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1 /* |
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2 * This file is part of Libav. |
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3 * |
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4 * Libav is free software; you can redistribute it and/or |
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5 * modify it under the terms of the GNU Lesser General Public |
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6 * License as published by the Free Software Foundation; either |
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7 * version 2.1 of the License, or (at your option) any later version. |
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8 * |
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9 * Libav is distributed in the hope that it will be useful, |
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 * Lesser General Public License for more details. |
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13 * |
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14 * You should have received a copy of the GNU Lesser General Public |
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15 * License along with Libav; if not, write to the Free Software |
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16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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17 */ |
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18 |
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19 #ifndef AVUTIL_FILE_H |
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20 #define AVUTIL_FILE_H |
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21 |
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22 #include <stdint.h> |
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23 |
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24 #include "avutil.h" |
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25 |
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26 /** |
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27 * @file |
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28 * Misc file utilities. |
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29 */ |
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30 |
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31 /** |
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32 * Read the file with name filename, and put its content in a newly |
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33 * allocated buffer or map it with mmap() when available. |
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34 * In case of success set *bufptr to the read or mmapped buffer, and |
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35 * *size to the size in bytes of the buffer in *bufptr. |
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36 * The returned buffer must be released with av_file_unmap(). |
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37 * |
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38 * @param log_offset loglevel offset used for logging |
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39 * @param log_ctx context used for logging |
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40 * @return a non negative number in case of success, a negative value |
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41 * corresponding to an AVERROR error code in case of failure |
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42 */ |
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43 int av_file_map(const char *filename, uint8_t **bufptr, size_t *size, |
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44 int log_offset, void *log_ctx); |
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45 |
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46 /** |
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47 * Unmap or free the buffer bufptr created by av_file_map(). |
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48 * |
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49 * @param size size in bytes of bufptr, must be the same as returned |
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50 * by av_file_map() |
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51 */ |
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52 void av_file_unmap(uint8_t *bufptr, size_t size); |
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53 |
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54 #endif /* AVUTIL_FILE_H */ |