Support for Signal calls.

Merge in RedPhone // FREEBIE
2025-12-02 23:01:56 +00:00 · 2015-09-09 13:54:29 -07:00
parent 3d4ae60d81
commit d83a3d71bc
2585 changed files with 803492 additions and 45 deletions
--- a/jni/redphone/AudioCodec.cpp
+++ b/jni/redphone/AudioCodec.cpp
@@ -0,0 +1,125 @@
+#include "AudioCodec.h"
+
+#include <speex/speex.h>
+//#include <speex/speex_preprocess.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include <android/log.h>
+
+#define TAG "AudioCodec"
+
+#define ECHO_TAIL_MILLIS 75
+
+AudioCodec::AudioCodec() : enc(NULL), dec(NULL), aecm(NULL), ns(NULL), initialized(0)
+{ }
+
+int AudioCodec::init() {
+
+  if ((enc = speex_encoder_init(speex_lib_get_mode(SPEEX_MODEID_NB))) == NULL) {
+    __android_log_print(ANDROID_LOG_WARN, TAG, "Encoder failed to initialize!");
+    return -1;
+  }
+
+  if ((dec = speex_decoder_init(speex_lib_get_mode(SPEEX_MODEID_NB))) == NULL) {
+    __android_log_print(ANDROID_LOG_WARN, TAG, "Decoder failed to initialize!");
+    return -1;
+  }
+
+  if (WebRtcAecm_Create(&aecm) != 0) {
+    __android_log_print(ANDROID_LOG_WARN, TAG, "AECM failed to create!");
+    return -1;
+  }
+
+  if (WebRtcAecm_Init(aecm, SPEEX_SAMPLE_RATE) != 0) {
+    __android_log_print(ANDROID_LOG_WARN, TAG, "AECM failed to initialize!");
+    return -1;
+  }
+
+//  if (WebRtcNsx_Create(&ns) != 0) {
+//    __android_log_print(ANDROID_LOG_WARN, TAG, "NS failed to create!");
+//    return -1;
+//  }
+//
+//  if (WebRtcNsx_Init(ns, SPEEX_SAMPLE_RATE) != 0) {
+//    __android_log_print(ANDROID_LOG_WARN, TAG, "NS failed to initialize!");
+//    return -1;
+//  }
+//
+//  if (WebRtcNsx_set_policy(ns, 0) != 0) { // "Mild"
+//    __android_log_print(ANDROID_LOG_WARN, TAG, "NS policy failed!");
+//    return -1;
+//  }
+
+  spx_int32_t config = 1;
+  speex_decoder_ctl(dec, SPEEX_SET_ENH, &config);
+  config = 0;
+  speex_encoder_ctl(enc, SPEEX_SET_VBR, &config);
+  config = 4;
+  speex_encoder_ctl(enc, SPEEX_SET_QUALITY, &config);
+  config = 1;
+  speex_encoder_ctl(enc, SPEEX_SET_COMPLEXITY, &config);
+
+  speex_encoder_ctl(enc, SPEEX_GET_FRAME_SIZE, &enc_frame_size );
+  speex_decoder_ctl(dec, SPEEX_GET_FRAME_SIZE, &dec_frame_size );
+
+  __android_log_print(ANDROID_LOG_WARN, TAG, "Encoding frame size: %d", enc_frame_size);
+  __android_log_print(ANDROID_LOG_WARN, TAG, "Decoding frame size: %d", dec_frame_size);
+
+  speex_bits_init(&enc_bits);
+  speex_bits_init(&dec_bits);
+
+  initialized = 1;
+
+  return 0;
+}
+
+AudioCodec::~AudioCodec() {
+  if (initialized) {
+    speex_bits_destroy( &enc_bits );
+    speex_bits_destroy( &dec_bits );
+  }
+
+  if (aecm != NULL) WebRtcAecm_Free(aecm);
+
+  if (enc != NULL) speex_encoder_destroy( enc );
+  if (dec != NULL) speex_decoder_destroy( dec );
+}
+
+int AudioCodec::encode(short *rawData, char* encodedData, int maxEncodedDataLen) {
+//  short nonoiseData[SPEEX_FRAME_SIZE];
+  short cleanData[SPEEX_FRAME_SIZE];
+
+//  WebRtcNsx_Process(ns, rawData, NULL, nonoiseData, NULL);
+//  WebRtcNsx_Process(ns, rawData+80, NULL, nonoiseData+80, NULL);
+
+  WebRtcAecm_Process(aecm, rawData, NULL, cleanData, SPEEX_FRAME_SIZE, ECHO_TAIL_MILLIS);
+
+  speex_bits_reset(&enc_bits);
+  speex_encode_int(enc, (spx_int16_t *)cleanData, &enc_bits);
+
+  return speex_bits_write(&enc_bits, encodedData, maxEncodedDataLen);
+}
+
+int AudioCodec::decode(char* encodedData, int encodedDataLen, short *rawData) {
+  int rawDataOffset = 0;
+
+  speex_bits_read_from(&dec_bits, encodedData, encodedDataLen);
+
+  while (speex_decode_int(dec, &dec_bits, rawData + rawDataOffset) == 0) { // TODO bounds?
+    WebRtcAecm_BufferFarend(aecm, rawData + rawDataOffset, dec_frame_size);
+    rawDataOffset += dec_frame_size;
+  }
+
+  return rawDataOffset;
+}
+
+int AudioCodec::conceal(int frames, short *rawData) {
+  int i=0;
+  for (i=0;i<frames;i++) {
+    speex_decode_int(dec, NULL, rawData + (i * dec_frame_size));
+  }
+
+  return frames * dec_frame_size;
+}