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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * H.26L/H.264/AVC/JVT/14496-10/... parameter set decoding |
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| 3 | * Copyright (c) 2003 Michael Niedermayer |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * @file |
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| 24 | * H.264 / AVC / MPEG4 part10 parameter set decoding. |
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| 25 | * @author Michael Niedermayer |
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| 26 | */ |
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| 27 | |||
| 28 | #include |
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| 29 | |||
| 30 | #include "libavutil/imgutils.h" |
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| 31 | #include "internal.h" |
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| 32 | #include "avcodec.h" |
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| 33 | #include "h264.h" |
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| 34 | #include "h264data.h" |
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| 35 | #include "golomb.h" |
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| 36 | |||
| 37 | #define MAX_LOG2_MAX_FRAME_NUM (12 + 4) |
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| 38 | #define MIN_LOG2_MAX_FRAME_NUM 4 |
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| 39 | |||
| 40 | #define QP(qP, depth) ((qP) + 6 * ((depth) - 8)) |
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| 41 | |||
| 42 | #define CHROMA_QP_TABLE_END(d) \ |
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| 43 | QP(0, d), QP(1, d), QP(2, d), QP(3, d), QP(4, d), QP(5, d), \ |
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| 44 | QP(6, d), QP(7, d), QP(8, d), QP(9, d), QP(10, d), QP(11, d), \ |
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| 45 | QP(12, d), QP(13, d), QP(14, d), QP(15, d), QP(16, d), QP(17, d), \ |
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| 46 | QP(18, d), QP(19, d), QP(20, d), QP(21, d), QP(22, d), QP(23, d), \ |
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| 47 | QP(24, d), QP(25, d), QP(26, d), QP(27, d), QP(28, d), QP(29, d), \ |
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| 48 | QP(29, d), QP(30, d), QP(31, d), QP(32, d), QP(32, d), QP(33, d), \ |
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| 49 | QP(34, d), QP(34, d), QP(35, d), QP(35, d), QP(36, d), QP(36, d), \ |
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| 50 | QP(37, d), QP(37, d), QP(37, d), QP(38, d), QP(38, d), QP(38, d), \ |
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| 51 | QP(39, d), QP(39, d), QP(39, d), QP(39, d) |
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| 52 | |||
| 53 | const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1] = { |
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| 54 | { CHROMA_QP_TABLE_END(8) }, |
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| 55 | { 0, 1, 2, 3, 4, 5, |
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| 56 | CHROMA_QP_TABLE_END(9) }, |
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| 57 | { 0, 1, 2, 3, 4, 5, |
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| 58 | 6, 7, 8, 9, 10, 11, |
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| 59 | CHROMA_QP_TABLE_END(10) }, |
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| 60 | { 0, 1, 2, 3, 4, 5, |
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| 61 | 6, 7, 8, 9, 10, 11, |
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| 62 | 12,13,14,15, 16, 17, |
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| 63 | CHROMA_QP_TABLE_END(11) }, |
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| 64 | { 0, 1, 2, 3, 4, 5, |
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| 65 | 6, 7, 8, 9, 10, 11, |
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| 66 | 12,13,14,15, 16, 17, |
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| 67 | 18,19,20,21, 22, 23, |
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| 68 | CHROMA_QP_TABLE_END(12) }, |
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| 69 | { 0, 1, 2, 3, 4, 5, |
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| 70 | 6, 7, 8, 9, 10, 11, |
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| 71 | 12,13,14,15, 16, 17, |
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| 72 | 18,19,20,21, 22, 23, |
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| 73 | 24,25,26,27, 28, 29, |
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| 74 | CHROMA_QP_TABLE_END(13) }, |
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| 75 | { 0, 1, 2, 3, 4, 5, |
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| 76 | 6, 7, 8, 9, 10, 11, |
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| 77 | 12,13,14,15, 16, 17, |
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| 78 | 18,19,20,21, 22, 23, |
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| 79 | 24,25,26,27, 28, 29, |
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| 80 | 30,31,32,33, 34, 35, |
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| 81 | CHROMA_QP_TABLE_END(14) }, |
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| 82 | }; |
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| 83 | |||
| 84 | static const uint8_t default_scaling4[2][16] = { |
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| 85 | { 6, 13, 20, 28, 13, 20, 28, 32, |
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| 86 | 20, 28, 32, 37, 28, 32, 37, 42 }, |
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| 87 | { 10, 14, 20, 24, 14, 20, 24, 27, |
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| 88 | 20, 24, 27, 30, 24, 27, 30, 34 } |
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| 89 | }; |
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| 90 | |||
| 91 | static const uint8_t default_scaling8[2][64] = { |
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| 92 | { 6, 10, 13, 16, 18, 23, 25, 27, |
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| 93 | 10, 11, 16, 18, 23, 25, 27, 29, |
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| 94 | 13, 16, 18, 23, 25, 27, 29, 31, |
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| 95 | 16, 18, 23, 25, 27, 29, 31, 33, |
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| 96 | 18, 23, 25, 27, 29, 31, 33, 36, |
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| 97 | 23, 25, 27, 29, 31, 33, 36, 38, |
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| 98 | 25, 27, 29, 31, 33, 36, 38, 40, |
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| 99 | 27, 29, 31, 33, 36, 38, 40, 42 }, |
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| 100 | { 9, 13, 15, 17, 19, 21, 22, 24, |
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| 101 | 13, 13, 17, 19, 21, 22, 24, 25, |
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| 102 | 15, 17, 19, 21, 22, 24, 25, 27, |
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| 103 | 17, 19, 21, 22, 24, 25, 27, 28, |
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| 104 | 19, 21, 22, 24, 25, 27, 28, 30, |
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| 105 | 21, 22, 24, 25, 27, 28, 30, 32, |
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| 106 | 22, 24, 25, 27, 28, 30, 32, 33, |
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| 107 | 24, 25, 27, 28, 30, 32, 33, 35 } |
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| 108 | }; |
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| 109 | |||
| 110 | static inline int decode_hrd_parameters(H264Context *h, SPS *sps) |
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| 111 | { |
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| 112 | int cpb_count, i; |
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| 113 | cpb_count = get_ue_golomb_31(&h->gb) + 1; |
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| 114 | |||
| 115 | if (cpb_count > 32U) { |
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| 116 | av_log(h->avctx, AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count); |
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| 117 | return AVERROR_INVALIDDATA; |
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| 118 | } |
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| 119 | |||
| 120 | get_bits(&h->gb, 4); /* bit_rate_scale */ |
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| 121 | get_bits(&h->gb, 4); /* cpb_size_scale */ |
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| 122 | for (i = 0; i < cpb_count; i++) { |
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| 123 | get_ue_golomb_long(&h->gb); /* bit_rate_value_minus1 */ |
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| 124 | get_ue_golomb_long(&h->gb); /* cpb_size_value_minus1 */ |
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| 125 | get_bits1(&h->gb); /* cbr_flag */ |
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| 126 | } |
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| 127 | sps->initial_cpb_removal_delay_length = get_bits(&h->gb, 5) + 1; |
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| 128 | sps->cpb_removal_delay_length = get_bits(&h->gb, 5) + 1; |
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| 129 | sps->dpb_output_delay_length = get_bits(&h->gb, 5) + 1; |
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| 130 | sps->time_offset_length = get_bits(&h->gb, 5); |
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| 131 | sps->cpb_cnt = cpb_count; |
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| 132 | return 0; |
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| 133 | } |
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| 134 | |||
| 135 | static inline int decode_vui_parameters(H264Context *h, SPS *sps) |
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| 136 | { |
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| 137 | int aspect_ratio_info_present_flag; |
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| 138 | unsigned int aspect_ratio_idc; |
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| 139 | |||
| 140 | aspect_ratio_info_present_flag = get_bits1(&h->gb); |
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| 141 | |||
| 142 | if (aspect_ratio_info_present_flag) { |
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| 143 | aspect_ratio_idc = get_bits(&h->gb, 8); |
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| 144 | if (aspect_ratio_idc == EXTENDED_SAR) { |
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| 145 | sps->sar.num = get_bits(&h->gb, 16); |
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| 146 | sps->sar.den = get_bits(&h->gb, 16); |
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| 147 | } else if (aspect_ratio_idc < FF_ARRAY_ELEMS(ff_h264_pixel_aspect)) { |
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| 148 | sps->sar = ff_h264_pixel_aspect[aspect_ratio_idc]; |
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| 149 | } else { |
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| 150 | av_log(h->avctx, AV_LOG_ERROR, "illegal aspect ratio\n"); |
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| 151 | return AVERROR_INVALIDDATA; |
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| 152 | } |
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| 153 | } else { |
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| 154 | sps->sar.num = |
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| 155 | sps->sar.den = 0; |
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| 156 | } |
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| 157 | |||
| 158 | if (get_bits1(&h->gb)) /* overscan_info_present_flag */ |
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| 159 | get_bits1(&h->gb); /* overscan_appropriate_flag */ |
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| 160 | |||
| 161 | sps->video_signal_type_present_flag = get_bits1(&h->gb); |
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| 162 | if (sps->video_signal_type_present_flag) { |
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| 163 | get_bits(&h->gb, 3); /* video_format */ |
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| 164 | sps->full_range = get_bits1(&h->gb); /* video_full_range_flag */ |
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| 165 | |||
| 166 | sps->colour_description_present_flag = get_bits1(&h->gb); |
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| 167 | if (sps->colour_description_present_flag) { |
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| 168 | sps->color_primaries = get_bits(&h->gb, 8); /* colour_primaries */ |
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| 169 | sps->color_trc = get_bits(&h->gb, 8); /* transfer_characteristics */ |
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| 170 | sps->colorspace = get_bits(&h->gb, 8); /* matrix_coefficients */ |
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| 171 | if (sps->color_primaries >= AVCOL_PRI_NB) |
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| 172 | sps->color_primaries = AVCOL_PRI_UNSPECIFIED; |
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| 173 | if (sps->color_trc >= AVCOL_TRC_NB) |
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| 174 | sps->color_trc = AVCOL_TRC_UNSPECIFIED; |
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| 175 | if (sps->colorspace >= AVCOL_SPC_NB) |
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| 176 | sps->colorspace = AVCOL_SPC_UNSPECIFIED; |
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| 177 | } |
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| 178 | } |
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| 179 | |||
| 180 | /* chroma_location_info_present_flag */ |
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| 181 | if (get_bits1(&h->gb)) { |
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| 182 | /* chroma_sample_location_type_top_field */ |
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| 183 | h->avctx->chroma_sample_location = get_ue_golomb(&h->gb) + 1; |
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| 184 | get_ue_golomb(&h->gb); /* chroma_sample_location_type_bottom_field */ |
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| 185 | } |
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| 186 | |||
| 187 | if (show_bits1(&h->gb) && get_bits_left(&h->gb) < 10) { |
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| 188 | av_log(h->avctx, AV_LOG_WARNING, "Truncated VUI\n"); |
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| 189 | return 0; |
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| 190 | } |
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| 191 | |||
| 192 | sps->timing_info_present_flag = get_bits1(&h->gb); |
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| 193 | if (sps->timing_info_present_flag) { |
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| 194 | unsigned num_units_in_tick = get_bits_long(&h->gb, 32); |
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| 195 | unsigned time_scale = get_bits_long(&h->gb, 32); |
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| 196 | if (!num_units_in_tick || !time_scale) { |
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| 197 | av_log(h->avctx, AV_LOG_ERROR, |
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| 198 | "time_scale/num_units_in_tick invalid or unsupported (%u/%u)\n", |
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| 199 | time_scale, num_units_in_tick); |
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| 200 | sps->timing_info_present_flag = 0; |
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| 201 | } else { |
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| 202 | sps->num_units_in_tick = num_units_in_tick; |
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| 203 | sps->time_scale = time_scale; |
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| 204 | } |
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| 205 | sps->fixed_frame_rate_flag = get_bits1(&h->gb); |
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| 206 | } |
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| 207 | |||
| 208 | sps->nal_hrd_parameters_present_flag = get_bits1(&h->gb); |
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| 209 | if (sps->nal_hrd_parameters_present_flag) |
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| 210 | if (decode_hrd_parameters(h, sps) < 0) |
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| 211 | return AVERROR_INVALIDDATA; |
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| 212 | sps->vcl_hrd_parameters_present_flag = get_bits1(&h->gb); |
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| 213 | if (sps->vcl_hrd_parameters_present_flag) |
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| 214 | if (decode_hrd_parameters(h, sps) < 0) |
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| 215 | return AVERROR_INVALIDDATA; |
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| 216 | if (sps->nal_hrd_parameters_present_flag || |
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| 217 | sps->vcl_hrd_parameters_present_flag) |
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| 218 | get_bits1(&h->gb); /* low_delay_hrd_flag */ |
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| 219 | sps->pic_struct_present_flag = get_bits1(&h->gb); |
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| 220 | if (!get_bits_left(&h->gb)) |
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| 221 | return 0; |
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| 222 | sps->bitstream_restriction_flag = get_bits1(&h->gb); |
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| 223 | if (sps->bitstream_restriction_flag) { |
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| 224 | get_bits1(&h->gb); /* motion_vectors_over_pic_boundaries_flag */ |
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| 225 | get_ue_golomb(&h->gb); /* max_bytes_per_pic_denom */ |
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| 226 | get_ue_golomb(&h->gb); /* max_bits_per_mb_denom */ |
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| 227 | get_ue_golomb(&h->gb); /* log2_max_mv_length_horizontal */ |
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| 228 | get_ue_golomb(&h->gb); /* log2_max_mv_length_vertical */ |
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| 229 | sps->num_reorder_frames = get_ue_golomb(&h->gb); |
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| 230 | get_ue_golomb(&h->gb); /*max_dec_frame_buffering*/ |
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| 231 | |||
| 232 | if (get_bits_left(&h->gb) < 0) { |
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| 233 | sps->num_reorder_frames = 0; |
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| 234 | sps->bitstream_restriction_flag = 0; |
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| 235 | } |
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| 236 | |||
| 237 | if (sps->num_reorder_frames > 16U |
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| 238 | /* max_dec_frame_buffering || max_dec_frame_buffering > 16 */) { |
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| 239 | av_log(h->avctx, AV_LOG_ERROR, |
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| 240 | "Clipping illegal num_reorder_frames %d\n", |
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| 241 | sps->num_reorder_frames); |
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| 242 | sps->num_reorder_frames = 16; |
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| 243 | return AVERROR_INVALIDDATA; |
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| 244 | } |
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| 245 | } |
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| 246 | |||
| 247 | return 0; |
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| 248 | } |
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| 249 | |||
| 250 | static void decode_scaling_list(H264Context *h, uint8_t *factors, int size, |
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| 251 | const uint8_t *jvt_list, |
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| 252 | const uint8_t *fallback_list) |
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| 253 | { |
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| 254 | int i, last = 8, next = 8; |
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| 255 | const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct; |
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| 256 | if (!get_bits1(&h->gb)) /* matrix not written, we use the predicted one */ |
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| 257 | memcpy(factors, fallback_list, size * sizeof(uint8_t)); |
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| 258 | else |
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| 259 | for (i = 0; i < size; i++) { |
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| 260 | if (next) |
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| 261 | next = (last + get_se_golomb(&h->gb)) & 0xff; |
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| 262 | if (!i && !next) { /* matrix not written, we use the preset one */ |
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| 263 | memcpy(factors, jvt_list, size * sizeof(uint8_t)); |
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| 264 | break; |
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| 265 | } |
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| 266 | last = factors[scan[i]] = next ? next : last; |
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| 267 | } |
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| 268 | } |
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| 269 | |||
| 270 | static void decode_scaling_matrices(H264Context *h, SPS *sps, |
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| 271 | PPS *pps, int is_sps, |
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| 272 | uint8_t(*scaling_matrix4)[16], |
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| 273 | uint8_t(*scaling_matrix8)[64]) |
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| 274 | { |
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| 275 | int fallback_sps = !is_sps && sps->scaling_matrix_present; |
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| 276 | const uint8_t *fallback[4] = { |
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| 277 | fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0], |
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| 278 | fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1], |
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| 279 | fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0], |
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| 280 | fallback_sps ? sps->scaling_matrix8[3] : default_scaling8[1] |
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| 281 | }; |
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| 282 | if (get_bits1(&h->gb)) { |
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| 283 | sps->scaling_matrix_present |= is_sps; |
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| 284 | decode_scaling_list(h, scaling_matrix4[0], 16, default_scaling4[0], fallback[0]); // Intra, Y |
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| 285 | decode_scaling_list(h, scaling_matrix4[1], 16, default_scaling4[0], scaling_matrix4[0]); // Intra, Cr |
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| 286 | decode_scaling_list(h, scaling_matrix4[2], 16, default_scaling4[0], scaling_matrix4[1]); // Intra, Cb |
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| 287 | decode_scaling_list(h, scaling_matrix4[3], 16, default_scaling4[1], fallback[1]); // Inter, Y |
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| 288 | decode_scaling_list(h, scaling_matrix4[4], 16, default_scaling4[1], scaling_matrix4[3]); // Inter, Cr |
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| 289 | decode_scaling_list(h, scaling_matrix4[5], 16, default_scaling4[1], scaling_matrix4[4]); // Inter, Cb |
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| 290 | if (is_sps || pps->transform_8x8_mode) { |
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| 291 | decode_scaling_list(h, scaling_matrix8[0], 64, default_scaling8[0], fallback[2]); // Intra, Y |
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| 292 | decode_scaling_list(h, scaling_matrix8[3], 64, default_scaling8[1], fallback[3]); // Inter, Y |
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| 293 | if (sps->chroma_format_idc == 3) { |
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| 294 | decode_scaling_list(h, scaling_matrix8[1], 64, default_scaling8[0], scaling_matrix8[0]); // Intra, Cr |
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| 295 | decode_scaling_list(h, scaling_matrix8[4], 64, default_scaling8[1], scaling_matrix8[3]); // Inter, Cr |
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| 296 | decode_scaling_list(h, scaling_matrix8[2], 64, default_scaling8[0], scaling_matrix8[1]); // Intra, Cb |
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| 297 | decode_scaling_list(h, scaling_matrix8[5], 64, default_scaling8[1], scaling_matrix8[4]); // Inter, Cb |
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| 298 | } |
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| 299 | } |
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| 300 | } |
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| 301 | } |
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| 302 | |||
| 303 | int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation) |
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| 304 | { |
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| 305 | int profile_idc, level_idc, constraint_set_flags = 0; |
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| 306 | unsigned int sps_id; |
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| 307 | int i, log2_max_frame_num_minus4; |
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| 308 | SPS *sps; |
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| 309 | |||
| 310 | profile_idc = get_bits(&h->gb, 8); |
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| 311 | constraint_set_flags |= get_bits1(&h->gb) << 0; // constraint_set0_flag |
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| 312 | constraint_set_flags |= get_bits1(&h->gb) << 1; // constraint_set1_flag |
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| 313 | constraint_set_flags |= get_bits1(&h->gb) << 2; // constraint_set2_flag |
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| 314 | constraint_set_flags |= get_bits1(&h->gb) << 3; // constraint_set3_flag |
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| 315 | constraint_set_flags |= get_bits1(&h->gb) << 4; // constraint_set4_flag |
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| 316 | constraint_set_flags |= get_bits1(&h->gb) << 5; // constraint_set5_flag |
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| 317 | skip_bits(&h->gb, 2); // reserved_zero_2bits |
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| 318 | level_idc = get_bits(&h->gb, 8); |
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| 319 | sps_id = get_ue_golomb_31(&h->gb); |
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| 320 | |||
| 321 | if (sps_id >= MAX_SPS_COUNT) { |
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| 322 | av_log(h->avctx, AV_LOG_ERROR, "sps_id %u out of range\n", sps_id); |
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| 323 | return AVERROR_INVALIDDATA; |
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| 324 | } |
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| 325 | sps = av_mallocz(sizeof(SPS)); |
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| 326 | if (!sps) |
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| 327 | return AVERROR(ENOMEM); |
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| 328 | |||
| 329 | sps->sps_id = sps_id; |
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| 330 | sps->time_offset_length = 24; |
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| 331 | sps->profile_idc = profile_idc; |
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| 332 | sps->constraint_set_flags = constraint_set_flags; |
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| 333 | sps->level_idc = level_idc; |
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| 334 | sps->full_range = -1; |
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| 335 | |||
| 336 | memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4)); |
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| 337 | memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8)); |
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| 338 | sps->scaling_matrix_present = 0; |
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| 339 | sps->colorspace = 2; //AVCOL_SPC_UNSPECIFIED |
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| 340 | |||
| 341 | if (sps->profile_idc == 100 || // High profile |
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| 342 | sps->profile_idc == 110 || // High10 profile |
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| 343 | sps->profile_idc == 122 || // High422 profile |
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| 344 | sps->profile_idc == 244 || // High444 Predictive profile |
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| 345 | sps->profile_idc == 44 || // Cavlc444 profile |
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| 346 | sps->profile_idc == 83 || // Scalable Constrained High profile (SVC) |
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| 347 | sps->profile_idc == 86 || // Scalable High Intra profile (SVC) |
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| 348 | sps->profile_idc == 118 || // Stereo High profile (MVC) |
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| 349 | sps->profile_idc == 128 || // Multiview High profile (MVC) |
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| 350 | sps->profile_idc == 138 || // Multiview Depth High profile (MVCD) |
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| 351 | sps->profile_idc == 144) { // old High444 profile |
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| 352 | sps->chroma_format_idc = get_ue_golomb_31(&h->gb); |
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| 353 | if (sps->chroma_format_idc > 3U) { |
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| 354 | avpriv_request_sample(h->avctx, "chroma_format_idc %u", |
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| 355 | sps->chroma_format_idc); |
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| 356 | goto fail; |
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| 357 | } else if (sps->chroma_format_idc == 3) { |
||
| 358 | sps->residual_color_transform_flag = get_bits1(&h->gb); |
||
| 359 | if (sps->residual_color_transform_flag) { |
||
| 360 | av_log(h->avctx, AV_LOG_ERROR, "separate color planes are not supported\n"); |
||
| 361 | goto fail; |
||
| 362 | } |
||
| 363 | } |
||
| 364 | sps->bit_depth_luma = get_ue_golomb(&h->gb) + 8; |
||
| 365 | sps->bit_depth_chroma = get_ue_golomb(&h->gb) + 8; |
||
| 366 | if (sps->bit_depth_chroma != sps->bit_depth_luma) { |
||
| 367 | avpriv_request_sample(h->avctx, |
||
| 368 | "Different chroma and luma bit depth"); |
||
| 369 | goto fail; |
||
| 370 | } |
||
| 371 | if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 || |
||
| 372 | sps->bit_depth_chroma < 8 || sps->bit_depth_chroma > 14) { |
||
| 373 | av_log(h->avctx, AV_LOG_ERROR, "illegal bit depth value (%d, %d)\n", |
||
| 374 | sps->bit_depth_luma, sps->bit_depth_chroma); |
||
| 375 | goto fail; |
||
| 376 | } |
||
| 377 | sps->transform_bypass = get_bits1(&h->gb); |
||
| 378 | decode_scaling_matrices(h, sps, NULL, 1, |
||
| 379 | sps->scaling_matrix4, sps->scaling_matrix8); |
||
| 380 | } else { |
||
| 381 | sps->chroma_format_idc = 1; |
||
| 382 | sps->bit_depth_luma = 8; |
||
| 383 | sps->bit_depth_chroma = 8; |
||
| 384 | } |
||
| 385 | |||
| 386 | log2_max_frame_num_minus4 = get_ue_golomb(&h->gb); |
||
| 387 | if (log2_max_frame_num_minus4 < MIN_LOG2_MAX_FRAME_NUM - 4 || |
||
| 388 | log2_max_frame_num_minus4 > MAX_LOG2_MAX_FRAME_NUM - 4) { |
||
| 389 | av_log(h->avctx, AV_LOG_ERROR, |
||
| 390 | "log2_max_frame_num_minus4 out of range (0-12): %d\n", |
||
| 391 | log2_max_frame_num_minus4); |
||
| 392 | goto fail; |
||
| 393 | } |
||
| 394 | sps->log2_max_frame_num = log2_max_frame_num_minus4 + 4; |
||
| 395 | |||
| 396 | sps->poc_type = get_ue_golomb_31(&h->gb); |
||
| 397 | |||
| 398 | if (sps->poc_type == 0) { // FIXME #define |
||
| 399 | unsigned t = get_ue_golomb(&h->gb); |
||
| 400 | if (t>12) { |
||
| 401 | av_log(h->avctx, AV_LOG_ERROR, "log2_max_poc_lsb (%d) is out of range\n", t); |
||
| 402 | goto fail; |
||
| 403 | } |
||
| 404 | sps->log2_max_poc_lsb = t + 4; |
||
| 405 | } else if (sps->poc_type == 1) { // FIXME #define |
||
| 406 | sps->delta_pic_order_always_zero_flag = get_bits1(&h->gb); |
||
| 407 | sps->offset_for_non_ref_pic = get_se_golomb(&h->gb); |
||
| 408 | sps->offset_for_top_to_bottom_field = get_se_golomb(&h->gb); |
||
| 409 | sps->poc_cycle_length = get_ue_golomb(&h->gb); |
||
| 410 | |||
| 411 | if ((unsigned)sps->poc_cycle_length >= |
||
| 412 | FF_ARRAY_ELEMS(sps->offset_for_ref_frame)) { |
||
| 413 | av_log(h->avctx, AV_LOG_ERROR, |
||
| 414 | "poc_cycle_length overflow %d\n", sps->poc_cycle_length); |
||
| 415 | goto fail; |
||
| 416 | } |
||
| 417 | |||
| 418 | for (i = 0; i < sps->poc_cycle_length; i++) |
||
| 419 | sps->offset_for_ref_frame[i] = get_se_golomb(&h->gb); |
||
| 420 | } else if (sps->poc_type != 2) { |
||
| 421 | av_log(h->avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type); |
||
| 422 | goto fail; |
||
| 423 | } |
||
| 424 | |||
| 425 | sps->ref_frame_count = get_ue_golomb_31(&h->gb); |
||
| 426 | if (h->avctx->codec_tag == MKTAG('S', 'M', 'V', '2')) |
||
| 427 | sps->ref_frame_count = FFMAX(2, sps->ref_frame_count); |
||
| 428 | if (sps->ref_frame_count > H264_MAX_PICTURE_COUNT - 2 || |
||
| 429 | sps->ref_frame_count > 16U) { |
||
| 430 | av_log(h->avctx, AV_LOG_ERROR, |
||
| 431 | "too many reference frames %d\n", sps->ref_frame_count); |
||
| 432 | goto fail; |
||
| 433 | } |
||
| 434 | sps->gaps_in_frame_num_allowed_flag = get_bits1(&h->gb); |
||
| 435 | sps->mb_width = get_ue_golomb(&h->gb) + 1; |
||
| 436 | sps->mb_height = get_ue_golomb(&h->gb) + 1; |
||
| 437 | if ((unsigned)sps->mb_width >= INT_MAX / 16 || |
||
| 438 | (unsigned)sps->mb_height >= INT_MAX / 16 || |
||
| 439 | av_image_check_size(16 * sps->mb_width, |
||
| 440 | 16 * sps->mb_height, 0, h->avctx)) { |
||
| 441 | av_log(h->avctx, AV_LOG_ERROR, "mb_width/height overflow\n"); |
||
| 442 | goto fail; |
||
| 443 | } |
||
| 444 | |||
| 445 | sps->frame_mbs_only_flag = get_bits1(&h->gb); |
||
| 446 | if (!sps->frame_mbs_only_flag) |
||
| 447 | sps->mb_aff = get_bits1(&h->gb); |
||
| 448 | else |
||
| 449 | sps->mb_aff = 0; |
||
| 450 | |||
| 451 | sps->direct_8x8_inference_flag = get_bits1(&h->gb); |
||
| 452 | |||
| 453 | #ifndef ALLOW_INTERLACE |
||
| 454 | if (sps->mb_aff) |
||
| 455 | av_log(h->avctx, AV_LOG_ERROR, |
||
| 456 | "MBAFF support not included; enable it at compile-time.\n"); |
||
| 457 | #endif |
||
| 458 | sps->crop = get_bits1(&h->gb); |
||
| 459 | if (sps->crop) { |
||
| 460 | unsigned int crop_left = get_ue_golomb(&h->gb); |
||
| 461 | unsigned int crop_right = get_ue_golomb(&h->gb); |
||
| 462 | unsigned int crop_top = get_ue_golomb(&h->gb); |
||
| 463 | unsigned int crop_bottom = get_ue_golomb(&h->gb); |
||
| 464 | int width = 16 * sps->mb_width; |
||
| 465 | int height = 16 * sps->mb_height * (2 - sps->frame_mbs_only_flag); |
||
| 466 | |||
| 467 | if (h->avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) { |
||
| 468 | av_log(h->avctx, AV_LOG_DEBUG, "discarding sps cropping, original " |
||
| 469 | "values are l:%d r:%d t:%d b:%d\n", |
||
| 470 | crop_left, crop_right, crop_top, crop_bottom); |
||
| 471 | |||
| 472 | sps->crop_left = |
||
| 473 | sps->crop_right = |
||
| 474 | sps->crop_top = |
||
| 475 | sps->crop_bottom = 0; |
||
| 476 | } else { |
||
| 477 | int vsub = (sps->chroma_format_idc == 1) ? 1 : 0; |
||
| 478 | int hsub = (sps->chroma_format_idc == 1 || |
||
| 479 | sps->chroma_format_idc == 2) ? 1 : 0; |
||
| 480 | int step_x = 1 << hsub; |
||
| 481 | int step_y = (2 - sps->frame_mbs_only_flag) << vsub; |
||
| 482 | |||
| 483 | if (crop_left & (0x1F >> (sps->bit_depth_luma > 8)) && |
||
| 484 | !(h->avctx->flags & AV_CODEC_FLAG_UNALIGNED)) { |
||
| 485 | crop_left &= ~(0x1F >> (sps->bit_depth_luma > 8)); |
||
| 486 | av_log(h->avctx, AV_LOG_WARNING, |
||
| 487 | "Reducing left cropping to %d " |
||
| 488 | "chroma samples to preserve alignment.\n", |
||
| 489 | crop_left); |
||
| 490 | } |
||
| 491 | |||
| 492 | if (crop_left > (unsigned)INT_MAX / 4 / step_x || |
||
| 493 | crop_right > (unsigned)INT_MAX / 4 / step_x || |
||
| 494 | crop_top > (unsigned)INT_MAX / 4 / step_y || |
||
| 495 | crop_bottom> (unsigned)INT_MAX / 4 / step_y || |
||
| 496 | (crop_left + crop_right ) * step_x >= width || |
||
| 497 | (crop_top + crop_bottom) * step_y >= height |
||
| 498 | ) { |
||
| 499 | av_log(h->avctx, AV_LOG_ERROR, "crop values invalid %d %d %d %d / %d %d\n", crop_left, crop_right, crop_top, crop_bottom, width, height); |
||
| 500 | goto fail; |
||
| 501 | } |
||
| 502 | |||
| 503 | sps->crop_left = crop_left * step_x; |
||
| 504 | sps->crop_right = crop_right * step_x; |
||
| 505 | sps->crop_top = crop_top * step_y; |
||
| 506 | sps->crop_bottom = crop_bottom * step_y; |
||
| 507 | } |
||
| 508 | } else { |
||
| 509 | sps->crop_left = |
||
| 510 | sps->crop_right = |
||
| 511 | sps->crop_top = |
||
| 512 | sps->crop_bottom = |
||
| 513 | sps->crop = 0; |
||
| 514 | } |
||
| 515 | |||
| 516 | sps->vui_parameters_present_flag = get_bits1(&h->gb); |
||
| 517 | if (sps->vui_parameters_present_flag) { |
||
| 518 | int ret = decode_vui_parameters(h, sps); |
||
| 519 | if (ret < 0) |
||
| 520 | goto fail; |
||
| 521 | } |
||
| 522 | |||
| 523 | if (get_bits_left(&h->gb) < 0) { |
||
| 524 | av_log(h->avctx, ignore_truncation ? AV_LOG_WARNING : AV_LOG_ERROR, |
||
| 525 | "Overread %s by %d bits\n", sps->vui_parameters_present_flag ? "VUI" : "SPS", -get_bits_left(&h->gb)); |
||
| 526 | if (!ignore_truncation) |
||
| 527 | goto fail; |
||
| 528 | } |
||
| 529 | |||
| 530 | if (!sps->sar.den) |
||
| 531 | sps->sar.den = 1; |
||
| 532 | |||
| 533 | if (h->avctx->debug & FF_DEBUG_PICT_INFO) { |
||
| 534 | static const char csp[4][5] = { "Gray", "420", "422", "444" }; |
||
| 535 | av_log(h->avctx, AV_LOG_DEBUG, |
||
| 536 | "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%u/%u/%u/%u %s %s %"PRId32"/%"PRId32" b%d reo:%d\n", |
||
| 537 | sps_id, sps->profile_idc, sps->level_idc, |
||
| 538 | sps->poc_type, |
||
| 539 | sps->ref_frame_count, |
||
| 540 | sps->mb_width, sps->mb_height, |
||
| 541 | sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"), |
||
| 542 | sps->direct_8x8_inference_flag ? "8B8" : "", |
||
| 543 | sps->crop_left, sps->crop_right, |
||
| 544 | sps->crop_top, sps->crop_bottom, |
||
| 545 | sps->vui_parameters_present_flag ? "VUI" : "", |
||
| 546 | csp[sps->chroma_format_idc], |
||
| 547 | sps->timing_info_present_flag ? sps->num_units_in_tick : 0, |
||
| 548 | sps->timing_info_present_flag ? sps->time_scale : 0, |
||
| 549 | sps->bit_depth_luma, |
||
| 550 | sps->bitstream_restriction_flag ? sps->num_reorder_frames : -1 |
||
| 551 | ); |
||
| 552 | } |
||
| 553 | sps->new = 1; |
||
| 554 | |||
| 555 | av_free(h->sps_buffers[sps_id]); |
||
| 556 | h->sps_buffers[sps_id] = sps; |
||
| 557 | |||
| 558 | return 0; |
||
| 559 | |||
| 560 | fail: |
||
| 561 | av_free(sps); |
||
| 562 | return AVERROR_INVALIDDATA; |
||
| 563 | } |
||
| 564 | |||
| 565 | static void build_qp_table(PPS *pps, int t, int index, const int depth) |
||
| 566 | { |
||
| 567 | int i; |
||
| 568 | const int max_qp = 51 + 6 * (depth - 8); |
||
| 569 | for (i = 0; i < max_qp + 1; i++) |
||
| 570 | pps->chroma_qp_table[t][i] = |
||
| 571 | ff_h264_chroma_qp[depth - 8][av_clip(i + index, 0, max_qp)]; |
||
| 572 | } |
||
| 573 | |||
| 574 | static int more_rbsp_data_in_pps(H264Context *h, PPS *pps) |
||
| 575 | { |
||
| 576 | const SPS *sps = h->sps_buffers[pps->sps_id]; |
||
| 577 | int profile_idc = sps->profile_idc; |
||
| 578 | |||
| 579 | if ((profile_idc == 66 || profile_idc == 77 || |
||
| 580 | profile_idc == 88) && (sps->constraint_set_flags & 7)) { |
||
| 581 | av_log(h->avctx, AV_LOG_VERBOSE, |
||
| 582 | "Current profile doesn't provide more RBSP data in PPS, skipping\n"); |
||
| 583 | return 0; |
||
| 584 | } |
||
| 585 | |||
| 586 | return 1; |
||
| 587 | } |
||
| 588 | |||
| 589 | int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length) |
||
| 590 | { |
||
| 591 | const SPS *sps; |
||
| 592 | unsigned int pps_id = get_ue_golomb(&h->gb); |
||
| 593 | PPS *pps; |
||
| 594 | int qp_bd_offset; |
||
| 595 | int bits_left; |
||
| 596 | int ret; |
||
| 597 | |||
| 598 | if (pps_id >= MAX_PPS_COUNT) { |
||
| 599 | av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", pps_id); |
||
| 600 | return AVERROR_INVALIDDATA; |
||
| 601 | } |
||
| 602 | |||
| 603 | pps = av_mallocz(sizeof(PPS)); |
||
| 604 | if (!pps) |
||
| 605 | return AVERROR(ENOMEM); |
||
| 606 | pps->sps_id = get_ue_golomb_31(&h->gb); |
||
| 607 | if ((unsigned)pps->sps_id >= MAX_SPS_COUNT || |
||
| 608 | !h->sps_buffers[pps->sps_id]) { |
||
| 609 | av_log(h->avctx, AV_LOG_ERROR, "sps_id %u out of range\n", pps->sps_id); |
||
| 610 | ret = AVERROR_INVALIDDATA; |
||
| 611 | goto fail; |
||
| 612 | } |
||
| 613 | sps = h->sps_buffers[pps->sps_id]; |
||
| 614 | if (sps->bit_depth_luma > 14) { |
||
| 615 | av_log(h->avctx, AV_LOG_ERROR, |
||
| 616 | "Invalid luma bit depth=%d\n", |
||
| 617 | sps->bit_depth_luma); |
||
| 618 | ret = AVERROR_INVALIDDATA; |
||
| 619 | goto fail; |
||
| 620 | } else if (sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13) { |
||
| 621 | av_log(h->avctx, AV_LOG_ERROR, |
||
| 622 | "Unimplemented luma bit depth=%d\n", |
||
| 623 | sps->bit_depth_luma); |
||
| 624 | ret = AVERROR_PATCHWELCOME; |
||
| 625 | goto fail; |
||
| 626 | } |
||
| 627 | |||
| 628 | pps->cabac = get_bits1(&h->gb); |
||
| 629 | pps->pic_order_present = get_bits1(&h->gb); |
||
| 630 | pps->slice_group_count = get_ue_golomb(&h->gb) + 1; |
||
| 631 | if (pps->slice_group_count > 1) { |
||
| 632 | pps->mb_slice_group_map_type = get_ue_golomb(&h->gb); |
||
| 633 | av_log(h->avctx, AV_LOG_ERROR, "FMO not supported\n"); |
||
| 634 | switch (pps->mb_slice_group_map_type) { |
||
| 635 | case 0: |
||
| 636 | #if 0 |
||
| 637 | | for (i = 0; i <= num_slice_groups_minus1; i++) | | | |
||
| 638 | | run_length[i] |1 |ue(v) | |
||
| 639 | #endif |
||
| 640 | break; |
||
| 641 | case 2: |
||
| 642 | #if 0 |
||
| 643 | | for (i = 0; i < num_slice_groups_minus1; i++) { | | | |
||
| 644 | | top_left_mb[i] |1 |ue(v) | |
||
| 645 | | bottom_right_mb[i] |1 |ue(v) | |
||
| 646 | | } | | | |
||
| 647 | #endif |
||
| 648 | break; |
||
| 649 | case 3: |
||
| 650 | case 4: |
||
| 651 | case 5: |
||
| 652 | #if 0 |
||
| 653 | | slice_group_change_direction_flag |1 |u(1) | |
||
| 654 | | slice_group_change_rate_minus1 |1 |ue(v) | |
||
| 655 | #endif |
||
| 656 | break; |
||
| 657 | case 6: |
||
| 658 | #if 0 |
||
| 659 | | slice_group_id_cnt_minus1 |1 |ue(v) | |
||
| 660 | | for (i = 0; i <= slice_group_id_cnt_minus1; i++)| | | |
||
| 661 | | slice_group_id[i] |1 |u(v) | |
||
| 662 | #endif |
||
| 663 | break; |
||
| 664 | } |
||
| 665 | } |
||
| 666 | pps->ref_count[0] = get_ue_golomb(&h->gb) + 1; |
||
| 667 | pps->ref_count[1] = get_ue_golomb(&h->gb) + 1; |
||
| 668 | if (pps->ref_count[0] - 1 > 32 - 1 || pps->ref_count[1] - 1 > 32 - 1) { |
||
| 669 | av_log(h->avctx, AV_LOG_ERROR, "reference overflow (pps)\n"); |
||
| 670 | ret = AVERROR_INVALIDDATA; |
||
| 671 | goto fail; |
||
| 672 | } |
||
| 673 | |||
| 674 | qp_bd_offset = 6 * (sps->bit_depth_luma - 8); |
||
| 675 | |||
| 676 | pps->weighted_pred = get_bits1(&h->gb); |
||
| 677 | pps->weighted_bipred_idc = get_bits(&h->gb, 2); |
||
| 678 | pps->init_qp = get_se_golomb(&h->gb) + 26 + qp_bd_offset; |
||
| 679 | pps->init_qs = get_se_golomb(&h->gb) + 26 + qp_bd_offset; |
||
| 680 | pps->chroma_qp_index_offset[0] = get_se_golomb(&h->gb); |
||
| 681 | pps->deblocking_filter_parameters_present = get_bits1(&h->gb); |
||
| 682 | pps->constrained_intra_pred = get_bits1(&h->gb); |
||
| 683 | pps->redundant_pic_cnt_present = get_bits1(&h->gb); |
||
| 684 | |||
| 685 | pps->transform_8x8_mode = 0; |
||
| 686 | // contents of sps/pps can change even if id doesn't, so reinit |
||
| 687 | h->dequant_coeff_pps = -1; |
||
| 688 | memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, |
||
| 689 | sizeof(pps->scaling_matrix4)); |
||
| 690 | memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, |
||
| 691 | sizeof(pps->scaling_matrix8)); |
||
| 692 | |||
| 693 | bits_left = bit_length - get_bits_count(&h->gb); |
||
| 694 | if (bits_left > 0 && more_rbsp_data_in_pps(h, pps)) { |
||
| 695 | pps->transform_8x8_mode = get_bits1(&h->gb); |
||
| 696 | decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, |
||
| 697 | pps->scaling_matrix4, pps->scaling_matrix8); |
||
| 698 | // second_chroma_qp_index_offset |
||
| 699 | pps->chroma_qp_index_offset[1] = get_se_golomb(&h->gb); |
||
| 700 | } else { |
||
| 701 | pps->chroma_qp_index_offset[1] = pps->chroma_qp_index_offset[0]; |
||
| 702 | } |
||
| 703 | |||
| 704 | build_qp_table(pps, 0, pps->chroma_qp_index_offset[0], |
||
| 705 | sps->bit_depth_luma); |
||
| 706 | build_qp_table(pps, 1, pps->chroma_qp_index_offset[1], |
||
| 707 | sps->bit_depth_luma); |
||
| 708 | if (pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1]) |
||
| 709 | pps->chroma_qp_diff = 1; |
||
| 710 | |||
| 711 | if (h->avctx->debug & FF_DEBUG_PICT_INFO) { |
||
| 712 | av_log(h->avctx, AV_LOG_DEBUG, |
||
| 713 | "pps:%u sps:%u %s slice_groups:%d ref:%u/%u %s qp:%d/%d/%d/%d %s %s %s %s\n", |
||
| 714 | pps_id, pps->sps_id, |
||
| 715 | pps->cabac ? "CABAC" : "CAVLC", |
||
| 716 | pps->slice_group_count, |
||
| 717 | pps->ref_count[0], pps->ref_count[1], |
||
| 718 | pps->weighted_pred ? "weighted" : "", |
||
| 719 | pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1], |
||
| 720 | pps->deblocking_filter_parameters_present ? "LPAR" : "", |
||
| 721 | pps->constrained_intra_pred ? "CONSTR" : "", |
||
| 722 | pps->redundant_pic_cnt_present ? "REDU" : "", |
||
| 723 | pps->transform_8x8_mode ? "8x8DCT" : ""); |
||
| 724 | } |
||
| 725 | |||
| 726 | av_free(h->pps_buffers[pps_id]); |
||
| 727 | h->pps_buffers[pps_id] = pps; |
||
| 728 | return 0; |
||
| 729 | |||
| 730 | fail: |
||
| 731 | av_free(pps); |
||
| 732 | return ret; |
||
| 733 | } |