Mercurial > hg > xemacs-beta
diff src/glyphs-x.c @ 290:c9fe270a4101 r21-0b43
Import from CVS: tag r21-0b43
author | cvs |
---|---|
date | Mon, 13 Aug 2007 10:36:47 +0200 |
parents | e11d67e05968 |
children | 70ad99077275 |
line wrap: on
line diff
--- a/src/glyphs-x.c Mon Aug 13 10:35:55 2007 +0200 +++ b/src/glyphs-x.c Mon Aug 13 10:36:47 2007 +0200 @@ -61,26 +61,12 @@ #include "sysfile.h" -#ifdef HAVE_PNG -#ifdef __cplusplus -extern "C" { -#endif -#include <png.h> -#ifdef __cplusplus -} -#endif -#else #include <setjmp.h> -#endif + #ifdef FILE_CODING #include "file-coding.h" #endif -#undef HAVE_PNG -#undef HAVE_TIFF -#undef HAVE_JPEG -#undef HAVE_GIF - #if INTBITS == 32 # define FOUR_BYTE_TYPE unsigned int #elif LONGBITS == 32 @@ -98,26 +84,6 @@ Lisp_Object Qxface; #endif -#ifdef HAVE_TIFF -DEFINE_IMAGE_INSTANTIATOR_FORMAT (tiff); -Lisp_Object Qtiff; -#endif - -#ifdef HAVE_JPEG -DEFINE_IMAGE_INSTANTIATOR_FORMAT (jpeg); -Lisp_Object Qjpeg; -#endif - -#ifdef HAVE_GIF -DEFINE_IMAGE_INSTANTIATOR_FORMAT (gif); -Lisp_Object Qgif; -#endif - -#ifdef HAVE_PNG -DEFINE_IMAGE_INSTANTIATOR_FORMAT (png); -Lisp_Object Qpng; -#endif - DEFINE_IMAGE_INSTANTIATOR_FORMAT (cursor_font); Lisp_Object Qcursor_font; @@ -1499,1792 +1465,6 @@ #endif /* HAVE_XPM */ -#ifdef HAVE_JPEG - -/********************************************************************** - * JPEG * - **********************************************************************/ - -#ifdef __cplusplus -extern "C" { -#endif -#include <jpeglib.h> -#include <jerror.h> -#ifdef __cplusplus -} -#endif - -/*#define USE_TEMP_FILES_FOR_JPEG_IMAGES 1*/ -static void -jpeg_validate (Lisp_Object instantiator) -{ - file_or_data_must_be_present (instantiator); -} - -static Lisp_Object -jpeg_normalize (Lisp_Object inst, Lisp_Object console_type) -{ - return simple_image_type_normalize (inst, console_type, Qjpeg); -} - -static int -jpeg_possible_dest_types (void) -{ - return IMAGE_COLOR_PIXMAP_MASK; -} - -/* To survive the otherwise baffling complexity of making sure - everything gets cleaned up in the presence of an error, we - use an unwind_protect(). */ - -struct jpeg_unwind_data -{ - Display *dpy; - Colormap cmap; - /* Stream that we need to close */ - FILE *instream; - /* Object that holds state info for JPEG decoding */ - struct jpeg_decompress_struct *cinfo_ptr; - /* EImage data */ - unsigned char *eimage; - /* Pixels to keep around while the image is active */ - unsigned long *pixels; - int npixels, pixcount; - /* Client-side image structure */ - XImage *ximage; - /* Tempfile to remove */ -#ifdef USE_TEMP_FILES_FOR_JPEG_IMAGES - char tempfile[50]; - int tempfile_needs_to_be_removed; -#endif -}; - -static Lisp_Object -jpeg_instantiate_unwind (Lisp_Object unwind_obj) -{ - struct jpeg_unwind_data *data = - (struct jpeg_unwind_data *) get_opaque_ptr (unwind_obj); - - free_opaque_ptr (unwind_obj); - if (data->cinfo_ptr) - jpeg_destroy_decompress (data->cinfo_ptr); - - if (data->instream) - fclose (data->instream); - - if (data->eimage) xfree (data->eimage); - - if (data->npixels > 0) - XFreeColors (data->dpy, data->cmap, data->pixels, data->npixels, 0L); - if (data->pixcount) - xfree (data->pixels); - - if (data->ximage) - { - if (data->ximage->data) - { - xfree (data->ximage->data); - data->ximage->data = 0; - } - XDestroyImage (data->ximage); - } -#if USE_TEMP_FILES_FOR_JPEG_IMAGES - if (data->tempfile_needs_to_be_removed) - unlink (data->tempfile); -#endif - - return Qnil; -} - -/* - * ERROR HANDLING: - * - * The JPEG library's standard error handler (jerror.c) is divided into - * several "methods" which you can override individually. This lets you - * adjust the behavior without duplicating a lot of code, which you might - * have to update with each future release. - * - * Our example here shows how to override the "error_exit" method so that - * control is returned to the library's caller when a fatal error occurs, - * rather than calling exit() as the standard error_exit method does. - * - * We use C's setjmp/longjmp facility to return control. This means that the - * routine which calls the JPEG library must first execute a setjmp() call to - * establish the return point. We want the replacement error_exit to do a - * longjmp(). But we need to make the setjmp buffer accessible to the - * error_exit routine. To do this, we make a private extension of the - * standard JPEG error handler object. (If we were using C++, we'd say we - * were making a subclass of the regular error handler.) - * - * Here's the extended error handler struct: - */ - -struct my_jpeg_error_mgr -{ - struct jpeg_error_mgr pub; /* "public" fields */ - jmp_buf setjmp_buffer; /* for return to caller */ -}; - -#if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) -METHODDEF(void) -#else -METHODDEF void -#endif -our_init_source (j_decompress_ptr cinfo) -{ -} - -#if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) -METHODDEF(boolean) -#else -METHODDEF boolean -#endif -our_fill_input_buffer (j_decompress_ptr cinfo) -{ - /* Insert a fake EOI marker */ - struct jpeg_source_mgr *src = cinfo->src; - static JOCTET buffer[2]; - - buffer[0] = (JOCTET) 0xFF; - buffer[1] = (JOCTET) JPEG_EOI; - - src->next_input_byte = buffer; - src->bytes_in_buffer = 2; - return TRUE; -} - -#if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) -METHODDEF(void) -#else -METHODDEF void -#endif -our_skip_input_data (j_decompress_ptr cinfo, long num_bytes) -{ - struct jpeg_source_mgr *src = NULL; - - src = (struct jpeg_source_mgr *) cinfo->src; - - if (!src) - { - return; - } else if (num_bytes > src->bytes_in_buffer) - { - ERREXIT(cinfo, JERR_INPUT_EOF); - /*NOTREACHED*/ - } - - src->bytes_in_buffer -= num_bytes; - src->next_input_byte += num_bytes; -} - -#if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) -METHODDEF(void) -#else -METHODDEF void -#endif -our_term_source (j_decompress_ptr cinfo) -{ -} - -typedef struct -{ - struct jpeg_source_mgr pub; -} our_jpeg_source_mgr; - -static void -jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, unsigned int len) -{ - struct jpeg_source_mgr *src; - - if (cinfo->src == NULL) - { /* first time for this JPEG object? */ - cinfo->src = (struct jpeg_source_mgr *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - sizeof(our_jpeg_source_mgr)); - src = (struct jpeg_source_mgr *) cinfo->src; - src->next_input_byte = data; - } - src = (struct jpeg_source_mgr *) cinfo->src; - src->init_source = our_init_source; - src->fill_input_buffer = our_fill_input_buffer; - src->skip_input_data = our_skip_input_data; - src->resync_to_restart = jpeg_resync_to_restart; /* use default method */ - src->term_source = our_term_source; - src->bytes_in_buffer = len; - src->next_input_byte = data; -} - -#if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) -METHODDEF(void) -#else -METHODDEF void -#endif -my_jpeg_error_exit (j_common_ptr cinfo) -{ - /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */ - struct my_jpeg_error_mgr *myerr = (struct my_jpeg_error_mgr *) cinfo->err; - - /* Return control to the setjmp point */ - longjmp (myerr->setjmp_buffer, 1); -} - -#if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) -METHODDEF(void) -#else -METHODDEF void -#endif -my_jpeg_output_message (j_common_ptr cinfo) -{ - char buffer[JMSG_LENGTH_MAX]; - - /* Create the message */ - (*cinfo->err->format_message) (cinfo, buffer); - warn_when_safe (Qjpeg, Qinfo, "%s", buffer); -} - -/* The code in this routine is based on example.c from the JPEG library - source code and from gif_instantiate() */ -static void -jpeg_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, - Lisp_Object pointer_fg, Lisp_Object pointer_bg, - int dest_mask, Lisp_Object domain) -{ - struct Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); - Lisp_Object device = IMAGE_INSTANCE_DEVICE (ii); - Display *dpy; - Colormap cmap; - Visual *vis; - /* It is OK for the unwind data to be local to this function, - because the unwind-protect is always executed when this - stack frame is still valid. */ - struct jpeg_unwind_data unwind; - int speccount = specpdl_depth (); - - /* This struct contains the JPEG decompression parameters and pointers to - * working space (which is allocated as needed by the JPEG library). - */ - struct jpeg_decompress_struct cinfo; - /* We use our private extension JPEG error handler. - * Note that this struct must live as long as the main JPEG parameter - * struct, to avoid dangling-pointer problems. - */ - struct my_jpeg_error_mgr jerr; - - if (!DEVICE_X_P (XDEVICE (device))) - signal_simple_error ("Not an X device", device); - - dpy = DEVICE_X_DISPLAY (XDEVICE (device)); - cmap = DEVICE_X_COLORMAP (XDEVICE(device)); - vis = DEVICE_X_VISUAL (XDEVICE(device)); - - /* Step -1: First record our unwind-protect, which will clean up after - any exit, normal or not */ - - xzero (unwind); - unwind.dpy = dpy; - unwind.cmap = cmap; - record_unwind_protect (jpeg_instantiate_unwind, make_opaque_ptr (&unwind)); - -#ifdef USE_TEMP_FILES_FOR_JPEG_IMAGES - /* Step 0: Write out to a temp file. - - The JPEG routines require you to read from a file unless - you provide your own special input handlers, which I don't - feel like doing. */ - { - Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); - - assert (!NILP (data)); - - write_lisp_string_to_temp_file (data, unwind.tempfile); - unwind.tempfile_needs_to_be_removed = 1; - - /* VERY IMPORTANT: use "b" option to fopen() if you are on a machine that - * requires it in order to read binary files. - */ - - if ((unwind.instream = fopen (unwind.tempfile, "r")) == NULL) - report_file_error ("Opening JPEG temp file", - list1 (build_string (unwind.tempfile))); - } -#endif - - /* Step 1: allocate and initialize JPEG decompression object */ - - /* We set up the normal JPEG error routines, then override error_exit. */ - cinfo.err = jpeg_std_error (&jerr.pub); - jerr.pub.error_exit = my_jpeg_error_exit; - jerr.pub.output_message = my_jpeg_output_message; - - /* Establish the setjmp return context for my_error_exit to use. */ - if (setjmp (jerr.setjmp_buffer)) - { - /* If we get here, the JPEG code has signaled an error. - * We need to clean up the JPEG object, close the input file, and return. - */ - - { - Lisp_Object errstring; - char buffer[JMSG_LENGTH_MAX]; - - /* Create the message */ - (*cinfo.err->format_message) ((j_common_ptr) &cinfo, buffer); - errstring = build_string (buffer); - - signal_image_error_2 ("JPEG decoding error", - errstring, instantiator); - } - } - - /* Now we can initialize the JPEG decompression object. */ - jpeg_create_decompress (&cinfo); - unwind.cinfo_ptr = &cinfo; - - /* Step 2: specify data source (eg, a file) */ - -#ifdef USE_TEMP_FILES_FOR_JPEG_IMAGES - jpeg_stdio_src (&cinfo, unwind.instream); -#else - { - Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); - CONST Extbyte *bytes; - Extcount len; - - /* #### This is a definite problem under Mule due to the amount of - stack data it might allocate. Need to be able to convert and - write out to a file. */ - GET_STRING_BINARY_DATA_ALLOCA (data, bytes, len); - jpeg_memory_src (&cinfo, (JOCTET *) bytes, len); - } -#endif - - /* Step 3: read file parameters with jpeg_read_header() */ - - jpeg_read_header (&cinfo, TRUE); - /* We can ignore the return value from jpeg_read_header since - * (a) suspension is not possible with the stdio data source, and - * (b) we passed TRUE to reject a tables-only JPEG file as an error. - * See libjpeg.doc for more info. - */ - -#if 0 - /* Step 4: set parameters for decompression. */ - - if (vis->class == PseudoColor) - { - - /* We request that the JPEG file be automatically quantized into - 8-bit color in case it's not already (many JPEGs are stored in - 24-bit color). "Two-pass quantize" means that the colormap - is determined on-the-fly for this particular image rather than - quantizing to a supplied colormap. We can get away with this - because we then use allocate_nearest_color(). - - #### Note of course that this is not the most color-effective - way of doing things -- we could quantize an image that has - lots of very similar colors, and eat up the colormap with these - (useless to other images) colors. Unfortunately I don't think - there's any "general" way of maximizing the overall image - quality of lots of images, given that we don't know the - colors of the images until we come across each one. Best we - could do would be various sorts of heuristics, which I don't - feel like dealing with now. A better scheme would be the - way things are done under MS Windows, where the colormap is - dynamically adjusted for various applications; but that kind - of thing would have to be provided by X, which it isn't. */ - - cinfo.quantize_colors = TRUE; - cinfo.two_pass_quantize = TRUE; - cinfo.colormap = NULL; - } - - /* Step 5: Start decompressor */ - - jpeg_start_decompress (&cinfo); - /* We can ignore the return value since suspension is not possible - * with the stdio data source. - */ - - /* At this point we know the size of the image and the colormap. */ - - /* Step 5.33: Allocate the colors */ - if (vis->class == PseudoColor) - { - int i; - unwind.pixcount = 32; - unwind.pixels = xnew_array (unsigned long, unwind.pixcount); - unwind.npixels = 0; - - /* Allocate pixels for the various colors. */ - for (i = 0; i < cinfo.actual_number_of_colors; i++) - { - XColor color; - int ri, gi, bi, res; - - ri = 0; - gi = cinfo.out_color_components > 1 ? 1 : 0; - bi = cinfo.out_color_components > 2 ? 2 : 0; - - /* Ok... apparently, an entry of cinfo.colormap can be NULL if - there are no bits of that color in the image. How incredibly - gross. Wouldn't it be nice to have exceptions!? */ - color.red = cinfo.colormap[ri] ? cinfo.colormap[ri][i] << 8 : 0; - color.green = cinfo.colormap[gi] ? cinfo.colormap[gi][i] << 8 : 0; - color.blue = cinfo.colormap[bi] ? cinfo.colormap[bi][i] << 8 : 0; - color.flags = DoRed | DoGreen | DoBlue; - - res = allocate_nearest_color (dpy, cmap, vis, &color); - if (res > 0 && res < 3) - { - DO_REALLOC(unwind.pixels, unwind.pixcount, unwind.npixels+1, unsigned long); - unwind.pixels[unwind.npixels] = color.pixel; - unwind.npixels++; - } - } - } - - /* Step 5.66: Create the image */ - { - int height = cinfo.output_height; - int width = cinfo.output_width; - int depth; - int bitmap_pad; - - depth = DEVICE_X_DEPTH(XDEVICE(device)); - - /* first get bitmap_pad (from XPM) */ - bitmap_pad = ((depth > 16) ? 32 : - (depth > 8) ? 16 : - 8); - - unwind.ximage = XCreateImage (dpy, vis, depth, ZPixmap, 0, 0, width, height, - bitmap_pad, 0); - - if (!unwind.ximage) - signal_image_error ("Unable to create X image struct", instantiator); - - /* now that bytes_per_line must have been set properly alloc data */ - unwind.ximage->data = - (char *) xmalloc (unwind.ximage->bytes_per_line * height); - } - - /* Step 6: Read in the data and put into image */ - { - JSAMPARRAY row_buffer; /* Output row buffer */ - int row_stride; /* physical row width in output buffer */ - - /* We may need to do some setup of our own at this point before reading - * the data. After jpeg_start_decompress() we have the correct scaled - * output image dimensions available, as well as the output colormap - * if we asked for color quantization. - * In this example, we need to make an output work buffer of the right size. - */ - /* JSAMPLEs per row in output buffer. - Since we asked for quantized output, cinfo.output_components - will always be 1. */ - row_stride = cinfo.output_width * cinfo.output_components; - /* Make a one-row-high sample array that will go away when done - with image */ - row_buffer = ((*cinfo.mem->alloc_sarray) - ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1)); - - /* Here we use the library's state variable cinfo.output_scanline as the - * loop counter, so that we don't have to keep track ourselves. - */ - while (cinfo.output_scanline < cinfo.output_height) - { - int i; - int scanline = cinfo.output_scanline; - - /* jpeg_read_scanlines expects an array of pointers to scanlines. - * Here the array is only one element long, but you could ask for - * more than one scanline at a time if that's more convenient. - */ - jpeg_read_scanlines (&cinfo, row_buffer, 1); - - for (i = 0; i < (int) cinfo.output_width; i++) - XPutPixel (unwind.ximage, i, scanline, - /* Let's make sure we avoid getting bit like - what happened for GIF's. It's probably the - case that JSAMPLE's are unsigned chars as - opposed to chars, but you never know. - - (They could even be shorts if the library - was compiled with 12-bit samples -- #### - We should deal with this possibility) */ - unwind.pixels[(unsigned char) row_buffer[0][i]]); - } - } -#else - { - /* Step 4: set parameters for decompression. */ - - /* Now that we're using EImages, use the default of all data in 24bit color. - The backend routine will take care of any necessary reductions. */ - - /* Step 5: Start decompressor */ - jpeg_start_decompress (&cinfo); - - /* Step 6: Read in the data and put into EImage format (8bit RGB triples)*/ - - unwind.eimage = (unsigned char*) xmalloc (cinfo.output_width * cinfo.output_height * 3); - if (!unwind.eimage) - signal_image_error("Unable to allocate enough memory for image", instantiator); - - { - JSAMPARRAY row_buffer; /* Output row buffer */ - JSAMPLE *jp; - int row_stride; /* physical row width in output buffer */ - unsigned char *op = unwind.eimage; - - /* We may need to do some setup of our own at this point before reading - * the data. After jpeg_start_decompress() we have the correct scaled - * output image dimensions available - * We need to make an output work buffer of the right size. - */ - /* JSAMPLEs per row in output buffer. */ - row_stride = cinfo.output_width * cinfo.output_components; - /* Make a one-row-high sample array that will go away when done - with image */ - row_buffer = ((*cinfo.mem->alloc_sarray) - ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1)); - - /* Here we use the library's state variable cinfo.output_scanline as the - * loop counter, so that we don't have to keep track ourselves. - */ - while (cinfo.output_scanline < cinfo.output_height) - { - int i; - - /* jpeg_read_scanlines expects an array of pointers to scanlines. - * Here the array is only one element long, but you could ask for - * more than one scanline at a time if that's more convenient. - */ - (void) jpeg_read_scanlines (&cinfo, row_buffer, 1); - jp = row_buffer[0]; - for (i = 0; i < cinfo.output_width; i++) - { - int clr; -#if (BITS_IN_JSAMPLE == 8) - for (clr = 0; clr < 3; clr++) - *op++ = (unsigned char)*jp++; -#else /* other option is 12 */ - for (clr = 0; clr < 3; clr++) - *op++ = (unsigned char)(*jp++ >> 4); -#endif - } - } - unwind.ximage = convert_EImage_to_XImage (device, cinfo.output_width, cinfo.output_height, unwind.eimage, - &unwind.pixels, &unwind.pixcount, &unwind.npixels); - if (!unwind.ximage) - signal_image_error("JPEG conversion failed", instantiator); - } - } - -#endif - /* Step 6.5: Create the pixmap and set up the image instance */ - init_image_instance_from_x_image (ii, unwind.ximage, dest_mask, - cmap, unwind.pixels, unwind.npixels, - instantiator); - - /* Step 7: Finish decompression */ - - jpeg_finish_decompress (&cinfo); - /* We can ignore the return value since suspension is not possible - * with the stdio data source. - */ - - /* And we're done! - - Now that we've succeeded, we don't want the pixels - freed right now. They're kept around in the image instance - structure until it's destroyed. */ - unwind.npixels = 0; - unwind.pixcount = 0; - - /* This will clean up everything else. */ - unbind_to (speccount, Qnil); -} - -#endif /* HAVE_JPEG */ - -#ifdef HAVE_GIF -/* #define USE_TEMP_FILES_FOR_GIF_IMAGES */ -/********************************************************************** - * GIF * - **********************************************************************/ - -#include <gif_lib.h> - -static void -gif_validate (Lisp_Object instantiator) -{ - file_or_data_must_be_present (instantiator); -} - -static Lisp_Object -gif_normalize (Lisp_Object inst, Lisp_Object console_type) -{ - return simple_image_type_normalize (inst, console_type, Qgif); -} - -static int -gif_possible_dest_types (void) -{ - return IMAGE_COLOR_PIXMAP_MASK; -} - -/* To survive the otherwise baffling complexity of making sure - everything gets cleaned up in the presence of an error, we - use an unwind_protect(). */ - -struct gif_unwind_data -{ - Display *dpy; - Colormap cmap; - unsigned char *eimage; - /* Object that holds the decoded data from a GIF file */ - GifFileType *giffile; - /* Pixels to keep around while the image is active */ - unsigned long *pixels; - int npixels, pixcount; - /* Client-side image structure */ - XImage *ximage; -#ifdef USE_TEMP_FILES_FOR_GIF_IMAGES - /* Tempfile to remove */ - char tempfile[50]; - int tempfile_needs_to_be_removed; -#endif -}; - -static Lisp_Object -gif_instantiate_unwind (Lisp_Object unwind_obj) -{ - struct gif_unwind_data *data = - (struct gif_unwind_data *) get_opaque_ptr (unwind_obj); - - free_opaque_ptr (unwind_obj); - if (data->giffile) - { - DGifCloseFile (data->giffile); - GifFree(data->giffile); - } - if (data->eimage) xfree(data->eimage); -#ifdef USE_TEMP_FILES_FOR_GIF_IMAGES - if (data->tempfile_needs_to_be_removed) - unlink (data->tempfile); -#endif - if (data->npixels > 0) - XFreeColors (data->dpy, data->cmap, data->pixels, data->npixels, 0L); - if (data->pixcount > 0) - xfree (data->pixels); - if (data->ximage) - { - if (data->ximage->data) - { - xfree (data->ximage->data); - data->ximage->data = 0; - } - XDestroyImage (data->ximage); - } - - return Qnil; -} - -#ifndef USE_TEMP_FILES_FOR_GIF_IMAGES -typedef struct gif_memory_storage -{ - Extbyte *bytes; /* The data */ - Extcount len; /* How big is it? */ - int index; /* Where are we? */ -} gif_memory_storage; - -static size_t -gif_read_from_memory(GifByteType *buf, size_t size, VoidPtr data) -{ - gif_memory_storage *mem = (gif_memory_storage*)data; - - if (size > (mem->len - mem->index)) - return -1; - memcpy(buf, mem->bytes + mem->index, size); - mem->index = mem->index + size; - return size; -} - -static int -gif_memory_close(VoidPtr data) -{ - return 0; -} - -#endif -struct gif_error_struct -{ - CONST char *err_str; /* return the error string */ - jmp_buf setjmp_buffer; /* for return to caller */ -}; - -static void -gif_error_func(CONST char *err_str, VoidPtr error_ptr) -{ - struct gif_error_struct *error_data = (struct gif_error_struct*)error_ptr; - - /* return to setjmp point */ - error_data->err_str = err_str; - longjmp (error_data->setjmp_buffer, 1); -} - -static void -gif_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, - Lisp_Object pointer_fg, Lisp_Object pointer_bg, - int dest_mask, Lisp_Object domain) -{ - struct Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); - Lisp_Object device = IMAGE_INSTANCE_DEVICE (ii); - Display *dpy; - Colormap cmap; - Visual *vis; - /* It is OK for the unwind data to be local to this function, - because the unwind-protect is always executed when this - stack frame is still valid. */ - struct gif_unwind_data unwind; - int speccount = specpdl_depth (); -#ifndef USE_TEMP_FILES_FOR_GIF_IMAGES - gif_memory_storage mem_struct; - struct gif_error_struct gif_err; - Extbyte *bytes; - Extcount len; -#endif - if (!DEVICE_X_P (XDEVICE (device))) - signal_simple_error ("Not an X device", device); - - dpy = DEVICE_X_DISPLAY (XDEVICE (device)); - cmap = DEVICE_X_COLORMAP (XDEVICE(device)); - vis = DEVICE_X_VISUAL (XDEVICE(device)); - - xzero (unwind); - unwind.dpy = dpy; - unwind.cmap = cmap; - record_unwind_protect (gif_instantiate_unwind, make_opaque_ptr (&unwind)); - - /* 1. Now decode the data. */ - - { - Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); - - assert (!NILP (data)); - - if (!(unwind.giffile = GifSetup())) - signal_image_error ("Insufficent memory to instantiate GIF image", instantiator); - - /* set up error facilities */ - if (setjmp(gif_err.setjmp_buffer)) - { - /* An error was signaled. No clean up is needed, as unwind handles that - for us. Just pass the error along. */ - Lisp_Object errstring; - errstring = build_string (gif_err.err_str); - signal_image_error_2 ("GIF decoding error", errstring, instantiator); - } - GifSetErrorFunc(unwind.giffile, (Gif_error_func)gif_error_func, (VoidPtr)&gif_err); - -#ifdef USE_TEMP_FILES_FOR_GIF_IMAGES - write_lisp_string_to_temp_file (data, unwind.tempfile); - unwind.tempfile_needs_to_be_removed = 1; - DGifOpenFileName (unwind.giffile, unwind.tempfile); -#else - GET_STRING_BINARY_DATA_ALLOCA (data, bytes, len); - mem_struct.bytes = bytes; - mem_struct.len = len; - mem_struct.index = 0; - GifSetReadFunc(unwind.giffile, gif_read_from_memory, (VoidPtr)&mem_struct); - GifSetCloseFunc(unwind.giffile, gif_memory_close, (VoidPtr)&mem_struct); - DGifInitRead(unwind.giffile); -#endif - /* Then slurp the image into memory, decoding along the way. - The result is the image in a simple one-byte-per-pixel - format (#### the GIF routines only support 8-bit GIFs, - it appears). */ - DGifSlurp (unwind.giffile); - } - -#if 0 - /* 2. Now allocate the colors for the image. */ - { - int i; - ColorMapObject *cmo = unwind.giffile->SColorMap; - /* Just in case the image contains out-of-range pixels, we go - ahead and allocate space for all of them. */ - unwind.pixels = xnew_array (unsigned long, 256); - unwind.npixels = 0; - - for (i = 0; i < 256; i++) - unwind.pixels[i] = 0; /* Use a reasonable color for out of range. */ - - /* Allocate pixels for the various colors. */ - for (i = 0; i < cmo->ColorCount; i++) - { - int res; - XColor color; - - color.red = cmo->Colors[i].Red << 8; - color.green = cmo->Colors[i].Green << 8; - color.blue = cmo->Colors[i].Blue << 8; - color.flags = DoRed | DoGreen | DoBlue; - - res = allocate_nearest_color (dpy, cmap, vis, &color); - if (res > 0 && res < 3) - { - unwind.pixels[unwind.npixels] = color.pixel; - unwind.npixels++; - } - } - } - - /* 3. Now create the image */ - { - int height = unwind.giffile->SHeight; - int width = unwind.giffile->SWidth; - int depth; - int bitmap_pad; - int i, j, row, pass, interlace; - /* interlaced gifs have rows in this order: - 0, 8, 16, ..., 4, 12, 20, ..., 2, 6, 10, ..., 1, 3, 5, ... */ - static int InterlacedOffset[] = { 0, 4, 2, 1 }; - static int InterlacedJumps[] = { 8, 8, 4, 2 }; - - depth = DEVICE_X_DEPTH(XDEVICE(device)); - - /* first get bitmap_pad (from XPM) */ - bitmap_pad = ((depth > 16) ? 32 : - (depth > 8) ? 16 : - 8); - - unwind.ximage = XCreateImage (dpy, vis, - depth, ZPixmap, 0, 0, width, height, - bitmap_pad, 0); - - if (!unwind.ximage) - signal_image_error ("Unable to create X image struct", instantiator); - - /* now that bytes_per_line must have been set properly alloc data */ - unwind.ximage->data = - (char *) xmalloc (unwind.ximage->bytes_per_line * height); - - /* write the data -- - #### XPutPixel() is a client-side-only function but could - still be slow. Another possibility is to just convert to - XPM format and use the Xpm routines, which optimize this - stuff; but it's doubtful that this will be faster in the - long run, what with all the XPM overhead. If this proves - to be a bottleneck here, maybe we should just copy the - optimization routines from XPM (they're in turn mostly - copied from the Xlib source code). */ - - /* Note: We just use the first image in the file and ignore the rest. - We check here that that image covers the full "screen" size. - I don't know whether that's always the case. - -dkindred@cs.cmu.edu */ - if (unwind.giffile->SavedImages[0].ImageDesc.Height != height - || unwind.giffile->SavedImages[0].ImageDesc.Width != width - || unwind.giffile->SavedImages[0].ImageDesc.Left != 0 - || unwind.giffile->SavedImages[0].ImageDesc.Top != 0) - signal_image_error ("First image in GIF file is not full size", - instantiator); - - interlace = unwind.giffile->SavedImages[0].ImageDesc.Interlace; - pass = 0; - row = interlace ? InterlacedOffset[pass] : 0; - for (i = 0; i < height; i++) - { - if (interlace && row >= height) - row = InterlacedOffset[++pass]; - - for (j = 0; j < width; j++) - XPutPixel (unwind.ximage, j, row, - unwind.pixels[(unsigned char) - /* incorrect signed declaration - of RasterBits[] */ - (unwind.giffile->SavedImages[0]. - RasterBits[i * width + j])]); - - row += interlace ? InterlacedJumps[pass] : 1; - } - } -#else - /* 3. Now create the EImage */ - { - ColorMapObject *cmo = unwind.giffile->SColorMap; - int height = unwind.giffile->SHeight; - int width = unwind.giffile->SWidth; - int i, j, row, pass, interlace; - unsigned char *eip; - /* interlaced gifs have rows in this order: - 0, 8, 16, ..., 4, 12, 20, ..., 2, 6, 10, ..., 1, 3, 5, ... */ - static int InterlacedOffset[] = { 0, 4, 2, 1 }; - static int InterlacedJumps[] = { 8, 8, 4, 2 }; - - unwind.eimage = (unsigned char*) xmalloc (width * height * 3); - if (!unwind.eimage) - signal_image_error("Unable to allocate enough memory for image", instantiator); - - /* write the data in EImage format (8bit RGB triples) */ - - /* Note: We just use the first image in the file and ignore the rest. - We check here that that image covers the full "screen" size. - I don't know whether that's always the case. - -dkindred@cs.cmu.edu */ - if (unwind.giffile->SavedImages[0].ImageDesc.Height != height - || unwind.giffile->SavedImages[0].ImageDesc.Width != width - || unwind.giffile->SavedImages[0].ImageDesc.Left != 0 - || unwind.giffile->SavedImages[0].ImageDesc.Top != 0) - signal_image_error ("First image in GIF file is not full size", - instantiator); - - interlace = unwind.giffile->SavedImages[0].ImageDesc.Interlace; - pass = 0; - row = interlace ? InterlacedOffset[pass] : 0; - eip = unwind.eimage; - for (i = 0; i < height; i++) - { - if (interlace && row >= height) - row = InterlacedOffset[++pass]; - eip = unwind.eimage + (row * width * 3); - for (j = 0; j < width; j++) - { - unsigned char pixel = unwind.giffile->SavedImages[0].RasterBits[(i * width) + j]; - *eip++ = cmo->Colors[pixel].Red; - *eip++ = cmo->Colors[pixel].Green; - *eip++ = cmo->Colors[pixel].Blue; - } - row += interlace ? InterlacedJumps[pass] : 1; - } - unwind.ximage = convert_EImage_to_XImage (device, width, height, unwind.eimage, - &unwind.pixels, &unwind.pixcount, &unwind.npixels); - if (!unwind.ximage) - signal_image_error("GIF conversion failed", instantiator); - } -#endif - /* 4. Now create the pixmap and set up the image instance */ - init_image_instance_from_x_image (ii, unwind.ximage, dest_mask, - cmap, unwind.pixels, unwind.npixels, - instantiator); - /* Now that we've succeeded, we don't want the pixels - freed right now. They're kept around in the image instance - structure until it's destroyed. */ - unwind.npixels = 0; - unwind.pixcount = 0; - unbind_to (speccount, Qnil); -} - -#endif /* HAVE_GIF */ - - -#ifdef HAVE_PNG -/* #define USE_TEMP_FILES_FOR_PNG_IMAGES 1 */ - -/********************************************************************** - * PNG * - **********************************************************************/ -static void -png_validate (Lisp_Object instantiator) -{ - file_or_data_must_be_present (instantiator); -} - -static Lisp_Object -png_normalize (Lisp_Object inst, Lisp_Object console_type) -{ - return simple_image_type_normalize (inst, console_type, Qpng); -} - -static int -png_possible_dest_types (void) -{ - return IMAGE_COLOR_PIXMAP_MASK; -} - -#ifndef USE_TEMP_FILES_FOR_PNG_IMAGES -struct png_memory_storage -{ - CONST Extbyte *bytes; /* The data */ - Extcount len; /* How big is it? */ - int index; /* Where are we? */ -}; - -static void -png_read_from_memory(png_structp png_ptr, png_bytep data, - png_size_t length) -{ - struct png_memory_storage *tbr = - (struct png_memory_storage *) png_get_io_ptr (png_ptr); - - if (length > (tbr->len - tbr->index)) - png_error (png_ptr, (png_const_charp) "Read Error"); - memcpy (data,tbr->bytes + tbr->index,length); - tbr->index = tbr->index + length; -} -#endif /* !USE_TEMP_FILES_FOR_PNG_IMAGES */ - -struct png_error_struct -{ - CONST char *err_str; - jmp_buf setjmp_buffer; /* for return to caller */ -}; - -/* jh 98/03/12 - #### AARRRGH! libpng includes jmp_buf inside its own - structure, and there are cases where the size can be different from - between inside the libarary, and inside the code! To do an end run - around this, use our own error functions, and don't rely on things - passed in the png_ptr to them. This is an ugly hack and must - go away when the lisp engine is threaded! */ -static struct png_error_struct png_err_stct; - -static void -png_error_func (png_structp png_ptr, png_const_charp msg) -{ - png_err_stct.err_str = msg; - longjmp (png_err_stct.setjmp_buffer, 1); -} - -static void -png_warning_func (png_structp png_ptr, png_const_charp msg) -{ - warn_when_safe (Qpng, Qinfo, "%s", msg); -} - -struct png_unwind_data -{ - Display *dpy; - Colormap cmap; - FILE *instream; - unsigned char *eimage; - png_structp png_ptr; - png_infop info_ptr; - unsigned long *pixels; - int npixels, pixcount; - XImage *ximage; -#ifdef USE_TEMP_FILES_FOR_PNG_IMAGESS - char tempfile[50]; - int tempfile_needs_to_be_removed; -#endif -}; - -static Lisp_Object -png_instantiate_unwind (Lisp_Object unwind_obj) -{ - struct png_unwind_data *data = - (struct png_unwind_data *) get_opaque_ptr (unwind_obj); - - free_opaque_ptr (unwind_obj); - if (data->png_ptr) - png_destroy_read_struct (&(data->png_ptr), &(data->info_ptr), (png_infopp)NULL); - if (data->instream) - fclose (data->instream); - if (data->npixels > 0) - XFreeColors (data->dpy, data->cmap, data->pixels, data->npixels, 0L); - if (data->pixcount > 0) - xfree (data->pixels); - - if (data->eimage) - xfree (data->eimage); - if (data->ximage) - { - if (data->ximage->data) - { - xfree (data->ximage->data); - data->ximage->data = 0; - } - XDestroyImage (data->ximage); - } -#ifdef USE_TEMP_FILES_FOR_PNG_IMAGES - if (data->tempfile_needs_to_be_removed) - unlink (data->tempfile); -#endif - return Qnil; -} - -static void -png_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, - Lisp_Object pointer_fg, Lisp_Object pointer_bg, - int dest_mask, Lisp_Object domain) -{ - struct Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); - Lisp_Object device = IMAGE_INSTANCE_DEVICE (ii); - Display *dpy; - Colormap cmap; - Visual *vis; - struct png_unwind_data unwind; - int speccount = specpdl_depth (); - - /* PNG variables */ - png_structp png_ptr; - png_infop info_ptr; - - if (!DEVICE_X_P (XDEVICE (device))) - signal_simple_error ("Not an X device", device); - - dpy = DEVICE_X_DISPLAY (XDEVICE (device)); - cmap = DEVICE_X_COLORMAP (XDEVICE(device)); - vis = DEVICE_X_VISUAL (XDEVICE(device)); - - /* Initialize all PNG structures */ - png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, (void*)&png_err_stct, - png_error_func, png_warning_func); - if (!png_ptr) - signal_image_error ("Error obtaining memory for png_read", instantiator); - info_ptr = png_create_info_struct (png_ptr); - if (!info_ptr) - { - png_destroy_read_struct (&png_ptr, (png_infopp)NULL, (png_infopp)NULL); - signal_image_error ("Error obtaining memory for png_read", instantiator); - } - - xzero (unwind); - unwind.png_ptr = png_ptr; - unwind.info_ptr = info_ptr; - unwind.dpy = dpy; - unwind.cmap = cmap; - - record_unwind_protect (png_instantiate_unwind, make_opaque_ptr (&unwind)); - - /* This code is a mixture of stuff from Ben's GIF/JPEG stuff from - this file, example.c from the libpng 0.81 distribution, and the - pngtopnm sources. -WMP- - */ - /* It has been further modified to handle the API changes for 0.96, - and is no longer usable for previous versions. jh - */ - - /* Set the jmp_buf reurn context for png_error ... if this returns !0, then - we ran into a problem somewhere, and need to clean up after ourselves. */ - if (setjmp (png_err_stct.setjmp_buffer)) - { - /* Something blew up: just display the error (cleanup happens in the unwind) */ - signal_image_error_2 ("Error decoding PNG", - build_string(png_err_stct.err_str), - instantiator); - } - - /* Initialize the IO layer and read in header information */ - { - Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); - CONST Extbyte *bytes; - Extcount len; - struct png_memory_storage tbr; /* Data to be read */ - - assert (!NILP (data)); - - /* #### This is a definite problem under Mule due to the amount of - stack data it might allocate. Need to think about using Lstreams */ - GET_STRING_BINARY_DATA_ALLOCA (data, bytes, len); - tbr.bytes = bytes; - tbr.len = len; - tbr.index = 0; - png_set_read_fn (png_ptr,(void *) &tbr, png_read_from_memory); - } - - png_read_info (png_ptr, info_ptr); - -#if 0 - /* set up the transformations you want. Note that these are - all optional. Only call them if you want them */ - /* tell libpng to strip 16 bit depth files down to 8 bits */ - if (info_ptr->bit_depth == 16) - png_set_strip_16 (png_ptr); - if (info_ptr->bit_depth < 8) - png_set_packing (png_ptr); - /* ##### Perhaps some way to specify the screen gamma should be in here? */ - - { - int height = info_ptr->height; - int width = info_ptr->width; - int depth = info_ptr->bit_depth; - int linesize = max (info_ptr->bit_depth >> 3, 1) * width; - int bitmap_pad; - int y; - XColor color; - png_byte *png_pixels; - png_byte **row_pointers; - png_color static_color_cube[216]; - - /* Wow, allocate all the memory. Truly, exciting. */ - unwind.pixcount = 32; - unwind.pixels = xnew_array (unsigned long, unwind.pixcount); - png_pixels = xnew_array (png_byte, linesize * height); - row_pointers = xnew_array (png_byte *, height); - - for (y = 0; y < height; y++) - row_pointers[y] = png_pixels + (linesize * y); - - /* #### This is where we should handle transparency, but I am unsure of - how exactly to get that information right now, in a safe manner. */ -#if 0 - { - png_color_16 current_background; - - /* Some appropriate magic should go here to get the current - buffers (device?) background color and convert it to a - png_color_16 struct */ - if (info_ptr->valid & PNG_INFO_bKGD) - png_set_background (png_ptr, &(info_ptr->background), PNG_GAMMA_FILE, - 1, 1.0); - else - png_set_background (png_ptr, ¤t_background, PNG_GAMMA_SCREEN, - 0, 1.0); - } -#endif - - if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) || - (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) && - (vis->class == PseudoColor)) - { - if (!(info_ptr->valid & PNG_INFO_PLTE)) - { - for (y = 0; y < 216; y++) - { - static_color_cube[y].red = (png_byte) ((y % 6) * 255.0 / 5); - static_color_cube[y].green = (png_byte) (((y / 6) % 6) * 255.0 / 5); - static_color_cube[y].blue = (png_byte) ((y / 36) * 255.0 / 5); - } - png_set_dither (png_ptr, static_color_cube, 216, 216, NULL, 1); - } - else - { - png_set_dither (png_ptr, info_ptr->palette, info_ptr->num_palette, - info_ptr->num_palette, info_ptr->hist, 1); - } - } - - png_read_image (png_ptr, row_pointers); - png_read_end (png_ptr, info_ptr); - - /* Ok, now we go and allocate all the colors */ - if (info_ptr->valid & PNG_INFO_PLTE) - { - unwind.npixels = 0; - for (y = 0; y < info_ptr->num_palette; y++) - { - int res; - color.red = info_ptr->palette[y].red << 8; - color.green = info_ptr->palette[y].green << 8; - color.blue = info_ptr->palette[y].blue << 8; - color.flags = DoRed | DoGreen | DoBlue; - res = allocate_nearest_color (dpy, cmap, vis, &color); - if (res > 0 && res < 3) - { - DO_REALLOC(unwind.pixels, unwind.pixcount, unwind.npixels+1, unsigned long); - unwind.pixels[unwind.npixels] = color.pixel; - unwind.npixels++; - } - } - } - else - { - unwind.npixels = 0; - for (y = 0; y < 216; y++) - { - int res; - color.red = static_color_cube[y].red << 8; - color.green = static_color_cube[y].green << 8; - color.blue = static_color_cube[y].blue << 8; - color.flags = DoRed|DoGreen|DoBlue; - res = allocate_nearest_color (dpy, cmap, vis, &color); - if (res > 0 && res < 3) - { - unwind.pixels[unwind.npixels] = color.pixel; - unwind.npixels++; - } - } - } - -#ifdef PNG_SHOW_COMMENTS - /* #### - * I turn this off by default now, because the !%^@#!% comments - * show up every time the image is instantiated, which can get - * really really annoying. There should be some way to pass this - * type of data down into the glyph code, where you can get to it - * from lisp anyway. - WMP - */ - { - int i; - - for (i = 0 ; i < info_ptr->num_text ; i++) - { - /* How paranoid do I have to be about no trailing NULLs, and - using (int)info_ptr->text[i].text_length, and strncpy and a temp - string somewhere? */ - - warn_when_safe (Qpng, Qinfo, "%s - %s", - info_ptr->text[i].key, - info_ptr->text[i].text); - } - } -#endif - - /* Now create the image */ - - depth = DEVICE_X_DEPTH(XDEVICE(device)); - - /* first get bitmap_pad (from XPM) */ - bitmap_pad = ((depth > 16) ? 32 : - (depth > 8) ? 16 : - 8); - - unwind.ximage = XCreateImage (dpy, vis, - depth, ZPixmap, 0, 0, width, height, - bitmap_pad, 0); - - if (!unwind.ximage) - signal_image_error ("Unable to create X image struct", - instantiator); - - /* now that bytes_per_line must have been set properly alloc data */ - unwind.ximage->data = (char *) xmalloc (unwind.ximage->bytes_per_line * - height); - - { - int i, j; - for (i = 0; i < height; i++) - for (j = 0; j < width; j++) - XPutPixel (unwind.ximage, j, i, - unwind.pixels[png_pixels[i * width + j]]); - } - - xfree (row_pointers); - xfree (png_pixels); - } -#else - { - int height = info_ptr->height; - int width = info_ptr->width; - int y; - unsigned char **row_pointers; - - /* Wow, allocate all the memory. Truly, exciting. */ - unwind.eimage = xnew_array_and_zero (unsigned char, width * height * 3); - /* libpng expects that the image buffer passed in contains a - picture to draw on top of if the png has any transparencies. - This could be a good place to pass that in... */ - - row_pointers = xnew_array (png_byte *, height); - - for (y = 0; y < height; y++) - row_pointers[y] = unwind.eimage + (width * 3 * y); - - /* Now that we're using EImage, ask for 8bit RGB triples for any type - of image*/ - /* convert palatte images to full RGB */ - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - png_set_expand (png_ptr); - /* send grayscale images to RGB too */ - if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY || - info_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - png_set_gray_to_rgb (png_ptr); - /* we can't handle alpha values */ - if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) - png_set_strip_alpha (png_ptr); - /* rip out any transparancy layers/colors */ - if (png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) - { - png_set_expand (png_ptr); - png_set_strip_alpha (png_ptr); - } - /* tell libpng to strip 16 bit depth files down to 8 bits */ - if (info_ptr->bit_depth == 16) - png_set_strip_16 (png_ptr); - /* if the image is < 8 bits, pad it out */ - if (info_ptr->bit_depth < 8) - { - if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY) - png_set_expand (png_ptr); - else - png_set_packing (png_ptr); - } - -#if 1 /* tests? or permanent? */ - { - /* if the png specifies a background chunk, go ahead and - use it */ - png_color_16 my_background, *image_background; - - /* ### how do I get the background of the current frame? */ - my_background.red = 0x7fff; - my_background.green = 0x7fff; - my_background.blue = 0x7fff; - - if (png_get_bKGD (png_ptr, info_ptr, &image_background)) - png_set_background (png_ptr, image_background, - PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); - else - png_set_background (png_ptr, &my_background, - PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); - } -#endif - png_read_image (png_ptr, row_pointers); - png_read_end (png_ptr, info_ptr); - -#ifdef PNG_SHOW_COMMENTS - /* #### - * I turn this off by default now, because the !%^@#!% comments - * show up every time the image is instantiated, which can get - * really really annoying. There should be some way to pass this - * type of data down into the glyph code, where you can get to it - * from lisp anyway. - WMP - */ - { - int i; - - for (i = 0 ; i < info_ptr->num_text ; i++) - { - /* How paranoid do I have to be about no trailing NULLs, and - using (int)info_ptr->text[i].text_length, and strncpy and a temp - string somewhere? */ - - warn_when_safe (Qpng, Qinfo, "%s - %s", - info_ptr->text[i].key, - info_ptr->text[i].text); - } - } -#endif - - xfree (row_pointers); - unwind.ximage = convert_EImage_to_XImage (device, width, height, unwind.eimage, - &unwind.pixels, &unwind.pixcount, &unwind.npixels); - if (!unwind.ximage) - signal_image_error ("PNG conversion failed", instantiator); - } -#endif - - init_image_instance_from_x_image (ii, unwind.ximage, dest_mask, - cmap, unwind.pixels, unwind.npixels, - instantiator); - - /* This will clean up everything else. */ - unwind.npixels = 0; - unwind.pixcount = 0; - unbind_to (speccount, Qnil); -} - -#endif /* HAVE_PNG */ - - -#ifdef HAVE_TIFF -#include "tiffio.h" - -/********************************************************************** - * TIFF * - **********************************************************************/ -static void -tiff_validate (Lisp_Object instantiator) -{ - file_or_data_must_be_present (instantiator); -} - -static Lisp_Object -tiff_normalize (Lisp_Object inst, Lisp_Object console_type) -{ - return simple_image_type_normalize (inst, console_type, Qtiff); -} - -static int -tiff_possible_dest_types (void) -{ - return IMAGE_COLOR_PIXMAP_MASK; -} - -struct tiff_unwind_data -{ - Display *dpy; - Colormap cmap; - unsigned char *eimage; - /* Object that holds the decoded data from a TIFF file */ - TIFF *tiff; - /* Pixels to keep around while the image is active */ - unsigned long *pixels; - int npixels,pixcount; - /* Client-side image structure */ - XImage *ximage; -}; - -static Lisp_Object -tiff_instantiate_unwind (Lisp_Object unwind_obj) -{ - struct tiff_unwind_data *data = - (struct tiff_unwind_data *) get_opaque_ptr (unwind_obj); - - free_opaque_ptr (unwind_obj); - if (data->tiff) - { - TIFFClose(data->tiff); - } - if (data->eimage) - xfree (data->eimage); - if (data->npixels > 0) - XFreeColors (data->dpy, data->cmap, data->pixels, data->npixels, 0L); - if (data->pixcount) - xfree (data->pixels); - if (data->ximage) - { - if (data->ximage->data) - { - xfree (data->ximage->data); - data->ximage->data = 0; - } - XDestroyImage (data->ximage); - } - - return Qnil; -} - -typedef struct tiff_memory_storage -{ - Extbyte *bytes; /* The data */ - Extcount len; /* How big is it? */ - int index; /* Where are we? */ -} tiff_memory_storage; - -static size_t -tiff_memory_read(thandle_t data, tdata_t buf, tsize_t size) -{ - tiff_memory_storage *mem = (tiff_memory_storage*)data; - - if (size > (mem->len - mem->index)) - return (size_t) -1; - memcpy(buf, mem->bytes + mem->index, size); - mem->index = mem->index + size; - return size; -} - -static size_t tiff_memory_write(thandle_t data, tdata_t buf, tsize_t size) -{ - abort(); - return 0; /* Shut up warnings. */ -} - -static toff_t tiff_memory_seek(thandle_t data, toff_t off, int whence) -{ - tiff_memory_storage *mem = (tiff_memory_storage*)data; - int newidx; - switch(whence) { - case SEEK_SET: - newidx = off; - break; - case SEEK_END: - newidx = mem->len + off; - break; - case SEEK_CUR: - newidx = mem->index + off; - break; - default: - fprintf(stderr,"Eh? invalid seek mode in tiff_memory_seek\n"); - return -1; - } - - if ((newidx > mem->len) || (newidx < 0)) - return -1; - - mem->index = newidx; - return newidx; -} - -static int -tiff_memory_close(thandle_t data) -{ - return 0; -} - -static int -tiff_map_noop(thandle_t data, tdata_t* pbase, toff_t* psize) -{ - return 0; -} - -static void -tiff_unmap_noop(thandle_t data, tdata_t pbase, toff_t psize) -{ - return; -} - -static toff_t -tiff_memory_size(thandle_t data) -{ - tiff_memory_storage *mem = (tiff_memory_storage*)data; - return mem->len; -} - -struct tiff_error_struct -{ -#if HAVE_VSNPRINTF - char err_str[256]; -#else - char err_str[1024]; /* return the error string */ -#endif - jmp_buf setjmp_buffer; /* for return to caller */ -}; - -/* jh 98/03/12 - ###This struct for passing data to the error functions - is an ugly hack caused by the fact that libtiff (as of v3.4) doesn't - have any place to store error func data. This should be rectified - before XEmacs gets threads! */ -static struct tiff_error_struct tiff_err_data; - -static void -tiff_error_func(CONST char *module, CONST char *fmt, ...) -{ - va_list vargs; - - va_start (vargs, fmt); -#if HAVE_VSNPRINTF - vsnprintf (tiff_err_data.err_str, 255, fmt, vargs); -#else - /* pray this doesn't overflow... */ - vsprintf (tiff_err_data.err_str, fmt, vargs); -#endif - va_end (vargs); - /* return to setjmp point */ - longjmp (tiff_err_data.setjmp_buffer, 1); -} - -static void -tiff_warning_func(CONST char *module, CONST char *fmt, ...) -{ - va_list vargs; -#if HAVE_VSNPRINTF - char warn_str[256]; -#else - char warn_str[1024]; -#endif - - va_start (vargs, fmt); -#if HAVE_VSNPRINTF - vsnprintf (warn_str, 255, fmt, vargs); -#else - vsprintf (warn_str, fmt, vargs); -#endif - va_end (vargs); - warn_when_safe (Qtiff, Qinfo, "%s - %s", - module, warn_str); -} - -static void -tiff_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, - Lisp_Object pointer_fg, Lisp_Object pointer_bg, - int dest_mask, Lisp_Object domain) -{ - struct Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); - Lisp_Object device = IMAGE_INSTANCE_DEVICE (ii); - Colormap cmap; - Display *dpy; - tiff_memory_storage mem_struct; - /* It is OK for the unwind data to be local to this function, - because the unwind-protect is always executed when this - stack frame is still valid. */ - struct tiff_unwind_data unwind; - int speccount = specpdl_depth (); - - if (!DEVICE_X_P (XDEVICE (device))) - signal_simple_error ("Not an X device", device); - - dpy = DEVICE_X_DISPLAY (XDEVICE (device)); - cmap = DEVICE_X_COLORMAP (XDEVICE(device)); - - xzero (unwind); - unwind.dpy = dpy; - unwind.cmap = cmap; - record_unwind_protect (tiff_instantiate_unwind, make_opaque_ptr (&unwind)); - - /* set up error facilities */ - if (setjmp (tiff_err_data.setjmp_buffer)) - { - /* An error was signaled. No clean up is needed, as unwind handles that - for us. Just pass the error along. */ - signal_image_error_2 ("TIFF decoding error", - build_string(tiff_err_data.err_str), - instantiator); - } - TIFFSetErrorHandler ((TIFFErrorHandler)tiff_error_func); - TIFFSetWarningHandler ((TIFFErrorHandler)tiff_warning_func); - { - Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); - Extbyte *bytes; - Extcount len; - - uint32 width, height; - uint32 *raster; - unsigned char *ep; - - assert (!NILP (data)); - - /* #### This is a definite problem under Mule due to the amount of - stack data it might allocate. Think about Lstreams... */ - GET_STRING_BINARY_DATA_ALLOCA (data, bytes, len); - mem_struct.bytes = bytes; - mem_struct.len = len; - mem_struct.index = 0; - - unwind.tiff = TIFFClientOpen ("memfile", "r", &mem_struct, - (TIFFReadWriteProc)tiff_memory_read, - (TIFFReadWriteProc)tiff_memory_write, - tiff_memory_seek, tiff_memory_close, tiff_memory_size, - tiff_map_noop, tiff_unmap_noop); - if (!unwind.tiff) - signal_image_error ("Insufficent memory to instantiate TIFF image", instantiator); - - TIFFGetField (unwind.tiff, TIFFTAG_IMAGEWIDTH, &width); - TIFFGetField (unwind.tiff, TIFFTAG_IMAGELENGTH, &height); - unwind.eimage = (unsigned char *) xmalloc (width * height * 3); - - /* ### This is little more than proof-of-concept/function testing. - It needs to be reimplimented via scanline reads for both memory - compactness. */ - raster = (uint32*) _TIFFmalloc (width * height * sizeof (uint32)); - if (raster != NULL) - { - int i,j; - uint32 *rp; - ep = unwind.eimage; - rp = raster; - if (TIFFReadRGBAImage (unwind.tiff, width, height, raster, 0)) - { - for (i = height - 1; i >= 0; i--) - { - /* This is to get around weirdness in the libtiff library where properly - made TIFFs will come out upside down. libtiff bug or jhod-brainlock? */ - rp = raster + (i * width); - for (j = 0; j < width; j++) - { - *ep++ = (unsigned char)TIFFGetR(*rp); - *ep++ = (unsigned char)TIFFGetG(*rp); - *ep++ = (unsigned char)TIFFGetB(*rp); - rp++; - } - } - } - _TIFFfree (raster); - } else - signal_image_error ("Unable to allocate memory for TIFFReadRGBA", instantiator); - - unwind.ximage = convert_EImage_to_XImage (device, width, height, unwind.eimage, - &unwind.pixels, &unwind.pixcount, &unwind.npixels); - if (!unwind.ximage) - signal_image_error ("TIFF conversion failed", instantiator); - } - /* Now create the pixmap and set up the image instance */ - init_image_instance_from_x_image (ii, unwind.ximage, dest_mask, - cmap, unwind.pixels, unwind.npixels, - instantiator); - /* Now that we've succeeded, we don't want the pixels - freed right now. They're kept around in the image instance - structure until it's destroyed. */ - unwind.npixels = 0; - unwind.pixcount = 0; - unbind_to (speccount, Qnil); -} - -#endif /* HAVE_TIFF */ - - #ifdef HAVE_XFACE /********************************************************************** @@ -4164,54 +2344,6 @@ IIFORMAT_VALID_KEYWORD (font, Q_foreground, check_valid_string); IIFORMAT_VALID_KEYWORD (font, Q_background, check_valid_string); -#ifdef HAVE_JPEG - INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (jpeg, "jpeg"); - - IIFORMAT_HAS_METHOD (jpeg, validate); - IIFORMAT_HAS_METHOD (jpeg, normalize); - IIFORMAT_HAS_METHOD (jpeg, possible_dest_types); - IIFORMAT_HAS_METHOD (jpeg, instantiate); - - IIFORMAT_VALID_KEYWORD (jpeg, Q_data, check_valid_string); - IIFORMAT_VALID_KEYWORD (jpeg, Q_file, check_valid_string); -#endif - -#ifdef HAVE_GIF - INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (gif, "gif"); - - IIFORMAT_HAS_METHOD (gif, validate); - IIFORMAT_HAS_METHOD (gif, normalize); - IIFORMAT_HAS_METHOD (gif, possible_dest_types); - IIFORMAT_HAS_METHOD (gif, instantiate); - - IIFORMAT_VALID_KEYWORD (gif, Q_data, check_valid_string); - IIFORMAT_VALID_KEYWORD (gif, Q_file, check_valid_string); -#endif - -#ifdef HAVE_PNG - INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (png, "png"); - - IIFORMAT_HAS_METHOD (png, validate); - IIFORMAT_HAS_METHOD (png, normalize); - IIFORMAT_HAS_METHOD (png, possible_dest_types); - IIFORMAT_HAS_METHOD (png, instantiate); - - IIFORMAT_VALID_KEYWORD (png, Q_data, check_valid_string); - IIFORMAT_VALID_KEYWORD (png, Q_file, check_valid_string); -#endif - -#ifdef HAVE_TIFF - INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (tiff, "tiff"); - - IIFORMAT_HAS_METHOD (tiff, validate); - IIFORMAT_HAS_METHOD (tiff, normalize); - IIFORMAT_HAS_METHOD (tiff, possible_dest_types); - IIFORMAT_HAS_METHOD (tiff, instantiate); - - IIFORMAT_VALID_KEYWORD (tiff, Q_data, check_valid_string); - IIFORMAT_VALID_KEYWORD (tiff, Q_file, check_valid_string); -#endif - #ifdef HAVE_XFACE INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (xface, "xface"); @@ -4242,22 +2374,6 @@ void vars_of_glyphs_x (void) { -#ifdef HAVE_JPEG - Fprovide (Qjpeg); -#endif - -#ifdef HAVE_GIF - Fprovide (Qgif); -#endif - -#ifdef HAVE_PNG - Fprovide (Qpng); -#endif - -#ifdef HAVE_TIFF - Fprovide (Qtiff); -#endif - #ifdef HAVE_XFACE Fprovide (Qxface); #endif