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path: root/modules/bmp/image_loader_bmp.cpp
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Diffstat (limited to 'modules/bmp/image_loader_bmp.cpp')
-rw-r--r--modules/bmp/image_loader_bmp.cpp228
1 files changed, 113 insertions, 115 deletions
diff --git a/modules/bmp/image_loader_bmp.cpp b/modules/bmp/image_loader_bmp.cpp
index 5a32fa1c2c..8708430257 100644
--- a/modules/bmp/image_loader_bmp.cpp
+++ b/modules/bmp/image_loader_bmp.cpp
@@ -63,139 +63,137 @@ Error ImageLoaderBMP::convert_to_image(Ref<Image> p_image,
ERR_FAIL_V(ERR_UNAVAILABLE);
}
- if (err == OK) {
- // Image data (might be indexed)
- PoolVector<uint8_t> data;
- int data_len = 0;
+ // Image data (might be indexed)
+ PoolVector<uint8_t> data;
+ int data_len = 0;
- if (bits_per_pixel <= 8) { // indexed
- data_len = width * height;
- } else { // color
- data_len = width * height * 4;
- }
- ERR_FAIL_COND_V(data_len == 0, ERR_BUG);
- err = data.resize(data_len);
-
- PoolVector<uint8_t>::Write data_w = data.write();
- uint8_t *write_buffer = data_w.ptr();
-
- const uint32_t width_bytes = width * bits_per_pixel / 8;
- const uint32_t line_width = (width_bytes + 3) & ~3;
-
- // The actual data traversal is determined by
- // the data width in case of 8/4/1 bit images
- const uint32_t w = bits_per_pixel >= 24 ? width : width_bytes;
- const uint8_t *line = p_buffer + (line_width * (height - 1));
-
- for (unsigned int i = 0; i < height; i++) {
- const uint8_t *line_ptr = line;
-
- for (unsigned int j = 0; j < w; j++) {
- switch (bits_per_pixel) {
- case 1: {
- uint8_t color_index = *line_ptr;
-
- write_buffer[index + 0] = (color_index >> 7) & 1;
- write_buffer[index + 1] = (color_index >> 6) & 1;
- write_buffer[index + 2] = (color_index >> 5) & 1;
- write_buffer[index + 3] = (color_index >> 4) & 1;
- write_buffer[index + 4] = (color_index >> 3) & 1;
- write_buffer[index + 5] = (color_index >> 2) & 1;
- write_buffer[index + 6] = (color_index >> 1) & 1;
- write_buffer[index + 7] = (color_index >> 0) & 1;
-
- index += 8;
- line_ptr += 1;
- } break;
- case 4: {
- uint8_t color_index = *line_ptr;
-
- write_buffer[index + 0] = (color_index >> 4) & 0x0f;
- write_buffer[index + 1] = color_index & 0x0f;
-
- index += 2;
- line_ptr += 1;
- } break;
- case 8: {
- uint8_t color_index = *line_ptr;
-
- write_buffer[index] = color_index;
-
- index += 1;
- line_ptr += 1;
- } break;
- case 24: {
- uint32_t color = *((uint32_t *)line_ptr);
-
- write_buffer[index + 2] = color & 0xff;
- write_buffer[index + 1] = (color >> 8) & 0xff;
- write_buffer[index + 0] = (color >> 16) & 0xff;
- write_buffer[index + 3] = 0xff;
-
- index += 4;
- line_ptr += 3;
- } break;
- case 32: {
- uint32_t color = *((uint32_t *)line_ptr);
-
- write_buffer[index + 2] = color & 0xff;
- write_buffer[index + 1] = (color >> 8) & 0xff;
- write_buffer[index + 0] = (color >> 16) & 0xff;
- write_buffer[index + 3] = color >> 24;
-
- index += 4;
- line_ptr += 4;
- } break;
- }
+ if (bits_per_pixel <= 8) { // indexed
+ data_len = width * height;
+ } else { // color
+ data_len = width * height * 4;
+ }
+ ERR_FAIL_COND_V(data_len == 0, ERR_BUG);
+ err = data.resize(data_len);
+
+ PoolVector<uint8_t>::Write data_w = data.write();
+ uint8_t *write_buffer = data_w.ptr();
+
+ const uint32_t width_bytes = width * bits_per_pixel / 8;
+ const uint32_t line_width = (width_bytes + 3) & ~3;
+
+ // The actual data traversal is determined by
+ // the data width in case of 8/4/1 bit images
+ const uint32_t w = bits_per_pixel >= 24 ? width : width_bytes;
+ const uint8_t *line = p_buffer + (line_width * (height - 1));
+
+ for (uint64_t i = 0; i < height; i++) {
+ const uint8_t *line_ptr = line;
+
+ for (unsigned int j = 0; j < w; j++) {
+ switch (bits_per_pixel) {
+ case 1: {
+ uint8_t color_index = *line_ptr;
+
+ write_buffer[index + 0] = (color_index >> 7) & 1;
+ write_buffer[index + 1] = (color_index >> 6) & 1;
+ write_buffer[index + 2] = (color_index >> 5) & 1;
+ write_buffer[index + 3] = (color_index >> 4) & 1;
+ write_buffer[index + 4] = (color_index >> 3) & 1;
+ write_buffer[index + 5] = (color_index >> 2) & 1;
+ write_buffer[index + 6] = (color_index >> 1) & 1;
+ write_buffer[index + 7] = (color_index >> 0) & 1;
+
+ index += 8;
+ line_ptr += 1;
+ } break;
+ case 4: {
+ uint8_t color_index = *line_ptr;
+
+ write_buffer[index + 0] = (color_index >> 4) & 0x0f;
+ write_buffer[index + 1] = color_index & 0x0f;
+
+ index += 2;
+ line_ptr += 1;
+ } break;
+ case 8: {
+ uint8_t color_index = *line_ptr;
+
+ write_buffer[index] = color_index;
+
+ index += 1;
+ line_ptr += 1;
+ } break;
+ case 24: {
+ uint32_t color = *((uint32_t *)line_ptr);
+
+ write_buffer[index + 2] = color & 0xff;
+ write_buffer[index + 1] = (color >> 8) & 0xff;
+ write_buffer[index + 0] = (color >> 16) & 0xff;
+ write_buffer[index + 3] = 0xff;
+
+ index += 4;
+ line_ptr += 3;
+ } break;
+ case 32: {
+ uint32_t color = *((uint32_t *)line_ptr);
+
+ write_buffer[index + 2] = color & 0xff;
+ write_buffer[index + 1] = (color >> 8) & 0xff;
+ write_buffer[index + 0] = (color >> 16) & 0xff;
+ write_buffer[index + 3] = color >> 24;
+
+ index += 4;
+ line_ptr += 4;
+ } break;
}
- line -= line_width;
}
+ line -= line_width;
+ }
- if (p_color_buffer == NULL || color_table_size == 0) { // regular pixels
+ if (p_color_buffer == NULL || color_table_size == 0) { // regular pixels
- p_image->create(width, height, 0, Image::FORMAT_RGBA8, data);
+ p_image->create(width, height, 0, Image::FORMAT_RGBA8, data);
- } else { // data is in indexed format, extend it
+ } else { // data is in indexed format, extend it
- // Palette data
- PoolVector<uint8_t> palette_data;
- palette_data.resize(color_table_size * 4);
+ // Palette data
+ PoolVector<uint8_t> palette_data;
+ palette_data.resize(color_table_size * 4);
- PoolVector<uint8_t>::Write palette_data_w = palette_data.write();
- uint8_t *pal = palette_data_w.ptr();
+ PoolVector<uint8_t>::Write palette_data_w = palette_data.write();
+ uint8_t *pal = palette_data_w.ptr();
- const uint8_t *cb = p_color_buffer;
+ const uint8_t *cb = p_color_buffer;
- for (unsigned int i = 0; i < color_table_size; ++i) {
- uint32_t color = *((uint32_t *)cb);
+ for (unsigned int i = 0; i < color_table_size; ++i) {
+ uint32_t color = *((uint32_t *)cb);
- pal[i * 4 + 0] = (color >> 16) & 0xff;
- pal[i * 4 + 1] = (color >> 8) & 0xff;
- pal[i * 4 + 2] = (color)&0xff;
- pal[i * 4 + 3] = 0xff;
+ pal[i * 4 + 0] = (color >> 16) & 0xff;
+ pal[i * 4 + 1] = (color >> 8) & 0xff;
+ pal[i * 4 + 2] = (color)&0xff;
+ pal[i * 4 + 3] = 0xff;
- cb += 4;
- }
- // Extend palette to image
- PoolVector<uint8_t> extended_data;
- extended_data.resize(data.size() * 4);
+ cb += 4;
+ }
+ // Extend palette to image
+ PoolVector<uint8_t> extended_data;
+ extended_data.resize(data.size() * 4);
- PoolVector<uint8_t>::Write ex_w = extended_data.write();
- uint8_t *dest = ex_w.ptr();
+ PoolVector<uint8_t>::Write ex_w = extended_data.write();
+ uint8_t *dest = ex_w.ptr();
- const int num_pixels = width * height;
+ const int num_pixels = width * height;
- for (int i = 0; i < num_pixels; i++) {
- dest[0] = pal[write_buffer[i] * 4 + 0];
- dest[1] = pal[write_buffer[i] * 4 + 1];
- dest[2] = pal[write_buffer[i] * 4 + 2];
- dest[3] = pal[write_buffer[i] * 4 + 3];
+ for (int i = 0; i < num_pixels; i++) {
+ dest[0] = pal[write_buffer[i] * 4 + 0];
+ dest[1] = pal[write_buffer[i] * 4 + 1];
+ dest[2] = pal[write_buffer[i] * 4 + 2];
+ dest[3] = pal[write_buffer[i] * 4 + 3];
- dest += 4;
- }
- p_image->create(width, height, 0, Image::FORMAT_RGBA8, extended_data);
+ dest += 4;
}
+ p_image->create(width, height, 0, Image::FORMAT_RGBA8, extended_data);
}
}
return err;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 22:57:08 +0000