From 418169aff8faf2cf90124cd95dba0af821cea73d Mon Sep 17 00:00:00 2001
From: Solomon Peachy <pizza@shaftnet.org>
Date: Thu, 13 Oct 2022 11:03:53 -0400
Subject: Revert "Remove YUV blitting functions and LCD modes"

This reverts commit fe6aa21e9eb88f49005863efd2003d0982920048.

Change-Id: I8bb1e5d6c52ed1478002d2140ef494ec5d62b8e3
---
 apps/plugins/test_fps.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)

(limited to 'apps/plugins/test_fps.c')

diff --git a/apps/plugins/test_fps.c b/apps/plugins/test_fps.c
index b2fc957dc1..ddf938ac25 100644
--- a/apps/plugins/test_fps.c
+++ b/apps/plugins/test_fps.c
@@ -123,6 +123,94 @@ static void time_main_update(void)
     log_text(str);
 }
 
+#if defined(HAVE_LCD_COLOR) && (MEMORYSIZE > 2)
+
+#if LCD_WIDTH >= LCD_HEIGHT
+#define YUV_WIDTH LCD_WIDTH
+#define YUV_HEIGHT LCD_HEIGHT
+#else /* Assume the screen is rotated on portrait LCDs */
+#define YUV_WIDTH LCD_HEIGHT
+#define YUV_HEIGHT LCD_WIDTH
+#endif
+
+static unsigned char ydata[YUV_HEIGHT][YUV_WIDTH];
+static unsigned char udata[YUV_HEIGHT/2][YUV_WIDTH/2];
+static unsigned char vdata[YUV_HEIGHT/2][YUV_WIDTH/2];
+
+static unsigned char * const yuvbuf[3] = {
+    (void*)ydata,
+    (void*)udata,
+    (void*)vdata
+};
+
+static void make_gradient_rect(int width, int height)
+{
+    unsigned char vline[YUV_WIDTH/2];
+    int x, y;
+
+    width /= 2;
+    height /= 2;
+
+    for (x = 0; x < width; x++)
+        vline[x] = (x << 8) / width;
+    for (y = 0; y < height; y++)
+    {
+        rb->memset(udata[y], (y << 8) / height, width);
+        rb->memcpy(vdata[y], vline, width);
+    }
+}
+
+static void time_main_yuv(void)
+{
+    char str[32];     /* text buffer */
+    long time_start;  /* start tickcount */
+    long time_end;    /* end tickcount */
+    int frame_count;
+    int fps;
+
+    const int part14_x = YUV_WIDTH/4;   /* x-offset for 1/4 update test */
+    const int part14_w = YUV_WIDTH/2;   /* x-size for 1/4 update test */
+    const int part14_y = YUV_HEIGHT/4;  /* y-offset for 1/4 update test */
+    const int part14_h = YUV_HEIGHT/2;  /* y-size for 1/4 update test */
+    
+    log_text("Main LCD YUV");
+
+    rb->memset(ydata, 128, sizeof(ydata)); /* medium grey */
+
+    /* Test 1: full LCD update */
+    make_gradient_rect(YUV_WIDTH, YUV_HEIGHT);
+
+    frame_count = 0;
+    rb->sleep(0); /* sync to tick */
+    time_start = *rb->current_tick;
+    while((time_end = *rb->current_tick) - time_start < DURATION)
+    {
+        rb->lcd_blit_yuv(yuvbuf, 0, 0, YUV_WIDTH,
+                         0, 0, YUV_WIDTH, YUV_HEIGHT);
+        frame_count++;
+    }
+    fps = calc_tenth_fps(frame_count, time_end - time_start);
+    rb->snprintf(str, sizeof(str), "1/1: %d.%d fps", fps / 10, fps % 10);
+    log_text(str);
+
+    /* Test 2: quarter LCD update */
+    make_gradient_rect(YUV_WIDTH/2, YUV_HEIGHT/2);
+
+    frame_count = 0;
+    rb->sleep(0); /* sync to tick */
+    time_start = *rb->current_tick;
+    while((time_end = *rb->current_tick) - time_start < DURATION)
+    {
+        rb->lcd_blit_yuv(yuvbuf, 0, 0, YUV_WIDTH,
+                         part14_x, part14_y, part14_w, part14_h);
+        frame_count++;
+    }
+    fps = calc_tenth_fps(frame_count, time_end - time_start);
+    rb->snprintf(str, sizeof(str), "1/4: %d.%d fps", fps / 10, fps % 10);
+    log_text(str);
+}
+#endif
+
 #ifdef HAVE_REMOTE_LCD
 static void time_remote_update(void)
 {
@@ -318,6 +406,9 @@ enum plugin_status plugin_start(const void* parameter)
 #endif
     time_main_update();
     rb->sleep(HZ);
+#if defined(HAVE_LCD_COLOR) && (MEMORYSIZE > 2)
+    time_main_yuv();
+#endif
 #if LCD_DEPTH < 4
     time_greyscale();
 #endif
-- 
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