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graphics/metapixel: Patched to build with libpng16 and giflib-5.1.
Signed-off-by: David Spencer <baildon.research@googlemail.com> Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
This commit is contained in:
David Spencer
Willy Sudiarto Raharjo
parent
78ed2440fd
commit
2796ef1f03
2 changed files with 262 additions and 0 deletions
258
graphics/metapixel/metapixel-rwimg.patch
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258
graphics/metapixel/metapixel-rwimg.patch
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@ -0,0 +1,258 @@
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diff -u -r metapixel-1.0.2/rwimg/rwgif.c metapixel-1.0.2-rwimg/rwimg/rwgif.c
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--- metapixel-1.0.2/rwimg/rwgif.c 2006-12-10 17:59:54.000000000 +0000
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+++ metapixel-1.0.2-rwimg/rwimg/rwgif.c 2015-08-27 16:46:56.402621517 +0100
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@@ -54,7 +54,7 @@
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assert(data != 0);
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- data->file = DGifOpenFileName(filename);
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+ data->file = DGifOpenFileName(filename, NULL);
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assert(data->file !=0);
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@@ -137,7 +137,7 @@
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}
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free(buffer);
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- assert(DGifCloseFile(data->file) == GIF_OK);
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+ assert(DGifCloseFile(data->file, NULL) == GIF_OK);
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return data;
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}
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diff -u -r metapixel-1.0.2/rwimg/rwpng.c metapixel-1.0.2-rwimg/rwimg/rwpng.c
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--- metapixel-1.0.2/rwimg/rwpng.c 2006-12-10 17:59:54.000000000 +0000
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+++ metapixel-1.0.2-rwimg/rwimg/rwpng.c 2015-08-27 16:44:12.337891932 +0100
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@@ -35,6 +35,7 @@
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png_structp png_ptr;
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png_infop info_ptr, end_info;
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int row_stride;
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+ int pixel_stride;
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int have_read;
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} png_data_t;
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@@ -42,10 +43,11 @@
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open_png_file_reading (const char *filename, int *width, int *height)
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{
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png_data_t *data = (png_data_t*)malloc(sizeof(png_data_t));
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+ int bit_depth, color_type;
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assert(data != 0);
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- data->file = fopen(filename, "r");
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+ data->file = fopen(filename, "rb");
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assert(data->file != 0);
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data->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
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@@ -57,19 +59,41 @@
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data->end_info = png_create_info_struct(data->png_ptr);
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assert(data->end_info != 0);
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- if (setjmp(data->png_ptr->jmpbuf))
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+ if (setjmp (png_jmpbuf (data->png_ptr)))
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assert(0);
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png_init_io(data->png_ptr, data->file);
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png_read_info(data->png_ptr, data->info_ptr);
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- *width = data->info_ptr->width;
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- *height = data->info_ptr->height;
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+ *width = png_get_image_width (data->png_ptr, data->info_ptr);
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+ *height = png_get_image_height (data->png_ptr, data->info_ptr);
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- assert(data->info_ptr->bit_depth == 8 || data->info_ptr->bit_depth == 16);
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- assert(data->info_ptr->color_type == PNG_COLOR_TYPE_RGB || data->info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA);
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- assert(data->info_ptr->interlace_type == PNG_INTERLACE_NONE);
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+ bit_depth = png_get_bit_depth (data->png_ptr, data->info_ptr);
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+ if (bit_depth != 8 && bit_depth != 16)
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+ {
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+ fprintf(stderr, "PNG files are only supported with bit depths 8 and 16.\n");
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+ /* FIXME: free stuff */
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+ return 0;
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+ }
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+
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+ color_type = png_get_color_type (data->png_ptr, data->info_ptr);
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+ if (color_type != PNG_COLOR_TYPE_RGB
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+ && color_type != PNG_COLOR_TYPE_RGB_ALPHA
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+ && color_type != PNG_COLOR_TYPE_GRAY
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+ && color_type != PNG_COLOR_TYPE_GRAY_ALPHA)
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+ {
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+ fprintf(stderr, "PNG files are only supported in RGB and Gray, with or without alpha.\n");
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+ /* FIXME: free stuff */
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+ return 0;
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+ }
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+
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+ if (png_get_interlace_type (data->png_ptr, data->info_ptr) != PNG_INTERLACE_NONE)
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+ {
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+ fprintf(stderr, "Interlaced PNG files are not supported.\n");
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+ /* FIXME: free stuff */
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+ return 0;
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+ }
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data->have_read = 0;
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@@ -83,30 +107,44 @@
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int i;
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int bps, spp;
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unsigned char *row;
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+ int color_type, width;
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- if (setjmp(data->png_ptr->jmpbuf))
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+ if (setjmp (png_jmpbuf (data->png_ptr)))
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assert(0);
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- if (data->info_ptr->color_type == PNG_COLOR_TYPE_RGB)
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+ color_type = png_get_color_type (data->png_ptr, data->info_ptr);
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+ if (color_type == PNG_COLOR_TYPE_GRAY)
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+ spp = 1;
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+ else if (color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
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+ spp = 2;
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+ else if (color_type == PNG_COLOR_TYPE_RGB)
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spp = 3;
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else
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spp = 4;
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- if (data->info_ptr->bit_depth == 16)
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+ if (png_get_bit_depth (data->png_ptr, data->info_ptr) == 16)
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bps = 2;
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else
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bps = 1;
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- row = (unsigned char*)malloc(data->info_ptr->width * spp * bps);
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+ width = png_get_image_width (data->png_ptr, data->info_ptr);
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+ row = (unsigned char*)malloc (width * spp * bps);
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for (i = 0; i < num_lines; ++i)
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{
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int j, channel;
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png_read_row(data->png_ptr, (png_bytep)row, 0);
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- for (j = 0; j < data->info_ptr->width; ++j)
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- for (channel = 0; channel < 3; ++channel)
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- lines[i * data->info_ptr->width * 3 + j * 3 + channel] = row[j * spp * bps + channel * bps];
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+
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+ if (spp <= 2)
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+ for (j = 0; j < width; ++j)
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+ for (channel = 0; channel < 3; ++channel)
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+ lines[i * width * 3 + j * 3 + channel] = row[j * spp * bps];
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+ else
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+ for (j = 0; j < width; ++j)
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+ for (channel = 0; channel < 3; ++channel)
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+ lines[i * width * 3 + j * 3 + channel]
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+ = row[j * spp * bps + channel * bps];
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}
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free(row);
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@@ -119,7 +157,7 @@
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{
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png_data_t *data = (png_data_t*)_data;
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- if (setjmp(data->png_ptr->jmpbuf))
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+ if (setjmp (png_jmpbuf (data->png_ptr)))
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assert(0);
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if (data->have_read)
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@@ -137,9 +175,9 @@
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assert(data != 0);
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- assert(pixel_stride == 3 || pixel_stride == 4);
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+ assert(pixel_stride >= 3);
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- data->file = fopen(filename, "w");
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+ data->file = fopen(filename, "wb");
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assert(data->file != 0);
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data->png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
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@@ -148,7 +186,7 @@
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data->info_ptr = png_create_info_struct(data->png_ptr);
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assert(data->info_ptr != 0);
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- if (setjmp(data->png_ptr->jmpbuf))
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+ if (setjmp (png_jmpbuf (data->png_ptr)))
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assert(0);
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if (pixel_stride == 4)
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@@ -156,21 +194,13 @@
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png_init_io(data->png_ptr, data->file);
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- data->info_ptr->width = width;
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- data->info_ptr->height = height;
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- data->info_ptr->valid = 0;
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- data->info_ptr->rowbytes = width * 3;
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- data->info_ptr->palette = 0;
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- data->info_ptr->num_palette = 0;
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- data->info_ptr->num_trans = 0;
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- data->info_ptr->bit_depth = 8;
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- data->info_ptr->color_type = PNG_COLOR_TYPE_RGB;
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- data->info_ptr->compression_type = PNG_COMPRESSION_TYPE_DEFAULT;
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- data->info_ptr->filter_type = PNG_FILTER_TYPE_DEFAULT;
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- data->info_ptr->interlace_type = PNG_INTERLACE_NONE;
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+ png_set_IHDR (data->png_ptr, data->info_ptr,
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+ width, height, 8, PNG_COLOR_TYPE_RGB,
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+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
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png_write_info(data->png_ptr, data->info_ptr);
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+ data->pixel_stride = pixel_stride;
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data->row_stride = row_stride;
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return data;
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@@ -180,13 +210,45 @@
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png_write_lines (void *_data, unsigned char *lines, int num_lines)
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{
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png_data_t *data = (png_data_t*)_data;
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+ unsigned char *packed_line;
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int i;
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+ int width;
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- if (setjmp(data->png_ptr->jmpbuf))
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+ if (setjmp (png_jmpbuf (data->png_ptr)))
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assert(0);
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+ width = png_get_image_width (data->png_ptr, data->info_ptr);
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+ if (data->pixel_stride != 3)
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+ {
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+ packed_line = (unsigned char*)malloc(width * 3);
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+ assert(packed_line != 0);
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+ }
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+ else
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+ packed_line = 0;
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+
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for (i = 0; i < num_lines; ++i)
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- png_write_row(data->png_ptr, (png_bytep)(lines + i * data->row_stride));
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+ {
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+ unsigned char *p = lines + i * data->row_stride;
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+
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+ if (packed_line != 0)
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+ {
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+ int j;
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+
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+ for (j = 0; j < width; ++j)
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+ {
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+ packed_line[j * 3 + 0] = p[j * data->pixel_stride + 0];
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+ packed_line[j * 3 + 1] = p[j * data->pixel_stride + 1];
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+ packed_line[j * 3 + 2] = p[j * data->pixel_stride + 2];
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+ }
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+
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+ p = packed_line;
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+ }
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+
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+ png_write_row(data->png_ptr, (png_bytep)p);
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+ }
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+
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+ if (packed_line != 0)
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+ free(packed_line);
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}
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void
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@@ -194,7 +256,7 @@
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{
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png_data_t *data = (png_data_t*)_data;
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- if (setjmp(data->png_ptr->jmpbuf))
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+ if (setjmp (png_jmpbuf (data->png_ptr)))
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assert(0);
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png_write_end(data->png_ptr, data->info_ptr);
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@ -51,6 +51,10 @@ find -L . \
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\( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
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-exec chmod 644 {} \;
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# Fix for libpng-1.5 and giflib-5.1 from rwimg git submodule
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# https://github.com/schani/rwimg
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patch -p1 < $CWD/metapixel-rwimg.patch
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mkdir -p $PKG/usr/man/man1
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make MANDIR=$PKG/man LDOPTS="-L/usr/X11R6/lib${LIBDIRSUFFIX}"
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