All symbols starting with `c' in src/sd-sdl

• callback_done_sem src/sd-sdl/sound.c:33
• callback_sndbuf src/sd-sdl/sound.c:27
• check_sound_buffers src/sd-sdl/sound.h:14
• close_sound src/sd-sdl/sound.c:177
• closing_sound src/sd-sdl/sound.c:37