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annotate src/libmlk-core/core/sound.c @ 343:9eb25198d706

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js: add sound bindings
author David Demelier <markand@malikania.fr>
date Sat, 16 Oct 2021 22:17:09 +0200
parents 8f9937403749
children 12367bfc2df6
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1 /*
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2 * sound.c -- sound support
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3 *
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4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20 #include <stdio.h>
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21
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22 #include <SDL_mixer.h>
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23
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24 #include "error.h"
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25 #include "sound.h"
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26 #include "vfs.h"
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27 #include "vfs_p.h"
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29 int
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30 sound_open(struct sound *snd, const char *path)
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31 {
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32 assert(snd);
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33 assert(path);
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34
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35 if (!(snd->handle = Mix_LoadWAV(path)))
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36 return errorf("%s", SDL_GetError());
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37
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38 return 0;
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39 }
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41 int
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42 sound_openmem(struct sound *snd, const void *buffer, size_t buffersz)
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43 {
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44 assert(snd);
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45 assert(buffer);
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46
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47 SDL_RWops *ops;
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48
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49 if (!(ops = SDL_RWFromConstMem(buffer, buffersz)) ||
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50 !(snd->handle = Mix_LoadWAV_RW(ops, 1)))
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51 return errorf("%s", SDL_GetError());
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52
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53 return 0;
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54 }
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55
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56 int
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57 sound_openvfs(struct sound *snd, struct vfs_file *file)
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58 {
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59 assert(snd);
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60 assert(vfs_file_ok(file));
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61
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62 SDL_RWops *ops;
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63
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64 if (!(ops = vfs_to_rw(file)))
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65 return -1;
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66 if (!(snd->handle = Mix_LoadWAV_RW(ops, 1)))
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67 return errorf("%s", SDL_GetError());
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68
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69 return 0;
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70 }
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71
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72 int
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73 sound_ok(const struct sound *snd)
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74 {
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75 return snd && snd->handle;
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76 }
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77
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78 int
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79 sound_play(struct sound *snd, int channel, unsigned int fadein)
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80 {
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81 assert(sound_ok(snd));
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83 int ret;
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84
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85 if (fadein > 0)
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86 ret = Mix_FadeInChannel(channel, snd->handle, 0, fadein);
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87 else
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88 ret = Mix_PlayChannel(channel, snd->handle, 0);
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89
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90 if (ret < 0)
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91 return errorf("%s", SDL_GetError());
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92
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93 snd->channel = channel;
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94
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95 return 0;
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96 }
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97
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98 void
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99 sound_pause(struct sound *snd)
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100 {
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101 Mix_Pause(snd ? snd->channel : -1);
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102 }
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104 void
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105 sound_resume(struct sound *snd)
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106 {
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107 Mix_Resume(snd ? snd->channel : -1);
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108 }
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110 void
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111 sound_stop(struct sound *snd, unsigned int fadeout)
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112 {
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113 if (fadeout > 0)
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114 Mix_FadeOutChannel(snd ? snd->channel : -1, fadeout);
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115 else
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116 Mix_HaltChannel(snd ? snd->channel : -1);
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117 }
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119 void
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120 sound_finish(struct sound *snd)
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121 {
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122 assert(snd);
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123
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124 if (snd->handle) {
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125 Mix_HaltChannel(snd->channel);
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126 Mix_FreeChunk(snd->handle);
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127 }
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128
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129 memset(snd, 0, sizeof (*snd));
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130 }