| /* |
| * VC3/DNxHD decoder. |
| * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> |
| * |
| * 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_DNXHDDATA_H |
| #define AVCODEC_DNXHDDATA_H |
| |
| #include <stdint.h> |
| #include "avcodec.h" |
| #include "libavutil/internal.h" |
| |
| /** Additional profile info flags */ |
| #define DNXHD_INTERLACED (1<<0) |
| #define DNXHD_MBAFF (1<<1) |
| #define DNXHD_444 (1<<2) |
| |
| /** Frame headers, extra 0x00 added to end for parser */ |
| #define DNXHD_HEADER_INITIAL 0x000002800100 |
| #define DNXHD_HEADER_444 0x000002800200 |
| #define DNXHD_HEADER_HR1 0x000002800300 |
| #define DNXHD_HEADER_HR2 0x0000038C0300 |
| |
| /** Indicate that a CIDEntry value must be read in the bitstream */ |
| #define DNXHD_VARIABLE 0 |
| |
| typedef struct CIDEntry { |
| int cid; |
| unsigned int width, height; |
| unsigned int frame_size; |
| unsigned int coding_unit_size; |
| uint16_t flags; |
| int index_bits; |
| int bit_depth; |
| int eob_index; |
| const uint8_t *luma_weight, *chroma_weight; |
| const uint8_t *dc_codes, *dc_bits; |
| const uint16_t *ac_codes; |
| const uint8_t *ac_bits, *ac_info; |
| const uint16_t *run_codes; |
| const uint8_t *run_bits, *run; |
| int bit_rates[5]; ///< Helper to choose variants, rounded to nearest 5Mb/s |
| AVRational frame_rates[5]; |
| } CIDEntry; |
| |
| extern const CIDEntry ff_dnxhd_cid_table[]; |
| |
| int ff_dnxhd_get_cid_table(int cid); |
| int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth); |
| void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel); |
| |
| static av_always_inline uint64_t ff_dnxhd_check_header_prefix(uint64_t prefix) |
| { |
| if (prefix == DNXHD_HEADER_INITIAL || |
| prefix == DNXHD_HEADER_444 || |
| prefix == DNXHD_HEADER_HR1 || |
| prefix == DNXHD_HEADER_HR2) |
| return prefix; |
| return 0; |
| } |
| |
| int avpriv_dnxhd_get_frame_size(int cid); |
| int avpriv_dnxhd_get_interlaced(int cid); |
| uint64_t avpriv_dnxhd_parse_header_prefix(const uint8_t *buf); |
| #endif /* AVCODEC_DNXHDDATA_H */ |