FFmpeg  4.0
h264_sei.h
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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  H264_SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
29  H264_SEI_TYPE_PIC_TIMING = 1, ///< picture timing
30  H264_SEI_TYPE_FILLER_PAYLOAD = 3, ///< filler data
31  H264_SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
32  H264_SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
33  H264_SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
34  H264_SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
35  H264_SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
36  H264_SEI_TYPE_GREEN_METADATA = 56, ///< GreenMPEG information
37  H264_SEI_TYPE_ALTERNATIVE_TRANSFER = 147, ///< alternative transfer
39 
40 /**
41  * pic_struct in picture timing SEI message
42  */
43 typedef enum {
44  H264_SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
45  H264_SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
46  H264_SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
47  H264_SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
48  H264_SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
49  H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
50  H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
51  H264_SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
52  H264_SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
54 
55 /**
56  * frame_packing_arrangement types
57  */
58 typedef enum {
67 
68 typedef struct H264SEIPictureTiming {
69  int present;
71 
72  /**
73  * Bit set of clock types for fields/frames in picture timing SEI message.
74  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
75  * interlaced).
76  */
77  int ct_type;
78 
79  /**
80  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
81  */
83 
84  /**
85  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
86  */
89 
90 typedef struct H264SEIAFD {
91  int present;
93 } H264SEIAFD;
94 
95 typedef struct H264SEIA53Caption {
99 
100 typedef struct H264SEIUnregistered {
103 
104 typedef struct H264SEIRecoveryPoint {
105  /**
106  * recovery_frame_cnt
107  *
108  * Set to -1 if no recovery point SEI message found or to number of frames
109  * before playback synchronizes. Frames having recovery point are key
110  * frames.
111  */
114 
115 typedef struct H264SEIBufferingPeriod {
116  int present; ///< Buffering period SEI flag
117  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
119 
120 typedef struct H264SEIFramePacking {
121  int present;
123  int arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
130 
132  int present;
134  int hflip, vflip;
136 
137 typedef struct H264SEIGreenMetaData {
140  uint16_t num_seconds;
141  uint16_t num_pictures;
149 
151  int present;
154 
155 typedef struct H264SEIContext {
167 
168 struct H264ParamSets;
169 
171  const struct H264ParamSets *ps, void *logctx);
172 
173 /**
174  * Reset SEI values at the beginning of the frame.
175  */
177 
178 /**
179  * Get stereo_mode string from the h264 frame_packing_arrangement
180  */
181 const char *ff_h264_sei_stereo_mode(const H264SEIFramePacking *h);
182 
183 #endif /* AVCODEC_H264_SEI_H */
int recovery_frame_cnt
recovery_frame_cnt
Definition: h264_sei.h:112
H264_SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264_sei.h:43
uint16_t num_pictures
Definition: h264_sei.h:141
const char * ff_h264_sei_stereo_mode(const H264SEIFramePacking *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:466
H264SEIAlternativeTransfer alternative_transfer
Definition: h264_sei.h:165
H264SEIDisplayOrientation display_orientation
Definition: h264_sei.h:163
int current_frame_is_frame0_flag
Definition: h264_sei.h:128
H264SEIGreenMetaData green_metadata
Definition: h264_sei.h:164
H264_SEI_FpaType
frame_packing_arrangement types
Definition: h264_sei.h:58
4: bottom field, top field, in that order
Definition: h264_sei.h:48
uint8_t
uint8_t green_metadata_type
Definition: h264_sei.h:138
unregistered user data
Definition: h264_sei.h:32
display orientation
Definition: h264_sei.h:35
bitstream reader API header.
H264SEIAFD afd
Definition: h264_sei.h:157
alternative transfer
Definition: h264_sei.h:37
uint16_t num_seconds
Definition: h264_sei.h:140
uint8_t percent_six_tap_filtering
Definition: h264_sei.h:144
int a53_caption_size
Definition: h264_sei.h:96
void ff_h264_sei_uninit(H264SEIContext *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:41
buffering period (H.264, D.1.1)
Definition: h264_sei.h:28
H264_SEI_FpaType arrangement_type
Definition: h264_sei.h:124
int present
Buffering period SEI flag.
Definition: h264_sei.h:116
int arrangement_repetition_period
Definition: h264_sei.h:125
H264SEIUnregistered unregistered
Definition: h264_sei.h:159
uint8_t active_format_description
Definition: h264_sei.h:92
uint8_t percent_non_zero_macroblocks
Definition: h264_sei.h:142
H264_SEI_PicStructType pic_struct
Definition: h264_sei.h:70
int ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264_sei.h:77
picture timing
Definition: h264_sei.h:29
int cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264_sei.h:87
uint8_t * a53_caption
Definition: h264_sei.h:97
H264_SEI_Type
SEI message types.
Definition: h264_sei.h:27
int quincunx_sampling_flag
Definition: h264_sei.h:127
5: top field, bottom field, top field repeated, in that order
Definition: h264_sei.h:49
GreenMPEG information.
Definition: h264_sei.h:36
H264SEIA53Caption a53_caption
Definition: h264_sei.h:158
int content_interpretation_type
Definition: h264_sei.h:126
H264SEIBufferingPeriod buffering_period
Definition: h264_sei.h:161
recovery point (frame # to decoder sync)
Definition: h264_sei.h:33
uint8_t percent_intra_coded_macroblocks
Definition: h264_sei.h:143
registered user data as specified by Rec. ITU-T T.35
Definition: h264_sei.h:31
H264SEIPictureTiming picture_timing
Definition: h264_sei.h:156
H264SEIRecoveryPoint recovery_point
Definition: h264_sei.h:160
3: top field, bottom field, in that order
Definition: h264_sei.h:47
uint8_t xsd_metric_type
Definition: h264_sei.h:146
int ff_h264_sei_decode(H264SEIContext *h, GetBitContext *gb, const struct H264ParamSets *ps, void *logctx)
uint16_t xsd_metric_value
Definition: h264_sei.h:147
int dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264_sei.h:82
H264SEIFramePacking frame_packing
Definition: h264_sei.h:162
int present
Definition: h264_sei.h:91
int arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264_sei.h:123
6: bottom field, top field, bottom field repeated, in that order
Definition: h264_sei.h:50
frame packing arrangement
Definition: h264_sei.h:34
uint8_t percent_alpha_point_deblocking_instance
Definition: h264_sei.h:145