/* * 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 <stddef.h> #include <stdint.h> #include "libavutil/pixfmt.h" #include "libavutil/rational.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 */