From 654dcb34d61bc8313ff0d3a62e73bdf945c231ad Mon Sep 17 00:00:00 2001 From: jacqueline Date: Wed, 20 Mar 2024 18:23:33 +1100 Subject: Support pinning decoded images to RAM --- lib/luavgl/src/imgdata.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 lib/luavgl/src/imgdata.c (limited to 'lib/luavgl/src/imgdata.c') diff --git a/lib/luavgl/src/imgdata.c b/lib/luavgl/src/imgdata.c new file mode 100644 index 00000000..9f7a2a01 --- /dev/null +++ b/lib/luavgl/src/imgdata.c @@ -0,0 +1,38 @@ +#include "draw/lv_img_buf.h" +#include "draw/lv_img_decoder.h" +#include "lauxlib.h" +#include "lua.h" +#include "luavgl.h" +#include "misc/lv_color.h" +#include "misc/lv_mem.h" +#include "misc/lv_types.h" +#include "private.h" +#include +#include + +static int luavgl_imgdata_create(lua_State *L) +{ + if (!lua_isstring(L, 1)) { + return luaL_argerror(L, 1, "expect string"); + } + + lv_img_decoder_dsc_t descriptor; + lv_res_t res = + lv_img_decoder_open(&descriptor, lua_tostring(L, 1), lv_color_black(), 0); + if (res != LV_RES_OK) { + return luaL_error(L, "failed to decode image."); + } + + lv_img_dsc_t *data = lv_mem_alloc(sizeof(lv_img_dsc_t)); + data->header = descriptor.header; + data->data_size = data->header.w * data->header.h * sizeof(uint32_t); // ??? + + uint8_t *data_copy = lv_mem_alloc(data->data_size); + memcpy(data_copy, descriptor.img_data, data->data_size); + data->data = data_copy; + + lv_img_decoder_close(&descriptor); + + lua_pushlightuserdata(L, data); + return 1; +} -- cgit v1.2.3