Add PDF loader (with some help from raster)

SVN revision: 59338

6 files changed, 377 insertions, 11 deletions

diff --git a/TODO b/TODO
new file mode 100644
index 0000000..f35cb33
--- /dev/null
+++ b/TODO
@@ -0,0 +1,9 @@
+
+Modules to add:
+---------------
+
+ [x] XCF
+ [x] PDF
+ [ ] PS
+ [ ] DVI
+ [ ] Djvu
diff --git a/configure.ac b/configure.ac
index a056f64..b7db8ea 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,11 +28,6 @@ AC_CONFIG_HEADERS([config.h])
 AM_INIT_AUTOMAKE([1.6 dist-bzip2])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
-AC_LIBTOOL_WIN32_DLL
-define([AC_LIBTOOL_LANG_CXX_CONFIG], [:])dnl
-define([AC_LIBTOOL_LANG_F77_CONFIG], [:])dnl
-AC_PROG_LIBTOOL
-
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 m4_ifdef([v_rev], , [m4_define([v_rev], [0])])
@@ -54,8 +49,10 @@ AC_SUBST(VMAJ)
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
-AC_C_BIGENDIAN
+
+### Checks for libraries
 AC_PROG_CC
+AC_PROG_CXX
 PKG_PROG_PKG_CONFIG
 
 ### Checks for libraries
@@ -63,14 +60,16 @@ PKG_PROG_PKG_CONFIG
 # Eina library
 PKG_CHECK_MODULES(EINA, [eina >= 1.0.0])
 
+PKG_CHECK_MODULES([POPPLER], [poppler >= 0.14], [have_poppler="yes"], [have_poppler="no"])
+
+AM_CONDITIONAL([HAVE_PDF], [test "x${have_poppler}" = "xyes"])
+
 ### Checks for header files
 
 AC_CHECK_HEADER([zlib.h],
    [dummy="yes"],
    [AC_MSG_ERROR("Cannot find zlib.h. Make sure your CFLAGS environment variable contains include lines for the location of this file")])
 
-AC_CHECK_HEADERS(netinet/in.h)
-
 SHM_OPEN_LIBS=""
 AC_MSG_CHECKING([whether shm_open() is present])
 LIBS_save=${LIBS}
@@ -102,15 +101,44 @@ AM_PROG_CC_C_O
 AC_C_CONST
 AC_C_INLINE
 AC_PROG_CC_STDC
+AC_C_BIGENDIAN
 AC_C___ATTRIBUTE__
 
 ### Checks for library functions
 AC_ISC_POSIX
-AC_FUNC_ALLOCA
 
-AC_OUTPUT([
+AC_CONFIG_FILES([
 Makefile
 src/Makefile
 src/bin/Makefile
 src/bin/xcf/Makefile
+src/bin/pdf/Makefile
 ])
+
+AC_OUTPUT
+
+#####################################################################
+## Info
+
+echo
+echo
+echo
+echo "------------------------------------------------------------------------"
+echo "$PACKAGE $VERSION"
+echo "------------------------------------------------------------------------"
+echo
+echo
+echo "Configuration Options Summary:"
+echo
+echo "Loaders:"
+echo "  XCF..................: yes"
+echo "  PDF..................: ${have_poppler}"
+echo
+echo "Compilation............: make (or gmake)"
+echo "  CPPFLAGS.............: $CPPFLAGS"
+echo "  CFLAGS...............: $CFLAGS"
+echo "  LDFLAGS..............: $LDFLAGS"
+echo
+echo "Installation...........: make install (as root if needed, with 'su' or 'sudo')"
+echo "  prefix...............: $prefix"
+echo
diff --git a/src/bin/Makefile.am b/src/bin/Makefile.am
index f64bd1c..eae5af3 100644
--- a/src/bin/Makefile.am
+++ b/src/bin/Makefile.am
@@ -1,3 +1,7 @@
 MAINTAINERCLEANFILES = Makefile.in
 
 SUBDIRS = xcf
+
+if HAVE_PDF
+SUBDIRS += pdf
+endif
diff --git a/src/bin/pdf/Makefile.am b/src/bin/pdf/Makefile.am
new file mode 100644
index 0000000..3700ceb
--- /dev/null
+++ b/src/bin/pdf/Makefile.am
@@ -0,0 +1,19 @@
+MAINTAINERCLEANFILES = Makefile.in
+
+AM_CPPFLAGS = \
+-I$(top_srcdir) \
+-I$(top_srcdir)/src \
+-I$(top_srcdir)/src/bin \
+-I$(top_srcdir)/src/bin/pdf \
+-DPACKAGE_BIN_DIR=\"$(bindir)\" \
+-DPACKAGE_LIB_DIR=\"$(libdir)\" \
+-DPACKAGE_DATA_DIR=\"$(datadir)/$(PACKAGE)\" \
+@EINA_CFLAGS@ \
+@POPPLER_CFLAGS@
+
+bin_PROGRAMS = evas_image_loader.pdf
+
+evas_image_loader_pdf_SOURCES = main.cpp
+evas_image_loader_pdf_CFLAGS =
+evas_image_loader_pdf_LDADD = @POPPLER_LIBS@ @EINA_LIBS@ @SHM_OPEN_LIBS@
+evas_image_loader_pdf_LDFLAGS =
diff --git a/src/bin/pdf/main.cpp b/src/bin/pdf/main.cpp
new file mode 100644
index 0000000..24017bb
--- /dev/null
+++ b/src/bin/pdf/main.cpp
@@ -0,0 +1,304 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/mman.h>
+#include <fcntl.h>
+
+#include <GlobalParams.h>
+#include <PDFDoc.h>
+#include <ErrorCodes.h>
+#include <Page.h>
+#include <SplashOutputDev.h>
+#include <splash/SplashBitmap.h>
+
+#include <Eina.h>
+
+
+#define DATA32  unsigned int
+
+//#define PDF_DBG
+
+#ifdef PDF_DBG
+#define D(fmt, args...) fprintf(stderr, fmt, ## args)
+#else
+#define D(fmt, args...)
+#endif
+
+
+PDFDoc *pdfdoc;
+bool locked = false;
+SplashOutputDev *output_dev;
+
+::Page *page;
+int width = 0;
+int height = 0;
+void *data;
+
+static int shm_fd = -1;
+static int shm_size = 0;
+static void *shm_addr = NULL;
+static char shmfile[1024] = "";
+
+static void
+shm_alloc(int dsize)
+{
+#ifdef HAVE_SHM_OPEN
+   srand(time(NULL));
+   do
+     {
+        snprintf(shmfile, sizeof(shmfile), "/evas-loader-xcf.%i.%i",
+                 (int)getpid(), (int)rand());
+        shm_fd = shm_open(shmfile, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
+     }
+   while (shm_fd < 0);
+
+   if (ftruncate(shm_fd, dsize) < 0)
+     {
+        close(shm_fd);
+        shm_unlink(shmfile);
+        shm_fd = -1;
+	goto failed;
+     }
+   shm_addr = mmap(NULL, dsize, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
+   if (shm_addr == MAP_FAILED)
+     {
+        close(shm_fd);
+        shm_unlink(shmfile);
+        shm_fd = -1;
+        goto failed;
+     }
+   shm_size = dsize;
+   return;
+failed:
+#endif
+   shm_addr = malloc(dsize);
+}
+
+static void
+shm_free(void)
+{
+#ifdef HAVE_SHM_OPEN
+   if (shm_fd >= 0)
+     {
+        munmap(shm_addr, shm_size);
+        close(shm_fd);
+        shm_fd = -1;
+        shm_addr = NULL;
+        return;
+     }
+#endif
+   free(shm_addr);
+   shm_addr = NULL;
+   shm_fd = -1;
+}
+
+Eina_Bool poppler_init(const char *file, int page_nbr, double dpi, int size_w, int size_h)
+{
+   Object obj;
+   SplashColor white;
+
+   if (!file || !*file)
+     return EINA_FALSE;
+
+   if (page_nbr < 0)
+     return EINA_FALSE;
+
+   if (!(globalParams = new GlobalParams()))
+     return EINA_FALSE;
+
+   if (!eina_init())
+     goto del_global_param;
+
+   if (globalParams->getAntialias())
+     globalParams->setAntialias((char *)"yes");
+   if (globalParams->getVectorAntialias())
+     globalParams->setVectorAntialias((char *)"yes");
+
+   pdfdoc = new PDFDoc(new GooString(file), NULL);
+   if (!pdfdoc)
+     goto del_global_param;
+
+   if (!pdfdoc->isOk() || (pdfdoc->getErrorCode() == errEncrypted))
+     goto del_pdfdoc;
+
+   if (page_nbr >= pdfdoc->getNumPages())
+     goto del_pdfdoc;
+
+   /* load the page */
+
+   page = pdfdoc->getCatalog()->getPage(page_nbr + 1);
+   if (!page || !page->isOk())
+     goto del_pdfdoc;
+
+   width = page->getMediaWidth();
+   height = page->getMediaHeight();
+
+   if ((size_w > 0) || (size_h > 0))
+     {
+        /* FIXME: tell poller to render at the new width and height
+        unsigned int w2 = width, h2 = height;
+        if (size_w > 0)
+          {
+             w2 = size_w;
+             h2 = (size_w * h) / w;
+             if ((size_h > 0) && (h2 > size_h))
+               {
+                  unsigned int w3;
+                  h2 = size_h;
+                  w3 = (size_h * w) / h;
+                  if (w3 > w2)
+                     w2 = w3;
+               }
+          }
+        else if (size_h > 0)
+          {
+             h2 = size_h;
+             w2 = (size_h * w) / h;
+          }
+        width = w2;
+        height = h2;
+         */
+     }
+   else if (dpi > 0.0)
+     {
+        /* FIXME: tell poppler to render at this size
+        width = (width * dpi) / 72.0;
+        height = (height * dpi) / 72.0;
+         */
+     }
+
+   return EINA_TRUE;
+
+ del_pdfdoc:
+   delete pdfdoc;
+ del_global_param:
+   delete globalParams;
+
+   return EINA_FALSE;
+}
+
+void poppler_shutdown()
+{
+   delete pdfdoc;
+   eina_shutdown();
+   delete globalParams;
+}
+
+void poppler_load_image(double dpi, int size_w, int size_h)
+{
+   SplashOutputDev *output_dev;
+   SplashColor      white;
+   SplashColorPtr   color_ptr;
+
+   white[0] = 255;
+   white[1] = 255;
+   white[2] = 255;
+   white[3] = 255;
+
+   output_dev = new SplashOutputDev(splashModeXBGR8, 4, gFalse, white);
+   if (!output_dev)
+     return;
+
+   output_dev->startDoc(pdfdoc->getXRef());
+
+   if (dpi <= 0.0) dpi = 72.0;
+
+   page->display(output_dev,
+                 dpi, dpi, 0,
+                 false, false, false,
+                 pdfdoc->getCatalog());
+   color_ptr = output_dev->getBitmap()->getDataPtr();
+
+   shm_alloc(width * height * sizeof(DATA32));
+   if (!shm_addr)
+     goto del_outpput_dev;
+   data = shm_addr;
+   memcpy(data, color_ptr, width * height * sizeof(DATA32));
+
+ del_outpput_dev:
+   delete output_dev;
+}
+
+int
+main(int argc, char **argv)
+{
+   char *file;
+   int i;
+   int size_w = 0, size_h = 0;
+   int head_only = 0;
+   int page = 0;
+   double dpi = -1.0;
+
+   if (argc < 2) return -1;
+   // file is ALWAYS first arg, other options come after
+   file = argv[1];
+   for (i = 2; i < argc; i++)
+     {
+        if      (!strcmp(argv[i], "-head"))
+           // asked to only load header, not body/data
+           head_only = 1;
+        else if (!strcmp(argv[i], "-key"))
+          {
+             i++;
+             page = atoi(argv[i]);
+             i++;
+          }
+        else if (!strcmp(argv[i], "-opt-scale-down-by"))
+          { // not used by pdf loader
+             i++;
+             // int scale_down = atoi(argv[i]);
+          }
+        else if (!strcmp(argv[i], "-opt-dpi"))
+          {
+             i++;
+             dpi = ((double)atoi(argv[i])) / 1000.0; // dpi is an int multiplied by 1000 (so 72dpi is 72000)
+             i++;
+          }
+        else if (!strcmp(argv[i], "-opt-size"))
+          { // not used by pdf loader
+             i++;
+             size_w = atoi(argv[i]);
+             i++;
+             size_h = atoi(argv[i]);
+          }
+     }
+
+   D("poppler_file_init\n");
+   D("dpi....: %f\n", dpi);
+   D("page...: %d\n", page);
+
+   if (!poppler_init(file, page, dpi, size_w, size_h))
+     return -1;
+   D("poppler_file_init done\n");
+
+   if (!head_only)
+     {
+        poppler_load_image(dpi, size_w, size_h);
+     }
+
+   D("size...: %ix%i\n", width, height);
+   D("alpha..: 1\n");
+
+   printf("size %i %i\n", width, height);
+   printf("alpha 0\n");
+
+   if (!head_only)
+     {
+        if (shm_fd >= 0) printf("shmfile %s\n", shmfile);
+        else
+          {
+             // could also to "tmpfile %s\n" like shmfile but just
+             // a mmaped tmp file on the system
+             printf("data\n");
+             fwrite(data, width * height * sizeof(DATA32), 1, stdout);
+          }
+        shm_free();
+     }
+   else
+     printf("done\n");
+
+   poppler_shutdown();
+
+   return 0;
+}
diff --git a/src/bin/xcf/common.h b/src/bin/xcf/common.h
index a6de744..209c3c1 100644
--- a/src/bin/xcf/common.h
+++ b/src/bin/xcf/common.h
@@ -1,7 +1,9 @@
 #ifndef __COMMON
 #define __COMMON 1
 
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
 
 #include <stdio.h>
 #include <stdlib.h>