/**************************************************************************/
/*  image_frames_loader_gif.cpp                                           */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "image_frames_loader_gif.h"

#include "modules/gif/gif_common.h"

static Ref<ImageFrames> _animated_gif_mem_loader_func(const uint8_t *p_gif_data, int p_size, int p_max_frames) {
	Ref<ImageFrames> texture;
	texture.instantiate();
	Error err = GIFCommon::gif_load_image_frames_from_buffer(texture.ptr(), p_gif_data, p_size, p_max_frames);
	ERR_FAIL_COND_V(err != OK, Ref<ImageFrames>());
	return texture;
}

Error ImageFramesLoaderGIF::load_image_frames(Ref<ImageFrames> p_image_frames, Ref<FileAccess> f, BitField<ImageFramesFormatLoader::LoaderFlags> p_flags, float p_scale, int p_max_frames) {
	Vector<uint8_t> src_image;
	uint64_t src_image_len = f->get_length();
	ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
	src_image.resize(src_image_len);

	uint8_t *w = src_image.ptrw();

	f->get_buffer(&w[0], src_image_len);

	Error err = GIFCommon::gif_load_image_frames_from_buffer(p_image_frames.ptr(), w, src_image_len, p_max_frames);

	return err;
}

void ImageFramesLoaderGIF::get_recognized_extensions(List<String> *p_extensions) const {
	p_extensions->push_back("gif");
}

ImageFramesLoaderGIF::ImageFramesLoaderGIF() {
	ImageFrames::_gif_mem_loader_func = _animated_gif_mem_loader_func;
}