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src/java.base/share/native/libjli/splashscreen_stubs.c

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  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <stdio.h>
  27 #include "splashscreen.h"
  28 #include "jni.h"
  29 extern void* SplashProcAddress(const char* name); /* in java_md.c */
  30 
  31 /*
  32  * Prototypes of pointers to functions in splashscreen shared lib
  33  */
  34 typedef int (*SplashLoadMemory_t)(void* pdata, int size);
  35 typedef int (*SplashLoadFile_t)(const char* filename);
  36 typedef void (*SplashInit_t)(void);
  37 typedef void (*SplashClose_t)(void);
  38 typedef void (*SplashSetFileJarName_t)(const char* fileName,
  39                                        const char* jarName);
  40 typedef void (*SplashSetScaleFactor_t)(float scaleFactor);
  41 typedef jboolean (*SplashGetScaledImageName_t)(const char* fileName,
  42                         const char* jarName, float* scaleFactor,
  43                         char *scaleImageName, const size_t scaleImageNameLength);
  44 typedef int (*SplashGetScaledImgNameMaxPstfixLen_t)(const char* filename);
  45 
  46 /*
  47  * This macro invokes a function from the shared lib.
  48  * it locates a function with SplashProcAddress on demand.
  49  * if SplashProcAddress fails, def value is returned.
  50  *
  51  * it is further wrapped with INVOKEV (works with functions which return
  52  * void and INVOKE (for all other functions). INVOKEV looks a bit ugly,
  53  * that's due being unable to return a value of type void in C. INVOKEV
  54  * works around this by using semicolon instead of return operator.
  55  */
  56 #define _INVOKE(name,def,ret) \
  57     static void* proc = NULL; \
  58     if (!proc) { proc = SplashProcAddress(#name); } \
  59     if (!proc) { return def; } \
  60     ret ((name##_t)proc)
  61 
  62 #define INVOKE(name,def) _INVOKE(name,def,return)
  63 #define INVOKEV(name) _INVOKE(name, ,;)
  64 
  65 
  66 int     DoSplashLoadMemory(void* pdata, int size) {
  67     INVOKE(SplashLoadMemory, 0)(pdata, size);
  68 }
  69 
  70 int     DoSplashLoadFile(const char* filename) {
  71     INVOKE(SplashLoadFile, 0)(filename);
  72 }
  73 
  74 void    DoSplashInit(void) {
  75     INVOKEV(SplashInit)();
  76 }
  77 
  78 void    DoSplashClose(void) {
  79     INVOKEV(SplashClose)();
  80 }
  81 
  82 void    DoSplashSetFileJarName(const char* fileName, const char* jarName) {
  83     INVOKEV(SplashSetFileJarName)(fileName, jarName);
  84 }
  85 
  86 void    DoSplashSetScaleFactor(float scaleFactor) {
  87     INVOKEV(SplashSetScaleFactor)(scaleFactor);
  88 }
  89 
  90 jboolean DoSplashGetScaledImageName(const char* fileName, const char* jarName,
  91            float* scaleFactor, char *scaledImageName, const size_t scaledImageNameLength) {
  92         INVOKE(SplashGetScaledImageName, 0)(fileName, jarName, scaleFactor,
  93                                             scaledImageName, scaledImageNameLength);
  94 }
  95 


  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <stdio.h>
  27 #include "splashscreen.h"
  28 #include "jni.h"
  29 extern void* SplashProcAddress(const char* name); /* in java_md.c */
  30 
  31 /*
  32  * Prototypes of pointers to functions in splashscreen shared lib
  33  */
  34 typedef int (*SplashLoadMemory_t)(void* pdata, int size);
  35 typedef int (*SplashLoadFile_t)(const char* filename);
  36 typedef int (*SplashInit_t)(void);
  37 typedef void (*SplashClose_t)(void);
  38 typedef void (*SplashSetFileJarName_t)(const char* fileName,
  39                                        const char* jarName);
  40 typedef void (*SplashSetScaleFactor_t)(float scaleFactor);
  41 typedef jboolean (*SplashGetScaledImageName_t)(const char* fileName,
  42                         const char* jarName, float* scaleFactor,
  43                         char *scaleImageName, const size_t scaleImageNameLength);
  44 typedef int (*SplashGetScaledImgNameMaxPstfixLen_t)(const char* filename);
  45 
  46 /*
  47  * This macro invokes a function from the shared lib.
  48  * it locates a function with SplashProcAddress on demand.
  49  * if SplashProcAddress fails, def value is returned.
  50  *
  51  * it is further wrapped with INVOKEV (works with functions which return
  52  * void and INVOKE (for all other functions). INVOKEV looks a bit ugly,
  53  * that's due being unable to return a value of type void in C. INVOKEV
  54  * works around this by using semicolon instead of return operator.
  55  */
  56 #define _INVOKE(name,def,ret) \
  57     static void* proc = NULL; \
  58     if (!proc) { proc = SplashProcAddress(#name); } \
  59     if (!proc) { return def; } \
  60     ret ((name##_t)proc)
  61 
  62 #define INVOKE(name,def) _INVOKE(name,def,return)
  63 #define INVOKEV(name) _INVOKE(name, ,;)
  64 
  65 
  66 int     DoSplashLoadMemory(void* pdata, int size) {
  67     INVOKE(SplashLoadMemory, 0)(pdata, size);
  68 }
  69 
  70 int     DoSplashLoadFile(const char* filename) {
  71     INVOKE(SplashLoadFile, 0)(filename);
  72 }
  73 
  74 int     DoSplashInit(void) {
  75     INVOKE(SplashInit, 0)();
  76 }
  77 
  78 void    DoSplashClose(void) {
  79     INVOKEV(SplashClose)();
  80 }
  81 
  82 void    DoSplashSetFileJarName(const char* fileName, const char* jarName) {
  83     INVOKEV(SplashSetFileJarName)(fileName, jarName);
  84 }
  85 
  86 void    DoSplashSetScaleFactor(float scaleFactor) {
  87     INVOKEV(SplashSetScaleFactor)(scaleFactor);
  88 }
  89 
  90 jboolean DoSplashGetScaledImageName(const char* fileName, const char* jarName,
  91            float* scaleFactor, char *scaledImageName, const size_t scaledImageNameLength) {
  92         INVOKE(SplashGetScaledImageName, 0)(fileName, jarName, scaleFactor,
  93                                             scaledImageName, scaledImageNameLength);
  94 }
  95 
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