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

2011-05-30 11:22:19 +00:00
parent 01813fe945
commit 77ae29bc81
1153 changed files with 404089 additions and 0 deletions
--- a/modules/audio_coding/NetEQ/main/source/dtmf_buffer.h
+++ b/modules/audio_coding/NetEQ/main/source/dtmf_buffer.h
@@ -0,0 +1,101 @@
+/*
+ *  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.
+ */
+
+/*
+ * Packet buffer for DTMF messages.
+ */
+
+#ifndef DTMF_BUFFER_H
+#define DTMF_BUFFER_H
+
+#include "typedefs.h"
+
+#include "neteq_defines.h"
+
+/* Include this code only if ATEVENT (DTMF) is defined in */
+#ifdef NETEQ_ATEVENT_DECODE
+
+#define MAX_DTMF_QUEUE_SIZE 4 
+
+typedef struct dtmf_inst_t_
+{
+    WebRtc_Word16 MaxPLCtime;
+    WebRtc_Word16 CurrentPLCtime;
+    WebRtc_Word16 EventQueue[MAX_DTMF_QUEUE_SIZE];
+    WebRtc_Word16 EventQueueVolume[MAX_DTMF_QUEUE_SIZE];
+    WebRtc_Word16 EventQueueEnded[MAX_DTMF_QUEUE_SIZE];
+    WebRtc_UWord32 EventQueueStartTime[MAX_DTMF_QUEUE_SIZE];
+    WebRtc_UWord32 EventQueueEndTime[MAX_DTMF_QUEUE_SIZE];
+    WebRtc_Word16 EventBufferSize;
+    WebRtc_Word16 framelen;
+} dtmf_inst_t;
+
+/****************************************************************************
+ * WebRtcNetEQ_DtmfDecoderInit(...)
+ *
+ * This function initializes a DTMF instance.
+ *
+ * Input:
+ *      - DTMF_decinst_t    : DTMF instance
+ *      - fs                : The sample rate used for the DTMF
+ *      - MaxPLCtime        : Maximum length for a PLC before zeros should be inserted
+ *
+ * Return value             :  0 - Ok
+ *                            -1 - Error
+ */
+
+WebRtc_Word16 WebRtcNetEQ_DtmfDecoderInit(dtmf_inst_t *DTMFdec_inst, WebRtc_UWord16 fs,
+                                          WebRtc_Word16 MaxPLCtime);
+
+/****************************************************************************
+ * WebRtcNetEQ_DtmfInsertEvent(...)
+ *
+ * This function decodes a packet with DTMF frames.
+ *
+ * Input:
+ *      - DTMFdec_inst      : DTMF instance
+ *      - encoded           : Encoded DTMF frame(s)
+ *      - len               : Bytes in encoded vector
+ *
+ *
+ * Return value             :  0 - Ok
+ *                            -1 - Error
+ */
+
+WebRtc_Word16 WebRtcNetEQ_DtmfInsertEvent(dtmf_inst_t *DTMFdec_inst,
+                                          const WebRtc_Word16 *encoded, WebRtc_Word16 len,
+                                          WebRtc_UWord32 timeStamp);
+
+/****************************************************************************
+ * WebRtcNetEQ_DtmfDecode(...)
+ *
+ * This function decodes a packet with DTMF frame(s). Output will be the
+ * event that should be played for next 10 ms. 
+ *
+ * Input:
+ *      - DTMFdec_inst      : DTMF instance
+ *      - currTimeStamp     : The current playout timestamp
+ *
+ * Output:
+ *      - event             : Event number to be played
+ *      - volume            : Event volume to be played
+ *
+ * Return value             : >0 - There is a event to be played
+ *                             0 - No event to be played
+ *                            -1 - Error
+ */
+
+WebRtc_Word16 WebRtcNetEQ_DtmfDecode(dtmf_inst_t *DTMFdec_inst, WebRtc_Word16 *event,
+                                     WebRtc_Word16 *volume, WebRtc_UWord32 currTimeStamp);
+
+#endif    /* NETEQ_ATEVENT_DECODE */
+
+#endif    /* DTMF_BUFFER_H */
+