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#define _IPECAMERA_IMAGE_C
#define _BSD_SOURCE
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/time.h>
#include <pthread.h>
#include <assert.h>
#include <ufodecode.h>
#include "../tools.h"
#include "../error.h"
#include "pcilib.h"
#include "private.h"
#include "reader.h"
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->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, PCILIB_DMA_TIMEOUT)) {
ctx->run_reader = 0;
return 1;
}
return 0;
}
static uint32_t frame_magic[6] = { 0x51111111, 0x52222222, 0x53333333, 0x54444444, 0x55555555, 0x56666666 };
static int ipecamera_data_callback(void *user, pcilib_dma_flags_t flags, size_t bufsize, void *buf) {
int res;
int eof = 0;
#ifdef IPECAMERA_BUG_MULTIFRAME_PACKETS
size_t extra_data = 0;
#endif /* IPECAMERA_BUG_MULTIFRAME_PACKETS */
ipecamera_t *ctx = (ipecamera_t*)user;
if (!ctx->cur_size) {
#if defined(IPECAMERA_BUG_INCOMPLETE_PACKETS)||defined(IPECAMERA_BUG_MULTIFRAME_PACKETS)
size_t startpos;
for (startpos = 0; (startpos + 8) < bufsize; startpos++) {
if (!memcmp(buf + startpos, frame_magic, sizeof(frame_magic))) break;
}
if (startpos) {
buf += startpos;
bufsize -= startpos;
}
#endif /* IPECAMERA_BUG_INCOMPLETE_PACKETS */
if ((bufsize >= 8)&&(!memcmp(buf, frame_magic, sizeof(frame_magic)))) {
/*
// Not implemented in hardware yet
ctx->frame[ctx->buffer_pos].event.info.seqnum = ((uint32_t*)buf)[6] & 0xF0000000;
ctx->frame[ctx->buffer_pos].event.info.offset = ((uint32_t*)buf)[7] & 0xF0000000;
*/
ctx->frame[ctx->buffer_pos].event.info.seqnum = ctx->event_id + 1;
gettimeofday(&ctx->frame[ctx->buffer_pos].event.info.timestamp, NULL);
} else {
// pcilib_warning("Frame magic is not found, ignoring broken data...");
return PCILIB_STREAMING_CONTINUE;
}
}
#ifdef IPECAMERA_BUG_MULTIFRAME_PACKETS
if (ctx->cur_size + bufsize > ctx->raw_size) {
size_t need;
for (need = ctx->raw_size - ctx->cur_size; need < bufsize; need += sizeof(uint32_t)) {
if (*(uint32_t*)(buf + need) == frame_magic[0]) break;
}
if (need < bufsize) {
extra_data = bufsize - need;
//bufsize = need;
eof = 1;
}
// just rip of padding
bufsize = ctx->raw_size - ctx->cur_size;
}
#endif /* IPECAMERA_BUG_MULTIFRAME_PACKETS */
if (ctx->parse_data) {
if (ctx->cur_size + bufsize > ctx->full_size) {
pcilib_error("Unexpected event data, we are expecting at maximum (%zu) bytes, but (%zu) already read", ctx->full_size, ctx->cur_size + bufsize);
return -PCILIB_ERROR_TOOBIG;
}
memcpy(ctx->buffer + ctx->buffer_pos * ctx->padded_size + ctx->cur_size, buf, bufsize);
}
ctx->cur_size += bufsize;
// printf("%i: %i %i\n", ctx->buffer_pos, ctx->cur_size, bufsize);
if (ctx->cur_size >= ctx->full_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 + bufsize);
}
#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, PCILIB_DMA_TIMEOUT, &ipecamera_data_callback, user);
if (err) {
if (err == PCILIB_ERROR_TIMEOUT) {
if (ctx->cur_size > ctx->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, PCILIB_DMA_TIMEOUT)) {
ctx->run_reader = 0;
break;
}
usleep(IPECAMERA_NOFRAME_SLEEP);
} else pcilib_error("DMA error while reading IPECamera frames, error: %i", err);
} //else printf("no error\n");
//usleep(1000);
}
ctx->run_streamer = 0;
if (ctx->cur_size)
pcilib_error("partialy read frame after stop signal, %zu bytes in the buffer", ctx->cur_size);
return NULL;
}
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