FFmpeg
libavcodec
dnxhddata.h
Go to the documentation of this file.
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/*
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* VC3/DNxHD decoder.
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* Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
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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_DNXHDDATA_H
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#define AVCODEC_DNXHDDATA_H
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#include <stdint.h>
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#include "
avcodec.h
"
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#include "
libavutil/attributes.h
"
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#include "
libavutil/intreadwrite.h
"
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#include "
libavutil/rational.h
"
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/** Additional profile info flags */
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#define DNXHD_INTERLACED (1<<0)
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#define DNXHD_MBAFF (1<<1)
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#define DNXHD_444 (1<<2)
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/** Frame headers, extra 0x00 added to end for parser */
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#define DNXHD_HEADER_INITIAL 0x000002800100
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#define DNXHD_HEADER_444 0x000002800200
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/** Indicate that a CIDEntry value must be read in the bitstream */
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#define DNXHD_VARIABLE 0
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typedef
struct
CIDEntry
{
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int
cid
;
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unsigned
int
width
,
height
;
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unsigned
int
frame_size
;
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unsigned
int
coding_unit_size
;
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uint16_t
flags
;
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int
index_bits
;
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int
bit_depth
;
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int
eob_index
;
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const
uint8_t *
luma_weight
, *
chroma_weight
;
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const
uint8_t *
dc_codes
, *
dc_bits
;
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const
uint16_t *
ac_codes
;
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const
uint8_t *
ac_bits
, *
ac_info
;
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const
uint16_t *
run_codes
;
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const
uint8_t *
run_bits
, *
run
;
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int
bit_rates
[5];
///< Helper to choose variants, rounded to nearest 5Mb/s
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AVRational
packet_scale
;
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}
CIDEntry
;
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const
CIDEntry
*
ff_dnxhd_get_cid_table
(
int
cid
);
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int
ff_dnxhd_find_cid
(
AVCodecContext
*avctx,
int
bit_depth
);
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void
ff_dnxhd_print_profiles
(
AVCodecContext
*avctx,
int
loglevel);
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static
av_always_inline
uint64_t
ff_dnxhd_check_header_prefix_hr
(uint64_t prefix)
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{
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uint64_t data_offset = prefix >> 16;
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if
((prefix & 0xFFFF0000FFFFLL) == 0x0300 &&
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data_offset >= 0x0280 && data_offset <= 0x2170 &&
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(data_offset & 3) == 0)
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return
prefix;
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return
0;
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}
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static
av_always_inline
uint64_t
ff_dnxhd_check_header_prefix
(uint64_t prefix)
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{
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if
(prefix ==
DNXHD_HEADER_INITIAL
||
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prefix ==
DNXHD_HEADER_444
||
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ff_dnxhd_check_header_prefix_hr
(prefix))
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return
prefix;
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return
0;
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}
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static
av_always_inline
uint64_t
ff_dnxhd_parse_header_prefix
(
const
uint8_t *buf)
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{
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uint64_t prefix =
AV_RB32
(buf);
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prefix = (prefix << 16) | buf[4] << 8;
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return
ff_dnxhd_check_header_prefix
(prefix);
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}
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int
ff_dnxhd_get_frame_size
(
int
cid
);
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int
ff_dnxhd_get_hr_frame_size
(
int
cid
,
int
w
,
int
h
);
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#endif
/* AVCODEC_DNXHDDATA_H */
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
bit_depth
static void bit_depth(AudioStatsContext *s, const uint64_t *const mask, uint8_t *depth)
Definition:
af_astats.c:246
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:2264
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:451
CIDEntry::frame_size
unsigned int frame_size
Definition:
dnxhddata.h:46
h
h
Definition:
vp9dsp_template.c:2070
ff_dnxhd_get_hr_frame_size
int ff_dnxhd_get_hr_frame_size(int cid, int w, int h)
Definition:
dnxhddata.c:1096
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