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alsa: capture devices don't need a mixbuf allocated.

This commit is contained in:
Ryan C. Gordon 2016-08-03 01:00:30 -04:00
parent 3ed9b0f567
commit 38f4b68ca7
1 changed files with 8 additions and 6 deletions
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2
src/audio/alsa/SDL_alsa_audio.c
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@ -700,6 +700,7 @@ ALSA_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
SDL_CalculateAudioSpec(&this->spec); SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */ /* Allocate mixing buffer */
if (!iscapture) {
this->hidden->mixlen = this->spec.size; this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen); this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) { if (this->hidden->mixbuf == NULL) {
@ -707,6 +708,7 @@ ALSA_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
return SDL_OutOfMemory(); return SDL_OutOfMemory();
} }
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen); SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen);
}
/* Switch to blocking mode for playback */ /* Switch to blocking mode for playback */
ALSA_snd_pcm_nonblock(pcm_handle, 0); ALSA_snd_pcm_nonblock(pcm_handle, 0);