Update of /cvsroot/alsa/alsa-kernel/core
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv8662/core
Modified Files:
pcm.c pcm_misc.c
Log Message:
- added snd_pcm_limit_hw_rates() to determine the min/max rates from
rates bits.
Index: pcm.c
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/core/pcm.c,v
retrieving revision 1.39
retrieving revision 1.40
diff -u -r1.39 -r1.40
--- pcm.c 17 Feb 2004 19:32:35 -0000 1.39
+++ pcm.c 24 Feb 2004 15:37:44 -0000 1.40
@@ -1061,3 +1061,4 @@
EXPORT_SYMBOL(snd_pcm_format_silence_64);
EXPORT_SYMBOL(snd_pcm_format_set_silence);
EXPORT_SYMBOL(snd_pcm_build_linear_format);
+EXPORT_SYMBOL(snd_pcm_limit_hw_rates);
Index: pcm_misc.c
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/core/pcm_misc.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -r1.11 -r1.12
--- pcm_misc.c 5 Feb 2004 15:10:01 -0000 1.11
+++ pcm_misc.c 24 Feb 2004 15:37:44 -0000 1.12
@@ -654,3 +654,35 @@
}
return
snd_int_to_enum(((int(*)[2][2])linear_formats)[width][!!unsignd][!!big_endian]);
}
+
+/**
+ * snd_pcm_limit_hw_rates - determine rate_min/rate_max fields
+ * @runtime: the runtime instance
+ *
+ * Determines the rate_min and rate_max fields from the rates bits of
+ * the given runtime->hw.
+ *
+ * Returns zero if successful.
+ */
+int snd_pcm_limit_hw_rates(snd_pcm_runtime_t *runtime)
+{
+ static unsigned rates[] = {
+ /* ATTENTION: these values depend on the definition in pcm.h! */
+ 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
+ 64000, 88200, 96000, 176400, 192000
+ };
+ int i;
+ for (i = 0; i < (int)ARRAY_SIZE(rates); i++) {
+ if (runtime->hw.rates & (1 << i)) {
+ runtime->hw.rate_min = rates[i];
+ break;
+ }
+ }
+ for (i = (int)ARRAY_SIZE(rates) - 1; i >= 0; i--) {
+ if (runtime->hw.rates & (1 << i)) {
+ runtime->hw.rate_max = rates[i];
+ break;
+ }
+ }
+ return 0;
+}
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