Head

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/hevc_sei.c	Lines:	101	200	50.5 %
Date:	2019-11-18 18:00:01	Branches:	49	100	49.0 %


/*
 * HEVC Supplementary Enhancement Information messages
 *
 * Copyright (C) 2012 - 2013 Guillaume Martres
 * Copyright (C) 2012 - 2013 Gildas Cocherel
 * Copyright (C) 2013 Vittorio Giovara
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "golomb.h"
#include "hevc_ps.h"
#include "hevc_sei.h"

static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb)
{
    int cIdx, i;
    uint8_t hash_type;
    //uint16_t picture_crc;
    //uint32_t picture_checksum;
    hash_type = get_bits(gb, 8);

    for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) {
        if (hash_type == 0) {
            s->is_md5 = 1;
            for (i = 0; i < 16; i++)
                s->md5[cIdx][i] = get_bits(gb, 8);
        } else if (hash_type == 1) {
            // picture_crc = get_bits(gb, 16);
            skip_bits(gb, 16);
        } else if (hash_type == 2) {
            // picture_checksum = get_bits_long(gb, 32);
            skip_bits(gb, 32);
        }
    }
    return 0;
}

static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay *s, GetBitContext *gb)
{
    int i;
    // Mastering primaries
    for (i = 0; i < 3; i++) {
        s->display_primaries[i][0] = get_bits(gb, 16);
        s->display_primaries[i][1] = get_bits(gb, 16);
    }
    // White point (x, y)
    s->white_point[0] = get_bits(gb, 16);
    s->white_point[1] = get_bits(gb, 16);

    // Max and min luminance of mastering display
    s->max_luminance = get_bits_long(gb, 32);
    s->min_luminance = get_bits_long(gb, 32);

    // As this SEI message comes before the first frame that references it,
    // initialize the flag to 2 and decrement on IRAP access unit so it
    // persists for the coded video sequence (e.g., between two IRAPs)
    s->present = 2;
    return 0;
}

static int decode_nal_sei_content_light_info(HEVCSEIContentLight *s, GetBitContext *gb)
{
    // Max and average light levels
    s->max_content_light_level     = get_bits_long(gb, 16);
    s->max_pic_average_light_level = get_bits_long(gb, 16);
    // As this SEI message comes before the first frame that references it,
    // initialize the flag to 2 and decrement on IRAP access unit so it
    // persists for the coded video sequence (e.g., between two IRAPs)
    s->present = 2;
    return  0;
}

static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking *s, GetBitContext *gb)
{
    get_ue_golomb_long(gb);             // frame_packing_arrangement_id
    s->present = !get_bits1(gb);

    if (s->present) {
        s->arrangement_type               = get_bits(gb, 7);
        s->quincunx_subsampling           = get_bits1(gb);
        s->content_interpretation_type    = get_bits(gb, 6);

        // spatial_flipping_flag, frame0_flipped_flag, field_views_flag
        skip_bits(gb, 3);
        s->current_frame_is_frame0_flag = get_bits1(gb);
        // frame0_self_contained_flag, frame1_self_contained_flag
        skip_bits(gb, 2);

        if (!s->quincunx_subsampling && s->arrangement_type != 5)
            skip_bits(gb, 16);  // frame[01]_grid_position_[xy]
        skip_bits(gb, 8);       // frame_packing_arrangement_reserved_byte
        skip_bits1(gb);         // frame_packing_arrangement_persistence_flag
    }
    skip_bits1(gb);             // upsampled_aspect_ratio_flag
    return 0;
}

static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation *s, GetBitContext *gb)
{
    s->present = !get_bits1(gb);

    if (s->present) {
        s->hflip = get_bits1(gb);     // hor_flip
        s->vflip = get_bits1(gb);     // ver_flip

        s->anticlockwise_rotation = get_bits(gb, 16);
        skip_bits1(gb);     // display_orientation_persistence_flag
    }

    return 0;
}

static int decode_nal_sei_pic_timing(HEVCSEI *s, GetBitContext *gb, const HEVCParamSets *ps,
                                     void *logctx, int size)
{
    HEVCSEIPictureTiming *h = &s->picture_timing;
    HEVCSPS *sps;

    if (!ps->sps_list[s->active_seq_parameter_set_id])
        return(AVERROR(ENOMEM));
    sps = (HEVCSPS*)ps->sps_list[s->active_seq_parameter_set_id]->data;

    if (sps->vui.frame_field_info_present_flag) {
        int pic_struct = get_bits(gb, 4);
        h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
        if (pic_struct == 2 || pic_struct == 10 || pic_struct == 12) {
            av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n");
            h->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
        } else if (pic_struct == 1 || pic_struct == 9 || pic_struct == 11) {
            av_log(logctx, AV_LOG_DEBUG, "TOP Field\n");
            h->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
        }
        get_bits(gb, 2);                   // source_scan_type
        get_bits(gb, 1);                   // duplicate_flag
        skip_bits1(gb);
        size--;
    }
    skip_bits_long(gb, 8 * size);

    return 0;
}

static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption *s, GetBitContext *gb,
                                                      int size)
{
    int flag;
    int user_data_type_code;
    int cc_count;

    if (size < 3)
       return AVERROR(EINVAL);

    user_data_type_code = get_bits(gb, 8);
    if (user_data_type_code == 0x3) {
        skip_bits(gb, 1); // reserved

        flag = get_bits(gb, 1); // process_cc_data_flag
        if (flag) {
            skip_bits(gb, 1);
            cc_count = get_bits(gb, 5);
            skip_bits(gb, 8); // reserved
            size -= 2;

            if (cc_count && size >= cc_count * 3) {
                const uint64_t new_size = (s->a53_caption_size + cc_count
                                           * UINT64_C(3));
                int i, ret;

                if (new_size > INT_MAX)
                    return AVERROR(EINVAL);

                /* Allow merging of the cc data from two fields. */
                ret = av_reallocp(&s->a53_caption, new_size);
                if (ret < 0)
                    return ret;

                for (i = 0; i < cc_count; i++) {
                    s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
                    s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
                    s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
                }
                skip_bits(gb, 8); // marker_bits
            }
        }
    } else {
        int i;
        for (i = 0; i < size - 1; i++)
            skip_bits(gb, 8);
    }

    return 0;
}

static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s, GetBitContext *gb,
                                                         int size)
{
    uint32_t country_code;
    uint32_t user_identifier;

    if (size < 7)
        return AVERROR(EINVAL);
    size -= 7;

    country_code = get_bits(gb, 8);
    if (country_code == 0xFF) {
        skip_bits(gb, 8);
        size--;
    }

    skip_bits(gb, 8);
    skip_bits(gb, 8);

    user_identifier = get_bits_long(gb, 32);

    switch (user_identifier) {
        case MKBETAG('G', 'A', '9', '4'):
            return decode_registered_user_data_closed_caption(&s->a53_caption, gb, size);
        default:
            skip_bits_long(gb, size * 8);
            break;
    }
    return 0;
}

static int decode_nal_sei_active_parameter_sets(HEVCSEI *s, GetBitContext *gb, void *logctx)
{
    int num_sps_ids_minus1;
    int i;
    unsigned active_seq_parameter_set_id;

    get_bits(gb, 4); // active_video_parameter_set_id
    get_bits(gb, 1); // self_contained_cvs_flag
    get_bits(gb, 1); // num_sps_ids_minus1
    num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1

    if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
        av_log(logctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
        return AVERROR_INVALIDDATA;
    }

    active_seq_parameter_set_id = get_ue_golomb_long(gb);
    if (active_seq_parameter_set_id >= HEVC_MAX_SPS_COUNT) {
        av_log(logctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
        return AVERROR_INVALIDDATA;
    }
    s->active_seq_parameter_set_id = active_seq_parameter_set_id;

    for (i = 1; i <= num_sps_ids_minus1; i++)
        get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]

    return 0;
}

static int decode_nal_sei_alternative_transfer(HEVCSEIAlternativeTransfer *s, GetBitContext *gb)
{
    s->present = 1;
    s->preferred_transfer_characteristics = get_bits(gb, 8);
    return 0;
}

static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s,
                                 const HEVCParamSets *ps, int type, int size)
{
    switch (type) {
    case 256:  // Mismatched value from HM 8.1
        return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
    case HEVC_SEI_TYPE_FRAME_PACKING:
        return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb);
    case HEVC_SEI_TYPE_DISPLAY_ORIENTATION:
        return decode_nal_sei_display_orientation(&s->display_orientation, gb);
    case HEVC_SEI_TYPE_PICTURE_TIMING:
        return decode_nal_sei_pic_timing(s, gb, ps, logctx, size);
    case HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO:
        return decode_nal_sei_mastering_display_info(&s->mastering_display, gb);
    case HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
        return decode_nal_sei_content_light_info(&s->content_light, gb);
    case HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS:
        return decode_nal_sei_active_parameter_sets(s, gb, logctx);
    case HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
        return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, size);
    case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
        return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb);
    default:
        av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
        skip_bits_long(gb, 8 * size);
        return 0;
    }
}

static int decode_nal_sei_suffix(GetBitContext *gb, void *logctx, HEVCSEI *s,
                                 int type, int size)
{
    switch (type) {
    case HEVC_SEI_TYPE_DECODED_PICTURE_HASH:
        return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
    default:
        av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
        skip_bits_long(gb, 8 * size);
        return 0;
    }
}

static int decode_nal_sei_message(GetBitContext *gb, void *logctx, HEVCSEI *s,
                                  const HEVCParamSets *ps, int nal_unit_type)
{
    int payload_type = 0;
    int payload_size = 0;
    int byte = 0xFF;
    av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n");

    while (byte == 0xFF) {
        if (get_bits_left(gb) < 16 || payload_type > INT_MAX - 255)
            return AVERROR_INVALIDDATA;
        byte          = get_bits(gb, 8);
        payload_type += byte;
    }
    byte = 0xFF;
    while (byte == 0xFF) {
        if (get_bits_left(gb) < 8 + 8LL*payload_size)
            return AVERROR_INVALIDDATA;
        byte          = get_bits(gb, 8);
        payload_size += byte;
    }
    if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
        return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, payload_size);
    } else { /* nal_unit_type == NAL_SEI_SUFFIX */
        return decode_nal_sei_suffix(gb, logctx, s, payload_type, payload_size);
    }
}

static int more_rbsp_data(GetBitContext *gb)
{
    return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
}

int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,
                           const HEVCParamSets *ps, int type)
{
    int ret;

    do {
        ret = decode_nal_sei_message(gb, logctx, s, ps, type);
        if (ret < 0)
            return ret;
    } while (more_rbsp_data(gb));
    return 1;
}

void ff_hevc_reset_sei(HEVCSEI *s)
{
    s->a53_caption.a53_caption_size = 0;
    av_freep(&s->a53_caption.a53_caption);
}


Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/*
2			* HEVC Supplementary Enhancement Information messages
3			*
4			* Copyright (C) 2012 - 2013 Guillaume Martres
5			* Copyright (C) 2012 - 2013 Gildas Cocherel
6			* Copyright (C) 2013 Vittorio Giovara
7			*
8			* This file is part of FFmpeg.
9			*
10			* FFmpeg is free software; you can redistribute it and/or
11			* modify it under the terms of the GNU Lesser General Public
12			* License as published by the Free Software Foundation; either
13			* version 2.1 of the License, or (at your option) any later version.
14			*
15			* FFmpeg is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18			* Lesser General Public License for more details.
19			*
20			* You should have received a copy of the GNU Lesser General Public
21			* License along with FFmpeg; if not, write to the Free Software
22			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23			*/
24
25			#include "golomb.h"
26			#include "hevc_ps.h"
27			#include "hevc_sei.h"
28
29		6848	static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash s, GetBitContext gb)
30			{
31			int cIdx, i;
32			uint8_t hash_type;
33			//uint16_t picture_crc;
34			//uint32_t picture_checksum;
35		6848	hash_type = get_bits(gb, 8);
36
37	✓✓	27392	for (cIdx = 0; cIdx < 3/((s->sps->chroma_format_idc == 0) ? 1 : 3)/; cIdx++) {
38	✓✓	20544	if (hash_type == 0) {
39		19497	s->is_md5 = 1;
40	✓✓	331449	for (i = 0; i < 16; i++)
41		311952	s->md5[cIdx][i] = get_bits(gb, 8);
42	✓✓	1047	} else if (hash_type == 1) {
43			// picture_crc = get_bits(gb, 16);
44		291	skip_bits(gb, 16);
45	✓✗	756	} else if (hash_type == 2) {
46			// picture_checksum = get_bits_long(gb, 32);
47		756	skip_bits(gb, 32);
48			}
49			}
50		6848	return 0;
51			}
52
53			static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay s, GetBitContext gb)
54			{
55			int i;
56			// Mastering primaries
57			for (i = 0; i < 3; i++) {
58			s->display_primaries[i][0] = get_bits(gb, 16);
59			s->display_primaries[i][1] = get_bits(gb, 16);
60			}
61			// White point (x, y)
62			s->white_point[0] = get_bits(gb, 16);
63			s->white_point[1] = get_bits(gb, 16);
64
65			// Max and min luminance of mastering display
66			s->max_luminance = get_bits_long(gb, 32);
67			s->min_luminance = get_bits_long(gb, 32);
68
69			// As this SEI message comes before the first frame that references it,
70			// initialize the flag to 2 and decrement on IRAP access unit so it
71			// persists for the coded video sequence (e.g., between two IRAPs)
72			s->present = 2;
73			return 0;
74			}
75
76			static int decode_nal_sei_content_light_info(HEVCSEIContentLight s, GetBitContext gb)
77			{
78			// Max and average light levels
79			s->max_content_light_level = get_bits_long(gb, 16);
80			s->max_pic_average_light_level = get_bits_long(gb, 16);
81			// As this SEI message comes before the first frame that references it,
82			// initialize the flag to 2 and decrement on IRAP access unit so it
83			// persists for the coded video sequence (e.g., between two IRAPs)
84			s->present = 2;
85			return 0;
86			}
87
88			static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking s, GetBitContext gb)
89			{
90			get_ue_golomb_long(gb); // frame_packing_arrangement_id
91			s->present = !get_bits1(gb);
92
93			if (s->present) {
94			s->arrangement_type = get_bits(gb, 7);
95			s->quincunx_subsampling = get_bits1(gb);
96			s->content_interpretation_type = get_bits(gb, 6);
97
98			// spatial_flipping_flag, frame0_flipped_flag, field_views_flag
99			skip_bits(gb, 3);
100			s->current_frame_is_frame0_flag = get_bits1(gb);
101			// frame0_self_contained_flag, frame1_self_contained_flag
102			skip_bits(gb, 2);
103
104			if (!s->quincunx_subsampling && s->arrangement_type != 5)
105			skip_bits(gb, 16); // frame[01]_grid_position_[xy]
106			skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte
107			skip_bits1(gb); // frame_packing_arrangement_persistence_flag
108			}
109			skip_bits1(gb); // upsampled_aspect_ratio_flag
110			return 0;
111			}
112
113			static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation s, GetBitContext gb)
114			{
115			s->present = !get_bits1(gb);
116
117			if (s->present) {
118			s->hflip = get_bits1(gb); // hor_flip
119			s->vflip = get_bits1(gb); // ver_flip
120
121			s->anticlockwise_rotation = get_bits(gb, 16);
122			skip_bits1(gb); // display_orientation_persistence_flag
123			}
124
125			return 0;
126			}
127
128		1173	static int decode_nal_sei_pic_timing(HEVCSEI s, GetBitContext gb, const HEVCParamSets *ps,
129			void *logctx, int size)
130			{
131		1173	HEVCSEIPictureTiming *h = &s->picture_timing;
132			HEVCSPS *sps;
133
134	✓✓	1173	if (!ps->sps_list[s->active_seq_parameter_set_id])
135		44	return(AVERROR(ENOMEM));
136		1129	sps = (HEVCSPS*)ps->sps_list[s->active_seq_parameter_set_id]->data;
137
138	✓✓	1129	if (sps->vui.frame_field_info_present_flag) {
139		646	int pic_struct = get_bits(gb, 4);
140		646	h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
141	✓✗✓✓ ✗✓	646	if (pic_struct == 2 \|\| pic_struct == 10 \|\| pic_struct == 12) {
142		10	av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n");
143		10	h->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
144	✓✗✓✗ ✓✓	636	} else if (pic_struct == 1 \|\| pic_struct == 9 \|\| pic_struct == 11) {
145		11	av_log(logctx, AV_LOG_DEBUG, "TOP Field\n");
146		11	h->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
147			}
148		646	get_bits(gb, 2); // source_scan_type
149		646	get_bits(gb, 1); // duplicate_flag
150		646	skip_bits1(gb);
151		646	size--;
152			}
153		1129	skip_bits_long(gb, 8 * size);
154
155		1129	return 0;
156			}
157
158			static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption s, GetBitContext gb,
159			int size)
160			{
161			int flag;
162			int user_data_type_code;
163			int cc_count;
164
165			if (size < 3)
166			return AVERROR(EINVAL);
167
168			user_data_type_code = get_bits(gb, 8);
169			if (user_data_type_code == 0x3) {
170			skip_bits(gb, 1); // reserved
171
172			flag = get_bits(gb, 1); // process_cc_data_flag
173			if (flag) {
174			skip_bits(gb, 1);
175			cc_count = get_bits(gb, 5);
176			skip_bits(gb, 8); // reserved
177			size -= 2;
178
179			if (cc_count && size >= cc_count * 3) {
180			const uint64_t new_size = (s->a53_caption_size + cc_count
181			* UINT64_C(3));
182			int i, ret;
183
184			if (new_size > INT_MAX)
185			return AVERROR(EINVAL);
186
187			/* Allow merging of the cc data from two fields. */
188			ret = av_reallocp(&s->a53_caption, new_size);
189			if (ret < 0)
190			return ret;
191
192			for (i = 0; i < cc_count; i++) {
193			s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
194			s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
195			s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
196			}
197			skip_bits(gb, 8); // marker_bits
198			}
199			}
200			} else {
201			int i;
202			for (i = 0; i < size - 1; i++)
203			skip_bits(gb, 8);
204			}
205
206			return 0;
207			}
208
209		64	static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI s, GetBitContext gb,
210			int size)
211			{
212			uint32_t country_code;
213			uint32_t user_identifier;
214
215	✗✓	64	if (size < 7)
216			return AVERROR(EINVAL);
217		64	size -= 7;
218
219		64	country_code = get_bits(gb, 8);
220	✗✓	64	if (country_code == 0xFF) {
221			skip_bits(gb, 8);
222			size--;
223			}
224
225		64	skip_bits(gb, 8);
226		64	skip_bits(gb, 8);
227
228		64	user_identifier = get_bits_long(gb, 32);
229
230	✗✓	64	switch (user_identifier) {
231			case MKBETAG('G', 'A', '9', '4'):
232			return decode_registered_user_data_closed_caption(&s->a53_caption, gb, size);
233		64	default:
234		64	skip_bits_long(gb, size * 8);
235		64	break;
236			}
237		64	return 0;
238			}
239
240		27	static int decode_nal_sei_active_parameter_sets(HEVCSEI s, GetBitContext gb, void *logctx)
241			{
242			int num_sps_ids_minus1;
243			int i;
244			unsigned active_seq_parameter_set_id;
245
246		27	get_bits(gb, 4); // active_video_parameter_set_id
247		27	get_bits(gb, 1); // self_contained_cvs_flag
248		27	get_bits(gb, 1); // num_sps_ids_minus1
249		27	num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
250
251	✓✗✗✓	27	if (num_sps_ids_minus1 < 0 \|\| num_sps_ids_minus1 > 15) {
252			av_log(logctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
253			return AVERROR_INVALIDDATA;
254			}
255
256		27	active_seq_parameter_set_id = get_ue_golomb_long(gb);
257	✗✓	27	if (active_seq_parameter_set_id >= HEVC_MAX_SPS_COUNT) {
258			av_log(logctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
259			return AVERROR_INVALIDDATA;
260			}
261		27	s->active_seq_parameter_set_id = active_seq_parameter_set_id;
262
263	✗✓	27	for (i = 1; i <= num_sps_ids_minus1; i++)
264			get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
265
266		27	return 0;
267			}
268
269			static int decode_nal_sei_alternative_transfer(HEVCSEIAlternativeTransfer s, GetBitContext gb)
270			{
271			s->present = 1;
272			s->preferred_transfer_characteristics = get_bits(gb, 8);
273			return 0;
274			}
275
276		1421	static int decode_nal_sei_prefix(GetBitContext gb, void logctx, HEVCSEI *s,
277			const HEVCParamSets *ps, int type, int size)
278			{
279	✗✗✗✓ ✗✗✓✓ ✗✓	1421	switch (type) {
280			case 256: // Mismatched value from HM 8.1
281			return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
282			case HEVC_SEI_TYPE_FRAME_PACKING:
283			return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb);
284			case HEVC_SEI_TYPE_DISPLAY_ORIENTATION:
285			return decode_nal_sei_display_orientation(&s->display_orientation, gb);
286		1173	case HEVC_SEI_TYPE_PICTURE_TIMING:
287		1173	return decode_nal_sei_pic_timing(s, gb, ps, logctx, size);
288			case HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO:
289			return decode_nal_sei_mastering_display_info(&s->mastering_display, gb);
290			case HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
291			return decode_nal_sei_content_light_info(&s->content_light, gb);
292		27	case HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS:
293		27	return decode_nal_sei_active_parameter_sets(s, gb, logctx);
294		64	case HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
295		64	return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, size);
296			case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
297			return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb);
298		157	default:
299		157	av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
300		157	skip_bits_long(gb, 8 * size);
301		157	return 0;
302			}
303			}
304
305		6848	static int decode_nal_sei_suffix(GetBitContext gb, void logctx, HEVCSEI *s,
306			int type, int size)
307			{
308	✓✗	6848	switch (type) {
309		6848	case HEVC_SEI_TYPE_DECODED_PICTURE_HASH:
310		6848	return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
311			default:
312			av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
313			skip_bits_long(gb, 8 * size);
314			return 0;
315			}
316			}
317
318		8269	static int decode_nal_sei_message(GetBitContext gb, void logctx, HEVCSEI *s,
319			const HEVCParamSets *ps, int nal_unit_type)
320			{
321		8269	int payload_type = 0;
322		8269	int payload_size = 0;
323		8269	int byte = 0xFF;
324		8269	av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n");
325
326	✓✓	16538	while (byte == 0xFF) {
327	✓✗✗✓	8269	if (get_bits_left(gb) < 16 \|\| payload_type > INT_MAX - 255)
328			return AVERROR_INVALIDDATA;
329		8269	byte = get_bits(gb, 8);
330		8269	payload_type += byte;
331			}
332		8269	byte = 0xFF;
333	✓✓	16581	while (byte == 0xFF) {
334	✗✓	8312	if (get_bits_left(gb) < 8 + 8LL*payload_size)
335			return AVERROR_INVALIDDATA;
336		8312	byte = get_bits(gb, 8);
337		8312	payload_size += byte;
338			}
339	✓✓	8269	if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
340		1421	return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, payload_size);
341			} else { /* nal_unit_type == NAL_SEI_SUFFIX */
342		6848	return decode_nal_sei_suffix(gb, logctx, s, payload_type, payload_size);
343			}
344			}
345
346		8225	static int more_rbsp_data(GetBitContext *gb)
347			{
348	✓✓✓✗	8225	return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
349			}
350
351		8269	int ff_hevc_decode_nal_sei(GetBitContext gb, void logctx, HEVCSEI *s,
352			const HEVCParamSets *ps, int type)
353			{
354			int ret;
355
356			do {
357		8269	ret = decode_nal_sei_message(gb, logctx, s, ps, type);
358	✓✓	8269	if (ret < 0)
359		44	return ret;
360	✓✓	8225	} while (more_rbsp_data(gb));
361		8222	return 1;
362			}
363
364		12377	void ff_hevc_reset_sei(HEVCSEI *s)
365			{
366		12377	s->a53_caption.a53_caption_size = 0;
367		12377	av_freep(&s->a53_caption.a53_caption);
368		12377	}