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Add Image.save_png_to_buffer method

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Backported from da0457fa29.

This commit additionally exposes the method to scripting (4.0).
This commit is contained in:
Andrii Doroshenko (Xrayez) 2020-05-20 15:38:20 +03:00
parent b6c551e864
commit a3cad44f44
4 changed files with 24 additions and 0 deletions
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11
core/image.cpp
View file

@ -85,6 +85,8 @@ const char *Image::format_names[Image::FORMAT_MAX] = {
SavePNGFunc Image::save_png_func = NULL;
SaveEXRFunc Image::save_exr_func = NULL;
SavePNGBufferFunc Image::save_png_buffer_func = NULL;
void Image::_put_pixelb(int p_x, int p_y, uint32_t p_pixelsize, uint8_t *p_data, const uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixelsize;
@ -1898,6 +1900,14 @@ Error Image::save_png(const String &p_path) const {
return save_png_func(p_path, Ref<Image>((Image *)this));
}
PoolVector<uint8_t> Image::save_png_to_buffer() const {
if (save_png_buffer_func == NULL) {
return PoolVector<uint8_t>();
}
return save_png_buffer_func(Ref<Image>((Image *)this));
}
Error Image::save_exr(const String &p_path, bool p_grayscale) const {
if (save_exr_func == NULL)
@ -2728,6 +2738,7 @@ void Image::_bind_methods() {
ClassDB::bind_method(D_METHOD("load", "path"), &Image::load);
ClassDB::bind_method(D_METHOD("save_png", "path"), &Image::save_png);
ClassDB::bind_method(D_METHOD("save_png_to_buffer"), &Image::save_png_to_buffer);
ClassDB::bind_method(D_METHOD("save_exr", "path", "grayscale"), &Image::save_exr, DEFVAL(false));
ClassDB::bind_method(D_METHOD("detect_alpha"), &Image::detect_alpha);

3
core/image.h
View file

@ -47,6 +47,7 @@
class Image;
typedef Error (*SavePNGFunc)(const String &p_path, const Ref<Image> &p_img);
typedef PoolVector<uint8_t> (*SavePNGBufferFunc)(const Ref<Image> &p_img);
typedef Ref<Image> (*ImageMemLoadFunc)(const uint8_t *p_png, int p_size);
typedef Error (*SaveEXRFunc)(const String &p_path, const Ref<Image> &p_img, bool p_grayscale);
@ -57,6 +58,7 @@ class Image : public Resource {
public:
static SavePNGFunc save_png_func;
static SaveEXRFunc save_exr_func;
static SavePNGBufferFunc save_png_buffer_func;
enum {
MAX_WIDTH = 16384, // force a limit somehow
@ -259,6 +261,7 @@ public:
Error load(const String &p_path);
Error save_png(const String &p_path) const;
PoolVector<uint8_t> save_png_to_buffer() const;
Error save_exr(const String &p_path, bool p_grayscale) const;
/**

9
drivers/png/resource_saver_png.cpp
View file

@ -71,6 +71,14 @@ Error ResourceSaverPNG::save_image(const String &p_path, const Ref<Image> &p_img
return OK;
}
PoolVector<uint8_t> ResourceSaverPNG::save_image_to_buffer(const Ref<Image> &p_img) {
PoolVector<uint8_t> buffer;
Error err = PNGDriverCommon::image_to_png(p_img, buffer);
ERR_FAIL_COND_V_MSG(err, PoolVector<uint8_t>(), "Can't convert image to PNG.");
return buffer;
}
bool ResourceSaverPNG::recognize(const RES &p_resource) const {
return (p_resource.is_valid() && p_resource->is_class("ImageTexture"));
@ -86,4 +94,5 @@ void ResourceSaverPNG::get_recognized_extensions(const RES &p_resource, List<Str
ResourceSaverPNG::ResourceSaverPNG() {
Image::save_png_func = &save_image;
Image::save_png_buffer_func = &save_image_to_buffer;
};

1
drivers/png/resource_saver_png.h
View file

@ -37,6 +37,7 @@
class ResourceSaverPNG : public ResourceFormatSaver {
public:
static Error save_image(const String &p_path, const Ref<Image> &p_img);
static PoolVector<uint8_t> save_image_to_buffer(const Ref<Image> &p_img);
virtual Error save(const String &p_path, const RES &p_resource, uint32_t p_flags = 0);
virtual bool recognize(const RES &p_resource) const;