FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/hevc_sei.c	Lines:	131	238	55.0 %
Date:	2020-11-28 20:53:16	Branches:	65	118	55.1 %


/*
 * 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 "atsc_a53.h"
#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(gb, 16);
    s->max_pic_average_light_level = get_bits(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;
        } else if (pic_struct == 7) {
            av_log(logctx, AV_LOG_DEBUG, "Frame/Field Doubling\n");
            h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING;
        } else if (pic_struct == 8) {
            av_log(logctx, AV_LOG_DEBUG, "Frame/Field Tripling\n");
            h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING;
        }
        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 ret;

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

    ret = ff_parse_a53_cc(&s->buf_ref, gb->buffer + get_bits_count(gb) / 8, size);

    if (ret < 0)
        return ret;

    skip_bits_long(gb, size * 8);

    return 0;
}

static int decode_nal_sei_user_data_unregistered(HEVCSEIUnregistered *s, GetBitContext *gb,
                                                      int size)
{
    AVBufferRef *buf_ref, **tmp;

    if (size < 16 || size >= INT_MAX - 1)
       return AVERROR_INVALIDDATA;

    tmp = av_realloc_array(s->buf_ref, s->nb_buf_ref + 1, sizeof(*s->buf_ref));
    if (!tmp)
        return AVERROR(ENOMEM);
    s->buf_ref = tmp;

    buf_ref = av_buffer_alloc(size + 1);
    if (!buf_ref)
        return AVERROR(ENOMEM);

    for (int i = 0; i < size; i++)
        buf_ref->data[i] = get_bits(gb, 8);
    buf_ref->data[size] = 0;
    buf_ref->size = size;
    s->buf_ref[s->nb_buf_ref++] = buf_ref;

    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_timecode(HEVCSEITimeCode *s, GetBitContext *gb)
{
    s->num_clock_ts = get_bits(gb, 2);

    for (int i = 0; i < s->num_clock_ts; i++) {
        s->clock_timestamp_flag[i] =  get_bits(gb, 1);

        if (s->clock_timestamp_flag[i]) {
            s->units_field_based_flag[i] = get_bits(gb, 1);
            s->counting_type[i]          = get_bits(gb, 5);
            s->full_timestamp_flag[i]    = get_bits(gb, 1);
            s->discontinuity_flag[i]     = get_bits(gb, 1);
            s->cnt_dropped_flag[i]       = get_bits(gb, 1);

            s->n_frames[i]               = get_bits(gb, 9);

            if (s->full_timestamp_flag[i]) {
                s->seconds_value[i]      = av_clip(get_bits(gb, 6), 0, 59);
                s->minutes_value[i]      = av_clip(get_bits(gb, 6), 0, 59);
                s->hours_value[i]        = av_clip(get_bits(gb, 5), 0, 23);
            } else {
                s->seconds_flag[i] = get_bits(gb, 1);
                if (s->seconds_flag[i]) {
                    s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59);
                    s->minutes_flag[i]  = get_bits(gb, 1);
                    if (s->minutes_flag[i]) {
                        s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59);
                        s->hours_flag[i] =  get_bits(gb, 1);
                        if (s->hours_flag[i]) {
                            s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23);
                        }
                    }
                }
            }

            s->time_offset_length[i] = get_bits(gb, 5);
            if (s->time_offset_length[i] > 0) {
                s->time_offset_value[i] = get_bits(gb, s->time_offset_length[i]);
            }
        }
    }

    s->present = 1;
    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_USER_DATA_UNREGISTERED:
        return decode_nal_sei_user_data_unregistered(&s->unregistered, gb, size);
    case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
        return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb);
    case HEVC_SEI_TYPE_TIME_CODE:
        return decode_nal_sei_timecode(&s->timecode, 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)
{
    av_buffer_unref(&s->a53_caption.buf_ref);

    for (int i = 0; i < s->unregistered.nb_buf_ref; i++)
        av_buffer_unref(&s->unregistered.buf_ref[i]);
    s->unregistered.nb_buf_ref = 0;
    av_freep(&s->unregistered.buf_ref);
}


Generated by: GCOVR (Version 4.2)

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 "atsc_a53.h"
26			#include "golomb.h"
27			#include "hevc_ps.h"
28			#include "hevc_sei.h"
29
30		6848	static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash s, GetBitContext gb)
31			{
32			int cIdx, i;
33			uint8_t hash_type;
34			//uint16_t picture_crc;
35			//uint32_t picture_checksum;
36		6848	hash_type = get_bits(gb, 8);
37
38	✓✓	27392	for (cIdx = 0; cIdx < 3/((s->sps->chroma_format_idc == 0) ? 1 : 3)/; cIdx++) {
39	✓✓	20544	if (hash_type == 0) {
40		19497	s->is_md5 = 1;
41	✓✓	331449	for (i = 0; i < 16; i++)
42		311952	s->md5[cIdx][i] = get_bits(gb, 8);
43	✓✓	1047	} else if (hash_type == 1) {
44			// picture_crc = get_bits(gb, 16);
45		291	skip_bits(gb, 16);
46	✓✗	756	} else if (hash_type == 2) {
47			// picture_checksum = get_bits_long(gb, 32);
48		756	skip_bits(gb, 32);
49			}
50			}
51		6848	return 0;
52			}
53
54			static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay s, GetBitContext gb)
55			{
56			int i;
57			// Mastering primaries
58			for (i = 0; i < 3; i++) {
59			s->display_primaries[i][0] = get_bits(gb, 16);
60			s->display_primaries[i][1] = get_bits(gb, 16);
61			}
62			// White point (x, y)
63			s->white_point[0] = get_bits(gb, 16);
64			s->white_point[1] = get_bits(gb, 16);
65
66			// Max and min luminance of mastering display
67			s->max_luminance = get_bits_long(gb, 32);
68			s->min_luminance = get_bits_long(gb, 32);
69
70			// As this SEI message comes before the first frame that references it,
71			// initialize the flag to 2 and decrement on IRAP access unit so it
72			// persists for the coded video sequence (e.g., between two IRAPs)
73			s->present = 2;
74			return 0;
75			}
76
77			static int decode_nal_sei_content_light_info(HEVCSEIContentLight s, GetBitContext gb)
78			{
79			// Max and average light levels
80			s->max_content_light_level = get_bits(gb, 16);
81			s->max_pic_average_light_level = get_bits(gb, 16);
82			// As this SEI message comes before the first frame that references it,
83			// initialize the flag to 2 and decrement on IRAP access unit so it
84			// persists for the coded video sequence (e.g., between two IRAPs)
85			s->present = 2;
86			return 0;
87			}
88
89			static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking s, GetBitContext gb)
90			{
91			get_ue_golomb_long(gb); // frame_packing_arrangement_id
92			s->present = !get_bits1(gb);
93
94			if (s->present) {
95			s->arrangement_type = get_bits(gb, 7);
96			s->quincunx_subsampling = get_bits1(gb);
97			s->content_interpretation_type = get_bits(gb, 6);
98
99			// spatial_flipping_flag, frame0_flipped_flag, field_views_flag
100			skip_bits(gb, 3);
101			s->current_frame_is_frame0_flag = get_bits1(gb);
102			// frame0_self_contained_flag, frame1_self_contained_flag
103			skip_bits(gb, 2);
104
105			if (!s->quincunx_subsampling && s->arrangement_type != 5)
106			skip_bits(gb, 16); // frame[01]_grid_position_[xy]
107			skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte
108			skip_bits1(gb); // frame_packing_arrangement_persistence_flag
109			}
110			skip_bits1(gb); // upsampled_aspect_ratio_flag
111			return 0;
112			}
113
114			static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation s, GetBitContext gb)
115			{
116			s->present = !get_bits1(gb);
117
118			if (s->present) {
119			s->hflip = get_bits1(gb); // hor_flip
120			s->vflip = get_bits1(gb); // ver_flip
121
122			s->anticlockwise_rotation = get_bits(gb, 16);
123			skip_bits1(gb); // display_orientation_persistence_flag
124			}
125
126			return 0;
127			}
128
129		1204	static int decode_nal_sei_pic_timing(HEVCSEI s, GetBitContext gb, const HEVCParamSets *ps,
130			void *logctx, int size)
131			{
132		1204	HEVCSEIPictureTiming *h = &s->picture_timing;
133			HEVCSPS *sps;
134
135	✓✓	1204	if (!ps->sps_list[s->active_seq_parameter_set_id])
136		44	return(AVERROR(ENOMEM));
137		1160	sps = (HEVCSPS*)ps->sps_list[s->active_seq_parameter_set_id]->data;
138
139	✓✓	1160	if (sps->vui.frame_field_info_present_flag) {
140		677	int pic_struct = get_bits(gb, 4);
141		677	h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
142	✓✗✓✓ ✗✓	677	if (pic_struct == 2 \|\| pic_struct == 10 \|\| pic_struct == 12) {
143		10	av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n");
144		10	h->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
145	✓✗✓✗ ✓✓	667	} else if (pic_struct == 1 \|\| pic_struct == 9 \|\| pic_struct == 11) {
146		11	av_log(logctx, AV_LOG_DEBUG, "TOP Field\n");
147		11	h->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
148	✗✓	656	} else if (pic_struct == 7) {
149			av_log(logctx, AV_LOG_DEBUG, "Frame/Field Doubling\n");
150			h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING;
151	✗✓	656	} else if (pic_struct == 8) {
152			av_log(logctx, AV_LOG_DEBUG, "Frame/Field Tripling\n");
153			h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING;
154			}
155		677	get_bits(gb, 2); // source_scan_type
156		677	get_bits(gb, 1); // duplicate_flag
157		677	skip_bits1(gb);
158		677	size--;
159			}
160		1160	skip_bits_long(gb, 8 * size);
161
162		1160	return 0;
163			}
164
165			static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption s, GetBitContext gb,
166			int size)
167			{
168			int ret;
169
170			if (size < 3)
171			return AVERROR(EINVAL);
172
173			ret = ff_parse_a53_cc(&s->buf_ref, gb->buffer + get_bits_count(gb) / 8, size);
174
175			if (ret < 0)
176			return ret;
177
178			skip_bits_long(gb, size * 8);
179
180			return 0;
181			}
182
183		9	static int decode_nal_sei_user_data_unregistered(HEVCSEIUnregistered s, GetBitContext gb,
184			int size)
185			{
186			AVBufferRef buf_ref, *tmp;
187
188	✓✗✗✓	9	if (size < 16 \|\| size >= INT_MAX - 1)
189			return AVERROR_INVALIDDATA;
190
191		9	tmp = av_realloc_array(s->buf_ref, s->nb_buf_ref + 1, sizeof(*s->buf_ref));
192	✗✓	9	if (!tmp)
193			return AVERROR(ENOMEM);
194		9	s->buf_ref = tmp;
195
196		9	buf_ref = av_buffer_alloc(size + 1);
197	✗✓	9	if (!buf_ref)
198			return AVERROR(ENOMEM);
199
200	✓✓	12059	for (int i = 0; i < size; i++)
201		12050	buf_ref->data[i] = get_bits(gb, 8);
202		9	buf_ref->data[size] = 0;
203		9	buf_ref->size = size;
204		9	s->buf_ref[s->nb_buf_ref++] = buf_ref;
205
206		9	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		30	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		30	get_bits(gb, 4); // active_video_parameter_set_id
247		30	get_bits(gb, 1); // self_contained_cvs_flag
248		30	get_bits(gb, 1); // num_sps_ids_minus1
249		30	num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
250
251	✓✗✗✓	30	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		30	active_seq_parameter_set_id = get_ue_golomb_long(gb);
257	✗✓	30	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		30	s->active_seq_parameter_set_id = active_seq_parameter_set_id;
262
263	✗✓	30	for (i = 1; i <= num_sps_ids_minus1; i++)
264			get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
265
266		30	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		64	static int decode_nal_sei_timecode(HEVCSEITimeCode s, GetBitContext gb)
277			{
278		64	s->num_clock_ts = get_bits(gb, 2);
279
280	✓✓	128	for (int i = 0; i < s->num_clock_ts; i++) {
281		64	s->clock_timestamp_flag[i] = get_bits(gb, 1);
282
283	✗✓	64	if (s->clock_timestamp_flag[i]) {
284			s->units_field_based_flag[i] = get_bits(gb, 1);
285			s->counting_type[i] = get_bits(gb, 5);
286			s->full_timestamp_flag[i] = get_bits(gb, 1);
287			s->discontinuity_flag[i] = get_bits(gb, 1);
288			s->cnt_dropped_flag[i] = get_bits(gb, 1);
289
290			s->n_frames[i] = get_bits(gb, 9);
291
292			if (s->full_timestamp_flag[i]) {
293			s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59);
294			s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59);
295			s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23);
296			} else {
297			s->seconds_flag[i] = get_bits(gb, 1);
298			if (s->seconds_flag[i]) {
299			s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59);
300			s->minutes_flag[i] = get_bits(gb, 1);
301			if (s->minutes_flag[i]) {
302			s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59);
303			s->hours_flag[i] = get_bits(gb, 1);
304			if (s->hours_flag[i]) {
305			s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23);
306			}
307			}
308			}
309			}
310
311			s->time_offset_length[i] = get_bits(gb, 5);
312			if (s->time_offset_length[i] > 0) {
313			s->time_offset_value[i] = get_bits(gb, s->time_offset_length[i]);
314			}
315			}
316			}
317
318		64	s->present = 1;
319		64	return 0;
320			}
321
322
323		1461	static int decode_nal_sei_prefix(GetBitContext gb, void logctx, HEVCSEI *s,
324			const HEVCParamSets *ps, int type, int size)
325			{
326	✗✗✗✓ ✗✗✓✓ ✓✗✓✓	1461	switch (type) {
327			case 256: // Mismatched value from HM 8.1
328			return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
329			case HEVC_SEI_TYPE_FRAME_PACKING:
330			return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb);
331			case HEVC_SEI_TYPE_DISPLAY_ORIENTATION:
332			return decode_nal_sei_display_orientation(&s->display_orientation, gb);
333		1204	case HEVC_SEI_TYPE_PICTURE_TIMING:
334		1204	return decode_nal_sei_pic_timing(s, gb, ps, logctx, size);
335			case HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO:
336			return decode_nal_sei_mastering_display_info(&s->mastering_display, gb);
337			case HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
338			return decode_nal_sei_content_light_info(&s->content_light, gb);
339		30	case HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS:
340		30	return decode_nal_sei_active_parameter_sets(s, gb, logctx);
341		64	case HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
342		64	return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, size);
343		9	case HEVC_SEI_TYPE_USER_DATA_UNREGISTERED:
344		9	return decode_nal_sei_user_data_unregistered(&s->unregistered, gb, size);
345			case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
346			return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb);
347		64	case HEVC_SEI_TYPE_TIME_CODE:
348		64	return decode_nal_sei_timecode(&s->timecode, gb);
349		90	default:
350		90	av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
351		90	skip_bits_long(gb, 8 * size);
352		90	return 0;
353			}
354			}
355
356		6848	static int decode_nal_sei_suffix(GetBitContext gb, void logctx, HEVCSEI *s,
357			int type, int size)
358			{
359	✓✗	6848	switch (type) {
360		6848	case HEVC_SEI_TYPE_DECODED_PICTURE_HASH:
361		6848	return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
362			default:
363			av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
364			skip_bits_long(gb, 8 * size);
365			return 0;
366			}
367			}
368
369		8373	static int decode_nal_sei_message(GetBitContext gb, void logctx, HEVCSEI *s,
370			const HEVCParamSets *ps, int nal_unit_type)
371			{
372		8373	int payload_type = 0;
373		8373	int payload_size = 0;
374		8373	int byte = 0xFF;
375		8373	av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n");
376
377	✓✓	16682	while (byte == 0xFF) {
378	✓✓✗✓	8373	if (get_bits_left(gb) < 16 \|\| payload_type > INT_MAX - 255)
379		64	return AVERROR_INVALIDDATA;
380		8309	byte = get_bits(gb, 8);
381		8309	payload_type += byte;
382			}
383		8309	byte = 0xFF;
384	✓✓	16661	while (byte == 0xFF) {
385	✗✓	8352	if (get_bits_left(gb) < 8 + 8LL*payload_size)
386			return AVERROR_INVALIDDATA;
387		8352	byte = get_bits(gb, 8);
388		8352	payload_size += byte;
389			}
390	✓✓	8309	if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
391		1461	return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, payload_size);
392			} else { /* nal_unit_type == NAL_SEI_SUFFIX */
393		6848	return decode_nal_sei_suffix(gb, logctx, s, payload_type, payload_size);
394			}
395			}
396
397		8265	static int more_rbsp_data(GetBitContext *gb)
398			{
399	✓✓✓✗	8265	return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
400			}
401
402		8373	int ff_hevc_decode_nal_sei(GetBitContext gb, void logctx, HEVCSEI *s,
403			const HEVCParamSets *ps, int type)
404			{
405			int ret;
406
407			do {
408		8373	ret = decode_nal_sei_message(gb, logctx, s, ps, type);
409	✓✓	8373	if (ret < 0)
410		108	return ret;
411	✓✓	8265	} while (more_rbsp_data(gb));
412		8195	return 1;
413			}
414
415		12403	void ff_hevc_reset_sei(HEVCSEI *s)
416			{
417		12403	av_buffer_unref(&s->a53_caption.buf_ref);
418
419	✓✓	12406	for (int i = 0; i < s->unregistered.nb_buf_ref; i++)
420		3	av_buffer_unref(&s->unregistered.buf_ref[i]);
421		12403	s->unregistered.nb_buf_ref = 0;
422		12403	av_freep(&s->unregistered.buf_ref);
423		12403	}