From c5efe5d625529af5df908808791599f8dceaf50c Mon Sep 17 00:00:00 2001
From: geequlim <geequlim@gmail.com>
Date: Sun, 15 Jul 2018 01:42:37 +0800
Subject: Add webp buffer loader for Image Cleanup the code memory load related
 code for Image Fix jpeg buff load function always returns OK event failed

---
 modules/webp/image_loader_webp.cpp | 67 +++++++++++++++++++++-----------------
 1 file changed, 38 insertions(+), 29 deletions(-)

(limited to 'modules/webp')

diff --git a/modules/webp/image_loader_webp.cpp b/modules/webp/image_loader_webp.cpp
index cdf2d75e96..42b2c77777 100644
--- a/modules/webp/image_loader_webp.cpp
+++ b/modules/webp/image_loader_webp.cpp
@@ -116,64 +116,73 @@ static Ref<Image> _webp_lossy_unpack(const PoolVector<uint8_t> &p_buffer) {
 	return img;
 }
 
-Error ImageLoaderWEBP::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
+Error webp_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {
 
-	uint32_t size = f->get_len();
-	PoolVector<uint8_t> src_image;
-	src_image.resize(size);
+	ERR_FAIL_NULL_V(p_image, ERR_INVALID_PARAMETER);
 
 	WebPBitstreamFeatures features;
-
-	PoolVector<uint8_t>::Write src_w = src_image.write();
-	f->get_buffer(src_w.ptr(), size);
-	ERR_FAIL_COND_V(f->eof_reached(), ERR_FILE_EOF);
-
-	if (WebPGetFeatures(src_w.ptr(), size, &features) != VP8_STATUS_OK) {
-		f->close();
-		//ERR_EXPLAIN("Error decoding WEBP image: "+p_file);
+	if (WebPGetFeatures(p_buffer, p_buffer_len, &features) != VP8_STATUS_OK) {
+		// ERR_EXPLAIN("Error decoding WEBP image");
 		ERR_FAIL_V(ERR_FILE_CORRUPT);
 	}
 
-	/*
-	print_line("width: " + itos(features.width));
-	print_line("height: " + itos(features.height));
-	print_line("alpha: " + itos(features.has_alpha));
-	*/
-
-	src_w = PoolVector<uint8_t>::Write();
-
 	PoolVector<uint8_t> dst_image;
 	int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
 	dst_image.resize(datasize);
-
-	PoolVector<uint8_t>::Read src_r = src_image.read();
 	PoolVector<uint8_t>::Write dst_w = dst_image.write();
 
 	bool errdec = false;
 	if (features.has_alpha) {
-		errdec = WebPDecodeRGBAInto(src_r.ptr(), size, dst_w.ptr(), datasize, 4 * features.width) == NULL;
+		errdec = WebPDecodeRGBAInto(p_buffer, p_buffer_len, dst_w.ptr(), datasize, 4 * features.width) == NULL;
 	} else {
-		errdec = WebPDecodeRGBInto(src_r.ptr(), size, dst_w.ptr(), datasize, 3 * features.width) == NULL;
+		errdec = WebPDecodeRGBInto(p_buffer, p_buffer_len, dst_w.ptr(), datasize, 3 * features.width) == NULL;
 	}
+	dst_w = PoolVector<uint8_t>::Write();
 
-	//ERR_EXPLAIN("Error decoding webp! - "+p_file);
+	//ERR_EXPLAIN("Error decoding webp!");
 	ERR_FAIL_COND_V(errdec, ERR_FILE_CORRUPT);
 
-	src_r = PoolVector<uint8_t>::Read();
-	dst_w = PoolVector<uint8_t>::Write();
-
 	p_image->create(features.width, features.height, 0, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image);
 
 	return OK;
 }
 
+static Ref<Image> _webp_mem_loader_func(const uint8_t *p_png, int p_size) {
+
+	Ref<Image> img;
+	img.instance();
+	Error err = webp_load_image_from_buffer(img.ptr(), p_png, p_size);
+	ERR_FAIL_COND_V(err, Ref<Image>());
+	return img;
+}
+
+Error ImageLoaderWEBP::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
+
+	PoolVector<uint8_t> src_image;
+	int src_image_len = f->get_len();
+	ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
+	src_image.resize(src_image_len);
+
+	PoolVector<uint8_t>::Write w = src_image.write();
+
+	f->get_buffer(&w[0], src_image_len);
+
+	f->close();
+
+	Error err = webp_load_image_from_buffer(p_image.ptr(), w.ptr(), src_image_len);
+
+	w = PoolVector<uint8_t>::Write();
+
+	return err;
+}
+
 void ImageLoaderWEBP::get_recognized_extensions(List<String> *p_extensions) const {
 
 	p_extensions->push_back("webp");
 }
 
 ImageLoaderWEBP::ImageLoaderWEBP() {
-
+	Image::_webp_mem_loader_func = _webp_mem_loader_func;
 	Image::lossy_packer = _webp_lossy_pack;
 	Image::lossy_unpacker = _webp_lossy_unpack;
 }
-- 
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