You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
394 lines
10 KiB
394 lines
10 KiB
/* |
|
voice.c - voice chat implementation |
|
Copyright (C) 2022 Velaron |
|
Copyright (C) 2022 SNMetamorph |
|
|
|
This program is free software: you can redistribute it and/or modify |
|
it under the terms of the GNU General Public License as published by |
|
the Free Software Foundation, either version 3 of the License, or |
|
(at your option) any later version. |
|
|
|
This program is distributed in the hope that it will be useful, |
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
GNU General Public License for more details. |
|
*/ |
|
|
|
#include "voice.h" |
|
|
|
wavdata_t *input_file; |
|
fs_offset_t input_pos; |
|
|
|
voice_state_t voice; |
|
|
|
CVAR_DEFINE_AUTO( voice_enable, "1", FCVAR_PRIVILEGED|FCVAR_ARCHIVE, "enable voice chat" ); |
|
CVAR_DEFINE_AUTO( voice_loopback, "0", FCVAR_PRIVILEGED, "loopback voice back to the speaker" ); |
|
CVAR_DEFINE_AUTO( voice_scale, "1.0", FCVAR_PRIVILEGED|FCVAR_ARCHIVE, "incoming voice volume scale" ); |
|
CVAR_DEFINE_AUTO( voice_avggain, "0.5", FCVAR_PRIVILEGED|FCVAR_ARCHIVE, "automatic voice gain control (average)" ); |
|
CVAR_DEFINE_AUTO( voice_maxgain, "5.0", FCVAR_PRIVILEGED|FCVAR_ARCHIVE, "automatic voice gain control (maximum)" ); |
|
CVAR_DEFINE_AUTO( voice_inputfromfile, "0", FCVAR_PRIVILEGED, "input voice from voice_input.wav" ); |
|
|
|
static const char* Voice_GetBandwidthTypeName( int bandwidthType ) |
|
{ |
|
switch( bandwidthType ) |
|
{ |
|
case OPUS_BANDWIDTH_FULLBAND: return "Full Band (20 kHz)"; |
|
case OPUS_BANDWIDTH_SUPERWIDEBAND: return "Super Wide Band (12 kHz)"; |
|
case OPUS_BANDWIDTH_WIDEBAND: return "Wide Band (8 kHz)"; |
|
case OPUS_BANDWIDTH_MEDIUMBAND: return "Medium Band (6 kHz)"; |
|
case OPUS_BANDWIDTH_NARROWBAND: return "Narrow Band (4 kHz)"; |
|
default: return "Unknown"; |
|
} |
|
} |
|
|
|
static void Voice_CodecInfo_f( void ) |
|
{ |
|
int encoderComplexity; |
|
opus_int32 encoderBitrate; |
|
opus_int32 encoderBandwidthType; |
|
|
|
opus_encoder_ctl( voice.encoder, OPUS_GET_BITRATE( &encoderBitrate )); |
|
opus_encoder_ctl( voice.encoder, OPUS_GET_COMPLEXITY( &encoderComplexity )); |
|
opus_encoder_ctl( voice.encoder, OPUS_GET_BANDWIDTH( &encoderBandwidthType )); |
|
|
|
Con_Printf( "Encoder:\n" ); |
|
Con_Printf( " Bitrate: %.3f kbps\n", encoderBitrate / 1000.0f ); |
|
Con_Printf( " Complexity: %d\n", encoderComplexity ); |
|
Con_Printf( " Bandwidth: " ); |
|
Con_Printf( Voice_GetBandwidthTypeName( encoderBandwidthType )); |
|
Con_Printf( "\n" ); |
|
} |
|
|
|
void Voice_RegisterCvars( void ) |
|
{ |
|
Cvar_RegisterVariable( &voice_enable ); |
|
Cvar_RegisterVariable( &voice_loopback ); |
|
Cvar_RegisterVariable( &voice_scale ); |
|
Cvar_RegisterVariable( &voice_avggain ); |
|
Cvar_RegisterVariable( &voice_maxgain ); |
|
Cvar_RegisterVariable( &voice_inputfromfile ); |
|
Cmd_AddClientCommand( "voice_codecinfo", Voice_CodecInfo_f ); |
|
} |
|
|
|
static void Voice_Status( int entindex, qboolean bTalking ) |
|
{ |
|
clgame.dllFuncs.pfnVoiceStatus( entindex, bTalking ); |
|
} |
|
|
|
static uint Voice_GetFrameSize( float durationMsec ) |
|
{ |
|
return voice.channels * voice.width * (( float )voice.samplerate / ( 1000.0f / durationMsec )); |
|
} |
|
|
|
static void Voice_ApplyGainAdjust( opus_int16 *samples, int count ) |
|
{ |
|
float gain, modifiedMax; |
|
int average, adjustedSample; |
|
int blockOffset = 0; |
|
|
|
for (;;) |
|
{ |
|
int i; |
|
int localMax = 0; |
|
int localSum = 0; |
|
int blockSize = Q_min( count - ( blockOffset + voice.autogain.block_size ), voice.autogain.block_size ); |
|
|
|
if( blockSize < 1 ) |
|
break; |
|
|
|
for( i = 0; i < blockSize; ++i ) |
|
{ |
|
int sample = samples[blockOffset + i]; |
|
if( abs( sample ) > localMax ) { |
|
localMax = abs( sample ); |
|
} |
|
localSum += sample; |
|
|
|
gain = voice.autogain.current_gain + i * voice.autogain.gain_multiplier; |
|
adjustedSample = Q_min( 32767, Q_max(( int )( sample * gain ), -32768 )); |
|
samples[blockOffset + i] = adjustedSample; |
|
} |
|
|
|
if( blockOffset % voice.autogain.block_size == 0 ) |
|
{ |
|
average = localSum / blockSize; |
|
modifiedMax = average + ( localMax - average ) * voice_avggain.value; |
|
voice.autogain.current_gain = voice.autogain.next_gain * voice_scale.value; |
|
voice.autogain.next_gain = Q_min( 32767.0f / modifiedMax, voice_maxgain.value ) * voice_scale.value; |
|
voice.autogain.gain_multiplier = ( voice.autogain.next_gain - voice.autogain.current_gain ) / ( voice.autogain.block_size - 1 ); |
|
} |
|
blockOffset += blockSize; |
|
} |
|
} |
|
|
|
// parameters currently unused |
|
qboolean Voice_Init( const char *pszCodecName, int quality ) |
|
{ |
|
int err; |
|
|
|
if ( !voice_enable.value ) |
|
return false; |
|
|
|
Voice_DeInit(); |
|
|
|
voice.initialized = true; |
|
voice.channels = 1; |
|
voice.width = 2; |
|
voice.samplerate = SOUND_48k; |
|
voice.frame_size = Voice_GetFrameSize( 40.0f ); |
|
voice.autogain.block_size = 128; |
|
|
|
if ( !VoiceCapture_Init() ) |
|
{ |
|
Voice_DeInit(); |
|
return false; |
|
} |
|
|
|
voice.encoder = opus_encoder_create( voice.samplerate, voice.channels, OPUS_APPLICATION_VOIP, &err ); |
|
|
|
if( err != OPUS_OK ) |
|
return false; |
|
|
|
voice.decoder = opus_decoder_create( voice.samplerate, voice.channels, &err ); |
|
|
|
switch( quality ) |
|
{ |
|
case 1: // 4800 bits per second, <4 kHz bandwidth |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BITRATE( 4800 )); |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BANDWIDTH( OPUS_BANDWIDTH_NARROWBAND )); |
|
break; |
|
case 2: // 12000 bits per second, <6 kHz bandwidth |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BITRATE( 12000 )); |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BANDWIDTH( OPUS_BANDWIDTH_MEDIUMBAND )); |
|
break; |
|
case 4: // automatic bitrate, full band (20 kHz) |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BITRATE( OPUS_AUTO )); |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BANDWIDTH( OPUS_BANDWIDTH_FULLBAND )); |
|
break; |
|
case 5: // maximum bitrate, full band (20 kHz) |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BITRATE( OPUS_BITRATE_MAX )); |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BANDWIDTH( OPUS_BANDWIDTH_FULLBAND )); |
|
break; |
|
default: // 36000 bits per second, <12 kHz bandwidth |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BITRATE( 36000 )); |
|
opus_encoder_ctl( voice.encoder, OPUS_SET_BANDWIDTH( OPUS_BANDWIDTH_SUPERWIDEBAND )); |
|
break; |
|
} |
|
|
|
return err == OPUS_OK; |
|
} |
|
|
|
void Voice_DeInit( void ) |
|
{ |
|
if ( !voice.initialized ) |
|
return; |
|
|
|
Voice_RecordStop(); |
|
|
|
opus_encoder_destroy( voice.encoder ); |
|
opus_decoder_destroy( voice.decoder ); |
|
|
|
voice.initialized = false; |
|
} |
|
|
|
uint Voice_GetCompressedData( byte *out, uint maxsize, uint *frames ) |
|
{ |
|
uint ofs, size = 0; |
|
|
|
if ( input_file ) |
|
{ |
|
uint numbytes; |
|
double updateInterval; |
|
|
|
updateInterval = cl.mtime[0] - cl.mtime[1]; |
|
numbytes = updateInterval * voice.samplerate * voice.width * voice.channels; |
|
numbytes = Q_min( numbytes, input_file->size - input_pos ); |
|
numbytes = Q_min( numbytes, sizeof( voice.input_buffer ) - voice.input_buffer_pos ); |
|
|
|
memcpy( voice.input_buffer + voice.input_buffer_pos, input_file->buffer + input_pos, numbytes ); |
|
voice.input_buffer_pos += numbytes; |
|
input_pos += numbytes; |
|
} |
|
|
|
for ( ofs = 0; voice.input_buffer_pos - ofs >= voice.frame_size && ofs <= voice.input_buffer_pos; ofs += voice.frame_size ) |
|
{ |
|
int bytes; |
|
|
|
if (!input_file) |
|
{ |
|
// adjust gain before encoding, but only for input from voice |
|
Voice_ApplyGainAdjust((opus_int16*)voice.input_buffer + ofs, voice.frame_size); |
|
} |
|
|
|
bytes = opus_encode( voice.encoder, (const opus_int16*)(voice.input_buffer + ofs), voice.frame_size / voice.width, out + size, maxsize ); |
|
memmove( voice.input_buffer, voice.input_buffer + voice.frame_size, sizeof( voice.input_buffer ) - voice.frame_size ); |
|
voice.input_buffer_pos -= voice.frame_size; |
|
|
|
if ( bytes > 0 ) |
|
{ |
|
size += bytes; |
|
(*frames)++; |
|
} |
|
} |
|
|
|
return size; |
|
} |
|
|
|
void Voice_Idle( float frametime ) |
|
{ |
|
int i; |
|
|
|
if ( !voice_enable.value ) |
|
{ |
|
Voice_DeInit(); |
|
return; |
|
} |
|
|
|
if ( voice.talking_ack ) |
|
{ |
|
voice.talking_timeout += frametime; |
|
if( voice.talking_timeout > 0.2f ) |
|
{ |
|
voice.talking_ack = false; |
|
Voice_Status( -2, false ); |
|
} |
|
} |
|
|
|
for ( i = 0; i < 32; i++ ) |
|
{ |
|
if ( voice.players_status[i].talking_ack ) |
|
{ |
|
voice.players_status[i].talking_timeout += frametime; |
|
if ( voice.players_status[i].talking_timeout > 0.2f ) |
|
{ |
|
voice.players_status[i].talking_ack = false; |
|
if ( i < cl.maxclients ) |
|
Voice_Status( i, false ); |
|
} |
|
} |
|
} |
|
} |
|
|
|
qboolean Voice_IsRecording( void ) |
|
{ |
|
return voice.is_recording; |
|
} |
|
|
|
void Voice_RecordStop( void ) |
|
{ |
|
if ( input_file ) |
|
{ |
|
FS_FreeSound( input_file ); |
|
input_file = NULL; |
|
} |
|
|
|
voice.input_buffer_pos = 0; |
|
memset( voice.input_buffer, 0, sizeof( voice.input_buffer ) ); |
|
|
|
if ( Voice_IsRecording() ) |
|
Voice_Status( -1, false ); |
|
|
|
VoiceCapture_RecordStop(); |
|
|
|
voice.is_recording = false; |
|
} |
|
|
|
void Voice_RecordStart( void ) |
|
{ |
|
Voice_RecordStop(); |
|
|
|
if ( voice_inputfromfile.value ) |
|
{ |
|
input_file = FS_LoadSound( "voice_input.wav", NULL, 0 ); |
|
|
|
if ( input_file ) |
|
{ |
|
Sound_Process( &input_file, voice.samplerate, voice.width, SOUND_RESAMPLE ); |
|
input_pos = 0; |
|
|
|
voice.start_time = Sys_DoubleTime(); |
|
voice.is_recording = true; |
|
} |
|
else |
|
{ |
|
FS_FreeSound( input_file ); |
|
input_file = NULL; |
|
} |
|
} |
|
|
|
if ( !Voice_IsRecording() ) |
|
voice.is_recording = VoiceCapture_RecordStart(); |
|
|
|
if ( Voice_IsRecording() ) |
|
Voice_Status( -1, true ); |
|
} |
|
|
|
void Voice_Disconnect( void ) |
|
{ |
|
int i; |
|
|
|
Voice_RecordStop(); |
|
for( i = 0; i <= 32; i++ ) { |
|
Voice_Status( i, false ); |
|
} |
|
} |
|
|
|
void Voice_AddIncomingData( int ent, const byte *data, uint size, uint frames ) |
|
{ |
|
int samples = opus_decode( voice.decoder, data, size, (short *)voice.decompress_buffer, voice.frame_size / voice.width * frames, false ); |
|
|
|
if ( samples > 0 ) |
|
Voice_StartChannel( samples, voice.decompress_buffer, ent ); |
|
} |
|
|
|
void CL_AddVoiceToDatagram( void ) |
|
{ |
|
uint size, frames = 0; |
|
|
|
if ( cls.state != ca_active || !Voice_IsRecording() ) |
|
return; |
|
|
|
size = Voice_GetCompressedData( voice.output_buffer, sizeof( voice.output_buffer ), &frames ); |
|
|
|
if ( size > 0 && MSG_GetNumBytesLeft( &cls.datagram ) >= size + 32 ) |
|
{ |
|
MSG_BeginClientCmd( &cls.datagram, clc_voicedata ); |
|
MSG_WriteByte( &cls.datagram, Voice_GetLoopback() ); |
|
MSG_WriteByte( &cls.datagram, frames ); |
|
MSG_WriteShort( &cls.datagram, size ); |
|
MSG_WriteBytes( &cls.datagram, voice.output_buffer, size ); |
|
} |
|
} |
|
|
|
qboolean Voice_GetLoopback( void ) |
|
{ |
|
return voice_loopback.value; |
|
} |
|
|
|
void Voice_LocalPlayerTalkingAck( void ) |
|
{ |
|
if ( !voice.talking_ack ) |
|
{ |
|
Voice_Status( -2, true ); |
|
} |
|
|
|
voice.talking_ack = true; |
|
voice.talking_timeout = 0.0f; |
|
} |
|
|
|
void Voice_PlayerTalkingAck(int playerIndex) |
|
{ |
|
if( !voice.players_status[playerIndex].talking_ack ) |
|
{ |
|
Voice_Status( playerIndex, true ); |
|
} |
|
|
|
voice.players_status[playerIndex].talking_ack = true; |
|
voice.players_status[playerIndex].talking_timeout = 0.0f; |
|
} |
|
|
|
void Voice_StartChannel( uint samples, byte *data, int entnum ) |
|
{ |
|
SND_ForceInitMouth( entnum ); |
|
S_RawEntSamples( entnum, samples, voice.samplerate, voice.width, voice.channels, data, 255 ); |
|
}
|
|
|