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tornavis/source/blender/imbuf/intern/jp2.cc

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/* SPDX-FileCopyrightText: 2023 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup imbuf
*/
#include "MEM_guardedalloc.h"
#include "BLI_fileops.h"
#include "IMB_filetype.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "IMB_colormanagement.h"
#include "IMB_colormanagement_intern.h"
#include "openjpeg.h"
#include <cstring>
#define JP2_FILEHEADER_SIZE 12
static const char JP2_HEAD[] = {
0x0, 0x0, 0x0, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A};
static const char J2K_HEAD[] = {0xFF, 0x4F, 0xFF, 0x51, 0x00};
/* We only need this because of how the presets are set */
/* this typedef is copied from 'openjpeg-1.5.0/applications/codec/image_to_j2k.c' */
struct img_fol_t {
/** The directory path of the folder containing input images. */
char *imgdirpath;
/** Output format. */
char *out_format;
/** Enable option. */
char set_imgdir;
/** Enable Cod Format for output. */
char set_out_format;
/** User specified rate stored in case of cinema option. */
float *rates;
};
static bool check_jp2(const uchar *mem, const size_t size) /* J2K_CFMT */
{
if (size < sizeof(JP2_HEAD)) {
return false;
}
return memcmp(JP2_HEAD, mem, sizeof(JP2_HEAD)) ? false : true;
}
static bool check_j2k(const uchar *mem, const size_t size) /* J2K_CFMT */
{
if (size < sizeof(J2K_HEAD)) {
return false;
}
return memcmp(J2K_HEAD, mem, sizeof(J2K_HEAD)) ? false : true;
}
static OPJ_CODEC_FORMAT format_from_header(const uchar mem[JP2_FILEHEADER_SIZE], const size_t size)
{
if (check_jp2(mem, size)) {
return OPJ_CODEC_JP2;
}
if (check_j2k(mem, size)) {
return OPJ_CODEC_J2K;
}
return OPJ_CODEC_UNKNOWN;
}
bool imb_is_a_jp2(const uchar *buf, size_t size)
{
return (check_jp2(buf, size) || check_j2k(buf, size));
}
/**
* sample error callback expecting a FILE* client object
*/
static void error_callback(const char *msg, void *client_data)
{
FILE *stream = (FILE *)client_data;
fprintf(stream, "[ERROR] %s", msg);
}
/**
* sample warning callback expecting a FILE* client object
*/
static void warning_callback(const char *msg, void *client_data)
{
FILE *stream = (FILE *)client_data;
fprintf(stream, "[WARNING] %s", msg);
}
#ifdef DEBUG
/**
* sample debug callback expecting no client object
*/
static void info_callback(const char *msg, void *client_data)
{
FILE *stream = (FILE *)client_data;
fprintf(stream, "[INFO] %s", msg);
}
#endif
#define PIXEL_LOOPER_BEGIN(_rect) \
for (y = h - 1; y != uint(-1); y--) { \
for (i = y * w, i_next = (y + 1) * w; i < i_next; i++, _rect += 4) {
#define PIXEL_LOOPER_BEGIN_CHANNELS(_rect, _channels) \
for (y = h - 1; y != uint(-1); y--) { \
for (i = y * w, i_next = (y + 1) * w; i < i_next; i++, _rect += _channels) {
#define PIXEL_LOOPER_END \
} \
} \
(void)0
/* -------------------------------------------------------------------- */
/** \name Buffer Stream
* \{ */
struct BufInfo {
const uchar *buf;
const uchar *cur;
OPJ_OFF_T len;
};
static void opj_read_from_buffer_free(void * /*p_user_data*/)
{
/* NOP. */
}
static OPJ_SIZE_T opj_read_from_buffer(void *p_buffer, OPJ_SIZE_T p_nb_bytes, void *p_user_data)
{
BufInfo *p_file = static_cast<BufInfo *>(p_user_data);
OPJ_UINT32 l_nb_read;
if (p_file->cur + p_nb_bytes < p_file->buf + p_file->len) {
l_nb_read = p_nb_bytes;
}
else {
l_nb_read = (OPJ_UINT32)(p_file->buf + p_file->len - p_file->cur);
}
memcpy(p_buffer, p_file->cur, l_nb_read);
p_file->cur += l_nb_read;
return l_nb_read ? l_nb_read : ((OPJ_SIZE_T)-1);
}
#if 0
static OPJ_SIZE_T opj_write_from_buffer(void *p_buffer, OPJ_SIZE_T p_nb_bytes, void *p_user_data)
{
struct BufInfo *p_file = p_user_data;
memcpy(p_file->cur, p_buffer, p_nb_bytes);
p_file->cur += p_nb_bytes;
p_file->len += p_nb_bytes;
return p_nb_bytes;
}
#endif
static OPJ_OFF_T opj_skip_from_buffer(OPJ_OFF_T p_nb_bytes, void *p_user_data)
{
BufInfo *p_file = static_cast<BufInfo *>(p_user_data);
if (p_file->cur + p_nb_bytes < p_file->buf + p_file->len) {
p_file->cur += p_nb_bytes;
return p_nb_bytes;
}
p_file->cur = p_file->buf + p_file->len;
return (OPJ_OFF_T)-1;
}
static OPJ_BOOL opj_seek_from_buffer(OPJ_OFF_T p_nb_bytes, void *p_user_data)
{
BufInfo *p_file = static_cast<BufInfo *>(p_user_data);
if (p_nb_bytes < p_file->len) {
p_file->cur = p_file->buf + p_nb_bytes;
return OPJ_TRUE;
}
p_file->cur = p_file->buf + p_file->len;
return OPJ_FALSE;
}
/**
* Stream wrapper for memory buffer
* (would be nice if this was supported by the API).
*/
static opj_stream_t *opj_stream_create_from_buffer(BufInfo *p_file,
OPJ_UINT32 p_size,
OPJ_BOOL p_is_read_stream)
{
opj_stream_t *l_stream = opj_stream_create(p_size, p_is_read_stream);
if (l_stream == nullptr) {
return nullptr;
}
opj_stream_set_user_data(l_stream, p_file, opj_read_from_buffer_free);
opj_stream_set_user_data_length(l_stream, p_file->len);
opj_stream_set_read_function(l_stream, opj_read_from_buffer);
#if 0 /* UNUSED */
opj_stream_set_write_function(l_stream, opj_write_from_buffer);
#endif
opj_stream_set_skip_function(l_stream, opj_skip_from_buffer);
opj_stream_set_seek_function(l_stream, opj_seek_from_buffer);
return l_stream;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name File Stream
* \{ */
static void opj_free_from_file(void *p_user_data)
{
FILE *f = static_cast<FILE *>(p_user_data);
fclose(f);
}
static OPJ_UINT64 opj_get_data_length_from_file(void *p_user_data)
{
FILE *p_file = static_cast<FILE *>(p_user_data);
OPJ_OFF_T file_length = 0;
fseek(p_file, 0, SEEK_END);
file_length = ftell(p_file);
fseek(p_file, 0, SEEK_SET);
return (OPJ_UINT64)file_length;
}
static OPJ_SIZE_T opj_read_from_file(void *p_buffer, OPJ_SIZE_T p_nb_bytes, void *p_user_data)
{
FILE *p_file = static_cast<FILE *>(p_user_data);
OPJ_SIZE_T l_nb_read = fread(p_buffer, 1, p_nb_bytes, p_file);
return l_nb_read ? l_nb_read : (OPJ_SIZE_T)-1;
}
static OPJ_SIZE_T opj_write_from_file(void *p_buffer, OPJ_SIZE_T p_nb_bytes, void *p_user_data)
{
FILE *p_file = static_cast<FILE *>(p_user_data);
return fwrite(p_buffer, 1, p_nb_bytes, p_file);
}
static OPJ_OFF_T opj_skip_from_file(OPJ_OFF_T p_nb_bytes, void *p_user_data)
{
FILE *p_file = static_cast<FILE *>(p_user_data);
if (fseek(p_file, p_nb_bytes, SEEK_CUR)) {
return -1;
}
return p_nb_bytes;
}
static OPJ_BOOL opj_seek_from_file(OPJ_OFF_T p_nb_bytes, void *p_user_data)
{
FILE *p_file = static_cast<FILE *>(p_user_data);
if (fseek(p_file, p_nb_bytes, SEEK_SET)) {
return OPJ_FALSE;
}
return OPJ_TRUE;
}
/**
* Stream wrapper for memory file
* (would be nice if this was supported by the API).
*/
static opj_stream_t *opj_stream_create_from_file(const char *filepath,
OPJ_UINT32 p_size,
OPJ_BOOL p_is_read_stream,
FILE **r_file)
{
FILE *p_file = BLI_fopen(filepath, p_is_read_stream ? "rb" : "wb");
if (p_file == nullptr) {
return nullptr;
}
opj_stream_t *l_stream = opj_stream_create(p_size, p_is_read_stream);
if (l_stream == nullptr) {
fclose(p_file);
return nullptr;
}
opj_stream_set_user_data(l_stream, p_file, opj_free_from_file);
opj_stream_set_user_data_length(l_stream, opj_get_data_length_from_file(p_file));
opj_stream_set_write_function(l_stream, opj_write_from_file);
opj_stream_set_read_function(l_stream, opj_read_from_file);
opj_stream_set_skip_function(l_stream, opj_skip_from_file);
opj_stream_set_seek_function(l_stream, opj_seek_from_file);
if (r_file) {
*r_file = p_file;
}
return l_stream;
}
/** \} */
static ImBuf *imb_load_jp2_stream(opj_stream_t *stream,
OPJ_CODEC_FORMAT p_format,
int flags,
char colorspace[IM_MAX_SPACE]);
ImBuf *imb_load_jp2(const uchar *mem, size_t size, int flags, char colorspace[IM_MAX_SPACE])
{
const OPJ_CODEC_FORMAT format = (size > JP2_FILEHEADER_SIZE) ? format_from_header(mem, size) :
OPJ_CODEC_UNKNOWN;
BufInfo buf_wrapper = {};
buf_wrapper.buf = mem;
buf_wrapper.cur = mem;
buf_wrapper.len = OPJ_OFF_T(size);
opj_stream_t *stream = opj_stream_create_from_buffer(
&buf_wrapper, OPJ_J2K_STREAM_CHUNK_SIZE, true);
ImBuf *ibuf = imb_load_jp2_stream(stream, format, flags, colorspace);
opj_stream_destroy(stream);
return ibuf;
}
ImBuf *imb_load_jp2_filepath(const char *filepath, int flags, char colorspace[IM_MAX_SPACE])
{
FILE *p_file = nullptr;
uchar mem[JP2_FILEHEADER_SIZE];
opj_stream_t *stream = opj_stream_create_from_file(
filepath, OPJ_J2K_STREAM_CHUNK_SIZE, true, &p_file);
if (stream) {
return nullptr;
}
if (fread(mem, sizeof(mem), 1, p_file) != sizeof(mem)) {
opj_stream_destroy(stream);
return nullptr;
}
fseek(p_file, 0, SEEK_SET);
const OPJ_CODEC_FORMAT format = format_from_header(mem, sizeof(mem));
ImBuf *ibuf = imb_load_jp2_stream(stream, format, flags, colorspace);
opj_stream_destroy(stream);
return ibuf;
}
static ImBuf *imb_load_jp2_stream(opj_stream_t *stream,
const OPJ_CODEC_FORMAT format,
int flags,
char colorspace[IM_MAX_SPACE])
{
if (format == OPJ_CODEC_UNKNOWN) {
return nullptr;
}
ImBuf *ibuf = nullptr;
bool use_float = false; /* for precision higher than 8 use float */
bool use_alpha = false;
long signed_offsets[4] = {0, 0, 0, 0};
int float_divs[4] = {1, 1, 1, 1};
uint i, i_next, w, h, planes;
uint y;
int *r, *g, *b, *a; /* matching 'opj_image_comp.data' type */
opj_dparameters_t parameters; /* decompression parameters */
opj_image_t *image = nullptr;
opj_codec_t *codec = nullptr; /* handle to a decompressor */
/* both 8, 12 and 16 bit JP2Ks are default to standard byte colorspace */
colorspace_set_default_role(colorspace, IM_MAX_SPACE, COLOR_ROLE_DEFAULT_BYTE);
/* set decoding parameters to default values */
opj_set_default_decoder_parameters(&parameters);
/* JPEG 2000 compressed image data */
/* get a decoder handle */
codec = opj_create_decompress(format);
/* configure the event callbacks (not required) */
opj_set_error_handler(codec, error_callback, stderr);
opj_set_warning_handler(codec, warning_callback, stderr);
#ifdef DEBUG /* too noisy */
opj_set_info_handler(codec, info_callback, stderr);
#endif
/* setup the decoder decoding parameters using the current image and user parameters */
if (opj_setup_decoder(codec, &parameters) == false) {
goto finally;
}
if (opj_read_header(stream, codec, &image) == false) {
printf("OpenJPEG error: failed to read the header\n");
goto finally;
}
/* decode the stream and fill the image structure */
if (opj_decode(codec, stream, image) == false) {
fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
goto finally;
}
if ((image->numcomps * image->x1 * image->y1) == 0) {
fprintf(stderr, "\nError: invalid raw image parameters\n");
goto finally;
}
w = image->comps[0].w;
h = image->comps[0].h;
switch (image->numcomps) {
case 1: /* Gray-scale. */
case 3: /* Color. */
planes = 24;
use_alpha = false;
break;
default: /* 2 or 4 - Gray-scale or Color + alpha. */
planes = 32; /* Gray-scale + alpha. */
use_alpha = true;
break;
}
i = image->numcomps;
if (i > 4) {
i = 4;
}
while (i) {
i--;
if (image->comps[i].prec > 8) {
use_float = true;
}
if (image->comps[i].sgnd) {
signed_offsets[i] = 1 << (image->comps[i].prec - 1);
}
/* only needed for float images but doesn't hurt to calc this */
float_divs[i] = (1 << image->comps[i].prec) - 1;
}
ibuf = IMB_allocImBuf(w, h, planes, use_float ? IB_rectfloat : IB_rect);
if (ibuf == nullptr) {
goto finally;
}
ibuf->ftype = IMB_FTYPE_JP2;
if (true /* is_jp2 */) {
ibuf->foptions.flag |= JP2_JP2;
}
else {
ibuf->foptions.flag |= JP2_J2K;
}
if (use_float) {
float *rect_float = ibuf->float_buffer.data;
if (image->numcomps < 3) {
r = image->comps[0].data;
a = (use_alpha) ? image->comps[1].data : nullptr;
/* Gray-scale 12bits+ */
if (use_alpha) {
a = image->comps[1].data;
PIXEL_LOOPER_BEGIN (rect_float) {
rect_float[0] = rect_float[1] = rect_float[2] = float(r[i] + signed_offsets[0]) /
float_divs[0];
rect_float[3] = (a[i] + signed_offsets[1]) / float_divs[1];
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_float) {
rect_float[0] = rect_float[1] = rect_float[2] = float(r[i] + signed_offsets[0]) /
float_divs[0];
rect_float[3] = 1.0f;
}
PIXEL_LOOPER_END;
}
}
else {
r = image->comps[0].data;
g = image->comps[1].data;
b = image->comps[2].data;
/* RGB or RGBA 12bits+ */
if (use_alpha) {
a = image->comps[3].data;
PIXEL_LOOPER_BEGIN (rect_float) {
rect_float[0] = float(r[i] + signed_offsets[0]) / float_divs[0];
rect_float[1] = float(g[i] + signed_offsets[1]) / float_divs[1];
rect_float[2] = float(b[i] + signed_offsets[2]) / float_divs[2];
rect_float[3] = float(a[i] + signed_offsets[3]) / float_divs[3];
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_float) {
rect_float[0] = float(r[i] + signed_offsets[0]) / float_divs[0];
rect_float[1] = float(g[i] + signed_offsets[1]) / float_divs[1];
rect_float[2] = float(b[i] + signed_offsets[2]) / float_divs[2];
rect_float[3] = 1.0f;
}
PIXEL_LOOPER_END;
}
}
}
else {
uchar *rect_uchar = ibuf->byte_buffer.data;
if (image->numcomps < 3) {
r = image->comps[0].data;
a = (use_alpha) ? image->comps[1].data : nullptr;
/* Gray-scale. */
if (use_alpha) {
a = image->comps[3].data;
PIXEL_LOOPER_BEGIN (rect_uchar) {
rect_uchar[0] = rect_uchar[1] = rect_uchar[2] = (r[i] + signed_offsets[0]);
rect_uchar[3] = a[i] + signed_offsets[1];
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_uchar) {
rect_uchar[0] = rect_uchar[1] = rect_uchar[2] = (r[i] + signed_offsets[0]);
rect_uchar[3] = 255;
}
PIXEL_LOOPER_END;
}
}
else {
r = image->comps[0].data;
g = image->comps[1].data;
b = image->comps[2].data;
/* 8bit RGB or RGBA */
if (use_alpha) {
a = image->comps[3].data;
PIXEL_LOOPER_BEGIN (rect_uchar) {
rect_uchar[0] = r[i] + signed_offsets[0];
rect_uchar[1] = g[i] + signed_offsets[1];
rect_uchar[2] = b[i] + signed_offsets[2];
rect_uchar[3] = a[i] + signed_offsets[3];
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_uchar) {
rect_uchar[0] = r[i] + signed_offsets[0];
rect_uchar[1] = g[i] + signed_offsets[1];
rect_uchar[2] = b[i] + signed_offsets[2];
rect_uchar[3] = 255;
}
PIXEL_LOOPER_END;
}
}
}
if (flags & IB_rect) {
IMB_rect_from_float(ibuf);
}
finally:
/* free remaining structures */
if (codec) {
opj_destroy_codec(codec);
}
if (image) {
opj_image_destroy(image);
}
return ibuf;
}
#if 0
static opj_image_t *rawtoimage(const char *filename,
opj_cparameters_t *parameters,
raw_cparameters_t *raw_cp)
#endif
/* prec can be 8, 12, 16 */
/* Use inline because the float passed can be a function call
* that would end up being called many times. */
#if 0
# define UPSAMPLE_8_TO_12(_val) ((_val << 4) | (_val & ((1 << 4) - 1)))
# define UPSAMPLE_8_TO_16(_val) ((_val << 8) + _val)
# define DOWNSAMPLE_FLOAT_TO_8BIT(_val) \
(_val) <= 0.0f ? 0 : ((_val) >= 1.0f ? 255 : int(255.0f * (_val)))
# define DOWNSAMPLE_FLOAT_TO_12BIT(_val) \
(_val) <= 0.0f ? 0 : ((_val) >= 1.0f ? 4095 : int(4095.0f * (_val)))
# define DOWNSAMPLE_FLOAT_TO_16BIT(_val) \
(_val) <= 0.0f ? 0 : ((_val) >= 1.0f ? 65535 : int(65535.0f * (_val)))
#else
BLI_INLINE int UPSAMPLE_8_TO_12(const uchar _val)
{
return (_val << 4) | (_val & ((1 << 4) - 1));
}
BLI_INLINE int UPSAMPLE_8_TO_16(const uchar _val)
{
return (_val << 8) + _val;
}
BLI_INLINE int DOWNSAMPLE_FLOAT_TO_8BIT(const float _val)
{
return (_val) <= 0.0f ? 0 : ((_val) >= 1.0f ? 255 : int(255.0f * (_val)));
}
BLI_INLINE int DOWNSAMPLE_FLOAT_TO_12BIT(const float _val)
{
return (_val) <= 0.0f ? 0 : ((_val) >= 1.0f ? 4095 : int(4095.0f * (_val)));
}
BLI_INLINE int DOWNSAMPLE_FLOAT_TO_16BIT(const float _val)
{
return (_val) <= 0.0f ? 0 : ((_val) >= 1.0f ? 65535 : int(65535.0f * (_val)));
}
#endif
/*
* 2048x1080 (2K) at 24 fps or 48 fps, or 4096x2160 (4K) at 24 fps;
* 3x12 bits per pixel, XYZ color space
*
* - In 2K, for Scope (2.39:1) presentation 2048x858 pixels of the image is used
* - In 2K, for Flat (1.85:1) presentation 1998x1080 pixels of the image is used
*/
/* ****************************** COPIED FROM image_to_j2k.c */
/* ----------------------------------------------------------------------- */
#define CINEMA_24_CS 1302083 /* Code-stream length for 24fps. */
#define CINEMA_48_CS 651041 /* Code-stream length for 48fps. */
#define COMP_24_CS 1041666 /* Maximum size per color component for 2K & 4K @ 24fps. */
#define COMP_48_CS 520833 /* Maximum size per color component for 2K @ 48fps. */
static int init_4K_poc(opj_poc_t *POC, int numres)
{
POC[0].tile = 1;
POC[0].resno0 = 0;
POC[0].compno0 = 0;
POC[0].layno1 = 1;
POC[0].resno1 = numres - 1;
POC[0].compno1 = 3;
POC[0].prg1 = OPJ_CPRL;
POC[1].tile = 1;
POC[1].resno0 = numres - 1;
POC[1].compno0 = 0;
POC[1].layno1 = 1;
POC[1].resno1 = numres;
POC[1].compno1 = 3;
POC[1].prg1 = OPJ_CPRL;
return 2;
}
static void cinema_parameters(opj_cparameters_t *parameters)
{
parameters->tile_size_on = 0; /* false */
parameters->cp_tdx = 1;
parameters->cp_tdy = 1;
/* Tile part. */
parameters->tp_flag = 'C';
parameters->tp_on = 1;
/* Tile and Image shall be at (0, 0). */
parameters->cp_tx0 = 0;
parameters->cp_ty0 = 0;
parameters->image_offset_x0 = 0;
parameters->image_offset_y0 = 0;
/* Code-block size = 32 * 32. */
parameters->cblockw_init = 32;
parameters->cblockh_init = 32;
parameters->csty |= 0x01;
/* The progression order shall be CPRL. */
parameters->prog_order = OPJ_CPRL;
/* No ROI */
parameters->roi_compno = -1;
parameters->subsampling_dx = 1;
parameters->subsampling_dy = 1;
/* 9-7 transform */
parameters->irreversible = 1;
}
static void cinema_setup_encoder(opj_cparameters_t *parameters,
opj_image_t *image,
img_fol_t *img_fol)
{
int i;
float temp_rate;
switch (parameters->cp_cinema) {
case OPJ_CINEMA2K_24:
case OPJ_CINEMA2K_48:
if (parameters->numresolution > 6) {
parameters->numresolution = 6;
}
if (!((image->comps[0].w == 2048) || (image->comps[0].h == 1080))) {
fprintf(stdout,
"Image coordinates %u x %u is not 2K compliant.\nJPEG Digital Cinema Profile-3 "
"(2K profile) compliance requires that at least one of coordinates match 2048 x "
"1080\n",
image->comps[0].w,
image->comps[0].h);
parameters->cp_rsiz = OPJ_STD_RSIZ;
}
else {
parameters->cp_rsiz = OPJ_CINEMA2K;
}
break;
case OPJ_CINEMA4K_24:
if (parameters->numresolution < 1) {
parameters->numresolution = 1;
}
else if (parameters->numresolution > 7) {
parameters->numresolution = 7;
}
if (!((image->comps[0].w == 4096) || (image->comps[0].h == 2160))) {
fprintf(stdout,
"Image coordinates %u x %u is not 4K compliant.\nJPEG Digital Cinema Profile-4"
"(4K profile) compliance requires that at least one of coordinates match 4096 x "
"2160\n",
image->comps[0].w,
image->comps[0].h);
parameters->cp_rsiz = OPJ_STD_RSIZ;
}
else {
parameters->cp_rsiz = OPJ_CINEMA4K;
}
parameters->numpocs = init_4K_poc(parameters->POC, parameters->numresolution);
break;
case OPJ_OFF:
/* do nothing */
break;
}
switch (parameters->cp_cinema) {
case OPJ_CINEMA2K_24:
case OPJ_CINEMA4K_24:
for (i = 0; i < parameters->tcp_numlayers; i++) {
temp_rate = 0;
if (img_fol->rates[i] == 0) {
parameters->tcp_rates[0] = float(image->numcomps * image->comps[0].w *
image->comps[0].h * image->comps[0].prec) /
(CINEMA_24_CS * 8 * image->comps[0].dx * image->comps[0].dy);
}
else {
temp_rate = float(image->numcomps * image->comps[0].w * image->comps[0].h *
image->comps[0].prec) /
(img_fol->rates[i] * 8 * image->comps[0].dx * image->comps[0].dy);
if (temp_rate > CINEMA_24_CS) {
parameters->tcp_rates[i] = float(image->numcomps * image->comps[0].w *
image->comps[0].h * image->comps[0].prec) /
(CINEMA_24_CS * 8 * image->comps[0].dx *
image->comps[0].dy);
}
else {
parameters->tcp_rates[i] = img_fol->rates[i];
}
}
}
parameters->max_comp_size = COMP_24_CS;
break;
case OPJ_CINEMA2K_48:
for (i = 0; i < parameters->tcp_numlayers; i++) {
temp_rate = 0;
if (img_fol->rates[i] == 0) {
parameters->tcp_rates[0] = float(image->numcomps * image->comps[0].w *
image->comps[0].h * image->comps[0].prec) /
(CINEMA_48_CS * 8 * image->comps[0].dx * image->comps[0].dy);
}
else {
temp_rate = float(image->numcomps * image->comps[0].w * image->comps[0].h *
image->comps[0].prec) /
(img_fol->rates[i] * 8 * image->comps[0].dx * image->comps[0].dy);
if (temp_rate > CINEMA_48_CS) {
parameters->tcp_rates[0] = float(image->numcomps * image->comps[0].w *
image->comps[0].h * image->comps[0].prec) /
(CINEMA_48_CS * 8 * image->comps[0].dx *
image->comps[0].dy);
}
else {
parameters->tcp_rates[i] = img_fol->rates[i];
}
}
}
parameters->max_comp_size = COMP_48_CS;
break;
case OPJ_OFF:
/* do nothing */
break;
}
parameters->cp_disto_alloc = 1;
}
static float channel_colormanage_noop(float value)
{
return value;
}
static opj_image_t *ibuftoimage(ImBuf *ibuf, opj_cparameters_t *parameters)
{
uchar *rect_uchar;
float *rect_float, from_straight[4];
uint subsampling_dx = parameters->subsampling_dx;
uint subsampling_dy = parameters->subsampling_dy;
uint i, i_next, numcomps, w, h, prec;
uint y;
int *r, *g, *b, *a; /* matching 'opj_image_comp.data' type */
OPJ_COLOR_SPACE color_space;
opj_image_cmptparm_t cmptparm[4]; /* maximum of 4 components */
opj_image_t *image = nullptr;
float (*chanel_colormanage_cb)(float);
img_fol_t img_fol; /* only needed for cinema presets */
memset(&img_fol, 0, sizeof(img_fol_t));
if (ibuf->float_buffer.colorspace || (ibuf->colormanage_flag & IMB_COLORMANAGE_IS_DATA)) {
/* float buffer was managed already, no need in color space conversion */
chanel_colormanage_cb = channel_colormanage_noop;
}
else {
/* standard linear-to-SRGB conversion if float buffer wasn't managed */
chanel_colormanage_cb = linearrgb_to_srgb;
}
if (ibuf->foptions.flag & JP2_CINE) {
if (ibuf->x == 4096 || ibuf->y == 2160) {
parameters->cp_cinema = OPJ_CINEMA4K_24;
}
else {
if (ibuf->foptions.flag & JP2_CINE_48FPS) {
parameters->cp_cinema = OPJ_CINEMA2K_48;
}
else {
parameters->cp_cinema = OPJ_CINEMA2K_24;
}
}
if (parameters->cp_cinema) {
img_fol.rates = (float *)MEM_mallocN(parameters->tcp_numlayers * sizeof(float), "jp2_rates");
for (i = 0; i < parameters->tcp_numlayers; i++) {
img_fol.rates[i] = parameters->tcp_rates[i];
}
cinema_parameters(parameters);
}
color_space = (ibuf->foptions.flag & JP2_YCC) ? OPJ_CLRSPC_SYCC : OPJ_CLRSPC_SRGB;
prec = 12;
numcomps = 3;
}
else {
/* Get settings from the imbuf */
color_space = (ibuf->foptions.flag & JP2_YCC) ? OPJ_CLRSPC_SYCC : OPJ_CLRSPC_SRGB;
if (ibuf->foptions.flag & JP2_16BIT) {
prec = 16;
}
else if (ibuf->foptions.flag & JP2_12BIT) {
prec = 12;
}
else {
prec = 8;
}
/* 32bit images == alpha channel. */
/* Gray-scale not supported yet. */
numcomps = (ibuf->planes == 32) ? 4 : 3;
}
w = ibuf->x;
h = ibuf->y;
/* initialize image components */
memset(&cmptparm, 0, sizeof(opj_image_cmptparm_t[4]));
for (i = 0; i < numcomps; i++) {
cmptparm[i].prec = prec;
/* Deprecated in openjpeg 2.5. */
#if (OPJ_VERSION_MAJOR < 2) || (OPJ_VERSION_MAJOR == 2 && OPJ_VERSION_MINOR < 5)
cmptparm[i].bpp = prec;
#endif
cmptparm[i].sgnd = 0;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = w;
cmptparm[i].h = h;
}
/* create the image */
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if (!image) {
printf("Error: opj_image_create() failed\n");
return nullptr;
}
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = image->x0 + (w - 1) * subsampling_dx + 1 + image->x0;
image->y1 = image->y0 + (h - 1) * subsampling_dy + 1 + image->y0;
/* set image data */
rect_uchar = ibuf->byte_buffer.data;
rect_float = ibuf->float_buffer.data;
/* set the destination channels */
r = image->comps[0].data;
g = image->comps[1].data;
b = image->comps[2].data;
a = (numcomps == 4) ? image->comps[3].data : nullptr;
if (rect_float && rect_uchar && prec == 8) {
/* No need to use the floating point buffer, just write the 8 bits from the char buffer */
rect_float = nullptr;
}
if (rect_float) {
int channels_in_float = ibuf->channels ? ibuf->channels : 4;
switch (prec) {
case 8: /* Convert blenders float color channels to 8, 12 or 16bit ints */
if (numcomps == 4) {
if (channels_in_float == 4) {
PIXEL_LOOPER_BEGIN (rect_float) {
premul_to_straight_v4_v4(from_straight, rect_float);
r[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(from_straight[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(from_straight[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(from_straight[2]));
a[i] = DOWNSAMPLE_FLOAT_TO_8BIT(from_straight[3]);
}
PIXEL_LOOPER_END;
}
else if (channels_in_float == 3) {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 3) {
r[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[2]));
a[i] = 255;
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 1) {
r[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = b[i] = r[i];
a[i] = 255;
}
PIXEL_LOOPER_END;
}
}
else {
if (channels_in_float == 4) {
PIXEL_LOOPER_BEGIN (rect_float) {
premul_to_straight_v4_v4(from_straight, rect_float);
r[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(from_straight[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(from_straight[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(from_straight[2]));
}
PIXEL_LOOPER_END;
}
else if (channels_in_float == 3) {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 3) {
r[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[2]));
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 1) {
r[i] = DOWNSAMPLE_FLOAT_TO_8BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = b[i] = r[i];
}
PIXEL_LOOPER_END;
}
}
break;
case 12:
if (numcomps == 4) {
if (channels_in_float == 4) {
PIXEL_LOOPER_BEGIN (rect_float) {
premul_to_straight_v4_v4(from_straight, rect_float);
r[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(from_straight[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(from_straight[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(from_straight[2]));
a[i] = DOWNSAMPLE_FLOAT_TO_12BIT(from_straight[3]);
}
PIXEL_LOOPER_END;
}
else if (channels_in_float == 3) {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 3) {
r[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[2]));
a[i] = 4095;
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 1) {
r[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = b[i] = r[i];
a[i] = 4095;
}
PIXEL_LOOPER_END;
}
}
else {
if (channels_in_float == 4) {
PIXEL_LOOPER_BEGIN (rect_float) {
premul_to_straight_v4_v4(from_straight, rect_float);
r[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(from_straight[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(from_straight[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(from_straight[2]));
}
PIXEL_LOOPER_END;
}
else if (channels_in_float == 3) {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 3) {
r[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[2]));
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 1) {
r[i] = DOWNSAMPLE_FLOAT_TO_12BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = b[i] = r[i];
}
PIXEL_LOOPER_END;
}
}
break;
case 16:
if (numcomps == 4) {
if (channels_in_float == 4) {
PIXEL_LOOPER_BEGIN (rect_float) {
premul_to_straight_v4_v4(from_straight, rect_float);
r[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(from_straight[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(from_straight[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(from_straight[2]));
a[i] = DOWNSAMPLE_FLOAT_TO_16BIT(from_straight[3]);
}
PIXEL_LOOPER_END;
}
else if (channels_in_float == 3) {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 3) {
r[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[2]));
a[i] = 65535;
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 1) {
r[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = b[i] = r[i];
a[i] = 65535;
}
PIXEL_LOOPER_END;
}
}
else {
if (channels_in_float == 4) {
PIXEL_LOOPER_BEGIN (rect_float) {
premul_to_straight_v4_v4(from_straight, rect_float);
r[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(from_straight[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(from_straight[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(from_straight[2]));
}
PIXEL_LOOPER_END;
}
else if (channels_in_float == 3) {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 3) {
r[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[1]));
b[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[2]));
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN_CHANNELS (rect_float, 1) {
r[i] = DOWNSAMPLE_FLOAT_TO_16BIT(chanel_colormanage_cb(rect_float[0]));
g[i] = b[i] = r[i];
}
PIXEL_LOOPER_END;
}
}
break;
}
}
else {
/* Just use rect. */
switch (prec) {
case 8:
if (numcomps == 4) {
PIXEL_LOOPER_BEGIN (rect_uchar) {
r[i] = rect_uchar[0];
g[i] = rect_uchar[1];
b[i] = rect_uchar[2];
a[i] = rect_uchar[3];
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_uchar) {
r[i] = rect_uchar[0];
g[i] = rect_uchar[1];
b[i] = rect_uchar[2];
}
PIXEL_LOOPER_END;
}
break;
case 12: /* Up Sampling, a bit pointless but best write the bit depth requested */
if (numcomps == 4) {
PIXEL_LOOPER_BEGIN (rect_uchar) {
r[i] = UPSAMPLE_8_TO_12(rect_uchar[0]);
g[i] = UPSAMPLE_8_TO_12(rect_uchar[1]);
b[i] = UPSAMPLE_8_TO_12(rect_uchar[2]);
a[i] = UPSAMPLE_8_TO_12(rect_uchar[3]);
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_uchar) {
r[i] = UPSAMPLE_8_TO_12(rect_uchar[0]);
g[i] = UPSAMPLE_8_TO_12(rect_uchar[1]);
b[i] = UPSAMPLE_8_TO_12(rect_uchar[2]);
}
PIXEL_LOOPER_END;
}
break;
case 16:
if (numcomps == 4) {
PIXEL_LOOPER_BEGIN (rect_uchar) {
r[i] = UPSAMPLE_8_TO_16(rect_uchar[0]);
g[i] = UPSAMPLE_8_TO_16(rect_uchar[1]);
b[i] = UPSAMPLE_8_TO_16(rect_uchar[2]);
a[i] = UPSAMPLE_8_TO_16(rect_uchar[3]);
}
PIXEL_LOOPER_END;
}
else {
PIXEL_LOOPER_BEGIN (rect_uchar) {
r[i] = UPSAMPLE_8_TO_16(rect_uchar[0]);
g[i] = UPSAMPLE_8_TO_16(rect_uchar[1]);
b[i] = UPSAMPLE_8_TO_16(rect_uchar[2]);
}
PIXEL_LOOPER_END;
}
break;
}
}
/* Decide if MCT should be used */
parameters->tcp_mct = image->numcomps == 3 ? 1 : 0;
if (parameters->cp_cinema) {
cinema_setup_encoder(parameters, image, &img_fol);
}
if (img_fol.rates) {
MEM_freeN(img_fol.rates);
}
return image;
}
bool imb_save_jp2_stream(ImBuf *ibuf, opj_stream_t *stream, int flags);
bool imb_save_jp2(ImBuf *ibuf, const char *filepath, int flags)
{
opj_stream_t *stream = opj_stream_create_from_file(
filepath, OPJ_J2K_STREAM_CHUNK_SIZE, false, nullptr);
if (stream == nullptr) {
return false;
}
const bool ok = imb_save_jp2_stream(ibuf, stream, flags);
opj_stream_destroy(stream);
return ok;
}
/* Found write info at http://users.ece.gatech.edu/~slabaugh/personal/c/bitmapUnix.c */
bool imb_save_jp2_stream(ImBuf *ibuf, opj_stream_t *stream, int /*flags*/)
{
int quality = ibuf->foptions.quality;
opj_cparameters_t parameters; /* compression parameters */
opj_image_t *image = nullptr;
/* set encoding parameters to default values */
opj_set_default_encoder_parameters(&parameters);
/* compression ratio */
/* invert range, from 10-100, 100-1
* Where JPEG see's 1 and highest quality (lossless) and 100 is very low quality. */
parameters.tcp_rates[0] = ((100 - quality) / 90.0f * 99.0f) + 1;
parameters.tcp_numlayers = 1; /* only one resolution */
parameters.cp_disto_alloc = 1;
image = ibuftoimage(ibuf, &parameters);
opj_codec_t *codec = nullptr;
bool ok = false;
/* JP2 format output */
{
/* get a JP2 compressor handle */
OPJ_CODEC_FORMAT format = OPJ_CODEC_JP2;
if (ibuf->foptions.flag & JP2_J2K) {
format = OPJ_CODEC_J2K;
}
else if (ibuf->foptions.flag & JP2_JP2) {
format = OPJ_CODEC_JP2;
}
codec = opj_create_compress(format);
/* configure the event callbacks (not required) */
opj_set_error_handler(codec, error_callback, stderr);
opj_set_warning_handler(codec, warning_callback, stderr);
#ifdef DEBUG /* too noisy */
opj_set_info_handler(codec, info_callback, stderr);
#endif
/* setup the encoder parameters using the current image and using user parameters */
if (opj_setup_encoder(codec, &parameters, image) == false) {
goto finally;
}
if (opj_start_compress(codec, image, stream) == false) {
goto finally;
}
if (opj_encode(codec, stream) == false) {
goto finally;
}
if (opj_end_compress(codec, stream) == false) {
goto finally;
}
}
ok = true;
finally:
/* free remaining compression structures */
if (codec) {
opj_destroy_codec(codec);
}
/* free image data */
if (image) {
opj_image_destroy(image);
}
if (ok == false) {
fprintf(stderr, "failed to encode image\n");
}
return ok;
}
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