1 files changed, 132 insertions, 0 deletions
diff --git a/hifi/xaf/hifi-dpf/include/xf-timebase.h b/hifi/xaf/hifi-dpf/include/xf-timebase.h
new file mode 100644
index 00000000..7b27d580
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-timebase.h
@@ -0,0 +1,132 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-timebase.h
+ *
+ * Common timebase for deadline-driven scheduler
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-timebase.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Timebase for deadline-driven scheduler
+ ******************************************************************************/
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...set internal scheduler frequency as a LCM of all supported sample rates;
+ * it is in general not a problem to have large number here, however it should
+ * be noted that maximal-size audio-buffer that we handle, when expressed in
+ * ticks of this virtual frequency, must not exceed 2**31 (for otherwise
+ * scheduler timestamp comparison function will misbehave).
+ */
+#define XF_TIMEBASE_FREQ           (4 * 3 * 56448000U)
+/* ...add paranoic check considering maximal audio-buffer duration as 0.1 sec */
+C_BUG((u32)(XF_TIMEBASE_FREQ / 10) >= (1 << 31));
+#else
+/* ...set internal scheduler frequency as a LCM of all supported sample rates */
+#define XF_TIMEBASE_FREQ           56448000U
+#endif
+/* ...supported sampling rates */
+C_BUG(XF_TIMEBASE_FREQ % 4000);
+C_BUG(XF_TIMEBASE_FREQ % 8000);
+C_BUG(XF_TIMEBASE_FREQ % 11025);
+C_BUG(XF_TIMEBASE_FREQ % 12000);
+C_BUG(XF_TIMEBASE_FREQ % 16000);
+C_BUG(XF_TIMEBASE_FREQ % 22050);
+C_BUG(XF_TIMEBASE_FREQ % 24000);
+C_BUG(XF_TIMEBASE_FREQ % 32000);
+C_BUG(XF_TIMEBASE_FREQ % 44100);
+C_BUG(XF_TIMEBASE_FREQ % 48000);
+C_BUG(XF_TIMEBASE_FREQ % 64000);
+C_BUG(XF_TIMEBASE_FREQ % 88200);
+C_BUG(XF_TIMEBASE_FREQ % 96000);
+C_BUG(XF_TIMEBASE_FREQ % 128000);
+C_BUG(XF_TIMEBASE_FREQ % 176400);
+C_BUG(XF_TIMEBASE_FREQ % 192000);
+
+/* ...calculate upsampling factor for given sample rate */
+static inline u32 xf_timebase_factor(u32 sample_rate)
+{
+    /* ...probably we can tolerate single division */
+    switch(sample_rate)
+    {
+    case 4000:
+        return XF_TIMEBASE_FREQ / 4000;
+    case 8000:
+        return XF_TIMEBASE_FREQ / 8000;
+    case 11025:
+        return XF_TIMEBASE_FREQ / 11025;
+    case 12000:
+        return XF_TIMEBASE_FREQ / 11025;
+    case 16000:
+        return XF_TIMEBASE_FREQ / 16000;
+    case 22050:
+        return XF_TIMEBASE_FREQ / 22050;
+    case 24000:
+        return XF_TIMEBASE_FREQ / 24000;
+    case 32000:
+        return XF_TIMEBASE_FREQ / 32000;
+    case 44100:
+        return XF_TIMEBASE_FREQ / 44100;
+    case 48000:
+        return XF_TIMEBASE_FREQ / 48000;
+    case 64000:
+        return XF_TIMEBASE_FREQ / 64000;
+    case 88200:
+        return XF_TIMEBASE_FREQ / 88200;
+    case 96000:
+        return XF_TIMEBASE_FREQ / 96000;
+    case 128000:
+        return XF_TIMEBASE_FREQ / 128000;
+    case 176400:
+        return XF_TIMEBASE_FREQ / 176400;
+    case 192000:
+        return XF_TIMEBASE_FREQ / 192000;
+    default:
+        return 0;
+    }
+}
+
+/* ...core timebase */
+static inline u32 xf_core_timebase(u32 core)
+{
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+    
+    /* ...get local scheduler timebase */
+    return xf_sched_timestamp(&cd->sched);
+}
+
+/* ...compare timestamps */
+static inline int xf_time_after(u32 a, u32 b)
+{
+    return ((s32)(a - b) > 0);
+}
+    
+/* ...compare timstamps */
+static inline int xf_time_before(u32 a, u32 b)
+{
+    return ((s32)(a - b) < 0);
+}
+