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h264_sei.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
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11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
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15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVCODEC_H264_SEI_H
20 #define AVCODEC_H264_SEI_H
21 
22 #include "get_bits.h"
23 
24 /**
25  * SEI message types
26  */
27 typedef enum {
28  SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
29  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
30  SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
31  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
32  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
33  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
34  SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
35  SEI_TYPE_GREEN_METADATA = 56 ///< GreenMPEG information
36 } SEI_Type;
37 
38 /**
39  * pic_struct in picture timing SEI message
40  */
41 typedef enum {
42  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
43  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
44  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
45  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
46  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
47  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
48  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
49  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
50  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
52 
53 /**
54  * frame_packing_arrangement types
55  */
56 typedef enum {
64 } SEI_FpaType;
65 
66 typedef struct H264SEIPictureTiming {
68 
69  /**
70  * Bit set of clock types for fields/frames in picture timing SEI message.
71  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
72  * interlaced).
73  */
74  int ct_type;
75 
76  /**
77  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
78  */
80 
81  /**
82  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
83  */
86 
87 typedef struct H264SEIAFD {
88  int present;
90 } H264SEIAFD;
91 
92 typedef struct H264SEIA53Caption {
96 
97 typedef struct H264SEIUnregistered {
100 
101 typedef struct H264SEIRecoveryPoint {
102  /**
103  * recovery_frame_cnt
104  *
105  * Set to -1 if no recovery point SEI message found or to number of frames
106  * before playback synchronizes. Frames having recovery point are key
107  * frames.
108  */
111 
112 typedef struct H264SEIBufferingPeriod {
113  int present; ///< Buffering period SEI flag
114  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
116 
117 typedef struct H264SEIFramePacking {
118  int present;
120  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
126 
128  int present;
130  int hflip, vflip;
132 
133 typedef struct H264SEIGreenMetaData {
136  uint16_t num_seconds;
137  uint16_t num_pictures;
145 
146 typedef struct H264SEIContext {
157 
158 struct H264ParamSets;
159 
161  const struct H264ParamSets *ps, void *logctx);
162 
163 /**
164  * Reset SEI values at the beginning of the frame.
165  */
167 
168 /**
169  * Get stereo_mode string from the h264 frame_packing_arrangement
170  */
171 const char *ff_h264_sei_stereo_mode(const H264SEIFramePacking *h);
172 
173 #endif /* AVCODEC_H264_SEI_H */
int recovery_frame_cnt
recovery_frame_cnt
Definition: h264_sei.h:109
uint16_t num_pictures
Definition: h264_sei.h:137
const char * ff_h264_sei_stereo_mode(const H264SEIFramePacking *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:454
SEI_Type
SEI message types.
Definition: h264_sei.h:27
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264_sei.h:120
GreenMPEG information.
Definition: h264_sei.h:35
picture timing
Definition: h264_sei.h:29
display orientation
Definition: h264_sei.h:34
3: top field, bottom field, in that order
Definition: h264_sei.h:45
H264SEIDisplayOrientation display_orientation
Definition: h264_sei.h:154
8: frame tripling
Definition: h264_sei.h:50
int frame_packing_arrangement_repetition_period
Definition: h264_sei.h:122
H264SEIGreenMetaData green_metadata
Definition: h264_sei.h:155
uint8_t
uint8_t green_metadata_type
Definition: h264_sei.h:134
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264_sei.h:41
bitstream reader API header.
H264SEIAFD afd
Definition: h264_sei.h:148
7: frame doubling
Definition: h264_sei.h:49
uint16_t num_seconds
Definition: h264_sei.h:136
uint8_t percent_six_tap_filtering
Definition: h264_sei.h:140
SEI_FpaType frame_packing_arrangement_type
Definition: h264_sei.h:121
int frame_packing_arrangement_id
Definition: h264_sei.h:119
int a53_caption_size
Definition: h264_sei.h:93
void ff_h264_sei_uninit(H264SEIContext *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:41
int present
Buffering period SEI flag.
Definition: h264_sei.h:113
registered user data as specified by Rec. ITU-T T.35
Definition: h264_sei.h:30
H264SEIUnregistered unregistered
Definition: h264_sei.h:150
uint8_t active_format_description
Definition: h264_sei.h:89
uint8_t percent_non_zero_macroblocks
Definition: h264_sei.h:138
recovery point (frame # to decoder sync)
Definition: h264_sei.h:32
int ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264_sei.h:74
SEI_FpaType
frame_packing_arrangement types
Definition: h264_sei.h:56
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264_sei.h:114
buffering period (H.264, D.1.1)
Definition: h264_sei.h:28
int cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264_sei.h:84
uint8_t * a53_caption
Definition: h264_sei.h:94
int quincunx_sampling_flag
Definition: h264_sei.h:124
2: bottom field
Definition: h264_sei.h:44
SEI_PicStructType pic_struct
Definition: h264_sei.h:67
H264SEIA53Caption a53_caption
Definition: h264_sei.h:149
5: top field, bottom field, top field repeated, in that order
Definition: h264_sei.h:47
int content_interpretation_type
Definition: h264_sei.h:123
H264SEIBufferingPeriod buffering_period
Definition: h264_sei.h:152
uint8_t percent_intra_coded_macroblocks
Definition: h264_sei.h:139
H264SEIPictureTiming picture_timing
Definition: h264_sei.h:147
H264SEIRecoveryPoint recovery_point
Definition: h264_sei.h:151
uint8_t xsd_metric_type
Definition: h264_sei.h:142
int ff_h264_sei_decode(H264SEIContext *h, GetBitContext *gb, const struct H264ParamSets *ps, void *logctx)
uint16_t xsd_metric_value
Definition: h264_sei.h:143
int dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264_sei.h:79
H264SEIFramePacking frame_packing
Definition: h264_sei.h:153
unregistered user data
Definition: h264_sei.h:31
int present
Definition: h264_sei.h:88
4: bottom field, top field, in that order
Definition: h264_sei.h:46
frame packing arrangement
Definition: h264_sei.h:33
1: top field
Definition: h264_sei.h:43
6: bottom field, top field, bottom field repeated, in that order
Definition: h264_sei.h:48
uint8_t percent_alpha_point_deblocking_instance
Definition: h264_sei.h:141