/*****************************************************************************
* jpeg2000.h J2K definitions
*****************************************************************************
* Copyright (C) 2017 VideoLAN Authors
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_JPEG2000_H
#define VLC_JPEG2000_H
#define J2K_BOX_JP2C VLC_FOURCC(
'j',
'p',
'2',
'c')
enum j2k_profiles_e
{
J2K_PROFILE_SD =
0,
J2K_PROFILE_HD,
J2K_PROFILE_3G,
J2K_PROFILE_S3D_HD,
J2K_PROFILE_S3D_3G,
};
static inline bool j2k_is_valid_framerate(
unsigned num,
unsigned den )
{
const struct
{
const unsigned num;
const unsigned den;
} numdens[] = {
/* table 2-99 */
{
24000,
1001 },
{
24,
1 },
{
25,
1 },
{
30000,
1001 },
{
30,
1 },
{
50,
1 },
{
60000,
1001 },
{
60,
1 },
};
for( size_t i=
0; i<ARRAY_SIZE(numdens); i++ )
if( numdens[i].den == den && numdens[i].num == num )
return true;
return false;
}
static inline enum j2k_profiles_e j2k_get_profile(
unsigned w,
unsigned h,
unsigned num,
unsigned den,
bool p )
{
const uint64_t s = w *(uint64_t)h;
const uint64_t f = num / den;
if( s <=
720*
576 && f <
50 )
return J2K_PROFILE_SD;
/* VSF_TR-01_2013-04-15 */
else if( s <=
1280*
720 && f <
60 && p )
return J2K_PROFILE_HD;
else if( s <=
1920*
1080 && f <
60 && !p )
return J2K_PROFILE_HD;
else
return J2K_PROFILE_3G;
}
static const struct
{
const uint16_t min;
const uint16_t max;
} j2k_profiles_rates[] = {
[J2K_PROFILE_SD] = {
25,
200 },
[J2K_PROFILE_HD] = {
75,
200 },
[J2K_PROFILE_3G] = {
100,
400 },
[J2K_PROFILE_S3D_HD] = {
150,
200 },
[J2K_PROFILE_S3D_3G] = {
200,
400 },
};
enum j2k_color_specs_e
{
J2K_COLOR_SPEC_UNKNOWN =
0,
J2K_COLOR_SPEC_SRGB,
J2K_COLOR_SPEC_REC_601,
J2K_COLOR_SPEC_REC_709,
J2K_COLOR_SPEC_CIE_LUV,
J2K_COLOR_SPEC_CIE_XYZ,
J2K_COLOR_SPEC_REC_2020,
J2K_COLOR_SPEC_SMPTE_2084,
};
static const struct
{
video_color_primaries_t primaries;
video_transfer_func_t transfer;
video_color_space_t space;
} j2k_color_specifications[] = {
[J2K_COLOR_SPEC_UNKNOWN] = { COLOR_PRIMARIES_UNDEF,
TRANSFER_FUNC_UNDEF,
COLOR_SPACE_UNDEF },
[J2K_COLOR_SPEC_SRGB] = { COLOR_PRIMARIES_SRGB,
TRANSFER_FUNC_SRGB,
COLOR_SPACE_SRGB },
[J2K_COLOR_SPEC_REC_601] = { COLOR_PRIMARIES_BT601_625,
TRANSFER_FUNC_SMPTE_170,
COLOR_SPACE_BT601 },
[J2K_COLOR_SPEC_REC_709] = { COLOR_PRIMARIES_BT709,
TRANSFER_FUNC_BT709,
COLOR_SPACE_BT709 },
[J2K_COLOR_SPEC_CIE_LUV] = { COLOR_PRIMARIES_UNDEF,
TRANSFER_FUNC_UNDEF,
COLOR_SPACE_UNDEF },
[J2K_COLOR_SPEC_CIE_XYZ] = { COLOR_PRIMARIES_UNDEF,
TRANSFER_FUNC_UNDEF,
COLOR_SPACE_UNDEF },
[J2K_COLOR_SPEC_REC_2020] ={ COLOR_PRIMARIES_BT2020,
TRANSFER_FUNC_BT2020,
COLOR_SPACE_BT2020 },
[J2K_COLOR_SPEC_SMPTE_2084]={ COLOR_PRIMARIES_SMTPE_170,
TRANSFER_FUNC_SMPTE_ST2084,
COLOR_SPACE_BT2020 },
};
static inline void j2k_fill_color_profile(
enum j2k_color_specs_e e,
video_color_primaries_t *primaries,
video_transfer_func_t *transfer,
video_color_space_t *space )
{
if( e > J2K_COLOR_SPEC_UNKNOWN && e <= J2K_COLOR_SPEC_SMPTE_2084 )
{
*primaries = j2k_color_specifications[e].primaries;
*transfer = j2k_color_specifications[e].transfer;
*space = j2k_color_specifications[e].space;
}
}
static inline enum j2k_color_specs_e
j2k_get_color_spec( video_color_primaries_t primaries,
video_transfer_func_t transfer ,
video_color_space_t space )
{
enum j2k_color_specs_e e;
for( e = J2K_COLOR_SPEC_UNKNOWN; e <= J2K_COLOR_SPEC_SMPTE_2084; e++ )
{
if( primaries == j2k_color_specifications[e].primaries &&
transfer == j2k_color_specifications[e].transfer &&
space == j2k_color_specifications[e].space )
{
return e;
}
}
return J2K_COLOR_SPEC_UNKNOWN;
}
#endif
