Adjust buffer sizes to reduce memory consumption with CMOSIS20 camera

2 files changed, 6 insertions, 5 deletions

diff --git a/base.c b/base.c
index 1adc185..20183b0 100644
--- a/base.c
+++ b/base.c
@@ -111,9 +111,8 @@ pcilib_context_t *ipecamera_init(pcilib_t *pcilib) {
 	    return NULL;
 	}
 
-	ctx->buffer_size = IPECAMERA_DEFAULT_BUFFER_SIZE;
-
 	ctx->dim.bpp = sizeof(ipecamera_pixel_t) * 8;
+	ctx->buffer_size = IPECAMERA_DEFAULT_BUFFER_SIZE;
 
 	FIND_REG(status_reg, "fpga", "status");
 	FIND_REG(control_reg, "fpga", "control");
@@ -136,6 +135,7 @@ pcilib_context_t *ipecamera_init(pcilib_t *pcilib) {
 	    break;
 	 case IPECAMERA_FIRMWARE_CMOSIS20:
 	    ctx->firmware = value;
+	    ctx->buffer_size = IPECAMERA_DEFAULT_CMOSIS20_BUFFER_SIZE;
 	    err = pcilib_add_registers(pcilib, 0, cmosis20000_registers);
 	    break;
 	 default:
diff --git a/private.h b/private.h
index 18138e7..0e16044 100644
--- a/private.h
+++ b/private.h
@@ -25,10 +25,11 @@
 //#define IPECAMERA_BUG_INCOMPLETE_PACKETS	//**< Support incomplete packets, i.e. check for frame magic even if full frame size is not reached yet (slow) */
 //#define IPECAMERA_ANNOUNCE_READY		//**< Announce new event only after the reconstruction is done */
 //#define IPECAMERA_CLEAN_ON_START		//**< Read all the data from DMA before starting of recording */
-#define IPECAMERA_ADJUST_BUFFER_SIZE		//**< Adjust default buffer size based on the hardware capabilities */
+//#define IPECAMERA_ADJUST_BUFFER_SIZE		//**< Adjust default buffer size based on the hardware capabilities (number of frames stored in the FPGA memory) */
 
-#define IPECAMERA_DEFAULT_BUFFER_SIZE 256  	//**< should be power of 2 */
-#define IPECAMERA_RESERVE_BUFFERS 2		//**< Return Frame is Lost error, if requested frame will be overwritten after specified number of frames
+#define IPECAMERA_DEFAULT_BUFFER_SIZE 256  	//**< number of buffers in a ring buffer, should be power of 2 */
+#define IPECAMERA_DEFAULT_CMOSIS20_BUFFER_SIZE 64 //*< overrides number of buffers for CMOSIS20 sensor to reduce memory consumption */
+#define IPECAMERA_RESERVE_BUFFERS 4		//**< Return Frame is Lost error, if requested frame will be overwritten after specified number of frames
 
 #define IPECAMERA_DMA_TIMEOUT 50000		//**< Default DMA timeout */
 #define IPECAMERA_TRIGGER_TIMEOUT 200000	//**< In trigger call allow specified timeout for camera to get out of busy state. Set 0 to fail immideatly */