/* GStreamer * Copyright (C) <2018> Edward Hervey * * 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 #include #include 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__ */