fix jmp issue in png image.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@149 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
parent
48c747e0c8
commit
4148f59352
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@ -743,8 +743,6 @@ void rtgui_dc_draw_arc(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16
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{
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rt_int16_t cx = 0;
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rt_int16_t cy = r;
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rt_int16_t ocx = (rt_int16_t) 0xffff;
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rt_int16_t ocy = (rt_int16_t) 0xffff;
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rt_int16_t df = 1 - r;
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rt_int16_t d_e = 3;
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rt_int16_t d_se = -2 * r + 5;
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@ -0,0 +1,245 @@
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#include "libpng/png.h"
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#include <rtthread.h>
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#include <rtgui/image_hdc.h>
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#include <rtgui/rtgui_system.h>
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#define HDC_MAGIC_LEN 4
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struct rtgui_image_hdc
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{
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rt_bool_t is_loaded;
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struct rtgui_filerw* filerw;
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/* hdc image information */
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rt_uint32_t width, height;
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rt_uint32_t pitch;
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rt_uint8_t *pixels;
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};
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static rt_bool_t rtgui_image_hdc_check(struct rtgui_filerw* file);
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static rt_bool_t rtgui_image_hdc_load(struct rtgui_image* image, struct rtgui_filerw* file, rt_bool_t load);
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static void rtgui_image_hdc_unload(struct rtgui_image* image);
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static void rtgui_image_hdc_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect);
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struct rtgui_image_engine rtgui_image_hdc_engine =
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{
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"hdc",
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{ RT_NULL },
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rtgui_image_hdc_check,
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rtgui_image_hdc_load,
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rtgui_image_hdc_unload,
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rtgui_image_hdc_blit
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};
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static rt_bool_t rtgui_image_hdc_check(struct rtgui_filerw* file)
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{
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int start;
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rt_bool_t is_HDC;
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rt_uint8_t magic[4];
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if ( !file ) return 0;
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start = rtgui_filerw_tell(file);
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/* move to the begining of file */
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rtgui_filerw_seek(file, 0, SEEK_SET);
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is_HDC = RT_FALSE;
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if ( rtgui_filerw_read(file, magic, 1, sizeof(magic)) == sizeof(magic) )
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{
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if ( magic[0] == 'H' &&
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magic[1] == 'D' &&
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magic[2] == 'C' &&
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magic[3] == '\0' )
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{
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is_HDC = RT_TRUE;
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}
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}
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rtgui_filerw_seek(file, start, SEEK_SET);
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return(is_HDC);
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}
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static rt_bool_t rtgui_image_hdc_load(struct rtgui_image* image, struct rtgui_filerw* file, rt_bool_t load)
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{
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rt_uint32_t header[5];
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struct rtgui_image_hdc* hdc;
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hdc = (struct rtgui_image_hdc*) rtgui_malloc(sizeof(struct rtgui_image_hdc));
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if (hdc == RT_NULL) return RT_FALSE;
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rtgui_filerw_read(file, (char*)&header, 1, sizeof(header));
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/* set image information */
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image->w = header[1]; image->h = header[2];
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image->engine = &rtgui_image_hdc_engine;
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image->data = png;
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if (bit_depth == 16)
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png_set_strip_16(png->png_ptr);
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if (color_type == PNG_COLOR_TYPE_PALETTE)
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png_set_expand(png->png_ptr);
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if (bit_depth < 8)
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png_set_expand(png->png_ptr);
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if (png_get_valid(png->png_ptr, png->info_ptr, PNG_INFO_tRNS))
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png_set_expand(png->png_ptr);
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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->png_ptr);
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/* Ignore background color */
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/* set gamma conversion */
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if (png_get_gAMA(png->png_ptr, png->info_ptr, &gamma))
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png_set_gamma(png->png_ptr, (double)2.2, gamma);
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png_read_update_info(png->png_ptr, png->info_ptr);
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if (load == RT_TRUE)
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{
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/* load all pixels */
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png->pixels = rtgui_malloc(image->w * image->h * sizeof(rtgui_color_t));
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if (png->pixels == RT_NULL)
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{
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png_read_end(png->png_ptr, RT_NULL);
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/* destroy png struct */
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png_destroy_info_struct(png->png_ptr, &png->info_ptr);
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png_destroy_read_struct(&png->png_ptr, RT_NULL, RT_NULL);
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/* release data */
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rtgui_free(png);
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return RT_FALSE;
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}
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rtgui_image_hdc_process(png->png_ptr, png->info_ptr, png);
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}
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else
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{
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png->pixels = RT_NULL;
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}
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return RT_TRUE;
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}
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static void rtgui_image_hdc_unload(struct rtgui_image* image)
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{
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struct rtgui_image_hdc* png;
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if (image != RT_NULL)
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{
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png = (struct rtgui_image_hdc*) image->data;
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png_read_end(png->png_ptr, RT_NULL);
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/* destroy png struct */
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png_destroy_info_struct(png->png_ptr, &png->info_ptr);
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png_destroy_read_struct(&png->png_ptr, RT_NULL, RT_NULL);
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if (png->pixels != RT_NULL) rtgui_free(png->pixels);
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/* release data */
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rtgui_free(png);
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}
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}
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static void rtgui_image_hdc_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect)
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{
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rt_uint16_t x, y, w, h;
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rtgui_color_t* ptr;
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rtgui_color_t foreground;
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struct rtgui_image_hdc* png;
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RT_ASSERT(image != RT_NULL && dc != RT_NULL && rect != RT_NULL);
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RT_ASSERT(image->data != RT_NULL);
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png = (struct rtgui_image_hdc*) image->data;
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if (image->w < rtgui_rect_width(*rect)) w = image->w;
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else w = rtgui_rect_width(*rect);
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if (image->h < rtgui_rect_height(*rect)) h = image->h;
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else h = rtgui_rect_height(*rect);
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/* save foreground color */
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foreground = rtgui_dc_get_color(dc);
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if (png->pixels != RT_NULL)
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{
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ptr = (rtgui_color_t*)png->pixels;
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/* draw each point within dc */
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for (y = 0; y < h; y ++)
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{
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for (x = 0; x < w; x++)
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{
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/* not alpha */
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if ((*ptr >> 24) != 255)
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{
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rtgui_dc_set_color(dc, *ptr);
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rtgui_dc_draw_point(dc, x + rect->x1, y + rect->y1);
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}
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/* move to next color buffer */
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ptr ++;
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}
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}
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}
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else
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{
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png_bytep row;
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png_bytep data;
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row = (png_bytep) rtgui_malloc (png_get_rowbytes(png->png_ptr, png->info_ptr));
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if (row == RT_NULL) return ;
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switch (png->info_ptr->color_type)
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{
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case PNG_COLOR_TYPE_RGBA:
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for (y = 0; y < h; y++)
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{
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png_read_row(png->png_ptr, row, png_bytep_NULL);
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for (x = 0; x < w; x++)
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{
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data = &(row[x * 4]);
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if (data[3] != 0)
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{
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rtgui_dc_set_color(dc, RTGUI_ARGB((255 - data[3]), data[0], data[1], data[2]));
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rtgui_dc_draw_point(dc, x + rect->x1, y + rect->y1);
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}
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}
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}
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break;
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case PNG_COLOR_TYPE_PALETTE:
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for (y = 0; y < h; y++)
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{
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png_read_row(png->png_ptr, row, png_bytep_NULL);
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for (x = 0; x < w; x++)
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{
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data = &(row[x]);
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rtgui_dc_set_color(dc, RTGUI_ARGB(0, png->info_ptr->palette[data[0]].red,
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png->info_ptr->palette[data[0]].green,
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png->info_ptr->palette[data[0]].blue));
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rtgui_dc_draw_point(dc, x + rect->x1, y + rect->y1);
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}
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}
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default:
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break;
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};
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rtgui_free(row);
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}
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/* restore foreground */
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rtgui_dc_set_color(dc, foreground);
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}
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void rtgui_image_hdc_init()
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{
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/* register png on image system */
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rtgui_image_register_engine(&rtgui_image_hdc_engine);
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}
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@ -16,7 +16,6 @@ struct rtgui_image_png
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png_infop info_ptr;
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rt_uint8_t *pixels;
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rt_uint8_t *line_pixels;
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};
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static rt_bool_t rtgui_image_png_check(struct rtgui_filerw* file);
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@ -182,13 +181,23 @@ static rt_bool_t rtgui_image_png_load(struct rtgui_image* image, struct rtgui_fi
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{
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/* load all pixels */
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png->pixels = rtgui_malloc(image->w * image->h * sizeof(rtgui_color_t));
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png->line_pixels = RT_NULL;
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if (png->pixels == RT_NULL)
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{
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png_read_end(png->png_ptr, RT_NULL);
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/* destroy png struct */
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png_destroy_info_struct(png->png_ptr, &png->info_ptr);
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png_destroy_read_struct(&png->png_ptr, RT_NULL, RT_NULL);
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/* release data */
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rtgui_free(png);
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return RT_FALSE;
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}
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rtgui_image_png_process(png->png_ptr, png->info_ptr, png);
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}
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else
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{
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png->line_pixels = rtgui_malloc(image->w * sizeof(rtgui_color_t));
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png->pixels = RT_NULL;
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}
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@ -203,14 +212,13 @@ static void rtgui_image_png_unload(struct rtgui_image* image)
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{
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png = (struct rtgui_image_png*) image->data;
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png_read_end(png->png_ptr, NULL);
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png_read_end(png->png_ptr, RT_NULL);
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/* destroy png struct */
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png_destroy_info_struct(png->png_ptr, &png->info_ptr);
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png_destroy_read_struct(&png->png_ptr, NULL, NULL);
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png_destroy_read_struct(&png->png_ptr, RT_NULL, RT_NULL);
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if (png->pixels != RT_NULL) rtgui_free(png->pixels);
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if (png->line_pixels != RT_NULL) rtgui_free(png->line_pixels);
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/* release data */
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rtgui_free(png);
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@ -219,7 +227,7 @@ static void rtgui_image_png_unload(struct rtgui_image* image)
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static void rtgui_image_png_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect)
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{
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rt_uint16_t x, y;
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rt_uint16_t x, y, w, h;
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rtgui_color_t* ptr;
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rtgui_color_t foreground;
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struct rtgui_image_png* png;
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@ -228,15 +236,22 @@ static void rtgui_image_png_blit(struct rtgui_image* image, struct rtgui_dc* dc,
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RT_ASSERT(image->data != RT_NULL);
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png = (struct rtgui_image_png*) image->data;
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ptr = png->pixels;
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if (image->w < rtgui_rect_width(*rect)) w = image->w;
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else w = rtgui_rect_width(*rect);
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if (image->h < rtgui_rect_height(*rect)) h = image->h;
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else h = rtgui_rect_height(*rect);
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/* save foreground color */
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foreground = rtgui_dc_get_color(dc);
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/* draw each point within dc */
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for (y = 0; y < image->h; y ++)
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if (png->pixels != RT_NULL)
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{
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for (x = 0; x < image->w; x++)
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ptr = (rtgui_color_t*)png->pixels;
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/* draw each point within dc */
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for (y = 0; y < h; y ++)
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{
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for (x = 0; x < w; x++)
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{
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/* not alpha */
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if ((*ptr >> 24) != 255)
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@ -249,6 +264,55 @@ static void rtgui_image_png_blit(struct rtgui_image* image, struct rtgui_dc* dc,
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ptr ++;
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}
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}
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}
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else
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{
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png_bytep row;
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png_bytep data;
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row = (png_bytep) rtgui_malloc (png_get_rowbytes(png->png_ptr, png->info_ptr));
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if (row == RT_NULL) return ;
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switch (png->info_ptr->color_type)
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{
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case PNG_COLOR_TYPE_RGBA:
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for (y = 0; y < h; y++)
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{
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png_read_row(png->png_ptr, row, png_bytep_NULL);
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for (x = 0; x < w; x++)
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{
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data = &(row[x * 4]);
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if (data[3] != 0)
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{
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rtgui_dc_set_color(dc, RTGUI_ARGB((255 - data[3]), data[0], data[1], data[2]));
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rtgui_dc_draw_point(dc, x + rect->x1, y + rect->y1);
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}
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}
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}
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break;
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case PNG_COLOR_TYPE_PALETTE:
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for (y = 0; y < h; y++)
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{
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png_read_row(png->png_ptr, row, png_bytep_NULL);
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for (x = 0; x < w; x++)
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{
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data = &(row[x]);
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rtgui_dc_set_color(dc, RTGUI_ARGB(0, png->info_ptr->palette[data[0]].red,
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png->info_ptr->palette[data[0]].green,
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png->info_ptr->palette[data[0]].blue));
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rtgui_dc_draw_point(dc, x + rect->x1, y + rect->y1);
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}
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}
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default:
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break;
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};
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rtgui_free(row);
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}
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/* restore foreground */
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rtgui_dc_set_color(dc, foreground);
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@ -256,6 +320,6 @@ static void rtgui_image_png_blit(struct rtgui_image* image, struct rtgui_dc* dc,
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void rtgui_image_png_init()
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{
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/* register jpeg on image system */
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/* register png on image system */
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rtgui_image_register_engine(&rtgui_image_png_engine);
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}
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@ -22,6 +22,7 @@
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#ifdef __RT_THREAD__
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#define PNG_NO_WRITE_SUPPORTED
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#define PNG_NO_STDIO
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#define PNG_NO_SETJMP_SUPPORTED
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#define PNG_MAX_MALLOC_64K
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#define malloc rtgui_malloc
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#define free rtgui_free
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