From 95e6043d5e256df72c20db39c3be59a3ba977b19 Mon Sep 17 00:00:00 2001
From: Michael Sevakis <jethead71@rockbox.org>
Date: Fri, 16 Dec 2011 23:40:39 +0000
Subject: Convert remaining memframe LCDs that can be convert to common code.

Massage the way it interfaces a bit to make things more flexible.
The chroma_buf scheme on Sansa Connect and Creative ZVx calling the
lcd_write_yuv420_lines implementation in lcd-as-memframe.S with five params
with a chroma buffer that the function can't use wouldn't work anyway so just
have them use the stock implementation (really, how was that working?).


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31335 a1c6a512-1295-4272-9138-f99709370657
---
 .../tms320dm320/sansa-connect/lcd-sansaconnect.c   | 111 +--------------------
 1 file changed, 4 insertions(+), 107 deletions(-)

(limited to 'firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c')

diff --git a/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c
index 308b4297c2..ad417663fe 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c
@@ -30,18 +30,7 @@
 #include "lcd-target.h"
 #include "avr-sansaconnect.h"
 
-/* Copies a rectangle from one framebuffer to another. Can be used in
-   single transfer mode with width = num pixels, and height = 1 which
-   allows a full-width rectangle to be copied more efficiently. */
-extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
-                                 int width, int height);
-
-static bool lcd_on = true;
-
-bool lcd_active(void)
-{
-    return lcd_on;
-}
+extern bool lcd_on; /* lcd-memframe.c */
 
 #if defined(HAVE_LCD_SLEEP)
 void lcd_sleep(void)
@@ -49,6 +38,7 @@ void lcd_sleep(void)
     if (lcd_on)
     {
         lcd_on = false;
+
         avr_hid_lcm_sleep();
         sleep(HZ/20);
 
@@ -67,6 +57,7 @@ void lcd_awake(void)
     if (!lcd_on)
     {
         lcd_on = true;
+
         /* enable video encoder clock */
         bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC); 
 
@@ -159,56 +150,7 @@ void lcd_init_device(void)
     /* Enable Video Encoder - RGB666, custom timing */
     IO_VID_ENC_VMOD = 0x2011;
     avr_hid_lcm_wake();
-}
-
-/* Update a fraction of the display. */
-void lcd_update_rect(int x, int y, int width, int height)
-        __attribute__ ((section(".icode")));
-void lcd_update_rect(int x, int y, int width, int height)
-{
-    register fb_data *dst, *src;
-
-    if (!lcd_on)
-        return;
-
-    if ((width | height) < 0)
-        return; /* Nothing left to do */
-
-    if (x + width > LCD_WIDTH)
-        width = LCD_WIDTH - x; /* Clip right */
-    if (x < 0)
-        width += x, x = 0; /* Clip left */
-
-    if (y + height > LCD_HEIGHT)
-        height = LCD_HEIGHT - y; /* Clip bottom */
-    if (y < 0)
-        height += y, y = 0; /* Clip top */
-
-    dst = FRAME + LCD_WIDTH*y + x;
-    src = &lcd_framebuffer[y][x];
-
-    /* Copy part of the Rockbox framebuffer to the second framebuffer */
-    if (width < LCD_WIDTH)
-    {
-        /* Not full width - do line-by-line */
-        lcd_copy_buffer_rect(dst, src, width, height);
-    }
-    else
-    {
-        /* Full width - copy as one line */
-        lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
-    }
-}
-
-/* Update the display.
-   This must be called after all other LCD functions that change the display. */
-void lcd_update(void) __attribute__ ((section(".icode")));
-void lcd_update(void)
-{
-    if (!lcd_on)
-        return;
-
-    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+    lcd_on = true;
 }
 
 void lcd_set_contrast(int val) {
@@ -225,48 +167,3 @@ void lcd_set_flip(bool yesno) {
   (void) yesno;
   // TODO:
 }
-
-/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
-extern void lcd_write_yuv420_lines(fb_data *dst,
-                                   unsigned char chroma_buf[LCD_HEIGHT/2*3],
-                                   unsigned char const * const src[3],
-                                   int width, int stride);
-
-/* Performance function to blit a YUV bitmap directly to the LCD */
-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)
-{
-    /* Caches for chroma data so it only need be recalculated every other
-       line */
-    unsigned char chroma_buf[LCD_HEIGHT/2*3]; /* 480 bytes */
-    unsigned char const * yuv_src[3];
-    off_t z;
-
-    if (!lcd_on)
-        return;
-
-    /* Sorry, but width and height must be >= 2 or else */
-    width &= ~1;
-    height >>= 1;
-
-    fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + (LCD_WIDTH - y) - 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]);
-
-    do
-    {
-        lcd_write_yuv420_lines(dst, chroma_buf, 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;
-        dst -= 2;
-    }
-    while (--height > 0);
-}
-
-- 
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