static void ms_opus_enc_preprocess(MSFilter *f) {
int error;
OpusEncData *d = (OpusEncData *)f->data;
/* create the encoder */
d->state = opus_encoder_create(d->samplerate, d->channels, d->application, &error);
if (error != OPUS_OK) {
ms_error("Opus encoder creation failed: %s", opus_strerror(error));
return;
}
/* set complexity to 0 for single processor arm devices */
#if defined(__arm__) || defined(_M_ARM)
if (ms_factory_get_cpu_count(f->factory)==1){
opus_encoder_ctl(d->state, OPUS_SET_COMPLEXITY(0));
}else{
opus_encoder_ctl(d->state, OPUS_SET_COMPLEXITY(5));
}
#endif
error = opus_encoder_ctl(d->state, OPUS_SET_PACKET_LOSS_PERC(10));
if (error != OPUS_OK) {
ms_error("Could not set default loss percentage to opus encoder: %s", opus_strerror(error));
}
/* set the encoder parameters: VBR, IN_BAND_FEC, DTX and bitrate settings */
ms_opus_enc_set_vbr(f);
ms_opus_enc_set_inbandfec(f);
ms_opus_enc_set_dtx(f);
/* if decoder prefers mono signal, force encoder to output mono signal */
if (d->stereo == 0) {
error = opus_encoder_ctl(d->state, OPUS_SET_FORCE_CHANNELS(1));
if (error != OPUS_OK) {
ms_error("could not force mono channel to opus encoder: %s", opus_strerror(error));
}
if (d->channels == 2) ms_message("Opus encoder configured to encode mono despite it is feed with stereo.");
}else if (d->channels == 2){
ms_message("Opus encoder configured to encode stereo.");
}
ms_filter_lock(f);
// set bitrate wasn't call, compute it with the default network bitrate (36000)
if (d->bitrate==-1) {
compute_max_bitrate(d, 0);
}
apply_max_bitrate(d);
ms_filter_unlock(f);
}
static int ms_opus_enc_set_bitrate(MSFilter *f, void *arg) {
OpusEncData *d = (OpusEncData *)f->data;
int ptimeStepValue = 0;
int ptimeStepSign = 1;
int ptimeTarget = d->ptime;
int bitrate = *((int *)arg); // the argument is the network bitrate requested
/* this function also manage the ptime, check if we are increasing or decreasing the bitrate in order to possibly decrease or increase ptime */
if (d->bitrate>0 && d->ptime>0) { /* at first call to set_bitrate(bitrate is initialised at -1), do not modify ptime, neither if it wasn't initialised too */
if (bitrate > d->max_network_bitrate ) {
ptimeStepSign = -1;
}
/* if the change requested is higher than the expected modification gained by changing ptime, do it */
/* target ptime is 20 more or less than current one, but in range [20,120] */
ptimeTarget = d->ptime+ptimeStepSign*20;
if (ptimeTarget<20) {
ptimeTarget = 20;
}
if (ptimeTarget>120) {
ptimeTarget = 120;
}
// ABS(difference of current and requested bitrate) ABS(current network bandwidth overhead - new ptime target overhead)
if ( (d->max_network_bitrate - bitrate)*ptimeStepSign > (((40*8*1000)/d->ptime - (40*8*1000)/ptimeTarget) * ptimeStepSign)) {
ptimeStepValue = 20;
}
}
d->max_network_bitrate = bitrate;
ms_message("opus setbitrate to %d",d->max_network_bitrate);
if (d->bitrate>0 && d->ptime>0) { /*don't apply bitrate before prepocess*/
ms_filter_lock(f);
compute_max_bitrate(d, ptimeStepValue*ptimeStepSign);
apply_max_bitrate(d);
ms_filter_unlock(f);
}
return 0;
}
static void ms_opus_enc_preprocess(MSFilter *f) {
int error;
OpusEncData *d = (OpusEncData *)f->data;
/* create the encoder */
d->state = opus_encoder_create(d->samplerate, d->channels, d->application, &error);
if (error != OPUS_OK) {
ms_error("Opus encoder creation failed: %s", opus_strerror(error));
return;
}
/* set complexity to 0 for arm devices */
#ifdef __arm__
opus_encoder_ctl(d->state, OPUS_SET_COMPLEXITY(0));
#endif
error = opus_encoder_ctl(d->state, OPUS_SET_PACKET_LOSS_PERC(10));
if (error != OPUS_OK) {
ms_error("Could not set default loss percentage to opus encoder: %s", opus_strerror(error));
}
/* set the encoder parameters: VBR, IN_BAND_FEC, DTX and bitrate settings */
ms_opus_enc_set_vbr(f);
ms_opus_enc_set_inbandfec(f);
ms_opus_enc_set_dtx(f);
/* if decoder prefers mono signal, force encoder to output mono signal */
if (d->stereo == 0) {
error = opus_encoder_ctl(d->state, OPUS_SET_FORCE_CHANNELS(1));
if (error != OPUS_OK) {
ms_error("could not force mono channel to opus encoder: %s", opus_strerror(error));
}
}
ms_filter_lock(f);
if (d->ptime==-1) { // set ptime wasn't call, set default:20ms
d->ptime = 20;
}
if (d->bitrate==-1) { // set bitrate wasn't call, compute it with the default network bitrate (36000)
compute_max_bitrate(d, 0);
}
apply_max_bitrate(d);
ms_filter_unlock(f);
}
static void ms_opus_enc_preprocess(MSFilter *f) {
int error;
int opusComplexity = -1;
const char *env = NULL;
OpusEncData *d = (OpusEncData *)f->data;
/* create the encoder */
d->state = opus_encoder_create(d->samplerate, d->channels, d->application, &error);
if (error != OPUS_OK) {
ms_error("Opus encoder creation failed: %s", opus_strerror(error));
return;
}
#ifndef MS2_WINDOWS_UNIVERSAL
env = getenv("MS2_OPUS_COMPLEXITY");
#endif
if (env != NULL) {
opusComplexity = atoi(env);
if (opusComplexity < -1)
opusComplexity = -1; /*our default value*/
if (opusComplexity > 10)
opusComplexity = 10;
}
if (opusComplexity == -1){
#if defined(__arm__) || defined(_M_ARM)
int cpucount = ms_factory_get_cpu_count(f->factory);
if (cpucount == 1){
opusComplexity = 0; /* set complexity to 0 for single processor arm devices */
}else if (cpucount == 2) {
opusComplexity = 5;
}
#endif
}
if (opusComplexity != -1){
ms_message("Set Opus complexity to %d", opusComplexity);
opus_encoder_ctl(d->state, OPUS_SET_COMPLEXITY(opusComplexity));
} /*otherwise we let opus with its default value, which is 9*/
error = opus_encoder_ctl(d->state, OPUS_SET_PACKET_LOSS_PERC(10));
if (error != OPUS_OK) {
ms_error("Could not set default loss percentage to opus encoder: %s", opus_strerror(error));
}
/* set the encoder parameters: VBR, IN_BAND_FEC, DTX and bitrate settings */
ms_opus_enc_set_vbr(f);
ms_opus_enc_set_inbandfec(f);
ms_opus_enc_set_dtx(f);
/* if decoder prefers mono signal, force encoder to output mono signal */
if (d->stereo == 0) {
error = opus_encoder_ctl(d->state, OPUS_SET_FORCE_CHANNELS(1));
if (error != OPUS_OK) {
ms_error("could not force mono channel to opus encoder: %s", opus_strerror(error));
}
if (d->channels == 2) ms_message("Opus encoder configured to encode mono despite it is feed with stereo.");
}else if (d->channels == 2){
ms_message("Opus encoder configured to encode stereo.");
}
ms_filter_lock(f);
// set bitrate wasn't call, compute it with the default network bitrate (36000)
if (d->bitrate==-1) {
compute_max_bitrate(d, 0);
}
apply_max_bitrate(d);
ms_filter_unlock(f);
}