107 lines
2.0 KiB
C
107 lines
2.0 KiB
C
#include <sfx.h>
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#include <sfx/port.h>
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#include <header.h>
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#include <SDL.h>
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#include <SDL_mixer.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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static bool mixer_init;
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void sfx_free(struct sound *const s)
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{
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if (s && s->chunk)
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Mix_FreeChunk(s->chunk);
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}
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int sfx_play(const struct sound *const s)
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{
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if (mixer_init && Mix_PlayChannel(-1, s->chunk, s->loop ? -1 : 0) < 0)
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return -1;
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return 0;
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}
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static int load_data(struct sound *const s, FILE *const f)
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{
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int ret = -1;
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SDL_RWops *const ops = SDL_RWFromFP(f, 0);
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if (!ops)
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{
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fprintf(stderr, "SDL_RWFromFP: %s\n", SDL_GetError());
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goto end;
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}
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else if (!(s->chunk = Mix_LoadWAV_RW(ops, 0)))
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{
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fprintf(stderr, "Mix_LoadWAV_RW: %s\n", SDL_GetError());
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goto end;
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}
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ret = 0;
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end:
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SDL_FreeRW(ops);
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return ret;
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}
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static int load_header(struct sound *const s, FILE *const f)
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{
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if (header_load_bool(f, "loop", &s->loop))
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return -1;
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return 0;
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}
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int sfx_sound_from_fp(struct sound *const s, FILE *const f, const size_t sz)
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{
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if (mixer_init)
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{
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if (load_header(s, f) || load_data(s, f))
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return -1;
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}
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else
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/* Skip the file. */
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fseek(f, sz, SEEK_CUR);
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return 0;
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}
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void sfx_deinit(void)
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{
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if (mixer_init)
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Mix_CloseAudio();
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if (SDL_WasInit(SDL_INIT_AUDIO) & SDL_INIT_AUDIO)
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SDL_QuitSubSystem(SDL_INIT_AUDIO);
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}
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int sfx_init(void)
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{
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enum {CHUNK_SZ = 4096};
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/* Some older systems might not support sound at all. */
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if (SDL_InitSubSystem(SDL_INIT_AUDIO))
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{
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fprintf(stderr, "SDL_InitSubSystem: %s\n", SDL_GetError());
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goto failure;
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}
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if (Mix_OpenAudio(MIX_DEFAULT_FREQUENCY,
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MIX_DEFAULT_FORMAT, MIX_DEFAULT_CHANNELS, CHUNK_SZ))
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{
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fprintf(stderr, "Mix_OpenAudio: %s\n", SDL_GetError());
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goto failure;
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}
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else
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mixer_init = true;
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return 0;
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failure:
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sfx_deinit();
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fprintf(stderr, "Running without audio support\n");
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return 0;
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}
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