Video Transformation Calculator. More...

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <assert.h>
#include "techtype.h"
#include "dbgfuncs.h"
#include "osdtype.h"
#include "vtc.h"

Go to the source code of this file.

Classes
struct	S_AFD_TRANS

struct	s_fraction

struct	s_matrix

struct	s_fract_rect

struct	s_conversion_state

Macros
#define	DBG(x)

Typedefs
typedef struct s_fraction	S_VT_FRACTION

typedef struct s_matrix	S_VT_MATRIX

typedef struct s_fract_rect	S_VT_FRACT_RECT

typedef struct s_conversion_state	S_VT_CONVERSION_STATE

Enumerations
enum	E_AFD_PREFERENCE { AFD_PREFERENCE_AUTO, AFD_PREFERENCE_16_9_LB, AFD_PREFERENCE_14_9_LB, AFD_PREFERENCE_CCO }

enum	E_MHEG_SCALING { MHEG_SCALING_NONE, MHEG_SCALING_QUARTER, MHEG_SCALING_OFFSET, MHEG_SCALING_OTHER }

Functions
void *	VT_Open (S_VT_OPTIONS *options)
	Open video transformation manager. More...

void	VT_Close (void *context)
	Close video transformation manager. More...

void	VT_Enable (void *context, BOOLEAN enable)
	Enable or disable transformation calculations. More...

void	VT_SetAfd (void *context, U8BIT afd_value)
	Set current AFD (active format descriptor value) More...

void	VT_SetVideoAspectRatio (void *context, E_ASPECT_RATIO aspect_ratio)
	Set video aspect ratio. More...

E_ASPECT_RATIO	VT_GetVideoAspectRatio (void *context)
	Get video aspect ratio. More...

void	VT_SetMhegAspectRatio (void *context, E_ASPECT_RATIO aspect_ratio)
	Set MHEG-5 aspect ratio. More...

E_ASPECT_RATIO	VT_GetDisplayAspectRatio (void *context)
	Get display aspect ratio. More...

void	VT_SetDisplayAspectRatio (void *context, E_ASPECT_RATIO aspect_ratio)
	Set display aspect ratio. More...

void	VT_SetVideoAlignmentPref (void *context, E_VIDEO_ASPECT_MODE alignment)
	Set user preference for video aspect ratio alignment. More...

void	VT_SetCustomModeCallback (void *context, F_VT_CUSTOM_MODE_CALLBACK callback)
	Set customer mode callback. More...

void	VT_SetMhegScalingResolution (void *context, U16BIT width, U16BIT height)
	Set MHEG5 scaling resolution. More...

void	VT_SetMhegScaling (void context, S_RECTANGLE scaling)
	Set MHEG-5 scaling information. More...

void	VT_SetAppScaling (void context, S_RECTANGLE window)
	Set application scaling information. More...

void	VT_SetVideoResolution (void *context, U16BIT width, U16BIT height)
	Set video resolution. More...

void	VT_SetScreenResolution (void *context, U16BIT width, U16BIT height)
	Set screen resolution. More...

void	VT_SetMhegVideoAlignment (void *context, E_VIDEO_ASPECT_MODE mode)
	Set widescreeen alignment mode for MHEG-5. More...

void	VT_SetProfileMheg5 (void *context, BOOLEAN enable)
	Set profile to apply MHEG5 option. More...

void	VT_SetProfileHbbtv (void *context, BOOLEAN enable)
	Set profile to apply HBBTV option. More...

void	VT_SetHbbtvWindow (void context, S_RECTANGLE output)
	Set HBBTV output window. More...

void	VT_GetVideoTransformation (void context, S_RECTANGLE input_rect, S_RECTANGLE *output_rect)
	Get the current video transfromation rectangles. More...

void	VT_GetWss (void context, U8BIT wss)
	Return WSS (wide-screen signalling) value. More...

void	VT_SetVideoChangedCallback (void context, F_VT_NOTIFICATION_CALLBACK callback, void user_data)
	Set video change callback. More...

void	VT_SetUserPreferenceChangedCallback (void context, F_VT_NOTIFICATION_CALLBACK callback, void user_data)
	Set user preference change callback. More...

E_FORMAT_CONVERSION	VT_GetDecoderFormatConversion (void *context)
	Return the current decoder format conversion. More...

void	VT_GetScreenResolution (void context, U16BIT width, U16BIT *height)
	Return the current screen resolution. More...

void	VT_GetVideoResolution (void context, U16BIT width, U16BIT *height)
	Return the current video resolution. More...

BOOLEAN	VT_IsOsdScaled (void *context)
	Check if osd must be scaled due to MHEG scene aspect ratio. More...

void	VT_SetDecoderStatus (void *context, E_STB_AV_DECODER_STATUS status)
	Set the decoder status. More...

E_STB_AV_DECODER_STATUS	VT_GetDecoderStatus (void *context)
	Get the decoder status. More...

Detailed Description

Video Transformation Calculator.

Date: 15/03/12

Author: Peter Stanton

Definition in file vtc.c.

Function Documentation

◆ VT_Close()

void VT_Close ( void * context )

Close video transformation manager.

Parameters

context - transformation calculator context

Definition at line 412 of file vtc.c.

◆ VT_Enable()

void VT_Enable	(	void *	context,
		BOOLEAN	enable
	)

Enable or disable transformation calculations.

Parameters

context	- transformation calculator context
enable	- TRUE if calculations are enabled, FALSE otherwise

Definition at line 424 of file vtc.c.

◆ VT_GetDecoderFormatConversion()

E_FORMAT_CONVERSION VT_GetDecoderFormatConversion ( void * context )

Return the current decoder format conversion.

Parameters

context - transformation calculator context

Returns: Decoder format conversion

Definition at line 939 of file vtc.c.

◆ VT_GetDecoderStatus()

E_STB_AV_DECODER_STATUS VT_GetDecoderStatus ( void * context )

Get the decoder status.

Parameters

context - transformation calculator context

Returns: The decoder status

Definition at line 1049 of file vtc.c.

◆ VT_GetDisplayAspectRatio()

E_ASPECT_RATIO VT_GetDisplayAspectRatio ( void * context )

Get display aspect ratio.

Parameters

context - transformation calculator context

Returns: E_ASPECT_RATIO of display

Definition at line 533 of file vtc.c.

◆ VT_GetScreenResolution()

void VT_GetScreenResolution	(	void *	context,
		U16BIT *	width,
		U16BIT *	height
	)

Return the current screen resolution.

Parameters

context	- transformation calculator context
width	- screen width
height	- screen height

Definition at line 960 of file vtc.c.

◆ VT_GetVideoAspectRatio()

E_ASPECT_RATIO VT_GetVideoAspectRatio ( void * context )

Get video aspect ratio.

Parameters

context - transformation calculator context

Returns: aspect_ratio - video aspect ratio

Definition at line 492 of file vtc.c.

◆ VT_GetVideoResolution()

void VT_GetVideoResolution	(	void *	context,
		U16BIT *	width,
		U16BIT *	height
	)

Return the current video resolution.

Parameters

context	- transformation calculator context
width	- video width
height	- video height

Definition at line 977 of file vtc.c.

◆ VT_GetVideoTransformation()

void VT_GetVideoTransformation	(	void *	context,
		S_RECTANGLE *	input_rect,
		S_RECTANGLE *	output_rect
	)

Get the current video transfromation rectangles.

Parameters

context	- transformation calculator context
input_rect	- input rectangle for transformation
output_rect	- output rectangle for transformation

Definition at line 863 of file vtc.c.

◆ VT_GetWss()

void VT_GetWss	(	void *	context,
		U8BIT *	wss
	)

Return WSS (wide-screen signalling) value.

Parameters

context	- transformation calculator context
wss	- WSS value

Definition at line 879 of file vtc.c.

◆ VT_IsOsdScaled()

BOOLEAN VT_IsOsdScaled ( void * context )

Check if osd must be scaled due to MHEG scene aspect ratio.

Parameters

context - transformation calculator context

Returns: TRUE if osd scaling is required, FALSE otherwise

Definition at line 1007 of file vtc.c.

◆ VT_Open()

void* VT_Open ( S_VT_OPTIONS * options )

Open video transformation manager.

Parameters

options - transformation manager options

Returns: Pointer to manager context, NULL if cannot be created

Definition at line 348 of file vtc.c.

◆ VT_SetAfd()

void VT_SetAfd	(	void *	context,
		U8BIT	afd_value
	)

Set current AFD (active format descriptor value)

Parameters

context	- transformation calculator context
afd_value	- AFD value

Definition at line 446 of file vtc.c.

◆ VT_SetAppScaling()

void VT_SetAppScaling	(	void *	context,
		S_RECTANGLE *	window
	)

Set application scaling information.

Parameters

context	- transformation calculator context
window	- output window (screen CS)

Note: When window is NULL, application scaling is turned off

Definition at line 686 of file vtc.c.

◆ VT_SetCustomModeCallback()

void VT_SetCustomModeCallback	(	void *	context,
		F_VT_CUSTOM_MODE_CALLBACK	callback
	)

Set customer mode callback.

Parameters

context	- transformation calculator context
callback	- callback

Definition at line 613 of file vtc.c.

◆ VT_SetDecoderStatus()

void VT_SetDecoderStatus	(	void *	context,
		E_STB_AV_DECODER_STATUS	status
	)

Set the decoder status.

Parameters

context	- transformation calculator context
status	- New decoder status

Definition at line 1029 of file vtc.c.

◆ VT_SetDisplayAspectRatio()

void VT_SetDisplayAspectRatio	(	void *	context,
		E_ASPECT_RATIO	aspect_ratio
	)

Set display aspect ratio.

Parameters

context	- transformation calculator context
aspect_ratio	- video aspect ratio

Definition at line 548 of file vtc.c.

◆ VT_SetHbbtvWindow()

void VT_SetHbbtvWindow	(	void *	context,
		S_RECTANGLE *	output
	)

Set HBBTV output window.

Parameters

context	- transformation calculator context
output	- window

Definition at line 832 of file vtc.c.

◆ VT_SetMhegAspectRatio()

void VT_SetMhegAspectRatio	(	void *	context,
		E_ASPECT_RATIO	aspect_ratio
	)

Set MHEG-5 aspect ratio.

Set MHEG5 scene aspect ratio.

Parameters

context	- transformation calculator context
aspect_ratio	- MHEG5 scene aspect ratio

Definition at line 510 of file vtc.c.

◆ VT_SetMhegScaling()

void VT_SetMhegScaling	(	void *	context,
		S_RECTANGLE *	scaling
	)

Set MHEG-5 scaling information.

Parameters

context	- transformation calculator context
scaling	- scaling and positioning transformation

Note: When scaling is NULL, scaling is ignored and the behaviour will be as if full screen video is mapped to the full screen.

Definition at line 657 of file vtc.c.

◆ VT_SetMhegScalingResolution()

void VT_SetMhegScalingResolution	(	void *	context,
		U16BIT	width,
		U16BIT	height
	)

Set MHEG5 scaling resolution.

Set Voyager scaling resolution.

Parameters

context	- transformation calculator context
width
height

Definition at line 633 of file vtc.c.

◆ VT_SetMhegVideoAlignment()

void VT_SetMhegVideoAlignment	(	void *	context,
		E_VIDEO_ASPECT_MODE	mode
	)

Set widescreeen alignment mode for MHEG-5.

Parameters

context	- transformation calculator context
wam	- widescreen alignment mode

Definition at line 770 of file vtc.c.

◆ VT_SetProfileHbbtv()

void VT_SetProfileHbbtv	(	void *	context,
		BOOLEAN	enable
	)

Set profile to apply HBBTV option.

Parameters

context	- transformation calculator context
enable	- TRUE turns HBBTV option on

Definition at line 811 of file vtc.c.

◆ VT_SetProfileMheg5()

void VT_SetProfileMheg5	(	void *	context,
		BOOLEAN	enable
	)

Set profile to apply MHEG5 option.

Parameters

context	- transformation calculator context
enable	- TRUE turns MHEG5 option on

Definition at line 790 of file vtc.c.

◆ VT_SetScreenResolution()

void VT_SetScreenResolution	(	void *	context,
		U16BIT	width,
		U16BIT	height
	)

Set screen resolution.

Parameters

context	- transformation calculator context
width	- screen width (in pixels)
height	- screen height (in pixels)

Definition at line 744 of file vtc.c.

◆ VT_SetUserPreferenceChangedCallback()

void VT_SetUserPreferenceChangedCallback	(	void *	context,
		F_VT_NOTIFICATION_CALLBACK	callback,
		void *	user_data
	)

Set user preference change callback.

The callback is called whenever the video transformation changes as a result of a change in user preferences.

Parameters

context	- transformation calculator context
callback	- the callback to call
user_data	- user data to pass to the callback

Definition at line 921 of file vtc.c.

◆ VT_SetVideoAlignmentPref()

void VT_SetVideoAlignmentPref	(	void *	context,
		E_VIDEO_ASPECT_MODE	alignment
	)

Set user preference for video aspect ratio alignment.

Set user preference for video aspect ratio.

Parameters

context	- transformation calculator context
alignment	- New video alignment preference:

Definition at line 572 of file vtc.c.

◆ VT_SetVideoAspectRatio()

void VT_SetVideoAspectRatio	(	void *	context,
		E_ASPECT_RATIO	aspect_ratio
	)

Set video aspect ratio.

Parameters

context	- transformation calculator context
aspect_ratio	- video aspect ratio

Definition at line 469 of file vtc.c.

◆ VT_SetVideoChangedCallback()

void VT_SetVideoChangedCallback	(	void *	context,
		F_VT_NOTIFICATION_CALLBACK	callback,
		void *	user_data
	)

Set video change callback.

The callback is called whenever the video transformation is changed for any reason.

Parameters

context	- transformation calculator context
callback	- the callback to call
user_data	- user data to pass to the callback

Definition at line 898 of file vtc.c.

◆ VT_SetVideoResolution()

void VT_SetVideoResolution	(	void *	context,
		U16BIT	width,
		U16BIT	height
	)

Set video resolution.

Parameters

context	- transformation calculator context
width	- video width (in pixels)
height	- video height (in pixels)

Definition at line 717 of file vtc.c.

Classes

Macros

Typedefs

Enumerations

Functions

Detailed Description

Function Documentation

◆ VT_Close()

◆ VT_Enable()

◆ VT_GetDecoderFormatConversion()

◆ VT_GetDecoderStatus()

◆ VT_GetDisplayAspectRatio()

◆ VT_GetScreenResolution()

◆ VT_GetVideoAspectRatio()

◆ VT_GetVideoResolution()

◆ VT_GetVideoTransformation()

◆ VT_GetWss()

◆ VT_IsOsdScaled()

◆ VT_Open()

◆ VT_SetAfd()

◆ VT_SetAppScaling()

◆ VT_SetCustomModeCallback()

◆ VT_SetDecoderStatus()

◆ VT_SetDisplayAspectRatio()

◆ VT_SetHbbtvWindow()

◆ VT_SetMhegAspectRatio()

◆ VT_SetMhegScaling()

◆ VT_SetMhegScalingResolution()

◆ VT_SetMhegVideoAlignment()

◆ VT_SetProfileHbbtv()

◆ VT_SetProfileMheg5()

◆ VT_SetScreenResolution()

◆ VT_SetUserPreferenceChangedCallback()

◆ VT_SetVideoAlignmentPref()

◆ VT_SetVideoAspectRatio()

◆ VT_SetVideoChangedCallback()

◆ VT_SetVideoResolution()