/*
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mediastreamer2 library - modular sound and video processing and streaming
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Copyright (C) 2006 Simon MORLAT (simon.morlat@linphone.org)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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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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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#ifndef rfc3984_h
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#define rfc3984_h
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#include <mediastreamer2/mscommon.h>
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#include <mediastreamer2/msqueue.h>
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#include <mediastreamer2/msfactory.h>
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/*
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This file declares an API useful to pack/unpack H264 nals as described in RFC3984
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It is part of the public API to allow external H264 plugins use this api.
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*/
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#ifdef __cplusplus
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extern "C"{
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#endif
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typedef enum{
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Rfc3984FrameAvailable = 1,
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Rfc3984FrameCorrupted = 1<<1,
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Rfc3984IsKeyFrame = 1<<2, /*set when a frame has SPS + PPS or IDR (possibly both)*/
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Rfc3984NewSPS = 1<<3,
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Rfc3984NewPPS = 1<<4,
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Rfc3984HasSPS = 1<<5,
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Rfc3984HasPPS = 1<<6,
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Rfc3984HasIDR = 1<<7,
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}Rfc3984Status;
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typedef struct Rfc3984Context{
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MSQueue q;
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mblk_t *m;
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int maxsz;
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unsigned int status; /*bitmask of Rfc3984Status values*/
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mblk_t *sps, *pps;
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mblk_t *last_sps, *last_pps;
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uint32_t last_ts;
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uint16_t ref_cseq;
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uint8_t mode;
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bool_t stap_a_allowed;
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bool_t initialized_ref_cseq;
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} Rfc3984Context;
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MS2_PUBLIC Rfc3984Context *rfc3984_new(void);
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MS2_PUBLIC void rfc3984_destroy(Rfc3984Context *ctx);
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void rfc3984_init(Rfc3984Context *ctx);
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MS2_PUBLIC void rfc3984_set_mode(Rfc3984Context *ctx, int mode);
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/* some stupid phones don't decode STAP-A packets ...*/
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MS2_PUBLIC void rfc3984_enable_stap_a(Rfc3984Context *ctx, bool_t yesno);
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/*process NALUs and pack them into rtp payloads */
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MS2_PUBLIC void rfc3984_pack(Rfc3984Context *ctx, MSQueue *naluq, MSQueue *rtpq, uint32_t ts);
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MS2_PUBLIC void rfc3984_unpack_out_of_band_sps_pps(Rfc3984Context *ctx, mblk_t *sps, mblk_t *pps);
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/**
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* Process incoming rtp data and output NALUs, whenever possible.
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* @return 0 if everything was ok, -1 on error (inconsistencies in sequence numbers for example).
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* @note the naluq output argument may be filled with incomplete data even if return value was -1.
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* @deprecated use rfc3984_unpack2
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**/
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MS2_DEPRECATED MS2_PUBLIC int rfc3984_unpack(Rfc3984Context *ctx, mblk_t *im, MSQueue *naluq);
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/**
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* Process incoming rtp data and output NALUs, whenever possible.
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* @param ctx the Rfc3984Context object
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* @param im a new H264 packet to process
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* @param naluq a MSQueue into which a frame ready to be decoded will be output, in the form of a sequence of NAL units.
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* @return a bitmask of Rfc3984Status values.
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* The return value is a bitmask of the #Rfc3984Status enum.
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**/
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MS2_PUBLIC unsigned int rfc3984_unpack2(Rfc3984Context *ctx, mblk_t *im, MSQueue *naluq);
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void rfc3984_uninit(Rfc3984Context *ctx);
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#ifdef __cplusplus
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}
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#endif
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#endif
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