working on fast write (8eee4caa) · Commits · Elphel / elphel-apps-camogm

src/camogm.c

+37 −32

Original line number	Original line	Diff line number	Diff line
	@@ -278,7 +278,7 @@ void camogm_init(camogm_state state, char pipe_name, uint16_t port_num)
	state->rawdev.curr_pos_w = state->rawdev.start_pos;		state->rawdev.curr_pos_w = state->rawdev.start_pos;
	state->rawdev.curr_pos_r = state->rawdev.start_pos;		state->rawdev.curr_pos_r = state->rawdev.start_pos;
	state->active_chn = ALL_CHN_INACTIVE;		state->active_chn = ALL_CHN_INACTIVE;
	state->rawdev.mmap_default_size = MMAP_CHUNK_SIZE;		state->rawdev.mmap_default_size = MMAP_CHUNK_SIZE; // only used for camogm_read
	state->sock_port = port_num;		state->sock_port = port_num;

	// state->writer_params.data_ready = false;		// state->writer_params.data_ready = false;
	@@ -337,6 +337,7 @@ int camogm_start(camogm_state *state)
	{		{
	int timestamp_start;		int timestamp_start;
	int rslt;		int rslt;
			int dummy;
	int next_metadata_start, next_jpeg_len, fp;		int next_metadata_start, next_jpeg_len, fp;
	int port = state->port_num;		int port = state->port_num;

	@@ -503,7 +504,7 @@ int camogm_start(camogm_state *state)
	}		}
	// and read it		// and read it
	lseek(state->fd_head[chn], 0, 0);		lseek(state->fd_head[chn], 0, 0);
	read(state->fd_head[chn], state->jpegHeader[chn], state->head_size[chn]);		dummy=read(state->fd_head[chn], state->jpegHeader[chn], state->head_size[chn]); //?
	// Restore read pointer to the original (now there may be no frame ready there yet)		// Restore read pointer to the original (now there may be no frame ready there yet)
	lseek(state->fd_circ[chn], state->cirbuf_rp[chn], SEEK_SET);		lseek(state->fd_circ[chn], state->cirbuf_rp[chn], SEEK_SET);
	state->image_size[chn] = 0;		state->image_size[chn] = 0;
	@@ -661,31 +662,32 @@ int sendImageFrame(camogm_state *state)
	// prepare a packet to be sent (a lst of memory chunks)		// prepare a packet to be sent (a lst of memory chunks)
	state->chunk_index = 0;		state->chunk_index = 0;
	state->packetchunks[state->chunk_index ].bytes = 1;		state->packetchunks[state->chunk_index ].bytes = 1;
	state->packetchunks[state->chunk_index++].chunk = &frame_packet_type;		state->packetchunks[state->chunk_index++].chunk = &frame_packet_type; // [0]
	if (state->exif > 0) { // insert Exif/Tiff		if (state->exif > 0) { // insert Exif/Tiff
	D4(fprintf(debug_file, "_7_"));		D4(fprintf(debug_file, "_7_"));
	if (state->this_frame_params[port].color == COLORMODE_RAW) { // Tiff		if (state->this_frame_params[port].color == COLORMODE_RAW) { // Tiff
	D4(fprintf(debug_file, "_8a_"));		D4(fprintf(debug_file, "_8a_"));
	state->packetchunks[state->chunk_index ].bytes = state->exifSize[port]; // Tiff Header length		state->packetchunks[state->chunk_index ].bytes = state->exifSize[port]; // Tiff Header length [1]
	state->packetchunks[state->chunk_index++].chunk = state->ed[port]; // Tiff Header		state->packetchunks[state->chunk_index++].chunk = state->ed[port]; // Tiff Header

	} else { // JPEG/JP4		} else { // JPEG/JP4
	D4(fprintf(debug_file, "_8b_"));		D4(fprintf(debug_file, "_8b_"));
	state->packetchunks[state->chunk_index ].bytes = 2;		state->packetchunks[state->chunk_index ].bytes = 2;
	state->packetchunks[state->chunk_index++].chunk = state->jpegHeader[port];		state->packetchunks[state->chunk_index++].chunk = state->jpegHeader[port]; // [1] jpeg marker
	state->packetchunks[state->chunk_index ].bytes = state->exifSize[port];		state->packetchunks[state->chunk_index ].bytes = state->exifSize[port];
	state->packetchunks[state->chunk_index++].chunk = state->ed[port];		state->packetchunks[state->chunk_index++].chunk = state->ed[port]; // [2] exif
	state->packetchunks[state->chunk_index ].bytes = state->head_size[port] - 2;		state->packetchunks[state->chunk_index ].bytes = state->head_size[port] - 2;
	state->packetchunks[state->chunk_index++].chunk = &(state->jpegHeader[port][2]);		state->packetchunks[state->chunk_index++].chunk = &(state->jpegHeader[port][2]); // [3] rest of jpeg header
	}		}
	} else {		} else {
	D4(fprintf(debug_file, "_8_"));		D4(fprintf(debug_file, "_8_"));
	state->packetchunks[state->chunk_index ].bytes = state->head_size[port];		state->packetchunks[state->chunk_index ].bytes = state->head_size[port];
	state->packetchunks[state->chunk_index++].chunk = state->jpegHeader[port];		state->packetchunks[state->chunk_index++].chunk = state->jpegHeader[port]; // [1] all of jpeg marker
	}		}
	D4(fprintf(debug_file, "_9_"));		D4(fprintf(debug_file, "_9_"));

	/* Jpeg/Tiff image data may be split in two segments (rolled over buffer end) - process both variants */		/* Jpeg/Tiff image data may be split in two segments (rolled over buffer end) - process both variants */
			state->chunk_data_index = state->chunk_index; // index of the first data segment
	if ((state->cirbuf_rp[port] + state->jpeg_len) > state->circ_buff_size[port]) { // two segments		if ((state->cirbuf_rp[port] + state->jpeg_len) > state->circ_buff_size[port]) { // two segments
	/* copy from the beginning of the frame to the end of the buffer */		/* copy from the beginning of the frame to the end of the buffer */
	D4(fprintf(debug_file, "_10_"));		D4(fprintf(debug_file, "_10_"));
	@@ -694,14 +696,13 @@ int sendImageFrame(camogm_state *state)
	/* copy from the beginning of the buffer to the end of the frame */		/* copy from the beginning of the buffer to the end of the frame */
	state->packetchunks[state->chunk_index ].bytes = state->jpeg_len - (state->circ_buff_size[port] - state->cirbuf_rp[port]);		state->packetchunks[state->chunk_index ].bytes = state->jpeg_len - (state->circ_buff_size[port] - state->cirbuf_rp[port]);
	state->packetchunks[state->chunk_index++].chunk = (unsigned char*)&ccam_dma_buf[state->port_num][0];		state->packetchunks[state->chunk_index++].chunk = (unsigned char*)&ccam_dma_buf[state->port_num][0];
	state->writer_params.segments = 2;		state->data_segments = 2;
	} else { // single segment		} else { // single segment
	D4(fprintf(debug_file, "_11_"));		D4(fprintf(debug_file, "_11_"));

	/* copy from the beginning of the frame to the end of the frame (no buffer rollovers) */		/* copy from the beginning of the frame to the end of the frame (no buffer rollovers) */
	state->packetchunks[state->chunk_index ].bytes = state->jpeg_len;		state->packetchunks[state->chunk_index ].bytes = state->jpeg_len;
	state->packetchunks[state->chunk_index++].chunk = (unsigned char*)&ccam_dma_buf[state->port_num][state->cirbuf_rp[port] >> 2];		state->packetchunks[state->chunk_index++].chunk = (unsigned char*)&ccam_dma_buf[state->port_num][state->cirbuf_rp[port] >> 2];
	state->writer_params.segments = 1;		state->data_segments = 1;
	}		}
	D4(fprintf(debug_file, "\tcirbuf_rp[%d] = 0x%x\t", port, state->cirbuf_rp[port]));		D4(fprintf(debug_file, "\tcirbuf_rp[%d] = 0x%x\t", port, state->cirbuf_rp[port]));
	D5(fprintf(debug_file, "_12_\n"));		D5(fprintf(debug_file, "_12_\n"));
	@@ -709,10 +710,8 @@ int sendImageFrame(camogm_state *state)
	state->packetchunks[state->chunk_index ].bytes = 2;		state->packetchunks[state->chunk_index ].bytes = 2;
	state->packetchunks[state->chunk_index++].chunk = (unsigned char*)trailer;		state->packetchunks[state->chunk_index++].chunk = (unsigned char*)trailer;
	}		}

	dbg_show_packetchunks(state);		dbg_show_packetchunks(state);


	D6(fprintf(debug_file, "_12.5_ before CAMOGM_FORMAT_XXX @ %07d\n",get_fpga_usec(state->fd_fparmsall[0], 0)));		D6(fprintf(debug_file, "_12.5_ before CAMOGM_FORMAT_XXX @ %07d\n",get_fpga_usec(state->fd_fparmsall[0], 0)));

	switch (state->format) {		switch (state->format) {
	@@ -768,7 +767,7 @@ static void dbg_show_packetchunks(camogm_state *state)
	{		{
	int i;		int i;
	for (i = 0; i < state->chunk_index; i++) {		for (i = 0; i < state->chunk_index; i++) {
	D4(fprintf(debug_file, "packetchunk[%d]: ptr = %p, size = %d\n", i, state->packetchunks[i].chunk, state->packetchunks[i].bytes));		D4(fprintf(debug_file, "packetchunk[%d]: ptr = %p, size = %ld\n", i, state->packetchunks[i].chunk, state->packetchunks[i].bytes));
	}		}
	}		}

	@@ -1918,7 +1917,7 @@ static int get_sysfs_name(const char dev_name, char sys_name, size_t str_sz, i
	*/		*/
	static int get_disk_range(const char name, struct range rng)		static int get_disk_range(const char name, struct range rng)
	{		{
	int ret = 0;		int ret = 0, dummy;
	int fd;		int fd;
	uint64_t val;		uint64_t val;
	char data[SMALL_BUFF_LEN] = {0};		char data[SMALL_BUFF_LEN] = {0};
	@@ -1929,7 +1928,7 @@ static int get_disk_range(const char name, struct range rng)
	if (strlen(sysfs_name) > 0) {		if (strlen(sysfs_name) > 0) {
	fd = open(sysfs_name, O_RDONLY);		fd = open(sysfs_name, O_RDONLY);
	if (fd >= 0) {		if (fd >= 0) {
	read(fd, data, SMALL_BUFF_LEN);		dummy=read(fd, data, SMALL_BUFF_LEN);
	if ((val = strtoull(data, NULL, 10)) != 0)		if ((val = strtoull(data, NULL, 10)) != 0)
	rng->from = val;		rng->from = val;
	else		else
	@@ -1945,7 +1944,7 @@ static int get_disk_range(const char name, struct range rng)
	if (get_sysfs_name(name, sysfs_name, ELPHEL_PATH_MAX, TYPE_SIZE) > 0) {		if (get_sysfs_name(name, sysfs_name, ELPHEL_PATH_MAX, TYPE_SIZE) > 0) {
	fd = open(sysfs_name, O_RDONLY);		fd = open(sysfs_name, O_RDONLY);
	if (fd >= 0) {		if (fd >= 0) {
	read(fd, data, SMALL_BUFF_LEN);		dummy=read(fd, data, SMALL_BUFF_LEN);
	if ((val = strtoull(data, NULL, 10)) != 0)		if ((val = strtoull(data, NULL, 10)) != 0)
	rng->to = rng->from + val;		rng->to = rng->from + val;
	else		else
	@@ -1974,19 +1973,20 @@ static int set_disk_range(const struct range *rng)
	int ret = 0;		int ret = 0;
	char buff[SMALL_BUFF_LEN] = {0};		char buff[SMALL_BUFF_LEN] = {0};
	int len;		int len;
			int dummy;

	fd = open(SYSFS_AHCI_LBA_START, O_WRONLY);		fd = open(SYSFS_AHCI_LBA_START, O_WRONLY);
	if (fd < 0)		if (fd < 0)
	return -1;		return -1;
	len = snprintf(buff, SMALL_BUFF_LEN, "%llu", rng->from);		len = snprintf(buff, SMALL_BUFF_LEN, "%llu", rng->from);
	write(fd, buff, len + 1);		dummy=write(fd, buff, len + 1);
	close(fd);		close(fd);

	fd = open(SYSFS_AHCI_LBA_END, O_WRONLY);		fd = open(SYSFS_AHCI_LBA_END, O_WRONLY);
	if (fd < 0)		if (fd < 0)
	return -1;		return -1;
	len = snprintf(buff, SMALL_BUFF_LEN, "%llu", rng->to);		len = snprintf(buff, SMALL_BUFF_LEN, "%llu", rng->to);
	write(fd, buff, len + 1);		dummy=write(fd, buff, len + 1);
	close(fd);		close(fd);

	return ret;		return ret;
	@@ -2019,16 +2019,17 @@ unsigned int select_port(camogm_state *state)
	if (is_chn_active(state, i)) {		if (is_chn_active(state, i)) {
	file_pos = lseek(state->fd_circ[i], 0, SEEK_CUR);		file_pos = lseek(state->fd_circ[i], 0, SEEK_CUR);
	if (file_pos != -1) {		if (file_pos != -1) {
	free_sz = lseek(state->fd_circ[i], LSEEK_CIRC_FREE, SEEK_END);		free_sz = lseek(state->fd_circ[i], LSEEK_CIRC_FREE, SEEK_END); // maybe ==-1 if new frame is not yet ready?
	lseek(state->fd_circ[i], file_pos, SEEK_SET);		lseek(state->fd_circ[i], file_pos, SEEK_SET);
	if (state->prog_state == STATE_STARTING \|\| state->prog_state == STATE_RUNNING)		if (state->prog_state == STATE_STARTING \|\| state->prog_state == STATE_RUNNING)
	D6(fprintf(debug_file, "port %i = %li, ", i, free_sz));		D6(fprintf(debug_file, "port %i = %li, ", i, free_sz));
			if ((free_sz < min_sz && free_sz >= 0) \|\| min_sz == -1) {
	if (free_sz < CAMOGM_MIN_BUF_FRAMES * state->image_size[i]) {		if (free_sz < CAMOGM_MIN_BUF_FRAMES * state->image_size[i]) {
	D3(fprintf(debug_file, "port %i has too little free space (<CAMOGM_MIN_BUF_FRAMES * %d), considered BROKEN", i, state->image_size[i]));		D3(fprintf(debug_file, "port %i has too little free space (%ld <CAMOGM_MIN_BUF_FRAMES * %d), considered BROKEN, state=%d", \
			i, free_sz, state->image_size[i], state->prog_state));
	chn = -1; // i;		chn = -1; // i;
	break;		break;
	}		}
	if ((free_sz < min_sz && free_sz >= 0) \|\| min_sz == -1) {
	min_sz = free_sz;		min_sz = free_sz;
	chn = i;		chn = i;
	}		}
	@@ -2049,7 +2050,7 @@ unsigned int select_port(camogm_state *state)
	if ((state->prog_state == STATE_STARTING) \|\| (state->prog_state == STATE_RUNNING)) {		if ((state->prog_state == STATE_STARTING) \|\| (state->prog_state == STATE_RUNNING)) {
	// if (lseek(state->fd_circ[port], LSEEK_CIRC_READY, SEEK_END) < 0) {		// if (lseek(state->fd_circ[port], LSEEK_CIRC_READY, SEEK_END) < 0) {
	D3(if ((chn >=0) && (lseek(state->fd_circ[chn], LSEEK_CIRC_READY, SEEK_END) >= 0)) \		D3(if ((chn >=0) && (lseek(state->fd_circ[chn], LSEEK_CIRC_READY, SEEK_END) >= 0)) \
	fprintf(debug_file, "selected port: %i, min free size = %d @ %07d\n", chn, min_sz, get_fpga_usec(state->fd_fparmsall[0], 0)); \		fprintf(debug_file, "selected port: %i, min free size = %08ld @ %07d\n", chn, min_sz, get_fpga_usec(state->fd_fparmsall[0], 0)); \
	else if (debug_level >= 6) fprintf(debug_file,"no port is ready @ %07d\n", get_fpga_usec(state->fd_fparmsall[0], 0)));		else if (debug_level >= 6) fprintf(debug_file,"no port is ready @ %07d\n", get_fpga_usec(state->fd_fparmsall[0], 0)));
	}		}

	@@ -2139,6 +2140,8 @@ int open_files(camogm_state *state)
	clean_up(state);		clean_up(state);
	return -3;		return -3;
	}		}
			syslog (LOG_INFO, "open_files(): ccam_dma_buf[%d] = %p", port, ccam_dma_buf[port]);


	// now open/mmap file to read sensor/compressor parameters (currently - just free memory in circbuf and compressor state)		// now open/mmap file to read sensor/compressor parameters (currently - just free memory in circbuf and compressor state)
	state->fd_fparmsall[port] = open(ctlFileNames[port], O_RDWR);		state->fd_fparmsall[port] = open(ctlFileNames[port], O_RDWR);
	@@ -2340,5 +2343,7 @@ inline void wait_frame_sync(const int fd_fparsall)
	lseek(fd_fparsall, LSEEK_FRAME_WAIT_REL + 1, SEEK_END);		lseek(fd_fparsall, LSEEK_FRAME_WAIT_REL + 1, SEEK_END);
	}		}

			unsigned long *get_ccam_dma_buf(int port){
			return ccam_dma_buf[port];
			}

src/camogm.h

+72 −18

Original line number	Original line	Diff line number	Diff line
	@@ -18,6 +18,7 @@

	#ifndef _CAMOGM_H		#ifndef _CAMOGM_H
	#define _CAMOGM_H		#define _CAMOGM_H
			#define __USE_GNU // for O_DIRECT
	//#define USE_POLL		//#define USE_POLL
	#include <pthread.h>		#include <pthread.h>
	#include <stdbool.h>		#include <stdbool.h>
	@@ -27,7 +28,9 @@
	#include <elphel/c313a.h>		#include <elphel/c313a.h>
	#include <elphel/x393_devices.h>		#include <elphel/x393_devices.h>
	#include <syslog.h>		#include <syslog.h>
			#include <malloc.h> // debugging

			//#define NODEBUG
	#define CAMOGM_FRAME_NOT_READY 1 ///< frame pointer valid, but not yet acquired		#define CAMOGM_FRAME_NOT_READY 1 ///< frame pointer valid, but not yet acquired
	#define CAMOGM_FRAME_INVALID 2 ///< invalid frame pointer		#define CAMOGM_FRAME_INVALID 2 ///< invalid frame pointer
	#define CAMOGM_FRAME_CHANGED 3 ///< frame parameters have changed		#define CAMOGM_FRAME_CHANGED 3 ///< frame parameters have changed
	@@ -46,6 +49,18 @@
	#define CAMOGM_FORMAT_MOV 3 ///< output as Apple Quicktime		#define CAMOGM_FORMAT_MOV 3 ///< output as Apple Quicktime
	#define CAMOGM_MIN_BUF_FRAMES 2 ///< buffer should accomodate at list this number of frames		#define CAMOGM_MIN_BUF_FRAMES 2 ///< buffer should accomodate at list this number of frames

			#ifdef NODEBUG
			#define D(x)
			#define D0(x)
			#define D1(x)
			#define D2(x)
			#define D3(x)
			#define D4(x)
			#define D5(x)
			#define D6(x)
			#define D7(x)
			#define DD(x)
			#else
	#define D(x) { if (debug_file && debug_level) { x; fflush(debug_file); } }		#define D(x) { if (debug_file && debug_level) { x; fflush(debug_file); } }
	#define D0(x) { if (debug_file) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }		#define D0(x) { if (debug_file) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }
	#define D1(x) { if (debug_file && (debug_level > 0)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }		#define D1(x) { if (debug_file && (debug_level > 0)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }
	@@ -54,14 +69,15 @@
	#define D4(x) { if (debug_file && (debug_level > 3)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }		#define D4(x) { if (debug_file && (debug_level > 3)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }
	#define D5(x) { if (debug_file && (debug_level > 4)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }		#define D5(x) { if (debug_file && (debug_level > 4)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }
	#define D6(x) { if (debug_file && (debug_level > 5)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }		#define D6(x) { if (debug_file && (debug_level > 5)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }
			//#define D7(x) { if (debug_file && (debug_level > 6)) { pthread_mutex_lock(&print_mutex); x; fflush(debug_file); pthread_mutex_unlock(&print_mutex); } }
	//#define DD(x)		#define D7(x)
	#define DD(x) { if (debug_file) { fprintf(debug_file, "%s:%d:", __FILE__, __LINE__); x; fflush(debug_file); } }		#define DD(x) { if (debug_file) { fprintf(debug_file, "%s:%d:", __FILE__, __LINE__); x; fflush(debug_file); } }
			#endif

	/** @brief HEADER_SIZE is defined to be larger than actual header (with EXIF) to use compile-time buffer */		/** @brief HEADER_SIZE is defined to be larger than actual header (with EXIF) to use compile-time buffer */
	#define JPEG_HEADER_MAXSIZE 0x300		#define JPEG_HEADER_MAXSIZE 0x300
	/** @brief Offset from the beginning of raw device buffer. Must be aligned to physical sector size */		/** @brief Offset from the beginning of raw device buffer. Must be aligned to physical sector size */
	#define RAWDEV_START_OFFSET 1024		#define RAWDEV_START_OFFSET 1024 // ????
	/** @brief Maximum length of file or raw device path */		/** @brief Maximum length of file or raw device path */
	#define ELPHEL_PATH_MAX 300		#define ELPHEL_PATH_MAX 300
	#define MMAP_CHUNK_SIZE 10485760		#define MMAP_CHUNK_SIZE 10485760
	@@ -72,6 +88,50 @@
	/** @brief Number of chunk pages to overlap preparation with SSD raw write */		/** @brief Number of chunk pages to overlap preparation with SSD raw write */
	#define FILE_CHUNKS_PAGES 4 // 2		#define FILE_CHUNKS_PAGES 4 // 2
	#define FILE_CHUNKS_TOTAL ((FILE_CHUNKS_NUM) * (FILE_CHUNKS_PAGES))		#define FILE_CHUNKS_TOTAL ((FILE_CHUNKS_NUM) * (FILE_CHUNKS_PAGES))
			#define JPEG_MARKER_LEN 2 ///< The size in bytes of JPEG marker
			#define JPEG_TRAILER_LEN 2 ///< The size in bytes of JPEG trailer
			#define CIRCBUF_ALIGNMENT_SIZE 32 ///< Align of CIRCBUF entries


			// Switching CHUNK -> SEGMENT
			#define PAGE_PHYS 4096 // 512 // alignment size for O_DIRECT, may be different from LBA block size that is 512
			enum segments {
			SEGMENT_GLUE, ///< pointer to a page-aligned buffer to accommodate over-page of data, trailer, zeros, header and start of the data
			SEGMENT_FIRST, ///< first (or the only) continuous page-aligned data segment that does not need to be copied (may start with ofset to PAGE_PHYS-aligned)
			SEGMENT_SECOND, ///< optional second part of the data buffer, end PAGE_PHYS-aligned
			SEGMENTS_NUMBER ///< Just to get number of segment types
			};

			#define SEGMENTS_PAGES 4 // 2
			#define SEGMENTS_TOTAL ((SEGMENTS_NUMBER) * (SEGMENTS_PAGES))

			/** Glue buffer should be large enough to contain:
			* 1: alignment of the circbuf data that does not fit into PAGE_PHYS-aligned area (up to PAGE_PHYS-1)
			* 2: optional JPEG trailer (2 bytes)
			* 3: JPEG marker
			* 4: EXIF/TIFF,
			* 5: JPEG HEADER,
			* 6: portion of the circbuf data up to PAGE_PHYS alignment (up to PAGE_PHYS-1)
			* Trailer alignments (1,2) and header align,ents may share a common page (if they do not overlap)
			* Remaining gap should be zero-filled to avoid stray match of the frame start (JPEG or TIFF)
			* */
			///< Trim address/char pointer to PAGE_PHYS alignment
			/// convert to inline functions?
			#define PAGE_PHYS_TRIM(x) ((x) & -(PAGE_PHYS))
			///< Extend address/char pointer to PAGE_PHYS alignment
			#define PAGE_PHYS_CEIL(x) (((x) + (PAGE_PHYS - 1)) & -(PAGE_PHYS))
			///< Number of PAGE_PHYS pages to accommodate (x) bytes
			#define PAGE_PHYS_NUMBER(x) (((x) + (PAGE_PHYS) - 1) / (PAGE_PHYS))
			///< Number of pages needed for the glue segments
			/// 512: 12, 4096:4
			#define GLUE_SEGMENTS PAGE_PHYS_NUMBER(((PAGE_PHYS)-1) + \
			(JPEG_TRAILER_LEN) + \
			(JPEG_MARKER_LEN) + \
			(MAX_EXIF_SIZE) + \
			(JPEG_HEADER_MAXSIZE) +\
			(PAGE_PHYS - CIRCBUF_ALIGNMENT_SIZE))
			//#define COMMON_BUFF_SZ MAX_EXIF_SIZE + JPEG_HEADER_MAXSIZE + ALIGNMENT_SIZE + 2 * PHY_BLOCK_SIZE
			//#define REM_BUFF_SZ 2 * PHY_BLOCK_SIZE
	/**		/**
	* @enum state_flags		* @enum state_flags
	* @brief Program state flags		* @brief Program state flags
	@@ -126,7 +186,7 @@ typedef struct {
	uint64_t end_pos;		uint64_t end_pos;
	volatile uint64_t curr_pos_r;		volatile uint64_t curr_pos_r;
	uint64_t curr_pos_w;		uint64_t curr_pos_w;
	uint64_t mmap_default_size;		uint64_t mmap_default_size; // only used for camogm_read
	uint64_t mmap_current_size;		uint64_t mmap_current_size;
	uint64_t mmap_offset;		uint64_t mmap_offset;
	uint64_t file_start;		uint64_t file_start;
	@@ -149,27 +209,17 @@ struct writer_params {
	pthread_mutex_t writer_mutex; ///< synchronization mutex for main and writing threads		pthread_mutex_t writer_mutex; ///< synchronization mutex for main and writing threads
	pthread_cond_t writer_cond; ///< conditional variable indicating that writer thread can proceed with new frame		pthread_cond_t writer_cond; ///< conditional variable indicating that writer thread can proceed with new frame
	pthread_cond_t main_cond; ///< conditional variable indicating that main thread can update write pointers		pthread_cond_t main_cond; ///< conditional variable indicating that main thread can update write pointers
	// bool data_ready; ///< flag indicating that new frame is ready for recording, access to this flag
	// ///< must be protected with #writer_mutex. Set this flag in main thread and reset in
	// ///< disk writing thread.
	// ///< For overlapping disk raw writes with chunks preparation (should be atomic - use #writer_mutex)
	int chunk_page_prep; ///< page of chunks being prepared. Incremented (mod) after data is prepared for raw write		int chunk_page_prep; ///< page of chunks being prepared. Incremented (mod) after data is prepared for raw write
	int chunk_page_write; ///< page of chunks to write. Incremented (mod) after recording to disk		int chunk_page_write; ///< page of chunks to write. Incremented (mod) after recording to disk
	bool writev_run; ///< writev() is active (enable main thread if buffer not full and writew or buf empty)		bool writev_run; ///< writev() is active (enable main thread if buffer not full and writew or buf empty)
	int last_ret_val; ///< error value return during last frame recording (if any occurred)		int last_ret_val; ///< error value return during last frame recording (if any occurred)
	bool exit_thread; ///< flag indicating that the writing thread should terminate		bool exit_thread; ///< flag indicating that the writing thread should terminate
	int state; ///< the state of disk writing thread		int state; ///< the state of disk writing thread
	int segments; ///< the number of segments in frame		struct iovec *data_segments[SEGMENTS_PAGES]; ///< a set of vectors sets pointing to aligned frame data buffers

	struct iovec *data_chunks; ///< a set of vectors pointing to aligned frame data buffers
	struct iovec was_CHUNK_REM; ///< extracting to a separate entity data_chunks[CHUNK_REM]
	// struct iovec *was_CHUNK_COMMON; ///< extracting to a separate entity data_chunks[CHUNK_COMMON]
	struct iovec prev_rem_vect; ///< vector pointing to the remainder of the previous frame
	unsigned char *rem_buff; ///< buffer containing the unaligned remainder of the current frame
	unsigned char *prev_rem_buff; ///< buffer containing the unaligned remainder of the previous frame
	// get rid of common_buff
	// unsigned char *common_buff; ///< buffer for aligned JPEG header // make multiple?
	unsigned char *common_buffs[FILE_CHUNKS_PAGES]; ///< buffer for aligned JPEG header // make multiple?		unsigned char *common_buffs[FILE_CHUNKS_PAGES]; ///< buffer for aligned JPEG header // make multiple?
			unsigned char *glue_buffs[SEGMENTS_PAGES + 1]; ///< glue buffer (end of previous frame + start of this one
			// unsigned char *glue_buffs_carry; ///< extra glue buffer to pass from the previous to the next frame
			struct iovec glue_carry_vec; ///< current tail pointer of the carry glue segment
	uint64_t lba_start; ///< disk starting LBA		uint64_t lba_start; ///< disk starting LBA
	uint64_t lba_current; ///< current write position in LBAs		uint64_t lba_current; ///< current write position in LBAs
	uint64_t lba_end; ///< disk last LBA		uint64_t lba_end; ///< disk last LBA
	@@ -241,6 +291,8 @@ typedef struct {
	int set_format; ///< output format to set (will be updated after stop)		int set_format; ///< output format to set (will be updated after stop)
	elph_packet_chunk packetchunks[FILE_CHUNKS_NUM];		elph_packet_chunk packetchunks[FILE_CHUNKS_NUM];
	int chunk_index;		int chunk_index;
			int chunk_data_index; ///< segment index corresponding to first(only) data one
			int data_segments; ///< the number of segments in frame
	int buf_overruns[SENSOR_PORTS];		int buf_overruns[SENSOR_PORTS];
	int buf_min[SENSOR_PORTS];		int buf_min[SENSOR_PORTS];
	int set_frames_skip; ///< will be copied to frames_skip if stopped or at start		int set_frames_skip; ///< will be copied to frames_skip if stopped or at start
	@@ -287,5 +339,7 @@ int isDaemonEnabled(unsigned int port, int daemonBit);
	int is_fd_valid(int fd);		int is_fd_valid(int fd);
	int get_fpga_usec(const int fd_fparsall, unsigned int port);		int get_fpga_usec(const int fd_fparsall, unsigned int port);
	inline void wait_frame_sync(const int fd_fparsall);		inline void wait_frame_sync(const int fd_fparsall);
			unsigned long *get_ccam_dma_buf(int port);


	#endif /* _CAMOGM_H */		#endif /* _CAMOGM_H */

Admin message