#include <png.h>
#include <math.h>
#include <stdint.h>
+#include <fcntl.h>
#include <string.h>
#define SHAPE_SEARCHPATH "/shapes"
current_filename[0] = '\0';
current_name[0] = 0;
pattern_image = 0;
- min_value = 255;
- max_value = 0;
last_preserve_aspect = 0;
shapes_initialized = 0;
shape_paths.set_array_delete();
{
if( !shapes_initialized ) {
FileSystem fs;
- fs.set_filter("*.png");
+ fs.set_filter("[*.png][*.jpg]");
char shape_path[BCTEXTLEN];
sprintf(shape_path, "%s%s", get_plugin_dir(), SHAPE_SEARCHPATH);
fs.update(shape_path);
}
}
-
int ShapeWipeMain::load_configuration()
{
read_data(get_prev_keyframe(get_source_position()));
}
int ShapeWipeMain::read_pattern_image(char *shape_name,
- int new_frame_width, int new_frame_height)
-{
- png_byte header[8];
- int is_png;
- int row, col;
- int pixel_width;
- unsigned char value;
- png_uint_32 width;
- png_uint_32 height;
- png_byte color_type;
- png_byte bit_depth;
- png_structp png_ptr = 0;
- png_infop info_ptr = 0;
- png_infop end_info = 0;
- png_bytep *image = 0;
- FILE *fp = 0;
- frame_width = new_frame_width;
- frame_height = new_frame_height;
- int ret = 0;
-
+ int frame_width, int frame_height)
+{
+ VFrame *pattern = 0;
+ int ret = 0, fd = -1;
+ int is_png = 0;
+ unsigned char header[10];
// Convert name to filename
- int k = shape_paths.size();
+ int k = shape_paths.size(), hsz = sizeof(header);
while( --k>=0 && strcmp(shape_titles[k], shape_name) );
if( k < 0 ) ret = 1;
if( !ret ) {
strcpy(current_filename, shape_paths[k]);
- fp = fopen(current_filename, "rb");
- if( !fp ) ret = 1;
+ fd = ::open(current_filename, O_RDONLY);
+ if( fd < 0 || read(fd,header,hsz) != hsz ) ret = 1;
}
if( !ret ) {
- fread(header, 1, 8, fp);
- is_png = !png_sig_cmp(header, 0, 8);
- if( !is_png ) ret = 1;
+ is_png = !png_sig_cmp(header, 0, hsz);
+ if( !is_png && strncmp("JFIF", (char*)header+6, 4) ) ret = 1;
}
if( !ret ) {
- png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
- if( !png_ptr ) ret = 1;
+ lseek(fd, 0, SEEK_SET);
+ pattern = is_png ?
+ VFramePng::vframe_png(fd, 1, 1) :
+ VFrameJpeg::vframe_jpeg(fd, 1, 1, BC_GREY8);
+ if( !pattern ) ret = 1;
}
- if( !ret ) {
- /* Tell libpng we already checked the first 8 bytes */
- png_set_sig_bytes(png_ptr, 8);
- info_ptr = png_create_info_struct(png_ptr);
- if( !info_ptr ) ret = 1;
- }
- if( !ret ) {
- end_info = png_create_info_struct(png_ptr);
- if( !end_info ) ret = 1;
+ if( fd >= 0 ) {
+ close(fd); fd = -1;
}
if( !ret ) {
- png_init_io(png_ptr, fp);
- png_read_info(png_ptr, info_ptr);
-
- color_type = png_get_color_type(png_ptr, info_ptr);
- bit_depth = png_get_bit_depth(png_ptr, info_ptr);
- width = png_get_image_width (png_ptr, info_ptr);
- height = png_get_image_height(png_ptr, info_ptr);
-
- /* Skip the alpha channel if present
- * stripping alpha currently doesn't work in conjunction with
- * converting to grayscale in libpng */
- pixel_width = color_type & PNG_COLOR_MASK_ALPHA ? 2 : 1;
- /* Convert 16 bit data to 8 bit */
- if( bit_depth == 16 ) png_set_strip_16(png_ptr);
- /* Expand to 1 pixel per byte if necessary */
- if( bit_depth < 8 ) png_set_packing(png_ptr);
-
- /* Convert to grayscale */
- if( color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA )
- png_set_rgb_to_gray_fixed(png_ptr, 1, -1, -1);
-
- /* Allocate memory to hold the original png image */
- image = (png_bytep*)new png_bytep[height];
- for( row=0; row<(int)height; ++row )
- image[row] = new png_byte[width*pixel_width];
-
- /* Allocate memory for the pattern image that will actually be
- * used for the wipe */
- pattern_image = new unsigned char*[frame_height];
-
- png_read_image(png_ptr, image);
- png_read_end(png_ptr, end_info);
-
+ int width = pattern->get_w(), height = pattern->get_h();
double row_factor, col_factor;
double row_offset = 0.5, col_offset = 0.5; // for rounding
row_factor = (double)(height-1)/(double)(frame_height-1);
col_factor = (double)(width-1)/(double)(frame_width-1);
}
+ int out_w = width * col_factor, out_h = height * row_factor;
+ if( out_w != width || out_h != height ) {
+ VFrame *new_pattern = new VFrame(frame_width, frame_height, BC_GREY8);
+ new_pattern->transfer_from(pattern, 0, col_offset,row_offset,
+ frame_width*col_factor, frame_height*row_factor);
+ delete pattern; pattern = new_pattern;
+ }
+ unsigned char **rows = pattern->get_rows();
+ unsigned char min = 0xff, max = 0x00;
// first, determine range min..max
for( int y=0; y<frame_height; ++y ) {
- row = (int)(row_factor*y + row_offset);
+ unsigned char *row = rows[y];
for( int x=0; x<frame_width; ++x ) {
- col = (int)(col_factor*x + col_offset)*pixel_width;
- value = image[row][col];
- if( value < min_value ) min_value = value;
- if( value > max_value ) max_value = value;
+ unsigned char value = row[x];
+ if( value < min ) min = value;
+ if( value > max ) max = value;
}
}
- int range = max_value - min_value;
+ if( min > max ) min = max;
+ int range = max - min;
if( !range ) range = 1;
+ pattern_image = new unsigned char*[frame_height];
// scale to fade normalized pattern_image
for( int y=0; y<frame_height; ++y ) {
- row = (int)(row_factor*y + row_offset);
+ unsigned char *row = rows[y];
pattern_image[y] = new unsigned char[frame_width];
for( int x=0; x<frame_width; ++x ) {
- col = (int)(col_factor*x + col_offset)*pixel_width;
- value = image[row][col];
- pattern_image[y][x] = 0xff*(value - min_value) / range;
+ unsigned char value = row[x];
+ pattern_image[y][x] = 0xff*(value-min) / range;
}
}
+ this->frame_width = frame_width;
+ this->frame_height = frame_height;
}
- if( png_ptr || info_ptr || end_info )
- png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
- if( fp )
- fclose(fp);
- if( image ) {
- for( row=0; row<(int)height; ++row )
- delete [] image[row];
- delete [] image;
- }
return ret;
}
for( int y=0; y<frame_height; ++y )
delete [] pattern_image[y];
delete [] pattern_image; pattern_image = 0;
- min_value = 255;
- max_value = 0; // updated in read_pattern_image
}
}
projects / goodguy / cinelerra.git / blobdiff