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Refactor opj_j2k_read_ppt
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Update #470
Update #532
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@mayeut
mayeut committed Jul 12, 2015
1 parent 5e1474c commit d1b053a
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Showing 2 changed files with 204 additions and 114 deletions.
306 changes: 192 additions & 114 deletions src/lib/openjp2/j2k.c
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Expand Up @@ -753,6 +753,17 @@ static OPJ_BOOL opj_j2k_read_ppt ( opj_j2k_t *p_j2k,
OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size,
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)
*
Expand Down Expand Up @@ -3876,74 +3887,124 @@ static OPJ_BOOL opj_j2k_read_ppt ( opj_j2k_t *p_j2k,
opj_event_mgr_t * p_manager
)
{
opj_cp_t *l_cp = 00;
opj_tcp_t *l_tcp = 00;
OPJ_UINT32 l_Z_ppt;

/* preconditions */
assert(p_header_data != 00);
assert(p_j2k != 00);
assert(p_manager != 00);
opj_cp_t *l_cp = 00;
opj_tcp_t *l_tcp = 00;
OPJ_UINT32 l_Z_ppt;

/* We need to have the Z_ppt element at minimum */
if (p_header_size < 1) {
opj_event_msg(p_manager, EVT_ERROR, "Error reading PPT marker\n");
return OPJ_FALSE;
}

l_cp = &(p_j2k->m_cp);
if (l_cp->ppm){
opj_event_msg(p_manager, EVT_ERROR, "Error reading PPT marker: packet header have been previously found in the main header (PPM marker).\n");
return OPJ_FALSE;
}

l_tcp = &(l_cp->tcps[p_j2k->m_current_tile_number]);
l_tcp->ppt = 1;

opj_read_bytes(p_header_data,&l_Z_ppt,1); /* Z_ppt */
++p_header_data;
--p_header_size;

/* Allocate buffer to read the packet header */
if (l_Z_ppt == 0) {
/* First PPT marker */
l_tcp->ppt_data_size = 0;
l_tcp->ppt_len = p_header_size;

opj_free(l_tcp->ppt_buffer);
l_tcp->ppt_buffer = (OPJ_BYTE *) opj_calloc(l_tcp->ppt_len, sizeof(OPJ_BYTE) );
if (l_tcp->ppt_buffer == 00) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n");
return OPJ_FALSE;
}
l_tcp->ppt_data = l_tcp->ppt_buffer;
/* preconditions */
assert(p_header_data != 00);
assert(p_j2k != 00);
assert(p_manager != 00);

/* memset(l_tcp->ppt_buffer,0,l_tcp->ppt_len); */
}
else {
OPJ_BYTE *new_ppt_buffer;
l_tcp->ppt_len += p_header_size;

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");
return OPJ_FALSE;
}
l_tcp->ppt_buffer = new_ppt_buffer;
l_tcp->ppt_data = l_tcp->ppt_buffer;
/* We need to have the Z_ppt element + 1 byte of Ippt at minimum */
if (p_header_size < 2) {
opj_event_msg(p_manager, EVT_ERROR, "Error reading PPT marker\n");
return OPJ_FALSE;
}

memset(l_tcp->ppt_buffer+l_tcp->ppt_data_size,0,p_header_size);
}
l_cp = &(p_j2k->m_cp);
if (l_cp->ppm){
opj_event_msg(p_manager, EVT_ERROR, "Error reading PPT marker: packet header have been previously found in the main header (PPM marker).\n");
return OPJ_FALSE;
}

/* Read packet header from buffer */
memcpy(l_tcp->ppt_buffer+l_tcp->ppt_data_size,p_header_data,p_header_size);
l_tcp = &(l_cp->tcps[p_j2k->m_current_tile_number]);
l_tcp->ppt = 1;

l_tcp->ppt_data_size += p_header_size;
opj_read_bytes(p_header_data,&l_Z_ppt,1); /* Z_ppt */
++p_header_data;
--p_header_size;

/* check allocation needed */
if (l_tcp->ppt_markers == NULL) { /* first PPT marker */
OPJ_UINT32 l_newCount = l_Z_ppt + 1U; /* can't overflow, l_Z_ppt is UINT8 */
assert(l_tcp->ppt_markers_count == 0U);

l_tcp->ppt_markers = (opj_ppt *) opj_calloc(l_newCount, sizeof(opj_ppt));
if (l_tcp->ppt_markers == NULL) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to read PPT marker\n");
return OPJ_FALSE;
}
l_tcp->ppt_markers_count = l_newCount;
} else if (l_tcp->ppt_markers_count <= l_Z_ppt) {
OPJ_UINT32 l_newCount = l_Z_ppt + 1U; /* can't overflow, l_Z_ppt is UINT8 */
opj_ppt *new_ppt_markers;
new_ppt_markers = (opj_ppt *) opj_realloc(l_tcp->ppt_markers, l_newCount * sizeof(opj_ppt));
if (new_ppt_markers == 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 = new_ppt_markers;
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;
}

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, "Zppt %u already read\n", l_Z_ppt);
return OPJ_FALSE;
}

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;
}

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;
}

OPJ_BOOL opj_j2k_write_tlm( opj_j2k_t *p_j2k,
Expand Down Expand Up @@ -7623,60 +7684,72 @@ void j2k_destroy_cstr_index (opj_codestream_index_t *p_cstr_ind)

void opj_j2k_tcp_destroy (opj_tcp_t *p_tcp)
{
if (p_tcp == 00) {
return;
}

if (p_tcp->ppt_buffer != 00) {
opj_free(p_tcp->ppt_buffer);
p_tcp->ppt_buffer = 00;
}

if (p_tcp->tccps != 00) {
opj_free(p_tcp->tccps);
p_tcp->tccps = 00;
}

if (p_tcp->m_mct_coding_matrix != 00) {
opj_free(p_tcp->m_mct_coding_matrix);
p_tcp->m_mct_coding_matrix = 00;
}

if (p_tcp->m_mct_decoding_matrix != 00) {
opj_free(p_tcp->m_mct_decoding_matrix);
p_tcp->m_mct_decoding_matrix = 00;
}

if (p_tcp->m_mcc_records) {
opj_free(p_tcp->m_mcc_records);
p_tcp->m_mcc_records = 00;
p_tcp->m_nb_max_mcc_records = 0;
p_tcp->m_nb_mcc_records = 0;
}

if (p_tcp->m_mct_records) {
opj_mct_data_t * l_mct_data = p_tcp->m_mct_records;
OPJ_UINT32 i;

for (i=0;i<p_tcp->m_nb_mct_records;++i) {
if (l_mct_data->m_data) {
opj_free(l_mct_data->m_data);
l_mct_data->m_data = 00;
}

++l_mct_data;
}

opj_free(p_tcp->m_mct_records);
p_tcp->m_mct_records = 00;
}
if (p_tcp == 00) {
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) {
opj_free(p_tcp->ppt_buffer);
p_tcp->ppt_buffer = 00;
}

if (p_tcp->tccps != 00) {
opj_free(p_tcp->tccps);
p_tcp->tccps = 00;
}

if (p_tcp->m_mct_coding_matrix != 00) {
opj_free(p_tcp->m_mct_coding_matrix);
p_tcp->m_mct_coding_matrix = 00;
}

if (p_tcp->m_mct_decoding_matrix != 00) {
opj_free(p_tcp->m_mct_decoding_matrix);
p_tcp->m_mct_decoding_matrix = 00;
}

if (p_tcp->m_mcc_records) {
opj_free(p_tcp->m_mcc_records);
p_tcp->m_mcc_records = 00;
p_tcp->m_nb_max_mcc_records = 0;
p_tcp->m_nb_mcc_records = 0;
}

if (p_tcp->m_mct_records) {
opj_mct_data_t * l_mct_data = p_tcp->m_mct_records;
OPJ_UINT32 i;

for (i=0;i<p_tcp->m_nb_mct_records;++i) {
if (l_mct_data->m_data) {
opj_free(l_mct_data->m_data);
l_mct_data->m_data = 00;
}

++l_mct_data;
}

opj_free(p_tcp->m_mct_records);
p_tcp->m_mct_records = 00;
}

if (p_tcp->mct_norms != 00) {
opj_free(p_tcp->mct_norms);
p_tcp->mct_norms = 00;
}
if (p_tcp->mct_norms != 00) {
opj_free(p_tcp->mct_norms);
p_tcp->mct_norms = 00;
}

opj_j2k_tcp_data_destroy(p_tcp);
opj_j2k_tcp_data_destroy(p_tcp);

}

Expand Down Expand Up @@ -8111,6 +8184,11 @@ OPJ_BOOL opj_j2k_decode_tile ( opj_j2k_t * p_j2k,
opj_j2k_tcp_destroy(l_tcp);
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,
l_tcp->m_data,
Expand Down
12 changes: 12 additions & 0 deletions src/lib/openjp2/j2k.h
View file
Expand Up @@ -232,6 +232,12 @@ typedef struct opj_simple_mcc_decorrelation_data
}
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 :
this structure is used to store coding/decoding parameters common to all
Expand All @@ -254,6 +260,12 @@ typedef struct opj_tcp
OPJ_UINT32 numpocs;
/** progression order changes */
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 */
OPJ_BYTE *ppt_data;
/** used to keep a track of the allocated memory */
Expand Down

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