Use larger sample buffer size for SDL audio.

2048 samples was not enough to keep up with 10 Hz updates at 22050.
Bump to 32768 samples per channel.

Also validate number of channels obtained.

1 files changed, 11 insertions, 3 deletions

diff --git a/src/unix/sdl/sound.c b/src/unix/sdl/sound.c
index af383c2..ad18099 100644
--- a/src/unix/sdl/sound.c
+++ b/src/unix/sdl/sound.c
@@ -103,13 +103,17 @@ static sndinitstat_t Init(void)
 
     if (obtained.format != AUDIO_S16LSB) {
         Com_EPrintf("SDL audio format %d unsupported.\n", obtained.format);
-        Shutdown();
-        return SIS_FAILURE;
+        goto fail;
+    }
+
+    if (obtained.channels != 1 && obtained.channels != 2) {
+        Com_EPrintf("SDL audio channels %d unsupported.\n", obtained.channels);
+        goto fail;
     }
 
     dma.speed = obtained.freq;
     dma.channels = obtained.channels;
-    dma.samples = 2048 * obtained.channels;
+    dma.samples = 0x8000 * obtained.channels;
     dma.submission_chunk = 1;
     dma.samplebits = 16;
     dma.buffer = Z_Mallocz(dma.samples * 2);
@@ -121,6 +125,10 @@ static sndinitstat_t Init(void)
     SDL_PauseAudio(0);
 
     return SIS_SUCCESS;
+
+fail:
+    Shutdown();
+    return SIS_FAILURE;
 }
 
 static void BeginPainting(void)