1 files changed, 116 insertions, 0 deletions
diff --git a/protocols/Tox/toxcore/toxav/codec.h b/protocols/Tox/toxcore/toxav/codec.h
new file mode 100644
index 0000000000..db4fbea0dc
--- /dev/null
+++ b/protocols/Tox/toxcore/toxav/codec.h
@@ -0,0 +1,116 @@
+/**  codec.h
+ *
+ *   Audio and video codec intitialization, encoding/decoding and playback
+ *
+ *   Copyright (C) 2013 Tox project All Rights Reserved.
+ *
+ *   This file is part of Tox.
+ *
+ *   Tox 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.
+ *
+ *   Tox 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 Tox. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _CODEC_H_
+#define _CODEC_H_
+
+#include <stdio.h>
+#include <math.h>
+#include <pthread.h>
+
+#include <vpx/vpx_decoder.h>
+#include <vpx/vpx_encoder.h>
+#include <vpx/vp8dx.h>
+#include <vpx/vp8cx.h>
+#define VIDEO_CODEC_DECODER_INTERFACE (vpx_codec_vp8_dx())
+#define VIDEO_CODEC_ENCODER_INTERFACE (vpx_codec_vp8_cx())
+
+/* Audio encoding/decoding */
+#include <opus.h>
+
+typedef enum _Capabilities {
+    none,
+    a_encoding = 1 << 0,
+    a_decoding = 1 << 1,
+    v_encoding = 1 << 2,
+    v_decoding = 1 << 3
+} Capabilities;
+
+extern const uint16_t min_jbuf_size;
+
+typedef struct _CodecState {
+
+    /* video encoding */
+    vpx_codec_ctx_t  v_encoder;
+    uint32_t frame_counter;
+
+    /* video decoding */
+    vpx_codec_ctx_t  v_decoder;
+    int bitrate;
+    int max_width;
+    int max_height;
+
+    /* audio encoding */
+    OpusEncoder *audio_encoder;
+    int audio_bitrate;
+    int audio_sample_rate;
+    int audio_encoder_channels;
+
+    /* audio decoding */
+    OpusDecoder *audio_decoder;
+    int audio_decoder_channels;
+
+    uint64_t capabilities; /* supports*/
+
+    /* Voice activity detection */
+    uint32_t EVAD_tolerance; /* In frames */
+    uint32_t EVAD_tolerance_cr;
+} CodecState;
+
+
+typedef struct _JitterBuffer {
+    RTPMessage **queue;
+    uint32_t size;
+    uint32_t capacity;
+    uint16_t bottom;
+    uint16_t top;
+} JitterBuffer;
+
+JitterBuffer *create_queue(unsigned int capacity);
+void terminate_queue(JitterBuffer *q);
+void queue(JitterBuffer *q, RTPMessage *pk);
+RTPMessage *dequeue(JitterBuffer *q, int *success);
+
+
+CodecState *codec_init_session ( uint32_t audio_bitrate,
+                                 uint16_t audio_frame_duration,
+                                 uint32_t audio_sample_rate,
+                                 uint32_t encoder_audio_channels,
+                                 uint32_t decoder_audio_channels,
+                                 uint32_t audio_VAD_tolerance_ms,
+                                 uint16_t max_video_width,
+                                 uint16_t max_video_height,
+                                 uint32_t video_bitrate );
+
+void codec_terminate_session(CodecState *cs);
+
+/* Reconfigure video encoder
+   return 0 on success.
+   return -1 on failure. */
+int reconfigure_video_encoder_resolution(CodecState *cs, uint16_t width, uint16_t height);
+int reconfigure_video_encoder_bitrate(CodecState *cs, uint32_t video_bitrate);
+
+/* Calculate energy and return 1 if has voice, 0 if not */
+int energy_VAD(CodecState *cs, int16_t *PCM, uint16_t frame_size, float energy);
+
+#endif /* _CODEC_H_ */