/*
** 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);
}
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: %p", 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! Format is %i", info.format);
//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;
}
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;
}
/*
* 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 == MagickFalse)
SyncImage(image);
} else {
