Disable ALSA's resampler when no specific output rate is requested

1 files changed, 8 insertions, 0 deletions

diff --git a/Alc/alsa.c b/Alc/alsa.c
index b56d0537..bf3afc83 100644
--- a/Alc/alsa.c
+++ b/Alc/alsa.c
@@ -67,6 +67,7 @@ MAKE_FUNC(snd_pcm_hw_params_set_channels);
 MAKE_FUNC(snd_pcm_hw_params_set_periods_near);
 MAKE_FUNC(snd_pcm_hw_params_set_rate_near);
 MAKE_FUNC(snd_pcm_hw_params_set_rate);
+MAKE_FUNC(snd_pcm_hw_params_set_rate_resample);
 MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_near);
 MAKE_FUNC(snd_pcm_hw_params_set_period_size_near);
 MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_min);
@@ -161,6 +162,7 @@ LOAD_FUNC(snd_pcm_hw_params_set_channels);
 LOAD_FUNC(snd_pcm_hw_params_set_periods_near);
 LOAD_FUNC(snd_pcm_hw_params_set_rate_near);
 LOAD_FUNC(snd_pcm_hw_params_set_rate);
+LOAD_FUNC(snd_pcm_hw_params_set_rate_resample);
 LOAD_FUNC(snd_pcm_hw_params_set_buffer_size_near);
 LOAD_FUNC(snd_pcm_hw_params_set_buffer_size_min);
 LOAD_FUNC(snd_pcm_hw_params_set_period_size_near);
@@ -615,6 +617,12 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
                 err = "set channels";
         }
     }
+    if(i >= 0 && !ConfigValueExists(NULL, "frequency") &&
+       (i=psnd_pcm_hw_params_set_rate_resample(data->pcmHandle, p, 0)) < 0)
+    {
+        AL_PRINT("Failed to disable ALSA resampler\n");
+        i = 0;
+    }
     /* set rate (implicitly constrains period/buffer parameters) */
     if(i >= 0 && (i=psnd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0)
         err = "set rate near";