decoder.h File Reference

The functions in this file are OPTIONALLY provided by Receiver Platform *. More...

#include "techtype.h"

Go to the source code of this file.

Classes
struct	s_image

Macros
#define	HAS_TRANSPARENCY   0x00
#define	COMPLETELY_OPAQUE   0x01
#define	PIX_BYTES_PLT   1
#define	PIX_BYTES_RGB   3
#define	PIX_BYTES_ARGB   4
#define	SD_METRIC_RESOLUTION   2835
#define	HD_720_METRIC_RESOLUTION   3543
#define	HD_1080_METRIC_RESOLUTION   5315

Typedefs
typedef struct s_image	S_IMAGE

Functions
S_IMAGE *	DEC_DecodePng (U8BIT *data, U32BIT size)
	Allocate memory for PNG and decode bitmap To free "S_IMAGE" memory, DEC_FreePng will be called. More...
void	DEC_FreePng (S_IMAGE *image)
	Free memory allocated for PNG bitmap. More...
S_IMAGE *	DEC_DecodeJpg (U8BIT *data, U32BIT size)
	Allocate memory for JPEG and decode bitmap To free "S_IMAGE" memory, DEC_FreeJpg will be called. More...
void	DEC_FreeJpg (S_IMAGE *image)
	Free memory allocated for JPEG bitmap. More...
void *	DEC_OSDCreateBmpSurf (U32BIT s_width, U32BIT s_height, U32BIT i_width, U32BIT i_height, S_IMAGE *image, U32BIT *pitch)
	This creates a hardware surface of size using STB_OSDMhegCreateSurface() with s_width and s_height, and fills the surface with the IMAGE data. The bitmap must be stretched or shrunk onto surface with image size (i_width,i_height) When surface size is greater than image size, then the bitmap is 'tiled' to fill the surface. Otherwise sizes will be equal. Implementations may choose to ignore requested surface size and leave MHEG5 to do the tiling (where graphic memory is limited). If so, 'tiled' should be set to FALSE, and use (i_width,i_height) for surface size. Colour format of resulting surface is as used in the call to MHEG5_Open() with 'ColourDepth' in setup config. More...

Detailed Description

The functions in this file are OPTIONALLY provided by Receiver Platform *.

Date

30/04/2008

Author

Adam Sturtridge

Definition in file decoder.h.

Macro Definition Documentation

#define COMPLETELY_OPAQUE   0x01

Definition at line 31 of file decoder.h.

#define HAS_TRANSPARENCY   0x00

Definition at line 30 of file decoder.h.

#define HD_1080_METRIC_RESOLUTION   5315

Definition at line 39 of file decoder.h.

#define HD_720_METRIC_RESOLUTION   3543

Definition at line 38 of file decoder.h.

#define PIX_BYTES_ARGB   4

Definition at line 35 of file decoder.h.

#define PIX_BYTES_PLT   1

Definition at line 33 of file decoder.h.

#define PIX_BYTES_RGB   3

Definition at line 34 of file decoder.h.

#define SD_METRIC_RESOLUTION   2835

Definition at line 37 of file decoder.h.

Typedef Documentation

typedef struct s_image S_IMAGE

Function Documentation

S_IMAGE* DEC_DecodeJpg	(	U8BIT *	data,
		U32BIT	len
	)

Allocate memory for JPEG and decode bitmap To free "S_IMAGE" memory, DEC_FreeJpg will be called.

Parameters

data	JPEG data object
size	Size of JPEG data in bytes.

Returns

S_IMAGE* The decoded bitmap

Allocate memory for JPEG and decode bitmap To free "S_IMAGE" memory, DEC_FreeJpg will be called.

Parameters

void	* data JPG data. int len Length of data for JPG.

Returns

void * The decoded bitmap.

Warning

Bug:

Definition at line 324 of file mg_jpg.c.

S_IMAGE* DEC_DecodePng	(	U8BIT *	data,
		U32BIT	len
	)

Allocate memory for PNG and decode bitmap To free "S_IMAGE" memory, DEC_FreePng will be called.

Parameters

data	PNG data object
size	Size of PNG data in bytes.

Returns

S_IMAGE* The decoded bitmap

Allocate memory for PNG and decode bitmap To free "S_IMAGE" memory, DEC_FreePng will be called.

Parameters

void	* data PNG data. int len Length of data for PNG.

Returns

S_IMAGE * The decoded bitmap.

Warning

Bug:

Definition at line 332 of file mg_png.c.

void DEC_FreeJpg

(

S_IMAGE *

image

)

Free memory allocated for JPEG bitmap.

Parameters

data

JPG image

Returns

void

Definition at line 495 of file mg_jpg.c.

void DEC_FreePng

(

S_IMAGE *

image

)

Free memory allocated for PNG bitmap.

Parameters

data

PNG image

Returns

void

Definition at line 637 of file mg_png.c.

void* DEC_OSDCreateBmpSurf	(	U32BIT	s_width,
		U32BIT	s_height,
		U32BIT	i_width,
		U32BIT	i_height,
		S_IMAGE *	image,
		U32BIT *	pStride
	)

This creates a hardware surface of size using STB_OSDMhegCreateSurface() with s_width and s_height, and fills the surface with the IMAGE data. The bitmap must be stretched or shrunk onto surface with image size (i_width,i_height) When surface size is greater than image size, then the bitmap is 'tiled' to fill the surface. Otherwise sizes will be equal. Implementations may choose to ignore requested surface size and leave MHEG5 to do the tiling (where graphic memory is limited). If so, 'tiled' should be set to FALSE, and use (i_width,i_height) for surface size. Colour format of resulting surface is as used in the call to MHEG5_Open() with 'ColourDepth' in setup config.

Parameters

s_width	Width of requested surface in pixels
s_height	Height of requested surface in pixels
i_width	Width of image on surface in pixels
i_height	Height of image on surface in pixels
image	image structure returned by DEC_DecodePNG() or DEC_DecodeJPG()
pitch	width of returned buffer in bytes.

Returns

void* Success - Handle to surface. Failure - NULL (or zero)

Definition at line 1397 of file mg_bitmap.c.