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131 lines
3.9 KiB
131 lines
3.9 KiB
/* |
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* Copyright (C) 2007 Marco Gerards <marco@gnu.org> |
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* Copyright (C) 2009 David Conrad |
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* Copyright (C) 2011 Jordi Ortiz |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_DIRAC_H |
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#define AVCODEC_DIRAC_H |
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/** |
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* @file |
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* Interface to Dirac Decoder/Encoder |
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* @author Marco Gerards <marco@gnu.org> |
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* @author David Conrad |
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* @author Jordi Ortiz |
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*/ |
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#include "avcodec.h" |
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/** |
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* The spec limits the number of wavelet decompositions to 4 for both |
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* level 1 (VC-2) and 128 (long-gop default). |
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* 5 decompositions is the maximum before >16-bit buffers are needed. |
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* Schroedinger allows this for DD 9,7 and 13,7 wavelets only, limiting |
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* the others to 4 decompositions (or 3 for the fidelity filter). |
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* |
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* We use this instead of MAX_DECOMPOSITIONS to save some memory. |
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*/ |
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#define MAX_DWT_LEVELS 5 |
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/** |
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* Parse code values: |
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* |
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* Dirac Specification -> |
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* 9.6.1 Table 9.1 |
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* |
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* VC-2 Specification -> |
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* 10.4.1 Table 10.1 |
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*/ |
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enum DiracParseCodes { |
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DIRAC_PCODE_SEQ_HEADER = 0x00, |
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DIRAC_PCODE_END_SEQ = 0x10, |
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DIRAC_PCODE_AUX = 0x20, |
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DIRAC_PCODE_PAD = 0x30, |
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DIRAC_PCODE_PICTURE_CODED = 0x08, |
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DIRAC_PCODE_PICTURE_RAW = 0x48, |
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DIRAC_PCODE_PICTURE_LOW_DEL = 0xC8, |
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DIRAC_PCODE_PICTURE_HQ = 0xE8, |
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DIRAC_PCODE_INTER_NOREF_CO1 = 0x0A, |
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DIRAC_PCODE_INTER_NOREF_CO2 = 0x09, |
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DIRAC_PCODE_INTER_REF_CO1 = 0x0D, |
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DIRAC_PCODE_INTER_REF_CO2 = 0x0E, |
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DIRAC_PCODE_INTRA_REF_CO = 0x0C, |
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DIRAC_PCODE_INTRA_REF_RAW = 0x4C, |
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DIRAC_PCODE_INTRA_REF_PICT = 0xCC, |
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DIRAC_PCODE_MAGIC = 0x42424344, |
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}; |
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typedef struct DiracVersionInfo { |
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int major; |
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int minor; |
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} DiracVersionInfo; |
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typedef struct AVDiracSeqHeader { |
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unsigned width; |
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unsigned height; |
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uint8_t chroma_format; ///< 0: 444 1: 422 2: 420 |
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uint8_t interlaced; |
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uint8_t top_field_first; |
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uint8_t frame_rate_index; ///< index into dirac_frame_rate[] |
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uint8_t aspect_ratio_index; ///< index into dirac_aspect_ratio[] |
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uint16_t clean_width; |
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uint16_t clean_height; |
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uint16_t clean_left_offset; |
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uint16_t clean_right_offset; |
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uint8_t pixel_range_index; ///< index into dirac_pixel_range_presets[] |
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uint8_t color_spec_index; ///< index into dirac_color_spec_presets[] |
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int profile; |
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int level; |
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AVRational framerate; |
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AVRational sample_aspect_ratio; |
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enum AVPixelFormat pix_fmt; |
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enum AVColorRange color_range; |
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enum AVColorPrimaries color_primaries; |
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enum AVColorTransferCharacteristic color_trc; |
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enum AVColorSpace colorspace; |
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DiracVersionInfo version; |
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int bit_depth; |
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} AVDiracSeqHeader; |
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/** |
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* Parse a Dirac sequence header. |
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* |
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* @param dsh this function will allocate and fill an AVDiracSeqHeader struct |
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* and write it into this pointer. The caller must free it with |
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* av_free(). |
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* @param buf the data buffer |
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* @param buf_size the size of the data buffer in bytes |
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* @param log_ctx if non-NULL, this function will log errors here |
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* @return 0 on success, a negative AVERROR code on failure |
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*/ |
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int av_dirac_parse_sequence_header(AVDiracSeqHeader **dsh, |
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const uint8_t *buf, size_t buf_size, |
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void *log_ctx); |
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#endif /* AVCODEC_DIRAC_H */
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