From a9b3ffd3cce011d42652d22f15a4a13dff29b0d7 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Thu, 23 Aug 2007 13:24:11 +0000
Subject: [PATCH] ROM load progress bar

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@224 be3aeb3a-fb24-0410-a615-afba39da0efa
---
 Pico/Cart.c            | 29 +++++++++++++++++++++++++++--
 Pico/Pico.h            |  1 +
 platform/gp2x/Makefile |  2 +-
 platform/gp2x/emu.c    |  4 ++++
 platform/gp2x/gp2x.c   |  9 +++++----
 platform/gp2x/menu.c   | 34 +++++++++++++++++++++++++++++++++-
 platform/gp2x/menu.h   |  2 ++
 7 files changed, 73 insertions(+), 8 deletions(-)

diff --git a/Pico/Cart.c b/Pico/Cart.c
index a8470886..1cf8dec7 100644
--- a/Pico/Cart.c
+++ b/Pico/Cart.c
@@ -15,6 +15,8 @@
 
 static char *rom_exts[] = { "bin", "gen", "smd", "iso" };
 
+void (*PicoCartLoadProgressCB)(int percent) = NULL;
+
 
 pm_file *pm_open(const char *path)
 {
@@ -244,7 +246,7 @@ static unsigned char *PicoCartAlloc(int filesize)
 
 int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
 {
-  unsigned char *rom=NULL; int size;
+  unsigned char *rom=NULL; int size, bytes_read;
   if (f==NULL) return 1;
 
   size=f->size;
@@ -258,7 +260,30 @@ int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
     return 1;
   }
 
-  pm_read(rom,size,f); // Load up the rom
+  if (PicoCartLoadProgressCB != NULL)
+  {
+    // read ROM in blocks, just for fun
+    int ret;
+    unsigned char *p = rom;
+    bytes_read=0;
+    do
+    {
+      int todo = size - bytes_read;
+      if (todo > 256*1024) todo = 256*1024;
+      ret = pm_read(p,todo,f);
+      bytes_read += ret;
+      p += ret;
+      PicoCartLoadProgressCB(bytes_read * 100 / size);
+    }
+    while (ret > 0);
+  }
+  else
+    bytes_read = pm_read(rom,size,f); // Load up the rom
+  if (bytes_read <= 0) {
+    printf("read failed\n");
+    free(rom);
+    return 1;
+  }
 
   // maybe we are loading MegaCD BIOS?
   if (!(PicoMCD&1) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) || !strncmp((char *)rom+0x128, "BOOT", 4))) {
diff --git a/Pico/Pico.h b/Pico/Pico.h
index 8e5d6423..ec5148bd 100644
--- a/Pico/Pico.h
+++ b/Pico/Pico.h
@@ -92,6 +92,7 @@ int PicoCartInsert(unsigned char *rom,unsigned int romsize);
 void Byteswap(unsigned char *data,int len);
 // anotherguest
 int PicoUnloadCart(unsigned char* romdata);
+extern void (*PicoCartLoadProgressCB)(int percent);
 
 // Draw.c
 void PicoDrawSetColorFormat(int which); // 0=BGR444, 1=RGB555, 2=8bit(HighPal pal)
diff --git a/platform/gp2x/Makefile b/platform/gp2x/Makefile
index d9c40bb3..489d62f3 100644
--- a/platform/gp2x/Makefile
+++ b/platform/gp2x/Makefile
@@ -210,7 +210,7 @@ $(error need VER)
 endif
 endif
 
-rel: PicoDrive.gpe code940/code940.bin ../readme.txt config.txt PicoDrive.man.txt PicoDrive.png
+rel: PicoDrive.gpe code940/pico940.bin ../readme.txt config.txt PicoDrive.man.txt PicoDrive.png
 	zip -9 -j ../../PicoDrive_$(VER).zip $^ mmuhack.o
 
 code940/code940.bin:
diff --git a/platform/gp2x/emu.c b/platform/gp2x/emu.c
index cb924c34..bfbc0c11 100644
--- a/platform/gp2x/emu.c
+++ b/platform/gp2x/emu.c
@@ -287,6 +287,8 @@ int emu_ReloadRom(void)
 		return 0;
 	}
 
+	menu_romload_prepare(used_rom_name);
+
 	if(rom_data) {
 		free(rom_data);
 		rom_data = 0;
@@ -297,9 +299,11 @@ int emu_ReloadRom(void)
 		sprintf(menuErrorMsg, "PicoCartLoad() failed.");
 		printf("%s\n", menuErrorMsg);
 		pm_close(rom);
+		menu_romload_end();
 		return 0;
 	}
 	pm_close(rom);
+	menu_romload_end();
 
 	// detect wrong files (Pico crashes on very small files), also see if ROM EP is good
 	if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||
diff --git a/platform/gp2x/gp2x.c b/platform/gp2x/gp2x.c
index d6a701c9..c0396d9d 100644
--- a/platform/gp2x/gp2x.c
+++ b/platform/gp2x/gp2x.c
@@ -159,10 +159,11 @@ void gp2x_video_wait_vsync(void)
 
 void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
 {
-	if (buffers & (1<<0)) memcpy((char *)gp2x_screens[0] + offset, data, len);
-	if (buffers & (1<<1)) memcpy((char *)gp2x_screens[1] + offset, data, len);
-	if (buffers & (1<<2)) memcpy((char *)gp2x_screens[2] + offset, data, len);
-	if (buffers & (1<<3)) memcpy((char *)gp2x_screens[3] + offset, data, len);
+	char *dst;
+	if (buffers & (1<<0)) { dst = (char *)gp2x_screens[0] + offset; if (dst != data) memcpy(dst, data, len); }
+	if (buffers & (1<<1)) { dst = (char *)gp2x_screens[1] + offset; if (dst != data) memcpy(dst, data, len); }
+	if (buffers & (1<<2)) { dst = (char *)gp2x_screens[2] + offset; if (dst != data) memcpy(dst, data, len); }
+	if (buffers & (1<<3)) { dst = (char *)gp2x_screens[3] + offset; if (dst != data) memcpy(dst, data, len); }
 }
 
 
diff --git a/platform/gp2x/menu.c b/platform/gp2x/menu.c
index 9b51d7c0..06a3e3df 100644
--- a/platform/gp2x/menu.c
+++ b/platform/gp2x/menu.c
@@ -420,6 +420,39 @@ static unsigned long wait_for_input_usbjoy(unsigned long interesting, int *joy)
 
 
 
+// --------- loading ROM screen ----------
+
+static void load_progress_cb(int percent)
+{
+	int ln, len = percent * 320 / 100;
+	unsigned char *dst = (unsigned char *)gp2x_screen + 320*20;
+
+	if (len > 320) len = 320;
+	for (ln = 10; ln > 0; ln--, dst += 320)
+		memset(dst, 0xf0, len);
+	gp2x_video_flip2();
+}
+
+void menu_romload_prepare(const char *rom_name)
+{
+	const char *p = rom_name + strlen(rom_name);
+	while (p > rom_name && *p != '/') p--;
+
+	gp2x_pd_clone_buffer2();
+	gp2x_smalltext8(1, 1, "Loading");
+	gp2x_smalltext8_lim(1, 10, p, 53);
+	gp2x_memcpy_buffers(3, gp2x_screen, 0, 320*240);
+	gp2x_video_flip2();
+	PicoCartLoadProgressCB = load_progress_cb;
+}
+
+void menu_romload_end(void)
+{
+	PicoCartLoadProgressCB = NULL;
+	gp2x_smalltext8(1, 30, "Starting emulation...");
+	gp2x_video_flip2();
+}
+
 // -------------- ROM selector --------------
 
 static void draw_dirlist(char *curdir, struct dirent **namelist, int n, int sel)
@@ -429,7 +462,6 @@ static void draw_dirlist(char *curdir, struct dirent **namelist, int n, int sel)
 	start = 12 - sel;
 	n--; // exclude current dir (".")
 
-	//memset(gp2x_screen, 0, 320*240);
 	gp2x_pd_clone_buffer2();
 
 	if(start - 2 >= 0)
diff --git a/platform/gp2x/menu.h b/platform/gp2x/menu.h
index 87c51b54..8c9e29b3 100644
--- a/platform/gp2x/menu.h
+++ b/platform/gp2x/menu.h
@@ -10,6 +10,8 @@ void gp2x_text_out15 (int x, int y, const char *text);
 void gp2x_text_out8_2(int x, int y, const char *texto, int color);
 void menu_loop(void);
 int  menu_loop_tray(void);
+void menu_romload_prepare(const char *rom_name);
+void menu_romload_end(void);
 
 #define CONFIGURABLE_KEYS \
 	(GP2X_UP|GP2X_DOWN|GP2X_LEFT|GP2X_RIGHT|GP2X_A|GP2X_B|GP2X_X|GP2X_Y| \
-- 
2.39.5