convert lvgl from submodule to a plain old directory

2 files changed, 274 insertions, 0 deletions

diff --git a/lib/lvgl b/lib/lvgl
deleted file mode 160000
-Subproject 0732400e7b564dd0e7dc4a924619d8e19c5b23a
diff --git a/lib/lvgl/src/draw/lv_img_decoder.h b/lib/lvgl/src/draw/lv_img_decoder.h
new file mode 100644
index 00000000..9dc84dd5
--- /dev/null
+++ b/lib/lvgl/src/draw/lv_img_decoder.h
@@ -0,0 +1,274 @@
+/**
+ * @file lv_img_decoder.h
+ *
+ */
+
+#ifndef LV_IMG_DECODER_H
+#define LV_IMG_DECODER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+
+#include <stdint.h>
+#include "lv_img_buf.h"
+#include "../misc/lv_fs.h"
+#include "../misc/lv_types.h"
+#include "../misc/lv_area.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**
+ * Source of image.*/
+enum {
+    LV_IMG_SRC_VARIABLE, /** Binary/C variable*/
+    LV_IMG_SRC_FILE, /** File in filesystem*/
+    LV_IMG_SRC_SYMBOL, /** Symbol (@ref lv_symbol_def.h)*/
+    LV_IMG_SRC_UNKNOWN, /** Unknown source*/
+};
+
+typedef uint8_t lv_img_src_t;
+
+/*Decoder function definitions*/
+struct _lv_img_decoder_dsc_t;
+struct _lv_img_decoder_t;
+
+/**
+ * Get info from an image and store in the `header`
+ * @param src the image source. Can be a pointer to a C array or a file name (Use
+ * `lv_img_src_get_type` to determine the type)
+ * @param header store the info here
+ * @return LV_RES_OK: info written correctly; LV_RES_INV: failed
+ */
+typedef lv_res_t (*lv_img_decoder_info_f_t)(struct _lv_img_decoder_t * decoder, const void * src,
+                                            lv_img_header_t * header);
+
+/**
+ * Open an image for decoding. Prepare it as it is required to read it later
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor. `src`, `color` are already initialized in it.
+ */
+typedef lv_res_t (*lv_img_decoder_open_f_t)(struct _lv_img_decoder_t * decoder, struct _lv_img_decoder_dsc_t * dsc);
+
+/**
+ * Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
+ * Required only if the "open" function can't return with the whole decoded pixel array.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ * @param x start x coordinate
+ * @param y start y coordinate
+ * @param len number of pixels to decode
+ * @param buf a buffer to store the decoded pixels
+ * @return LV_RES_OK: ok; LV_RES_INV: failed
+ */
+typedef lv_res_t (*lv_img_decoder_read_line_f_t)(struct _lv_img_decoder_t * decoder, struct _lv_img_decoder_dsc_t * dsc,
+                                                 lv_coord_t x, lv_coord_t y, lv_coord_t len, uint8_t * buf);
+
+/**
+ * Close the pending decoding. Free resources etc.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ */
+typedef void (*lv_img_decoder_close_f_t)(struct _lv_img_decoder_t * decoder, struct _lv_img_decoder_dsc_t * dsc);
+
+
+typedef struct _lv_img_decoder_t {
+    lv_img_decoder_info_f_t info_cb;
+    lv_img_decoder_open_f_t open_cb;
+    lv_img_decoder_read_line_f_t read_line_cb;
+    lv_img_decoder_close_f_t close_cb;
+
+#if LV_USE_USER_DATA
+    void * user_data;
+#endif
+} lv_img_decoder_t;
+
+
+/**Describe an image decoding session. Stores data about the decoding*/
+typedef struct _lv_img_decoder_dsc_t {
+    /**The decoder which was able to open the image source*/
+    lv_img_decoder_t * decoder;
+
+    /**The image source. A file path like "S:my_img.png" or pointer to an `lv_img_dsc_t` variable*/
+    const void * src;
+
+    /**Color to draw the image. USed when the image has alpha channel only*/
+    lv_color_t color;
+
+    /**Frame of the image, using with animated images*/
+    int32_t frame_id;
+
+    /**Type of the source: file or variable. Can be set in `open` function if required*/
+    lv_img_src_t src_type;
+
+    /**Info about the opened image: color format, size, etc. MUST be set in `open` function*/
+    lv_img_header_t header;
+
+    /** Pointer to a buffer where the image's data (pixels) are stored in a decoded, plain format.
+     *  MUST be set in `open` function*/
+    const uint8_t * img_data;
+
+    /** How much time did it take to open the image. [ms]
+     *  If not set `lv_img_cache` will measure and set the time to open*/
+    uint32_t time_to_open;
+
+    /**A text to display instead of the image when the image can't be opened.
+     * Can be set in `open` function or set NULL.*/
+    const char * error_msg;
+
+    /**Store any custom data here is required*/
+    void * user_data;
+} lv_img_decoder_dsc_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Initialize the image decoder module
+ */
+void _lv_img_decoder_init(void);
+
+/**
+ * Get information about an image.
+ * Try the created image decoder one by one. Once one is able to get info that info will be used.
+ * @param src the image source. Can be
+ *  1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_drv_register()`)
+ *  2) Variable: Pointer to an `lv_img_dsc_t` variable
+ *  3) Symbol: E.g. `LV_SYMBOL_OK`
+ * @param header the image info will be stored here
+ * @return LV_RES_OK: success; LV_RES_INV: wasn't able to get info about the image
+ */
+lv_res_t lv_img_decoder_get_info(const void * src, lv_img_header_t * header);
+
+/**
+ * Open an image.
+ * Try the created image decoders one by one. Once one is able to open the image that decoder is saved in `dsc`
+ * @param dsc describes a decoding session. Simply a pointer to an `lv_img_decoder_dsc_t` variable.
+ * @param src the image source. Can be
+ *  1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_drv_register())`)
+ *  2) Variable: Pointer to an `lv_img_dsc_t` variable
+ *  3) Symbol: E.g. `LV_SYMBOL_OK`
+ * @param color The color of the image with `LV_IMG_CF_ALPHA_...`
+ * @param frame_id the index of the frame. Used only with animated images, set 0 for normal images
+ * @return LV_RES_OK: opened the image. `dsc->img_data` and `dsc->header` are set.
+ *         LV_RES_INV: none of the registered image decoders were able to open the image.
+ */
+lv_res_t lv_img_decoder_open(lv_img_decoder_dsc_t * dsc, const void * src, lv_color_t color, int32_t frame_id);
+
+/**
+ * Read a line from an opened image
+ * @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
+ * @param x start X coordinate (from left)
+ * @param y start Y coordinate (from top)
+ * @param len number of pixels to read
+ * @param buf store the data here
+ * @return LV_RES_OK: success; LV_RES_INV: an error occurred
+ */
+lv_res_t lv_img_decoder_read_line(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_coord_t len,
+                                  uint8_t * buf);
+
+/**
+ * Close a decoding session
+ * @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
+ */
+void lv_img_decoder_close(lv_img_decoder_dsc_t * dsc);
+
+/**
+ * Create a new image decoder
+ * @return pointer to the new image decoder
+ */
+lv_img_decoder_t * lv_img_decoder_create(void);
+
+/**
+ * Delete an image decoder
+ * @param decoder pointer to an image decoder
+ */
+void lv_img_decoder_delete(lv_img_decoder_t * decoder);
+
+/**
+ * Set a callback to get information about the image
+ * @param decoder pointer to an image decoder
+ * @param info_cb a function to collect info about an image (fill an `lv_img_header_t` struct)
+ */
+void lv_img_decoder_set_info_cb(lv_img_decoder_t * decoder, lv_img_decoder_info_f_t info_cb);
+
+/**
+ * Set a callback to open an image
+ * @param decoder pointer to an image decoder
+ * @param open_cb a function to open an image
+ */
+void lv_img_decoder_set_open_cb(lv_img_decoder_t * decoder, lv_img_decoder_open_f_t open_cb);
+
+/**
+ * Set a callback to a decoded line of an image
+ * @param decoder pointer to an image decoder
+ * @param read_line_cb a function to read a line of an image
+ */
+void lv_img_decoder_set_read_line_cb(lv_img_decoder_t * decoder, lv_img_decoder_read_line_f_t read_line_cb);
+
+/**
+ * Set a callback to close a decoding session. E.g. close files and free other resources.
+ * @param decoder pointer to an image decoder
+ * @param close_cb a function to close a decoding session
+ */
+void lv_img_decoder_set_close_cb(lv_img_decoder_t * decoder, lv_img_decoder_close_f_t close_cb);
+
+/**
+ * Get info about a built-in image
+ * @param decoder the decoder where this function belongs
+ * @param src the image source: pointer to an `lv_img_dsc_t` variable, a file path or a symbol
+ * @param header store the image data here
+ * @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
+ */
+lv_res_t lv_img_decoder_built_in_info(lv_img_decoder_t * decoder, const void * src, lv_img_header_t * header);
+
+/**
+ * Open a built in image
+ * @param decoder the decoder where this function belongs
+ * @param dsc pointer to decoder descriptor. `src`, `style` are already initialized in it.
+ * @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
+ */
+lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc);
+
+/**
+ * Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
+ * Required only if the "open" function can't return with the whole decoded pixel array.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ * @param x start x coordinate
+ * @param y start y coordinate
+ * @param len number of pixels to decode
+ * @param buf a buffer to store the decoded pixels
+ * @return LV_RES_OK: ok; LV_RES_INV: failed
+ */
+lv_res_t lv_img_decoder_built_in_read_line(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc, lv_coord_t x,
+                                           lv_coord_t y, lv_coord_t len, uint8_t * buf);
+
+/**
+ * Close the pending decoding. Free resources etc.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ */
+void lv_img_decoder_built_in_close(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_IMG_DECODER_H*/