# Use the ALSA OSS emulation driver.  Ok for games, not so much for rockbox.
#export SDL_AUDIODRIVER=dsp 



# The new salsa ALSA driver works better for rockbox on IZ2S
export SDL_AUDIODRIVER=alsa

# It requests a big buffer to give the ALSA driver plenty of data.
# This lets it get past system busy times without gaps in the audio.
# The new driver also waits for the buffer to fill a bit before playing.
# This avoids most of the jittery mess when rockbox first starts up.
# You can adjust/debug the parameters with these environment variables.

# Enable this if you want to print SDL ALSA debug info on stdout.
#export SDL_AUDIO_ALSA_DEBUG=1

# The default behavior is to ask for a 1000ms (1 second) ALSA buffer.
# The driver only gives a max of 32768 frames (3/4 secs @ 44.1KHz) though.
#export SDL_AUDIO_ALSA_SET_BUFFER_SIZE=1000

# By default wait for 500ms (.5 secs) in buffer before ALSA starts playing.
#export SDL_AUDIO_ALSA_SET_START_THRESH=500

# The default is to let the SDL app ask for the period size.
# Rockbox asks for 2048 frames, GMU wants 4096 frames per period.
# But the ALSA driver likes to pick 1024 frames with a big buffer.
#export SDL_AUDIO_ALSA_SET_PERIOD_SIZE=1024