mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-21 15:37:32 +00:00
126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
#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;
|
|
}
|