1 files changed, 389 insertions, 0 deletions
diff --git a/protocols/Tox/tox/include/toxav.h b/protocols/Tox/tox/include/toxav.h
new file mode 100644
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+++ b/protocols/Tox/tox/include/toxav.h
@@ -0,0 +1,389 @@
+/**  toxav.h
+ *
+ *   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 __TOXAV
+#define __TOXAV
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* vpx_image_t */
+#include <vpx/vpx_image.h>
+
+typedef void ( *ToxAVCallback ) ( void *agent, int32_t call_idx, void *arg );
+typedef struct _ToxAv ToxAv;
+
+#ifndef __TOX_DEFINED__
+#define __TOX_DEFINED__
+typedef struct Tox Tox;
+#endif
+
+#define RTP_PAYLOAD_SIZE 65535
+
+
+/**
+ * @brief Callbacks ids that handle the call states.
+ */
+typedef enum {
+    /* Requests */
+    av_OnInvite,
+    av_OnStart,
+    av_OnCancel,
+    av_OnReject,
+    av_OnEnd,
+
+    /* Responses */
+    av_OnRinging,
+    av_OnStarting,
+    av_OnEnding,
+
+    /* Protocol */
+    av_OnRequestTimeout,
+    av_OnPeerTimeout,
+    av_OnMediaChange
+} ToxAvCallbackID;
+
+
+/**
+ * @brief Call type identifier.
+ */
+typedef enum {
+    TypeAudio = 192,
+    TypeVideo
+} ToxAvCallType;
+
+
+typedef enum {
+    av_CallNonExistant = -1,
+    av_CallInviting, /* when sending call invite */
+    av_CallStarting, /* when getting call invite */
+    av_CallActive,
+    av_CallHold,
+    av_CallHanged_up
+} ToxAvCallState;
+
+/**
+ * @brief Error indicators.
+ */
+typedef enum {
+    ErrorNone = 0,
+    ErrorInternal = -1, /* Internal error */
+    ErrorAlreadyInCall = -2, /* Already has an active call */
+    ErrorNoCall = -3, /* Trying to perform call action while not in a call */
+    ErrorInvalidState = -4, /* Trying to perform call action while in invalid state*/
+    ErrorNoRtpSession = -5, /* Trying to perform rtp action on invalid session */
+    ErrorAudioPacketLost = -6, /* Indicating packet loss */
+    ErrorStartingAudioRtp = -7, /* Error in toxav_prepare_transmission() */
+    ErrorStartingVideoRtp = -8 , /* Error in toxav_prepare_transmission() */
+    ErrorTerminatingAudioRtp = -9, /* Returned in toxav_kill_transmission() */
+    ErrorTerminatingVideoRtp = -10, /* Returned in toxav_kill_transmission() */
+    ErrorPacketTooLarge = -11, /* Buffer exceeds size while encoding */
+    ErrorInvalidCodecState = -12, /* Codec state not initialized */
+
+} ToxAvError;
+
+
+/**
+ * @brief Locally supported capabilities.
+ */
+typedef enum {
+    AudioEncoding = 1 << 0,
+    AudioDecoding = 1 << 1,
+    VideoEncoding = 1 << 2,
+    VideoDecoding = 1 << 3
+} ToxAvCapabilities;
+
+
+/**
+ * @brief Encoding settings.
+ */
+typedef struct _ToxAvCodecSettings {
+    ToxAvCallType call_type;
+
+    uint32_t video_bitrate; /* In kbits/s */
+    uint16_t max_video_width; /* In px */
+    uint16_t max_video_height; /* In px */
+
+    uint32_t audio_bitrate; /* In bits/s */
+    uint16_t audio_frame_duration; /* In ms */
+    uint32_t audio_sample_rate; /* In Hz */
+    uint32_t audio_channels;
+} ToxAvCSettings;
+
+extern const ToxAvCSettings av_DefaultSettings;
+extern const uint32_t av_jbufdc; /* Jitter buffer default capacity */
+extern const uint32_t av_VADd; /* VAD default treshold */
+
+/**
+ * @brief Start new A/V session. There can only be one session at the time. If you register more
+ *        it will result in undefined behaviour.
+ *
+ * @param messenger The messenger handle.
+ * @param userdata The agent handling A/V session (i.e. phone).
+ * @param video_width Width of video frame.
+ * @param video_height Height of video frame.
+ * @return ToxAv*
+ * @retval NULL On error.
+ */
+ToxAv *toxav_new(Tox *messenger, int32_t max_calls);
+
+/**
+ * @brief Remove A/V session.
+ *
+ * @param av Handler.
+ * @return void
+ */
+void toxav_kill(ToxAv *av);
+
+/**
+ * @brief Register callback for call state.
+ *
+ * @param av Handler.
+ * @param callback The callback
+ * @param id One of the ToxAvCallbackID values
+ * @return void
+ */
+void toxav_register_callstate_callback (ToxAv *av, ToxAVCallback callback, ToxAvCallbackID id, void *userdata);
+
+/**
+ * @brief Register callback for recieving audio data
+ *
+ * @param av Handler.
+ * @param callback The callback
+ * @return void
+ */
+void toxav_register_audio_recv_callback (ToxAv *av, void (*callback)(ToxAv *, int32_t, int16_t *, int, void *),
+        void *user_data);
+
+/**
+ * @brief Register callback for recieving video data
+ *
+ * @param av Handler.
+ * @param callback The callback
+ * @return void
+ */
+void toxav_register_video_recv_callback (ToxAv *av, void (*callback)(ToxAv *, int32_t, vpx_image_t *, void *),
+        void *user_data);
+
+/**
+ * @brief Call user. Use its friend_id.
+ *
+ * @param av Handler.
+ * @param user The user.
+ * @param call_type Call type.
+ * @param ringing_seconds Ringing timeout.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_call(ToxAv *av, int32_t *call_index, int user, const ToxAvCSettings *csettings, int ringing_seconds);
+
+/**
+ * @brief Hangup active call.
+ *
+ * @param av Handler.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_hangup(ToxAv *av, int32_t call_index);
+
+/**
+ * @brief Answer incomming call.
+ *
+ * @param av Handler.
+ * @param call_type Answer with...
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_answer(ToxAv *av, int32_t call_index, const ToxAvCSettings *csettings );
+
+/**
+ * @brief Reject incomming call.
+ *
+ * @param av Handler.
+ * @param reason Optional reason. Set NULL if none.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_reject(ToxAv *av, int32_t call_index, const char *reason);
+
+/**
+ * @brief Cancel outgoing request.
+ *
+ * @param av Handler.
+ * @param reason Optional reason.
+ * @param peer_id peer friend_id
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_cancel(ToxAv *av, int32_t call_index, int peer_id, const char *reason);
+
+/**
+ * @brief Notify peer that we are changing call settings
+ *
+ * @param av Handler.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_change_settings(ToxAv *av, int32_t call_index, const ToxAvCSettings *csettings);
+
+/**
+ * @brief Terminate transmission. Note that transmission will be terminated without informing remote peer.
+ *
+ * @param av Handler.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_stop_call(ToxAv *av, int32_t call_index);
+
+/**
+ * @brief Must be call before any RTP transmission occurs.
+ *
+ * @param av Handler.
+ * @param support_video Is video supported ? 1 : 0
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_prepare_transmission(ToxAv *av, int32_t call_index, uint32_t jbuf_size, uint32_t VAD_treshold,
+                               int support_video);
+
+/**
+ * @brief Call this at the end of the transmission.
+ *
+ * @param av Handler.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_kill_transmission(ToxAv *av, int32_t call_index);
+
+/**
+ * @brief Encode and send video packet.
+ *
+ * @param av Handler.
+ * @param frame The encoded frame.
+ * @param frame_size The size of the encoded frame.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_send_video ( ToxAv *av, int32_t call_index, const uint8_t *frame, unsigned int frame_size);
+
+/**
+ * @brief Send audio frame.
+ *
+ * @param av Handler.
+ * @param data The audio data encoded with toxav_prepare_audio_frame().
+ * @param size Its size in number of bytes.
+ * @return int
+ * @retval 0 Success.
+ * @retval ToxAvError On error.
+ */
+int toxav_send_audio ( ToxAv *av, int32_t call_index, const uint8_t *frame, unsigned int size);
+
+/**
+ * @brief Encode video frame
+ *
+ * @param av Handler
+ * @param dest Where to
+ * @param dest_max Max size
+ * @param input What to encode
+ * @return int
+ * @retval ToxAvError On error.
+ * @retval >0 On success
+ */
+int toxav_prepare_video_frame ( ToxAv *av, int32_t call_index, uint8_t *dest, int dest_max, vpx_image_t *input );
+
+/**
+ * @brief Encode audio frame
+ *
+ * @param av Handler
+ * @param dest dest
+ * @param dest_max Max dest size
+ * @param frame The frame
+ * @param frame_size The frame size
+ * @return int
+ * @retval ToxAvError On error.
+ * @retval >0 On success
+ */
+int toxav_prepare_audio_frame ( ToxAv *av, int32_t call_index, uint8_t *dest, int dest_max, const int16_t *frame,
+                                int frame_size);
+
+/**
+ * @brief Get peer transmission type. It can either be audio or video.
+ *
+ * @param av Handler.
+ * @param peer The peer
+ * @return int
+ * @retval ToxAvCallType On success.
+ * @retval ToxAvError On error.
+ */
+int toxav_get_peer_csettings ( ToxAv *av, int32_t call_index, int peer, ToxAvCSettings *dest );
+
+/**
+ * @brief Get id of peer participating in conversation
+ *
+ * @param av Handler
+ * @param peer peer index
+ * @return int
+ * @retval ToxAvError No peer id
+ */
+int toxav_get_peer_id ( ToxAv *av, int32_t call_index, int peer );
+
+/**
+ * @brief Get current call state
+ *
+ * @param av Handler
+ * @param call_index What call
+ * @return int
+ * @retval ToxAvCallState State id
+ */
+ToxAvCallState toxav_get_call_state ( ToxAv *av, int32_t call_index );
+/**
+ * @brief Is certain capability supported
+ *
+ * @param av Handler
+ * @return int
+ * @retval 1 Yes.
+ * @retval 0 No.
+ */
+int toxav_capability_supported ( ToxAv *av, int32_t call_index, ToxAvCapabilities capability );
+
+
+Tox *toxav_get_tox(ToxAv *av);
+
+int toxav_has_activity ( ToxAv *av, int32_t call_index, int16_t *PCM, uint16_t frame_size, float ref_energy );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __TOXAV */