forked from mirrors/linphone-iphone
78 lines
3 KiB
C++
78 lines
3 KiB
C++
/*
|
|
* payload-type-handler.h
|
|
* Copyright (C) 2010-2017 Belledonne Communications SARL
|
|
*
|
|
* 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 2
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef _PAYLOAD_TYPE_HANDLER_H_
|
|
#define _PAYLOAD_TYPE_HANDLER_H_
|
|
|
|
#include "linphone/utils/general.h"
|
|
|
|
#include "c-wrapper/internal/c-sal.h"
|
|
|
|
#define PAYLOAD_TYPE_ENABLED PAYLOAD_TYPE_USER_FLAG_0
|
|
#define PAYLOAD_TYPE_BITRATE_OVERRIDE PAYLOAD_TYPE_USER_FLAG_3
|
|
#define PAYLOAD_TYPE_FROZEN_NUMBER PAYLOAD_TYPE_USER_FLAG_4
|
|
|
|
// =============================================================================
|
|
|
|
L_DECL_C_STRUCT(LinphoneCore);
|
|
|
|
LINPHONE_BEGIN_NAMESPACE
|
|
|
|
struct VbrCodecBitrate {
|
|
int maxAvailableBitrate;
|
|
int minClockRate;
|
|
int recommendedBitrate;
|
|
};
|
|
|
|
class PayloadTypeHandler {
|
|
public:
|
|
explicit PayloadTypeHandler (LinphoneCore *core) : core(core) {}
|
|
|
|
bctbx_list_t *makeCodecsList (SalStreamType type, int bandwidthLimit, int maxCodecs, const bctbx_list_t *previousList);
|
|
|
|
static bool bandwidthIsGreater (int bandwidth1, int bandwidth2);
|
|
static int getAudioPayloadTypeBandwidth (const OrtpPayloadType *pt, int maxBandwidth);
|
|
static double getAudioPayloadTypeBandwidthFromCodecBitrate (const OrtpPayloadType *pt);
|
|
static int getMaxCodecSampleRate (const bctbx_list_t *codecs);
|
|
static int getMinBandwidth (int downBandwidth, int upBandwidth);
|
|
static int getRemainingBandwidthForVideo (int total, int audio);
|
|
static bool isPayloadTypeNumberAvailable (const bctbx_list_t *codecs, int number, const OrtpPayloadType *ignore);
|
|
|
|
private:
|
|
static int findPayloadTypeNumber (const bctbx_list_t *assigned, const OrtpPayloadType *pt);
|
|
static bool hasTelephoneEventPayloadType (const bctbx_list_t *tev, int rate);
|
|
static bool isPayloadTypeUsableForBandwidth (const OrtpPayloadType *pt, int bandwidthLimit);
|
|
static int lookupTypicalVbrBitrate (int maxBandwidth, int clockRate);
|
|
|
|
void assignPayloadTypeNumbers (const bctbx_list_t *codecs);
|
|
bctbx_list_t *createSpecialPayloadTypes (const bctbx_list_t *codecs);
|
|
bctbx_list_t *createTelephoneEventPayloadTypes (const bctbx_list_t *codecs);
|
|
bool isPayloadTypeUsable (const OrtpPayloadType *pt);
|
|
|
|
static const int udpHeaderSize;
|
|
static const int rtpHeaderSize;
|
|
static const int ipv4HeaderSize;
|
|
static const VbrCodecBitrate defaultVbrCodecBitrates[];
|
|
|
|
LinphoneCore *core = nullptr;
|
|
};
|
|
|
|
LINPHONE_END_NAMESPACE
|
|
|
|
#endif // ifndef _PAYLOAD_TYPE_HANDLER_H_
|