static opj_bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio,
unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset)
{
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
if (jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to read boxhdr\n");
return OPJ_FALSE;
}
do {
if (JP2_JP2C != box.type) {
if (box.length <= 8) {
return OPJ_FALSE;
}
cio_skip(cio, box.length - 8);
if (jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE) {
return OPJ_FALSE;
}
}
} while (JP2_JP2C != box.type);
*j2k_codestream_offset = cio_tell(cio);
if (box.length <= 8) {
return OPJ_FALSE;
}
*j2k_codestream_length = box.length - 8;
return OPJ_TRUE;
}
static opj_bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset) {
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to read boxhdr\n");
return OPJ_FALSE;
}
do {
if(JP2_JP2C != box.type) {
/* cf. http://code.google.com/p/openjpeg/issues/detail?id=155 */
if (box.length < 8) return OPJ_FALSE;
cio_skip(cio, box.length - 8);
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
}
} while(JP2_JP2C != box.type);
*j2k_codestream_offset = cio_tell(cio);
/* cf. http://code.google.com/p/openjpeg/issues/detail?id=155 */
if (box.length < 8) return OPJ_FALSE;
*j2k_codestream_length = box.length - 8;
return OPJ_TRUE;
}
int jp2_read_colr(jp2_struct_t * jp2_struct)
{
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_COLR != box.type) {
fprintf(stderr, "Error: Expected COLR Marker\n");
return 1;
}
jp2_struct->meth = cio_read(1); // METH
jp2_struct->precedence = cio_read(1); // PRECEDENCE
jp2_struct->approx = cio_read(1); // APPROX
if (jp2_struct->meth == 1)
jp2_struct->enumcs = cio_read(4); // EnumCS
else
cio_read(1); // PROFILE
if (cio_tell() - box.init_pos != box.length) {
fprintf(stderr, "Error with BPCC Box\n");
return 1;
}
return 0;
}
/*
* Read the IHDR box
*
* Image Header box
*
*/
int jp2_read_ihdr(jp2_struct_t * jp2_struct)
{
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_IHDR != box.type) {
fprintf(stderr, "Error: Expected IHDR Marker\n");
return 1;
}
jp2_struct->h = cio_read(4); // HEIGHT
jp2_struct->w = cio_read(4); // WIDTH
jp2_struct->numcomps = cio_read(2); // NC
jp2_struct->bpc = cio_read(1); // BPC
jp2_struct->C = cio_read(1); // C
jp2_struct->UnkC = cio_read(1); // UnkC
jp2_struct->IPR = cio_read(1); // IPR
if (cio_tell() - box.init_pos != box.length) {
fprintf(stderr, "Error with IHDR Box\n");
return 1;
}
return 0;
}
static opj_bool jp2_read_ftyp(opj_jp2_t *jp2, opj_cio_t *cio) {
int i;
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to read boxhdr\n");
return OPJ_FALSE;
}
if (JP2_FTYP != box.type) {
opj_event_msg(cinfo, EVT_ERROR, "Expected FTYP Marker\n");
return OPJ_FALSE;
}
jp2->brand = cio_read(cio, 4); /* BR */
jp2->minversion = cio_read(cio, 4); /* MinV */
jp2->numcl = (box.length - 16) / 4;
jp2->cl = (unsigned int *) opj_malloc(jp2->numcl * sizeof(unsigned int));
for (i = 0; i < (int)jp2->numcl; i++) {
jp2->cl[i] = cio_read(cio, 4); /* CLi */
}
if (cio_tell(cio) - box.init_pos != box.length) {
opj_event_msg(cinfo, EVT_ERROR, "Error with FTYP Box\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
static opj_bool jp2_read_bpcc(opj_jp2_t *jp2, opj_cio_t *cio) {
unsigned int i;
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to read boxhdr\n");
return OPJ_FALSE;
}
if (JP2_BPCC != box.type) {
opj_event_msg(cinfo, EVT_ERROR, "Expected BPCC Marker\n");
return OPJ_FALSE;
}
for (i = 0; i < jp2->numcomps; i++) {
jp2->comps[i].bpcc = cio_read(cio, 1);
}
if (cio_tell(cio) - box.init_pos != box.length) {
opj_event_msg(cinfo, EVT_ERROR, "Error with BPCC Box\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
static opj_bool jp2_read_ihdr(opj_jp2_t *jp2, opj_cio_t *cio) {
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
if(jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to read boxhdr\n");
return OPJ_FALSE;
}
if (JP2_IHDR != box.type) {
opj_event_msg(cinfo, EVT_ERROR, "Expected IHDR Marker\n");
return OPJ_FALSE;
}
jp2->h = cio_read(cio, 4); /* HEIGHT */
jp2->w = cio_read(cio, 4); /* WIDTH */
jp2->numcomps = cio_read(cio, 2); /* NC */
jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
jp2->bpc = cio_read(cio, 1); /* BPC */
jp2->C = cio_read(cio, 1); /* C */
jp2->UnkC = cio_read(cio, 1); /* UnkC */
jp2->IPR = cio_read(cio, 1); /* IPR */
if (cio_tell(cio) - box.init_pos != box.length) {
opj_event_msg(cinfo, EVT_ERROR, "Error with IHDR Box\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
/*
* Read the FTYP box
*
* File type box
*
*/
int jp2_read_ftyp(jp2_struct_t * jp2_struct)
{
int i;
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_FTYP != box.type) {
fprintf(stderr, "Error: Excpected FTYP Marker\n");
return 1;
}
jp2_struct->brand = cio_read(4); /* BR */
jp2_struct->minversion = cio_read(4); /* MinV */
jp2_struct->numcl = (box.length - 16) / 4;
jp2_struct->cl =
(unsigned int *) malloc(jp2_struct->numcl * sizeof(unsigned int));
for (i = jp2_struct->numcl; i > 0; i--)
jp2_struct->cl[i] = cio_read(4); /* CLi */
if (cio_tell() - box.init_pos != box.length) {
fprintf(stderr, "Error with FTYP Box\n");
return 1;
}
return 0;
}
static opj_bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio)
{
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
if (jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to read boxhdr\n");
return OPJ_FALSE;
}
if (JP2_JP != box.type) {
opj_event_msg(cinfo, EVT_ERROR, "Expected JP Marker\n");
return OPJ_FALSE;
}
if (0x0d0a870a != cio_read(cio, 4)) {
opj_event_msg(cinfo, EVT_ERROR, "Error with JP Marker\n");
return OPJ_FALSE;
}
if (cio_tell(cio) - box.init_pos != box.length) {
opj_event_msg(cinfo, EVT_ERROR, "Error with JP Box size\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
/*
* Read the JP2H box
*
* JP2 Header box
*
*/
int jp2_read_jp2h(jp2_struct_t * jp2_struct)
{
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_JP2H != box.type) {
fprintf(stderr, "Error: Expected JP2H Marker\n");
return 1;
}
if (jp2_read_ihdr(jp2_struct))
return 1;
if (jp2_struct->bpc == 255)
if (jp2_read_bpcc(jp2_struct))
return 1;
if (jp2_read_colr(jp2_struct))
return 1;
if (cio_tell() - box.init_pos != box.length) {
fprintf(stderr, "Error with JP2H Box\n");
return 1;
}
return 0;
}
static bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset) {
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
jp2_read_boxhdr(cinfo, cio, &box);
do {
if(JP2_JP2C != box.type) {
cio_skip(cio, box.length - 8);
jp2_read_boxhdr(cinfo, cio, &box);
}
} while(JP2_JP2C != box.type);
*j2k_codestream_offset = cio_tell(cio);
*j2k_codestream_length = box.length - 8;
return true;
}
bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio) {
opj_jp2_box_t box;
int skip_len;
opj_common_ptr cinfo = jp2->cinfo;
jp2_read_boxhdr(cinfo, cio, &box);
do {
if (JP2_JP2H != box.type) {
if (box.type == JP2_JP2C) {
opj_event_msg(cinfo, EVT_ERROR, "Expected JP2H Marker\n");
return false;
}
cio_skip(cio, box.length - 8);
jp2_read_boxhdr(cinfo, cio, &box);
}
} while(JP2_JP2H != box.type);
if (!jp2_read_ihdr(jp2, cio))
return false;
if (jp2->bpc == 255) {
if (!jp2_read_bpcc(jp2, cio))
return false;
}
if (!jp2_read_colr(jp2, cio))
return false;
skip_len = box.init_pos + box.length - cio_tell(cio);
if (skip_len < 0) {
opj_event_msg(cinfo, EVT_ERROR, "Error with JP2H Box\n");
return false;
}
cio_skip(cio, box.init_pos + box.length - cio_tell(cio));
return true;
}
static bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio) {
opj_jp2_box_t box;
int skip_len;
opj_common_ptr cinfo = jp2->cinfo;
jp2_read_boxhdr(cinfo, cio, &box);
do {
if (JP2_COLR != box.type) {
cio_skip(cio, box.length - 8);
jp2_read_boxhdr(cinfo, cio, &box);
}
} while(JP2_COLR != box.type);
jp2->meth = cio_read(cio, 1); /* METH */
jp2->precedence = cio_read(cio, 1); /* PRECEDENCE */
jp2->approx = cio_read(cio, 1); /* APPROX */
if (jp2->meth == 1) {
jp2->enumcs = cio_read(cio, 4); /* EnumCS */
} else {
/* skip PROFILE */
skip_len = box.init_pos + box.length - cio_tell(cio);
if (skip_len < 0) {
opj_event_msg(cinfo, EVT_ERROR, "Error with JP2H box size\n");
return false;
}
cio_skip(cio, box.init_pos + box.length - cio_tell(cio));
}
if (cio_tell(cio) - box.init_pos != box.length) {
opj_event_msg(cinfo, EVT_ERROR, "Error with BPCC Box\n");
return false;
}
return true;
}
int jp2_read_bpcc(jp2_struct_t * jp2_struct)
{
unsigned int i;
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_BPCC != box.type) {
fprintf(stderr, "Error: Expected BPCC Marker\n");
return 1;
}
for (i = 0; i < jp2_struct->numcomps; i++)
jp2_struct->comps[i].bpcc = cio_read(1);
if (cio_tell() - box.init_pos != box.length) {
fprintf(stderr, "Error with BPCC Box\n");
return 1;
}
return 0;
}
/*
* Read the JP box
*
* JPEG 2000 signature
*
* return 1 if error else 0
*/
int jp2_read_jp()
{
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_JP != box.type) {
fprintf(stderr, "Error: Expected JP Marker\n");
return 1;
}
if (0x0d0a870a != cio_read(4)) {
fprintf(stderr, "Error with JP Marker\n");
return 1;
}
if (cio_tell() - box.init_pos != box.length) {
fprintf(stderr, "Error with JP Box size\n");
return 1;
}
return 0;
}
int jp2_read_jp2c(unsigned char *src, int len, jp2_struct_t * jp2_struct,
j2k_cp_t * cp)
{
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_JP2C != box.type) {
fprintf(stderr, "Error: Expected JP2C Marker\n");
return 1;
}
src += cio_tell();
if (j2k_decode(src, len, jp2_struct->image, cp) == 0) {
fprintf(stderr, "JP2F box: failed to decode J2K bitstream image!\n");
return 1;
}
return 0;
}
static bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio) {
opj_jp2_box_t box;
opj_common_ptr cinfo = jp2->cinfo;
jp2_read_boxhdr(cinfo, cio, &box);
if (JP2_JP != box.type) {
opj_event_msg(cinfo, EVT_ERROR, "Expected JP Marker\n");
return false;
}
if (0x0d0a870a != cio_read(cio, 4)) {
opj_event_msg(cinfo, EVT_ERROR, "Error with JP Marker\n");
return false;
}
if (cio_tell(cio) - box.init_pos != box.length) {
opj_event_msg(cinfo, EVT_ERROR, "Error with JP Box size\n");
return false;
}
return true;
}
opj_bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio, opj_jp2_color_t *color)
{
opj_jp2_box_t box;
int jp2h_end;
opj_common_ptr cinfo = jp2->cinfo;
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
do {
if (JP2_JP2H != box.type)
{
if (box.type == JP2_JP2C)
{
opj_event_msg(cinfo, EVT_ERROR, "Expected JP2H Marker\n");
return OPJ_FALSE;
}
if (box.length <= 8) return OPJ_FALSE;
cio_skip(cio, box.length - 8);
if(cio->bp >= cio->end) return OPJ_FALSE;
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
}
} while(JP2_JP2H != box.type);
if (!jp2_read_ihdr(jp2, cio))
return OPJ_FALSE;
jp2h_end = box.init_pos + box.length;
if (jp2->bpc == 255)
{
if (!jp2_read_bpcc(jp2, cio))
return OPJ_FALSE;
}
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
while(cio_tell(cio) < jp2h_end)
{
if(box.type == JP2_COLR)
{
if( !jp2_read_colr(jp2, cio, &box, color))
{
if (box.length <= 8) return OPJ_FALSE;
cio_seek(cio, box.init_pos + 8);
cio_skip(cio, box.length - 8);
}
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
continue;
}
if(box.type == JP2_CDEF && !jp2->ignore_pclr_cmap_cdef)
{
if( !jp2_read_cdef(jp2, cio, &box, color))
{
if (box.length <= 8) return OPJ_FALSE;
cio_seek(cio, box.init_pos + 8);
cio_skip(cio, box.length - 8);
}
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
continue;
}
if(box.type == JP2_PCLR && !jp2->ignore_pclr_cmap_cdef)
{
if( !jp2_read_pclr(jp2, cio, &box, color))
{
if (box.length <= 8) return OPJ_FALSE;
cio_seek(cio, box.init_pos + 8);
cio_skip(cio, box.length - 8);
}
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
continue;
}
if(box.type == JP2_CMAP && !jp2->ignore_pclr_cmap_cdef)
{
if( !jp2_read_cmap(jp2, cio, &box, color))
{
if (box.length <= 8) return OPJ_FALSE;
cio_seek(cio, box.init_pos + 8);
cio_skip(cio, box.length - 8);
}
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
continue;
}
if (box.length <= 8) return OPJ_FALSE;
cio_seek(cio, box.init_pos + 8);
cio_skip(cio, box.length - 8);
if( jp2_read_boxhdr(cinfo, cio, &box) == OPJ_FALSE ) return OPJ_FALSE;
}/* while(cio_tell(cio) < box_end) */
cio_seek(cio, jp2h_end);
/* Part 1, I.5.3.3 : 'must contain at least one' */
return (color->jp2_has_colr == 1);
}/* jp2_read_jp2h() */