exports for Kernel. More...

Functions
int	ksceJpegEncoderInit (SceJpegEncoderContext context, int inWidth, int inHeight, SceJpegEncoderPixelFormat pixelformat, void *outBuffer, SceSize outSize)
	Initialize a jpeg encoder.
int	ksceJpegEncoderEnd (SceJpegEncoderContext context)
	Terminate a jpeg encoder.
int	ksceJpegEncoderEncode (SceJpegEncoderContext context, const void *inBuffer)
	Execute a jpeg encode.
int	ksceJpegEncoderSetCompressionRatio (SceJpegEncoderContext context, int ratio)
	Set encoder compression ratio.
int	ksceJpegEncoderSetOutputAddr (SceJpegEncoderContext context, void *outBuffer, SceSize outSize)
	Set encoder output address.
int	ksceJpegEncoderCsc (SceJpegEncoderContext context, void *outBuffer, const void *inBuffer, int inPitch, SceJpegEncoderPixelFormat inPixelFormat)
	Execute a color conversion from ARGB to YCbCr.
int	ksceJpegEncoderGetContextSize (void)
	Return required free size to allocate a jpeg encoder.
int	ksceJpegEncoderSetValidRegion (SceJpegEncoderContext context, int inWidth, int inHeight)
	Set encoder valid region (?)
int	ksceJpegEncoderSetHeaderMode (SceJpegEncoderContext context, int mode)
	Set header used for output file.

Detailed Description

Exports for Kernel.

---

Using this library in your project

Include the header file in your project:

#include <psp2kern/avcodec/jpegenc.h> 

Link the library to the executable:

SceAvcodecForDriver_stub 

---

Function Documentation

ksceJpegEncoderInit()

int ksceJpegEncoderInit	(	SceJpegEncoderContext	context,
		int	inWidth,
		int	inHeight,
		SceJpegEncoderPixelFormat	pixelformat,
		void *	outBuffer,
		SceSize	outSize
	)

Initialize a jpeg encoder.

Parameters

[in]	context	- A pointer to a big enough allocated memory block
[in]	inWidth	- Input width in pixels
[in]	inHeight	- Input height in pixels
[in]	pixelformat	- A valid SceJpegEncoderPixelFormat set of values
[in]	outBuffer	- A physically continuous memory block 256 bytes aligned
[in]	outSize	- Output size in bytes

Returns

0 on success, < 0 on error.

ksceJpegEncoderEnd()

int ksceJpegEncoderEnd

(

SceJpegEncoderContext

context

)

Terminate a jpeg encoder.

Parameters

[in]

context

- A pointer to an already initialized SceJpegEncoderContext

Returns

0 on success, < 0 on error.

ksceJpegEncoderEncode()

int ksceJpegEncoderEncode	(	SceJpegEncoderContext	context,
		const void *	inBuffer
	)

Execute a jpeg encode.

Parameters

[in]	context	- A pointer to an already initialized SceJpegEncoderContext
[in]	inBuffer	- A physically continuous memory block 256 bytes aligned

Returns

0 on success, < 0 on error.

ksceJpegEncoderSetCompressionRatio()

int ksceJpegEncoderSetCompressionRatio	(	SceJpegEncoderContext	context,
		int	ratio
	)

Set encoder compression ratio.

Parameters

[in]	context	- A pointer to an already initialized SceJpegEncoderContext
[in]	ratio	- A value between 0 and 255 (higher = better compression, lower = better speed)

Returns

0 on success, < 0 on error.

ksceJpegEncoderSetOutputAddr()

int ksceJpegEncoderSetOutputAddr	(	SceJpegEncoderContext	context,
		void *	outBuffer,
		SceSize	outSize
	)

Set encoder output address.

Parameters

[in]	context	- A pointer to an already initialized SceJpegEncoderContext
[in]	outBuffer	- A physically continuous memory block 256 bytes aligned
[in]	outSize	- Output buffer size in bytes

Returns

0 on success, < 0 on error.

ksceJpegEncoderCsc()

int ksceJpegEncoderCsc	(	SceJpegEncoderContext	context,
		void *	outBuffer,
		const void *	inBuffer,
		int	inPitch,
		SceJpegEncoderPixelFormat	inPixelFormat
	)

Execute a color conversion from ARGB to YCbCr.

Parameters

[in]	context	- A pointer to an already initialized SceJpegEncoderContext
[in]	outBuffer	- A physical continuous memory block 256 bytes aligned
[in]	inBuffer	- A pointer to a valid ARGB buffer
[in]	inPitch	- Input pitch value in pixels
[in]	inPixelFormat	- A valid SceJpegEncoderPixelFormat set of values

Returns

0 on success, < 0 on error.

ksceJpegEncoderGetContextSize()

int ksceJpegEncoderGetContextSize

(

void

)

Return required free size to allocate a jpeg encoder.

Returns

Required free memory size in bytes, < 0 on error.

ksceJpegEncoderSetValidRegion()

int ksceJpegEncoderSetValidRegion	(	SceJpegEncoderContext	context,
		int	inWidth,
		int	inHeight
	)

Set encoder valid region (?)

Parameters

[in]	context	- A pointer to an already initialized SceJpegEncoderContext
[in]	inWidth	- Input width in pixels
[in]	inHeight	- Input height in pixels

Returns

0 on success, < 0 on error.

ksceJpegEncoderSetHeaderMode()

int ksceJpegEncoderSetHeaderMode	(	SceJpegEncoderContext	context,
		int	mode
	)

Set header used for output file.

Parameters

[in]	context	- A pointer to an already initialized SceJpegEncoderContext
[in]	mode	- One of SceJpegEncoderHeaderMode

Returns

0 on success, < 0 on error.