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Refactor opj_j2k_read_ppt 

Update uclouvain/openjpeg#470
Update uclouvain/openjpeg#532
This commit is contained in:
mayeut 2015-07-12 15:55:58 +02:00
parent 5e1474cc92
commit d1b053afe2
2 changed files with 204 additions and 114 deletions
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138
src/lib/openjp2/j2k.c
View File

@ -753,6 +753,17 @@ static OPJ_BOOL opj_j2k_read_ppt ( opj_j2k_t *p_j2k,
OPJ_BYTE * p_header_data, OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size, OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager ); opj_event_mgr_t * p_manager );
/**
* Merges all PPT markers read (Packed packet headers, tile-part header)
*
* @param p_tcp the tile.
* @param p_manager the user event manager.
*/
static OPJ_BOOL opj_j2k_merge_ppt ( opj_tcp_t *p_tcp,
opj_event_mgr_t * p_manager );
/** /**
* Writes the TLM marker (Tile Length Marker) * Writes the TLM marker (Tile Length Marker)
* *
@ -3885,8 +3896,8 @@ static OPJ_BOOL opj_j2k_read_ppt ( opj_j2k_t *p_j2k,
assert(p_j2k != 00); assert(p_j2k != 00);
assert(p_manager != 00); assert(p_manager != 00);
/* We need to have the Z_ppt element at minimum */ /* We need to have the Z_ppt element + 1 byte of Ippt at minimum */
if (p_header_size < 1) { if (p_header_size < 2) {
opj_event_msg(p_manager, EVT_ERROR, "Error reading PPT marker\n"); opj_event_msg(p_manager, EVT_ERROR, "Error reading PPT marker\n");
return OPJ_FALSE; return OPJ_FALSE;
} }
@ -3904,45 +3915,95 @@ static OPJ_BOOL opj_j2k_read_ppt ( opj_j2k_t *p_j2k,
++p_header_data; ++p_header_data;
--p_header_size; --p_header_size;
/* Allocate buffer to read the packet header */ /* check allocation needed */
if (l_Z_ppt == 0) { if (l_tcp->ppt_markers == NULL) { /* first PPT marker */
/* First PPT marker */ OPJ_UINT32 l_newCount = l_Z_ppt + 1U; /* can't overflow, l_Z_ppt is UINT8 */
l_tcp->ppt_data_size = 0; assert(l_tcp->ppt_markers_count == 0U);
l_tcp->ppt_len = p_header_size;
opj_free(l_tcp->ppt_buffer); l_tcp->ppt_markers = (opj_ppt *) opj_calloc(l_newCount, sizeof(opj_ppt));
l_tcp->ppt_buffer = (OPJ_BYTE *) opj_calloc(l_tcp->ppt_len, sizeof(OPJ_BYTE) ); if (l_tcp->ppt_markers == NULL) {
if (l_tcp->ppt_buffer == 00) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n"); opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n");
return OPJ_FALSE; return OPJ_FALSE;
} }
l_tcp->ppt_data = l_tcp->ppt_buffer; l_tcp->ppt_markers_count = l_newCount;
} else if (l_tcp->ppt_markers_count <= l_Z_ppt) {
/* memset(l_tcp->ppt_buffer,0,l_tcp->ppt_len); */ OPJ_UINT32 l_newCount = l_Z_ppt + 1U; /* can't overflow, l_Z_ppt is UINT8 */
} opj_ppt *new_ppt_markers;
else { new_ppt_markers = (opj_ppt *) opj_realloc(l_tcp->ppt_markers, l_newCount * sizeof(opj_ppt));
OPJ_BYTE *new_ppt_buffer; if (new_ppt_markers == NULL) {
l_tcp->ppt_len += p_header_size; /* clean up to be done on l_tcp destruction */
new_ppt_buffer = (OPJ_BYTE *) opj_realloc(l_tcp->ppt_buffer, l_tcp->ppt_len);
if (! new_ppt_buffer) {
opj_free(l_tcp->ppt_buffer);
l_tcp->ppt_buffer = NULL;
l_tcp->ppt_len = 0;
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n"); opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n");
return OPJ_FALSE; return OPJ_FALSE;
} }
l_tcp->ppt_buffer = new_ppt_buffer; l_tcp->ppt_markers = new_ppt_markers;
l_tcp->ppt_data = l_tcp->ppt_buffer; memset(l_tcp->ppt_markers + l_tcp->ppt_markers_count, 0, (l_newCount - l_tcp->ppt_markers_count) * sizeof(opj_ppt));
l_tcp->ppt_markers_count = l_newCount;
memset(l_tcp->ppt_buffer+l_tcp->ppt_data_size,0,p_header_size);
} }
/* Read packet header from buffer */ if (l_tcp->ppt_markers[l_Z_ppt].m_data != NULL) {
memcpy(l_tcp->ppt_buffer+l_tcp->ppt_data_size,p_header_data,p_header_size); /* clean up to be done on l_tcp destruction */
opj_event_msg(p_manager, EVT_ERROR, "Zppt %u already read\n", l_Z_ppt);
return OPJ_FALSE;
}
l_tcp->ppt_data_size += p_header_size; l_tcp->ppt_markers[l_Z_ppt].m_data = opj_malloc(p_header_size);
if (l_tcp->ppt_markers[l_Z_ppt].m_data == NULL) {
/* clean up to be done on l_tcp destruction */
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n");
return OPJ_FALSE;
}
l_tcp->ppt_markers[l_Z_ppt].m_data_size = p_header_size;
memcpy(l_tcp->ppt_markers[l_Z_ppt].m_data, p_header_data, p_header_size);
return OPJ_TRUE;
}
/**
* Merges all PPT markers read (Packed packet headers, tile-part header)
*
* @param p_tcp the tile.
* @param p_manager the user event manager.
*/
static OPJ_BOOL opj_j2k_merge_ppt(opj_tcp_t *p_tcp, opj_event_mgr_t * p_manager)
{
OPJ_UINT32 i, l_ppt_data_size;
/* preconditions */
assert(p_tcp != 00);
assert(p_manager != 00);
assert(p_tcp->ppt_buffer == NULL);
if (p_tcp->ppt == 0U) {
return OPJ_TRUE;
}
l_ppt_data_size = 0U;
for (i = 0U; i < p_tcp->ppt_markers_count; ++i) {
l_ppt_data_size += p_tcp->ppt_markers[i].m_data_size; /* can't overflow, max 256 markers of max 65536 bytes */
}
p_tcp->ppt_buffer = (OPJ_BYTE *) opj_malloc(l_ppt_data_size);
if (p_tcp->ppt_buffer == 00) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n");
return OPJ_FALSE;
}
p_tcp->ppt_len = l_ppt_data_size;
l_ppt_data_size = 0U;
for (i = 0U; i < p_tcp->ppt_markers_count; ++i) {
if (p_tcp->ppt_markers[i].m_data != NULL) { /* standard doesn't seem to require contiguous Zppt */
memcpy(p_tcp->ppt_buffer + l_ppt_data_size, p_tcp->ppt_markers[i].m_data, p_tcp->ppt_markers[i].m_data_size);
l_ppt_data_size += p_tcp->ppt_markers[i].m_data_size; /* can't overflow, max 256 markers of max 65536 bytes */
opj_free(p_tcp->ppt_markers[i].m_data);
p_tcp->ppt_markers[i].m_data = NULL;
p_tcp->ppt_markers[i].m_data_size = 0U;
}
}
p_tcp->ppt_markers_count = 0U;
opj_free(p_tcp->ppt_markers);
p_tcp->ppt_markers = NULL;
p_tcp->ppt_data = p_tcp->ppt_buffer;
p_tcp->ppt_data_size = p_tcp->ppt_len;
return OPJ_TRUE; return OPJ_TRUE;
} }
@ -7627,6 +7688,18 @@ void opj_j2k_tcp_destroy (opj_tcp_t *p_tcp)
return; return;
} }
if (p_tcp->ppt_markers != 00) {
OPJ_UINT32 i;
for (i = 0U; i < p_tcp->ppt_markers_count; ++i) {
if (p_tcp->ppt_markers[i].m_data != NULL) {
opj_free(p_tcp->ppt_markers[i].m_data);
}
}
p_tcp->ppt_markers_count = 0U;
opj_free(p_tcp->ppt_markers);
p_tcp->ppt_markers = NULL;
}
if (p_tcp->ppt_buffer != 00) { if (p_tcp->ppt_buffer != 00) {
opj_free(p_tcp->ppt_buffer); opj_free(p_tcp->ppt_buffer);
p_tcp->ppt_buffer = 00; p_tcp->ppt_buffer = 00;
@ -8112,6 +8185,11 @@ OPJ_BOOL opj_j2k_decode_tile ( opj_j2k_t * p_j2k,
return OPJ_FALSE; return OPJ_FALSE;
} }
if (! opj_j2k_merge_ppt(l_tcp, p_manager)) {
opj_j2k_tcp_destroy(l_tcp);
return OPJ_FALSE;
}
if (! opj_tcd_decode_tile( p_j2k->m_tcd, if (! opj_tcd_decode_tile( p_j2k->m_tcd,
l_tcp->m_data, l_tcp->m_data,
l_tcp->m_data_size, l_tcp->m_data_size,

12
src/lib/openjp2/j2k.h
View File

@ -232,6 +232,12 @@ typedef struct opj_simple_mcc_decorrelation_data
} }
opj_simple_mcc_decorrelation_data_t; opj_simple_mcc_decorrelation_data_t;
typedef struct opj_ppt_struct
{
OPJ_BYTE* m_data; /* m_data == NULL => Zppt not read yet */
OPJ_UINT32 m_data_size;
} opj_ppt;
/** /**
Tile coding parameters : Tile coding parameters :
this structure is used to store coding/decoding parameters common to all this structure is used to store coding/decoding parameters common to all
@ -254,6 +260,12 @@ typedef struct opj_tcp
OPJ_UINT32 numpocs; OPJ_UINT32 numpocs;
/** progression order changes */ /** progression order changes */
opj_poc_t pocs[32]; opj_poc_t pocs[32];
/** number of ppt markers (reserved size) */
OPJ_UINT32 ppt_markers_count;
/** ppt markers data (table indexed by Zppm) */
opj_ppt* ppt_markers;
/** packet header store there for futur use in t2_decode_packet */ /** packet header store there for futur use in t2_decode_packet */
OPJ_BYTE *ppt_data; OPJ_BYTE *ppt_data;
/** used to keep a track of the allocated memory */ /** used to keep a track of the allocated memory */