codecs/vc1.h

   1 /*****************************************************************************
   2  * vc1.h:
   3  *****************************************************************************
   4  * Copyright (C) 2012-2014 L-SMASH project
   5  *
   6  * Authors: Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
   7  *
   8  * Permission to use, copy, modify, and/or distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  *****************************************************************************/
  20
  21 /* This file is available under an ISC license. */
  22
  23 #define VC1_DEFAULT_BUFFER_SIZE      (1<<16)
  24 #define VC1_START_CODE_PREFIX_LENGTH 3      /* 0x000001 */
  25 #define VC1_START_CODE_SUFFIX_LENGTH 1      /* BDU type */
  26 #define VC1_START_CODE_LENGTH (VC1_START_CODE_PREFIX_LENGTH + VC1_START_CODE_SUFFIX_LENGTH)     /* = 4 */
  27
  28 typedef struct
  29 {
  30     uint8_t hrd_num_leaky_buckets;
  31 } vc1_hrd_param_t;
  32
  33 typedef struct
  34 {
  35     uint8_t  present;
  36     uint8_t  profile;
  37     uint8_t  level;
  38     uint8_t  colordiff_format;      /* currently 4:2:0 only */
  39     uint8_t  interlace;
  40     uint8_t  color_prim;
  41     uint8_t  transfer_char;
  42     uint8_t  matrix_coef;
  43     uint8_t  hrd_param_flag;
  44     uint8_t  aspect_width;
  45     uint8_t  aspect_height;
  46     uint8_t  framerate_flag;
  47     uint32_t framerate_numerator;
  48     uint32_t framerate_denominator;
  49     uint16_t max_coded_width;
  50     uint16_t max_coded_height;
  51     uint16_t disp_horiz_size;
  52     uint16_t disp_vert_size;
  53     vc1_hrd_param_t hrd_param;
  54 } vc1_sequence_header_t;
  55
  56 typedef struct
  57 {
  58     uint8_t present;
  59     uint8_t closed_entry_point;
  60 } vc1_entry_point_t;
  61
  62 typedef struct
  63 {
  64     uint8_t present;
  65     uint8_t frame_coding_mode;
  66     uint8_t type;
  67     uint8_t closed_gop;
  68     uint8_t start_of_sequence;
  69     uint8_t random_accessible;
  70 } vc1_picture_info_t;
  71
  72 typedef struct
  73 {
  74     uint8_t  random_accessible;
  75     uint8_t  closed_gop;
  76     uint8_t  independent;
  77     uint8_t  non_bipredictive;
  78     uint8_t  disposable;
  79     uint8_t *data;
  80     uint32_t data_length;
  81     uint8_t *incomplete_data;
  82     uint32_t incomplete_data_length;
  83     uint32_t number;
  84 } vc1_access_unit_t;
  85
  86 typedef struct vc1_info_tag vc1_info_t;
  87
  88 typedef struct
  89 {
  90     lsmash_multiple_buffers_t *bank;
  91     uint8_t                   *rbdu;
  92 } vc1_stream_buffer_t;
  93
  94 struct vc1_info_tag
  95 {
  96     lsmash_vc1_specific_parameters_t dvc1_param;
  97     vc1_sequence_header_t sequence;
  98     vc1_entry_point_t     entry_point;
  99     vc1_picture_info_t    picture;
 100     vc1_access_unit_t     access_unit;
 101     uint8_t               prev_bdu_type;
 102     uint64_t              ebdu_head_pos;
 103     lsmash_bits_t        *bits;
 104     vc1_stream_buffer_t   buffer;
 105 };
 106
 107 int vc1_setup_parser
 108 (
 109     vc1_info_t *info,
 110     int         parse_only
 111 );
 112
 113 uint64_t vc1_find_next_start_code_prefix
 114 (
 115     lsmash_bs_t *bs,
 116     uint8_t     *bdu_type,
 117     uint64_t    *trailing_zero_bytes
 118 );
 119
 120 int vc1_check_next_start_code_suffix
 121 (
 122     lsmash_bs_t *bs,
 123     uint8_t     *p_bdu_type
 124 );
 125
 126 void vc1_cleanup_parser( vc1_info_t *info );
 127 int vc1_parse_sequence_header( vc1_info_t *info, uint8_t *ebdu, uint64_t ebdu_size, int probe );
 128 int vc1_parse_entry_point_header( vc1_info_t *info, uint8_t *ebdu, uint64_t ebdu_size, int probe );
 129 int vc1_parse_advanced_picture( lsmash_bits_t *bits,
 130                                 vc1_sequence_header_t *sequence, vc1_picture_info_t *picture,
 131                                 uint8_t *rbdu_buffer, uint8_t *ebdu, uint64_t ebdu_size );
 132 void vc1_update_au_property( vc1_access_unit_t *access_unit, vc1_picture_info_t *picture );
 133 int vc1_find_au_delimit_by_bdu_type( uint8_t bdu_type, uint8_t prev_bdu_type );
 134 int vc1_supplement_buffer( vc1_stream_buffer_t *buffer, vc1_access_unit_t *access_unit, uint32_t size );