static switch_status_t switch_isac_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
WebRtc_Word16 err;
struct isac_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
}
if (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context)))) {
return SWITCH_STATUS_FALSE;
}
codec->private_info = context;
err = WebRtcIsac_Create(&context->ISAC_main_inst);
if (err < 0) return SWITCH_STATUS_FALSE;
WebRtcIsac_SetEncSampRate(context->ISAC_main_inst, codec->implementation->actual_samples_per_second / 1000);
WebRtcIsac_SetDecSampRate(context->ISAC_main_inst, codec->implementation->actual_samples_per_second / 1000);
if (encoding) {
if (WebRtcIsac_EncoderInit(context->ISAC_main_inst, 0) < 0) {
return SWITCH_STATUS_FALSE;
}
}
if (decoding) {
if (WebRtcIsac_DecoderInit(context->ISAC_main_inst) < 0) {
return SWITCH_STATUS_FALSE;
}
}
if (codec->implementation->actual_samples_per_second == 16000) {
if (WebRtcIsac_ControlBwe(context->ISAC_main_inst, 0, codec->implementation->microseconds_per_packet / 1000, 0) < 0) {
return SWITCH_STATUS_FALSE;
}
} else {
if (WebRtcIsac_Control(context->ISAC_main_inst, codec->implementation->actual_samples_per_second / 1000,
codec->implementation->microseconds_per_packet / 1000) < 0) {
return SWITCH_STATUS_FALSE;
}
}
if (WebRtcIsac_SetMaxPayloadSize(context->ISAC_main_inst, SWITCH_RECOMMENDED_BUFFER_SIZE) < 0) {
return SWITCH_STATUS_FALSE;
}
if (WebRtcIsac_SetMaxRate(context->ISAC_main_inst, codec->implementation->bits_per_second) < 0) {
return SWITCH_STATUS_FALSE;
}
return SWITCH_STATUS_SUCCESS;
}
int main(int argc, char* argv[])
{
//--- File IO ----
FILE* inp;
FILE* outp;
char inname[500];
char outname[500];
/* Runtime statistics */
double rate;
double rateRCU;
unsigned long totalbits = 0;
unsigned long totalBitsRCU = 0;
unsigned long totalsmpls =0;
int32_t bottleneck = 39;
int16_t frameSize = 30; /* ms */
int16_t codingMode = 1;
int16_t shortdata[FRAMESAMPLES_SWB_10ms];
int16_t decoded[MAX_FRAMESAMPLES_SWB];
//uint16_t streamdata[1000];
int16_t speechType[1];
int16_t payloadLimit;
int32_t rateLimit;
ISACStruct* ISAC_main_inst;
int16_t stream_len = 0;
int16_t declen = 0;
int16_t err;
int16_t cur_framesmpls;
int endfile;
#ifdef WIN32
double length_file;
double runtime;
char outDrive[10];
char outPath[500];
char outPrefix[500];
char outSuffix[500];
char bitrateFileName[500];
FILE* bitrateFile;
double starttime;
double rateLB = 0;
double rateUB = 0;
#endif
FILE* histFile;
FILE* averageFile;
int sampFreqKHz;
int samplesIn10Ms;
int16_t maxStreamLen = 0;
char histFileName[500];
char averageFileName[500];
unsigned int hist[600];
unsigned int tmpSumStreamLen = 0;
unsigned int packetCntr = 0;
unsigned int lostPacketCntr = 0;
uint8_t payload[1200];
uint8_t payloadRCU[1200];
uint16_t packetLossPercent = 0;
int16_t rcuStreamLen = 0;
int onlyEncode;
int onlyDecode;
BottleNeckModel packetData;
packetData.arrival_time = 0;
packetData.sample_count = 0;
packetData.rtp_number = 0;
memset(hist, 0, sizeof(hist));
/* handling wrong input arguments in the command line */
if(argc < 5)
{
int size;
WebRtcIsac_AssignSize(&size);
printf("\n\nWrong number of arguments or flag values.\n\n");
printf("Usage:\n\n");
printf("%s infile outfile -bn bottelneck [options] \n\n", argv[0]);
printf("with:\n");
printf("-I................... indicates encoding in instantaneous mode.\n");
printf("-bn bottleneck....... the value of the bottleneck in bit/sec, e.g. 39742,\n");
printf(" in instantaneous (channel-independent) mode.\n\n");
printf("infile............... Normal speech input file\n\n");
printf("outfile.............. Speech output file\n\n");
printf("OPTIONS\n");
printf("-------\n");
printf("-fs sampFreq......... sampling frequency of codec 16 or 32 (default) kHz.\n");
printf("-plim payloadLim..... payload limit in bytes,\n");
printf(" default is the maximum possible.\n");
printf("-rlim rateLim........ rate limit in bits/sec, \n");
printf(" default is the maimum possible.\n");
printf("-h file.............. record histogram and *append* to 'file'.\n");
printf("-ave file............ record average rate of 3 sec intervales and *append* to 'file'.\n");
printf("-ploss............... packet-loss percentage.\n");
printf("-enc................. do only encoding and store the bit-stream\n");
printf("-dec................. the input file is a bit-stream, decode it.\n");
printf("\n");
printf("Example usage:\n\n");
printf("%s speechIn.pcm speechOut.pcm -B 40000 -fs 32 \n\n", argv[0]);
printf("structure size %d bytes\n", size);
exit(0);
}
/* Get Bottleneck value */
bottleneck = readParamInt(argc, argv, "-bn", 50000);
fprintf(stderr,"\nfixed bottleneck rate of %d bits/s\n\n", bottleneck);
/* Get Input and Output files */
sscanf(argv[1], "%s", inname);
sscanf(argv[2], "%s", outname);
codingMode = readSwitch(argc, argv, "-I");
sampFreqKHz = (int16_t)readParamInt(argc, argv, "-fs", 32);
if(readParamString(argc, argv, "-h", histFileName, 500) > 0)
{
histFile = fopen(histFileName, "a");
if(histFile == NULL)
{
printf("cannot open hist file %s", histFileName);
exit(0);
}
}
else
{
// NO recording of hitstogram
histFile = NULL;
}
packetLossPercent = readParamInt(argc, argv, "-ploss", 0);
if(readParamString(argc, argv, "-ave", averageFileName, 500) > 0)
{
averageFile = fopen(averageFileName, "a");
if(averageFile == NULL)
{
printf("cannot open file to write rate %s", averageFileName);
exit(0);
}
}
else
{
averageFile = NULL;
}
onlyEncode = readSwitch(argc, argv, "-enc");
onlyDecode = readSwitch(argc, argv, "-dec");
switch(sampFreqKHz)
{
case 16:
{
samplesIn10Ms = 160;
break;
}
case 32:
{
samplesIn10Ms = 320;
break;
}
default:
printf("A sampling frequency of %d kHz is not supported,\
valid values are 8 and 16.\n", sampFreqKHz);
exit(-1);
}
payloadLimit = (int16_t)readParamInt(argc, argv, "-plim", 400);
rateLimit = readParamInt(argc, argv, "-rlim", 106800);
if ((inp = fopen(inname,"rb")) == NULL) {
printf(" iSAC: Cannot read file %s.\n", inname);
exit(1);
}
if ((outp = fopen(outname,"wb")) == NULL) {
printf(" iSAC: Cannot write file %s.\n", outname);
exit(1);
}
#ifdef WIN32
_splitpath(outname, outDrive, outPath, outPrefix, outSuffix);
_makepath(bitrateFileName, outDrive, outPath, "bitrate", ".txt");
bitrateFile = fopen(bitrateFileName, "a");
fprintf(bitrateFile, "% %%s \n", inname);
#endif
printf("\n");
printf("Input.................... %s\n", inname);
printf("Output................... %s\n", outname);
printf("Encoding Mode............ %s\n",
(codingMode == 1)? "Channel-Independent":"Channel-Adaptive");
printf("Bottleneck............... %d bits/sec\n", bottleneck);
printf("Packet-loss Percentage... %d\n", packetLossPercent);
printf("\n");
#ifdef WIN32
starttime = clock()/(double)CLOCKS_PER_SEC; /* Runtime statistics */
#endif
/* Initialize the ISAC and BN structs */
err = WebRtcIsac_Create(&ISAC_main_inst);
WebRtcIsac_SetEncSampRate(ISAC_main_inst, sampFreqKHz * 1000);
WebRtcIsac_SetDecSampRate(ISAC_main_inst, sampFreqKHz >= 32 ? 32000 :
16000);
/* Error check */
if (err < 0) {
fprintf(stderr,"\n\n Error in create.\n\n");
exit(EXIT_FAILURE);
}
framecnt = 0;
endfile = 0;
/* Initialize encoder and decoder */
if(WebRtcIsac_EncoderInit(ISAC_main_inst, codingMode) < 0)
{
printf("cannot initialize encoder\n");
return -1;
}
if(WebRtcIsac_DecoderInit(ISAC_main_inst) < 0)
{
printf("cannot initialize decoder\n");
return -1;
}
//{
// int32_t b1, b2;
// FILE* fileID = fopen("GetBNTest.txt", "w");
// b2 = 32100;
// while(b2 <= 52000)
// {
// WebRtcIsac_Control(ISAC_main_inst, b2, frameSize);
// WebRtcIsac_GetUplinkBw(ISAC_main_inst, &b1);
// fprintf(fileID, "%5d %5d\n", b2, b1);
// b2 += 10;
// }
//}
if(codingMode == 1)
{
if(WebRtcIsac_Control(ISAC_main_inst, bottleneck, frameSize) < 0)
{
printf("cannot set bottleneck\n");
return -1;
}
}
else
{
if(WebRtcIsac_ControlBwe(ISAC_main_inst, 15000, 30, 1) < 0)
{
printf("cannot configure BWE\n");
return -1;
}
}
if(WebRtcIsac_SetMaxPayloadSize(ISAC_main_inst, payloadLimit) < 0)
{
printf("cannot set maximum payload size %d.\n", payloadLimit);
return -1;
}
if (rateLimit < 106800) {
if(WebRtcIsac_SetMaxRate(ISAC_main_inst, rateLimit) < 0)
{
printf("cannot set the maximum rate %d.\n", rateLimit);
return -1;
}
}
//=====================================
//#ifdef HAVE_DEBUG_INFO
// if(setupDebugStruct(&debugInfo) < 0)
// {
// exit(1);
// }
//#endif
while (endfile == 0)
{
fprintf(stderr," \rframe = %7li", framecnt);
//============== Readind from the file and encoding =================
cur_framesmpls = 0;
stream_len = 0;
if(onlyDecode)
{
uint8_t auxUW8;
size_t auxSizet;
if(fread(&auxUW8, sizeof(uint8_t), 1, inp) < 1)
{
break;
}
stream_len = ((uint8_t)auxUW8) << 8;
if(fread(&auxUW8, sizeof(uint8_t), 1, inp) < 1)
{
break;
}
stream_len |= (uint16_t)auxUW8;
auxSizet = (size_t)stream_len;
if(fread(payload, 1, auxSizet, inp) < auxSizet)
{
printf("last payload is corrupted\n");
break;
}
}
else
{
while(stream_len == 0)
{
// Read 10 ms speech block
endfile = readframe(shortdata, inp, samplesIn10Ms);
if(endfile)
{
break;
}
cur_framesmpls += samplesIn10Ms;
//-------- iSAC encoding ---------
stream_len = WebRtcIsac_Encode(
ISAC_main_inst,
shortdata,
payload);
if(stream_len < 0)
{
// exit if returned with error
//errType=WebRtcIsac_GetErrorCode(ISAC_main_inst);
fprintf(stderr,"\nError in encoder\n");
getchar();
exit(EXIT_FAILURE);
}
}
//===================================================================
if(endfile)
{
break;
}
rcuStreamLen = WebRtcIsac_GetRedPayload(
ISAC_main_inst, payloadRCU);
get_arrival_time(cur_framesmpls, stream_len, bottleneck, &packetData,
sampFreqKHz * 1000, sampFreqKHz * 1000);
if(WebRtcIsac_UpdateBwEstimate(ISAC_main_inst,
payload,
stream_len,
packetData.rtp_number,
packetData.sample_count,
packetData.arrival_time)
< 0)
{
printf(" BWE Error at client\n");
return -1;
}
}
if(endfile)
{
break;
}
maxStreamLen = (stream_len > maxStreamLen)? stream_len:maxStreamLen;
packetCntr++;
hist[stream_len]++;
if(averageFile != NULL)
{
tmpSumStreamLen += stream_len;
if(packetCntr == 100)
{
// kbps
fprintf(averageFile, "%8.3f ", (double)tmpSumStreamLen * 8.0 / (30.0 * packetCntr));
packetCntr = 0;
tmpSumStreamLen = 0;
}
}
if(onlyEncode)
{
uint8_t auxUW8;
auxUW8 = (uint8_t)(((stream_len & 0x7F00) >> 8) & 0xFF);
if (fwrite(&auxUW8, sizeof(uint8_t), 1, outp) != 1) {
return -1;
}
auxUW8 = (uint8_t)(stream_len & 0xFF);
if (fwrite(&auxUW8, sizeof(uint8_t), 1, outp) != 1) {
return -1;
}
if (fwrite(payload, 1, stream_len,
outp) != (size_t)stream_len) {
return -1;
}
}
else
{
//======================= iSAC decoding ===========================
if((rand() % 100) < packetLossPercent)
{
declen = WebRtcIsac_DecodeRcu(
ISAC_main_inst,
payloadRCU,
rcuStreamLen,
decoded,
speechType);
lostPacketCntr++;
}
else
{
declen = WebRtcIsac_Decode(
ISAC_main_inst,
payload,
stream_len,
decoded,
speechType);
}
if(declen <= 0)
{
//errType=WebRtcIsac_GetErrorCode(ISAC_main_inst);
fprintf(stderr,"\nError in decoder.\n");
getchar();
exit(1);
}
// Write decoded speech frame to file
if (fwrite(decoded, sizeof(int16_t),
declen, outp) != (size_t)declen) {
return -1;
}
cur_framesmpls = declen;
}
// Update Statistics
framecnt++;
totalsmpls += cur_framesmpls;
if(stream_len > 0)
{
totalbits += 8 * stream_len;
}
if(rcuStreamLen > 0)
{
totalBitsRCU += 8 * rcuStreamLen;
}
}