| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * SAUCE header parser | ||
| 3 | * Copyright (c) 2010 Peter Ross <pross@xvid.org> | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * SAUCE header parser | ||
| 25 | */ | ||
| 26 | |||
| 27 | #include "libavutil/dict.h" | ||
| 28 | #include "libavutil/mem.h" | ||
| 29 | #include "avformat.h" | ||
| 30 | #include "sauce.h" | ||
| 31 | |||
| 32 | 2 | int ff_sauce_read(AVFormatContext *avctx, uint64_t *fsize, int *got_width, int get_height) | |
| 33 | { | ||
| 34 | 2 | AVIOContext *pb = avctx->pb; | |
| 35 | char buf[36]; | ||
| 36 | int datatype, filetype, t1, t2, nb_comments; | ||
| 37 | 2 | uint64_t start_pos = avio_size(pb) - 128; | |
| 38 | |||
| 39 | 2 | avio_seek(pb, start_pos, SEEK_SET); | |
| 40 |
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2 | if (avio_read(pb, buf, 7) != 7) |
| 41 | ✗ | return -1; | |
| 42 |
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2 | if (memcmp(buf, "SAUCE00", 7)) |
| 43 | 1 | return -1; | |
| 44 | |||
| 45 | #define GET_SAUCE_META(name,size) \ | ||
| 46 | if (avio_read(pb, buf, size) == size && buf[0]) { \ | ||
| 47 | buf[size] = 0; \ | ||
| 48 | av_dict_set(&avctx->metadata, name, buf, 0); \ | ||
| 49 | } | ||
| 50 | |||
| 51 |
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1 | GET_SAUCE_META("title", 35) |
| 52 |
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1 | GET_SAUCE_META("artist", 20) |
| 53 |
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1 | GET_SAUCE_META("publisher", 20) |
| 54 |
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1 | GET_SAUCE_META("date", 8) |
| 55 | 1 | avio_skip(pb, 4); | |
| 56 | 1 | datatype = avio_r8(pb); | |
| 57 | 1 | filetype = avio_r8(pb); | |
| 58 | 1 | t1 = avio_rl16(pb); | |
| 59 | 1 | t2 = avio_rl16(pb); | |
| 60 | 1 | nb_comments = avio_r8(pb); | |
| 61 | 1 | avio_skip(pb, 1); /* flags */ | |
| 62 | 1 | avio_skip(pb, 4); | |
| 63 |
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1 | GET_SAUCE_META("encoder", 22); |
| 64 | |||
| 65 |
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1 | if (got_width && datatype && filetype) { |
| 66 | ✗ | if ((datatype == 1 && filetype <=2) || (datatype == 5 && filetype == 255) || datatype == 6) { | |
| 67 | ✗ | if (t1) { | |
| 68 | ✗ | avctx->streams[0]->codecpar->width = t1<<3; | |
| 69 | ✗ | *got_width = 1; | |
| 70 | } | ||
| 71 | ✗ | if (get_height && t2) | |
| 72 | ✗ | avctx->streams[0]->codecpar->height = t2<<4; | |
| 73 | ✗ | } else if (datatype == 5) { | |
| 74 | ✗ | if (filetype) { | |
| 75 | ✗ | avctx->streams[0]->codecpar->width = (filetype == 1 ? t1 : filetype) << 4; | |
| 76 | ✗ | *got_width = 1; | |
| 77 | } | ||
| 78 | ✗ | if (get_height && t2) | |
| 79 | ✗ | avctx->streams[0]->codecpar->height = t2<<4; | |
| 80 | } | ||
| 81 | } | ||
| 82 | |||
| 83 | 1 | *fsize -= 128; | |
| 84 | |||
| 85 |
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1 | if (nb_comments > 0) { |
| 86 | 1 | avio_seek(pb, start_pos - 64*nb_comments - 5, SEEK_SET); | |
| 87 |
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1 | if (avio_read(pb, buf, 5) == 5 && !memcmp(buf, "COMNT", 5)) { |
| 88 | int i; | ||
| 89 | ✗ | char *str = av_malloc(65*nb_comments + 1); | |
| 90 | ✗ | *fsize -= 64*nb_comments + 5; | |
| 91 | ✗ | if (!str) | |
| 92 | ✗ | return 0; | |
| 93 | ✗ | for (i = 0; i < nb_comments; i++) { | |
| 94 | ✗ | if (avio_read(pb, str + 65*i, 64) != 64) | |
| 95 | ✗ | break; | |
| 96 | ✗ | str[65*i + 64] = '\n'; | |
| 97 | } | ||
| 98 | ✗ | str[65*i] = 0; | |
| 99 | ✗ | av_dict_set(&avctx->metadata, "comment", str, AV_DICT_DONT_STRDUP_VAL); | |
| 100 | } | ||
| 101 | } | ||
| 102 | |||
| 103 | 1 | return 0; | |
| 104 | } | ||
| 105 |