Version: 12 Dec 2024

ml_media_cea708_caption.h

Classes

	Name
struct	MLCea708CaptionColor Cea708 Caption Color.
struct	MLCea708CaptionPenAttr Cea708 Caption Pen Attributes.
struct	MLCea708CaptionPenColor Cea708 Caption Pen Color.
struct	MLCea708CaptionPenLocation Cea708 Caption Pen Location.
struct	MLCea708CaptionWindowAttr Cea708 Caption Window Attributes.
struct	MLCea708CaptionWindow Cea708 Caption Window.
struct	MLCea708CaptionEvent Cea708 Caption Event.

Types

	Name
typedef struct MLCea708CaptionColor	MLCea708CaptionColor Cea708 Caption Color.
typedef struct MLCea708CaptionPenAttr	MLCea708CaptionPenAttr Cea708 Caption Pen Attributes.
typedef struct MLCea708CaptionPenColor	MLCea708CaptionPenColor Cea708 Caption Pen Color.
typedef struct MLCea708CaptionPenLocation	MLCea708CaptionPenLocation Cea708 Caption Pen Location.
typedef struct MLCea708CaptionWindowAttr	MLCea708CaptionWindowAttr Cea708 Caption Window Attributes.
typedef struct MLCea708CaptionWindow	MLCea708CaptionWindow Cea708 Caption Window.
typedef struct MLCea708CaptionEvent	MLCea708CaptionEvent Cea708 Caption Event.
typedef void()(MLHandle cc_handle, const MLCea708CaptionEvent event, void *data)	MLMediaCea708ParserEmitEventCallback Callback signature called when Cea708 parser emits event.

Enums

	Name
enum	Anonymous Enum 17 { MLCea708CaptionWindows_Max = 8 } Cea708 Caption maximum windows constant.
enum	Anonymous Enum 18 { MLCea708CaptionEmitCommandBuffer_MaxSize = 20 } Maximum size for Cea708 Caption Emit command buffers.
enum	MLCea708CaptionEmitCommand { MLCea708CaptionEmitCommand_Buffer = 1, MLCea708CaptionEmitCommand_Control = 2, MLCea708CaptionEmitCommand_CWX = 3, MLCea708CaptionEmitCommand_CLW = 4, MLCea708CaptionEmitCommand_DSW = 5, MLCea708CaptionEmitCommand_HDW = 6, MLCea708CaptionEmitCommand_TGW = 7, MLCea708CaptionEmitCommand_DLW = 8, MLCea708CaptionEmitCommand_DLY = 9, MLCea708CaptionEmitCommand_DLC = 10, MLCea708CaptionEmitCommand_RST = 11, MLCea708CaptionEmitCommand_SPA = 12, MLCea708CaptionEmitCommand_SPC = 13, MLCea708CaptionEmitCommand_SPL = 14, MLCea708CaptionEmitCommand_SWA = 15, MLCea708CaptionEmitCommand_DFX = 16, MLCea708CaptionEmitCommand_Ensure32Bits = 0x7FFFFFFF } Cea708 Caption Emit Commands constants.
enum	MLCea708CaptionEmitCommandControl { MLCea708CaptionEmitCommandControl_ETX = 0x03, MLCea708CaptionEmitCommandControl_BS = 0x08, MLCea708CaptionEmitCommandControl_FF = 0x0c, MLCea708CaptionEmitCommandControl_HCR = 0x0e, MLCea708CaptionEmitCommandControl_Ensure32Bits = 0x7FFFFFFF } Cea708 Caption Emit Command Control constants.
enum	MLCea708CaptionColorOpacity { MLCea708CaptionColorOpacity_SOLID = 0, MLCea708CaptionColorOpacity_FLASH = 1, MLCea708CaptionColorOpacity_TRANSLUCENT = 2, MLCea708CaptionColorOpacity_TRANSPARENT = 3, MLCea708CaptionColorOpacity_Ensure32Bits = 0x7FFFFFFF } Cea708 Caption Color Opacity constants.
enum	MLCea708CaptionPenSize { MLCea708CaptionPenSize_SMALL = 0, MLCea708CaptionPenSize_STANDARD = 1, MLCea708CaptionPenSize_LARGE = 2, MLCea708CaptionPenSize_Ensure32Bits = 0x7FFFFFFF } Cea708 Caption Pen Size constants.
enum	MLCea708CaptionPenOffset { MLCea708CaptionPenOffset_SUBSCRIPT = 0, MLCea708CaptionPenOffset_NORMAL = 1, MLCea708CaptionPenOffset_SUPERSCRIPT = 2, MLCea708CaptionPenOffset_Ensure32Bits = 0x7FFFFFFF } Cea708 Caption Pen Offset constants.

Functions

	Name
MLResult	MLMediaCea708ParserCreate(MLHandle * out_handle) Create Cea708 parser object.
MLResult	MLMediaCea708ParserParse(MLHandle cc_handle, const uint8_t * subtitle_data, uint32_t subtitle_data_size) Provide Cea708 parser with subtitle raw data for parsing.
MLResult	MLMediaCea708ParserDestroy(MLHandle cc_handle) Release Cea708 parser object.
MLResult	MLMediaCea708ParserSetEmitEventCallback(MLHandle cc_handle, MLMediaCea708ParserEmitEventCallback on_emit_event_callback, void * data) Set callback to get notified when a caption event has generated.

Enums Documentation

Anonymous Enum 17

Enumerator	Value	Description
MLCea708CaptionWindows_Max	8

Cea708 Caption maximum windows constant.

API Level:

Anonymous Enum 18

Enumerator	Value	Description
MLCea708CaptionEmitCommandBuffer_MaxSize	20

Maximum size for Cea708 Caption Emit command buffers.

API Level:

MLCea708CaptionEmitCommand

Enumerator	Value	Description
MLCea708CaptionEmitCommand_Buffer	1	Buffer.
MLCea708CaptionEmitCommand_Control	2	Control.
MLCea708CaptionEmitCommand_CWX	3	SetCurrentWindow tells the caption decoder which window the following commands describe: SetWindowAttributes SetPenAttributes SetPenColor SetPenLocation. If the window specified has not already been created with a DefineWindow command then, SetCurrentWindow and the window property commands can be safely ignored.
MLCea708CaptionEmitCommand_CLW	4	ClearWindows clears all the windows specified in the 8 bit window bitmap.
MLCea708CaptionEmitCommand_DSW	5	DisplayWindows displays all the windows specified in the 8 bit window bitmap.
MLCea708CaptionEmitCommand_HDW	6	HideWindows hides all the windows specified in the 8 bit window bitmap.
MLCea708CaptionEmitCommand_TGW	7	ToggleWindows hides all displayed windows, and displays all hidden windows specified in the 8 bit window bitmap.
MLCea708CaptionEmitCommand_DLW	8	DeleteWindows deletes all the windows specified in the 8 bit window bitmap. If the current window, as specified by the last SetCurrentWindow command, is deleted then the current window becomes undefined and the window attribute commands should have no effect until after the next SetCurrentWindow or DefineWindow command.
MLCea708CaptionEmitCommand_DLY	9	Delay suspends all processing of the current service, except for DelayCancel and Reset scanning.
MLCea708CaptionEmitCommand_DLC	10	DelayCancel terminates any active delay and resumes normal command processing. DelayCancel should be scanned for during a Delay.
MLCea708CaptionEmitCommand_RST	11	Reset deletes all windows, cancels any active delay, and clears the buffer before the Reset command. Reset should be scanned for during a Delay.
MLCea708CaptionEmitCommand_SPA	12	The SetPenAttributes command specifies how certain attributes of subsequent characters are to be rendered in the current window, until the next SetPenAttributes command.
MLCea708CaptionEmitCommand_SPC	13	SetPenColor sets the foreground, background, and edge color for the subsequent characters.
MLCea708CaptionEmitCommand_SPL	14	SetPenLocation sets the location of for the next bit of appended text in the current window. It has two parameters, row and column.
MLCea708CaptionEmitCommand_SWA	15	SetWindowAttributes Sets the window attributes of the current window.
MLCea708CaptionEmitCommand_DFX	16	DefineWindow0-7 creates one of the eight windows used by a caption decoder.
MLCea708CaptionEmitCommand_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Cea708 Caption Emit Commands constants.

API Level:

MLCea708CaptionEmitCommandControl

Enumerator	Value	Description
MLCea708CaptionEmitCommandControl_ETX	0x03	End of Text.
MLCea708CaptionEmitCommandControl_BS	0x08
MLCea708CaptionEmitCommandControl_FF	0x0c
MLCea708CaptionEmitCommandControl_HCR	0x0e
MLCea708CaptionEmitCommandControl_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Cea708 Caption Emit Command Control constants.

API Level:

MLCea708CaptionColorOpacity

Enumerator	Value	Description
MLCea708CaptionColorOpacity_SOLID	0
MLCea708CaptionColorOpacity_FLASH	1
MLCea708CaptionColorOpacity_TRANSLUCENT	2
MLCea708CaptionColorOpacity_TRANSPARENT	3
MLCea708CaptionColorOpacity_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Cea708 Caption Color Opacity constants.

API Level:

MLCea708CaptionPenSize

Enumerator	Value	Description
MLCea708CaptionPenSize_SMALL	0
MLCea708CaptionPenSize_STANDARD	1
MLCea708CaptionPenSize_LARGE	2
MLCea708CaptionPenSize_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Cea708 Caption Pen Size constants.

API Level:

MLCea708CaptionPenOffset

Enumerator	Value	Description
MLCea708CaptionPenOffset_SUBSCRIPT	0
MLCea708CaptionPenOffset_NORMAL	1
MLCea708CaptionPenOffset_SUPERSCRIPT	2
MLCea708CaptionPenOffset_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Cea708 Caption Pen Offset constants.

API Level:

Types Documentation

MLCea708CaptionColor

typedef struct MLCea708CaptionColor MLCea708CaptionColor;

Cea708 Caption Color.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLCea708CaptionPenAttr

typedef struct MLCea708CaptionPenAttr MLCea708CaptionPenAttr;

Cea708 Caption Pen Attributes.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLCea708CaptionPenColor

typedef struct MLCea708CaptionPenColor MLCea708CaptionPenColor;

Cea708 Caption Pen Color.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLCea708CaptionPenLocation

typedef struct MLCea708CaptionPenLocation MLCea708CaptionPenLocation;

Cea708 Caption Pen Location.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLCea708CaptionWindowAttr

typedef struct MLCea708CaptionWindowAttr MLCea708CaptionWindowAttr;

Cea708 Caption Window Attributes.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLCea708CaptionWindow

typedef struct MLCea708CaptionWindow MLCea708CaptionWindow;

Cea708 Caption Window.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLCea708CaptionEvent

typedef struct MLCea708CaptionEvent MLCea708CaptionEvent;

Cea708 Caption Event.

More Info

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLMediaCea708ParserEmitEventCallback

typedef void(* MLMediaCea708ParserEmitEventCallback) (MLHandle cc_handle, const MLCea708CaptionEvent *event, void *data);

Callback signature called when Cea708 parser emits event.

Parameters


	cc_handle	MLHandle is a Cea708 Parser instance for which callback was called.
	event	MLCea708CaptionEvent conveys caption event to listener.
	data	Custom data to be returned when callback is fired.

API Level:

Functions Documentation

MLMediaCea708ParserCreate

MLResult MLMediaCea708ParserCreate(
    MLHandle * out_handle
)

Create Cea708 parser object.

Parameters


MLHandle *	out_handle	A pointer to an MLHandle which will contain the handle to the Cea708 parser. If this operation fails, out_handle will be ML_INVALID_HANDLE.

Returns


MLResult	MLResult_AllocFailed	The operation failed with memory allocation error.
MLResult	MLResult_InvalidParam	out_handle is null.
MLResult	MLResult_Ok	Internal Cea708 parser object was created successfully.

Required Permissions:

None

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLMediaCea708ParserParse

MLResult MLMediaCea708ParserParse(
    MLHandle cc_handle,
    const uint8_t * subtitle_data,
    uint32_t subtitle_data_size
)

Provide Cea708 parser with subtitle raw data for parsing.

Parameters


MLHandle	cc_handle	A handle to a Cea708 parser.
const uint8_t *	subtitle_data	Subtitle data of MLMediaPlayerSubtitleData.
uint32_t	subtitle_data_size	Subtitle data size of MLMediaPlayerSubtitleData.

Returns


MLResult	MLResult_InvalidParam	the input parameter(s) is(are) wrong.
MLResult	MLResult_Ok	the operation was successful.
MLResult	MLMediaGenericResult_NoInit	Cea708 parser was not properly built or initialized.

Required Permissions:

None

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLMediaCea708ParserDestroy

MLResult MLMediaCea708ParserDestroy(
    MLHandle cc_handle
)

Release Cea708 parser object.

Parameters


MLHandle	cc_handle	A handle to a Cea708 parser.

Returns


MLResult	MLResult_InvalidParam	cc_handle is wrong or not found.
MLResult	MLResult_Ok	internal Cea708 parser object was released successfully.

Required Permissions:

None

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

MLMediaCea708ParserSetEmitEventCallback

MLResult MLMediaCea708ParserSetEmitEventCallback(
    MLHandle cc_handle,
    MLMediaCea708ParserEmitEventCallback on_emit_event_callback,
    void * data
)

Set callback to get notified when a caption event has generated.

Parameters


MLHandle	cc_handle	A handle to a Cea708 parser.
MLMediaCea708ParserEmitEventCallback	on_emit_event_callback	Function pointer for event callback. See MLMediaCea708ParserEmitEventCallback() callback declaration and comments for explanation on expected callback parameters. This can be 'NULL' to unset the callback.
void *	data	Custom data to be returned when callback is fired.

Returns


MLResult	MLResult_InvalidParam	Passed `cc_handle` handle was not found.
MLResult	MLResult_Ok	Callback was successfully set.

Required Permissions:

None

Deprecated

Deprecated since 1.4.0. Scheduled for removal.

API Level:

Source code

// %BANNER_BEGIN%
// ---------------------------------------------------------------------
// %COPYRIGHT_BEGIN%
// Copyright (c) 2017 Magic Leap, Inc. All Rights Reserved.
// Use of this file is governed by the Software License Agreement,
// located here: https://www.magicleap.com/software-license-agreement-ml2
// Terms and conditions applicable to third-party materials accompanying
// this distribution may also be found in the top-level NOTICE file
// appearing herein.
// %COPYRIGHT_END%
// ---------------------------------------------------------------------
// %BANNER_END%

#pragma once

#include "ml_api.h"
#include "ml_types.h"

ML_EXTERN_C_BEGIN

enum {
  MLCea708CaptionWindows_Max = 8
};

enum {
  MLCea708CaptionEmitCommandBuffer_MaxSize = 20,
};

typedef enum MLCea708CaptionEmitCommand {
  MLCea708CaptionEmitCommand_Buffer     = 1,
  MLCea708CaptionEmitCommand_Control    = 2,
  MLCea708CaptionEmitCommand_CWX        = 3,
  MLCea708CaptionEmitCommand_CLW        = 4,
  MLCea708CaptionEmitCommand_DSW        = 5,
  MLCea708CaptionEmitCommand_HDW        = 6,
  MLCea708CaptionEmitCommand_TGW        = 7,
  MLCea708CaptionEmitCommand_DLW        = 8,
  MLCea708CaptionEmitCommand_DLY        = 9,
  MLCea708CaptionEmitCommand_DLC        = 10,
  MLCea708CaptionEmitCommand_RST        = 11,
  MLCea708CaptionEmitCommand_SPA        = 12,
  MLCea708CaptionEmitCommand_SPC        = 13,
  MLCea708CaptionEmitCommand_SPL        = 14,
  MLCea708CaptionEmitCommand_SWA        = 15,
  MLCea708CaptionEmitCommand_DFX        = 16,
  MLCea708CaptionEmitCommand_Ensure32Bits = 0x7FFFFFFF
} MLCea708CaptionEmitCommand;

typedef enum MLCea708CaptionEmitCommandControl {
  MLCea708CaptionEmitCommandControl_ETX    = 0x03,
  MLCea708CaptionEmitCommandControl_BS     = 0x08,
  MLCea708CaptionEmitCommandControl_FF     = 0x0c,
  MLCea708CaptionEmitCommandControl_HCR    = 0x0e,
  MLCea708CaptionEmitCommandControl_Ensure32Bits = 0x7FFFFFFF
} MLCea708CaptionEmitCommandControl;

typedef enum MLCea708CaptionColorOpacity {
  MLCea708CaptionColorOpacity_SOLID           = 0,
  MLCea708CaptionColorOpacity_FLASH           = 1,
  MLCea708CaptionColorOpacity_TRANSLUCENT     = 2,
  MLCea708CaptionColorOpacity_TRANSPARENT     = 3,
  MLCea708CaptionColorOpacity_Ensure32Bits = 0x7FFFFFFF
} MLCea708CaptionColorOpacity;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionColor {
  MLCea708CaptionColorOpacity opacity;
  int32_t red;
  int32_t green;
  int32_t blue;
} MLCea708CaptionColor;

typedef enum MLCea708CaptionPenSize {
  MLCea708CaptionPenSize_SMALL     = 0,
  MLCea708CaptionPenSize_STANDARD  = 1,
  MLCea708CaptionPenSize_LARGE     = 2,
  MLCea708CaptionPenSize_Ensure32Bits = 0x7FFFFFFF
} MLCea708CaptionPenSize;

typedef enum MLCea708CaptionPenOffset {
  MLCea708CaptionPenOffset_SUBSCRIPT     = 0,
  MLCea708CaptionPenOffset_NORMAL        = 1,
  MLCea708CaptionPenOffset_SUPERSCRIPT   = 2,
  MLCea708CaptionPenOffset_Ensure32Bits = 0x7FFFFFFF
} MLCea708CaptionPenOffset;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionPenAttr {
  MLCea708CaptionPenSize pen_size;
  MLCea708CaptionPenOffset pen_offset;
  int32_t text_tag;
  int32_t font_tag;
  int32_t edge_type;
  bool underline;
  bool italic;
} MLCea708CaptionPenAttr;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionPenColor {
  MLCea708CaptionColor foreground_color;
  MLCea708CaptionColor background_color;
  MLCea708CaptionColor edge_color;
} MLCea708CaptionPenColor;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionPenLocation {
  int32_t row;
  int32_t column;
} MLCea708CaptionPenLocation;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionWindowAttr {
  MLCea708CaptionColor fill_color;
  MLCea708CaptionColor border_color;
  int32_t border_type;
  bool word_wrap;
  int32_t print_direction;
  int32_t scroll_direction;
  int32_t justify;
  int32_t effect_direction;
  int32_t effect_speed;
  int32_t display_effect;
} MLCea708CaptionWindowAttr;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionWindow {
  int32_t id;
  bool visible;
  bool row_lock;
  bool column_lock;
  int32_t priority;
  bool relative_positioning;
  int32_t anchor_vertical;
  int32_t anchor_horizontal;
  int32_t anchor_id;
  int32_t row_count;
  int32_t column_count;
  int32_t pen_style;
  int32_t window_style;
} MLCea708CaptionWindow;

typedef ML_DEPRECATED_MSG("Use standard Android SDK APIs.") struct MLCea708CaptionEvent {
  MLCea708CaptionEmitCommand type;
  const void *obj;
} MLCea708CaptionEvent;

ML_DEPRECATED_MSG("Use standard Android SDK APIs.")
ML_API MLResult ML_CALL MLMediaCea708ParserCreate(MLHandle *out_handle);

ML_DEPRECATED_MSG("Use standard Android SDK APIs.")
ML_API MLResult ML_CALL MLMediaCea708ParserParse(MLHandle cc_handle, const uint8_t *subtitle_data, uint32_t subtitle_data_size);

ML_DEPRECATED_MSG("Use standard Android SDK APIs.")
ML_API MLResult ML_CALL MLMediaCea708ParserDestroy(MLHandle cc_handle);

typedef void(*MLMediaCea708ParserEmitEventCallback)(MLHandle cc_handle, const MLCea708CaptionEvent *event, void *data);

ML_DEPRECATED_MSG("Use standard Android SDK APIs.")
ML_API MLResult ML_CALL MLMediaCea708ParserSetEmitEventCallback(MLHandle cc_handle, MLMediaCea708ParserEmitEventCallback on_emit_event_callback, void *data);

ML_EXTERN_C_END

ml_media_cea708_caption.h

Classes​

Types​

Enums​

Functions​

Enums Documentation​

Anonymous Enum 17​

Anonymous Enum 18​

MLCea708CaptionEmitCommand​

MLCea708CaptionEmitCommandControl​

MLCea708CaptionColorOpacity​

MLCea708CaptionPenSize​

MLCea708CaptionPenOffset​

Types Documentation​

MLCea708CaptionColor​

MLCea708CaptionPenAttr​

MLCea708CaptionPenColor​

MLCea708CaptionPenLocation​

MLCea708CaptionWindowAttr​

MLCea708CaptionWindow​

MLCea708CaptionEvent​

MLMediaCea708ParserEmitEventCallback​

Functions Documentation​

MLMediaCea708ParserCreate​

MLMediaCea708ParserParse​

MLMediaCea708ParserDestroy​

MLMediaCea708ParserSetEmitEventCallback​

Source code​

Classes

Types

Enums

Functions

Enums Documentation

Anonymous Enum 17

Anonymous Enum 18

MLCea708CaptionEmitCommand

MLCea708CaptionEmitCommandControl

MLCea708CaptionColorOpacity

MLCea708CaptionPenSize

MLCea708CaptionPenOffset

Types Documentation

MLCea708CaptionColor

MLCea708CaptionPenAttr

MLCea708CaptionPenColor

MLCea708CaptionPenLocation

MLCea708CaptionWindowAttr

MLCea708CaptionWindow

MLCea708CaptionEvent

MLMediaCea708ParserEmitEventCallback

Functions Documentation

MLMediaCea708ParserCreate

MLMediaCea708ParserParse

MLMediaCea708ParserDestroy

MLMediaCea708ParserSetEmitEventCallback

Source code