duckstation

duckstation, but archived from the revision just before upstream changed it to a proprietary software project, this version is the libre one
git clone https://git.neptards.moe/u3shit/duckstation.git
Log | Files | Refs | README | LICENSE

dirac.h (4126B)

      1 /*
      2  * Copyright (C) 2007 Marco Gerards <marco@gnu.org>
      3  * Copyright (C) 2009 David Conrad
      4  * Copyright (C) 2011 Jordi Ortiz
      5  *
      6  * This file is part of FFmpeg.
      7  *
      8  * FFmpeg is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Lesser General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2.1 of the License, or (at your option) any later version.
     12  *
     13  * FFmpeg is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Lesser General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Lesser General Public
     19  * License along with FFmpeg; if not, write to the Free Software
     20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     21  */
     22 
     23 #ifndef AVCODEC_DIRAC_H
     24 #define AVCODEC_DIRAC_H
     25 
     26 /**
     27  * @file
     28  * Interface to Dirac Decoder/Encoder
     29  * @author Marco Gerards <marco@gnu.org>
     30  * @author David Conrad
     31  * @author Jordi Ortiz
     32  */
     33 
     34 #include <stddef.h>
     35 #include <stdint.h>
     36 
     37 #include "libavutil/pixfmt.h"
     38 #include "libavutil/rational.h"
     39 
     40 /**
     41  * The spec limits the number of wavelet decompositions to 4 for both
     42  * level 1 (VC-2) and 128 (long-gop default).
     43  * 5 decompositions is the maximum before >16-bit buffers are needed.
     44  * Schroedinger allows this for DD 9,7 and 13,7 wavelets only, limiting
     45  * the others to 4 decompositions (or 3 for the fidelity filter).
     46  *
     47  * We use this instead of MAX_DECOMPOSITIONS to save some memory.
     48  */
     49 #define MAX_DWT_LEVELS 5
     50 
     51 /**
     52  * Parse code values:
     53  *
     54  * Dirac Specification ->
     55  * 9.6.1  Table 9.1
     56  *
     57  * VC-2 Specification  ->
     58  * 10.4.1 Table 10.1
     59  */
     60 
     61 enum DiracParseCodes {
     62     DIRAC_PCODE_SEQ_HEADER      = 0x00,
     63     DIRAC_PCODE_END_SEQ         = 0x10,
     64     DIRAC_PCODE_AUX             = 0x20,
     65     DIRAC_PCODE_PAD             = 0x30,
     66     DIRAC_PCODE_PICTURE_CODED   = 0x08,
     67     DIRAC_PCODE_PICTURE_RAW     = 0x48,
     68     DIRAC_PCODE_PICTURE_LOW_DEL = 0xC8,
     69     DIRAC_PCODE_PICTURE_HQ      = 0xE8,
     70     DIRAC_PCODE_INTER_NOREF_CO1 = 0x0A,
     71     DIRAC_PCODE_INTER_NOREF_CO2 = 0x09,
     72     DIRAC_PCODE_INTER_REF_CO1   = 0x0D,
     73     DIRAC_PCODE_INTER_REF_CO2   = 0x0E,
     74     DIRAC_PCODE_INTRA_REF_CO    = 0x0C,
     75     DIRAC_PCODE_INTRA_REF_RAW   = 0x4C,
     76     DIRAC_PCODE_INTRA_REF_PICT  = 0xCC,
     77     DIRAC_PCODE_MAGIC           = 0x42424344,
     78 };
     79 
     80 typedef struct DiracVersionInfo {
     81     int major;
     82     int minor;
     83 } DiracVersionInfo;
     84 
     85 typedef struct AVDiracSeqHeader {
     86     unsigned width;
     87     unsigned height;
     88     uint8_t chroma_format;          ///< 0: 444  1: 422  2: 420
     89 
     90     uint8_t interlaced;
     91     uint8_t top_field_first;
     92 
     93     uint8_t frame_rate_index;       ///< index into dirac_frame_rate[]
     94     uint8_t aspect_ratio_index;     ///< index into dirac_aspect_ratio[]
     95 
     96     uint16_t clean_width;
     97     uint16_t clean_height;
     98     uint16_t clean_left_offset;
     99     uint16_t clean_right_offset;
    100 
    101     uint8_t pixel_range_index;      ///< index into dirac_pixel_range_presets[]
    102     uint8_t color_spec_index;       ///< index into dirac_color_spec_presets[]
    103 
    104     int profile;
    105     int level;
    106 
    107     AVRational framerate;
    108     AVRational sample_aspect_ratio;
    109 
    110     enum AVPixelFormat pix_fmt;
    111     enum AVColorRange color_range;
    112     enum AVColorPrimaries color_primaries;
    113     enum AVColorTransferCharacteristic color_trc;
    114     enum AVColorSpace colorspace;
    115 
    116     DiracVersionInfo version;
    117     int bit_depth;
    118 } AVDiracSeqHeader;
    119 
    120 /**
    121  * Parse a Dirac sequence header.
    122  *
    123  * @param dsh this function will allocate and fill an AVDiracSeqHeader struct
    124  *            and write it into this pointer. The caller must free it with
    125  *            av_free().
    126  * @param buf the data buffer
    127  * @param buf_size the size of the data buffer in bytes
    128  * @param log_ctx if non-NULL, this function will log errors here
    129  * @return 0 on success, a negative AVERROR code on failure
    130  */
    131 int av_dirac_parse_sequence_header(AVDiracSeqHeader **dsh,
    132                                    const uint8_t *buf, size_t buf_size,
    133                                    void *log_ctx);
    134 
    135 #endif /* AVCODEC_DIRAC_H */