Support for Signal calls.

Merge in RedPhone

// FREEBIE

jni/webrtc/modules/audio_coding/codecs/g711/g711_interface.c

@@ -0,0 +1,175 @@
+/*
+ *  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 <string.h>
+#include "g711.h"
+#include "g711_interface.h"
+#include "typedefs.h"
+
+int16_t WebRtcG711_EncodeA(void* state,
+                           int16_t* speechIn,
+                           int16_t len,
+                           int16_t* encoded) {
+  int n;
+  uint16_t tempVal, tempVal2;
+
+  // Set and discard to avoid getting warnings
+  (void)(state = NULL);
+
+  // Sanity check of input length
+  if (len < 0) {
+    return (-1);
+  }
+
+  // Loop over all samples
+  for (n = 0; n < len; n++) {
+    tempVal = (uint16_t) linear_to_alaw(speechIn[n]);
+
+#ifdef WEBRTC_ARCH_BIG_ENDIAN
+    if ((n & 0x1) == 1) {
+      encoded[n >> 1] |= ((uint16_t) tempVal);
+    } else {
+      encoded[n >> 1] = ((uint16_t) tempVal) << 8;
+    }
+#else
+    if ((n & 0x1) == 1) {
+      tempVal2 |= ((uint16_t) tempVal) << 8;
+      encoded[n >> 1] |= ((uint16_t) tempVal) << 8;
+    } else {
+      tempVal2 = ((uint16_t) tempVal);
+      encoded[n >> 1] = ((uint16_t) tempVal);
+    }
+#endif
+  }
+  return (len);
+}
+
+int16_t WebRtcG711_EncodeU(void* state,
+                           int16_t* speechIn,
+                           int16_t len,
+                           int16_t* encoded) {
+  int n;
+  uint16_t tempVal;
+
+  // Set and discard to avoid getting warnings
+  (void)(state = NULL);
+
+  // Sanity check of input length
+  if (len < 0) {
+    return (-1);
+  }
+
+  // Loop over all samples
+  for (n = 0; n < len; n++) {
+    tempVal = (uint16_t) linear_to_ulaw(speechIn[n]);
+
+#ifdef WEBRTC_ARCH_BIG_ENDIAN
+    if ((n & 0x1) == 1) {
+      encoded[n >> 1] |= ((uint16_t) tempVal);
+    } else {
+      encoded[n >> 1] = ((uint16_t) tempVal) << 8;
+    }
+#else
+    if ((n & 0x1) == 1) {
+      encoded[n >> 1] |= ((uint16_t) tempVal) << 8;
+    } else {
+      encoded[n >> 1] = ((uint16_t) tempVal);
+    }
+#endif
+  }
+  return (len);
+}
+
+int16_t WebRtcG711_DecodeA(void* state,
+                           int16_t* encoded,
+                           int16_t len,
+                           int16_t* decoded,
+                           int16_t* speechType) {
+  int n;
+  uint16_t tempVal;
+
+  // Set and discard to avoid getting warnings
+  (void)(state = NULL);
+
+  // Sanity check of input length
+  if (len < 0) {
+    return (-1);
+  }
+
+  for (n = 0; n < len; n++) {
+#ifdef WEBRTC_ARCH_BIG_ENDIAN
+    if ((n & 0x1) == 1) {
+      tempVal = ((uint16_t) encoded[n >> 1] & 0xFF);
+    } else {
+      tempVal = ((uint16_t) encoded[n >> 1] >> 8);
+    }
+#else
+    if ((n & 0x1) == 1) {
+      tempVal = (encoded[n >> 1] >> 8);
+    } else {
+      tempVal = (encoded[n >> 1] & 0xFF);
+    }
+#endif
+    decoded[n] = (int16_t) alaw_to_linear(tempVal);
+  }
+
+  *speechType = 1;
+  return (len);
+}
+
+int16_t WebRtcG711_DecodeU(void* state,
+                           int16_t* encoded,
+                           int16_t len,
+                           int16_t* decoded,
+                           int16_t* speechType) {
+  int n;
+  uint16_t tempVal;
+
+  // Set and discard to avoid getting warnings
+  (void)(state = NULL);
+
+  // Sanity check of input length
+  if (len < 0) {
+    return (-1);
+  }
+
+  for (n = 0; n < len; n++) {
+#ifdef WEBRTC_ARCH_BIG_ENDIAN
+    if ((n & 0x1) == 1) {
+      tempVal = ((uint16_t) encoded[n >> 1] & 0xFF);
+    } else {
+      tempVal = ((uint16_t) encoded[n >> 1] >> 8);
+    }
+#else
+    if ((n & 0x1) == 1) {
+      tempVal = (encoded[n >> 1] >> 8);
+    } else {
+      tempVal = (encoded[n >> 1] & 0xFF);
+    }
+#endif
+    decoded[n] = (int16_t) ulaw_to_linear(tempVal);
+  }
+
+  *speechType = 1;
+  return (len);
+}
+
+int WebRtcG711_DurationEst(void* state,
+                           const uint8_t* payload,
+                           int payload_length_bytes) {
+  (void) state;
+  (void) payload;
+  /* G.711 is one byte per sample, so we can just return the number of bytes. */
+  return payload_length_bytes;
+}
+
+int16_t WebRtcG711_Version(char* version, int16_t lenBytes) {
+  strncpy(version, "2.0.0", lenBytes);
+  return 0;
+}