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| 1 /* | 1 /* |
| 2 * APE tag handling | 2 * APE tag handling |
| 3 * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> | 3 * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> |
| 4 * based upon libdemac from Dave Chapman. | 4 * based upon libdemac from Dave Chapman. |
| 5 * | 5 * |
| 6 * This file is part of FFmpeg. | 6 * This file is part of FFmpeg. |
| 7 * | 7 * |
| 8 * FFmpeg is free software; you can redistribute it and/or | 8 * FFmpeg is free software; you can redistribute it and/or |
| 9 * modify it under the terms of the GNU Lesser General Public | 9 * modify it under the terms of the GNU Lesser General Public |
| 10 * License as published by the Free Software Foundation; either | 10 * License as published by the Free Software Foundation; either |
| 11 * version 2.1 of the License, or (at your option) any later version. | 11 * version 2.1 of the License, or (at your option) any later version. |
| 12 * | 12 * |
| 13 * FFmpeg is distributed in the hope that it will be useful, | 13 * FFmpeg is distributed in the hope that it will be useful, |
| 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 * Lesser General Public License for more details. | 16 * Lesser General Public License for more details. |
| 17 * | 17 * |
| 18 * You should have received a copy of the GNU Lesser General Public | 18 * You should have received a copy of the GNU Lesser General Public |
| 19 * License along with FFmpeg; if not, write to the Free Software | 19 * License along with FFmpeg; if not, write to the Free Software |
| 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 */ | 21 */ |
| 22 | 22 |
| 23 #include "libavutil/intreadwrite.h" | 23 #include "libavutil/intreadwrite.h" |
| 24 #include "avformat.h" | 24 #include "avformat.h" |
| 25 #include "apetag.h" |
| 25 | 26 |
| 26 #define ENABLE_DEBUG 0 | 27 #define ENABLE_DEBUG 0 |
| 27 | 28 |
| 28 #define APE_TAG_VERSION 2000 | 29 #define APE_TAG_VERSION 2000 |
| 29 #define APE_TAG_FOOTER_BYTES 32 | 30 #define APE_TAG_FOOTER_BYTES 32 |
| 30 #define APE_TAG_FLAG_CONTAINS_HEADER (1 << 31) | 31 #define APE_TAG_FLAG_CONTAINS_HEADER (1 << 31) |
| 31 #define APE_TAG_FLAG_IS_HEADER (1 << 29) | 32 #define APE_TAG_FLAG_IS_HEADER (1 << 29) |
| 32 | 33 |
| 33 static int ape_tag_read_field(AVFormatContext *s) | 34 static int ape_tag_read_field(AVFormatContext *s) |
| 34 { | 35 { |
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| 102 if (val & APE_TAG_FLAG_IS_HEADER) { | 103 if (val & APE_TAG_FLAG_IS_HEADER) { |
| 103 av_log(s, AV_LOG_ERROR, "APE Tag is a header\n"); | 104 av_log(s, AV_LOG_ERROR, "APE Tag is a header\n"); |
| 104 return; | 105 return; |
| 105 } | 106 } |
| 106 | 107 |
| 107 url_fseek(pb, file_size - tag_bytes, SEEK_SET); | 108 url_fseek(pb, file_size - tag_bytes, SEEK_SET); |
| 108 | 109 |
| 109 for (i=0; i<fields; i++) | 110 for (i=0; i<fields; i++) |
| 110 if (ape_tag_read_field(s) < 0) break; | 111 if (ape_tag_read_field(s) < 0) break; |
| 111 } | 112 } |
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