static void drawbmp(fz_context *ctx, fz_document *doc, fz_page *page, fz_display_list *list, int pagenum, fz_cookie *cookie) { float zoom; fz_matrix ctm; fz_irect ibounds; fz_rect bounds, tbounds; int w, h; fz_device *dev; HDC dc, dc_main; RECT rc; HBRUSH bg_brush; HBITMAP hbmp; BITMAPINFO bmi = { 0 }; int bmp_data_len; unsigned char *bmp_data; int as_tga = !strstr(output, ".bmp"); fz_bound_page(doc, page, &bounds); zoom = resolution / 72; fz_pre_scale(fz_rotate(&ctm, rotation), zoom, zoom); tbounds = bounds; fz_round_rect(&ibounds, fz_transform_rect(&tbounds, &ctm)); w = width; h = height; if (res_specified) { fz_round_rect(&ibounds, &tbounds); if (w && ibounds.x1 - ibounds.x0 <= w) w = 0; if (h && ibounds.y1 - ibounds.y0 <= h) h = 0; } if (w || h) { float scalex = w / (tbounds.x1 - tbounds.x0); float scaley = h / (tbounds.y1 - tbounds.y0); fz_matrix scale_mat; if (w == 0) scalex = fit ? 1.0f : scaley; if (h == 0) scaley = fit ? 1.0f : scalex; if (!fit) scalex = scaley = min(scalex, scaley); fz_concat(&ctm, &ctm, fz_scale(&scale_mat, scalex, scaley)); tbounds = bounds; fz_transform_rect(&tbounds, &ctm); } fz_round_rect(&ibounds, &tbounds); fz_rect_from_irect(&tbounds, &ibounds); w = ibounds.x1 - ibounds.x0; h = ibounds.y1 - ibounds.y0; dc_main = GetDC(NULL); dc = CreateCompatibleDC(dc_main); hbmp = CreateCompatibleBitmap(dc_main, w, h); DeleteObject(SelectObject(dc, hbmp)); SetRect(&rc, 0, 0, w, h); bg_brush = CreateSolidBrush(RGB(0xFF,0xFF,0xFF)); FillRect(dc, &rc, bg_brush); DeleteObject(bg_brush); dev = fz_new_gdiplus_device(ctx, dc, &tbounds); if (list) fz_run_display_list(list, dev, &ctm, &tbounds, cookie); else fz_run_page(doc, page, dev, &ctm, cookie); fz_free_device(dev); bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader); bmi.bmiHeader.biWidth = w; bmi.bmiHeader.biHeight = as_tga ? -h : h; bmi.bmiHeader.biPlanes = 1; bmi.bmiHeader.biBitCount = as_tga ? 32 : 24; bmi.bmiHeader.biCompression = BI_RGB; bmp_data_len = as_tga ? w * h * 4 : ((w * 3 + 3) / 4) * 4 * h; bmp_data = fz_malloc(ctx, bmp_data_len); if (!GetDIBits(dc, hbmp, 0, h, bmp_data, &bmi, DIB_RGB_COLORS)) fz_throw(ctx, "cannot draw page %d in PDF file '%s'", pagenum, filename); DeleteDC(dc); ReleaseDC(NULL, dc_main); DeleteObject(hbmp); if (output) { char buf[512]; FILE *f; sprintf(buf, output, pagenum); f = fopen(buf, "wb"); if (!f) fz_throw(ctx, "could not create raster file '%s'", buf); if (as_tga) { fz_pixmap *pix = fz_new_pixmap_with_data(ctx, fz_device_bgr, w, h, bmp_data); fz_write_tga(ctx, pix, buf, 0); fz_drop_pixmap(ctx, pix); } else { BITMAPFILEHEADER bmpfh = { 0 }; static const int one = 1; if (!*(char *)&one) fz_throw(ctx, "rendering to BMP is not supported on big-endian architectures"); bmpfh.bfType = MAKEWORD('B', 'M'); bmpfh.bfOffBits = sizeof(bmpfh) + sizeof(bmi); bmpfh.bfSize = bmpfh.bfOffBits + bmp_data_len; fwrite(&bmpfh, sizeof(bmpfh), 1, f); fwrite(&bmi, sizeof(bmi), 1, f); fwrite(bmp_data, 1, bmp_data_len, f); } fclose(f); } if (showmd5) { fz_pixmap *pix = fz_new_pixmap_with_data(ctx, fz_device_bgr, bmp_data_len / 4 / h, h, bmp_data); unsigned char digest[16]; int i; fz_md5_pixmap(pix, digest); printf(" "); for (i = 0; i < 16; i++) printf("%02x", digest[i]); fz_drop_pixmap(ctx, pix); } fz_free(ctx, bmp_data); }
static fz_image * pdf_load_jpx(fz_context *ctx, pdf_document *doc, pdf_obj *dict, int forcemask) { fz_buffer *buf = NULL; fz_colorspace *colorspace = NULL; fz_pixmap *pix = NULL; pdf_obj *obj; fz_image *mask = NULL; fz_image *img = NULL; fz_var(pix); fz_var(buf); fz_var(colorspace); fz_var(mask); buf = pdf_load_stream(ctx, dict); /* FIXME: We can't handle decode arrays for indexed images currently */ fz_try(ctx) { unsigned char *data; size_t len; obj = pdf_dict_get(ctx, dict, PDF_NAME(ColorSpace)); if (obj) colorspace = pdf_load_colorspace(ctx, obj); len = fz_buffer_storage(ctx, buf, &data); pix = fz_load_jpx(ctx, data, len, colorspace); obj = pdf_dict_geta(ctx, dict, PDF_NAME(SMask), PDF_NAME(Mask)); if (pdf_is_dict(ctx, obj)) { if (forcemask) fz_warn(ctx, "Ignoring recursive JPX soft mask"); else mask = pdf_load_image_imp(ctx, doc, NULL, obj, NULL, 1); } obj = pdf_dict_geta(ctx, dict, PDF_NAME(Decode), PDF_NAME(D)); if (obj && !fz_colorspace_is_indexed(ctx, colorspace)) { float decode[FZ_MAX_COLORS * 2]; int i; for (i = 0; i < pix->n * 2; i++) decode[i] = pdf_array_get_real(ctx, obj, i); fz_decode_tile(ctx, pix, decode); } img = fz_new_image_from_pixmap(ctx, pix, mask); } fz_always(ctx) { fz_drop_image(ctx, mask); fz_drop_pixmap(ctx, pix); fz_drop_colorspace(ctx, colorspace); fz_drop_buffer(ctx, buf); } fz_catch(ctx) { fz_rethrow(ctx); } return img; }
pdf_obj * pdf_add_image(fz_context *ctx, pdf_document *doc, fz_image *image) { fz_pixmap *pixmap = NULL; pdf_obj *imobj = NULL; pdf_obj *dp; fz_buffer *buffer = NULL; pdf_obj *imref = NULL; fz_compressed_buffer *cbuffer; unsigned char digest[16]; int i, n; /* If we can maintain compression, do so */ cbuffer = fz_compressed_image_buffer(ctx, image); fz_var(pixmap); fz_var(buffer); fz_var(imobj); fz_var(imref); /* Check if the same image already exists in this doc. */ imref = pdf_find_image_resource(ctx, doc, image, digest); if (imref) return imref; imobj = pdf_add_new_dict(ctx, doc, 3); fz_try(ctx) { dp = pdf_dict_put_dict(ctx, imobj, PDF_NAME(DecodeParms), 3); pdf_dict_put(ctx, imobj, PDF_NAME(Type), PDF_NAME(XObject)); pdf_dict_put(ctx, imobj, PDF_NAME(Subtype), PDF_NAME(Image)); if (cbuffer) { fz_compression_params *cp = &cbuffer->params; switch (cp ? cp->type : FZ_IMAGE_UNKNOWN) { default: goto raw_or_unknown_compression; case FZ_IMAGE_JPEG: if (cp->u.jpeg.color_transform != -1) pdf_dict_put_int(ctx, dp, PDF_NAME(ColorTransform), cp->u.jpeg.color_transform); pdf_dict_put(ctx, imobj, PDF_NAME(Filter), PDF_NAME(DCTDecode)); break; case FZ_IMAGE_JPX: if (cp->u.jpx.smask_in_data) pdf_dict_put_int(ctx, dp, PDF_NAME(SMaskInData), cp->u.jpx.smask_in_data); pdf_dict_put(ctx, imobj, PDF_NAME(Filter), PDF_NAME(JPXDecode)); break; case FZ_IMAGE_FAX: if (cp->u.fax.columns) pdf_dict_put_int(ctx, dp, PDF_NAME(Columns), cp->u.fax.columns); if (cp->u.fax.rows) pdf_dict_put_int(ctx, dp, PDF_NAME(Rows), cp->u.fax.rows); if (cp->u.fax.k) pdf_dict_put_int(ctx, dp, PDF_NAME(K), cp->u.fax.k); if (cp->u.fax.end_of_line) pdf_dict_put_bool(ctx, dp, PDF_NAME(EndOfLine), cp->u.fax.end_of_line); if (cp->u.fax.encoded_byte_align) pdf_dict_put_bool(ctx, dp, PDF_NAME(EncodedByteAlign), cp->u.fax.encoded_byte_align); if (cp->u.fax.end_of_block) pdf_dict_put_bool(ctx, dp, PDF_NAME(EndOfBlock), cp->u.fax.end_of_block); if (cp->u.fax.black_is_1) pdf_dict_put_bool(ctx, dp, PDF_NAME(BlackIs1), cp->u.fax.black_is_1); if (cp->u.fax.damaged_rows_before_error) pdf_dict_put_int(ctx, dp, PDF_NAME(DamagedRowsBeforeError), cp->u.fax.damaged_rows_before_error); pdf_dict_put(ctx, imobj, PDF_NAME(Filter), PDF_NAME(CCITTFaxDecode)); break; case FZ_IMAGE_FLATE: if (cp->u.flate.columns) pdf_dict_put_int(ctx, dp, PDF_NAME(Columns), cp->u.flate.columns); if (cp->u.flate.colors) pdf_dict_put_int(ctx, dp, PDF_NAME(Colors), cp->u.flate.colors); if (cp->u.flate.predictor) pdf_dict_put_int(ctx, dp, PDF_NAME(Predictor), cp->u.flate.predictor); if (cp->u.flate.bpc) pdf_dict_put_int(ctx, dp, PDF_NAME(BitsPerComponent), cp->u.flate.bpc); pdf_dict_put(ctx, imobj, PDF_NAME(Filter), PDF_NAME(FlateDecode)); pdf_dict_put_int(ctx, imobj, PDF_NAME(BitsPerComponent), image->bpc); break; case FZ_IMAGE_LZW: if (cp->u.lzw.columns) pdf_dict_put_int(ctx, dp, PDF_NAME(Columns), cp->u.lzw.columns); if (cp->u.lzw.colors) pdf_dict_put_int(ctx, dp, PDF_NAME(Colors), cp->u.lzw.colors); if (cp->u.lzw.predictor) pdf_dict_put_int(ctx, dp, PDF_NAME(Predictor), cp->u.lzw.predictor); if (cp->u.lzw.early_change) pdf_dict_put_int(ctx, dp, PDF_NAME(EarlyChange), cp->u.lzw.early_change); if (cp->u.lzw.bpc) pdf_dict_put_int(ctx, dp, PDF_NAME(BitsPerComponent), cp->u.lzw.bpc); pdf_dict_put(ctx, imobj, PDF_NAME(Filter), PDF_NAME(LZWDecode)); break; case FZ_IMAGE_RLD: pdf_dict_put(ctx, imobj, PDF_NAME(Filter), PDF_NAME(RunLengthDecode)); break; } if (!pdf_dict_len(ctx, dp)) pdf_dict_del(ctx, imobj, PDF_NAME(DecodeParms)); buffer = fz_keep_buffer(ctx, cbuffer->buffer); if (image->use_decode) { pdf_obj *ary = pdf_dict_put_array(ctx, imobj, PDF_NAME(Decode), image->n * 2); for (i = 0; i < image->n * 2; ++i) pdf_array_push_real(ctx, ary, image->decode[i]); } } else { unsigned int size; int h; unsigned char *d, *s; raw_or_unknown_compression: /* Currently, set to maintain resolution; should we consider * subsampling here according to desired output res? */ pixmap = fz_get_pixmap_from_image(ctx, image, NULL, NULL, NULL, NULL); n = pixmap->n - pixmap->alpha - pixmap->s; /* number of colorants */ if (n == 0) n = 1; /* treat pixmaps with only alpha or spots as grayscale */ size = image->w * n; h = image->h; s = pixmap->samples; d = fz_malloc(ctx, size * h); buffer = fz_new_buffer_from_data(ctx, d, size * h); if (n == pixmap->n) { /* If we use all channels, we can copy the data as is. */ while (h--) { memcpy(d, s, size); d += size; s += pixmap->stride; } } else { /* Need to remove the alpha and spot planes. */ /* TODO: extract alpha plane to a soft mask. */ /* TODO: convert spots to colors. */ int line_skip = pixmap->stride - pixmap->w * pixmap->n; int skip = pixmap->n - n; while (h--) { int w = pixmap->w; while (w--) { int k; for (k = 0; k < n; ++k) *d++ = *s++; s += skip; } s += line_skip; } } } pdf_dict_put_int(ctx, imobj, PDF_NAME(Width), pixmap ? pixmap->w : image->w); pdf_dict_put_int(ctx, imobj, PDF_NAME(Height), pixmap ? pixmap->h : image->h); if (image->imagemask) { pdf_dict_put_bool(ctx, imobj, PDF_NAME(ImageMask), 1); } else { fz_colorspace *cs; pdf_dict_put_int(ctx, imobj, PDF_NAME(BitsPerComponent), image->bpc); cs = pixmap ? pixmap->colorspace : image->colorspace; switch (fz_colorspace_type(ctx, cs)) { case FZ_COLORSPACE_INDEXED: { fz_colorspace *basecs; unsigned char *lookup = NULL; int high = 0; int basen; pdf_obj *arr; lookup = fz_indexed_colorspace_palette(ctx, cs, &high); basecs = fz_colorspace_base(ctx, cs); basen = fz_colorspace_n(ctx, basecs); arr = pdf_dict_put_array(ctx, imobj, PDF_NAME(ColorSpace), 4); pdf_array_push(ctx, arr, PDF_NAME(Indexed)); switch (fz_colorspace_type(ctx, basecs)) { case FZ_COLORSPACE_GRAY: pdf_array_push(ctx, arr, PDF_NAME(DeviceGray)); break; case FZ_COLORSPACE_RGB: pdf_array_push(ctx, arr, PDF_NAME(DeviceRGB)); break; case FZ_COLORSPACE_CMYK: pdf_array_push(ctx, arr, PDF_NAME(DeviceCMYK)); break; default: // TODO: convert to RGB! fz_throw(ctx, FZ_ERROR_GENERIC, "only indexed Gray, RGB, and CMYK colorspaces supported"); break; } pdf_array_push_int(ctx, arr, high); pdf_array_push_string(ctx, arr, (char *) lookup, basen * (high + 1)); } break; case FZ_COLORSPACE_NONE: case FZ_COLORSPACE_GRAY: pdf_dict_put(ctx, imobj, PDF_NAME(ColorSpace), PDF_NAME(DeviceGray)); break; case FZ_COLORSPACE_RGB: pdf_dict_put(ctx, imobj, PDF_NAME(ColorSpace), PDF_NAME(DeviceRGB)); break; case FZ_COLORSPACE_CMYK: pdf_dict_put(ctx, imobj, PDF_NAME(ColorSpace), PDF_NAME(DeviceCMYK)); break; default: // TODO: convert to RGB! fz_throw(ctx, FZ_ERROR_GENERIC, "only Gray, RGB, and CMYK colorspaces supported"); break; } } if (image->mask) { pdf_dict_put_drop(ctx, imobj, PDF_NAME(SMask), pdf_add_image(ctx, doc, image->mask)); } pdf_update_stream(ctx, doc, imobj, buffer, 1); /* Add ref to our image resource hash table. */ imref = pdf_insert_image_resource(ctx, doc, digest, imobj); } fz_always(ctx) { fz_drop_pixmap(ctx, pixmap); fz_drop_buffer(ctx, buffer); pdf_drop_obj(ctx, imobj); } fz_catch(ctx) fz_rethrow(ctx); return imref; }
int main(int argc, char **argv) { char *filename = argc >= 2 ? argv[1] : ""; pthread_t *thread = NULL; fz_locks_context locks; pthread_mutex_t mutex[FZ_LOCK_MAX]; fz_context *ctx; fz_document *doc; int threads; int i; // Initialize FZ_LOCK_MAX number of non-recursive mutexes. for (i = 0; i < FZ_LOCK_MAX; i++) { if (pthread_mutex_init(&mutex[i], NULL) != 0) fail("pthread_mutex_init()"); } // Initialize the locking structure with function pointers to // the locking functions and to the user data. In this case // the user data is a pointer to the array of mutexes so the // locking functions can find the relevant lock to change when // they are called. This way we avoid global variables. locks.user = mutex; locks.lock = lock_mutex; locks.unlock = unlock_mutex; // This is the main threads context function, so supply the // locking structure. This context will be used to parse all // the pages from the document. ctx = fz_new_context(NULL, &locks, FZ_STORE_UNLIMITED); // Register default file types. fz_register_document_handlers(ctx); // Open the PDF, XPS or CBZ document. Note, this binds doc to ctx. // You must only ever use doc with ctx - never a clone of it! doc = fz_open_document(ctx, filename); // Retrieve the number of pages, which translates to the // number of threads used for rendering pages. threads = fz_count_pages(ctx, doc); fprintf(stderr, "spawning %d threads, one per page...\n", threads); thread = malloc(threads * sizeof (pthread_t)); for (i = 0; i < threads; i++) { fz_page *page; fz_rect bbox; fz_irect rbox; fz_display_list *list; fz_device *dev; fz_pixmap *pix; struct data *data; // Load the relevant page for each thread. Note, that this // cannot be done on the worker threads, as each use of doc // uses ctx, and only one thread can be using ctx at a time. page = fz_load_page(ctx, doc, i); // Compute the bounding box for each page. fz_bound_page(ctx, page, &bbox); // Create a display list that will hold the drawing // commands for the page. Once we have the display list // this can safely be used on any other thread as it is // not bound to a given context. list = fz_new_display_list(ctx); // Run the loaded page through a display list device // to populate the page's display list. dev = fz_new_list_device(ctx, list); fz_run_page(ctx, page, dev, &fz_identity, NULL); fz_drop_device(ctx, dev); // The page is no longer needed, all drawing commands // are now in the display list. fz_drop_page(ctx, page); // Create a white pixmap using the correct dimensions. pix = fz_new_pixmap_with_bbox(ctx, fz_device_rgb(ctx), fz_round_rect(&rbox, &bbox)); fz_clear_pixmap_with_value(ctx, pix, 0xff); // Populate the data structure to be sent to the // rendering thread for this page. data = malloc(sizeof (struct data)); data->pagenumber = i + 1; data->ctx = ctx; data->list = list; data->bbox = bbox; data->pix = pix; // Create the thread and pass it the data structure. if (pthread_create(&thread[i], NULL, renderer, data) != 0) fail("pthread_create()"); } // Now each thread is rendering pages, so wait for each thread // to complete its rendering. fprintf(stderr, "joining %d threads...\n", threads); for (i = threads - 1; i >= 0; i--) { char filename[42]; struct data *data; if (pthread_join(thread[i], (void **) &data) != 0) fail("pthread_join"); sprintf(filename, "out%04d.png", i); fprintf(stderr, "\tSaving %s...\n", filename); // Write the rendered image to a PNG file fz_save_pixmap_as_png(ctx, data->pix, filename, 0); // Free the thread's pixmap and display list since // they were allocated by the main thread above. fz_drop_pixmap(ctx, data->pix); fz_drop_display_list(ctx, data->list); // Free the data structured passed back and forth // between the main thread and rendering thread. free(data); } fprintf(stderr, "finally!\n"); fflush(NULL); free(thread); // Finally the document is closed and the main thread's // context is freed. fz_drop_document(ctx, doc); fz_drop_context(ctx); return 0; }
static fz_pixmap * fz_load_jxr_or_info(fz_context *ctx, unsigned char *data, int size, int *wp, int *hp, int *xresp, int *yresp, fz_colorspace **cspacep) { #ifdef _WIN32 int info_only = wp && hp && xresp && yresp && cspacep; fz_pixmap *pix = NULL; IStream *stream = NULL; IWICImagingFactory *factory = NULL; IWICBitmapDecoder *decoder = NULL; IWICFormatConverter *converter = NULL; IWICBitmapFrameDecode *src_frame = NULL; IWICBitmapSource *src_bitmap = NULL; int codec_available = 0; LARGE_INTEGER zero = { 0 }; UINT width, height; double xres, yres; ULONG written; HRESULT hr; hr = CoInitialize(NULL); if (FAILED(hr)) fz_throw(ctx, "JPEG-XR codec is not available"); #define Check(hr) if (FAILED(hr)) goto CleanUp Check(CoCreateInstance(&CLSID_WICImagingFactory, NULL, CLSCTX_ALL, &IID_IWICImagingFactory, (void **)&factory)); Check(CreateStreamOnHGlobal(NULL, TRUE, &stream)); Check(IStream_Write(stream, data, (ULONG)size, &written)); Check(IStream_Seek(stream, zero, STREAM_SEEK_SET, NULL)); Check(IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, WICDecodeMetadataCacheOnDemand, &decoder)); Check(IWICImagingFactory_CreateFormatConverter(factory, &converter)); Check(IWICBitmapDecoder_GetFrame(decoder, 0, &src_frame)); Check(IUnknown_QueryInterface(src_frame, &IID_IWICBitmapSource, &src_bitmap)); Check(IWICFormatConverter_Initialize(converter, src_bitmap, &GUID_WICPixelFormat32bppBGRA, WICBitmapDitherTypeNone, NULL, 0.f, WICBitmapPaletteTypeCustom)); Check(IWICFormatConverter_GetSize(converter, &width, &height)); Check(IWICFormatConverter_GetResolution(converter, &xres, &yres)); #undef Check codec_available = 1; if (info_only) { *cspacep = fz_device_bgr; *wp = width; *hp = height; *xresp = (int)(xres + 0.5); *yresp = (int)(yres + 0.5); } else { fz_try(ctx) { pix = fz_new_pixmap(ctx, fz_device_bgr, width, height); } fz_catch(ctx) { pix = NULL; goto CleanUp; } hr = IWICFormatConverter_CopyPixels(converter, NULL, pix->w * pix->n, pix->w * pix->h * pix->n, pix->samples); if (FAILED(hr)) { fz_drop_pixmap(ctx, pix); pix = NULL; goto CleanUp; } pix->xres = (int)(xres + 0.5); pix->yres = (int)(yres + 0.5); } CleanUp: #define Release(unk) if (unk) IUnknown_Release(unk) Release(src_bitmap); Release(converter); Release(src_frame); Release(decoder); Release(factory); Release(stream); #undef Release CoUninitialize(); if (codec_available) { if (!pix && !info_only) fz_throw(ctx, "JPEG-XR codec failed to decode the image"); return pix; } #endif fz_throw(ctx, "JPEG-XR codec is not available"); return NULL; }
HRESULT MuPDFDoc::UpdatePage(int pageNumber, unsigned char *bitmap, int x, int y, int width, int height, bool invert) { int index = FindPageInCache(pageNumber); if (index < 0) { //TODO: get rid of this side effect!!! HRESULT result = GotoPage(pageNumber); if (FAILED(result)) { return result; } return DrawPage(bitmap, x, y, width, height, invert); } fz_device *dev = nullptr; fz_pixmap *pixmap = nullptr; fz_var(dev); fz_var(pixmap); PageCache *pageCache = &m_pages[m_currentPage]; fz_try(m_context) { fz_interactive *idoc = fz_interact(m_document); // Call fz_update_page now to ensure future calls yield the // changes from the current state if (idoc) fz_update_page(idoc, pageCache->page); if (!pageCache->pageList) { /* Render to list */ pageCache->pageList = fz_new_display_list(m_context); dev = fz_new_list_device(m_context, pageCache->pageList); fz_run_page_contents(m_document, pageCache->page, dev, fz_identity, nullptr); } if (!pageCache->annotList) { if (dev) { fz_free_device(dev); dev = nullptr; } pageCache->annotList = fz_new_display_list(m_context); dev = fz_new_list_device(m_context, pageCache->annotList); for (fz_annot *annot = fz_first_annot(m_document, pageCache->page); annot; annot = fz_next_annot(m_document, annot)) fz_run_annot(m_document, pageCache->page, annot, dev, fz_identity, nullptr); } fz_bbox rect; rect.x0 = x; rect.y0 = y; rect.x1 = x + width; rect.y1 = y + height; pixmap = fz_new_pixmap_with_bbox_and_data(m_context, fz_device_bgr, rect, bitmap); // fz_matrix ctm = CalcConvertMatrix(); fz_bbox bbox = fz_round_rect(fz_transform_rect(ctm, pageCache->mediaBox)); /* Now, adjust ctm so that it would give the correct page width * heights. */ float xscale = (float)width/(float)(bbox.x1-bbox.x0); float yscale = (float)height/(float)(bbox.y1-bbox.y0); ctm = fz_concat(ctm, fz_scale(xscale, yscale)); bbox = fz_round_rect(fz_transform_rect(ctm, pageCache->mediaBox)); if (dev) { fz_free_device(dev); dev = nullptr; } fz_annot *annot; while (idoc && (annot = fz_poll_changed_annot(idoc, pageCache->page))) { fz_bbox abox = fz_round_rect(fz_transform_rect(ctm, fz_bound_annot(m_document, annot))); abox = fz_intersect_bbox(abox, rect); if (!fz_is_empty_bbox(abox)) { fz_clear_pixmap_rect_with_value(m_context, pixmap, 0xff, abox); dev = fz_new_draw_device_with_bbox(m_context, pixmap, abox); if (pageCache->pageList) fz_run_display_list(pageCache->pageList, dev, ctm, abox, nullptr); if (pageCache->annotList) fz_run_display_list(pageCache->annotList, dev, ctm, abox, nullptr); fz_free_device(dev); dev = nullptr; if (invert) fz_invert_pixmap_rect(pixmap, abox); } } } fz_always(m_context) { if (dev) { fz_free_device(dev); dev = nullptr; } if (pixmap) { fz_drop_pixmap(m_context, pixmap); } } fz_catch(m_context) { return E_FAIL; } return S_OK; }
HRESULT MuPDFDoc::DrawPage(unsigned char *bitmap, int x, int y, int width, int height, bool invert) { m_cts->abort = 0; fz_device *dev = nullptr; fz_pixmap *pixmap = nullptr; fz_var(dev); fz_var(pixmap); PageCache *pageCache = &m_pages[m_currentPage]; fz_try(m_context) { fz_interactive *idoc = fz_interact(m_document); // Call fz_update_page now to ensure future calls yield the // changes from the current state if (idoc) fz_update_page(idoc, pageCache->page); if (!pageCache->pageList) { /* Render to list */ pageCache->pageList = fz_new_display_list(m_context); dev = fz_new_list_device(m_context, pageCache->pageList); fz_run_page_contents(m_document, pageCache->page, dev, fz_identity, *&m_cts); } if (!pageCache->annotList) { if (dev) { fz_free_device(dev); dev = nullptr; } pageCache->annotList = fz_new_display_list(m_context); dev = fz_new_list_device(m_context, pageCache->annotList); for (fz_annot *annot = fz_first_annot(m_document, pageCache->page); annot; annot = fz_next_annot(m_document, annot)) fz_run_annot(m_document, pageCache->page, annot, dev, fz_identity, *&m_cts); } fz_bbox rect; rect.x0 = x; rect.y0 = y; rect.x1 = x + width; rect.y1 = y + height; pixmap = fz_new_pixmap_with_bbox_and_data(m_context, fz_device_bgr, rect, bitmap); if (!pageCache->pageList && !pageCache->annotList) { fz_clear_pixmap_with_value(m_context, pixmap, 0xd0); break; } fz_clear_pixmap_with_value(m_context, pixmap, 0xff); // fz_matrix ctm = CalcConvertMatrix(); fz_bbox bbox = fz_round_rect(fz_transform_rect(ctm, pageCache->mediaBox)); /* Now, adjust ctm so that it would give the correct page width * heights. */ float xscale = (float)width/(float)(bbox.x1-bbox.x0); float yscale = (float)height/(float)(bbox.y1-bbox.y0); ctm = fz_concat(ctm, fz_scale(xscale, yscale)); bbox = fz_round_rect(fz_transform_rect(ctm, pageCache->mediaBox)); if (dev) { fz_free_device(dev); dev = nullptr; } dev = fz_new_draw_device(m_context, pixmap); if (pageCache->pageList) fz_run_display_list(pageCache->pageList, dev, ctm, bbox, *&m_cts); about = m_cts->abort; if (pageCache->annotList) fz_run_display_list(pageCache->annotList, dev, ctm, bbox, *&m_cts); if (invert) fz_invert_pixmap(m_context, pixmap); } fz_always(m_context) { if (dev) { fz_free_device(dev); dev = nullptr; } if (pixmap) { fz_drop_pixmap(m_context, pixmap); } } fz_catch(m_context) { return E_FAIL; } return S_OK; }
HRESULT MuPDFDoc::Renderer(Data *data, int part, int numParts) { if (m_cts->abort == 1) return S_OK; int pagenumber = data->pagenumber; fz_context *ctx = data->ctx; fz_display_list *list = data->list; fz_display_list *annotList = data->annotList; fz_rect rect = data->rect; fz_pixmap *pix = data->pix; fz_device *dev = nullptr; int width = data->width; int height = data->height / numParts; // The context pointer is pointing to the main thread's // context, so here we create a new context based on it for // use in this thread. ctx = fz_clone_context(ctx); fz_try(ctx) { if (part == 1 && numParts == 2) { rect.y1 = rect.y1/2; } if (part == 2 && numParts == 2) { rect.y0 = rect.y1/2; } fz_matrix ctm = CalcConvertMatrix(); fz_bbox bbox = fz_round_rect(fz_transform_rect(ctm, rect)); /* Now, adjust ctm so that it would give the correct page width * heights. */ float xscale = (float)width/(float)(bbox.x1-bbox.x0); float yscale = (float)height/(float)(bbox.y1-bbox.y0); ctm = fz_concat(ctm, fz_scale(xscale, yscale)); bbox = fz_round_rect(fz_transform_rect(ctm, rect)); dev = fz_new_draw_device(ctx, pix); if (list) fz_run_display_list(list, dev, ctm, bbox, *&m_cts); if (m_cts->abort == 1) break; if (annotList) fz_run_display_list(annotList, dev, ctm, bbox, *&m_cts); } fz_always(ctx) { if (dev) { fz_free_device(dev); dev = nullptr; } if (pix) { fz_drop_pixmap(m_context, pix); } } fz_catch(ctx) { return E_FAIL; } fz_free_context(ctx); return S_OK; }
fz_pixmap * fz_load_jpx(fz_context *ctx, unsigned char *data, int size, fz_colorspace *defcs, int indexed) { fz_pixmap *img; fz_colorspace *origcs; opj_dparameters_t params; opj_codec_t *codec; opj_image_t *jpx; opj_stream_t *stream; fz_colorspace *colorspace; unsigned char *p; OPJ_CODEC_FORMAT format; int a, n, w, h, depth, sgnd; int x, y, k, v; stream_block sb; if (size < 2) fz_throw(ctx, FZ_ERROR_GENERIC, "not enough data to determine image format"); /* Check for SOC marker -- if found we have a bare J2K stream */ if (data[0] == 0xFF && data[1] == 0x4F) format = OPJ_CODEC_J2K; else format = OPJ_CODEC_JP2; opj_set_default_decoder_parameters(¶ms); if (indexed) params.flags |= OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG; codec = opj_create_decompress(format); opj_set_info_handler(codec, fz_opj_info_callback, ctx); opj_set_warning_handler(codec, fz_opj_warning_callback, ctx); opj_set_error_handler(codec, fz_opj_error_callback, ctx); if (!opj_setup_decoder(codec, ¶ms)) { fz_throw(ctx, FZ_ERROR_GENERIC, "j2k decode failed"); } stream = opj_stream_default_create(OPJ_TRUE); sb.data = data; sb.pos = 0; sb.size = size; opj_stream_set_read_function(stream, fz_opj_stream_read); opj_stream_set_skip_function(stream, fz_opj_stream_skip); opj_stream_set_seek_function(stream, fz_opj_stream_seek); opj_stream_set_user_data(stream, &sb); /* Set the length to avoid an assert */ opj_stream_set_user_data_length(stream, size); if (!opj_read_header(stream, codec, &jpx)) { opj_stream_destroy(stream); opj_destroy_codec(codec); fz_throw(ctx, FZ_ERROR_GENERIC, "Failed to read JPX header"); } if (!opj_decode(codec, stream, jpx)) { opj_stream_destroy(stream); opj_destroy_codec(codec); opj_image_destroy(jpx); fz_throw(ctx, FZ_ERROR_GENERIC, "Failed to decode JPX image"); } opj_stream_destroy(stream); opj_destroy_codec(codec); /* jpx should never be NULL here, but check anyway */ if (!jpx) fz_throw(ctx, FZ_ERROR_GENERIC, "opj_decode failed"); for (k = 1; k < (int)jpx->numcomps; k++) { if (!jpx->comps[k].data) { opj_image_destroy(jpx); fz_throw(ctx, FZ_ERROR_GENERIC, "image components are missing data"); } if (jpx->comps[k].w != jpx->comps[0].w) { opj_image_destroy(jpx); fz_throw(ctx, FZ_ERROR_GENERIC, "image components have different width"); } if (jpx->comps[k].h != jpx->comps[0].h) { opj_image_destroy(jpx); fz_throw(ctx, FZ_ERROR_GENERIC, "image components have different height"); } if (jpx->comps[k].prec != jpx->comps[0].prec) { opj_image_destroy(jpx); fz_throw(ctx, FZ_ERROR_GENERIC, "image components have different precision"); } } n = jpx->numcomps; w = jpx->comps[0].w; h = jpx->comps[0].h; depth = jpx->comps[0].prec; sgnd = jpx->comps[0].sgnd; if (jpx->color_space == OPJ_CLRSPC_SRGB && n == 4) { n = 3; a = 1; } else if (jpx->color_space == OPJ_CLRSPC_SYCC && n == 4) { n = 3; a = 1; } else if (n == 2) { n = 1; a = 1; } else if (n > 4) { n = 4; a = 1; } else { a = 0; } origcs = defcs; if (defcs) { if (defcs->n == n) { colorspace = defcs; } else { fz_warn(ctx, "jpx file and dict colorspaces do not match"); defcs = NULL; } } if (!defcs) { switch (n) { case 1: colorspace = fz_device_gray(ctx); break; case 3: colorspace = fz_device_rgb(ctx); break; case 4: colorspace = fz_device_cmyk(ctx); break; } } fz_try(ctx) { img = fz_new_pixmap(ctx, colorspace, w, h); } fz_catch(ctx) { opj_image_destroy(jpx); fz_rethrow_message(ctx, "out of memory loading jpx"); } p = img->samples; for (y = 0; y < h; y++) { for (x = 0; x < w; x++) { for (k = 0; k < n + a; k++) { v = jpx->comps[k].data[y * w + x]; if (sgnd) v = v + (1 << (depth - 1)); if (depth > 8) v = v >> (depth - 8); *p++ = v; } if (!a) *p++ = 255; } } opj_image_destroy(jpx); if (a) { if (n == 4) { fz_pixmap *tmp = fz_new_pixmap(ctx, fz_device_rgb(ctx), w, h); fz_convert_pixmap(ctx, tmp, img); fz_drop_pixmap(ctx, img); img = tmp; } fz_premultiply_pixmap(ctx, img); } if (origcs != defcs) { fz_pixmap *tmp = fz_new_pixmap(ctx, origcs, w, h); fz_convert_pixmap(ctx, tmp, img); fz_drop_pixmap(ctx, img); img = tmp; } return img; }
int main(int argc, char **argv) { char *input; float zoom, rotate; int page_number, page_count; fz_context *ctx; fz_document *doc; fz_pixmap *pix; fz_matrix ctm; int x, y; if (argc < 3) { fprintf(stderr, "usage: example input-file page-number [ zoom [ rotate ] ]\n"); fprintf(stderr, "\tinput-file: path of PDF, XPS, CBZ or EPUB document to open\n"); fprintf(stderr, "\tPage numbering starts from one.\n"); fprintf(stderr, "\tZoom level is in percent (100 percent is 72 dpi).\n"); fprintf(stderr, "\tRotation is in degrees clockwise.\n"); return EXIT_FAILURE; } input = argv[1]; page_number = atoi(argv[2]) - 1; zoom = argc > 3 ? atof(argv[3]) : 100; rotate = argc > 4 ? atof(argv[4]) : 0; /* Create a context to hold the exception stack and various caches. */ ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED); if (!ctx) { fprintf(stderr, "cannot create mupdf context\n"); return EXIT_FAILURE; } /* Register the default file types to handle. */ fz_try(ctx) fz_register_document_handlers(ctx); fz_catch(ctx) { fprintf(stderr, "cannot register document handlers: %s\n", fz_caught_message(ctx)); fz_drop_context(ctx); return EXIT_FAILURE; } /* Open the document. */ fz_try(ctx) doc = fz_open_document(ctx, input); fz_catch(ctx) { fprintf(stderr, "cannot open document: %s\n", fz_caught_message(ctx)); fz_drop_context(ctx); return EXIT_FAILURE; } /* Count the number of pages. */ fz_try(ctx) page_count = fz_count_pages(ctx, doc); fz_catch(ctx) { fprintf(stderr, "cannot count number of pages: %s\n", fz_caught_message(ctx)); fz_drop_document(ctx, doc); fz_drop_context(ctx); return EXIT_FAILURE; } if (page_number < 0 || page_number >= page_count) { fprintf(stderr, "page number out of range: %d (page count %d)\n", page_number + 1, page_count); fz_drop_document(ctx, doc); fz_drop_context(ctx); return EXIT_FAILURE; } /* Compute a transformation matrix for the zoom and rotation desired. */ /* The default resolution without scaling is 72 dpi. */ fz_scale(&ctm, zoom / 100, zoom / 100); fz_pre_rotate(&ctm, rotate); /* Render page to an RGB pixmap. */ fz_try(ctx) pix = fz_new_pixmap_from_page_number(ctx, doc, page_number, &ctm, fz_device_rgb(ctx), 0); fz_catch(ctx) { fprintf(stderr, "cannot render page: %s\n", fz_caught_message(ctx)); fz_drop_document(ctx, doc); fz_drop_context(ctx); return EXIT_FAILURE; } /* Print image data in ascii PPM format. */ printf("P3\n"); printf("%d %d\n", pix->w, pix->h); printf("255\n"); for (y = 0; y < pix->h; ++y) { unsigned char *p = &pix->samples[y * pix->stride]; for (x = 0; x < pix->w; ++x) { if (x > 0) printf(" "); printf("%3d %3d %3d", p[0], p[1], p[2]); p += pix->n; } printf("\n"); } /* Clean up. */ fz_drop_pixmap(ctx, pix); fz_drop_document(ctx, doc); fz_drop_context(ctx); return EXIT_SUCCESS; }
static void drawpage(fz_context *ctx, fz_document *doc, int pagenum) { fz_page *page; fz_display_list *list = NULL; fz_device *dev = NULL; int start; fz_cookie cookie = { 0 }; int needshot = 0; fz_var(list); fz_var(dev); if (showtime) { start = gettime(); } fz_try(ctx) { page = fz_load_page(doc, pagenum - 1); } fz_catch(ctx) { fz_throw(ctx, "cannot load page %d in file '%s'", pagenum, filename); } if (mujstest_file) { fz_interactive *inter = fz_interact(doc); fz_widget *widget = NULL; if (inter) widget = fz_first_widget(inter, page); if (widget) { fprintf(mujstest_file, "GOTO %d\n", pagenum); needshot = 1; } for (;widget; widget = fz_next_widget(inter, widget)) { fz_rect rect = *fz_widget_bbox(widget); int w = (rect.x1-rect.x0); int h = (rect.y1-rect.y0); int len; int type = fz_widget_get_type(widget); ++mujstest_count; switch (type) { default: fprintf(mujstest_file, "%% UNKNOWN %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); break; case FZ_WIDGET_TYPE_PUSHBUTTON: fprintf(mujstest_file, "%% PUSHBUTTON %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); break; case FZ_WIDGET_TYPE_CHECKBOX: fprintf(mujstest_file, "%% CHECKBOX %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); break; case FZ_WIDGET_TYPE_RADIOBUTTON: fprintf(mujstest_file, "%% RADIOBUTTON %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); break; case FZ_WIDGET_TYPE_TEXT: { int maxlen = fz_text_widget_max_len(inter, widget); int texttype = fz_text_widget_content_type(inter, widget); /* If height is low, assume a single row, and base * the width off that. */ if (h < 10) { w = (w+h-1) / (h ? h : 1); h = 1; } /* Otherwise, if width is low, work off height */ else if (w < 10) { h = (w+h-1) / (w ? w : 1); w = 1; } else { w = (w+9)/10; h = (h+9)/10; } len = w*h; if (len < 2) len = 2; if (len > maxlen) len = maxlen; fprintf(mujstest_file, "%% TEXT %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); switch (texttype) { default: case FZ_WIDGET_CONTENT_UNRESTRAINED: fprintf(mujstest_file, "TEXT %d ", mujstest_count); escape_string(mujstest_file, len-3, lorem); fprintf(mujstest_file, "\n"); break; case FZ_WIDGET_CONTENT_NUMBER: fprintf(mujstest_file, "TEXT %d\n", mujstest_count); break; case FZ_WIDGET_CONTENT_SPECIAL: fprintf(mujstest_file, "TEXT %lld\n", 46702919800LL + mujstest_count); break; case FZ_WIDGET_CONTENT_DATE: fprintf(mujstest_file, "TEXT Jun %d 1979\n", 1 + ((13 + mujstest_count) % 30)); break; case FZ_WIDGET_CONTENT_TIME: ++mujstest_count; fprintf(mujstest_file, "TEXT %02d:%02d\n", ((mujstest_count/60) % 24), mujstest_count % 60); break; } break; } case FZ_WIDGET_TYPE_LISTBOX: fprintf(mujstest_file, "%% LISTBOX %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); break; case FZ_WIDGET_TYPE_COMBOBOX: fprintf(mujstest_file, "%% COMBOBOX %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1); break; } fprintf(mujstest_file, "CLICK %0.2f %0.2f\n", (rect.x0+rect.x1)/2, (rect.y0+rect.y1)/2); } } if (uselist) { fz_try(ctx) { list = fz_new_display_list(ctx); dev = fz_new_list_device(ctx, list); fz_run_page(doc, page, dev, fz_identity, &cookie); } fz_always(ctx) { fz_free_device(dev); dev = NULL; } fz_catch(ctx) { fz_free_display_list(ctx, list); fz_free_page(doc, page); fz_throw(ctx, "cannot draw page %d in file '%s'", pagenum, filename); } } if (showxml) { fz_try(ctx) { dev = fz_new_trace_device(ctx); printf("<page number=\"%d\">\n", pagenum); if (list) fz_run_display_list(list, dev, fz_identity, fz_infinite_bbox, &cookie); else fz_run_page(doc, page, dev, fz_identity, &cookie); printf("</page>\n"); } fz_always(ctx) { fz_free_device(dev); dev = NULL; } fz_catch(ctx) { fz_free_display_list(ctx, list); fz_free_page(doc, page); fz_rethrow(ctx); } } if (showtext) { fz_text_page *text = NULL; fz_var(text); fz_try(ctx) { text = fz_new_text_page(ctx, fz_bound_page(doc, page)); dev = fz_new_text_device(ctx, sheet, text); if (list) fz_run_display_list(list, dev, fz_identity, fz_infinite_bbox, &cookie); else fz_run_page(doc, page, dev, fz_identity, &cookie); fz_free_device(dev); dev = NULL; if (showtext == TEXT_XML) { fz_print_text_page_xml(ctx, stdout, text); } else if (showtext == TEXT_HTML) { fz_print_text_page_html(ctx, stdout, text); } else if (showtext == TEXT_PLAIN) { fz_print_text_page(ctx, stdout, text); printf("\f\n"); } } fz_always(ctx) { fz_free_device(dev); dev = NULL; fz_free_text_page(ctx, text); } fz_catch(ctx) { fz_free_display_list(ctx, list); fz_free_page(doc, page); fz_rethrow(ctx); } } if (showmd5 || showtime) printf("page %s %d", filename, pagenum); #ifdef GDI_PLUS_BMP_RENDERER // hack: use -G0 to "enable GDI+" when saving as TGA if (output && (strstr(output, ".bmp") || strstr(output, ".tga") && !gamma_value)) drawbmp(ctx, doc, page, list, pagenum); else #endif if (output || showmd5 || showtime) { float zoom; fz_matrix ctm; fz_rect bounds, bounds2; fz_bbox bbox; fz_pixmap *pix = NULL; int w, h; fz_var(pix); bounds = fz_bound_page(doc, page); zoom = resolution / 72; ctm = fz_scale(zoom, zoom); ctm = fz_concat(ctm, fz_rotate(rotation)); bounds2 = fz_transform_rect(ctm, bounds); bbox = fz_round_rect(bounds2); /* Make local copies of our width/height */ w = width; h = height; /* If a resolution is specified, check to see whether w/h are * exceeded; if not, unset them. */ if (res_specified) { int t; t = bbox.x1 - bbox.x0; if (w && t <= w) w = 0; t = bbox.y1 - bbox.y0; if (h && t <= h) h = 0; } /* Now w or h will be 0 unless then need to be enforced. */ if (w || h) { float scalex = w/(bounds2.x1-bounds2.x0); float scaley = h/(bounds2.y1-bounds2.y0); if (fit) { if (w == 0) scalex = 1.0f; if (h == 0) scaley = 1.0f; } else { if (w == 0) scalex = scaley; if (h == 0) scaley = scalex; } if (!fit) { if (scalex > scaley) scalex = scaley; else scaley = scalex; } ctm = fz_concat(ctm, fz_scale(scalex, scaley)); bounds2 = fz_transform_rect(ctm, bounds); } bbox = fz_round_rect(bounds2); /* TODO: banded rendering and multi-page ppm */ fz_try(ctx) { pix = fz_new_pixmap_with_bbox(ctx, colorspace, bbox); if (savealpha) fz_clear_pixmap(ctx, pix); else fz_clear_pixmap_with_value(ctx, pix, 255); dev = fz_new_draw_device(ctx, pix); if (list) fz_run_display_list(list, dev, ctm, bbox, &cookie); else fz_run_page(doc, page, dev, ctm, &cookie); fz_free_device(dev); dev = NULL; if (invert) fz_invert_pixmap(ctx, pix); if (gamma_value != 1) fz_gamma_pixmap(ctx, pix, gamma_value); if (savealpha) fz_unmultiply_pixmap(ctx, pix); if (output) { char buf[512]; sprintf(buf, output, pagenum); if (strstr(output, ".pgm") || strstr(output, ".ppm") || strstr(output, ".pnm")) fz_write_pnm(ctx, pix, buf); else if (strstr(output, ".pam")) fz_write_pam(ctx, pix, buf, savealpha); else if (strstr(output, ".png")) fz_write_png(ctx, pix, buf, savealpha); else if (strstr(output, ".pbm")) { fz_bitmap *bit = fz_halftone_pixmap(ctx, pix, NULL); fz_write_pbm(ctx, bit, buf); fz_drop_bitmap(ctx, bit); } /* SumatraPDF: support TGA as output format */ else if (strstr(output, ".tga")) fz_write_tga(ctx, pix, buf, savealpha); } if (showmd5) { unsigned char digest[16]; int i; fz_md5_pixmap(pix, digest); printf(" "); for (i = 0; i < 16; i++) printf("%02x", digest[i]); } } fz_always(ctx) { fz_free_device(dev); dev = NULL; fz_drop_pixmap(ctx, pix); } fz_catch(ctx) { fz_free_display_list(ctx, list); fz_free_page(doc, page); fz_rethrow(ctx); } }
static void drawbmp(fz_context *ctx, fz_document *doc, fz_page *page, fz_display_list *list, int pagenum) { float zoom; fz_matrix ctm; fz_bbox bbox; fz_rect bounds, bounds2; int w, h; fz_device *dev; HDC dc, dc_main; RECT rc; HBRUSH bg_brush; HBITMAP hbmp; BITMAPINFO bmi = { 0 }; int bmp_data_len; char *bmp_data; bounds = fz_bound_page(doc, page); zoom = resolution / 72; ctm = fz_scale(zoom, zoom); ctm = fz_concat(ctm, fz_rotate(rotation)); bounds2 = fz_transform_rect(ctm, bounds); w = width; h = height; if (res_specified) { bbox = fz_round_rect(bounds2); if (w && bbox.x1 - bbox.x0 <= w) w = 0; if (h && bbox.y1 - bbox.y0 <= h) h = 0; } if (w || h) { float scalex = w / (bounds2.x1 - bounds2.x0); float scaley = h / (bounds2.y1 - bounds2.y0); if (w == 0) scalex = fit ? 1.0f : scaley; if (h == 0) scaley = fit ? 1.0f : scalex; if (!fit) scalex = scaley = min(scalex, scaley); ctm = fz_concat(ctm, fz_scale(scalex, scaley)); bounds2 = fz_transform_rect(ctm, bounds); } bbox = fz_round_rect(bounds2); w = bbox.x1 - bbox.x0; h = bbox.y1 - bbox.y0; dc_main = GetDC(NULL); dc = CreateCompatibleDC(dc_main); hbmp = CreateCompatibleBitmap(dc_main, w, h); DeleteObject(SelectObject(dc, hbmp)); SetRect(&rc, 0, 0, w, h); bg_brush = CreateSolidBrush(RGB(0xFF,0xFF,0xFF)); FillRect(dc, &rc, bg_brush); DeleteObject(bg_brush); dev = fz_new_gdiplus_device(ctx, dc, bbox); if (list) fz_run_display_list(list, dev, ctm, bbox, NULL); else fz_run_page(doc, page, dev, ctm, NULL); fz_free_device(dev); bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader); bmi.bmiHeader.biWidth = w; bmi.bmiHeader.biHeight = h; bmi.bmiHeader.biPlanes = 1; bmi.bmiHeader.biBitCount = 24; bmi.bmiHeader.biCompression = BI_RGB; bmp_data_len = ((w * 3 + 3) / 4) * 4 * h; bmp_data = fz_malloc(ctx, bmp_data_len + 1); if (!GetDIBits(dc, hbmp, 0, h, bmp_data, &bmi, DIB_RGB_COLORS)) fz_throw(ctx, "cannot draw page %d in PDF file '%s'", pagenum, filename); DeleteDC(dc); ReleaseDC(NULL, dc_main); DeleteObject(hbmp); if (output) { char buf[512]; FILE *f; sprintf(buf, output, pagenum); f = fopen(buf, "wb"); if (!f) fz_throw(ctx, "could not create raster file '%s'", buf); if (strstr(output, ".bmp")) { BITMAPFILEHEADER bmpfh = { 0 }; static const int one = 1; if (!*(char *)&one) fz_throw(ctx, "rendering to BMP is not supported on big-endian architectures"); bmpfh.bfType = MAKEWORD('B', 'M'); bmpfh.bfOffBits = sizeof(bmpfh) + sizeof(bmi); bmpfh.bfSize = bmpfh.bfOffBits + bmp_data_len; fwrite(&bmpfh, sizeof(bmpfh), 1, f); fwrite(&bmi, sizeof(bmi), 1, f); fwrite(bmp_data, 1, bmp_data_len, f); } else { unsigned short width = w, height = h, k; fwrite("\0\0\x0A\0\0\0\0\0\0\0\0\0", 1, 12, f); putc(width & 0xFF, f); putc((width >> 8) & 0xFF, f); putc(height & 0xFF, f); putc((height >> 8) & 0xFF, f); fwrite("\x18\0", 1, 2, f); for (k = 0; k < height; k++) { int i, j; char *line = bmp_data + bmp_data_len / h * k; for (i = 0, j = 1; i < width; i += j, j = 1) { #define memeq3(a, b) (*(WORD *)(a) == *(WORD *)(b) && (a)[2] == (b)[2]) for (; i + j < width && j < 128 && memeq3(line + i * 3, line + (i + j) * 3); j++); if (j > 1) { putc(j - 1 + 128, f); fwrite(line + i * 3, 1, 3, f); } else { for (; i + j < width && j < 128 && !memeq3(line + (i + j - 1) * 3, line + (i + j) * 3) != 0; j++); putc(j - 1, f); fwrite(line + i * 3, 1, j * 3, f); } #undef memeq3 } } fwrite("\0\0\0\0\0\0\0\0TRUEVISION-XFILE.\0", 1, 26, f); } fclose(f); } if (showmd5) { fz_pixmap *pix = fz_new_pixmap_with_data(ctx, fz_device_rgb, bmp_data_len / 4 / h, h, bmp_data); unsigned char digest[16]; int i; fz_md5_pixmap(pix, digest); printf(" "); for (i = 0; i < 16; i++) printf("%02x", digest[i]); fz_drop_pixmap(ctx, pix); } fz_free(ctx, bmp_data); }