92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/** @file
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Various utility functions handling file formats.
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Copyright (C) 2018 Christian Zuckschwerdt
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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*/
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#ifndef INCLUDE_FILEFORMAT_H_
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#define INCLUDE_FILEFORMAT_H_
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#include <stdint.h>
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#include <stdio.h>
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char const *file_basename(char const *path);
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/// a single handy number to define the file type.
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/// bitmask: RRRR LLLL WWWWWWWW 00CC 00FS
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enum file_type {
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// format bits
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F_UNSIGNED = 0 << 0,
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F_SIGNED = 1 << 0,
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F_INT = 0 << 1,
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F_FLOAT = 1 << 1,
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F_1CH = 1 << 4,
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F_2CH = 2 << 4,
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F_W8 = 8 << 8,
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F_W12 = 12 << 8,
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F_W16 = 16 << 8,
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F_W32 = 32 << 8,
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F_W64 = 64 << 8,
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// content types
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F_I = 1 << 16,
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F_Q = 2 << 16,
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F_AM = 3 << 16,
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F_FM = 4 << 16,
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F_IQ = F_I | F_Q << 4,
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F_LOGIC = 5 << 16,
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F_VCD = 6 << 16,
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F_OOK = 7 << 16,
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// format types
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F_U8 = F_1CH | F_UNSIGNED | F_INT | F_W8,
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F_S8 = F_1CH | F_SIGNED | F_INT | F_W8,
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F_CU8 = F_2CH | F_UNSIGNED | F_INT | F_W8,
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F_CS8 = F_2CH | F_SIGNED | F_INT | F_W8,
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F_U16 = F_1CH | F_UNSIGNED | F_INT | F_W16,
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F_S16 = F_1CH | F_SIGNED | F_INT | F_W16,
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F_CU16 = F_2CH | F_UNSIGNED | F_INT | F_W16,
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F_CS16 = F_2CH | F_SIGNED | F_INT | F_W16,
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F_U32 = F_1CH | F_UNSIGNED | F_INT | F_W32,
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F_S32 = F_1CH | F_SIGNED | F_INT | F_W32,
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F_CU32 = F_2CH | F_UNSIGNED | F_INT | F_W32,
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F_CS32 = F_2CH | F_SIGNED | F_INT | F_W32,
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F_F32 = F_1CH | F_SIGNED | F_FLOAT | F_W32,
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F_CF32 = F_2CH | F_SIGNED | F_FLOAT | F_W32,
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// compound types
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CU8_IQ = F_CU8 | F_IQ,
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S16_AM = F_S16 | F_AM,
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S16_FM = F_S16 | F_FM,
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CS16_IQ = F_CS16 | F_IQ,
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CF32_IQ = F_CF32 | F_IQ,
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F32_AM = F_F32 | F_AM,
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F32_FM = F_F32 | F_FM,
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F32_I = F_F32 | F_I,
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F32_Q = F_F32 | F_Q,
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U8_LOGIC = F_LOGIC | F_U8,
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VCD_LOGIC = F_VCD,
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PULSE_OOK = F_OOK,
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};
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typedef struct {
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uint32_t format;
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uint32_t raw_format;
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uint32_t center_frequency;
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uint32_t sample_rate;
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char const *spec;
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char const *path;
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FILE *file;
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} file_info_t;
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int parse_file_info(const char *filename, file_info_t *info);
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void check_read_file_info(file_info_t *info);
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void check_write_file_info(file_info_t *info);
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char const *file_info_string(file_info_t *info);
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#endif /* INCLUDE_FILEFORMAT_H_ */
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