parent
bcacef19b0
commit
f02a649a3c
@ -1,5 +1,9 @@ |
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libconfig_parser_la_LIBADD = $(IMAGE_LIBS)
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AM_CPPFLAGS = $(IMAGE_CFLAGS)
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noinst_LTLIBRARIES = libconfig-parser.la
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libconfig_parser_la_SOURCES = \
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config-parser.c \
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option-parser.c \
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image-loader.c \
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config-parser.h
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@ -0,0 +1,379 @@ |
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/*
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* Copyright © 2008-2012 Kristian Høgsberg |
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* Copyright © 2012 Intel Corporation |
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* |
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* Permission to use, copy, modify, distribute, and sell this software and its |
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* documentation for any purpose is hereby granted without fee, provided that |
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* the above copyright notice appear in all copies and that both that copyright |
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* notice and this permission notice appear in supporting documentation, and |
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* that the name of the copyright holders not be used in advertising or |
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* publicity pertaining to distribution of the software without specific, |
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* written prior permission. The copyright holders make no representations |
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* about the suitability of this software for any purpose. It is provided "as |
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* is" without express or implied warranty. |
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* |
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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* OF THIS SOFTWARE. |
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*/ |
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#include "../config.h" |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <jpeglib.h> |
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#include <png.h> |
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#include <pixman.h> |
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#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0]) |
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#ifdef HAVE_WEBP |
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#include <webp/decode.h> |
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#endif |
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static int |
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stride_for_width(int width) |
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{ |
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return width * 4; |
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} |
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static void |
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swizzle_row(JSAMPLE *row, JDIMENSION width) |
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{ |
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JSAMPLE *s; |
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uint32_t *d; |
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s = row + (width - 1) * 3; |
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d = (uint32_t *) (row + (width - 1) * 4); |
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while (s >= row) { |
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*d = 0xff000000 | (s[0] << 16) | (s[1] << 8) | (s[2] << 0); |
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s -= 3; |
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d--; |
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} |
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} |
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static void |
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error_exit(j_common_ptr cinfo) |
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{ |
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longjmp(cinfo->client_data, 1); |
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} |
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static pixman_image_t * |
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load_jpeg(FILE *fp) |
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{ |
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struct jpeg_decompress_struct cinfo; |
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struct jpeg_error_mgr jerr; |
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int stride, i, first; |
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JSAMPLE *data, *rows[4]; |
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jmp_buf env; |
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cinfo.err = jpeg_std_error(&jerr); |
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jerr.error_exit = error_exit; |
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cinfo.client_data = env; |
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if (setjmp(env)) |
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return NULL; |
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jpeg_create_decompress(&cinfo); |
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jpeg_stdio_src(&cinfo, fp); |
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jpeg_read_header(&cinfo, TRUE); |
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cinfo.out_color_space = JCS_RGB; |
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jpeg_start_decompress(&cinfo); |
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stride = cinfo.output_width * 4; |
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data = malloc(stride * cinfo.output_height); |
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if (data == NULL) { |
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fprintf(stderr, "couldn't allocate image data\n"); |
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return NULL; |
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} |
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while (cinfo.output_scanline < cinfo.output_height) { |
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first = cinfo.output_scanline; |
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for (i = 0; i < ARRAY_LENGTH(rows); i++) |
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rows[i] = data + (first + i) * stride; |
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jpeg_read_scanlines(&cinfo, rows, ARRAY_LENGTH(rows)); |
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for (i = 0; first + i < cinfo.output_scanline; i++) |
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swizzle_row(rows[i], cinfo.output_width); |
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} |
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jpeg_finish_decompress(&cinfo); |
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jpeg_destroy_decompress(&cinfo); |
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return pixman_image_create_bits(PIXMAN_a8r8g8b8, |
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cinfo.output_width, |
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cinfo.output_height, |
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(uint32_t *) data, stride); |
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} |
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static inline int |
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multiply_alpha(int alpha, int color) |
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{ |
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int temp = (alpha * color) + 0x80; |
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return ((temp + (temp >> 8)) >> 8); |
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} |
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static void |
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premultiply_data(png_structp png, |
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png_row_infop row_info, |
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png_bytep data) |
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{ |
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unsigned int i; |
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png_bytep p; |
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for (i = 0, p = data; i < row_info->rowbytes; i += 4, p += 4) { |
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png_byte alpha = p[3]; |
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uint32_t w; |
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if (alpha == 0) { |
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w = 0; |
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} else { |
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png_byte red = p[0]; |
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png_byte green = p[1]; |
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png_byte blue = p[2]; |
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if (alpha != 0xff) { |
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red = multiply_alpha(alpha, red); |
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green = multiply_alpha(alpha, green); |
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blue = multiply_alpha(alpha, blue); |
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} |
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w = (alpha << 24) | (red << 16) | (green << 8) | (blue << 0); |
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} |
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* (uint32_t *) p = w; |
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} |
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} |
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static void |
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read_func(png_structp png, png_bytep data, png_size_t size) |
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{ |
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FILE *fp = png_get_io_ptr(png); |
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if (fread(data, 1, size, fp) < 0) |
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png_error(png, NULL); |
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} |
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static void |
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png_error_callback(png_structp png, png_const_charp error_msg) |
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{ |
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longjmp (png_jmpbuf (png), 1); |
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} |
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static pixman_image_t * |
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load_png(FILE *fp) |
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{ |
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png_struct *png; |
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png_info *info; |
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png_byte *data = NULL; |
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png_byte **row_pointers = NULL; |
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png_uint_32 width, height; |
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int depth, color_type, interlace, stride; |
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unsigned int i; |
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png = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, |
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png_error_callback, NULL); |
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if (!png) |
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return NULL; |
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info = png_create_info_struct(png); |
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if (!info) { |
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png_destroy_read_struct(&png, &info, NULL); |
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return NULL; |
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} |
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if (setjmp(png_jmpbuf(png))) { |
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if (data) |
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free(data); |
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if (row_pointers) |
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free(row_pointers); |
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png_destroy_read_struct(&png, &info, NULL); |
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return NULL; |
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} |
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png_set_read_fn(png, fp, read_func); |
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png_read_info(png, info); |
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png_get_IHDR(png, info, |
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&width, &height, &depth, |
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&color_type, &interlace, NULL, NULL); |
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if (color_type == PNG_COLOR_TYPE_PALETTE) |
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png_set_palette_to_rgb(png); |
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if (color_type == PNG_COLOR_TYPE_GRAY) |
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png_set_expand_gray_1_2_4_to_8(png); |
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if (png_get_valid(png, info, PNG_INFO_tRNS)) |
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png_set_tRNS_to_alpha(png); |
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if (depth == 16) |
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png_set_strip_16(png); |
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if (depth < 8) |
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png_set_packing(png); |
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if (color_type == PNG_COLOR_TYPE_GRAY || |
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color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
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png_set_gray_to_rgb(png); |
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if (interlace != PNG_INTERLACE_NONE) |
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png_set_interlace_handling(png); |
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png_set_filler(png, 0xff, PNG_FILLER_AFTER); |
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png_set_read_user_transform_fn(png, premultiply_data); |
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png_read_update_info(png, info); |
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png_get_IHDR(png, info, |
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&width, &height, &depth, |
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&color_type, &interlace, NULL, NULL); |
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stride = stride_for_width(width); |
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data = malloc(stride * height); |
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if (!data) { |
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png_destroy_read_struct(&png, &info, NULL); |
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return NULL; |
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} |
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row_pointers = malloc(height * sizeof row_pointers[0]); |
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if (row_pointers == NULL) { |
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free(data); |
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png_destroy_read_struct(&png, &info, NULL); |
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return NULL; |
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} |
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for (i = 0; i < height; i++) |
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row_pointers[i] = &data[i * stride]; |
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png_read_image(png, row_pointers); |
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png_read_end(png, info); |
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free(row_pointers); |
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png_destroy_read_struct(&png, &info, NULL); |
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return pixman_image_create_bits(PIXMAN_a8r8g8b8, width, height, |
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(uint32_t *) data, stride); |
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} |
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#ifdef HAVE_WEBP |
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static pixman_image_t * |
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load_webp(FILE *fp) |
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{ |
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WebPDecoderConfig config; |
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uint8_t buffer[16 * 1024]; |
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int len; |
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VP8StatusCode status; |
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WebPIDecoder *idec; |
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if (!WebPInitDecoderConfig(&config)) { |
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fprintf(stderr, "Library version mismatch!\n"); |
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return NULL; |
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} |
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/* webp decoding api doesn't seem to specify a min size that's
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usable for GetFeatures, but 256 works... */ |
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len = fread(buffer, 1, 256, fp); |
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status = WebPGetFeatures(buffer, len, &config.input); |
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if (status != VP8_STATUS_OK) { |
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fprintf(stderr, "failed to parse webp header\n"); |
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WebPFreeDecBuffer(&config.output); |
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return NULL; |
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} |
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config.output.colorspace = MODE_BGRA; |
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config.output.u.RGBA.stride = stride_for_width(config.input.width); |
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config.output.u.RGBA.size = |
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config.output.u.RGBA.stride * config.input.height; |
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config.output.u.RGBA.rgba = |
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malloc(config.output.u.RGBA.stride * config.input.height); |
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config.output.is_external_memory = 1; |
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if (!config.output.u.RGBA.rgba) { |
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WebPFreeDecBuffer(&config.output); |
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return NULL; |
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} |
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rewind(fp); |
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idec = WebPINewDecoder(&config.output); |
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if (!idec) { |
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WebPFreeDecBuffer(&config.output); |
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return NULL; |
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} |
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while (!feof(fp)) { |
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len = fread(buffer, 1, sizeof buffer, fp); |
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status = WebPIAppend(idec, buffer, len); |
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if (status != VP8_STATUS_OK) { |
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fprintf(stderr, "webp decode status %d\n", status); |
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WebPIDelete(idec); |
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WebPFreeDecBuffer(&config.output); |
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return NULL; |
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} |
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} |
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WebPIDelete(idec); |
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WebPFreeDecBuffer(&config.output); |
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return pixman_image_create_bits(PIXMAN_a8r8g8b8, |
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config.input.width, |
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config.input.height, |
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(uint32_t *) config.output.u.RGBA.rgba, |
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config.output.u.RGBA.stride); |
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} |
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#endif |
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struct image_loader { |
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char header[4]; |
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int header_size; |
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pixman_image_t *(*load)(FILE *fp); |
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}; |
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static const struct image_loader loaders[] = { |
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{ { 0x89, 'P', 'N', 'G' }, 4, load_png }, |
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{ { 0xff, 0xd8 }, 2, load_jpeg }, |
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#ifdef HAVE_WEBP |
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{ { 'R', 'I', 'F', 'F' }, 4, load_webp } |
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#endif |
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}; |
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pixman_image_t * |
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load_image(const char *filename) |
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{ |
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pixman_image_t *image; |
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unsigned char header[4]; |
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FILE *fp; |
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int i; |
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fp = fopen(filename, "rb"); |
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if (fp == NULL) |
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return NULL; |
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fread(header, sizeof header, 1, fp); |
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rewind(fp); |
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for (i = 0; i < ARRAY_LENGTH(loaders); i++) { |
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if (memcmp(header, loaders[i].header, |
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loaders[i].header_size) == 0) { |
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image = loaders[i].load(fp); |
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break; |
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} |
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} |
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fclose(fp); |
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if (i == ARRAY_LENGTH(loaders)) { |
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fprintf(stderr, "unrecognized file header for %s: " |
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"0x%02x 0x%02x 0x%02x 0x%02x\n", |
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filename, header[0], header[1], header[2], header[3]); |
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image = NULL; |
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} |
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return image; |
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} |
@ -1,177 +0,0 @@ |
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/*
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* Copyright © 2011 Intel Corporation |
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* |
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* Permission to use, copy, modify, distribute, and sell this software and |
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* its documentation for any purpose is hereby granted without fee, provided |
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* that the above copyright notice appear in all copies and that both that |
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* copyright notice and this permission notice appear in supporting |
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* documentation, and that the name of the copyright holders not be used in |
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* advertising or publicity pertaining to distribution of the software |
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* without specific, written prior permission. The copyright holders make |
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* no representations about the suitability of this software for any |
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* purpose. It is provided "as is" without express or implied warranty. |
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* |
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <stdint.h> |
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#include <errno.h> |
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#include <png.h> |
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#include "compositor.h" |
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static inline int |
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multiply_alpha(int alpha, int color) |
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{ |
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int temp = (alpha * color) + 0x80; |
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return ((temp + (temp >> 8)) >> 8); |
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} |
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static void |
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premultiply_data(png_structp png, |
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png_row_infop row_info, |
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png_bytep data) |
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{ |
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unsigned int i; |
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png_bytep p; |
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for (i = 0, p = data; i < row_info->rowbytes; i += 4, p += 4) { |
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png_byte alpha = p[3]; |
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uint32_t w; |
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|
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if (alpha == 0) { |
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w = 0; |
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} else { |
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png_byte red = p[0]; |
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png_byte green = p[1]; |
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png_byte blue = p[2]; |
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if (alpha != 0xff) { |
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red = multiply_alpha(alpha, red); |
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green = multiply_alpha(alpha, green); |
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blue = multiply_alpha(alpha, blue); |
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} |
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w = (alpha << 24) | (red << 16) | (green << 8) | (blue << 0); |
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} |
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* (uint32_t *) p = w; |
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} |
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} |
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static void |
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read_func(png_structp png, png_bytep data, png_size_t size) |
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{ |
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FILE *fp = png_get_io_ptr(png); |
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|
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if (fread(data, 1, size, fp) < 0) |
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png_error(png, NULL); |
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} |
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WL_EXPORT uint32_t * |
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weston_load_image(const char *filename, |
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int32_t *width_arg, int32_t *height_arg, |
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uint32_t *stride_arg) |
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{ |
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png_struct *png; |
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png_info *info; |
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png_byte *data; |
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png_byte **row_pointers = NULL; |
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png_uint_32 width, height; |
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int depth, color_type, interlace, stride; |
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unsigned int i; |
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FILE *fp; |
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|
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fp = fopen(filename, "rb"); |
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if (fp == NULL) |
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return NULL; |
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png = png_create_read_struct(PNG_LIBPNG_VER_STRING, |
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NULL, NULL, NULL); |
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if (!png) { |
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fclose(fp); |
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return NULL; |
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} |
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|
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info = png_create_info_struct(png); |
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if (!info) { |
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png_destroy_read_struct(&png, &info, NULL); |
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fclose(fp); |
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return NULL; |
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} |
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|
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png_set_read_fn(png, fp, read_func); |
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png_read_info(png, info); |
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png_get_IHDR(png, info, |
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&width, &height, &depth, |
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&color_type, &interlace, NULL, NULL); |
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|
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if (color_type == PNG_COLOR_TYPE_PALETTE) |
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png_set_palette_to_rgb(png); |
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|
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if (color_type == PNG_COLOR_TYPE_GRAY) |
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png_set_expand_gray_1_2_4_to_8(png); |
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|
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if (png_get_valid(png, info, PNG_INFO_tRNS)) |
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png_set_tRNS_to_alpha(png); |
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|
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if (depth == 16) |
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png_set_strip_16(png); |
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|
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if (depth < 8) |
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png_set_packing(png); |
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|
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if (color_type == PNG_COLOR_TYPE_GRAY || |
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color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
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png_set_gray_to_rgb(png); |
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|
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if (interlace != PNG_INTERLACE_NONE) |
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png_set_interlace_handling(png); |
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|
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png_set_filler(png, 0xff, PNG_FILLER_AFTER); |
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png_set_read_user_transform_fn(png, premultiply_data); |
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png_read_update_info(png, info); |
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png_get_IHDR(png, info, |
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&width, &height, &depth, |
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&color_type, &interlace, NULL, NULL); |
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|
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stride = width * 4; |
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data = malloc(stride * height); |
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if (!data) { |
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png_destroy_read_struct(&png, &info, NULL); |
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fclose(fp); |
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return NULL; |
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} |
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|
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row_pointers = malloc(height * sizeof row_pointers[0]); |
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if (row_pointers == NULL) { |
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free(data); |
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png_destroy_read_struct(&png, &info, NULL); |
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fclose(fp); |
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return NULL; |
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} |
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|
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for (i = 0; i < height; i++) |
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row_pointers[i] = &data[i * stride]; |
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|
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png_read_image(png, row_pointers); |
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png_read_end(png, info); |
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|
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free(row_pointers); |
||||
png_destroy_read_struct(&png, &info, NULL); |
||||
fclose(fp); |
||||
|
||||
*width_arg = width; |
||||
*height_arg = height; |
||||
*stride_arg = stride; |
||||
|
||||
return (uint32_t *) data; |
||||
} |
Loading…
Reference in new issue