| /* | |
| * 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 | |
| */ | |
| /** | |
| * @file | |
| * Interface to Dirac Decoder/Encoder | |
| * @author Marco Gerards <marco@gnu.org> | |
| * @author David Conrad | |
| * @author Jordi Ortiz | |
| */ | |
| /** | |
| * 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. | |
| */ | |
| /** | |
| * 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); | |