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-rw-r--r--system/png/Makefile11
-rw-r--r--system/png/pdp_png.c405
2 files changed, 0 insertions, 416 deletions
diff --git a/system/png/Makefile b/system/png/Makefile
deleted file mode 100644
index 9122da6..0000000
--- a/system/png/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-
-OBJECTS = pdp_png.o
-
-
-include ../../Makefile.config
-
-all: $(OBJECTS)
-
-clean:
- rm -f *~
- rm -f *.o
diff --git a/system/png/pdp_png.c b/system/png/pdp_png.c
deleted file mode 100644
index 573d42c..0000000
--- a/system/png/pdp_png.c
+++ /dev/null
@@ -1,405 +0,0 @@
-
-/*
- * Pure Data Packet system module. - png glue code
- * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include "pdp.h"
-
-// this is an optional module
-#include "pdp_config.h"
-
-
-#ifdef HAVE_PDP_PNG
-//if 0
-
-#include <png.h>
-
-#define READING 1
-#define WRITING 2
-#define SIG_BYTES 8
-
-#define D if(0)
-
-typedef struct
-{
- FILE *x_fp;
-
- int x_kindof; //READING or WRITING
- png_structp x_png;
- png_infop x_info;
- png_infop x_end_info;
-
- png_uint_32 x_width;
- png_uint_32 x_height;
- int x_bit_depth;
- int x_color_type;
- int x_interlace_type;
- int x_compression_type;
- int x_filter_type;
-
- int x_pdp_bitmap_type;
- int x_packet;
-
-} t_png_image;
-
-static t_png_image *_init(t_png_image *x)
-{
- x->x_png = 0;
- x->x_info = 0;
- x->x_end_info = 0;
- x->x_fp = 0;
- x->x_packet = -1;
- return x;
-}
-
-static int _cleanup(t_png_image *x)
-{
- if (!x) return 1;
- pdp_packet_mark_unused(x->x_packet);
- if (x->x_png)
- switch(x->x_kindof){
- case READING: png_destroy_read_struct(&x->x_png, &x->x_info, &x->x_end_info); break;
- case WRITING: png_destroy_write_struct(&x->x_png, &x->x_info); break;
- default: exit(1);
- }
- if (x->x_fp) fclose(x->x_fp);
- return 1;
-}
-
-static int _open_read(t_png_image* x, char *file)
-{
- char header[SIG_BYTES];
- int is_png;
-
- x->x_fp = fopen(file, "r");
- if (!x->x_fp) {
- D post("can't open %s for reading", file);
- return 0;
- }
- fread(header, 1, SIG_BYTES, x->x_fp);
- is_png = !png_sig_cmp(header, 0, SIG_BYTES);
-
- D post("%s is %s png file", file, is_png ? "a" : "not a");
-
- return is_png;
-}
-
-static int _open_write(t_png_image* x, char *file)
-{
- char header[SIG_BYTES];
- int is_png;
-
- x->x_fp = fopen(file, "w");
- if (!x->x_fp) {
- D post("can't open %s for writing", file);
- return 0;
- }
-
- return 1;
-}
-
-/* progress callback */
-
-static void _row_callback(png_structp p, png_uint_32 row, int pass)
-{
- fprintf(stderr, ".");
-}
-
-static int _initio_read(t_png_image *x)
-{
- png_init_io(x->x_png, x->x_fp);
- png_set_sig_bytes(x->x_png, SIG_BYTES);
- D png_set_read_status_fn(x->x_png, _row_callback);
- return 1;
-
-}
-
-static int _initio_write(t_png_image *x)
-{
- png_init_io(x->x_png, x->x_fp);
- D png_set_write_status_fn(x->x_png, _row_callback);
-
- return 1;
-
-}
-
-static int _checkimagetype(t_png_image *x)
-{
- png_read_info(x->x_png, x->x_info);
- png_get_IHDR(x->x_png, x->x_info, &x->x_width, &x->x_height,
- &x->x_bit_depth, &x->x_color_type, &x->x_interlace_type,
- &x->x_compression_type, &x->x_filter_type);
-
- D post("image info: w=%d, h=%d, depth=%d, type=%d",
- (int)x->x_width, (int)x->x_height, (int)x->x_bit_depth,
- (int)x->x_color_type);
-
-
- /* handle paletted images: convert to 8 bit RGB(A) */
- if (x->x_color_type == PNG_COLOR_TYPE_PALETTE &&
- x->x_bit_depth <= 8) {
- png_set_expand(x->x_png);
- D post("convert palette");
-
- /* check if there's an alpha channel and set PDP_BITMAP type */
- x->x_pdp_bitmap_type =
- (png_get_valid(x->x_png, x->x_info, PNG_INFO_tRNS)) ?
- PDP_BITMAP_RGBA : PDP_BITMAP_RGB;
-
- return 1;
- }
-
- /* handle bitdepth */
- if (x->x_bit_depth < 8) {
- png_set_expand(x->x_png);
- D post("convert greyscale to 8 bit");
- }
- if (x->x_bit_depth == 16){
- D post("stripping 16 bit to 8 bit");
- png_set_strip_16(x->x_png);
- }
-
-
- /* handle greyscale images */
- if (x->x_color_type == PNG_COLOR_TYPE_GRAY){
- x->x_pdp_bitmap_type = PDP_BITMAP_GREY;
- if (png_get_valid(x->x_png, x->x_info, PNG_INFO_tRNS)){
- D post("no support for greyscale images with alpha info");
- return 0;
- }
- return 1;
- }
-
- /* handle RGB imges */
- if (x->x_color_type = PNG_COLOR_TYPE_RGB){
- x->x_pdp_bitmap_type = PDP_BITMAP_RGB;
- return 1;
- }
-
- /* handle RGBA imges */
- if (x->x_color_type = PNG_COLOR_TYPE_RGBA){
- x->x_pdp_bitmap_type = PDP_BITMAP_RGBA;
- return 1;
- }
-
-
- /* can't handle image type */
- D post("image type not supported");
- return 0;
-
-}
-
-#define user_error_ptr NULL
-#define user_error_fn NULL
-#define user_warning_fn NULL
-
-static int _buildstruct_read(t_png_image *x)
-{
- x->x_kindof = READING;
-
- if (!(x->x_png = png_create_read_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn))) return 0;
-
- if (!(x->x_info = png_create_info_struct(x->x_png))) return 0;
- if (!(x->x_end_info = png_create_info_struct(x->x_png))) return 0;
-
- return 1;
-}
-
-static int _buildstruct_write(t_png_image *x)
-{
- x->x_kindof = WRITING;
-
- if (!(x->x_png = png_create_write_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn))) return 0;
-
- if (!(x->x_info = png_create_info_struct(x->x_png))) return 0;
-
- return 1;
-}
-
-static int _getimagedata(t_png_image *x)
-{
- int nbchans = 0;
- char *image_data;
- png_bytep row_pointers[x->x_height];
- png_uint_32 i;
-
- D post("reading %d rows ", (int)x->x_height);
-
- switch (x->x_pdp_bitmap_type){
- case PDP_BITMAP_GREY: nbchans = 1; break;
- case PDP_BITMAP_RGB: nbchans = 3; break;
- case PDP_BITMAP_RGBA: nbchans = 4; break;
- default:
- return 0;
- }
-
- x->x_packet =
- pdp_packet_new_bitmap(x->x_pdp_bitmap_type, x->x_width, x->x_height);
- if (!(image_data = pdp_packet_data(x->x_packet))) return 0;
-
- for(i=0; i<x->x_height; i++)
- row_pointers[i] = image_data + nbchans * i * x->x_width;
-
- png_read_image(x->x_png, row_pointers);
-
- D post("DONE");
-
- return 1;
-}
-
-static int _saveimagedata(t_png_image *x, int packet)
-{
- png_bytep *row_pointers;
- png_uint_32 i;
- int nbchans;
- t_pdp *h = pdp_packet_header(packet);
- char *image_data = (char *)pdp_packet_data(packet);
-
- if (!h) return 0;
- if (PDP_BITMAP != h->type) return 0;
- if (!image_data) return 0;
-
- x->x_width = h->info.bitmap.width;
- x->x_height = h->info.bitmap.height;
-
- switch(h->info.image.encoding){
- case PDP_BITMAP_GREY: x->x_color_type = PNG_COLOR_TYPE_GRAY; nbchans = 1; break;
- case PDP_BITMAP_RGB: x->x_color_type = PNG_COLOR_TYPE_RGB; nbchans = 3; break;
- case PDP_BITMAP_RGBA: x->x_color_type = PNG_COLOR_TYPE_RGBA; nbchans = 4; break;
- default: return 0;
- }
-
- png_set_IHDR(x->x_png, x->x_info, x->x_width, x->x_height, 8,
- x->x_color_type, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
- PNG_FILTER_TYPE_DEFAULT);
-
- png_write_info(x->x_png, x->x_info);
-
- D post("writing %d rows ", (int)x->x_height);
-
- row_pointers = (png_bytep *)pdp_alloc(sizeof(png_bytep) * x->x_height);
- for(i=0; i<x->x_height; i++)
- row_pointers[i] = image_data + nbchans * i * x->x_width;
-
- png_write_image(x->x_png, row_pointers);
- png_write_end(x->x_png, x->x_info);
- pdp_dealloc(row_pointers);
-
- D post("DONE");
-
- return 1;
-}
-
-
-
-/* simple functions to load and save png images */
-
-int pdp_packet_bitmap_from_png_file(char *filename)
-{
- int packet = -1;
- t_png_image _x;
- t_png_image *x = &_x;
-
- if (!_init(x)) goto exit;
- if (!_open_read(x, filename)) goto exit;
- if (!_buildstruct_read(x)) goto exit;
- if (!_initio_read(x)) goto exit;
- if (!_checkimagetype(x)) goto exit;
- if (!_getimagedata(x)) goto exit;
-
- packet = x->x_packet;
- x->x_packet = -1;
- _cleanup(x);
- return packet;
- exit:
- _cleanup(x);
- return -1;
-
-}
-
-
-
-int pdp_packet_bitmap_save_png_file(int packet, char *filename)
-{
-
- t_png_image _x;
- t_png_image *x = &_x;
-
- if (!_init(x)) goto exit;
- if (!_open_write(x, filename)) goto exit;
- if (!_buildstruct_write(x)) goto exit;
- if (!_initio_write(x)) goto exit;
- if (!_saveimagedata(x, packet)) goto exit;
-
- _cleanup(x);
- return 1;
- exit:
- _cleanup(x);
- return 0;
-
-}
-
-
-
-#else //PDP_HAVE_PNG
-int pdp_packet_bitmap_save_png_file(int packet, char *filename)
-{
- post("WARNING: no png support, can't save png file %s", filename);
- return 0;
-}
-
-int pdp_packet_bitmap_from_png_file(char *filename)
-{
- post("WARNING: no png support, can't load png file %s", filename);
- return -1;
-}
-
-
-#endif //PDP_HAVE_PNG
-
-
-
-
-
-
-
-
-
-
-
-
-
-#if 0
-int main(int argc, char **argv)
-{
- char *image = 0;
-
- if (argc != 2)
- post("usage: %s <png file>", argv[0]);
- else
- image = load_png(argv[1]);
-
- post ("%s", image ? "OK" : "ERROR");
-
-}
-#endif
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