Add support for .xbm bitmap file

.xbm is easy to include in C as source file. It could be viewed
and edited directly without need to be converted between images
and C array.

8 files changed, 175 insertions, 0 deletions

diff --git a/src/res/bluetooth.xbm b/src/res/bluetooth.xbm
new file mode 100644
index 0000000..fa8ba8d
--- /dev/null
+++ b/src/res/bluetooth.xbm
@@ -0,0 +1,20 @@
+#define bluetooth_width 24
+#define bluetooth_height 66
+static unsigned char bluetooth_bits[] = {
+   0x04, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x14, 0x00, 0x00, 0x25, 0x00, 0x00,
+   0x16, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x16, 0x00, 0x00, 0x25, 0x00, 0x00,
+   0x14, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00,
+   0x0c, 0x00, 0x00, 0x14, 0x00, 0x00, 0x25, 0x00, 0x00, 0x16, 0x01, 0x00,
+   0x0c, 0x02, 0x00, 0x16, 0x01, 0x00, 0x25, 0x00, 0x00, 0x14, 0x00, 0x00,
+   0x0c, 0x00, 0x00, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x0c, 0x00, 0x00,
+   0x14, 0x00, 0x00, 0x25, 0x08, 0x00, 0x16, 0x11, 0x00, 0x0c, 0x12, 0x00,
+   0x16, 0x11, 0x00, 0x25, 0x08, 0x00, 0x14, 0x00, 0x00, 0x0c, 0x00, 0x00,
+   0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x14, 0x40, 0x00,
+   0x25, 0x88, 0x00, 0x16, 0x11, 0x01, 0x0c, 0x12, 0x01, 0x16, 0x11, 0x01,
+   0x25, 0x88, 0x00, 0x14, 0x40, 0x00, 0x0c, 0x00, 0x00, 0x04, 0x00, 0x00,
+   0x04, 0x00, 0x00, 0x0c, 0x00, 0x02, 0x14, 0x40, 0x04, 0x25, 0x88, 0x08,
+   0x16, 0x11, 0x09, 0x0c, 0x12, 0x09, 0x16, 0x11, 0x09, 0x25, 0x88, 0x08,
+   0x14, 0x40, 0x04, 0x0c, 0x00, 0x02, 0x04, 0x00, 0x00, 0x04, 0x00, 0x10,
+   0x0c, 0x00, 0x22, 0x14, 0x40, 0x44, 0x25, 0x88, 0x88, 0x16, 0x11, 0x89,
+   0x0c, 0x12, 0x89, 0x16, 0x11, 0x89, 0x25, 0x88, 0x88, 0x14, 0x40, 0x44,
+   0x0c, 0x00, 0x22, 0x04, 0x00, 0x10 };
diff --git a/src/res/foss-asia-1.xbm b/src/res/foss-asia-1.xbm
new file mode 100644
index 0000000..d769f19
--- /dev/null
+++ b/src/res/foss-asia-1.xbm
@@ -0,0 +1,14 @@
+#define foss_asia_1_width 44
+#define foss_asia_1_height 22
+static unsigned char foss_asia_1_bits[] = {
+   0xf8, 0xf3, 0x1f, 0xff, 0xf9, 0x0f, 0xfc, 0xfb, 0xbf, 0xff, 0xfd, 0x0f,
+   0x0c, 0x18, 0xb0, 0x01, 0x0c, 0x00, 0x0c, 0x18, 0xb0, 0x01, 0x0c, 0x00,
+   0xff, 0x1b, 0xb0, 0xff, 0xfc, 0x07, 0xff, 0x1b, 0x30, 0xff, 0xf9, 0x0f,
+   0x0c, 0x18, 0x30, 0x80, 0x01, 0x0c, 0x0c, 0x18, 0x30, 0x80, 0x01, 0x0c,
+   0x0c, 0xf8, 0xbf, 0xff, 0xfd, 0x0f, 0x0c, 0xf0, 0x9f, 0xff, 0xfc, 0x07,
+   0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00,
+   0xff, 0x81, 0xff, 0x00, 0xfc, 0x07, 0xff, 0xc3, 0xff, 0x30, 0xfc, 0x0f,
+   0x00, 0xc3, 0x00, 0x30, 0x00, 0x0c, 0x00, 0xc3, 0x00, 0x30, 0x00, 0x0c,
+   0xfe, 0xc3, 0x7f, 0x30, 0xf8, 0x0f, 0xff, 0x83, 0xff, 0x30, 0xfc, 0x0f,
+   0x03, 0x03, 0xc0, 0x30, 0x0c, 0x0c, 0x03, 0x03, 0xc0, 0x30, 0x0c, 0x0c,
+   0xff, 0xc3, 0xff, 0x30, 0xfc, 0x0f, 0xfe, 0xc3, 0x7f, 0x30, 0xf8, 0x0f };
diff --git a/src/res/foss-asia-2.xbm b/src/res/foss-asia-2.xbm
new file mode 100644
index 0000000..5a75f5d
--- /dev/null
+++ b/src/res/foss-asia-2.xbm
@@ -0,0 +1,14 @@
+#define foss_asia_2_width 44
+#define foss_asia_2_height 22
+static unsigned char foss_asia_2_bits[] = {
+   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xf9, 0x8f, 0xff, 0xfc, 0x07,
+   0xfe, 0xfd, 0xdf, 0xff, 0xfe, 0x07, 0x06, 0x0c, 0xd8, 0x00, 0x06, 0x00,
+   0xff, 0x0d, 0xd8, 0x7f, 0xfe, 0x03, 0xff, 0x0d, 0x98, 0xff, 0xfc, 0x07,
+   0x06, 0x0c, 0x18, 0xc0, 0x00, 0x06, 0x06, 0xfc, 0xdf, 0xff, 0xfe, 0x07,
+   0x06, 0xf8, 0xcf, 0x7f, 0xfe, 0x03, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00,
+   0x06, 0x00, 0x00, 0x18, 0x00, 0x00, 0x06, 0x00, 0x00, 0x18, 0x00, 0x00,
+   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x87, 0xff, 0x99, 0xff, 0x01,
+   0xfe, 0xcf, 0xff, 0x99, 0xff, 0x03, 0x00, 0xcc, 0x00, 0x18, 0x00, 0x03,
+   0xfc, 0xcf, 0xff, 0x18, 0xff, 0x03, 0xfe, 0x8f, 0xff, 0x99, 0xff, 0x03,
+   0x06, 0x0c, 0x80, 0x99, 0x01, 0x03, 0xfe, 0xcf, 0xff, 0x99, 0xff, 0x03,
+   0xfc, 0xcf, 0xff, 0x18, 0xff, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
diff --git a/src/res/fossasia.xbm b/src/res/fossasia.xbm
new file mode 100644
index 0000000..e6a5a00
--- /dev/null
+++ b/src/res/fossasia.xbm
@@ -0,0 +1,14 @@
+#define fossasia_width 44
+#define fossasia_height 22
+static unsigned char fossasia_bits[] = {
+   0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+   0x9c, 0xc7, 0xf3, 0x1c, 0x2f, 0x07, 0x42, 0x28, 0x08, 0xa0, 0x20, 0x08,
+   0x42, 0x28, 0x08, 0xa0, 0x20, 0x08, 0x5f, 0xc8, 0x71, 0x3c, 0x27, 0x0f,
+   0x42, 0x08, 0x82, 0x22, 0xa8, 0x08, 0x42, 0x08, 0x82, 0x22, 0xa8, 0x08,
+   0x82, 0xe7, 0x79, 0xbc, 0x27, 0x0f, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+   0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xdf, 0x0f,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0x0f, 0x63, 0x38, 0x0c, 0xe3, 0xd0, 0x08,
+   0xbd, 0xd7, 0xf7, 0x5f, 0xdf, 0x07, 0xbd, 0xd7, 0xf7, 0x5f, 0xdf, 0x07,
+   0xa0, 0x37, 0x8e, 0xc3, 0xd8, 0x00, 0xbd, 0xf7, 0x7d, 0xdd, 0x57, 0x07,
+   0xbd, 0xf7, 0x7d, 0xdd, 0x57, 0x07, 0x7d, 0x18, 0x86, 0x43, 0xd8, 0x00,
+   0xfd, 0xff, 0xff, 0xff, 0xff, 0x0f, 0xfd, 0xff, 0xff, 0xff, 0xff, 0x0f };
diff --git a/src/resource.c b/src/resource.c
new file mode 100644
index 0000000..ed4766b
--- /dev/null
+++ b/src/resource.c
@@ -0,0 +1,18 @@
+#include "resource.h"
+
+#include "res/bluetooth.xbm"
+#include "res/foss-asia-2.xbm"
+
+xbm_t bluetooth = {
+	.bits = bluetooth_bits, 
+	.w = bluetooth_width, 
+	.h = bluetooth_height,
+	.fh = 11
+};
+
+xbm_t splash = {
+	.bits = foss_asia_2_bits, 
+	.w = foss_asia_2_width, 
+	.h = foss_asia_2_height,
+	.fh = 11
+};
\ No newline at end of file
diff --git a/src/resource.h b/src/resource.h
new file mode 100644
index 0000000..df91e37
--- /dev/null
+++ b/src/resource.h
@@ -0,0 +1,10 @@
+#ifndef __RES_H__
+#define __RES_H__
+
+#include <stdint.h>
+#include "xbm.h"
+
+extern xbm_t bluetooth;
+extern xbm_t splash;
+
+#endif /* __RES_H__ */
diff --git a/src/xbm.c b/src/xbm.c
new file mode 100644
index 0000000..9c16811
--- /dev/null
+++ b/src/xbm.c
@@ -0,0 +1,67 @@
+#include "xbm.h"
+#include <stdlib.h>
+#include <memory.h>
+
+#define ALIGNBIT(x) (((x % 8)>0)*8 + (x / 8) * 8)
+
+/**
+ * Draw bitmap file to fb at (col, row)
+ * if bitmap file larger than fb, it will be stripped out
+ */
+void xbm2fb(xbm_t *xbm, uint16_t *fb, int col, int row)
+{
+	int W = ALIGNBIT(xbm->w);
+	uint16_t *tmpfb = malloc(W * sizeof(uint16_t));
+	memset(tmpfb, 0, W * sizeof(uint16_t));
+
+	if ((xbm->h + row) >= 0 && col >= 0) {
+
+		for (int h = 0; h < xbm->h; h++) {
+			for (int w = 0; w < W; w++) {
+				tmpfb[w] |= ((xbm->bits[h*(W/8) + w/8] >> (w % 8)) & 0x01) 
+					<< (h+row);
+			}
+		}
+	}
+	for (int i=0; i < xbm->w; i++) {
+		fb[col+i] = tmpfb[i];
+	}
+}
+
+void xbm2fb_dirty(xbm_t *xbm, uint16_t *fb, int col, int row)
+{
+	// Byte align for xbm bytes
+	int W = ALIGNBIT(xbm->w);
+
+	for (int h = 0; h < xbm->h; h++) {
+		for (int w = 0; w < W; w++) {
+			fb[w] |= ((xbm->bits[h*(W/8) + w/8] >> (w % 8)) & 0x01) << (h+row);
+		}
+	}
+}
+
+/**
+ * Crop image horizontaly
+ * TODO: vertical crop
+ * 
+ */
+xbm_t *xbm_croph(xbm_t *xbm, xbm_t *frame, int from_row, int to_row)
+{
+	int rb = xbm->w / 8 + ((xbm->w % 8)>0); // Number of bytes in a row
+	if (to_row * rb > rb * xbm->h)
+		return NULL;
+
+	frame->bits = &xbm->bits[rb * from_row];
+	frame->w = xbm->w;
+	frame->h = to_row - from_row;
+	frame->fh = xbm->fh;
+
+	return frame;
+}
+
+xbm_t *extract_frame(xbm_t *xbm, xbm_t *frame, int frame_index)
+{
+	int from = frame_index * xbm->fh;
+	int to = from + xbm->fh;
+	return xbm_croph(xbm, frame, from, to);
+}
\ No newline at end of file
diff --git a/src/xbm.h b/src/xbm.h
new file mode 100644
index 0000000..b3f2c52
--- /dev/null
+++ b/src/xbm.h
@@ -0,0 +1,18 @@
+#ifndef __XBM_H__
+#define __XBM_H__
+
+#include <stdint.h>
+
+typedef struct {
+	uint8_t *bits;
+	int     w; // Width
+	int     h; // Height
+	int     fh; // Frame height
+} xbm_t;
+
+void xbm2fb(xbm_t *xbm, uint16_t *fb, int col, int row);
+void xbm2fb_dirty(xbm_t *xbm, uint16_t *fb, int col, int row);
+xbm_t *xbm_croph(xbm_t *xbm, xbm_t *frame, int from_row, int to_row);
+xbm_t *extract_frame(xbm_t *xbm, xbm_t *frame, int frame_index);
+
+#endif /* __XBM_H__ */