diff oss_audio.c @ 0:c55ea9478c80

Hello Gensokyo!
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 21 May 2013 10:29:21 +0200
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new file mode 100644
--- /dev/null
+++ b/oss_audio.c
@@ -0,0 +1,46 @@
+#if !defined(WIN32) && !defined(WIN64)
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/soundcard.h>
+#include <sys/ioctl.h>
+
+int oss_audio_open(uint32_t oss_audio_rate, uint8_t nchannels)
+{
+    int afd = -1, tmp = 0;
+
+    /* open the sound device */
+    if ((afd = open("/dev/dsp", O_WRONLY, 0)) == -1)
+    {   /* Opening device failed */
+        return(-2);
+    }
+
+    tmp = AFMT_S16_NE;
+    /* set the sound driver audio format for playback */
+    if (ioctl(afd, SNDCTL_DSP_SETFMT, &tmp) == -1)
+    {   /* Fatal error */
+        goto err;
+    }
+
+    /* set the sound driver number of channels for playback */
+    tmp = (nchannels-1);
+    if (ioctl(afd, SNDCTL_DSP_STEREO, &tmp) == -1)
+    {   /* Fatal error */
+        goto err;
+    }
+
+    /* set the sound driver number playback rate */
+    tmp = oss_audio_rate;
+    if (ioctl(afd, SNDCTL_DSP_SPEED, &tmp) == -1)
+    { /* Fatal error */
+        goto err;
+    }
+
+    return afd;
+err:
+    close(afd);
+    return(-1);
+}
+#endif
+