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#define _BSD_SOURCE
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pthread.h>
#include <assert.h>
#include <ufodecode.h>
#include <pcilib.h>
#include <pcilib/tools.h>
#include <pcilib/error.h>
#include "model.h"
#include "private.h"
#include "reader.h"
int ipecamera_compute_buffer_size(ipecamera_t *ctx, size_t lines) {
const size_t header_size = 8 * sizeof(ipecamera_payload_t);
const size_t footer_size = 8 * sizeof(ipecamera_payload_t);
size_t line_size, raw_size, padded_blocks;
switch (ctx->firmware) {
default:
line_size = (1 + IPECAMERA_PIXELS_PER_CHANNEL) * 32;
raw_size = lines * line_size;
raw_size *= 16 / ctx->cmosis_outputs;
raw_size += header_size + footer_size;
#ifdef IPECAMERA_BUG_MISSING_PAYLOAD
// As I understand, the first 32-byte packet is missing, so we need to substract 32
raw_size -= 32;
#endif /* IPECAMERA_BUG_MISSING_PAYLOAD */
}
padded_blocks = raw_size / IPECAMERA_DMA_PACKET_LENGTH + ((raw_size % IPECAMERA_DMA_PACKET_LENGTH)?1:0);
ctx->roi_raw_size = raw_size;
ctx->roi_padded_size = padded_blocks * IPECAMERA_DMA_PACKET_LENGTH;
// printf("%lu %lu\n", ctx->roi_raw_size, ctx->roi_padded_size);
return 0;
}
static inline int ipecamera_new_frame(ipecamera_t *ctx) {
ctx->frame[ctx->buffer_pos].event.raw_size = ctx->cur_size;
if (ctx->cur_size < ctx->roi_raw_size) {
ctx->frame[ctx->buffer_pos].event.info.flags |= PCILIB_EVENT_INFO_FLAG_BROKEN;
}
ctx->buffer_pos = (++ctx->event_id) % ctx->buffer_size;
ctx->cur_size = 0;
ctx->frame[ctx->buffer_pos].event.info.type = PCILIB_EVENT0;
ctx->frame[ctx->buffer_pos].event.info.flags = 0;
ctx->frame[ctx->buffer_pos].event.image_ready = 0;
if ((ctx->event_id == ctx->autostop.evid)&&(ctx->event_id)) {
ctx->run_reader = 0;
return 1;
}
if (pcilib_check_deadline(&ctx->autostop.timestamp, 0)) {
ctx->run_reader = 0;
return 1;
}
return 0;
}
static uint32_t frame_magic[4] = { 0x51111111, 0x52222222, 0x53333333, 0x54444444 };
static int ipecamera_data_callback(void *user, pcilib_dma_flags_t flags, size_t bufsize, void *buf) {
int res;
int eof = 0;
static unsigned long packet_id = 0;
#ifdef IPECAMERA_BUG_MULTIFRAME_PACKETS
size_t real_size;
size_t extra_data = 0;
#endif /* IPECAMERA_BUG_MULTIFRAME_PACKETS */
ipecamera_t *ctx = (ipecamera_t*)user;
#if defined(IPECAMERA_BUG_INCOMPLETE_PACKETS)||defined(IPECAMERA_BUG_MULTIFRAME_PACKETS)
static pcilib_event_id_t invalid_frame_id = (pcilib_event_id_t)-1;
#endif
packet_id++;
ipecamera_debug_buffer(RAW_PACKETS, bufsize, buf, PCILIB_DEBUG_BUFFER_MKDIR, "frame%4lu/frame%9lu", ctx->event_id, packet_id);
if (!ctx->cur_size) {
#if defined(IPECAMERA_BUG_INCOMPLETE_PACKETS)||defined(IPECAMERA_BUG_MULTIFRAME_PACKETS)
size_t startpos;
for (startpos = 0; (startpos + sizeof(frame_magic)) <= bufsize; startpos += sizeof(uint32_t)) {
if (!memcmp(buf + startpos, frame_magic, sizeof(frame_magic))) break;
}
if ((startpos + sizeof(frame_magic)) > bufsize) {
ipecamera_debug_buffer(RAW_PACKETS, bufsize, NULL, 0, "frame%4lu/frame%9lu.invalid", ctx->event_id, packet_id);
if (invalid_frame_id != ctx->event_id) {
ipecamera_debug(HARDWARE, "No frame magic in DMA packet of %u bytes, current event %lu", bufsize, ctx->event_id);
invalid_frame_id = ctx->event_id;
}
return PCILIB_STREAMING_CONTINUE;
}
if (startpos) {
// pass padding to rawdata callback
if (ctx->event.params.rawdata.callback) {
res = ctx->event.params.rawdata.callback(0, NULL, PCILIB_EVENT_FLAG_RAW_DATA_ONLY, startpos, buf, ctx->event.params.rawdata.user);
if (res <= 0) {
if (res < 0) return res;
ctx->run_reader = 0;
}
}
buf += startpos;
bufsize -= startpos;
}
#endif /* IPECAMERA_BUG_INCOMPLETE_PACKETS */
if ((bufsize >= 8)&&(!memcmp(buf, frame_magic, sizeof(frame_magic)))) {
// size_t first_line = ((uint32_t*)buf)[4] & 0x7FF;
size_t n_lines = ((uint32_t*)buf)[5] & 0x7FF;
ipecamera_compute_buffer_size(ctx, n_lines);
ctx->frame[ctx->buffer_pos].event.info.seqnum = ((uint32_t*)buf)[6] & 0xFFFFFF;
ctx->frame[ctx->buffer_pos].event.info.offset = (((uint32_t*)buf)[7] & 0xFFFFFF) * 80;
gettimeofday(&ctx->frame[ctx->buffer_pos].event.info.timestamp, NULL);
} else {
ipecamera_debug(HARDWARE, "Frame magic is not found, ignoring broken data...");
return PCILIB_STREAMING_CONTINUE;
}
}
#ifdef IPECAMERA_BUG_MULTIFRAME_PACKETS
// for rawdata_callback with complete padding
real_size = bufsize;
if (ctx->cur_size + bufsize > ctx->roi_raw_size) {
size_t need;
for (need = ctx->roi_raw_size - ctx->cur_size; (need + sizeof(frame_magic)) < bufsize; need += sizeof(uint32_t)) {
if (!memcmp(buf + need, frame_magic, sizeof(frame_magic))) break;
}
if ((need + sizeof(frame_magic)) < bufsize) {
extra_data = bufsize - need;
eof = 1;
}
// just rip of padding
bufsize = ctx->roi_raw_size - ctx->cur_size;
ipecamera_debug_buffer(RAW_PACKETS, bufsize, buf, 0, "frame%4lu/frame%9lu.partial", ctx->event_id, packet_id);
}
#endif /* IPECAMERA_BUG_MULTIFRAME_PACKETS */
if (ctx->parse_data) {
if (ctx->cur_size + bufsize > ctx->padded_size) {
pcilib_error("Unexpected event data, we are expecting at maximum (%zu) bytes, but (%zu) already read", ctx->padded_size, ctx->cur_size + bufsize);
return -PCILIB_ERROR_TOOBIG;
}
if (bufsize)
memcpy(ctx->buffer + ctx->buffer_pos * ctx->padded_size + ctx->cur_size, buf, bufsize);
}
ctx->cur_size += bufsize;
if (ctx->cur_size >= ctx->roi_raw_size) {
eof = 1;
}
if (ctx->event.params.rawdata.callback) {
res = ctx->event.params.rawdata.callback(ctx->event_id, (pcilib_event_info_t*)(ctx->frame + ctx->buffer_pos), (eof?PCILIB_EVENT_FLAG_EOF:PCILIB_EVENT_FLAGS_DEFAULT), bufsize, buf, ctx->event.params.rawdata.user);
if (res <= 0) {
if (res < 0) return res;
ctx->run_reader = 0;
}
}
if (eof) {
if ((ipecamera_new_frame(ctx))||(!ctx->run_reader)) {
return PCILIB_STREAMING_STOP;
}
#ifdef IPECAMERA_BUG_MULTIFRAME_PACKETS
if (extra_data) {
return ipecamera_data_callback(user, flags, extra_data, buf + (real_size - extra_data));
}
#endif /* IPECAMERA_BUG_MULTIFRAME_PACKETS */
}
return PCILIB_STREAMING_REQ_FRAGMENT;
}
void *ipecamera_reader_thread(void *user) {
int err;
ipecamera_t *ctx = (ipecamera_t*)user;
while (ctx->run_reader) {
err = pcilib_stream_dma(ctx->event.pcilib, ctx->rdma, 0, 0, PCILIB_DMA_FLAG_MULTIPACKET, IPECAMERA_DMA_TIMEOUT, &ipecamera_data_callback, user);
if (err) {
if (err == PCILIB_ERROR_TIMEOUT) {
if (ctx->cur_size >= ctx->roi_raw_size) ipecamera_new_frame(ctx);
#ifdef IPECAMERA_BUG_INCOMPLETE_PACKETS
else if (ctx->cur_size > 0) ipecamera_new_frame(ctx);
#endif /* IPECAMERA_BUG_INCOMPLETE_PACKETS */
if (pcilib_check_deadline(&ctx->autostop.timestamp, 0)) {
ctx->run_reader = 0;
break;
}
usleep(IPECAMERA_NOFRAME_SLEEP);
} else pcilib_error("DMA error while reading IPECamera frames, error: %i", err);
}
}
ctx->run_streamer = 0;
if (ctx->cur_size)
pcilib_info("partialy read frame after stop signal, %zu bytes in the buffer", ctx->cur_size);
return NULL;
}
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