// Copyright 2014 PDFium Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
#include "../../../include/fxcodec/fx_codec.h" | |
#include "codec_int.h" | |
#include "../fx_libopenjpeg/libopenjpeg20/openjpeg.h" | |
#include "../lcms2/include/fx_lcms2.h" | |
static void fx_error_callback(const char *msg, void *client_data) | |
{ | |
(void)client_data; | |
} | |
static void fx_warning_callback(const char *msg, void *client_data) | |
{ | |
(void)client_data; | |
} | |
static void fx_info_callback(const char *msg, void *client_data) | |
{ | |
(void)client_data; | |
} | |
typedef struct { | |
const unsigned char* src_data; | |
int src_size; | |
int offset; | |
} decodeData; | |
static OPJ_SIZE_T opj_read_from_memory (void * p_buffer, OPJ_SIZE_T p_nb_bytes, decodeData* srcData) | |
{ | |
if(srcData == NULL || srcData->src_size == 0 || srcData->src_data == NULL || srcData->offset >= srcData->src_size) { | |
return -1; | |
} | |
OPJ_SIZE_T readlength = p_nb_bytes; | |
OPJ_SIZE_T bufferLength = (OPJ_SIZE_T)(srcData->src_size - srcData->offset); | |
if(bufferLength <= 0) { | |
return 0; | |
} | |
if(bufferLength <= p_nb_bytes) { | |
readlength = bufferLength; | |
} | |
memcpy(p_buffer, &(srcData->src_data[srcData->offset]), readlength); | |
srcData->offset += (int)readlength; | |
return readlength; | |
} | |
static OPJ_SIZE_T opj_write_from_memory (void * p_buffer, OPJ_SIZE_T p_nb_bytes, decodeData* srcData) | |
{ | |
if(srcData == NULL || srcData->src_size == 0 || srcData->src_data == NULL || srcData->offset >= srcData->src_size) { | |
return -1; | |
} | |
OPJ_SIZE_T writeLength = p_nb_bytes; | |
OPJ_SIZE_T bufferLength = (OPJ_SIZE_T)(srcData->src_size - srcData->offset); | |
if(bufferLength <= p_nb_bytes) { | |
writeLength = bufferLength; | |
} | |
memcpy((void*&)(srcData->src_data[srcData->offset]), p_buffer, writeLength); | |
srcData->offset += (int)writeLength; | |
return writeLength; | |
} | |
static OPJ_OFF_T opj_skip_from_memory (OPJ_OFF_T p_nb_bytes, decodeData* srcData) | |
{ | |
if(srcData == NULL || srcData->src_size == 0 || srcData->src_data == NULL || srcData->offset >= srcData->src_size) { | |
return -1; | |
} | |
OPJ_OFF_T postion = srcData->offset + p_nb_bytes; | |
if(postion < 0 ) { | |
postion = 0; | |
} else if (postion > srcData->src_size) { | |
} | |
srcData->offset = (int)postion; | |
return p_nb_bytes; | |
} | |
static OPJ_BOOL opj_seek_from_memory (OPJ_OFF_T p_nb_bytes, decodeData * srcData) | |
{ | |
if(srcData == NULL || srcData->src_size == 0 || srcData->src_data == NULL || srcData->offset >= srcData->src_size) { | |
return -1; | |
} | |
srcData->offset = (int)p_nb_bytes; | |
if(srcData->offset < 0) { | |
srcData->offset = 0; | |
} else if(srcData->offset > srcData->src_size) { | |
srcData->offset = srcData->src_size; | |
} | |
return OPJ_TRUE; | |
} | |
opj_stream_t* fx_opj_stream_create_memory_stream (decodeData* data, OPJ_SIZE_T p_size, OPJ_BOOL p_is_read_stream) | |
{ | |
opj_stream_t* l_stream = 00; | |
if (!data || ! data->src_data || data->src_size <= 0 ) { | |
return NULL; | |
} | |
l_stream = opj_stream_create(p_size, p_is_read_stream); | |
if (! l_stream) { | |
return NULL; | |
} | |
opj_stream_set_user_data_v3(l_stream, data, NULL); | |
opj_stream_set_user_data_length(l_stream, data->src_size); | |
opj_stream_set_read_function(l_stream, (opj_stream_read_fn) opj_read_from_memory); | |
opj_stream_set_write_function(l_stream, (opj_stream_write_fn) opj_write_from_memory); | |
opj_stream_set_skip_function(l_stream, (opj_stream_skip_fn) opj_skip_from_memory); | |
opj_stream_set_seek_function(l_stream, (opj_stream_seek_fn) opj_seek_from_memory); | |
return l_stream; | |
} | |
static void sycc_to_rgb(int offset, int upb, int y, int cb, int cr, | |
int *out_r, int *out_g, int *out_b) | |
{ | |
int r, g, b; | |
cb -= offset; | |
cr -= offset; | |
r = y + (int)(1.402 * (float)cr); | |
if(r < 0) { | |
r = 0; | |
} else if(r > upb) { | |
r = upb; | |
} *out_r = r; | |
g = y - (int)(0.344 * (float)cb + 0.714 * (float)cr); | |
if(g < 0) { | |
g = 0; | |
} else if(g > upb) { | |
g = upb; | |
} *out_g = g; | |
b = y + (int)(1.772 * (float)cb); | |
if(b < 0) { | |
b = 0; | |
} else if(b > upb) { | |
b = upb; | |
} *out_b = b; | |
} | |
static void sycc444_to_rgb(opj_image_t *img) | |
{ | |
int *d0, *d1, *d2, *r, *g, *b; | |
const int *y, *cb, *cr; | |
int maxw, maxh, max, i, offset, upb; | |
i = (int)img->comps[0].prec; | |
offset = 1 << (i - 1); | |
upb = (1 << i) - 1; | |
maxw = (int)img->comps[0].w; | |
maxh = (int)img->comps[0].h; | |
max = maxw * maxh; | |
y = img->comps[0].data; | |
cb = img->comps[1].data; | |
cr = img->comps[2].data; | |
d0 = r = FX_Alloc(int, (size_t)max); | |
d1 = g = FX_Alloc(int, (size_t)max); | |
d2 = b = FX_Alloc(int, (size_t)max); | |
for(i = 0; i < max; ++i) { | |
sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); | |
++y; | |
++cb; | |
++cr; | |
++r; | |
++g; | |
++b; | |
} | |
FX_Free(img->comps[0].data); | |
img->comps[0].data = d0; | |
FX_Free(img->comps[1].data); | |
img->comps[1].data = d1; | |
FX_Free(img->comps[2].data); | |
img->comps[2].data = d2; | |
} | |
static void sycc422_to_rgb(opj_image_t *img) | |
{ | |
int *d0, *d1, *d2, *r, *g, *b; | |
const int *y, *cb, *cr; | |
int maxw, maxh, max, offset, upb; | |
int i, j; | |
i = (int)img->comps[0].prec; | |
offset = 1 << (i - 1); | |
upb = (1 << i) - 1; | |
maxw = (int)img->comps[0].w; | |
maxh = (int)img->comps[0].h; | |
max = maxw * maxh; | |
y = img->comps[0].data; | |
cb = img->comps[1].data; | |
cr = img->comps[2].data; | |
d0 = r = FX_Alloc(int, (size_t)max); | |
d1 = g = FX_Alloc(int, (size_t)max); | |
d2 = b = FX_Alloc(int, (size_t)max); | |
for(i = 0; i < maxh; ++i) { | |
for(j = 0; j < maxw; j += 2) { | |
sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); | |
++y; | |
++r; | |
++g; | |
++b; | |
sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); | |
++y; | |
++r; | |
++g; | |
++b; | |
++cb; | |
++cr; | |
} | |
} | |
FX_Free(img->comps[0].data); | |
img->comps[0].data = d0; | |
FX_Free(img->comps[1].data); | |
img->comps[1].data = d1; | |
FX_Free(img->comps[2].data); | |
img->comps[2].data = d2; | |
img->comps[1].w = maxw; | |
img->comps[1].h = maxh; | |
img->comps[2].w = maxw; | |
img->comps[2].h = maxh; | |
img->comps[1].w = (OPJ_UINT32)maxw; | |
img->comps[1].h = (OPJ_UINT32)maxh; | |
img->comps[2].w = (OPJ_UINT32)maxw; | |
img->comps[2].h = (OPJ_UINT32)maxh; | |
img->comps[1].dx = img->comps[0].dx; | |
img->comps[2].dx = img->comps[0].dx; | |
img->comps[1].dy = img->comps[0].dy; | |
img->comps[2].dy = img->comps[0].dy; | |
} | |
static void sycc420_to_rgb(opj_image_t *img) | |
{ | |
int *d0, *d1, *d2, *r, *g, *b, *nr, *ng, *nb; | |
const int *y, *cb, *cr, *ny; | |
int maxw, maxh, max, offset, upb; | |
int i, j; | |
i = (int)img->comps[0].prec; | |
offset = 1 << (i - 1); | |
upb = (1 << i) - 1; | |
maxw = (int)img->comps[0].w; | |
maxh = (int)img->comps[0].h; | |
max = maxw * maxh; | |
y = img->comps[0].data; | |
cb = img->comps[1].data; | |
cr = img->comps[2].data; | |
d0 = r = FX_Alloc(int, (size_t)max); | |
d1 = g = FX_Alloc(int, (size_t)max); | |
d2 = b = FX_Alloc(int, (size_t)max); | |
for(i = 0; i < maxh; i += 2) { | |
ny = y + maxw; | |
nr = r + maxw; | |
ng = g + maxw; | |
nb = b + maxw; | |
for(j = 0; j < maxw; j += 2) { | |
sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); | |
++y; | |
++r; | |
++g; | |
++b; | |
sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); | |
++y; | |
++r; | |
++g; | |
++b; | |
sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb); | |
++ny; | |
++nr; | |
++ng; | |
++nb; | |
sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb); | |
++ny; | |
++nr; | |
++ng; | |
++nb; | |
++cb; | |
++cr; | |
} | |
y += maxw; | |
r += maxw; | |
g += maxw; | |
b += maxw; | |
} | |
FX_Free(img->comps[0].data); | |
img->comps[0].data = d0; | |
FX_Free(img->comps[1].data); | |
img->comps[1].data = d1; | |
FX_Free(img->comps[2].data); | |
img->comps[2].data = d2; | |
img->comps[1].w = maxw; | |
img->comps[1].h = maxh; | |
img->comps[2].w = maxw; | |
img->comps[2].h = maxh; | |
img->comps[1].w = (OPJ_UINT32)maxw; | |
img->comps[1].h = (OPJ_UINT32)maxh; | |
img->comps[2].w = (OPJ_UINT32)maxw; | |
img->comps[2].h = (OPJ_UINT32)maxh; | |
img->comps[1].dx = img->comps[0].dx; | |
img->comps[2].dx = img->comps[0].dx; | |
img->comps[1].dy = img->comps[0].dy; | |
img->comps[2].dy = img->comps[0].dy; | |
} | |
void color_sycc_to_rgb(opj_image_t *img) | |
{ | |
if(img->numcomps < 3) { | |
img->color_space = OPJ_CLRSPC_GRAY; | |
return; | |
} | |
if((img->comps[0].dx == 1) | |
&& (img->comps[1].dx == 2) | |
&& (img->comps[2].dx == 2) | |
&& (img->comps[0].dy == 1) | |
&& (img->comps[1].dy == 2) | |
&& (img->comps[2].dy == 2)) { | |
sycc420_to_rgb(img); | |
} else if((img->comps[0].dx == 1) | |
&& (img->comps[1].dx == 2) | |
&& (img->comps[2].dx == 2) | |
&& (img->comps[0].dy == 1) | |
&& (img->comps[1].dy == 1) | |
&& (img->comps[2].dy == 1)) { | |
sycc422_to_rgb(img); | |
} else if((img->comps[0].dx == 1) | |
&& (img->comps[1].dx == 1) | |
&& (img->comps[2].dx == 1) | |
&& (img->comps[0].dy == 1) | |
&& (img->comps[1].dy == 1) | |
&& (img->comps[2].dy == 1)) { | |
sycc444_to_rgb(img); | |
} else { | |
return; | |
} | |
img->color_space = OPJ_CLRSPC_SRGB; | |
} | |
void color_apply_icc_profile(opj_image_t *image) | |
{ | |
cmsHPROFILE in_prof, out_prof; | |
cmsHTRANSFORM transform; | |
cmsColorSpaceSignature in_space, out_space; | |
cmsUInt32Number intent, in_type, out_type, nr_samples; | |
int *r, *g, *b; | |
int prec, i, max, max_w, max_h; | |
OPJ_COLOR_SPACE oldspace; | |
in_prof = | |
cmsOpenProfileFromMem(image->icc_profile_buf, image->icc_profile_len); | |
if(in_prof == NULL) { | |
return; | |
} | |
in_space = cmsGetPCS(in_prof); | |
out_space = cmsGetColorSpace(in_prof); | |
intent = cmsGetHeaderRenderingIntent(in_prof); | |
max_w = (int)image->comps[0].w; | |
max_h = (int)image->comps[0].h; | |
prec = (int)image->comps[0].prec; | |
oldspace = image->color_space; | |
if(out_space == cmsSigRgbData) { | |
if( prec <= 8 ) { | |
in_type = TYPE_RGB_8; | |
out_type = TYPE_RGB_8; | |
} else { | |
in_type = TYPE_RGB_16; | |
out_type = TYPE_RGB_16; | |
} | |
out_prof = cmsCreate_sRGBProfile(); | |
image->color_space = OPJ_CLRSPC_SRGB; | |
} else if(out_space == cmsSigGrayData) { | |
if( prec <= 8 ) { | |
in_type = TYPE_GRAY_8; | |
out_type = TYPE_RGB_8; | |
} else { | |
in_type = TYPE_GRAY_16; | |
out_type = TYPE_RGB_16; | |
} | |
out_prof = cmsCreate_sRGBProfile(); | |
image->color_space = OPJ_CLRSPC_SRGB; | |
} else if(out_space == cmsSigYCbCrData) { | |
in_type = TYPE_YCbCr_16; | |
out_type = TYPE_RGB_16; | |
out_prof = cmsCreate_sRGBProfile(); | |
image->color_space = OPJ_CLRSPC_SRGB; | |
} else { | |
return; | |
} | |
transform = cmsCreateTransform(in_prof, in_type, | |
out_prof, out_type, intent, 0); | |
cmsCloseProfile(in_prof); | |
cmsCloseProfile(out_prof); | |
if(transform == NULL) { | |
image->color_space = oldspace; | |
return; | |
} | |
if(image->numcomps > 2) { | |
if( prec <= 8 ) { | |
unsigned char *inbuf, *outbuf, *in, *out; | |
max = max_w * max_h; | |
nr_samples = (cmsUInt32Number)max * 3 * (cmsUInt32Number)sizeof(unsigned char); | |
in = inbuf = FX_Alloc(unsigned char, nr_samples); | |
out = outbuf = FX_Alloc(unsigned char, nr_samples); | |
r = image->comps[0].data; | |
g = image->comps[1].data; | |
b = image->comps[2].data; | |
for(i = 0; i < max; ++i) { | |
*in++ = (unsigned char) * r++; | |
*in++ = (unsigned char) * g++; | |
*in++ = (unsigned char) * b++; | |
} | |
cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max); | |
r = image->comps[0].data; | |
g = image->comps[1].data; | |
b = image->comps[2].data; | |
for(i = 0; i < max; ++i) { | |
*r++ = (int) * out++; | |
*g++ = (int) * out++; | |
*b++ = (int) * out++; | |
} | |
FX_Free(inbuf); | |
FX_Free(outbuf); | |
} else { | |
unsigned short *inbuf, *outbuf, *in, *out; | |
max = max_w * max_h; | |
nr_samples = (cmsUInt32Number)max * 3 * (cmsUInt32Number)sizeof(unsigned short); | |
in = inbuf = FX_Alloc(unsigned short, nr_samples); | |
out = outbuf = FX_Alloc(unsigned short, nr_samples); | |
r = image->comps[0].data; | |
g = image->comps[1].data; | |
b = image->comps[2].data; | |
for(i = 0; i < max; ++i) { | |
*in++ = (unsigned short) * r++; | |
*in++ = (unsigned short) * g++; | |
*in++ = (unsigned short) * b++; | |
} | |
cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max); | |
r = image->comps[0].data; | |
g = image->comps[1].data; | |
b = image->comps[2].data; | |
for(i = 0; i < max; ++i) { | |
*r++ = (int) * out++; | |
*g++ = (int) * out++; | |
*b++ = (int) * out++; | |
} | |
FX_Free(inbuf); | |
FX_Free(outbuf); | |
} | |
} else { | |
unsigned char *in, *inbuf, *out, *outbuf; | |
max = max_w * max_h; | |
nr_samples = (cmsUInt32Number)max * 3 * sizeof(unsigned char); | |
in = inbuf = FX_Alloc(unsigned char, nr_samples); | |
out = outbuf = FX_Alloc(unsigned char, nr_samples); | |
image->comps = (opj_image_comp_t*) | |
realloc(image->comps, (image->numcomps + 2) * sizeof(opj_image_comp_t)); | |
if(image->numcomps == 2) { | |
image->comps[3] = image->comps[1]; | |
} | |
image->comps[1] = image->comps[0]; | |
image->comps[2] = image->comps[0]; | |
image->comps[1].data = FX_Alloc(int, (size_t)max); | |
FXSYS_memset8(image->comps[1].data, 0, sizeof(int) * (size_t)max); | |
image->comps[2].data = FX_Alloc(int, (size_t)max); | |
FXSYS_memset8(image->comps[2].data, 0, sizeof(int) * (size_t)max); | |
image->numcomps += 2; | |
r = image->comps[0].data; | |
for(i = 0; i < max; ++i) { | |
*in++ = (unsigned char) * r++; | |
} | |
cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max); | |
r = image->comps[0].data; | |
g = image->comps[1].data; | |
b = image->comps[2].data; | |
for(i = 0; i < max; ++i) { | |
*r++ = (int) * out++; | |
*g++ = (int) * out++; | |
*b++ = (int) * out++; | |
} | |
FX_Free(inbuf); | |
FX_Free(outbuf); | |
} | |
cmsDeleteTransform(transform); | |
} | |
void color_apply_conversion(opj_image_t *image) | |
{ | |
int *row; | |
int enumcs, numcomps; | |
numcomps = image->numcomps; | |
if(numcomps < 3) { | |
return; | |
} | |
row = (int*)image->icc_profile_buf; | |
enumcs = row[0]; | |
if(enumcs == 14) { | |
int *L, *a, *b, *red, *green, *blue, *src0, *src1, *src2; | |
double rl, ol, ra, oa, rb, ob, prec0, prec1, prec2; | |
double minL, maxL, mina, maxa, minb, maxb; | |
unsigned int default_type, il; | |
unsigned int i, max, illu; | |
cmsHPROFILE in, out; | |
cmsHTRANSFORM transform; | |
cmsUInt16Number RGB[3]; | |
cmsCIELab Lab; | |
illu = 0; | |
il = 0; | |
in = cmsCreateLab4Profile(NULL); | |
out = cmsCreate_sRGBProfile(); | |
transform = | |
cmsCreateTransform(in, TYPE_Lab_DBL, out, TYPE_RGB_16, | |
INTENT_PERCEPTUAL, 0); | |
cmsCloseProfile(in); | |
cmsCloseProfile(out); | |
if(transform == NULL) { | |
return; | |
} | |
prec0 = (double)image->comps[0].prec; | |
prec1 = (double)image->comps[1].prec; | |
prec2 = (double)image->comps[2].prec; | |
default_type = row[1]; | |
if(default_type == 0x44454600) { | |
rl = 100; | |
ra = 170; | |
rb = 200; | |
ol = 0; | |
oa = pow(2, prec1 - 1); | |
ob = pow(2, prec2 - 2) + pow(2, prec2 - 3); | |
} else { | |
rl = row[2]; | |
ra = row[4]; | |
rb = row[6]; | |
ol = row[3]; | |
oa = row[5]; | |
ob = row[7]; | |
} | |
L = src0 = image->comps[0].data; | |
a = src1 = image->comps[1].data; | |
b = src2 = image->comps[2].data; | |
max = image->comps[0].w * image->comps[0].h; | |
red = FX_Alloc(int, max); | |
image->comps[0].data = red; | |
green = FX_Alloc(int, max); | |
image->comps[1].data = green; | |
blue = FX_Alloc(int, max); | |
image->comps[2].data = blue; | |
minL = -(rl * ol) / (pow(2, prec0) - 1); | |
maxL = minL + rl; | |
mina = -(ra * oa) / (pow(2, prec1) - 1); | |
maxa = mina + ra; | |
minb = -(rb * ob) / (pow(2, prec2) - 1); | |
maxb = minb + rb; | |
for(i = 0; i < max; ++i) { | |
Lab.L = minL + (double)(*L) * (maxL - minL) / (pow(2, prec0) - 1); | |
++L; | |
Lab.a = mina + (double)(*a) * (maxa - mina) / (pow(2, prec1) - 1); | |
++a; | |
Lab.b = minb + (double)(*b) * (maxb - minb) / (pow(2, prec2) - 1); | |
++b; | |
cmsDoTransform(transform, &Lab, RGB, 1); | |
*red++ = RGB[0]; | |
*green++ = RGB[1]; | |
*blue++ = RGB[2]; | |
} | |
cmsDeleteTransform(transform); | |
FX_Free(src0); | |
FX_Free(src1); | |
FX_Free(src2); | |
image->color_space = OPJ_CLRSPC_SRGB; | |
image->comps[0].prec = 16; | |
image->comps[1].prec = 16; | |
image->comps[2].prec = 16; | |
return; | |
} | |
} | |
class CJPX_Decoder : public CFX_Object | |
{ | |
public: | |
CJPX_Decoder(); | |
~CJPX_Decoder(); | |
FX_BOOL Init(const unsigned char* src_data, int src_size); | |
void GetInfo(FX_DWORD& width, FX_DWORD& height, FX_DWORD& codestream_nComps, FX_DWORD& output_nComps); | |
FX_BOOL Decode(FX_LPBYTE dest_buf, int pitch, FX_BOOL bTranslateColor, FX_LPBYTE offsets); | |
FX_LPCBYTE m_SrcData; | |
int m_SrcSize; | |
opj_image_t *image; | |
opj_codec_t* l_codec; | |
opj_stream_t *l_stream; | |
FX_BOOL m_useColorSpace; | |
}; | |
CJPX_Decoder::CJPX_Decoder(): image(NULL), l_codec(NULL), l_stream(NULL), m_useColorSpace(FALSE) | |
{ | |
} | |
CJPX_Decoder::~CJPX_Decoder() | |
{ | |
if(l_codec) { | |
opj_destroy_codec(l_codec); | |
} | |
if(l_stream) { | |
opj_stream_destroy(l_stream); | |
} | |
if(image) { | |
opj_image_destroy(image); | |
} | |
} | |
FX_BOOL CJPX_Decoder::Init(const unsigned char* src_data, int src_size) | |
{ | |
opj_dparameters_t parameters; | |
try { | |
image = NULL; | |
m_SrcData = src_data; | |
m_SrcSize = src_size; | |
decodeData srcData; | |
srcData.offset = 0; | |
srcData.src_size = src_size; | |
srcData.src_data = src_data; | |
l_stream = fx_opj_stream_create_memory_stream(&srcData, OPJ_J2K_STREAM_CHUNK_SIZE, 1); | |
if (l_stream == NULL) { | |
return FALSE; | |
} | |
opj_set_default_decoder_parameters(¶meters); | |
parameters.decod_format = 0; | |
parameters.cod_format = 3; | |
if(FXSYS_memcmp32(m_SrcData, "\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a", 12) == 0) { | |
l_codec = opj_create_decompress(OPJ_CODEC_JP2); | |
parameters.decod_format = 1; | |
} else { | |
l_codec = opj_create_decompress(OPJ_CODEC_J2K); | |
} | |
if(!l_codec) { | |
return FALSE; | |
} | |
opj_set_info_handler(l_codec, fx_info_callback, 00); | |
opj_set_warning_handler(l_codec, fx_warning_callback, 00); | |
opj_set_error_handler(l_codec, fx_error_callback, 00); | |
if ( !opj_setup_decoder(l_codec, ¶meters) ) { | |
return FALSE; | |
} | |
if(! opj_read_header(l_stream, l_codec, &image)) { | |
image = NULL; | |
return FALSE; | |
} | |
if(this->m_useColorSpace) { | |
image->useColorSpace = 1; | |
} else { | |
image->useColorSpace = 0; | |
} | |
if (!parameters.nb_tile_to_decode) { | |
if (!opj_set_decode_area(l_codec, image, parameters.DA_x0, | |
parameters.DA_y0, parameters.DA_x1, parameters.DA_y1)) { | |
opj_image_destroy(image); | |
image = NULL; | |
return FALSE; | |
} | |
if (!(opj_decode(l_codec, l_stream, image) && opj_end_decompress(l_codec, l_stream))) { | |
opj_image_destroy(image); | |
image = NULL; | |
return FALSE; | |
} | |
} else { | |
if (!opj_get_decoded_tile(l_codec, l_stream, image, parameters.tile_index)) { | |
return FALSE; | |
} | |
} | |
opj_stream_destroy(l_stream); | |
l_stream = NULL; | |
if( image->color_space != OPJ_CLRSPC_SYCC | |
&& image->numcomps == 3 && image->comps[0].dx == image->comps[0].dy | |
&& image->comps[1].dx != 1 ) { | |
image->color_space = OPJ_CLRSPC_SYCC; | |
} else if (image->numcomps <= 2) { | |
image->color_space = OPJ_CLRSPC_GRAY; | |
} | |
if(image->color_space == OPJ_CLRSPC_SYCC) { | |
color_sycc_to_rgb(image); | |
} | |
if(image->icc_profile_buf && !image->useColorSpace) { | |
FX_Free(image->icc_profile_buf); | |
image->icc_profile_buf = NULL; | |
image->icc_profile_len = 0; | |
} | |
if(!image) { | |
return FALSE; | |
} | |
} catch (...) { | |
return FALSE; | |
} | |
return TRUE; | |
} | |
void CJPX_Decoder::GetInfo(FX_DWORD& width, FX_DWORD& height, FX_DWORD& codestream_nComps, FX_DWORD& output_nComps) | |
{ | |
width = (FX_DWORD)image->x1; | |
height = (FX_DWORD)image->y1; | |
output_nComps = codestream_nComps = (FX_DWORD)image->numcomps; | |
} | |
FX_BOOL CJPX_Decoder::Decode(FX_LPBYTE dest_buf, int pitch, FX_BOOL bTranslateColor, FX_LPBYTE offsets) | |
{ | |
FX_BYTE** channel_bufs; | |
int* adjust_comps; | |
int i, wid, hei, row, col, channel, src; | |
FX_BOOL flag; | |
FX_LPBYTE pChannel, pScanline, pPixel; | |
try { | |
if(image->comps[0].w != image->x1 || image->comps[0].h != image->y1) { | |
return FALSE; | |
} | |
if(pitch < (int)(image->comps[0].w * 8 * image->numcomps + 31) >> 5 << 2) { | |
return FALSE; | |
} | |
FXSYS_memset8(dest_buf, 0xff, image->y1 * pitch); | |
channel_bufs = FX_Alloc(FX_BYTE*, image->numcomps); | |
if (channel_bufs == NULL) { | |
return FALSE; | |
} | |
adjust_comps = FX_Alloc(int, image->numcomps); | |
if (adjust_comps == NULL) { | |
FX_Free(channel_bufs); | |
return FALSE; | |
} | |
flag = TRUE; | |
for (i = 0; i < (int)image->numcomps; i ++) { | |
channel_bufs[i] = dest_buf + offsets[i]; | |
adjust_comps[i] = image->comps[i].prec - 8; | |
if(i > 0) { | |
if(image->comps[i].dx != image->comps[i - 1].dx | |
|| image->comps[i].dy != image->comps[i - 1].dy | |
|| image->comps[i].prec != image->comps[i - 1].prec) { | |
flag = FALSE; | |
goto failed; | |
} | |
} | |
} | |
wid = image->comps[0].w; | |
hei = image->comps[0].h; | |
for (channel = 0; channel < (int)image->numcomps; channel++) { | |
pChannel = channel_bufs[channel]; | |
if(adjust_comps[channel] < 0) { | |
for(row = 0; row < hei; row++) { | |
pScanline = pChannel + row * pitch; | |
for (col = 0; col < wid; col++) { | |
pPixel = pScanline + col * image->numcomps; | |
src = image->comps[channel].data[row * wid + col]; | |
src += image->comps[channel].sgnd ? 1 << (image->comps[channel].prec - 1) : 0; | |
if (adjust_comps[channel] > 0) { | |
*pPixel = 0; | |
} else { | |
*pPixel = (FX_BYTE)(src << -adjust_comps[channel]); | |
} | |
} | |
} | |
} else { | |
for(row = 0; row < hei; row++) { | |
pScanline = pChannel + row * pitch; | |
for (col = 0; col < wid; col++) { | |
pPixel = pScanline + col * image->numcomps; | |
if (!image->comps[channel].data) continue; | |
src = image->comps[channel].data[row * wid + col]; | |
src += image->comps[channel].sgnd ? 1 << (image->comps[channel].prec - 1) : 0; | |
if (adjust_comps[channel] - 1 < 0) { | |
*pPixel = (FX_BYTE)((src >> adjust_comps[channel])); | |
} else { | |
int tmpPixel = (src >> adjust_comps[channel]) + ((src >> (adjust_comps[channel] - 1)) % 2); | |
if (tmpPixel > 255) { | |
tmpPixel = 255; | |
} else if (tmpPixel < 0) { | |
tmpPixel = 0; | |
} | |
*pPixel = (FX_BYTE)tmpPixel; | |
} | |
} | |
} | |
} | |
} | |
} catch (...) { | |
if (channel_bufs) { | |
FX_Free(channel_bufs); | |
} | |
FX_Free(adjust_comps); | |
return FALSE; | |
} | |
FX_Free(channel_bufs); | |
FX_Free(adjust_comps); | |
return TRUE; | |
failed: | |
FX_Free(channel_bufs); | |
FX_Free(adjust_comps); | |
return FALSE; | |
} | |
void initialize_transition_table(); | |
void initialize_significance_luts(); | |
void initialize_sign_lut(); | |
CCodec_JpxModule::CCodec_JpxModule() | |
{ | |
} | |
void* CCodec_JpxModule::CreateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size , FX_BOOL useColorSpace) | |
{ | |
CJPX_Decoder* pDecoder = FX_NEW CJPX_Decoder; | |
if (pDecoder == NULL) { | |
return NULL; | |
} | |
pDecoder->m_useColorSpace = useColorSpace; | |
if (!pDecoder->Init(src_buf, src_size)) { | |
delete pDecoder; | |
return NULL; | |
} | |
return pDecoder; | |
} | |
void CCodec_JpxModule::GetImageInfo(FX_LPVOID ctx, FX_DWORD& width, FX_DWORD& height, | |
FX_DWORD& codestream_nComps, FX_DWORD& output_nComps) | |
{ | |
CJPX_Decoder* pDecoder = (CJPX_Decoder*)ctx; | |
pDecoder->GetInfo(width, height, codestream_nComps, output_nComps); | |
} | |
FX_BOOL CCodec_JpxModule::Decode(void* ctx, FX_LPBYTE dest_data, int pitch, FX_BOOL bTranslateColor, FX_LPBYTE offsets) | |
{ | |
CJPX_Decoder* pDecoder = (CJPX_Decoder*)ctx; | |
return pDecoder->Decode(dest_data, pitch, bTranslateColor, offsets); | |
} | |
void CCodec_JpxModule::DestroyDecoder(void* ctx) | |
{ | |
CJPX_Decoder* pDecoder = (CJPX_Decoder*)ctx; | |
delete pDecoder; | |
} |