mirror of
https://github.com/irungentoo/toxcore.git
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114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/** codec.h
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*
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* Audio and video codec intitialization, encoding/decoding and playback
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*
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* Copyright (C) 2013 Tox project All Rights Reserved.
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*
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* This file is part of Tox.
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*
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* Tox 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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* Tox 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 Tox. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef _CODEC_H_
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#define _CODEC_H_
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#include <stdio.h>
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#include <math.h>
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#include <pthread.h>
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#include <vpx/vpx_decoder.h>
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#include <vpx/vpx_encoder.h>
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#include <vpx/vp8dx.h>
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#include <vpx/vp8cx.h>
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#define VIDEO_CODEC_DECODER_INTERFACE (vpx_codec_vp8_dx())
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#define VIDEO_CODEC_ENCODER_INTERFACE (vpx_codec_vp8_cx())
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/* Audio encoding/decoding */
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#include <opus.h>
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typedef enum _Capabilities {
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none,
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a_encoding = 1 << 0,
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a_decoding = 1 << 1,
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v_encoding = 1 << 2,
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v_decoding = 1 << 3
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} Capabilities;
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extern const uint16_t min_jbuf_size;
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typedef struct _CodecState {
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/* video encoding */
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vpx_codec_ctx_t v_encoder;
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uint32_t frame_counter;
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/* video decoding */
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vpx_codec_ctx_t v_decoder;
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int bitrate;
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int max_width;
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int max_height;
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/* audio encoding */
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OpusEncoder *audio_encoder;
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int audio_bitrate;
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int audio_sample_rate;
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/* audio decoding */
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OpusDecoder *audio_decoder;
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uint64_t capabilities; /* supports*/
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/* Voice activity detection */
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uint32_t EVAD_tolerance; /* In frames */
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uint32_t EVAD_tolerance_cr;
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} CodecState;
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typedef struct _JitterBuffer {
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RTPMessage **queue;
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unsigned int size;
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unsigned int capacity;
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uint16_t bottom;
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uint16_t top;
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} JitterBuffer;
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JitterBuffer *create_queue(unsigned int capacity);
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void terminate_queue(JitterBuffer *q);
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void queue(JitterBuffer *q, RTPMessage *pk);
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RTPMessage *dequeue(JitterBuffer *q, int *success);
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CodecState *codec_init_session ( uint32_t audio_bitrate,
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uint16_t audio_frame_duration,
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uint32_t audio_sample_rate,
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uint32_t audio_channels,
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uint32_t audio_VAD_tolerance_ms,
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uint16_t video_width,
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uint16_t video_height,
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uint32_t video_bitrate);
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void codec_terminate_session(CodecState *cs);
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/* Reconfigure video encoder
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return 0 on success.
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return -1 on failure. */
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int reconfigure_video_encoder_resolution(CodecState *cs, uint16_t width, uint16_t height);
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int reconfigure_video_encoder_bitrate(CodecState *cs, uint32_t video_bitrate);
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/* Calculate energy and return 1 if has voice, 0 if not */
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int energy_VAD(CodecState *cs, int16_t *PCM, uint16_t frame_size, float energy);
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#endif /* _CODEC_H_ */
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