| Line | Branch | Exec | Source |
|---|---|---|---|
| 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, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 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 | #include "h2645_sei.h" | ||
| 24 | #include "h264_ps.h" | ||
| 25 | #include "sei.h" | ||
| 26 | |||
| 27 | |||
| 28 | /** | ||
| 29 | * pic_struct in picture timing SEI message | ||
| 30 | */ | ||
| 31 | typedef enum { | ||
| 32 | H264_SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame | ||
| 33 | H264_SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field | ||
| 34 | H264_SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field | ||
| 35 | H264_SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order | ||
| 36 | H264_SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order | ||
| 37 | H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order | ||
| 38 | H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order | ||
| 39 | H264_SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling | ||
| 40 | H264_SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling | ||
| 41 | } H264_SEI_PicStructType; | ||
| 42 | |||
| 43 | typedef struct H264SEITimeCode { | ||
| 44 | /* When not continuously receiving full timecodes, we have to reference | ||
| 45 | the previous timecode received */ | ||
| 46 | int full; | ||
| 47 | int frame; | ||
| 48 | int seconds; | ||
| 49 | int minutes; | ||
| 50 | int hours; | ||
| 51 | int dropframe; | ||
| 52 | } H264SEITimeCode; | ||
| 53 | |||
| 54 | typedef struct H264SEIPictureTiming { | ||
| 55 | // maximum size of pic_timing according to the spec should be 274 bits | ||
| 56 | uint8_t payload[40]; | ||
| 57 | int payload_size_bytes; | ||
| 58 | |||
| 59 | int present; | ||
| 60 | H264_SEI_PicStructType pic_struct; | ||
| 61 | |||
| 62 | /** | ||
| 63 | * Bit set of clock types for fields/frames in picture timing SEI message. | ||
| 64 | * For each found ct_type, appropriate bit is set (e.g., bit 1 for | ||
| 65 | * interlaced). | ||
| 66 | */ | ||
| 67 | int ct_type; | ||
| 68 | |||
| 69 | /** | ||
| 70 | * dpb_output_delay in picture timing SEI message, see H.264 C.2.2 | ||
| 71 | */ | ||
| 72 | int dpb_output_delay; | ||
| 73 | |||
| 74 | /** | ||
| 75 | * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2 | ||
| 76 | */ | ||
| 77 | int cpb_removal_delay; | ||
| 78 | |||
| 79 | /** | ||
| 80 | * Maximum three timecodes in a pic_timing SEI. | ||
| 81 | */ | ||
| 82 | H264SEITimeCode timecode[3]; | ||
| 83 | |||
| 84 | /** | ||
| 85 | * Number of timecode in use | ||
| 86 | */ | ||
| 87 | int timecode_cnt; | ||
| 88 | } H264SEIPictureTiming; | ||
| 89 | |||
| 90 | typedef struct H264SEIRecoveryPoint { | ||
| 91 | /** | ||
| 92 | * recovery_frame_cnt | ||
| 93 | * | ||
| 94 | * Set to -1 if no recovery point SEI message found or to number of frames | ||
| 95 | * before playback synchronizes. Frames having recovery point are key | ||
| 96 | * frames. | ||
| 97 | */ | ||
| 98 | int recovery_frame_cnt; | ||
| 99 | } H264SEIRecoveryPoint; | ||
| 100 | |||
| 101 | typedef struct H264SEIBufferingPeriod { | ||
| 102 | int present; ///< Buffering period SEI flag | ||
| 103 | int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs | ||
| 104 | } H264SEIBufferingPeriod; | ||
| 105 | |||
| 106 | typedef struct H264SEIGreenMetaData { | ||
| 107 | uint8_t green_metadata_type; | ||
| 108 | uint8_t period_type; | ||
| 109 | uint16_t num_seconds; | ||
| 110 | uint16_t num_pictures; | ||
| 111 | uint8_t percent_non_zero_macroblocks; | ||
| 112 | uint8_t percent_intra_coded_macroblocks; | ||
| 113 | uint8_t percent_six_tap_filtering; | ||
| 114 | uint8_t percent_alpha_point_deblocking_instance; | ||
| 115 | uint8_t xsd_metric_type; | ||
| 116 | uint16_t xsd_metric_value; | ||
| 117 | } H264SEIGreenMetaData; | ||
| 118 | |||
| 119 | typedef struct H264SEIContext { | ||
| 120 | H2645SEI common; | ||
| 121 | H264SEIPictureTiming picture_timing; | ||
| 122 | H264SEIRecoveryPoint recovery_point; | ||
| 123 | H264SEIBufferingPeriod buffering_period; | ||
| 124 | H264SEIGreenMetaData green_metadata; | ||
| 125 | } H264SEIContext; | ||
| 126 | |||
| 127 | struct H264ParamSets; | ||
| 128 | |||
| 129 | int ff_h264_sei_decode(H264SEIContext *h, GetBitContext *gb, | ||
| 130 | const struct H264ParamSets *ps, void *logctx); | ||
| 131 | |||
| 132 | 62 | static inline int ff_h264_sei_ctx_replace(H264SEIContext *dst, | |
| 133 | const H264SEIContext *src) | ||
| 134 | { | ||
| 135 | 62 | return ff_h2645_sei_ctx_replace(&dst->common, &src->common); | |
| 136 | } | ||
| 137 | |||
| 138 | /** | ||
| 139 | * Reset SEI values at the beginning of the frame. | ||
| 140 | */ | ||
| 141 | void ff_h264_sei_uninit(H264SEIContext *h); | ||
| 142 | |||
| 143 | /** | ||
| 144 | * Get stereo_mode string from the h264 frame_packing_arrangement | ||
| 145 | */ | ||
| 146 | const char *ff_h264_sei_stereo_mode(const H2645SEIFramePacking *h); | ||
| 147 | |||
| 148 | /** | ||
| 149 | * Parse the contents of a picture timing message given an active SPS. | ||
| 150 | */ | ||
| 151 | int ff_h264_sei_process_picture_timing(H264SEIPictureTiming *h, const SPS *sps, | ||
| 152 | void *logctx); | ||
| 153 | |||
| 154 | #endif /* AVCODEC_H264_SEI_H */ | ||
| 155 |