Update of /cvsroot/alsa/alsa-lib/include
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv23421
Modified Files:
pcm.h
Log Message:
Initial proposal for simple PCM API extension
Index: pcm.h
===================================================================
RCS file: /cvsroot/alsa/alsa-lib/include/pcm.h,v
retrieving revision 1.182
retrieving revision 1.183
diff -u -r1.182 -r1.183
--- pcm.h 19 Jan 2004 19:48:27 -0000 1.182
+++ pcm.h 14 Mar 2004 18:37:55 -0000 1.183
@@ -1214,6 +1214,55 @@
/** \} */
/**
+ * \defgroup PCM_Simple Simple setup functions
+ * \ingroup PCM
+ * See the \ref pcm page for more details.
+ * \{
+ */
+
+/** Simple PCM latency type */
+typedef enum _snd_spcm_latency {
+ /** standard latency - for standard playback or capture
+ (estimated latency in one direction 350ms) */
+ SND_SPCM_LATENCY_STANDARD = 0,
+ /** medium latency - software phones etc.
+ (estimated latency in one direction maximally 25ms */
+ SND_SPCM_LATENCY_MEDIUM,
+ /** realtime latency - realtime applications (effect processors etc.)
+ (estimated latency in one direction 5ms and better) */
+ SND_SPCM_LATENCY_REALTIME
+} snd_spcm_latency_t;
+
+/** Simple PCM xrun type */
+typedef enum _snd_spcm_xrun_type {
+ /** driver / library will ignore all xruns, the stream runs forever */
+ SND_SPCM_XRUN_IGNORE = 0,
+ /** driver / library stops the stream when an xrun occurs */
+ SND_SPCM_XRUN_STOP
+} snd_spcm_xrun_type_t;
+
+int snd_spcm_init(snd_pcm_t *pcm,
+ unsigned int rate,
+ unsigned int channels,
+ snd_pcm_format_t format,
+ snd_pcm_subformat_t subformat,
+ snd_spcm_latency_t latency,
+ snd_pcm_access_t access,
+ snd_spcm_xrun_type_t xrun_type);
+
+int snd_spcm_init_duplex(snd_pcm_t *playback_pcm,
+ snd_pcm_t *capture_pcm,
+ unsigned int rate,
+ unsigned int channels,
+ snd_pcm_format_t format,
+ snd_pcm_subformat_t subformat,
+ snd_spcm_latency_t latency,
+ snd_pcm_access_t access,
+ snd_spcm_xrun_type_t xrun_type);
+
+/** \} */
+
+/**
* \defgroup PCM_Deprecated Deprecated Functions
* \ingroup PCM
* See the \ref pcm page for more details.
-------------------------------------------------------
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