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https://git.jami.net/savoirfairelinux/jami-daemon.git
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104 lines
4.0 KiB
C++
104 lines
4.0 KiB
C++
/*
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* Copyright (C) 2004-2012 Savoir-Faire Linux Inc.
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* Author: Alexandre Savard <alexandre.savard@savoirfairelinux.com>
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* Author: Emmanuel Milou <emmanuel.milou@savoirfairelinux.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Additional permission under GNU GPL version 3 section 7:
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*
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* If you modify this program, or any covered work, by linking or
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* combining it with the OpenSSL project's OpenSSL library (or a
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* modified version of that library), containing parts covered by the
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* terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
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* grants you additional permission to convey the resulting work.
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* Corresponding Source for a non-source form of such a combination
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* shall include the source code for the parts of OpenSSL used as well
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* as that of the covered work.
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*/
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#include "sfl_types.h"
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#include "audiocodec.h"
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#include "noncopyable.h"
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#include "array_size.h"
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#include <speex/speex.h>
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#include <cassert>
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class Speex : public sfl::AudioCodec {
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public:
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Speex(int payload, unsigned clockRate, unsigned frameSize,
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unsigned bitRate, bool dynamicPayload, const SpeexMode *mode) :
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sfl::AudioCodec(payload, "speex", clockRate, frameSize, 1),
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speex_dec_bits_(),
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speex_enc_bits_(),
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speex_dec_state_(0),
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speex_enc_state_(0),
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speex_frame_size_(0) {
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assert(payload >= 110 && payload <= 112);
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assert(110 == PAYLOAD_CODEC_SPEEX_8000 &&
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111 == PAYLOAD_CODEC_SPEEX_16000 &&
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112 == PAYLOAD_CODEC_SPEEX_32000);
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bitrate_ = bitRate;
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hasDynamicPayload_ = dynamicPayload;
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// Init the decoder struct
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speex_bits_init(&speex_dec_bits_);
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speex_dec_state_ = speex_decoder_init(mode);
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// Init the encoder struct
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speex_bits_init(&speex_enc_bits_);
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speex_enc_state_ = speex_encoder_init(mode);
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speex_encoder_ctl(speex_enc_state_, SPEEX_SET_SAMPLING_RATE, &clockRate_);
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speex_decoder_ctl(speex_dec_state_, SPEEX_GET_FRAME_SIZE, &speex_frame_size_);
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}
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~Speex()
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{
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// Destroy the decoder struct
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speex_bits_destroy(&speex_dec_bits_);
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speex_decoder_destroy(speex_dec_state_);
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speex_dec_state_ = 0;
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// Destroy the encoder struct
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speex_bits_destroy(&speex_enc_bits_);
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speex_encoder_destroy(speex_enc_state_);
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speex_enc_state_ = 0;
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}
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private:
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NON_COPYABLE(Speex);
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virtual int decode(SFLAudioSample *dst, unsigned char *src, size_t buf_size) {
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speex_bits_read_from(&speex_dec_bits_, (char*) src, buf_size);
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speex_decode_int(speex_dec_state_, &speex_dec_bits_, dst);
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return frameSize_;
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}
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virtual int encode(unsigned char *dst, SFLAudioSample *src, size_t buf_size) {
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speex_bits_reset(&speex_enc_bits_);
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speex_encode_int(speex_enc_state_, src, &speex_enc_bits_);
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return speex_bits_write(&speex_enc_bits_, (char*) dst, buf_size);
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}
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SpeexBits speex_dec_bits_;
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SpeexBits speex_enc_bits_;
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void *speex_dec_state_;
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void *speex_enc_state_;
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int speex_frame_size_;
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};
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