opj_jp2_read_header(): move setting color_space here instead in opj_jp2_decode()/get_tile() (fixes #570)

1 files changed, 47 insertions, 81 deletions

diff --git a/src/lib/openjp2/jp2.c b/src/lib/openjp2/jp2.c
index ec202272..25f379af 100644
--- a/src/lib/openjp2/jp2.c
+++ b/src/lib/openjp2/jp2.c
@@ -1594,22 +1594,10 @@ static OPJ_BOOL opj_jp2_read_colr(opj_jp2_t *jp2,
     return OPJ_TRUE;
 }
 
-OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2,
-                        opj_stream_private_t *p_stream,
-                        opj_image_t* p_image,
-                        opj_event_mgr_t * p_manager)
+static OPJ_BOOL opj_jp2_apply_color_postprocessing(opj_jp2_t *jp2,
+        opj_image_t* p_image,
+        opj_event_mgr_t * p_manager)
 {
-    if (!p_image) {
-        return OPJ_FALSE;
-    }
-
-    /* J2K decoding */
-    if (! opj_j2k_decode(jp2->j2k, p_stream, p_image, p_manager)) {
-        opj_event_msg(p_manager, EVT_ERROR,
-                      "Failed to decode the codestream in the JP2 file\n");
-        return OPJ_FALSE;
-    }
-
     if (jp2->j2k->m_specific_param.m_decoder.m_numcomps_to_decode) {
         /* Bypass all JP2 component transforms */
         return OPJ_TRUE;
@@ -1620,21 +1608,6 @@ OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2,
             return OPJ_FALSE;
         }
 
-        /* Set Image Color Space */
-        if (jp2->enumcs == 16) {
-            p_image->color_space = OPJ_CLRSPC_SRGB;
-        } else if (jp2->enumcs == 17) {
-            p_image->color_space = OPJ_CLRSPC_GRAY;
-        } else if (jp2->enumcs == 18) {
-            p_image->color_space = OPJ_CLRSPC_SYCC;
-        } else if (jp2->enumcs == 24) {
-            p_image->color_space = OPJ_CLRSPC_EYCC;
-        } else if (jp2->enumcs == 12) {
-            p_image->color_space = OPJ_CLRSPC_CMYK;
-        } else {
-            p_image->color_space = OPJ_CLRSPC_UNKNOWN;
-        }
-
         if (jp2->color.jp2_pclr) {
             /* Part 1, I.5.3.4: Either both or none : */
             if (!jp2->color.jp2_pclr->cmap) {
@@ -1661,6 +1634,25 @@ OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2,
     return OPJ_TRUE;
 }
 
+OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2,
+                        opj_stream_private_t *p_stream,
+                        opj_image_t* p_image,
+                        opj_event_mgr_t * p_manager)
+{
+    if (!p_image) {
+        return OPJ_FALSE;
+    }
+
+    /* J2K decoding */
+    if (! opj_j2k_decode(jp2->j2k, p_stream, p_image, p_manager)) {
+        opj_event_msg(p_manager, EVT_ERROR,
+                      "Failed to decode the codestream in the JP2 file\n");
+        return OPJ_FALSE;
+    }
+
+    return opj_jp2_apply_color_postprocessing(jp2, p_image, p_manager);
+}
+
 static OPJ_BOOL opj_jp2_write_jp2h(opj_jp2_t *jp2,
                                    opj_stream_private_t *stream,
                                    opj_event_mgr_t * p_manager
@@ -2843,6 +2835,8 @@ OPJ_BOOL opj_jp2_read_header(opj_stream_private_t *p_stream,
                              opj_event_mgr_t * p_manager
                             )
 {
+    int ret;
+
     /* preconditions */
     assert(jp2 != 00);
     assert(p_stream != 00);
@@ -2876,10 +2870,28 @@ OPJ_BOOL opj_jp2_read_header(opj_stream_private_t *p_stream,
         return OPJ_FALSE;
     }
 
-    return opj_j2k_read_header(p_stream,
-                               jp2->j2k,
-                               p_image,
-                               p_manager);
+    ret = opj_j2k_read_header(p_stream,
+                              jp2->j2k,
+                              p_image,
+                              p_manager);
+
+    if (p_image && *p_image) {
+        /* Set Image Color Space */
+        if (jp2->enumcs == 16) {
+            (*p_image)->color_space = OPJ_CLRSPC_SRGB;
+        } else if (jp2->enumcs == 17) {
+            (*p_image)->color_space = OPJ_CLRSPC_GRAY;
+        } else if (jp2->enumcs == 18) {
+            (*p_image)->color_space = OPJ_CLRSPC_SYCC;
+        } else if (jp2->enumcs == 24) {
+            (*p_image)->color_space = OPJ_CLRSPC_EYCC;
+        } else if (jp2->enumcs == 12) {
+            (*p_image)->color_space = OPJ_CLRSPC_CMYK;
+        } else {
+            (*p_image)->color_space = OPJ_CLRSPC_UNKNOWN;
+        }
+    }
+    return ret;
 }
 
 static OPJ_BOOL opj_jp2_setup_encoding_validation(opj_jp2_t *jp2,
@@ -3123,53 +3135,7 @@ OPJ_BOOL opj_jp2_get_tile(opj_jp2_t *p_jp2,
         return OPJ_FALSE;
     }
 
-    if (p_jp2->j2k->m_specific_param.m_decoder.m_numcomps_to_decode) {
-        /* Bypass all JP2 component transforms */
-        return OPJ_TRUE;
-    }
-
-    if (!opj_jp2_check_color(p_image, &(p_jp2->color), p_manager)) {
-        return OPJ_FALSE;
-    }
-
-    /* Set Image Color Space */
-    if (p_jp2->enumcs == 16) {
-        p_image->color_space = OPJ_CLRSPC_SRGB;
-    } else if (p_jp2->enumcs == 17) {
-        p_image->color_space = OPJ_CLRSPC_GRAY;
-    } else if (p_jp2->enumcs == 18) {
-        p_image->color_space = OPJ_CLRSPC_SYCC;
-    } else if (p_jp2->enumcs == 24) {
-        p_image->color_space = OPJ_CLRSPC_EYCC;
-    } else if (p_jp2->enumcs == 12) {
-        p_image->color_space = OPJ_CLRSPC_CMYK;
-    } else {
-        p_image->color_space = OPJ_CLRSPC_UNKNOWN;
-    }
-
-    if (p_jp2->color.jp2_pclr) {
-        /* Part 1, I.5.3.4: Either both or none : */
-        if (!p_jp2->color.jp2_pclr->cmap) {
-            opj_jp2_free_pclr(&(p_jp2->color));
-        } else {
-            if (!opj_jp2_apply_pclr(p_image, &(p_jp2->color), p_manager)) {
-                return OPJ_FALSE;
-            }
-        }
-    }
-
-    /* Apply the color space if needed */
-    if (p_jp2->color.jp2_cdef) {
-        opj_jp2_apply_cdef(p_image, &(p_jp2->color), p_manager);
-    }
-
-    if (p_jp2->color.icc_profile_buf) {
-        p_image->icc_profile_buf = p_jp2->color.icc_profile_buf;
-        p_image->icc_profile_len = p_jp2->color.icc_profile_len;
-        p_jp2->color.icc_profile_buf = NULL;
-    }
-
-    return OPJ_TRUE;
+    return opj_jp2_apply_color_postprocessing(p_jp2, p_image, p_manager);
 }
 
 /* ----------------------------------------------------------------------- */