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Diffstat (limited to 'src/lib/openjp2/j2k.c')
-rw-r--r--src/lib/openjp2/j2k.c166
1 files changed, 133 insertions, 33 deletions
diff --git a/src/lib/openjp2/j2k.c b/src/lib/openjp2/j2k.c
index 75d4f0ce..ad6e1b86 100644
--- a/src/lib/openjp2/j2k.c
+++ b/src/lib/openjp2/j2k.c
@@ -8280,6 +8280,11 @@ void opj_j2k_destroy(opj_j2k_t *p_j2k)
p_j2k->m_specific_param.m_decoder.m_header_data = 00;
p_j2k->m_specific_param.m_decoder.m_header_data_size = 0;
}
+
+ opj_free(p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode);
+ p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode = 00;
+ p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode = 0;
+
} else {
if (p_j2k->m_specific_param.m_encoder.m_encoded_tile_data) {
@@ -8928,6 +8933,8 @@ OPJ_BOOL opj_j2k_decode_tile(opj_j2k_t * p_j2k,
l_image_for_bounds->y0,
l_image_for_bounds->x1,
l_image_for_bounds->y1,
+ p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode,
+ p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode,
l_tcp->m_data,
l_tcp->m_data_size,
p_tile_index,
@@ -9042,6 +9049,11 @@ static OPJ_BOOL opj_j2k_update_image_data(opj_tcd_t * p_tcd,
p_src_data = l_tilec->data_win;
}
+ if (p_src_data == NULL) {
+ /* Happens for partial component decoding */
+ continue;
+ }
+
l_width_src = (OPJ_UINT32)(res_x1 - res_x0);
l_height_src = (OPJ_UINT32)(res_y1 - res_y0);
@@ -9242,6 +9254,65 @@ static OPJ_BOOL opj_j2k_update_image_dimensions(opj_image_t* p_image,
return OPJ_TRUE;
}
+OPJ_BOOL opj_j2k_set_decoded_components(opj_j2k_t *p_j2k,
+ OPJ_UINT32 numcomps,
+ const OPJ_UINT32* comps_indices,
+ opj_event_mgr_t * p_manager)
+{
+ OPJ_UINT32 i;
+ OPJ_BOOL* already_mapped;
+
+ if (p_j2k->m_private_image == NULL) {
+ opj_event_msg(p_manager, EVT_ERROR,
+ "opj_read_header() should be called before "
+ "opj_set_decoded_components().\n");
+ return OPJ_FALSE;
+ }
+
+ already_mapped = (OPJ_BOOL*) opj_calloc(sizeof(OPJ_BOOL),
+ p_j2k->m_private_image->numcomps);
+ if (already_mapped == NULL) {
+ return OPJ_FALSE;
+ }
+
+ for (i = 0; i < numcomps; i++) {
+ if (comps_indices[i] >= p_j2k->m_private_image->numcomps) {
+ opj_event_msg(p_manager, EVT_ERROR,
+ "Invalid component index: %u\n",
+ comps_indices[i]);
+ opj_free(already_mapped);
+ return OPJ_FALSE;
+ }
+ if (already_mapped[comps_indices[i]]) {
+ opj_event_msg(p_manager, EVT_ERROR,
+ "Component index %u used several times\n",
+ comps_indices[i]);
+ opj_free(already_mapped);
+ return OPJ_FALSE;
+ }
+ already_mapped[comps_indices[i]] = OPJ_TRUE;
+ }
+ opj_free(already_mapped);
+
+ opj_free(p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode);
+ if (numcomps) {
+ p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode =
+ (OPJ_UINT32*) opj_malloc(numcomps * sizeof(OPJ_UINT32));
+ if (p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode == NULL) {
+ p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode = 0;
+ return OPJ_FALSE;
+ }
+ memcpy(p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode,
+ comps_indices,
+ numcomps * sizeof(OPJ_UINT32));
+ } else {
+ p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode = NULL;
+ }
+ p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode = numcomps;
+
+ return OPJ_TRUE;
+}
+
OPJ_BOOL opj_j2k_set_decode_area(opj_j2k_t *p_j2k,
opj_image_t* p_image,
@@ -10831,13 +10902,71 @@ static OPJ_BOOL opj_j2k_setup_decoding_tile(opj_j2k_t *p_j2k,
return OPJ_TRUE;
}
+static OPJ_BOOL opj_j2k_move_data_from_codec_to_output_image(opj_j2k_t * p_j2k,
+ opj_image_t * p_image)
+{
+ OPJ_UINT32 compno;
+
+ /* Move data and copy one information from codec to output image*/
+ if (p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode > 0) {
+ opj_image_comp_t* newcomps =
+ (opj_image_comp_t*) opj_malloc(
+ p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode *
+ sizeof(opj_image_comp_t));
+ if (newcomps == NULL) {
+ opj_image_destroy(p_j2k->m_private_image);
+ p_j2k->m_private_image = NULL;
+ return OPJ_FALSE;
+ }
+ for (compno = 0; compno < p_image->numcomps; compno++) {
+ opj_image_data_free(p_image->comps[compno].data);
+ p_image->comps[compno].data = NULL;
+ }
+ for (compno = 0;
+ compno < p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode; compno++) {
+ OPJ_UINT32 src_compno =
+ p_j2k->m_specific_param.m_decoder.m_comps_indices_to_decode[compno];
+ memcpy(&(newcomps[compno]),
+ &(p_j2k->m_output_image->comps[src_compno]),
+ sizeof(opj_image_comp_t));
+ newcomps[compno].resno_decoded =
+ p_j2k->m_output_image->comps[src_compno].resno_decoded;
+ newcomps[compno].data = p_j2k->m_output_image->comps[src_compno].data;
+ p_j2k->m_output_image->comps[src_compno].data = NULL;
+ }
+ for (compno = 0; compno < p_image->numcomps; compno++) {
+ assert(p_j2k->m_output_image->comps[compno].data == NULL);
+ opj_image_data_free(p_j2k->m_output_image->comps[compno].data);
+ p_j2k->m_output_image->comps[compno].data = NULL;
+ }
+ p_image->numcomps = p_j2k->m_specific_param.m_decoder.m_numcomps_to_decode;
+ opj_free(p_image->comps);
+ p_image->comps = newcomps;
+ } else {
+ for (compno = 0; compno < p_image->numcomps; compno++) {
+ p_image->comps[compno].resno_decoded =
+ p_j2k->m_output_image->comps[compno].resno_decoded;
+ opj_image_data_free(p_image->comps[compno].data);
+ p_image->comps[compno].data = p_j2k->m_output_image->comps[compno].data;
+#if 0
+ char fn[256];
+ sprintf(fn, "/tmp/%d.raw", compno);
+ FILE *debug = fopen(fn, "wb");
+ fwrite(p_image->comps[compno].data, sizeof(OPJ_INT32),
+ p_image->comps[compno].w * p_image->comps[compno].h, debug);
+ fclose(debug);
+#endif
+ p_j2k->m_output_image->comps[compno].data = NULL;
+ }
+ }
+ return OPJ_TRUE;
+}
+
OPJ_BOOL opj_j2k_decode(opj_j2k_t * p_j2k,
opj_stream_private_t * p_stream,
opj_image_t * p_image,
opj_event_mgr_t * p_manager)
{
- OPJ_UINT32 compno;
-
if (!p_image) {
return OPJ_FALSE;
}
@@ -10888,23 +11017,7 @@ OPJ_BOOL opj_j2k_decode(opj_j2k_t * p_j2k,
}
/* Move data and copy one information from codec to output image*/
- for (compno = 0; compno < p_image->numcomps; compno++) {
- p_image->comps[compno].resno_decoded =
- p_j2k->m_output_image->comps[compno].resno_decoded;
- opj_image_data_free(p_image->comps[compno].data);
- p_image->comps[compno].data = p_j2k->m_output_image->comps[compno].data;
-#if 0
- char fn[256];
- sprintf(fn, "/tmp/%d.raw", compno);
- FILE *debug = fopen(fn, "wb");
- fwrite(p_image->comps[compno].data, sizeof(OPJ_INT32),
- p_image->comps[compno].w * p_image->comps[compno].h, debug);
- fclose(debug);
-#endif
- p_j2k->m_output_image->comps[compno].data = NULL;
- }
-
- return OPJ_TRUE;
+ return opj_j2k_move_data_from_codec_to_output_image(p_j2k, p_image);
}
OPJ_BOOL opj_j2k_get_tile(opj_j2k_t *p_j2k,
@@ -11019,20 +11132,7 @@ OPJ_BOOL opj_j2k_get_tile(opj_j2k_t *p_j2k,
}
/* Move data and copy one information from codec to output image*/
- for (compno = 0; compno < p_image->numcomps; compno++) {
- p_image->comps[compno].resno_decoded =
- p_j2k->m_output_image->comps[compno].resno_decoded;
-
- if (p_image->comps[compno].data) {
- opj_image_data_free(p_image->comps[compno].data);
- }
-
- p_image->comps[compno].data = p_j2k->m_output_image->comps[compno].data;
-
- p_j2k->m_output_image->comps[compno].data = NULL;
- }
-
- return OPJ_TRUE;
+ return opj_j2k_move_data_from_codec_to_output_image(p_j2k, p_image);
}
OPJ_BOOL opj_j2k_set_decoded_resolution_factor(opj_j2k_t *p_j2k,
generated by cgit v1.2.3 (git 2.46.0) at 2026-04-19 23:15:50 +0000