198 lines
7.2 KiB
C
198 lines
7.2 KiB
C
/**********************************************************************************************/
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/* The MIT License */
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/* */
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/* Copyright 2016-2016 Twitch Interactive, Inc. or its affiliates. All Rights Reserved. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining a copy */
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/* of this software and associated documentation files (the "Software"), to deal */
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/* in the Software without restriction, including without limitation the rights */
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/* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell */
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/* copies of the Software, and to permit persons to whom the Software is */
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/* furnished to do so, subject to the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be included in */
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/* all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
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/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
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/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
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/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
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/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
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/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN */
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/* THE SOFTWARE. */
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/**********************************************************************************************/
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#ifndef LIBCAPTION_AVC_H
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#define LIBCAPTION_AVC_H
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#include "cea708.h"
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#include "caption.h"
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#include <float.h>
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////////////////////////////////////////////////////////////////////////////////
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#define MAX_NALU_SIZE (4*1024*1024)
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typedef struct {
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size_t size;
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uint8_t data[MAX_NALU_SIZE];
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} avcnalu_t;
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void avcnalu_init (avcnalu_t* nalu);
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int avcnalu_parse_annexb (avcnalu_t* nalu, const uint8_t** data, size_t* size);
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static inline uint8_t avcnalu_type (avcnalu_t* nalu) { return nalu->data[0] & 0x1F; }
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static inline uint8_t* avcnalu_data (avcnalu_t* nalu) { return &nalu->data[0]; }
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static inline size_t avcnalu_size (avcnalu_t* nalu) { return nalu->size; }
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////////////////////////////////////////////////////////////////////////////////
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typedef struct _sei_message_t sei_message_t;
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typedef enum {
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sei_type_buffering_period = 0,
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sei_type_pic_timing = 1,
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sei_type_pan_scan_rect = 2,
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sei_type_filler_payload = 3,
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sei_type_user_data_registered_itu_t_t35 = 4,
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sei_type_user_data_unregistered = 5,
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sei_type_recovery_point = 6,
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sei_type_dec_ref_pic_marking_repetition = 7,
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sei_type_spare_pic = 8,
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sei_type_scene_info = 9,
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sei_type_sub_seq_info = 10,
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sei_type_sub_seq_layer_characteristics = 11,
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sei_type_sub_seq_characteristics = 12,
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sei_type_full_frame_freeze = 13,
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sei_type_full_frame_freeze_release = 14,
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sei_type_full_frame_snapshot = 15,
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sei_type_progressive_refinement_segment_start = 16,
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sei_type_progressive_refinement_segment_end = 17,
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sei_type_motion_constrained_slice_group_set = 18,
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sei_type_film_grain_characteristics = 19,
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sei_type_deblocking_filter_display_preference = 20,
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sei_type_stereo_video_info = 21,
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} sei_msgtype_t;
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////////////////////////////////////////////////////////////////////////////////
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// time in seconds
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typedef struct {
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double dts;
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double cts;
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sei_message_t* head;
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sei_message_t* tail;
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} sei_t;
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/*! \brief
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\param
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*/
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void sei_init (sei_t* sei);
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/*! \brief
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\param
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*/
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void sei_free (sei_t* sei);
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/*! \brief
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\param
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*/
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static inline double sei_dts (sei_t* sei) { return sei->dts; }
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static inline double sei_cts (sei_t* sei) { return sei->cts; }
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static inline double sei_pts (sei_t* sei) { return sei->dts + sei->cts; }
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/*! \brief
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\param
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*/
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int sei_parse_nalu (sei_t* sei, const uint8_t* data, size_t size, double dts, double cts);
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/*! \brief
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\param
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*/
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// TODO add dts,cts to nalu
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static inline int sei_parse_avcnalu (sei_t* sei, avcnalu_t* nalu, double dts, double cts) { return sei_parse_nalu (sei,avcnalu_data (nalu),avcnalu_size (nalu),dts,cts); }
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/*! \brief
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\param
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*/
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static inline int sei_finish (sei_t* sei) { return sei_parse_nalu (sei,0,0,0.0,DBL_MAX); }
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/*! \brief
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\param
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*/
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static inline sei_message_t* sei_message_head (sei_t* sei) { return sei->head; }
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/*! \brief
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\param
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*/
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static inline sei_message_t* sei_message_tail (sei_t* sei) { return sei->tail; }
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/*! \brief
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\param
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*/
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sei_message_t* sei_message_next (sei_message_t* msg);
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/*! \brief
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\param
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*/
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sei_msgtype_t sei_message_type (sei_message_t* msg);
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/*! \brief
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\param
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*/
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size_t sei_message_size (sei_message_t* msg);
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/*! \brief
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\param
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*/
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uint8_t* sei_message_data (sei_message_t* msg);
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/*! \brief
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\param
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*/
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sei_message_t* sei_message_new (sei_msgtype_t type, uint8_t* data, size_t size);
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/*! \brief
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\param
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*/
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static inline sei_message_t* sei_message_copy (sei_message_t* msg)
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{
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return sei_message_new (sei_message_type (msg), sei_message_data (msg), sei_message_size (msg));
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}
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/**
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Free message and all accoiated data. Messaged added to sei_t by using sei_append_message MUST NOT be freed
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These messages will be freed by calling sei_free()
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*/
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/*! \brief
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\param
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*/
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void sei_message_free (sei_message_t* msg);
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////////////////////////////////////////////////////////////////////////////////
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/*! \brief
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\param
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*/
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static inline int sei_decode_cea708 (sei_message_t* msg, cea708_t* cea708)
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{
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if (sei_type_user_data_registered_itu_t_t35 == sei_message_type (msg)) {
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return cea708_parse (sei_message_data (msg), sei_message_size (msg), cea708);
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} else {
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return 0;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/*! \brief
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\param
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*/
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size_t sei_render_size (sei_t* sei);
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/*! \brief
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\param
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*/
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size_t sei_render (sei_t* sei, uint8_t* data);
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/*! \brief
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\param
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*/
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void sei_dump (sei_t* sei);
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/*! \brief
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\param
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*/
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void sei_dump_messages (sei_message_t* head);
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////////////////////////////////////////////////////////////////////////////////
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/*! \brief
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\param
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*/
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int sei_from_caption_frame (sei_t* sei, caption_frame_t* frame);
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/*! \brief
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\param
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*/
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libcaption_stauts_t sei_to_caption_frame (sei_t* sei, caption_frame_t* frame);
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/*! \brief
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\param
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*/
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static inline int nalu_to_caption_frame (caption_frame_t* frame, const uint8_t* data, size_t size, double pts, double dts)
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{
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sei_t sei;
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sei_init (&sei);
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sei_parse_nalu (&sei, data, size, pts, dts);
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sei_to_caption_frame (&sei,frame);
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sei_free (&sei);
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return 1;
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}
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////////////////////////////////////////////////////////////////////////////////
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#endif
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