3 * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVCODEC_DNXHDDATA_H
23 #define AVCODEC_DNXHDDATA_H
27 #include "libavutil/internal.h"
29 /** Additional profile info flags */
30 #define DNXHD_INTERLACED (1<<0)
31 #define DNXHD_MBAFF (1<<1)
32 #define DNXHD_444 (1<<2)
34 /** Frame headers, extra 0x00 added to end for parser */
35 #define DNXHD_HEADER_INITIAL 0x000002800100
36 #define DNXHD_HEADER_444 0x000002800200
37 #define DNXHD_HEADER_HR1 0x000002800300
38 #define DNXHD_HEADER_HR2 0x0000038C0300
40 /** Indicate that a CIDEntry value must be read in the bitstream */
41 #define DNXHD_VARIABLE 0
43 typedef struct CIDEntry {
45 unsigned int width, height;
46 unsigned int frame_size;
47 unsigned int coding_unit_size;
52 const uint8_t *luma_weight, *chroma_weight;
53 const uint8_t *dc_codes, *dc_bits;
54 const uint16_t *ac_codes;
55 const uint8_t *ac_bits, *ac_info;
56 const uint16_t *run_codes;
57 const uint8_t *run_bits, *run;
58 int bit_rates[5]; ///< Helper to choose variants, rounded to nearest 5Mb/s
59 AVRational frame_rates[5];
62 extern const CIDEntry ff_dnxhd_cid_table[];
64 int ff_dnxhd_get_cid_table(int cid);
65 int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth);
66 void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel);
68 static av_always_inline uint64_t ff_dnxhd_check_header_prefix(uint64_t prefix)
70 if (prefix == DNXHD_HEADER_INITIAL ||
71 prefix == DNXHD_HEADER_444 ||
72 prefix == DNXHD_HEADER_HR1 ||
73 prefix == DNXHD_HEADER_HR2)
78 int avpriv_dnxhd_get_frame_size(int cid);
79 int avpriv_dnxhd_get_interlaced(int cid);
80 uint64_t avpriv_dnxhd_parse_header_prefix(const uint8_t *buf);
81 #endif /* AVCODEC_DNXHDDATA_H */