FFmpeg
dnxhddata.h
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1 /*
2  * VC3/DNxHD decoder.
3  * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4  *
5  * This file is part of FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
22 #ifndef AVCODEC_DNXHDDATA_H
23 #define AVCODEC_DNXHDDATA_H
24 
25 #include <stdint.h>
26 #include "avcodec.h"
27 #include "libavutil/attributes.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/rational.h"
30 
31 /** Additional profile info flags */
32 #define DNXHD_INTERLACED (1<<0)
33 #define DNXHD_MBAFF (1<<1)
34 #define DNXHD_444 (1<<2)
35 
36 /** Frame headers, extra 0x00 added to end for parser */
37 #define DNXHD_HEADER_INITIAL 0x000002800100
38 #define DNXHD_HEADER_444 0x000002800200
39 
40 /** Indicate that a CIDEntry value must be read in the bitstream */
41 #define DNXHD_VARIABLE 0
42 
43 typedef struct CIDEntry {
44  int cid;
45  unsigned int width, height;
46  unsigned int frame_size;
47  unsigned int coding_unit_size;
48  uint16_t flags;
50  int bit_depth;
51  int eob_index;
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
60 } CIDEntry;
61 
64 void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel);
65 
66 static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
67 {
68  uint64_t data_offset = prefix >> 16;
69  if ((prefix & 0xFFFF0000FFFFLL) == 0x0300 &&
70  data_offset >= 0x0280 && data_offset <= 0x2170 &&
71  (data_offset & 3) == 0)
72  return prefix;
73  return 0;
74 }
75 
76 static av_always_inline uint64_t ff_dnxhd_check_header_prefix(uint64_t prefix)
77 {
78  if (prefix == DNXHD_HEADER_INITIAL ||
79  prefix == DNXHD_HEADER_444 ||
81  return prefix;
82  return 0;
83 }
84 
85 static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
86 {
87  uint64_t prefix = AV_RB32(buf);
88  prefix = (prefix << 16) | buf[4] << 8;
89  return ff_dnxhd_check_header_prefix(prefix);
90 }
91 
93 int ff_dnxhd_get_hr_frame_size(int cid, int w, int h);
94 
95 #endif /* AVCODEC_DNXHDDATA_H */
bit_depth
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:226
ff_dnxhd_check_header_prefix_hr
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
Definition: dnxhddata.h:66
ff_dnxhd_print_profiles
void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel)
Definition: dnxhddata.c:1157
ff_dnxhd_get_cid_table
const CIDEntry * ff_dnxhd_get_cid_table(int cid)
Definition: dnxhddata.c:1080
rational.h
w
uint8_t w
Definition: llviddspenc.c:38
DNXHD_HEADER_INITIAL
#define DNXHD_HEADER_INITIAL
Frame headers, extra 0x00 added to end for parser.
Definition: dnxhddata.h:37
CIDEntry::run_bits
const uint8_t * run_bits
Definition: dnxhddata.h:57
CIDEntry::coding_unit_size
unsigned int coding_unit_size
Definition: dnxhddata.h:47
CIDEntry::bit_rates
int bit_rates[5]
Helper to choose variants, rounded to nearest 5Mb/s.
Definition: dnxhddata.h:58
CIDEntry::ac_info
const uint8_t * ac_info
Definition: dnxhddata.h:55
CIDEntry::cid
int cid
Definition: dnxhddata.h:44
CIDEntry::packet_scale
AVRational packet_scale
Definition: dnxhddata.h:59
CIDEntry
Definition: dnxhddata.h:43
CIDEntry::flags
uint16_t flags
Definition: dnxhddata.h:48
CIDEntry::bit_depth
int bit_depth
Definition: dnxhddata.h:50
intreadwrite.h
CIDEntry::eob_index
int eob_index
Definition: dnxhddata.h:51
CIDEntry::luma_weight
const uint8_t * luma_weight
Definition: dnxhddata.h:52
CIDEntry::run_codes
const uint16_t * run_codes
Definition: dnxhddata.h:56
CIDEntry::height
unsigned int height
Definition: dnxhddata.h:45
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
CIDEntry::width
unsigned int width
Definition: dnxhddata.h:45
CIDEntry::index_bits
int index_bits
Definition: dnxhddata.h:49
cid
uint16_t cid
Definition: mxfenc.c:2042
DNXHD_HEADER_444
#define DNXHD_HEADER_444
Definition: dnxhddata.h:38
CIDEntry::dc_codes
const uint8_t * dc_codes
Definition: dnxhddata.h:53
CIDEntry::chroma_weight
const uint8_t * chroma_weight
Definition: dnxhddata.h:52
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
ff_dnxhd_get_frame_size
int ff_dnxhd_get_frame_size(int cid)
Definition: dnxhddata.c:1088
attributes.h
CIDEntry::run
const uint8_t * run
Definition: dnxhddata.h:57
CIDEntry::ac_bits
const uint8_t * ac_bits
Definition: dnxhddata.h:55
CIDEntry::ac_codes
const uint16_t * ac_codes
Definition: dnxhddata.h:54
ff_dnxhd_find_cid
int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth)
Definition: dnxhddata.c:1127
ff_dnxhd_check_header_prefix
static av_always_inline uint64_t ff_dnxhd_check_header_prefix(uint64_t prefix)
Definition: dnxhddata.h:76
av_always_inline
#define av_always_inline
Definition: attributes.h:49
CIDEntry::dc_bits
const uint8_t * dc_bits
Definition: dnxhddata.h:53
avcodec.h
ff_dnxhd_parse_header_prefix
static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
Definition: dnxhddata.h:85
AVCodecContext
main external API structure.
Definition: avcodec.h:398
CIDEntry::frame_size
unsigned int frame_size
Definition: dnxhddata.h:46
h
h
Definition: vp9dsp_template.c:2038
ff_dnxhd_get_hr_frame_size
int ff_dnxhd_get_hr_frame_size(int cid, int w, int h)
Definition: dnxhddata.c:1096