git-svn-id: http://webrtc.googlecode.com/svn/trunk@4 4adac7df-926f-26a2-2b94-8c16560cd09d

modules/audio_coding/NetEQ/main/source/mcu_dsp_common.h

@@ -0,0 +1,61 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * The main NetEQ instance, which is where the DSP and MCU sides join.
+ */
+
+#ifndef MCU_DSP_COMMON_H
+#define MCU_DSP_COMMON_H
+
+#include "typedefs.h"
+
+#include "dsp.h"
+#include "mcu.h"
+
+/* Define size of shared memory area. */
+#if defined(NETEQ_48KHZ_WIDEBAND)
+    #define SHARED_MEM_SIZE (6*640)
+#elif defined(NETEQ_32KHZ_WIDEBAND)
+    #define SHARED_MEM_SIZE (4*640)
+#elif defined(NETEQ_WIDEBAND)
+    #define SHARED_MEM_SIZE (2*640)
+#else
+    #define SHARED_MEM_SIZE 640
+#endif
+
+/* Struct to hold the NetEQ instance */
+typedef struct
+{
+    DSPInst_t DSPinst; /* DSP part of the NetEQ instance */
+    MCUInst_t MCUinst; /* MCU part of the NetEQ instance */
+    WebRtc_Word16 ErrorCode; /* Store last error code */
+#ifdef NETEQ_STEREO
+    WebRtc_Word16 masterSlave; /* 0 = not set, 1 = master, 2 = slave */
+#endif /* NETEQ_STEREO */
+} MainInst_t;
+
+/* Struct used for communication between DSP and MCU sides of NetEQ */
+typedef struct
+{
+    WebRtc_UWord32 playedOutTS; /* Timestamp position at end of DSP data */
+    WebRtc_UWord16 samplesLeft; /* Number of samples stored */
+    WebRtc_Word16 MD; /* Multiple description codec information */
+    WebRtc_Word16 lastMode; /* Latest mode of NetEQ playout */
+    WebRtc_Word16 frameLen; /* Frame length of previously decoded packet */
+} DSP2MCU_info_t;
+
+/* Initialize instances with read and write address */
+int WebRtcNetEQ_DSPinit(MainInst_t *inst);
+
+/* The DSP side will call this function to interrupt the MCU side */
+int WebRtcNetEQ_DSP2MCUinterrupt(MainInst_t *inst, WebRtc_Word16 *pw16_shared_mem);
+
+#endif