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Use Opus for VoIP

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Server/client VoIP protocol is handled by adding new cvars
cl_voipProtocol and sv_voipProtocol, sv_voip and cl_voip
are used to auto set/clear them. All users need to touch
are cl/sv_voip as 0 or 1 just like before.

Old Speex VoIP packets in demos are skipped.
New VoIP packets are skipped in demos if sv_voipProtocol
doesn't match cl_voipProtocol.

Notable difference between usage of speex and opus codecs,
when using Speex client would be sent 80ms at a time.
Using Opus, 60ms is sent at a time. This was changed because
the Opus codec supports encoding up to 60ms at a time.
(Simpler to send only one codec frame in a packet.)
This commit is contained in:
Zack Middleton 2013-12-10 21:14:13 -06:00
parent fe619680f8
commit 615b73288f
13 changed files with 167 additions and 240 deletions
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21
code/client/client.h
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@ -35,8 +35,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#endif /* USE_CURL */
#ifdef USE_VOIP
#include "speex/speex.h"
#include "speex/speex_preprocess.h"
#include <opus.h>
#endif
// file full of random crap that gets used to create cl_guid
@ -238,14 +237,11 @@ typedef struct {
#ifdef USE_VOIP
qboolean voipEnabled;
qboolean speexInitialized;
int speexFrameSize;
int speexSampleRate;
qboolean voipCodecInitialized;
// incoming data...
// !!! FIXME: convert from parallel arrays to array of a struct.
SpeexBits speexDecoderBits[MAX_CLIENTS];
void *speexDecoder[MAX_CLIENTS];
OpusDecoder *opusDecoder[MAX_CLIENTS];
byte voipIncomingGeneration[MAX_CLIENTS];
int voipIncomingSequence[MAX_CLIENTS];
float voipGain[MAX_CLIENTS];
@ -257,9 +253,7 @@ typedef struct {
// then we are sending to clientnum i.
uint8_t voipTargets[(MAX_CLIENTS + 7) / 8];
uint8_t voipFlags;
SpeexPreprocessState *speexPreprocessor;
SpeexBits speexEncoderBits;
void *speexEncoder;
OpusEncoder *opusEncoder;
int voipOutgoingDataSize;
int voipOutgoingDataFrames;
int voipOutgoingSequence;
@ -447,6 +441,13 @@ extern cvar_t *cl_voipGainDuringCapture;
extern cvar_t *cl_voipCaptureMult;
extern cvar_t *cl_voipShowMeter;
extern cvar_t *cl_voip;
// 20ms at 48k
#define VOIP_MAX_FRAME_SAMPLES ( 20 * 48 )
// 3 frame is 60ms of audio, the max opus will encode at once
#define VOIP_MAX_PACKET_FRAMES 3
#define VOIP_MAX_PACKET_SAMPLES ( VOIP_MAX_FRAME_SAMPLES * VOIP_MAX_PACKET_FRAMES )
#endif
//=================================================