digging through/documenting legacy code

src/drivers/elphel/legacy_defines.h

 ///@file legacy_defines.h
+#define X313_MAXWIDTH       65536 // 4096 // multiple of 128
+#define X313_MAXHEIGHT      65536 // 16384 // multiple of 16 - unsafe - not enough room for black level subtraction
+#define X313_MAXHEIGHT_SAFE 65536 // 4096 // multiple of 16  OK for black level subtraction TODO: disable black level if unsafe
+#define X313_MAP_FRAME ((X313_MAP_FPN) + (X313_MAXWIDTH) * (X313_MAXHEIGHT_SAFE))
 #define X313_MARGINS 4
+#define X313_TILEHOR 16
+#define X313_TILEVERT 16
+#define   X313_TIMESTAMPLEN 28 // pixels used for timestamp (in linescan mode added after the line)
+
 #define   X3X3_RSTSENSDCM          // FPGA DCM can fail after clock change, needs to be reset
 #define   X3X3_SENSDCM_CLK2X_RESET // reset pclk2x DCM also
 #define I2C359_CLK_NUMBER 4
@@ -11,3 +19,62 @@
 #define     CCAM_ARST_OFF
 #define     CCAM_RESET_MCONTR_ON  // Set mode that resets memory controller pointers after each frame sync. TODO: Later - make it work without?
 #define     CCAM_ENDFRAMES_EN     // Enable ending frame being compressed if no more data will be available (frame ended before specified number of blocks compressed)
+
+
+#define     CCAM_DCLK_ON
+#define     CCAM_CNVEN_OFF
+#define     CCAM_MRST_ON
+#define     CCAM_EXTERNALTS_EN // Maybe use default as enabled - yes, it will not be active if not available
+#define     CCAM_CNVEN_ON
+#define     CCAM_POSRST
+
+#define     X3X3_SENSDCM_HACT_ZERO
+#define     X3X3_SENSDCM_HACT_LATE90
+#define     X3X3_SENSDCM_HACT_EARLY90
+
+#define     X3X3_SENSDCM_INC
+#define     X3X3_SENSDCM_DEC
+#define     X3X3_SENSDCM_INC90
+#define     X3X3_SENSDCM_DEC90
+
+
+ #define COMPCMD_DEMOS(x) ((1<<13) | (((x) & 0x0f) << 9))
+ //  6 blocks output per macroblock:
+ #define DEMOS_MONO6     0 // original monochrome YCbCr 4:2:0 with zeroed color components
+ #define DEMOS_COLOR18   1 // original color YCbCr 4:2:0, 3x3 demosaic (18x18 tiles)
+ #define DEMOS_JP46      2 // original jp4, (4:2:0, zero color), decoded by regular JPEG decoder
+ #define DEMOS_JP46DC    3 // dc-improved: same as DEMOS_JP46, but DC difference separate for each component
+ #define DEMOS_COLOR20   4 // color YCbCr 4:2:0, 5x5 demosaic (20x20 tiles) - not yet implemented
+//  4 blocks output per macroblock:
+ #define DEMOS_JP4       5 // similar to DEMOS_JP46 ,   but zero color components are not output
+ #define DEMOS_JP4DC     6 // similar to DEMOS_JP46DC , but zero color components are not output
+ #define DEMOS_JP4DIFF   7 // differential red := (R-G1), blue:=(B-G1), green=G1, green2 (G2-G1). G1 is defined by Bayer shift, any pixel can be used
+ #define DEMOS_JP4HDR    8 // similar to DEMOS_JP4DIFF, but second green (opposite from the reference one) is encoded without subtracting:
+                           // red := (R-G1), blue:=(B-G1), green=G1, green2 (high gain)=G2) (G1 and G2 - diagonally opposite)
+ #define DEMOS_JP4DIFF2  9 // similar to DEMOS_JP4DIFF, but all differences are divided by 2 to fit into 8 bit range:
+                           // red := (R-G1)/2, blue:=(B-G1)/2, green=G1, green2 (G2-G1)/2
+ #define DEMOS_JP4HDR2  10 // red := (R-G1)/2, blue:=(B-G1)/2, green=G1, green2 (high gain)=G2),
+ #define DEMOS_MONO4    14 // monochrome, but the block scan order is still the same as in YCbCr 4:2:0 (macroblocks in scan order, block in 2x2 macroblock in scan order)
+
+// [8:7] == 0,1 - NOP, 2 - disable, 3 - enable subtracting of average value (DC component), bypassing DCT
+
+ #define COMPCMD_DCSUB(x) ((1<<8) | (((x) & 1) << 7))
+
+// [6] == 1 - enable quantization bank select, 0 - disregard bits [5:3]
+// [5:3] = quantization page number (0..7)
+
+ #define COMPCMD_QTAB(x) ((1<<6) | (((x) & 7) << 3))
+
+
+
+
+#define CONFIG_ETRAX_ELPHEL_MT9X001 1
+
+ void x313_dma_stop(){}
+ void x313_dma_init(){}
+ void reset_compressor(){}
+
+
+
+
+// X3X3_SEQ_SEND1(frame16,  X313_WA_DCR0, X353_DCR0(SENSTRIGEN,async));

src/drivers/elphel/multi10359.c

@@ -115,7 +115,6 @@
 #include "pgm_functions.h"
 //#include "x3x3.h"           // hardware definitions
 #include "legacy_defines.h" // temporarily
-
 #include "sensor_i2c.h"
 
 /**