Changeset 1191

Timestamp:

08/04/08 06:29:03 (4 months ago)

Author:

cdavid

Message:

Improve simple example with pcm drain.

Files:

• trunk/audiolab/scikits/audiolab/soundio/simple2.c (modified) (3 diffs)

trunk/audiolab/scikits/audiolab/soundio/simple2.c

@@ -3 +3 @@
-
-#include <alsa/asoundlib.h>
+
+int play(snd_pcm_t *pcm)
+{
+        int16_t buff[1024 * 16];
+        int i, j;
+        snd_pcm_uframes_t frames;
+
+        for (i = 0; i < 4; ++i) {
+            for (j = 0; j < 1024 * 16; ++j) {
+                buff[j] = random() & 0xff;
+            }
+            frames = snd_pcm_writei(pcm, buff, 1024 * 16); 
+            fprintf(stderr, "%lu\n", frames);
+        }
+
+        return 0;
+}
+
+int set(snd_pcm_t *pcm, snd_pcm_format_t format, snd_pcm_access_t access, 
+        unsigned int channels, unsigned int samplerate)
+{
+        int st;
+
+        st = snd_pcm_set_params(pcm, format, access, channels, samplerate,
+                                1, 1000000);      
+        if (st < 0) {
+                printf("Output failed: %s\n", snd_strerror(st));
+                return st;
+        }
+
+        return 0;
+}
-
-int main()
@@ -14 +46 @@
-        snd_output_t *output;
-
-        uint8_t buff[1024 * 16];
-        int i, j;
-        snd_pcm_sframes_t frames;
@@ -30 +61 @@
-        }
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-        snd_output_close(output);
-        snd_pcm_close(pcm);