/*
  * Copyright (C) 2007 Marco Gerards <marco@gnu.org>
  * Copyright (C) 2009 David Conrad

  * Copyright (C) 2011 Jordi Ortiz

  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVCODEC_DIRAC_H
 #define AVCODEC_DIRAC_H
 
 /**

  * @file

  * Interface to Dirac Decoder/Encoder

  * @author Marco Gerards <marco@gnu.org>

  * @author David Conrad
  * @author Jordi Ortiz

  */
 
 #include "avcodec.h"
 

 /**

  * The spec limits the number of wavelet decompositions to 4 for both
  * level 1 (VC-2) and 128 (long-gop default).
  * 5 decompositions is the maximum before >16-bit buffers are needed.
  * Schroedinger allows this for DD 9,7 and 13,7 wavelets only, limiting
  * the others to 4 decompositions (or 3 for the fidelity filter).
  *
  * We use this instead of MAX_DECOMPOSITIONS to save some memory.
  */
 #define MAX_DWT_LEVELS 5
 
 /**

  * Parse code values:
  *
  * Dirac Specification ->
  * 9.6.1  Table 9.1
  *
  * VC-2 Specification  ->
  * 10.4.1 Table 10.1
  */
 
 enum DiracParseCodes {
     DIRAC_PCODE_SEQ_HEADER      = 0x00,
     DIRAC_PCODE_END_SEQ         = 0x10,
     DIRAC_PCODE_AUX             = 0x20,
     DIRAC_PCODE_PAD             = 0x30,
     DIRAC_PCODE_PICTURE_CODED   = 0x08,
     DIRAC_PCODE_PICTURE_RAW     = 0x48,
     DIRAC_PCODE_PICTURE_LOW_DEL = 0xC8,
     DIRAC_PCODE_PICTURE_HQ      = 0xE8,

     DIRAC_PCODE_INTER_NOREF_CO1 = 0x0A,
     DIRAC_PCODE_INTER_NOREF_CO2 = 0x09,
     DIRAC_PCODE_INTER_REF_CO1   = 0x0D,
     DIRAC_PCODE_INTER_REF_CO2   = 0x0E,
     DIRAC_PCODE_INTRA_REF_CO    = 0x0C,
     DIRAC_PCODE_INTRA_REF_RAW   = 0x4C,
     DIRAC_PCODE_INTRA_REF_PICT  = 0xCC,

     DIRAC_PCODE_MAGIC           = 0x42424344,
 };
 

 typedef struct DiracVersionInfo {
     int major;
     int minor;
 } DiracVersionInfo;
 

 typedef struct AVDiracSeqHeader {

     unsigned width;
     unsigned height;
     uint8_t chroma_format;          ///< 0: 444  1: 422  2: 420
 
     uint8_t interlaced;
     uint8_t top_field_first;
 
     uint8_t frame_rate_index;       ///< index into dirac_frame_rate[]
     uint8_t aspect_ratio_index;     ///< index into dirac_aspect_ratio[]
 
     uint16_t clean_width;
     uint16_t clean_height;
     uint16_t clean_left_offset;
     uint16_t clean_right_offset;
 
     uint8_t pixel_range_index;      ///< index into dirac_pixel_range_presets[]
     uint8_t color_spec_index;       ///< index into dirac_color_spec_presets[]
 

     int profile;
     int level;
 
     AVRational framerate;
     AVRational sample_aspect_ratio;
 
     enum AVPixelFormat pix_fmt;
     enum AVColorRange color_range;
     enum AVColorPrimaries color_primaries;
     enum AVColorTransferCharacteristic color_trc;
     enum AVColorSpace colorspace;

 
     DiracVersionInfo version;
     int bit_depth;

 } AVDiracSeqHeader;
 
 /**
  * Parse a Dirac sequence header.
  *
  * @param dsh this function will allocate and fill an AVDiracSeqHeader struct
  *            and write it into this pointer. The caller must free it with
  *            av_free().
  * @param buf the data buffer
  * @param buf_size the size of the data buffer in bytes
  * @param log_ctx if non-NULL, this function will log errors here
  * @return 0 on success, a negative AVERROR code on failure
  */
 int av_dirac_parse_sequence_header(AVDiracSeqHeader **dsh,
                                    const uint8_t *buf, size_t buf_size,
                                    void *log_ctx);

 
 #endif /* AVCODEC_DIRAC_H */