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/* GStreamer
* Copyright (C) <2018> Edward Hervey <edward@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_VIDEO_ANC_H__
#define __GST_VIDEO_ANC_H__
#include <gst/gst.h>
#include <gst/video/video-format.h>
#include <gst/video/video-info.h>
G_BEGIN_DECLS
typedef struct _GstVideoAncillary GstVideoAncillary;
/**
* GstVideoAncillary:
* @DID: The Data Identifier
* @SDID_block_number: The Secondary Data Identifier (if type 2) or the Data
* Block Number (if type 1)
* @data_count: The amount of data (in bytes) in @data (max 255 bytes)
* @data: (array length=data_count): The user data content of the Ancillary packet.
* Does not contain the ADF, DID, SDID nor CS.
*
* Video Ancillary data, according to SMPTE-291M specification.
*
* Note that the contents of the data are always stored as 8bit data (i.e. do not contain
* the parity check bits).
*
* Since: 1.16
*/
struct _GstVideoAncillary {
guint8 DID;
guint8 SDID_block_number;
guint8 data_count;
guint8 data[256];
/*< private >*/
/* Padding for future extension */
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstVideoAncillaryDID:
*
* Since: 1.16
*/
typedef enum {
GST_VIDEO_ANCILLARY_DID_UNDEFINED = 0x00,
GST_VIDEO_ANCILLARY_DID_DELETION = 0x80,
GST_VIDEO_ANCILLARY_DID_HANC_3G_AUDIO_DATA_FIRST = 0xa0,
GST_VIDEO_ANCILLARY_DID_HANC_3G_AUDIO_DATA_LAST = 0xa7,
GST_VIDEO_ANCILLARY_DID_HANC_HDTV_AUDIO_DATA_FIRST = 0xe0,
GST_VIDEO_ANCILLARY_DID_HANC_HDTV_AUDIO_DATA_LAST = 0xe7,
GST_VIDEO_ANCILLARY_DID_HANC_SDTV_AUDIO_DATA_1_FIRST = 0xec,
GST_VIDEO_ANCILLARY_DID_HANC_SDTV_AUDIO_DATA_1_LAST = 0xef,
GST_VIDEO_ANCILLARY_DID_CAMERA_POSITION = 0xf0,
GST_VIDEO_ANCILLARY_DID_HANC_ERROR_DETECTION = 0xf4,
GST_VIDEO_ANCILLARY_DID_HANC_SDTV_AUDIO_DATA_2_FIRST = 0xf8,
GST_VIDEO_ANCILLARY_DID_HANC_SDTV_AUDIO_DATA_2_LAST = 0xff,
} GstVideoAncillaryDID;
/**
* GST_VIDEO_ANCILLARY_DID16:
* @anc: a #GstVideoAncillary
*
* Returns the #GstVideoAncillaryDID16 of the ancillary data.
*
* Since: 1.16
*
* Returns: a #GstVideoAncillaryDID16 identifier
*/
#define GST_VIDEO_ANCILLARY_DID16(anc) ((guint16)((anc)->DID) << 8 | (guint16)((anc)->SDID_block_number))
/**
* GstVideoAncillaryDID16:
* @GST_VIDEO_ANCILLARY_DID16_S334_EIA_708: CEA 708 Ancillary data according to SMPTE 334
* @GST_VIDEO_ANCILLARY_DID16_S334_EIA_608: CEA 608 Ancillary data according to SMPTE 334
* @GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR: AFD/Bar Ancillary data according to SMPTE 2016-3 (Since: 1.18)
*
* Some know types of Ancillary Data identifiers.
*
* Since: 1.16
*/
typedef enum {
GST_VIDEO_ANCILLARY_DID16_S334_EIA_708 = 0x6101,
GST_VIDEO_ANCILLARY_DID16_S334_EIA_608 = 0x6102,
GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR = 0x4105,
} GstVideoAncillaryDID16;
/**
* GstAncillaryMetaField:
* @GST_ANCILLARY_META_FIELD_PROGRESSIVE: Progressive or no field specified (default)
* @GST_ANCILLARY_META_FIELD_INTERLACED_FIRST: Interlaced first field
* @GST_ANCILLARY_META_FIELD_INTERLACED_SECOND: Interlaced second field
*
* Location of a @GstAncillaryMeta.
*
* Since: 1.24
*/
typedef enum {
GST_ANCILLARY_META_FIELD_PROGRESSIVE = 0x00,
GST_ANCILLARY_META_FIELD_INTERLACED_FIRST = 0x10,
GST_ANCILLARY_META_FIELD_INTERLACED_SECOND = 0x11,
} GstAncillaryMetaField;
/**
* GstAncillaryMeta:
* @meta: Parent #GstMeta
* @field: The field where the ancillary data is located
* @c_not_y_channel: Which channel (luminance or chrominance) the ancillary
* data is located. 0 if content is SD or stored in the luminance channel
* (default). 1 if HD and stored in the chrominance channel.
* @line: The line on which the ancillary data is located (max 11bit). There
* are two special values: 0x7ff if no line is specified (default), 0x7fe
* to specify the ancillary data is on any valid line before active video
* @offset: The location of the ancillary data packet in a SDI raster relative
* to the start of active video (max 12bits). A value of 0 means the ADF of
* the ancillary packet starts immediately following SAV. There are 3
* special values: 0xfff: No specified location (default), 0xffe: within
* HANC data space, 0xffd: within the ancillary data space located between
* SAV and EAV
* @DID: Data Identified
* @SDID_block_number: Secondary Data identification (if type 2) or Data block
* number (if type 1)
* @data_count: The amount of user data
* @data: The User data
* @checksum: The checksum of the ADF
*
* #GstMeta for carrying SMPTE-291M Ancillary data. Note that all the ADF fields
* (@DID to @checksum) are 10bit values with parity/non-parity high-bits set.
*
* Since: 1.24
*/
typedef struct {
GstMeta meta;
GstAncillaryMetaField field; /* Field location */
gboolean c_not_y_channel; /* 1 if content is HD and the ANC data is stored
in the chrominance channel. 0 if content is
SD or the ANC data is stored in the luminance
channel (default) */
guint16 line; /* The line on which this ANC data is located.
*
* 11bit value
*
* Special values:
* * 0x7ff : No line specified (default)
* * 0x7fe : Any valid line before active video */
guint16 offset; /* Location of the ANC data packet in a SDI
* raster relative to SAV. A value of 0 means
* the ADF of the ANC data packet beings
* immediately following SAV.
*
* 12bits value
*
* The unit is 10-bit words of the indicated
* data stream and data channel
*
* Special values:
* * 0xfff: No specified horizontal location (default)
* * 0xffe: Within HANC data space
* * 0xffd: Within the ancillary data space located
* between SAV and EAV
*/
/* EXCLUDED from ANC RTP are the multi-stream properties (ex: stereoscopic
* video). That information should be conveyed by having separate VANC
* streams */
/* What follows are all the fields making up a ST 291 ADF packet. All of the
* fields are stored as 10bit, including the parity/non-parity high-bits set.
*
* To access the 8bit content, just cast the value */
guint16 DID; /* Data Identifier (10 bit) */
guint16 SDID_block_number; /* Secondary data identification (If type 2) or
* Data Block number (if type 1). Value is
* 10bit */
guint16 data_count; /* The amount of User Data. Only the low 8 bits are to be used */
guint16 *data; /* The User Data (10bit) */
guint16 checksum; /* The checksum (10bit) */
} GstAncillaryMeta;
GST_VIDEO_API GType gst_ancillary_meta_api_get_type(void);
#define GST_ANCILLARY_META_API_TYPE (gst_ancillary_meta_api_get_type())
GST_VIDEO_API const GstMetaInfo *gst_ancillary_meta_get_info(void);
#define GST_ANCILLARY_META_INFO (gst_ancillary_meta_get_info())
GST_VIDEO_API GstAncillaryMeta *
gst_buffer_add_ancillary_meta(GstBuffer *buffer);
/**
* gst_buffer_get_ancillary_meta:
* @b: A #GstBuffer
*
* Gets the #GstAncillaryMeta that might be present on @b.
*
* Note: It is quite likely that there might be more than one ancillary meta on
* a given buffer. This function will only return the first one. See gst_buffer_iterate_ancillary_meta() for a way to iterate over all ancillary metas of the buffer.
*
* Since: 1.24
*
* Returns: The first #GstAncillaryMeta present on @b, or %NULL if none are
* present.
*/
#define gst_buffer_get_ancillary_meta(b) \
((GstAncillaryMeta*)gst_buffer_get_meta((b), GST_ANCILLARY_META_API_TYPE)
/**
* gst_buffer_iterate_ancillary_meta:
* @b: A #GstBuffer
* @s: (out caller-allocates): An opaque state pointer
*
* Retrieves the next #GstAncillaryMeta after the current one according to
* @s. If @s points to %NULL, the first #GstAncillaryMeta will be returned (if
* any).
*
* @s will be updated with an opaque state pointer.
*
* Since: 1.24
*
* Returns: (transfer none) (nullable): The next #GstAncillaryMeta present on @b
* or %NULL when there are no more items.
*/
#define gst_buffer_iterate_ancillary_meta(b, s) \
((GstAncillaryMeta*)gst_buffer_iterate_meta_filtered((b), (s), GST_ANCILLARY_META_API_TYPE))
/**
* GstVideoAFDValue:
* @GST_VIDEO_AFD_UNAVAILABLE: Unavailable (see note 0 below).
* @GST_VIDEO_AFD_16_9_TOP_ALIGNED: For 4:3 coded frame, letterbox 16:9 image,
* at top of the coded frame. For 16:9 coded frame, full frame 16:9 image,
* the same as the coded frame.
* @GST_VIDEO_AFD_14_9_TOP_ALIGNED: For 4:3 coded frame, letterbox 14:9 image,
* at top of the coded frame. For 16:9 coded frame, pillarbox 14:9 image,
* horizontally centered in the coded frame.
* @GST_VIDEO_AFD_GREATER_THAN_16_9: For 4:3 coded frame, letterbox image with an aspect ratio
* greater than 16:9, vertically centered in the coded frame. For 16:9 coded frame,
* letterbox image with an aspect ratio greater than 16:9.
* @GST_VIDEO_AFD_4_3_FULL_16_9_FULL: For 4:3 coded frame, full frame 4:3 image,
* the same as the coded frame. For 16:9 coded frame, full frame 16:9 image, the same as
* the coded frame.
* @GST_VIDEO_AFD_4_3_FULL_4_3_PILLAR: For 4:3 coded frame, full frame 4:3 image, the same as
* the coded frame. For 16:9 coded frame, pillarbox 4:3 image, horizontally centered in the
* coded frame.
* @GST_VIDEO_AFD_16_9_LETTER_16_9_FULL: For 4:3 coded frame, letterbox 16:9 image, vertically centered in
* the coded frame with all image areas protected. For 16:9 coded frame, full frame 16:9 image,
* with all image areas protected.
* @GST_VIDEO_AFD_14_9_LETTER_14_9_PILLAR: For 4:3 coded frame, letterbox 14:9 image, vertically centered in
* the coded frame. For 16:9 coded frame, pillarbox 14:9 image, horizontally centered in the
* coded frame.
* @GST_VIDEO_AFD_4_3_FULL_14_9_CENTER: For 4:3 coded frame, full frame 4:3 image, with alternative 14:9
* center. For 16:9 coded frame, pillarbox 4:3 image, with alternative 14:9 center.
* @GST_VIDEO_AFD_16_9_LETTER_14_9_CENTER: For 4:3 coded frame, letterbox 16:9 image, with alternative 14:9
* center. For 16:9 coded frame, full frame 16:9 image, with alternative 14:9 center.
* @GST_VIDEO_AFD_16_9_LETTER_4_3_CENTER: For 4:3 coded frame, letterbox 16:9 image, with alternative 4:3
* center. For 16:9 coded frame, full frame 16:9 image, with alternative 4:3 center.
*
* Enumeration of the various values for Active Format Description (AFD)
*
* AFD should be included in video user data whenever the rectangular
* picture area containing useful information does not extend to the full height or width of the coded
* frame. AFD data may also be included in user data when the rectangular picture area containing
* useful information extends to the full height and width of the coded frame.
*
* For details, see Table 6.14 Active Format in:
*
* ATSC Digital Television Standard:
* Part 4 – MPEG-2 Video System Characteristics
*
* https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
*
* and Active Format Description in Complete list of AFD codes
*
* https://en.wikipedia.org/wiki/Active_Format_Description#Complete_list_of_AFD_codes
*
* and SMPTE ST2016-1
*
* Notes:
*
* 1) AFD 0 is undefined for ATSC and SMPTE ST2016-1, indicating that AFD data is not available:
* If Bar Data is not present, AFD '0000' indicates that exact information
* is not available and the active image should be assumed to be the same as the coded frame. AFD '0000'.
* AFD '0000' accompanied by Bar Data signals that the active image’s aspect ratio is narrower than 16:9,
* but is not 4:3 or 14:9. As the exact aspect ratio cannot be conveyed by AFD alone, wherever possible,
* AFD ‘0000’ should be accompanied by Bar Data to define the exact vertical or horizontal extent
* of the active image.
* 2) AFD 0 is reserved for DVB/ETSI
* 3) values 1, 5, 6, 7, and 12 are reserved for both ATSC and DVB/ETSI
* 4) values 2 and 3 are not recommended for ATSC, but are valid for DVB/ETSI
*
* Since: 1.18
*/
typedef enum {
GST_VIDEO_AFD_UNAVAILABLE = 0,
GST_VIDEO_AFD_16_9_TOP_ALIGNED = 2,
GST_VIDEO_AFD_14_9_TOP_ALIGNED = 3,
GST_VIDEO_AFD_GREATER_THAN_16_9 = 4,
GST_VIDEO_AFD_4_3_FULL_16_9_FULL = 8,
GST_VIDEO_AFD_4_3_FULL_4_3_PILLAR = 9,
GST_VIDEO_AFD_16_9_LETTER_16_9_FULL = 10,
GST_VIDEO_AFD_14_9_LETTER_14_9_PILLAR = 11,
GST_VIDEO_AFD_4_3_FULL_14_9_CENTER = 13,
GST_VIDEO_AFD_16_9_LETTER_14_9_CENTER = 14,
GST_VIDEO_AFD_16_9_LETTER_4_3_CENTER = 15
} GstVideoAFDValue;
/**
* GstVideoAFDSpec:
* @GST_VIDEO_AFD_SPEC_DVB_ETSI: AFD value is from DVB/ETSI standard
* @GST_VIDEO_AFD_SPEC_ATSC_A53: AFD value is from ATSC A/53 standard
* @GST_VIDEO_AFD_SPEC_SMPT_ST2016_1 : AFD value is from SMPTE ST2016-1 standard
*
* Enumeration of the different standards that may apply to AFD data:
*
* 0) ETSI/DVB:
* https://www.etsi.org/deliver/etsi_ts/101100_101199/101154/02.01.01_60/ts_101154v020101p.pdf
*
* 1) ATSC A/53:
* https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
*
* 2) SMPTE ST2016-1:
*
* Since: 1.18
*/
typedef enum {
GST_VIDEO_AFD_SPEC_DVB_ETSI,
GST_VIDEO_AFD_SPEC_ATSC_A53,
GST_VIDEO_AFD_SPEC_SMPTE_ST2016_1
} GstVideoAFDSpec;
/**
* GstVideoAFDMeta:
* @meta: parent #GstMeta
* @field: 0 for progressive or field 1 and 1 for field 2
* @spec: #GstVideoAFDSpec that applies to @afd
* @afd: #GstVideoAFDValue AFD value
*
* Active Format Description (AFD)
*
* For details, see Table 6.14 Active Format in:
*
* ATSC Digital Television Standard:
* Part 4 – MPEG-2 Video System Characteristics
*
* https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
*
* and Active Format Description in Complete list of AFD codes
*
* https://en.wikipedia.org/wiki/Active_Format_Description#Complete_list_of_AFD_codes
*
* and SMPTE ST2016-1
*
* Since: 1.18
*/
typedef struct {
GstMeta meta;
guint8 field;
GstVideoAFDSpec spec;
GstVideoAFDValue afd;
} GstVideoAFDMeta;
GST_VIDEO_API GType gst_video_afd_meta_api_get_type (void);
#define GST_VIDEO_AFD_META_API_TYPE (gst_video_afd_meta_api_get_type())
GST_VIDEO_API const GstMetaInfo *gst_video_afd_meta_get_info (void);
#define GST_VIDEO_AFD_META_INFO (gst_video_afd_meta_get_info())
/**
* gst_buffer_get_video_afd_meta:
* @b: A #GstBuffer
*
* Gets the #GstVideoAFDMeta that might be present on @b.
*
* Note: there may be two #GstVideoAFDMeta structs for interlaced video.
*
* Since: 1.18
*
* Returns: (nullable): The first #GstVideoAFDMeta present on @b, or %NULL if
* no #GstVideoAFDMeta are present
*/
#define gst_buffer_get_video_afd_meta(b) \
((GstVideoAFDMeta*)gst_buffer_get_meta((b),GST_VIDEO_AFD_META_API_TYPE))
GST_VIDEO_API
GstVideoAFDMeta *gst_buffer_add_video_afd_meta (GstBuffer * buffer, guint8 field,
GstVideoAFDSpec spec,
GstVideoAFDValue afd);
/**
* GstVideoBarMeta:
* @meta: parent #GstMeta
* @field: 0 for progressive or field 1 and 1 for field 2
* @is_letterbox: if true then bar data specifies letterbox, otherwise pillarbox
* @bar_data1: If @is_letterbox is true, then the value specifies the
* last line of a horizontal letterbox bar area at top of reconstructed frame.
* Otherwise, it specifies the last horizontal luminance sample of a vertical pillarbox
* bar area at the left side of the reconstructed frame
* @bar_data2: If @is_letterbox is true, then the value specifies the
* first line of a horizontal letterbox bar area at bottom of reconstructed frame.
* Otherwise, it specifies the first horizontal
* luminance sample of a vertical pillarbox bar area at the right side of the reconstructed frame.
*
* Bar data should be included in video user data
* whenever the rectangular picture area containing useful information
* does not extend to the full height or width of the coded frame
* and AFD alone is insufficient to describe the extent of the image.
*
* Note: either vertical or horizontal bars are specified, but not both.
*
* For more details, see:
*
* https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
*
* and SMPTE ST2016-1
*
* Since: 1.18
*/
typedef struct {
GstMeta meta;
guint8 field;
gboolean is_letterbox;
guint bar_data1;
guint bar_data2;
} GstVideoBarMeta;
GST_VIDEO_API GType gst_video_bar_meta_api_get_type (void);
#define GST_VIDEO_BAR_META_API_TYPE (gst_video_bar_meta_api_get_type())
GST_VIDEO_API const GstMetaInfo *gst_video_bar_meta_get_info (void);
#define GST_VIDEO_BAR_META_INFO (gst_video_bar_meta_get_info())
/**
* gst_buffer_get_video_bar_meta:
* @b: A #GstBuffer
*
* Gets the #GstVideoBarMeta that might be present on @b.
*
* Since: 1.18
*
* Returns: (nullable): The first #GstVideoBarMeta present on @b, or %NULL if
* no #GstVideoBarMeta are present
*/
#define gst_buffer_get_video_bar_meta(b) \
((GstVideoBarMeta*)gst_buffer_get_meta((b),GST_VIDEO_BAR_META_API_TYPE))
GST_VIDEO_API
GstVideoBarMeta *gst_buffer_add_video_bar_meta (GstBuffer * buffer, guint8 field,
gboolean is_letterbox, guint bar_data1, guint bar_data2);
/* Closed Caption support */
/**
* GstVideoCaptionType:
* @GST_VIDEO_CAPTION_TYPE_UNKNOWN: Unknown type of CC
* @GST_VIDEO_CAPTION_TYPE_CEA608_RAW: CEA-608 as byte pairs. Note that
* this format is not recommended since is does not specify to
* which field the caption comes from and therefore assumes
* it comes from the first field (and that there is no information
* on the second field). Use @GST_VIDEO_CAPTION_TYPE_CEA708_RAW
* if you wish to store CEA-608 from two fields and prefix each byte pair
* with 0xFC for the first field and 0xFD for the second field.
* @GST_VIDEO_CAPTION_TYPE_CEA608_S334_1A: CEA-608 as byte triplets as defined
* in SMPTE S334-1 Annex A. The second and third byte of the byte triplet
* is the raw CEA608 data, the first byte is a bitfield: The top/7th bit is
* 0 for the second field, 1 for the first field, bit 6 and 5 are 0 and
* bits 4 to 0 are a 5 bit unsigned integer that represents the line
* offset relative to the base-line of the original image format (line 9
* for 525-line field 1, line 272 for 525-line field 2, line 5 for
* 625-line field 1 and line 318 for 625-line field 2).
* @GST_VIDEO_CAPTION_TYPE_CEA708_RAW: CEA-708 as cc_data byte triplets. They
* can also contain 608-in-708 and the first byte of each triplet has to
* be inspected for detecting the type.
* @GST_VIDEO_CAPTION_TYPE_CEA708_CDP: CEA-708 (and optionally CEA-608) in
* a CDP (Caption Distribution Packet) defined by SMPTE S-334-2.
* Contains the whole CDP (starting with 0x9669).
*
* The various known types of Closed Caption (CC).
*
* Since: 1.16
*/
typedef enum {
GST_VIDEO_CAPTION_TYPE_UNKNOWN = 0,
GST_VIDEO_CAPTION_TYPE_CEA608_RAW = 1,
GST_VIDEO_CAPTION_TYPE_CEA608_S334_1A = 2,
GST_VIDEO_CAPTION_TYPE_CEA708_RAW = 3,
GST_VIDEO_CAPTION_TYPE_CEA708_CDP = 4
} GstVideoCaptionType;
GST_VIDEO_API
GstVideoCaptionType
gst_video_caption_type_from_caps (const GstCaps *caps);
GST_VIDEO_API
GstCaps *
gst_video_caption_type_to_caps (GstVideoCaptionType type);
/**
* GstVideoCaptionMeta:
* @meta: parent #GstMeta
* @caption_type: The type of Closed Caption contained in the meta.
* @data: (array length=size): The Closed Caption data.
* @size: The size in bytes of @data
*
* Extra buffer metadata providing Closed Caption.
*
* Since: 1.16
*/
typedef struct {
GstMeta meta;
GstVideoCaptionType caption_type;
guint8 *data;
gsize size;
} GstVideoCaptionMeta;
GST_VIDEO_API
GType gst_video_caption_meta_api_get_type (void);
#define GST_VIDEO_CAPTION_META_API_TYPE (gst_video_caption_meta_api_get_type())
GST_VIDEO_API
const GstMetaInfo *gst_video_caption_meta_get_info (void);
#define GST_VIDEO_CAPTION_META_INFO (gst_video_caption_meta_get_info())
/**
* gst_buffer_get_video_caption_meta:
* @b: A #GstBuffer
*
* Gets the #GstVideoCaptionMeta that might be present on @b.
*
* Since: 1.16
*
* Returns: (nullable): The first #GstVideoCaptionMeta present on @b, or %NULL if
* no #GstVideoCaptionMeta are present
*/
#define gst_buffer_get_video_caption_meta(b) \
((GstVideoCaptionMeta*)gst_buffer_get_meta((b),GST_VIDEO_CAPTION_META_API_TYPE))
GST_VIDEO_API
GstVideoCaptionMeta *gst_buffer_add_video_caption_meta (GstBuffer * buffer,
GstVideoCaptionType caption_type,
const guint8 *data,
gsize size);
/**
* GstVideoVBIParser:
*
* A parser for detecting and extracting @GstVideoAncillary data from
* Vertical Blanking Interval lines of component signals.
*
* Since: 1.16
*/
typedef struct _GstVideoVBIParser GstVideoVBIParser;
GST_VIDEO_API
GType gst_video_vbi_parser_get_type (void);
/**
* GstVideoVBIParserResult:
* @GST_VIDEO_VBI_PARSER_RESULT_DONE: No line were provided, or no more Ancillary data was found.
* @GST_VIDEO_VBI_PARSER_RESULT_OK: A #GstVideoAncillary was found.
* @GST_VIDEO_VBI_PARSER_RESULT_ERROR: An error occurred
*
* Return values for #GstVideoVBIParser
*
* Since: 1.16
*/
typedef enum {
GST_VIDEO_VBI_PARSER_RESULT_DONE = 0,
GST_VIDEO_VBI_PARSER_RESULT_OK = 1,
GST_VIDEO_VBI_PARSER_RESULT_ERROR = 2
} GstVideoVBIParserResult;
GST_VIDEO_API
GstVideoVBIParserResult gst_video_vbi_parser_get_ancillary(GstVideoVBIParser *parser,
GstVideoAncillary *anc);
GST_VIDEO_API
GstVideoVBIParser *gst_video_vbi_parser_new (GstVideoFormat format, guint32 pixel_width);
GST_VIDEO_API
GstVideoVBIParser *gst_video_vbi_parser_copy (const GstVideoVBIParser *parser);
GST_VIDEO_API
void gst_video_vbi_parser_free (GstVideoVBIParser *parser);
GST_VIDEO_API
void gst_video_vbi_parser_add_line (GstVideoVBIParser *parser, const guint8 *data);
/**
* GstVideoVBIEncoder:
*
* An encoder for writing ancillary data to the
* Vertical Blanking Interval lines of component signals.
*
* Since: 1.16
*/
typedef struct _GstVideoVBIEncoder GstVideoVBIEncoder;
GST_VIDEO_API
GType gst_video_vbi_encoder_get_type (void);
GST_VIDEO_API
GstVideoVBIEncoder *gst_video_vbi_encoder_new (GstVideoFormat format, guint32 pixel_width);
GST_VIDEO_API
GstVideoVBIEncoder *gst_video_vbi_encoder_copy (const GstVideoVBIEncoder *encoder);
GST_VIDEO_API
void gst_video_vbi_encoder_free (GstVideoVBIEncoder *encoder);
GST_VIDEO_API
gboolean gst_video_vbi_encoder_add_ancillary (GstVideoVBIEncoder *encoder,
gboolean composite,
guint8 DID,
guint8 SDID_block_number,
const guint8 *data,
guint data_count);
GST_VIDEO_API
void gst_video_vbi_encoder_write_line (GstVideoVBIEncoder *encoder, guint8 *data);
G_END_DECLS
#endif /* __GST_VIDEO_ANC_H__ */
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