HelenOS sources

log_error         164 uspace/srv/audio/hound/audio_device.c 			log_error("Failed to get device buffer: %s",
log_error         190 uspace/srv/audio/hound/audio_device.c 			log_error("Failed to start playback: %s",
log_error         202 uspace/srv/audio/hound/audio_device.c 			log_error("Failed to stop playback: %s",
log_error         226 uspace/srv/audio/hound/audio_device.c 			log_error("Failed to get device buffer: %s",
log_error         240 uspace/srv/audio/hound/audio_device.c 			log_error("Failed to start recording: %s",
log_error         250 uspace/srv/audio/hound/audio_device.c 			log_error("Failed to start recording: %s",
log_error         295 uspace/srv/audio/hound/audio_device.c 				log_error("Failed to release buffer: %s",
log_error         305 uspace/srv/audio/hound/audio_device.c 				log_error("Failed to release buffer: %s",
log_error         466 uspace/srv/audio/hound/hound_ctx.c 			log_error("Failed to push data to stream: %s",
HelenOS homepage, sources at GitHub