extern "C" jboolean Java_org_ebookdroid_droids_djvu_codec_DjvuPage_renderPage(JNIEnv *env, jclass cls, jlong pageHangle,
jint targetWidth, jint targetHeight,
jfloat pageSliceX, jfloat pageSliceY,
jfloat pageSliceWidth,
jfloat pageSliceHeight, jintArray buffer,
jint rendermode)
{
DEBUG_WRITE("Rendering page");
ddjvu_page_t* page = (ddjvu_page_t*) ((pageHangle));
ddjvu_rect_t pageRect;
pageRect.x = 0;
pageRect.y = 0;
pageRect.w = targetWidth / pageSliceWidth;
pageRect.h = targetHeight / pageSliceHeight;
ddjvu_rect_t targetRect;
targetRect.x = pageSliceX * targetWidth / pageSliceWidth;
targetRect.y = pageSliceY * targetHeight / pageSliceHeight;
targetRect.w = targetWidth;
targetRect.h = targetHeight;
unsigned int masks[] = { 0xFF0000, 0x00FF00, 0x0000FF };
ddjvu_format_t* pixelFormat = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 3, masks);
ddjvu_format_set_row_order(pixelFormat, TRUE);
ddjvu_format_set_y_direction(pixelFormat, TRUE);
char *pBuffer = (char *) env->GetPrimitiveArrayCritical(buffer, 0);
jboolean result = ddjvu_page_render(page, (ddjvu_render_mode_t) rendermode, &pageRect, &targetRect, pixelFormat,
targetWidth * 4, pBuffer);
env->ReleasePrimitiveArrayCritical(buffer, pBuffer, 0);
ddjvu_format_release(pixelFormat);
return result;
}
Model::DjVuDocument::DjVuDocument(ddjvu_context_t* context, ddjvu_document_t* document) :
m_mutex(),
m_context(context),
m_document(document),
m_format(0),
m_indexByName()
{
unsigned int mask[] = {0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000};
m_format = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, mask);
ddjvu_format_set_row_order(m_format, 1);
ddjvu_format_set_y_direction(m_format, 1);
const int fileNum = ddjvu_document_get_filenum(m_document);
for(int index = 0; index < fileNum; ++index)
{
ddjvu_fileinfo_t fileinfo;
if(ddjvu_document_get_fileinfo(m_document, index, &fileinfo) != DDJVU_JOB_OK || fileinfo.type != 'P')
{
continue;
}
m_indexByName[QString::fromUtf8(fileinfo.id)] = m_indexByName[QString::fromUtf8(fileinfo.name)] = m_indexByName[QString::fromUtf8(fileinfo.title)] = fileinfo.pageno;
}
}
static int openDocument(lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
int cache_size = luaL_optint(L, 2, 10 << 20);
DjvuDocument *doc = (DjvuDocument*) lua_newuserdata(L, sizeof(DjvuDocument));
luaL_getmetatable(L, "djvudocument");
lua_setmetatable(L, -2);
doc->context = ddjvu_context_create("kindlepdfviewer");
if (! doc->context) {
return luaL_error(L, "cannot create context");
}
//printf("## cache_size = %d\n", cache_size);
ddjvu_cache_set_size(doc->context, (unsigned long)cache_size);
doc->doc_ref = ddjvu_document_create_by_filename_utf8(doc->context, filename, TRUE);
if (! doc->doc_ref)
return luaL_error(L, "cannot open DjVu file <%s>", filename);
while (! ddjvu_document_decoding_done(doc->doc_ref))
handle(L, doc->context, True);
doc->pixelformat = ddjvu_format_create(DDJVU_FORMAT_GREY8, 0, NULL);
if (! doc->pixelformat) {
return luaL_error(L, "cannot create DjVu pixelformat for <%s>", filename);
}
ddjvu_format_set_row_order(doc->pixelformat, 1);
ddjvu_format_set_y_direction(doc->pixelformat, 1);
/* dithering bits <8 are ignored by djvulibre */
/* ddjvu_format_set_ditherbits(doc->pixelformat, 4); */
return 1;
}
extern "C" jboolean Java_org_ebookdroid_droids_djvu_codec_DjvuPage_renderPageDirect(JNIEnv *env, jclass cls,
jlong pageHangle, jlong contextHandle, jint targetWidth,
jint targetHeight, jfloat pageSliceX,
jfloat pageSliceY,
jfloat pageSliceWidth,
jfloat pageSliceHeight,
jobject byteBuffer, jint rendermode)
{
DEBUG("Rendering page bitmap");
void *pixels;
int ret;
pixels = env->GetDirectBufferAddress(byteBuffer);
if (!pixels) {
ERROR("GetDirectBufferAddress failed!");
return JNI_FALSE;
}
ddjvu_page_t* page = (ddjvu_page_t*) ((pageHangle));
ddjvu_rect_t pageRect;
pageRect.x = 0;
pageRect.y = 0;
pageRect.w = targetWidth / pageSliceWidth;
pageRect.h = targetHeight / pageSliceHeight;
ddjvu_rect_t targetRect;
targetRect.x = pageSliceX * targetWidth / pageSliceWidth;
targetRect.y = pageSliceY * targetHeight / pageSliceHeight;
targetRect.w = targetWidth;
targetRect.h = targetHeight;
unsigned int masks[] = {0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000};
ddjvu_format_t* pixelFormat = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, masks);
ddjvu_format_set_row_order(pixelFormat, TRUE);
ddjvu_format_set_y_direction(pixelFormat, TRUE);
while (!ddjvu_page_decoding_done(page))
{
waitAndHandleMessages(env, contextHandle);
}
jboolean result = ddjvu_page_render(page, (ddjvu_render_mode_t) rendermode, &pageRect, &targetRect, pixelFormat,
targetWidth * 4, (char*) pixels);
ddjvu_format_release(pixelFormat);
return result;
}
DjVuDocument::DjVuDocument(QMutex* globalMutex, ddjvu_context_t* context, ddjvu_document_t* document) :
m_mutex(),
m_globalMutex(globalMutex),
m_context(context),
m_document(document),
m_format(0),
m_indexByName()
{
unsigned int mask[] = {0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000};
m_format = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, mask);
ddjvu_format_set_row_order(m_format, 1);
ddjvu_format_set_y_direction(m_format, 1);
prepareIndexByName();
}
static int getPagePix(lua_State *L) {
DjvuPage *page = (DjvuPage*) luaL_checkudata(L, 1, "djvupage");
KOPTContext *kctx = (KOPTContext*) lua_topointer(L, 2);
ddjvu_rect_t prect;
ddjvu_rect_t rrect;
int px, py, pw, ph, rx, ry, rw, rh, status;
px = 0;
py = 0;
pw = ddjvu_page_get_width(page->page_ref);
ph = ddjvu_page_get_height(page->page_ref);
prect.x = px;
prect.y = py;
rx = (int)kctx->bbox.x0;
ry = (int)kctx->bbox.y0;
rw = (int)(kctx->bbox.x1 - kctx->bbox.x0);
rh = (int)(kctx->bbox.y1 - kctx->bbox.y0);
float scale = kctx->zoom;
prect.w = pw * scale;
prect.h = ph * scale;
rrect.x = rx * scale;
rrect.y = ry * scale;
rrect.w = rw * scale;
rrect.h = rh * scale;
printf("rendering page:%d,%d,%d,%d\n",rrect.x,rrect.y,rrect.w,rrect.h);
WILLUSBITMAP *dst = &kctx->src;
bmp_init(dst);
dst->width = rrect.w;
dst->height = rrect.h;
dst->bpp = 8;
bmp_alloc(dst);
if (dst->bpp == 8) {
int ii;
for (ii = 0; ii < 256; ii++)
dst->red[ii] = dst->blue[ii] = dst->green[ii] = ii;
}
ddjvu_format_set_row_order(page->doc->pixelformat, 1);
ddjvu_page_render(page->page_ref, 0, &prect, &rrect, page->doc->pixelformat,
bmp_bytewidth(dst), (char *) dst->data);
return 0;
}
/*
* DjVu advertised readiness to provide bitmap: So get it!
* we use the RGB format!
*/
static void
get_page_image(LoadContext *lc, ddjvu_page_t *page, int x, int y, int w, int h, const ImageInfo *image_info ) {
ddjvu_format_t
*format;
ddjvu_page_type_t
type;
Image
*image;
int
ret,
stride;
unsigned char
*q;
ddjvu_rect_t rect;
rect.x = x;
rect.y = y;
rect.w = (unsigned int) w; /* /10 */
rect.h = (unsigned int) h; /* /10 */
image = lc->image;
type = ddjvu_page_get_type(lc->page);
/* stride of this temporary buffer: */
stride = (type == DDJVU_PAGETYPE_BITONAL)?
(image->columns + 7)/8 : image->columns *3;
q = (unsigned char *) AcquireQuantumMemory(image->rows,stride);
if (q == (unsigned char *) NULL)
return;
format = ddjvu_format_create(
(type == DDJVU_PAGETYPE_BITONAL)?DDJVU_FORMAT_LSBTOMSB : DDJVU_FORMAT_RGB24,
/* DDJVU_FORMAT_RGB24
* DDJVU_FORMAT_RGBMASK32*/
/* DDJVU_FORMAT_RGBMASK32 */
0, NULL);
#if 0
/* fixme: ThrowReaderException is a macro, which uses `exception' variable */
if (format == NULL)
{
abort();
/* ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); */
}
#endif
ddjvu_format_set_row_order(format, 1);
ddjvu_format_set_y_direction(format, 1);
ret = ddjvu_page_render(page,
DDJVU_RENDER_COLOR, /* ddjvu_render_mode_t */
&rect,
&rect, /* mmc: ?? */
format,
stride, /* ?? */
(char*)q);
(void) ret;
ddjvu_format_release(format);
if (type == DDJVU_PAGETYPE_BITONAL) {
/* */
#if DEBUG
printf("%s: expanding BITONAL page/image\n", __FUNCTION__);
#endif
register IndexPacket *indexes;
size_t bit, byte;
for (y=0; y < (ssize_t) image->rows; y++)
{
PixelPacket * o = QueueAuthenticPixels(image,0,y,image->columns,1,&image->exception);
if (o == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
bit=0;
byte=0;
/* fixme: the non-aligned, last =<7 bits ! that's ok!!!*/
for (x= 0; x < (ssize_t) image->columns; x++)
{
if (bit == 0) byte= (size_t) q[(y * stride) + (x / 8)];
if (indexes != (IndexPacket *) NULL)
SetPixelIndex(indexes+x,(IndexPacket) (((byte & 0x01) != 0) ? 0x00 : 0x01));
bit++;
if (bit == 8)
bit=0;
byte>>=1;
}
if (SyncAuthenticPixels(image,&image->exception) == MagickFalse)
break;
}
if (!image->ping)
SyncImage(image);
} else {
gint32
load_djvu (const gchar * filename,
GimpRunMode runmode,
gboolean preview)
{
GimpPixelRgn rgn_in;
GimpDrawable *drawable;
gint32 volatile image_ID;
gint32 layer_ID;
int x1, y1, x2, y2, width, height;
unsigned char *src = NULL;
int file_length;
ctx = ddjvu_context_create("gimp");
//
doc = ddjvu_document_create_by_filename(ctx,filename, TRUE);
while (! ddjvu_document_decoding_done(doc))
handle(TRUE);
i = ddjvu_document_get_pagenum(doc);
dialog( &pageno ,i);
//processing the page
page = ddjvu_page_create_by_pageno(doc, pageno-1);
while (! ddjvu_page_decoding_done(page))
handle(TRUE);
if (ddjvu_page_decoding_error(page))
{
fprintf(stderr,"unexpected error ");
exit(10);
}
// ddjvu variables
ddjvu_rect_t prect;
ddjvu_rect_t rrect;
ddjvu_format_style_t style;
ddjvu_render_mode_t mode;
ddjvu_format_t *fmt;
int iw = ddjvu_page_get_width(page);
int ih = ddjvu_page_get_height(page);
int dpi = ddjvu_page_get_resolution(page);
ddjvu_page_type_t type = ddjvu_page_get_type(page);
char *image = 0;
int rowsize;
//end of ddjvu variables
style= DDJVU_FORMAT_RGB24;
mode=DDJVU_RENDER_COLOR;
fmt = ddjvu_format_create(style, 0, 0);
ddjvu_format_set_row_order(fmt, 1);
prect.w = iw;
prect.h = ih;
prect.x = 0;
prect.y = 0;
flag_scale=150;
prect.w = (unsigned int) (iw * flag_scale) / dpi;
prect.h = (unsigned int) (ih * flag_scale) / dpi;
rrect = prect;
rowsize = (rrect.w *3);
image = (char*)malloc(rowsize * rrect.h);
//generating page
ddjvu_page_render(page, mode, &prect, &rrect, fmt, rowsize, image);
ddjvu_page_release(page);
char *s =image;
/* create output image */
width = prect.w;
height = prect.h;
x1 = 0;
y1 = 0;
x2 = prect.w;
y2 = prect.h;
image_ID = gimp_image_new (width, height, GIMP_RGB);
layer_ID = gimp_layer_new (image_ID, _("Background"),
width, height, GIMP_RGB, 100, GIMP_NORMAL_MODE);
gimp_image_add_layer (image_ID, layer_ID, 0);
drawable = gimp_drawable_get (layer_ID); // initializes the drawable
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
gimp_pixel_rgn_init (&rgn_in, drawable, x1, y1,
x2 - x1, y2 - y1, TRUE, TRUE);
gimp_pixel_rgn_set_rect (&rgn_in, image, 0, 0, width, height);
//g_free (buf);
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id, x1, y1, x2 - x1, y2 - y1);
gimp_image_set_filename (image_ID, filename);
return image_ID;
image =NULL;
//not handling any error
if (doc)
ddjvu_document_release(doc);
if (ctx)
ddjvu_context_release(ctx);
}
extern "C" jboolean Java_org_ebookdroid_droids_djvu_codec_DjvuPage_renderPageBitmap(JNIEnv *env, jclass cls,
jlong pageHangle, jint targetWidth,
jint targetHeight, jfloat pageSliceX,
jfloat pageSliceY,
jfloat pageSliceWidth,
jfloat pageSliceHeight,
jobject bitmap, jint rendermode)
{
//#ifdef USE_JNI_BITMAP_API
DEBUG_WRITE("Rendering page bitmap");
AndroidBitmapInfo info;
void *pixels;
int ret;
if ((ret = NativeBitmap_getInfo(env, bitmap, &info)) < 0)
{
DEBUG_PRINT("AndroidBitmap_getInfo() failed ! error=%d", ret);
return 0;
}
DEBUG_WRITE("Checking format");
// if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888) {
// DEBUG_WRITE("Bitmap format is not RGBA_8888 !");
// return 0;
// }
if (info.format != ANDROID_BITMAP_FORMAT_RGB_565)
{
DEBUG_WRITE("Bitmap format is not RGB_565 !");
return 0;
}
DEBUG_WRITE("locking pixels");
if ((ret = NativeBitmap_lockPixels(env, bitmap, &pixels)) < 0)
{
DEBUG_PRINT("AndroidBitmap_lockPixels() failed ! error=%d", ret);
return 0;
}
ddjvu_page_t* page = (ddjvu_page_t*) ((pageHangle));
ddjvu_rect_t pageRect;
pageRect.x = 0;
pageRect.y = 0;
pageRect.w = targetWidth / pageSliceWidth;
pageRect.h = targetHeight / pageSliceHeight;
ddjvu_rect_t targetRect;
targetRect.x = pageSliceX * targetWidth / pageSliceWidth;
targetRect.y = pageSliceY * targetHeight / pageSliceHeight;
targetRect.w = targetWidth;
targetRect.h = targetHeight;
unsigned int masks[] = { 0xF800, 0x07E0, 0x001F };
ddjvu_format_t* pixelFormat = ddjvu_format_create(DDJVU_FORMAT_RGBMASK16, 3, masks);
// unsigned int masks[] = {0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000};
// ddjvu_format_t* pixelFormat = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, masks);
ddjvu_format_set_row_order(pixelFormat, TRUE);
ddjvu_format_set_y_direction(pixelFormat, TRUE);
// jboolean result = ddjvu_page_render(page, DDJVU_RENDER_COLOR, &pageRect, &targetRect, pixelFormat, targetWidth * 4, (char*)pixels);
jboolean result = ddjvu_page_render(page, (ddjvu_render_mode_t) rendermode, &pageRect, &targetRect, pixelFormat,
targetWidth * 2, (char*) pixels);
ddjvu_format_release(pixelFormat);
NativeBitmap_unlockPixels(env, bitmap);
return result;
//#else
// DEBUG_WRITE("Rendering page bitmap not implemented");
// return 0;
//#endif
}
JNIEXPORT jboolean JNICALL
Java_universe_constellation_orion_viewer_djvu_DjvuDocument_drawPage(JNIEnv *env, jobject thiz, jobject bitmap,
float zoom,
int pageW, int pageH, int patchX, int patchY, int patchW, int patchH)
{
LOGI("==================Start Rendering==============");
int ret;
AndroidBitmapInfo info;
void *pixels;
int num_pixels = pageW * pageH;
LOGI("Rendering page=%dx%d patch=[%d,%d,%d,%d]",
pageW, pageH, patchX, patchY, patchW, patchH);
LOGI("page: %x", page);
LOGI("In native method\n");
if ((ret = AndroidBitmap_getInfo(env, bitmap, &info)) < 0) {
LOGE("AndroidBitmap_getInfo() failed ! error=%d", ret);
return 0;
}
LOGI("Checking format\n");
if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888) {
LOGE("Bitmap format is not RGBA_8888 !");
return 0;
}
LOGI("locking pixels\n");
if ((ret = AndroidBitmap_lockPixels(env, bitmap, &pixels)) < 0) {
LOGE("AndroidBitmap_lockPixels() failed ! error=%d", ret);
return 0;
}
//float zoom = 0.0001f * zoom10000;
int pageWidth = ddjvu_page_get_width(page);
int pageHeight = ddjvu_page_get_height(page);
ddjvu_rect_t pageRect;
pageRect.x = 0;
pageRect.y = 0;
pageRect.w = round(zoom * pageWidth);
pageRect.h = round(zoom * pageHeight);
LOGI("Original page=%dx%d patch=[%d,%d,%d,%d]",
pageWidth, pageHeight, pageRect.x, pageRect.y, pageRect.w, pageRect.h);
ddjvu_rect_t targetRect;
targetRect.x = patchX;
targetRect.y = patchY;
targetRect.w = patchW;
targetRect.h = patchH;
int shift = 0;
if (targetRect.x < 0) {
shift = -targetRect.x;
targetRect.w += targetRect.x;
targetRect.x = 0;
}
if (targetRect.y < 0) {
shift += -targetRect.y * pageW;
targetRect.h += targetRect.y;
targetRect.y = 0;
}
if (pageRect.w < targetRect.x + targetRect.w) {
targetRect.w = targetRect.w - (targetRect.x + targetRect.w - pageRect.w);
}
if (pageRect.h < targetRect.y + targetRect.h) {
targetRect.h = targetRect.h - (targetRect.y + targetRect.h - pageRect.h);
}
memset(pixels, 255, num_pixels * 4);
LOGI("Rendering page=%dx%d patch=[%d,%d,%d,%d]",
patchW, patchH, targetRect.x, targetRect.y, targetRect.w, targetRect.h);
unsigned int masks[4] = { 0xff, 0xff00, 0xff0000, 0xff000000 };
ddjvu_format_t* pixelFormat = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, masks);
LOGI("zoom=%f ", zoom);
ddjvu_format_set_row_order(pixelFormat, TRUE);
ddjvu_format_set_y_direction(pixelFormat, TRUE);
char * buffer = &(((unsigned char *)pixels)[shift*4]);
jboolean result = ddjvu_page_render(page, DDJVU_RENDER_COLOR, &pageRect, &targetRect, pixelFormat, pageW * 4, buffer);
ddjvu_format_release(pixelFormat);
orion_updateContrast((unsigned char *) pixels, num_pixels*4);
AndroidBitmap_unlockPixels(env, bitmap);
LOGI("...Rendered");
return 1;
}
/*
** Returns 0 for success, negative number for error code.
** bpp can be 24 or 8.
**
*/
int bmpdjvu_djvufile_to_bmp(WILLUSBITMAP *bmp,char *infile,int pageno,
int dpi,int bpp,FILE *out)
{
ddjvu_context_t *ctx;
ddjvu_document_t *doc;
ddjvu_page_t *page;
/* ddjvu_page_type_t type; */
ddjvu_rect_t prect;
ddjvu_rect_t rrect;
ddjvu_format_style_t style;
ddjvu_render_mode_t mode;
ddjvu_format_t *fmt;
int i,iw,ih,idpi,status;
ctx=ddjvu_context_create("bmpdjvu_djvufile_to_bmp");
if (ctx==NULL)
{
nprintf(out,"Cannot create djvu context.\n");
return(-1);
}
doc=ddjvu_document_create_by_filename(ctx,infile,1);
if (doc==NULL)
{
ddjvu_context_release(ctx);
nprintf(out,"Cannot create djvu document context from djvu file %s.\n",
infile);
return(-2);
}
i=ddjvu_document_get_pagenum(doc);
if (pageno<0 || pageno>i)
{
ddjvu_document_release(doc);
ddjvu_context_release(ctx);
nprintf(out,"Page number %d is out of range for djvu file %s.\n",pageno,infile);
return(-3);
}
page=ddjvu_page_create_by_pageno(doc,pageno-1);
if (page==NULL)
{
ddjvu_document_release(doc);
ddjvu_context_release(ctx);
nprintf(out,"Cannot parse page %d of djvu file %s.\n",pageno,infile);
return(-4);
}
while (!ddjvu_page_decoding_done(page))
handle(1,ctx);
if (ddjvu_page_decoding_error(page))
{
ddjvu_page_release(page);
ddjvu_document_release(doc);
ddjvu_context_release(ctx);
nprintf(out,"Error decoding page %d of djvu file %s.\n",pageno,infile);
return(-5);
}
/* type= */ ddjvu_page_get_type(page);
/*
printf("type=%d\n",type);
description=ddjvu_page_get_long_description(page);
printf("Description='%s'\n",description);
*/
iw = ddjvu_page_get_width(page);
ih = ddjvu_page_get_height(page);
idpi = ddjvu_page_get_resolution(page);
prect.x=prect.y=0;
bmp->width=prect.w=iw*dpi/idpi;
bmp->height=prect.h=ih*dpi/idpi;
bmp->bpp=(bpp==8) ? 8 : 24;
rrect=prect;
bmp_alloc(bmp);
if (bmp->bpp==8)
{
int ii;
for (ii=0;ii<256;ii++)
bmp->red[ii]=bmp->blue[ii]=bmp->green[ii]=ii;
}
mode=DDJVU_RENDER_COLOR;
style=bpp==8 ? DDJVU_FORMAT_GREY8 : DDJVU_FORMAT_RGB24;
fmt=ddjvu_format_create(style,0,0);
if (fmt==NULL)
{
ddjvu_page_release(page);
ddjvu_document_release(doc);
ddjvu_context_release(ctx);
nprintf(out,"Error setting DJVU format for djvu file %s (page %d).\n",infile,pageno);
return(-6);
}
ddjvu_format_set_row_order(fmt,1);
status=ddjvu_page_render(page,mode,&prect,&rrect,fmt,bmp_bytewidth(bmp),(char *)bmp->data);
ddjvu_format_release(fmt);
ddjvu_page_release(page);
ddjvu_document_release(doc);
ddjvu_context_release(ctx);
if (!status)
{
nprintf(out,"Error rendering page %d of djvu file %s.\n",pageno,infile);
return(-7);
}
return(0);
}
static int reflowPage(lua_State *L) {
DjvuPage *page = (DjvuPage*) luaL_checkudata(L, 1, "djvupage");
KOPTContext *kctx = (KOPTContext*) lua_topointer(L, 2);
ddjvu_render_mode_t mode = (int) luaL_checkint(L, 3);
ddjvu_rect_t prect;
ddjvu_rect_t rrect;
int px, py, pw, ph, rx, ry, rw, rh, status;
px = 0;
py = 0;
pw = ddjvu_page_get_width(page->page_ref);
ph = ddjvu_page_get_height(page->page_ref);
prect.x = px;
prect.y = py;
rx = (int)kctx->bbox.x0;
ry = (int)kctx->bbox.y0;
rw = (int)(kctx->bbox.x1 - kctx->bbox.x0);
rh = (int)(kctx->bbox.y1 - kctx->bbox.y0);
double zoom = kctx->zoom*kctx->quality;
float scale = ((2*zoom*kctx->dev_width) / (double)pw + \
(2*zoom*kctx->dev_height) / (double)ph) / 2;
prect.w = pw * scale;
prect.h = ph * scale;
rrect.x = rx * scale;
rrect.y = ry * scale;
rrect.w = rw * scale;
rrect.h = rh * scale;
printf("rendering page:%d,%d,%d,%d\n",rrect.x,rrect.y,rrect.w,rrect.h);
kctx->zoom = scale;
WILLUSBITMAP *src = &kctx->src;
bmp_init(src);
src->width = rrect.w;
src->height = rrect.h;
src->bpp = 8;
bmp_alloc(src);
if (src->bpp == 8) {
int ii;
for (ii = 0; ii < 256; ii++)
src->red[ii] = src->blue[ii] = src->green[ii] = ii;
}
ddjvu_format_set_row_order(page->doc->pixelformat, 1);
status = ddjvu_page_render(page->page_ref, mode, &prect, &rrect, page->doc->pixelformat,
bmp_bytewidth(src), (char *) src->data);
if (kctx->precache) {
pthread_t rf_thread;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_create(&rf_thread, &attr, k2pdfopt_reflow_bmp, (void*) kctx);
pthread_attr_destroy(&attr);
} else {
k2pdfopt_reflow_bmp(kctx);
}
return 0;
}
zathura_error_t
djvu_document_open(zathura_document_t* document)
{
zathura_error_t error = ZATHURA_ERROR_OK;
if (document == NULL) {
error = ZATHURA_ERROR_INVALID_ARGUMENTS;
goto error_out;
}
djvu_document_t* djvu_document = calloc(1, sizeof(djvu_document_t));
if (djvu_document == NULL) {
error = ZATHURA_ERROR_OUT_OF_MEMORY;
goto error_out;
}
/* setup format */
static unsigned int masks[4] = {0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000};
djvu_document->format = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, masks);
if (djvu_document->format == NULL) {
error = ZATHURA_ERROR_UNKNOWN;
goto error_free;
}
ddjvu_format_set_row_order(djvu_document->format, TRUE);
/* setup context */
djvu_document->context = ddjvu_context_create("zathura");
if (djvu_document->context == NULL) {
error = ZATHURA_ERROR_UNKNOWN;
goto error_free;
}
/* setup document */
djvu_document->document =
ddjvu_document_create_by_filename(
djvu_document->context,
zathura_document_get_path(document),
FALSE
);
if (djvu_document->document == NULL) {
error = ZATHURA_ERROR_UNKNOWN;
goto error_free;
}
/* load document info */
ddjvu_message_t* msg;
ddjvu_message_wait(djvu_document->context);
while ((msg = ddjvu_message_peek(djvu_document->context)) &&
(msg->m_any.tag != DDJVU_DOCINFO)) {
if (msg->m_any.tag == DDJVU_ERROR) {
error = ZATHURA_ERROR_UNKNOWN;
goto error_free;
}
ddjvu_message_pop(djvu_document->context);
}
/* decoding error */
if (ddjvu_document_decoding_error(djvu_document->document)) {
handle_messages(djvu_document, true);
error = ZATHURA_ERROR_UNKNOWN;
goto error_free;
}
zathura_document_set_data(document, djvu_document);
zathura_document_set_number_of_pages(document,
ddjvu_document_get_pagenum(djvu_document->document));
return error;
error_free:
if (djvu_document->format != NULL) {
ddjvu_format_release(djvu_document->format);
}
if (djvu_document->context != NULL) {
ddjvu_context_release(djvu_document->context);
}
free(djvu_document);
error_out:
return error;
}
