From fe6aa21e9eb88f49005863efd2003d0982920048 Mon Sep 17 00:00:00 2001
From: Aidan MacDonald <amachronic@protonmail.com>
Date: Mon, 3 Oct 2022 10:17:41 +0100
Subject: Remove YUV blitting functions and LCD modes

None of this is needed now that mpegplayer is gone.

Change-Id: I360366db8513e4d988021e8d7b7d8eb09930efb8
---
 .../target/arm/as3525/sansa-e200v2/lcd-e200v2.c    | 98 ----------------------
 1 file changed, 98 deletions(-)

(limited to 'firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c')

diff --git a/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c b/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
index f69ad48793..141340c003 100644
--- a/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
+++ b/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
@@ -336,104 +336,6 @@ bool lcd_active(void)
 
 /*** update functions ***/
 
-static unsigned lcd_yuv_options = 0;
-
-void lcd_yuv_set_options(unsigned options)
-{
-    lcd_yuv_options = options;
-}
-
-
-#ifndef BOOTLOADER
-static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
-{
-    if (!display_flipped)
-    {
-        lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
-            ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
-        lcd_write_reg(R_VERT_RAM_ADDR_POS,  (ymax << 8) | ymin);
-        lcd_write_reg(R_RAM_ADDR_SET,
-            (ymin << 8) | (LCD_WIDTH-1 - xmin));
-        }
-        else
-    {
-        lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (xmax << 8) | xmin);
-        lcd_write_reg(R_VERT_RAM_ADDR_POS,  (ymax << 8) | ymin);
-        lcd_write_reg(R_RAM_ADDR_SET,       (ymax << 8) | xmin);
-    }
-}
-
-/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
-extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
-                                   int width,
-                                   int stride);
-extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
-                                   int width,
-                                   int stride,
-                                   int x_screen, /* To align dither pattern */
-                                   int y_screen);
-
-/* Performance function to blit a YUV bitmap directly to the LCD
- * src_x, src_y, width and height should be even
- * x, y, width and height have to be within LCD bounds
- */
-void lcd_blit_yuv(unsigned char * const src[3],
-                  int src_x, int src_y, int stride,
-                  int x, int y, int width, int height)
-{
-    unsigned char const * yuv_src[3];
-    off_t z;
-
-    /* Sorry, but width and height must be >= 2 or else */
-    width &= ~1;
-    height >>= 1;
-
-    z = stride*src_y;
-    yuv_src[0] = src[0] + z + src_x;
-    yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
-    yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
-
-    lcd_write_reg(R_ENTRY_MODE,
-        display_flipped ? R_ENTRY_MODE_VIDEO_FLIPPED : R_ENTRY_MODE_VIDEO_NORMAL
-    );
-
-    if (lcd_yuv_options & LCD_YUV_DITHER)
-    {
-        do
-        {
-            lcd_window_blit(y, x, y+1, x+width-1);
-
-            lcd_write_cmd(R_WRITE_DATA_2_GRAM);
-
-            lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
-            yuv_src[0] += stride << 1; /* Skip down two luma lines */
-            yuv_src[1] += stride >> 1; /* Skip down one chroma line */
-            yuv_src[2] += stride >> 1;
-            y += 2;
-        }
-        while (--height > 0);
-    }
-    else
-    {
-        do
-        {
-            lcd_window_blit(y, x, y+1, x+width-1);
-
-            lcd_write_cmd(R_WRITE_DATA_2_GRAM);
-
-            lcd_write_yuv420_lines(yuv_src, width, stride);
-            yuv_src[0] += stride << 1; /* Skip down two luma lines */
-            yuv_src[1] += stride >> 1; /* Skip down one chroma line */
-            yuv_src[2] += stride >> 1;
-            y += 2;
-        }
-        while (--height > 0);
-    }
-}
-
-#endif
-
-
 /* Update the display.
    This must be called after all other LCD functions that change the display. */
 void lcd_update(void)
-- 
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