walkero
/
openjpeg
1
0
Fork 0
Code Issues Pull Requests Projects Releases 1 Wiki Activity

Encoder: avoid uint32 overflow when allocating memory for codestream buffer (fixes #1243)

This commit is contained in:
Even Rouault 2020-09-16 11:27:53 +02:00
parent cbee7891a0
commit 0863ccf291
No known key found for this signature in database
GPG Key ID: 33EBBFC47B3DD87D
1 changed files with 20 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
src/lib/openjp2/j2k.c
View File

@ -5203,7 +5203,7 @@ static OPJ_BOOL opj_j2k_update_rates(opj_j2k_t *p_j2k,
OPJ_FLOAT32 * l_rates = 0; OPJ_FLOAT32 * l_rates = 0;
OPJ_FLOAT32 l_sot_remove; OPJ_FLOAT32 l_sot_remove;
OPJ_UINT32 l_bits_empty, l_size_pixel; OPJ_UINT32 l_bits_empty, l_size_pixel;
OPJ_UINT32 l_tile_size = 0; OPJ_UINT64 l_tile_size = 0;
OPJ_UINT32 l_last_res; OPJ_UINT32 l_last_res;
OPJ_FLOAT32(* l_tp_stride_func)(opj_tcp_t *) = 00; OPJ_FLOAT32(* l_tp_stride_func)(opj_tcp_t *) = 00;
@ -5247,25 +5247,12 @@ static OPJ_BOOL opj_j2k_update_rates(opj_j2k_t *p_j2k,
l_rates = l_tcp->rates; l_rates = l_tcp->rates;
/* Modification of the RATE >> */ /* Modification of the RATE >> */
for (k = 0; k < l_tcp->numlayers; ++k) {
if (*l_rates > 0.0f) { if (*l_rates > 0.0f) {
*l_rates = (((OPJ_FLOAT32)(l_size_pixel * (OPJ_UINT32)(l_x1 - l_x0) * *l_rates = (OPJ_FLOAT32)(((OPJ_FLOAT64)l_size_pixel * (OPJ_UINT32)(
(OPJ_UINT32)(l_y1 - l_y0))) l_x1 - l_x0) *
/ (OPJ_UINT32)(l_y1 - l_y0))
((*l_rates) * (OPJ_FLOAT32)l_bits_empty) / ((*l_rates) * (OPJ_FLOAT32)l_bits_empty))
)
-
l_offset;
}
++l_rates;
for (k = 1; k < l_tcp->numlayers; ++k) {
if (*l_rates > 0.0f) {
*l_rates = (((OPJ_FLOAT32)(l_size_pixel * (OPJ_UINT32)(l_x1 - l_x0) *
(OPJ_UINT32)(l_y1 - l_y0)))
/
((*l_rates) * (OPJ_FLOAT32)l_bits_empty)
)
- -
l_offset; l_offset;
} }
@ -5325,12 +5312,11 @@ static OPJ_BOOL opj_j2k_update_rates(opj_j2k_t *p_j2k,
l_tile_size = 0; l_tile_size = 0;
for (i = 0; i < l_image->numcomps; ++i) { for (i = 0; i < l_image->numcomps; ++i) {
l_tile_size += (opj_uint_ceildiv(l_cp->tdx, l_img_comp->dx) l_tile_size += (OPJ_UINT64)opj_uint_ceildiv(l_cp->tdx, l_img_comp->dx)
* *
opj_uint_ceildiv(l_cp->tdy, l_img_comp->dy) opj_uint_ceildiv(l_cp->tdy, l_img_comp->dy)
* *
l_img_comp->prec l_img_comp->prec;
);
++l_img_comp; ++l_img_comp;
} }
@ -5341,7 +5327,7 @@ static OPJ_BOOL opj_j2k_update_rates(opj_j2k_t *p_j2k,
/* bin/test_tile_encoder 1 256 256 32 32 8 0 reversible_with_precinct.j2k 4 4 3 0 0 1 16 16 */ /* bin/test_tile_encoder 1 256 256 32 32 8 0 reversible_with_precinct.j2k 4 4 3 0 0 1 16 16 */
/* TODO revise this to take into account the overhead linked to the */ /* TODO revise this to take into account the overhead linked to the */
/* number of packets and number of code blocks in packets */ /* number of packets and number of code blocks in packets */
l_tile_size = (OPJ_UINT32)(l_tile_size * 1.4 / 8); l_tile_size = (OPJ_UINT64)((double)l_tile_size * 1.4 / 8);
/* Arbitrary amount to make the following work: */ /* Arbitrary amount to make the following work: */
/* bin/test_tile_encoder 1 256 256 17 16 8 0 reversible_no_precinct.j2k 4 4 3 0 0 1 */ /* bin/test_tile_encoder 1 256 256 17 16 8 0 reversible_no_precinct.j2k 4 4 3 0 0 1 */
@ -5349,10 +5335,17 @@ static OPJ_BOOL opj_j2k_update_rates(opj_j2k_t *p_j2k,
l_tile_size += opj_j2k_get_specific_header_sizes(p_j2k); l_tile_size += opj_j2k_get_specific_header_sizes(p_j2k);
p_j2k->m_specific_param.m_encoder.m_encoded_tile_size = l_tile_size; if (l_tile_size > UINT_MAX) {
l_tile_size = UINT_MAX;
}
p_j2k->m_specific_param.m_encoder.m_encoded_tile_size = (OPJ_UINT32)l_tile_size;
p_j2k->m_specific_param.m_encoder.m_encoded_tile_data = p_j2k->m_specific_param.m_encoder.m_encoded_tile_data =
(OPJ_BYTE *) opj_malloc(p_j2k->m_specific_param.m_encoder.m_encoded_tile_size); (OPJ_BYTE *) opj_malloc(p_j2k->m_specific_param.m_encoder.m_encoded_tile_size);
if (p_j2k->m_specific_param.m_encoder.m_encoded_tile_data == 00) { if (p_j2k->m_specific_param.m_encoder.m_encoded_tile_data == 00) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to allocate m_encoded_tile_data. %u MB required\n",
(OPJ_UINT32)(l_tile_size / 1024 / 1024));
return OPJ_FALSE; return OPJ_FALSE;
} }