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

modules/audio_coding/codecs/G722/main/source/g722_interface.c

@@ -0,0 +1,115 @@
+/*
+ *  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.
+ */
+
+
+
+#include <stdlib.h>
+#include <string.h>
+#include "g722_interface.h"
+#include "g722_enc_dec.h"
+#include "typedefs.h"
+
+
+WebRtc_Word16 WebRtcG722_CreateEncoder(G722EncInst **G722enc_inst)
+{
+    *G722enc_inst=(G722EncInst*)malloc(sizeof(g722_encode_state_t));
+    if (*G722enc_inst!=NULL) {
+      return(0);
+    } else {
+      return(-1);
+    }
+}
+
+WebRtc_Word16 WebRtcG722_EncoderInit(G722EncInst *G722enc_inst)
+{
+    // Create and/or reset the G.722 encoder
+    // Bitrate 64 kbps and wideband mode (2)
+    G722enc_inst = (G722EncInst *) g722_encode_init(
+        (g722_encode_state_t*) G722enc_inst, 64000, 2);
+    if (G722enc_inst == NULL) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+WebRtc_Word16 WebRtcG722_FreeEncoder(G722EncInst *G722enc_inst)
+{
+    // Free encoder memory
+    return g722_encode_release((g722_encode_state_t*) G722enc_inst);
+}
+
+WebRtc_Word16 WebRtcG722_Encode(G722EncInst *G722enc_inst,
+                                WebRtc_Word16 *speechIn,
+                                WebRtc_Word16 len,
+                                WebRtc_Word16 *encoded)
+{
+    unsigned char *codechar = (unsigned char*) encoded;
+    // Encode the input speech vector
+    return g722_encode((g722_encode_state_t*) G722enc_inst,
+                       codechar, speechIn, len);
+}
+
+WebRtc_Word16 WebRtcG722_CreateDecoder(G722DecInst **G722dec_inst)
+{
+    *G722dec_inst=(G722DecInst*)malloc(sizeof(g722_decode_state_t));
+    if (*G722dec_inst!=NULL) {
+      return(0);
+    } else {
+      return(-1);
+    }
+}
+
+WebRtc_Word16 WebRtcG722_DecoderInit(G722DecInst *G722dec_inst)
+{
+    // Create and/or reset the G.722 decoder
+    // Bitrate 64 kbps and wideband mode (2)
+    G722dec_inst = (G722DecInst *) g722_decode_init(
+        (g722_decode_state_t*) G722dec_inst, 64000, 2);
+    if (G722dec_inst == NULL) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+WebRtc_Word16 WebRtcG722_FreeDecoder(G722DecInst *G722dec_inst)
+{
+    // Free encoder memory
+    return g722_decode_release((g722_decode_state_t*) G722dec_inst);
+}
+
+WebRtc_Word16 WebRtcG722_Decode(G722DecInst *G722dec_inst,
+                                WebRtc_Word16 *encoded,
+                                WebRtc_Word16 len,
+                                WebRtc_Word16 *decoded,
+                                WebRtc_Word16 *speechType)
+{
+    // Decode the G.722 encoder stream
+    *speechType=G722_WEBRTC_SPEECH;
+    return g722_decode((g722_decode_state_t*) G722dec_inst,
+                       decoded, (WebRtc_UWord8*) encoded, len);
+}
+
+WebRtc_Word16 WebRtcG722_Version(char *versionStr, short len)
+{
+    // Get version string
+    char version[30] = "2.0.0\n";
+    if (strlen(version) < (unsigned int)len)
+    {
+        strcpy(versionStr, version);
+        return 0;
+    }
+    else
+    {
+        return -1;
+    }
+}
+