Mercurial > repos > blastem
annotate wave.c @ 620:9d6fed6501ba
Fix handling of code writes for Z80 core. This seems to get things close to being back to where they were before the big refactor that broke the Z80 core. Some problems remain. Notably the sound driver in Sonic 2 is still quite broken.
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 29 Dec 2014 23:08:39 -0800 |
parents | 6e9d1a8c1b08 |
children | efc75ea79164 |
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1 /* |
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2 Copyright 2013 Michael Pavone |
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3 This file is part of BlastEm. |
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
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5 */ |
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6 #include "wave.h" |
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7 #include <stddef.h> |
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8 #include <string.h> |
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9 |
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10 int wave_init(FILE * f, uint32_t sample_rate, uint16_t bits_per_sample, uint16_t num_channels) |
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11 { |
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12 wave_header header; |
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13 memcpy(header.chunk.id, "RIFF", 4); |
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14 memcpy(header.chunk.format, "WAVE", 4); |
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15 header.chunk.size = 0; //This will be filled in later |
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16 memcpy(header.format_header.id, "fmt ", 4); |
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17 header.format_header.size = sizeof(wave_header) - (sizeof(header.chunk) + sizeof(header.data_header) + sizeof(header.format_header)); |
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18 header.audio_format = 1; |
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19 header.num_channels = num_channels; |
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20 header.sample_rate = sample_rate; |
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21 header.byte_rate = sample_rate * num_channels * (bits_per_sample/8); |
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22 header.block_align = num_channels * (bits_per_sample/8); |
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23 header.bits_per_sample = bits_per_sample; |
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24 memcpy(header.data_header.id, "data", 4); |
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25 header.data_header.size = 0;//This will be filled in later; |
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26 return fwrite(&header, 1, sizeof(header), f) == sizeof(header); |
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27 } |
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28 |
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29 int wave_finalize(FILE * f) |
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30 { |
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31 uint32_t size = ftell(f); |
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32 fseek(f, offsetof(wave_header, chunk.size), SEEK_SET); |
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33 size -= 8; |
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34 if (fwrite(&size, sizeof(size), 1, f) != 1) { |
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35 fclose(f); |
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36 return 0; |
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37 } |
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38 fseek(f, offsetof(wave_header, data_header.size), SEEK_SET); |
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39 size -= 36; |
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40 if (fwrite(&size, sizeof(size), 1, f) != 1) { |
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41 fclose(f); |
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42 return 0; |
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43 } |
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44 fclose(f); |
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45 return 1; |
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46 } |