Changeset 1190

Timestamp:

08/04/08 05:23:09 (4 months ago)

Author:

cdavid

Message:

More work on Device class: can now set samplerate/channels.

Files:

• trunk/audiolab/scikits/audiolab/soundio/_alsa.pyx (modified) (3 diffs)

trunk/audiolab/scikits/audiolab/soundio/_alsa.pyx

@@ -64 +64 @@
-        int snd_pcm_close(snd_pcm_t *)
-
+        int snd_pcm_set_params(snd_pcm_t *, snd_pcm_format_t,
+                        snd_pcm_access_t, unsigned int,
+                        unsigned int, int, unsigned int)
+
-        char* snd_strerror(int error)
-
@@ -113 +117 @@
-        return cardname
-
-Device
+PCM
-        cdef snd_pcm_t* pcmhdl
-        cdef public char* name
@@ -130 +134 @@
-                if self.pcmhdl:
-                        snd_pcm_close(self.pcmhdl)
+
+cdef class Device:
+        cdef PCM pcm
+        cdef unsigned int samplerate
+        cdef unsigned int channels
+        def __init__(self, samplerate = 48000, channels = 1,
+                     format = SND_PCM_FORMAT_S16,
+                     access = SND_PCM_ACCESS_RW_INTERLEAVED):
+                self.pcm = PCM()
+
+                self.samplerate = samplerate
+                self.channels = channels
+
+                st = snd_pcm_set_params(self.pcm.pcmhdl, format, access, channels,
+                                        samplerate, 1, 1000000)
+                if st < 0:
+                        raise AlsaException()
+
+        def _get_name(self):
+                return self.pcm.name
+        name = property(_get_name)