Add command to change frame dimentions

src/drivers/elphel/circbuf.c

@@ -692,6 +692,8 @@ loff_t circbuf_lseek(struct file *file, loff_t offset, int orig)
  * @return      number of bytes read form \e buf
  */
 unsigned short circbuf_quality = 100;
+unsigned short circbuf_height = 1936;
+unsigned short circbuf_width = 2592;
 ssize_t circbuf_write(struct file *file, const char *buf, size_t count, loff_t *off)
 {
 	unsigned long p;
@@ -746,6 +748,17 @@ ssize_t circbuf_write(struct file *file, const char *buf, size_t count, loff_t *
 			}
 		}
 		break;
+	case 6:
+		{
+		unsigned int w, h;
+		int res = sscanf(&buf[2], "%u:%u", &w, &h);
+		if (res == 2) {
+			circbuf_width = w;
+			circbuf_height = h;
+			dev_dbg(g_dev_ptr, "set image size %u x %u\n", w, h);
+		}
+		}
+		break;
 	}
 	/* debug code end */
 

src/drivers/elphel/circbuf.h

@@ -44,6 +44,8 @@ extern struct circbuf_priv_t *circbuf_priv_ptr;
 
 /* debug code follows */
 extern unsigned short circbuf_quality;
+extern unsigned short circbuf_height;
+extern unsigned short circbuf_width;
 /* end of debug code */
 
 #endif /* _CIRCBUF_H */

src/drivers/elphel/sensor_common.c

@@ -7,8 +7,9 @@
  * - interrupts handling
  * - tasklets
  * - device driver that includes waiting for the next frame regardless of compression
- *
- * Copyright (C) 2016 Elphel, Inc.
+ */
+
+/* Copyright (C) 2016 Elphel, Inc.
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -82,7 +83,7 @@
 #define IMAGEACQ_DRIVER_NAME      "Elphel (R) Model 393 Image Acquisition device driver"
 /** @brief The size in bytes of L2 cache invalidation area. This size must be aligned to cache line size.
  * 16 kbytes seems to be good starting point. */
-#define L2_INVAL_SIZE             (16 * 1024)
+#define L2_INVAL_SIZE             (32 * 1024)
 
 /**@struct jpeg_ptr_t
  * @brief \e jpeg_ptr_t structure contains read and write pointers along with
@@ -358,8 +359,10 @@ inline void updateIRQFocus(struct jpeg_ptr_t *jptr)
 
 inline static void set_default_interframe(struct interframe_params_t *params)
 {
-	params->height = 1936;
-	params->width = 2592;
+//	params->height = 1936;
+//	params->width = 2592;
+	params->height = circbuf_height;
+	params->width = circbuf_width;
 	params->byrshift = 3;
 	params->color = 0;
 	params->quality2 = circbuf_quality;
@@ -543,7 +546,7 @@ static irqreturn_t frame_sync_irq_handler(int irq, void *dev_id)
  * flag meaning that interrupts are enabled during processing. Such behavior is recommended in LDD3.
  * @param[in]   irq   interrupt number
  * @param[in]   dev_id pointer to driver's private data structure #jpeg_ptr_t corresponding to
- * the channel which raise interrupt
+ * the channel which raised interrupt
  * @return \e IRQ_HANDLED if interrupt was processed and \e IRQ_NONE otherwise
  */
 static irqreturn_t compressor_irq_handler(int irq, void *dev_id)