PNG decoder + reduced number of directory entries + external libs header cleanup

.gitmodules

@@ -2,9 +2,15 @@
 	path = libdragon
 	url = https://github.com/DragonMinded/libdragon
 	branch = unstable
+[submodule "src/libs/libspng"]
+	path = src/libs/libspng
+	url = https://github.com/randy408/libspng.git
 [submodule "src/libs/mini.c"]
 	path = src/libs/mini.c
 	url = https://github.com/univrsal/mini.c.git
 [submodule "src/libs/minimp3"]
 	path = src/libs/minimp3
 	url = https://github.com/lieff/minimp3.git
+[submodule "src/libs/miniz"]
+	path = src/libs/miniz
+	url = https://github.com/richgel999/miniz.git

Makefile

@@ -9,7 +9,7 @@ OUTPUT_DIR = output
 
 include $(N64_INST)/include/n64.mk
 
-N64_CFLAGS += -iquote $(SOURCE_DIR) $(FLAGS)
+N64_CFLAGS += -iquote $(SOURCE_DIR) -I $(SOURCE_DIR)/libs $(FLAGS)
 N64_LDFLAGS += --wrap asset_load
 
 SRCS = \
@@ -20,12 +20,18 @@ SRCS = \
 	flashcart/flashcart.c \
 	flashcart/sc64/sc64_internal.c \
 	flashcart/sc64/sc64.c \
+	libs/libspng/spng/spng.c \
 	libs/mini.c/src/mini.c \
+	libs/miniz/miniz_tdef.c \
+	libs/miniz/miniz_tinfl.c \
+	libs/miniz/miniz_zip.c \
+	libs/miniz/miniz.c \
 	menu/actions.c \
 	menu/assets.c \
 	menu/menu.c \
-	menu/mp3player.c \
+	menu/mp3_player.c \
 	menu/path.c \
+	menu/png_decoder.c \
 	menu/rom_database.c \
 	menu/settings.c \
 	menu/views/browser.c \
@@ -44,7 +50,13 @@ SRCS = \
 ASSETS = \
 	FiraMono-Bold.ttf
 
-$(BUILD_DIR)/FiraMono-Bold.o: MKFONT_FLAGS+=-c 0 --size 16 -r 20-7F -r 2000-206F -r 2190-21FF
+OBJS = $(addprefix $(BUILD_DIR)/, $(addsuffix .o,$(basename $(SRCS) $(ASSETS))))
+MINIZ_OBJS = $(filter $(BUILD_DIR)/libs/miniz/%.o,$(OBJS))
+SPNG_OBJS = $(filter $(BUILD_DIR)/libs/libspng/%.o,$(OBJS))
+
+$(MINIZ_OBJS): N64_CFLAGS+=-DMINIZ_NO_TIME -fcompare-debug-second
+$(SPNG_OBJS): N64_CFLAGS+=-isystem $(SOURCE_DIR)/libs/miniz -DSPNG_USE_MINIZ -fcompare-debug-second
+$(BUILD_DIR)/FiraMono-Bold.o: MKFONT_FLAGS+=-c 0 --size 16 -r 20-7F -r 2000-206F
 
 $(BUILD_DIR)/%.o: $(ASSETS_DIR)/%.ttf
 	@echo "    [FONT] $@"
@@ -52,8 +64,6 @@ $(BUILD_DIR)/%.o: $(ASSETS_DIR)/%.ttf
 	@$(N64_OBJCOPY) -I binary -O elf32-bigmips -B mips4300 $(basename $<).font64 $@
 	@rm $(basename $<).font64
 
-OBJS = $(addprefix $(BUILD_DIR)/, $(addsuffix .o,$(basename $(SRCS) $(ASSETS))))
-
 $(BUILD_DIR)/$(PROJECT_NAME).elf: $(OBJS)
 
 $(PROJECT_NAME).z64: N64_ROM_TITLE=$(PROJECT_NAME)

src/libs/libspng

@@ -0,0 +1 @@
+Subproject commit e5c1fc470fceaca08b8c30dc40768c28b82b9e12

src/libs/miniz

@@ -0,0 +1 @@
+Subproject commit 9ae305f6e109f8f1fbd2130458f1ee6197269b3b

src/libs/miniz_export.h

@@ -0,0 +1,3 @@
+#ifndef MINIZ_EXPORT
+#define MINIZ_EXPORT
+#endif

src/menu/menu.c

@@ -8,7 +8,7 @@
 #include "flashcart/flashcart.h"
 #include "menu_state.h"
 #include "menu.h"
-#include "mp3player.h"
+#include "mp3_player.h"
 #include "settings.h"
 #include "utils/fs.h"
 #include "views/views.h"
@@ -89,7 +89,7 @@ void menu_run (boot_params_t *boot_params) {
 
     int audio_buffer_length = audio_get_buffer_length();
 
-    while (!boot_pending && (exception_reset_time() == 0)) {
+    while (!boot_pending && (exception_reset_time() < RESET_TIME_LENGTH)) {
         surface_t *display = display_try_get();
 
         if (display != NULL) {
@@ -188,7 +188,7 @@ void menu_run (boot_params_t *boot_params) {
             }
         }
 
-        if (audio_can_write()) {
+        while (audio_can_write()) {
             short *audio_buffer = audio_write_begin();
             mixer_poll(audio_buffer, audio_buffer_length);
             audio_write_end();

src/menu/menu_state.h

@@ -14,7 +14,7 @@
 #include "settings.h"
 
 
-#define BROWSER_LIST_SIZE   10000
+#define BROWSER_LIST_SIZE   2048
 
 
 /** @brief Menu mode enumeration */

src/menu/mp3_player.c

@@ -1,12 +1,12 @@
 #include <fatfs/ff.h>
 #include <libdragon.h>
 
-#include "mp3player.h"
+#include "mp3_player.h"
 #include "utils/utils.h"
 
 #define MINIMP3_IMPLEMENTATION
-#include "libs/minimp3/minimp3.h"
-#include "libs/minimp3/minimp3_ex.h"
+#include <minimp3/minimp3_ex.h>
+#include <minimp3/minimp3.h>
 
 
 #define MIXER_CHANNEL   (0)
@@ -22,7 +22,7 @@ typedef struct {
     mp3dec_t dec;
     mp3dec_frame_info_t info;
 
-    uint8_t buffer[24 * 1024];
+    uint8_t buffer[16 * 1024];
     uint8_t *buffer_ptr;
     size_t buffer_left;
 

src/menu/mp3_player.h

@@ -4,8 +4,8 @@
  * @ingroup menu 
  */
 
-#ifndef MP3PLAYER_H__
-#define MP3PLAYER_H__
+#ifndef MP3_PLAYER_H__
+#define MP3_PLAYER_H__
 
 
 #include <stdbool.h>

src/menu/png_decoder.c

@@ -0,0 +1,100 @@
+#include <libspng/spng/spng.h>
+
+#include "path.h"
+#include "png_decoder.h"
+
+
+png_err_t png_decode (char *path, surface_t *image, int max_width, int max_height) {
+    spng_ctx *ctx;
+    enum spng_errno err = SPNG_OK;
+    path_t *file_path;
+    FILE *file;
+    size_t image_size;
+    struct spng_ihdr ihdr;
+    uint8_t *row_buffer;
+    uint16_t *image_buffer;
+
+    image->buffer = NULL;
+
+    if ((ctx = spng_ctx_new(SPNG_CTX_IGNORE_ADLER32)) == NULL) {
+        return PNG_ERR_OUT_OF_MEM;
+    }
+
+    if (spng_set_crc_action(ctx, SPNG_CRC_USE, SPNG_CRC_USE) != SPNG_OK) {
+        spng_ctx_free(ctx);
+        return PNG_ERR_INT;
+    }
+
+    if (spng_set_image_limits(ctx, max_width, max_height) != SPNG_OK) {
+        spng_ctx_free(ctx);
+        return PNG_ERR_INT;
+    }
+
+    file_path = path_init("sd:/");
+    path_append(file_path, path);
+    if ((file = fopen(path_get(file_path), "r")) == NULL) {
+        spng_ctx_free(ctx);
+        path_free(file_path);
+        return PNG_ERR_NO_FILE;
+    }
+    path_free(file_path);
+
+    if (spng_set_png_file(ctx, file) != SPNG_OK) {
+        spng_ctx_free(ctx);
+        fclose(file);
+        return PNG_ERR_INT;
+    }
+
+    if (spng_decoded_image_size(ctx, SPNG_FMT_RGB8, &image_size) != SPNG_OK) {
+        spng_ctx_free(ctx);
+        fclose(file);
+        return PNG_ERR_BAD_FILE;
+    }
+
+    if (spng_decode_image(ctx, NULL, image_size, SPNG_FMT_RGB8, SPNG_DECODE_PROGRESSIVE) != SPNG_OK) {
+        spng_ctx_free(ctx);
+        fclose(file);
+        return PNG_ERR_BAD_FILE;
+    }
+
+    if (spng_get_ihdr(ctx, &ihdr) != SPNG_OK) {
+        spng_ctx_free(ctx);
+        fclose(file);
+        return PNG_ERR_BAD_FILE;
+    }
+
+    *image = surface_alloc(FMT_RGBA16, ihdr.width, ihdr.height);
+    image_buffer = image->buffer;
+    if (image_buffer == NULL) {
+        spng_ctx_free(ctx);
+        fclose(file);
+        return PNG_ERR_OUT_OF_MEM;
+    }
+
+    if ((row_buffer = malloc(ihdr.width * 3)) == NULL) {
+        spng_ctx_free(ctx);
+        fclose(file);
+        surface_free(image);
+        return PNG_ERR_OUT_OF_MEM;
+    }
+
+    while ((err = spng_decode_row(ctx, row_buffer, ihdr.width * 3)) == SPNG_OK) {
+        for (int i = 0; i < ihdr.width * 3; i += 3) {
+            uint8_t r = row_buffer[i + 0] >> 3;
+            uint8_t g = row_buffer[i + 1] >> 3;
+            uint8_t b = row_buffer[i + 2] >> 3;
+            *image_buffer++ = (r << 11) | (g << 6) | (b << 1) | 1;
+        }
+    }
+
+    spng_ctx_free(ctx);
+    free(row_buffer);
+    fclose(file);
+
+    if ((err != SPNG_OK) && (err != SPNG_EOI)) {
+        surface_free(image);
+        return PNG_ERR_BAD_FILE;
+    }
+
+    return PNG_OK;
+}

src/menu/png_decoder.h

@@ -0,0 +1,27 @@
+/**
+ * @file png.h
+ * @brief PNG decoder
+ * @ingroup menu 
+ */
+
+#ifndef PNG_DECODER_H__
+#define PNG_DECODER_H__
+
+
+#include <surface.h>
+
+
+/** @brief PNG decoder errors */
+typedef enum {
+    PNG_OK,
+    PNG_ERR_INT,
+    PNG_ERR_OUT_OF_MEM,
+    PNG_ERR_NO_FILE,
+    PNG_ERR_BAD_FILE,
+} png_err_t;
+
+
+png_err_t png_decode (char *path, surface_t *image, int max_width, int max_height);
+
+
+#endif

src/menu/settings.c

@@ -1,6 +1,6 @@
 #include <libdragon.h>
+#include <mini.c/src/mini.h>
 
-#include "libs/mini.c/src/mini.h"
 #include "settings.h"
 #include "utils/fs.h"
 

src/menu/views/music_player.c

@@ -1,6 +1,6 @@
 #include <libdragon.h>
 
-#include "../mp3player.h"
+#include "../mp3_player.h"
 #include "fragments/fragments.h"
 #include "views.h"