mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-21 07:46:38 +00:00
77937f9398
The function does not free the structure but the data contained within. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>
206 lines
6.1 KiB
C
206 lines
6.1 KiB
C
/* GStreamer
|
||
* Copyright (C) <2019> Aaron Boxer <aaron.boxer@collabora.com>
|
||
* Copyright (C) <2019> Collabora Ltd.
|
||
*
|
||
* 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 __VIDEO_PARSE_UTILS_H__
|
||
#define __VIDEO_PARSE_UTILS_H__
|
||
|
||
#include <gst/gst.h>
|
||
#include <gst/base/gstbaseparse.h>
|
||
#include <gst/base/gstbytereader.h>
|
||
#include <gst/video/video-anc.h>
|
||
|
||
#define GST_VIDEO_BAR_MAX_BYTES 9
|
||
|
||
/* A53-4 Table 6.7 */
|
||
#define A53_USER_DATA_ID_GA94 0x47413934
|
||
#define A53_USER_DATA_ID_DTG1 0x44544731
|
||
|
||
/* custom id for SCTE 20 608 */
|
||
#define USER_DATA_ID_SCTE_20_CC 0xFFFFFFFE
|
||
/* custom id for DirecTV */
|
||
#define USER_DATA_ID_DIRECTV_CC 0xFFFFFFFF
|
||
|
||
/* A53-4 Table 6.9 */
|
||
#define A53_USER_DATA_TYPE_CODE_CC_DATA 0x03
|
||
#define A53_USER_DATA_TYPE_CODE_BAR_DATA 0x06
|
||
/* ANSI/SCTE 21 Additional EIA 608 Data
|
||
* https://www.scte.org/documents/pdf/Standards/ANSISCTE212001R2006.pdf*/
|
||
#define A53_USER_DATA_TYPE_CODE_SCTE_21_EIA_608_CC_DATA 0x04
|
||
|
||
/* CEA-708 Table 2 */
|
||
#define CEA_708_PROCESS_CC_DATA_FLAG 0x40
|
||
#define CEA_708_PROCESS_EM_DATA_FLAG 0x80
|
||
|
||
/* country codes */
|
||
#define ITU_T_T35_COUNTRY_CODE_US 0xB5
|
||
|
||
/* provider codes */
|
||
#define ITU_T_T35_MANUFACTURER_US_ATSC 0x31
|
||
#define ITU_T_T35_MANUFACTURER_US_DIRECTV 0x2F
|
||
|
||
/*
|
||
* GstVideoAFDAspectRatio:
|
||
* @GST_VIDEO_AFD_ASPECT_RATIO_UNDEFINED: aspect ratio is undefined
|
||
* @GST_VIDEO_AFD_ASPECT_RATIO_4_3: 4:3 aspect ratio
|
||
* @GST_VIDEO_AFD_ASPECT_RATIO_16_9: 16:9 aspect ratio
|
||
*
|
||
* Enumeration of the different AFD aspect ratios (SMPTE ST2016-1 only)
|
||
*/
|
||
typedef enum {
|
||
GST_VIDEO_AFD_ASPECT_RATIO_UNDEFINED,
|
||
GST_VIDEO_AFD_ASPECT_RATIO_4_3,
|
||
GST_VIDEO_AFD_ASPECT_RATIO_16_9
|
||
} GstVideoAFDAspectRatio;
|
||
|
||
/*
|
||
* GstVideoParseUtilsField:
|
||
* @GST_VIDEO_PARSE_UTILS_FIELD_1 progressive or field 1
|
||
* @GST_VIDEO_PARSE_UTILS_FIELD_2 field 2
|
||
*
|
||
* Enumeration of fields
|
||
*/
|
||
typedef enum {
|
||
GST_VIDEO_PARSE_UTILS_FIELD_1,
|
||
GST_VIDEO_PARSE_UTILS_FIELD_2
|
||
} GstVideoParseUtilsField;
|
||
|
||
/*
|
||
* GstVideoAFD:
|
||
* @field: #GstVideoParseUtilsField for @afd
|
||
* @aspect_ratio: #GstVideoAFDAspectRatio for frame
|
||
* @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
|
||
*/
|
||
typedef struct {
|
||
GstVideoParseUtilsField field;
|
||
GstVideoAFDAspectRatio aspect_ratio;
|
||
GstVideoAFDSpec spec;
|
||
GstVideoAFDValue afd;
|
||
} GstVideoAFD;
|
||
|
||
/*
|
||
* GstVideoBarData:
|
||
* @field: GstVideoParseUtilsField for bar data
|
||
* @is_letterbox: if true then bar data specifies letterbox, otherwise pillarbox
|
||
* @bar_data: An array of size 2. if @is_letterbox is true, then two values specify
|
||
* last line of a horizontal letterbox bar area at top of reconstructed frame
|
||
* and first line of a horizontal letterbox bar area at bottom of reconstructed frame
|
||
* otherwise, two values specify
|
||
* last horizontal luminance sample of a vertical pillarbox bar area at the left side
|
||
* of the reconstructed frame, and 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
|
||
*/
|
||
typedef struct {
|
||
GstVideoParseUtilsField field;
|
||
gboolean is_letterbox;
|
||
guint bar_data[2];
|
||
} GstVideoBarData;
|
||
|
||
/*
|
||
* GstVideoParseUserData
|
||
*
|
||
* Holds unparsed and parsed user data for closed captions, AFD and Bar data.
|
||
*/
|
||
typedef struct
|
||
{
|
||
GstVideoParseUtilsField field;
|
||
|
||
/* pending closed captions */
|
||
guint8 closedcaptions[96];
|
||
guint closedcaptions_size;
|
||
GstVideoCaptionType closedcaptions_type;
|
||
|
||
/* pending bar data */
|
||
guint8 bar_data[GST_VIDEO_BAR_MAX_BYTES];
|
||
guint bar_data_size;
|
||
gboolean has_bar_data;
|
||
|
||
/* parsed bar data */
|
||
GstVideoBarData bar_parsed;
|
||
|
||
/* pending AFD data */
|
||
guint8 afd;
|
||
gboolean active_format_flag;
|
||
GstVideoAFDSpec afd_spec;
|
||
gboolean has_afd;
|
||
|
||
/* parsed afd data */
|
||
GstVideoAFD afd_parsed;
|
||
|
||
} GstVideoParseUserData;
|
||
|
||
/*
|
||
* GstVideoParseUserDataUnregistered
|
||
*
|
||
* Holds unparsed User Data Unregistered.
|
||
*/
|
||
typedef struct
|
||
{
|
||
guint8 uuid[16];
|
||
guint8 *data;
|
||
gsize size;
|
||
} GstVideoParseUserDataUnregistered;
|
||
|
||
G_BEGIN_DECLS
|
||
|
||
void gst_video_parse_user_data(GstElement * elt, GstVideoParseUserData * user_data,
|
||
GstByteReader * br, guint8 field, guint16 provider_code);
|
||
|
||
void gst_video_parse_user_data_unregistered(GstElement * elt, GstVideoParseUserDataUnregistered * user_data,
|
||
GstByteReader * br, guint8 uuid[16]);
|
||
|
||
void gst_video_user_data_unregistered_clear(GstVideoParseUserDataUnregistered * user_data);
|
||
|
||
void gst_video_push_user_data(GstElement * elt, GstVideoParseUserData * user_data,
|
||
GstBuffer * buf);
|
||
|
||
void gst_video_push_user_data_unregistered(GstElement * elt, GstVideoParseUserDataUnregistered * user_data,
|
||
GstBuffer * buf);
|
||
|
||
G_END_DECLS
|
||
#endif /* __VIDEO_PARSE_UTILS_H__ */
|