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-rw-r--r--src/ufodecode.c124
1 files changed, 58 insertions, 66 deletions
diff --git a/src/ufodecode.c b/src/ufodecode.c
index aecb554..a95e3cc 100644
--- a/src/ufodecode.c
+++ b/src/ufodecode.c
@@ -10,8 +10,6 @@
#include <xmmintrin.h>
#endif
-#define CHECKS
-
#define IPECAMERA_NUM_ROWS 1088
#define IPECAMERA_NUM_CHANNELS 16 /**< Number of channels per row */
#define IPECAMERA_PIXELS_PER_CHANNEL 128 /**< Number of pixels per channel */
@@ -32,6 +30,25 @@ typedef struct {
} pre_header_t;
typedef struct {
+ uint32_t magic_2;
+ uint32_t magic_3;
+ uint32_t magic_4;
+ uint32_t magic_5;
+ unsigned n_rows : 11;
+ unsigned n_skipped_rows : 7;
+ unsigned cmosis_start_address : 10;
+ unsigned five_1 : 4;
+ unsigned frame_number : 24;
+ unsigned dataformat_version : 4;
+ unsigned five_2 : 4;
+ unsigned timestamp : 24;
+ unsigned zero_1 : 2;
+ unsigned output_mode : 2;
+ unsigned zero_2 : 2;
+ unsigned adc_resolution : 2;
+} header_v5_t;
+
+typedef struct {
unsigned int pixel_number : 8;
unsigned int row_number : 12;
unsigned int pixel_size : 4;
@@ -261,95 +278,70 @@ ufo_deinterlace_weave (const uint16_t *in1, const uint16_t *in2, uint16_t *out,
* \return number of decoded bytes or 0 in case of error
*/
size_t
-ufo_decoder_decode_frame(UfoDecoder *decoder, uint32_t *raw, size_t num_bytes, uint16_t *pixels, UfoDecoderMeta *meta)
+ufo_decoder_decode_frame (UfoDecoder *decoder, uint32_t *raw, size_t num_bytes, uint16_t *pixels, UfoDecoderMeta *meta)
{
int err = 0;
size_t pos = 0;
size_t advance = 0;
const size_t num_words = num_bytes / 4;
+ size_t rows_per_frame = decoder->height;
const pre_header_t *pre_header;
+ const header_v5_t *v5_header;
if ((pixels == NULL) || (num_words < 16))
return 0;
pre_header = (pre_header_t *) raw;
- CHECK_VALUE(pre_header->five, 0x5);
- CHECK_VALUE(pre_header->ones, 0x111111);
+ CHECK_VALUE (pre_header->five, 0x5);
+ CHECK_VALUE (pre_header->ones, 0x111111);
- size_t rows_per_frame = decoder->height;
const int version = pre_header->version + 5; /* it starts with 0 */
-#ifdef DEBUG
- CHECK_VALUE(raw[pos++], 0x51111111);
- CHECK_VALUE(raw[pos++], 0x52222222);
- CHECK_VALUE(raw[pos++], 0x53333333);
- CHECK_VALUE(raw[pos++], 0x54444444);
- CHECK_VALUE(raw[pos++], 0x55555555);
-
- switch (version) {
- case 5:
- CHECK_VALUE(raw[pos] >> 28, 0x5);
- meta->cmosis_start_address = (raw[pos] >> 21) & 0x1FF;
- meta->n_skipped_rows = (raw[pos] >> 15) & 0x3F;
- meta->n_rows = rows_per_frame = raw[pos] & 0x7FF;
- pos++;
+ v5_header = (header_v5_t *) &raw[pos + 1];
- meta->frame_number = raw[pos++] & 0x1FFFFFF;
- CHECK_VALUE(raw[pos] >> 28, 0x5);
- meta->time_stamp = raw[pos] & 0xFFFFFF;
- meta->output_mode = (raw[pos] >> 24) & 0x3;
- meta->adc_resolution = (raw[pos] >> 26) & 0x3;
- pos++;
+ CHECK_VALUE (v5_header->magic_2, 0x52222222);
+ CHECK_VALUE (v5_header->magic_3, 0x53333333);
+ CHECK_VALUE (v5_header->magic_4, 0x54444444);
+ CHECK_VALUE (v5_header->magic_5, 0x55555555);
- if ((meta->output_mode != IPECAMERA_MODE_4_CHAN_IO) && (meta->output_mode != IPECAMERA_MODE_16_CHAN_IO)) {
- fprintf(stderr, "Output mode 0x%x is not supported\n", meta->output_mode);
- return EILSEQ;
- }
- break;
+ CHECK_VALUE (v5_header->five_1, 0x5);
+ CHECK_VALUE (v5_header->five_2, 0x5);
- default:
- fprintf(stderr, "Unsupported data format version %i detected\n", version);
- return 0;
+ meta->time_stamp = v5_header->timestamp;
+ meta->cmosis_start_address = v5_header->cmosis_start_address;
+ meta->frame_number = v5_header->frame_number;
+ meta->n_rows = v5_header->n_rows;
+ meta->n_skipped_rows = v5_header->n_skipped_rows;
+
+#ifdef DEBUG
+ if ((meta->output_mode != IPECAMERA_MODE_4_CHAN_IO) && (meta->output_mode != IPECAMERA_MODE_16_CHAN_IO)) {
+ fprintf (stderr, "Output mode 0x%x is not supported\n", meta->output_mode);
+ return EILSEQ;
}
if (err) {
- fprintf(stderr, "Corrupt data:");
+ fprintf (stderr, "Corrupt data:");
for (int i = 0; i < pos; i++) {
if ((i % 8) == 0)
- fprintf(stderr, "\n");
+ fprintf (stderr, "\n");
- fprintf(stderr, " %#08x", raw[i]);
+ fprintf (stderr, " %#08x", raw[i]);
}
- fprintf(stderr, "\n");
+ fprintf (stderr, "\n");
return 0;
}
-#else
- switch (version) {
- case 5:
- meta->n_rows = rows_per_frame = raw[pos + 5] & 0x7FF;
- meta->frame_number = raw[pos + 6] & 0x1FFFFFF;
- meta->time_stamp = raw[pos + 7] & 0xFFFFFF;
- meta->output_mode = (raw[pos + 7] >> 24) & 0x3;
- meta->adc_resolution = (raw[pos + 7] >> 26) & 0x3;
-
- break;
- default:
- fprintf(stderr, "Unsupported data format detected\n");
- return 0;
- }
+#endif
pos += 8;
-#endif
- switch (version) {
- case 5:
- err = ufo_decode_frame_channels_v5 (decoder, pixels, raw + pos, rows_per_frame, &advance, meta->output_mode);
- break;
- default:
- break;
+ if (version == 5) {
+ err = ufo_decode_frame_channels_v5 (decoder, pixels, raw + pos, rows_per_frame, &advance, meta->output_mode);
+ }
+ else {
+ fprintf (stderr, "Data format version %i unsupported\n", version);
}
if (err)
@@ -357,22 +349,22 @@ ufo_decoder_decode_frame(UfoDecoder *decoder, uint32_t *raw, size_t num_bytes, u
pos += advance;
-#ifdef CHECKS
- CHECK_VALUE(raw[pos++], 0x0AAAAAAA);
+ CHECK_VALUE(raw[pos], 0x0AAAAAAA);
+ pos++;
meta->status1.bits = raw[pos++];
meta->status2.bits = raw[pos++];
meta->status3.bits = raw[pos++];
+ pos += 2;
+
+ CHECK_VALUE(raw[pos], 0x00000000);
pos++;
+
+ CHECK_VALUE(raw[pos], 0x01111111);
pos++;
- CHECK_VALUE(raw[pos++], 0x00000000);
- CHECK_VALUE(raw[pos++], 0x01111111);
if (err)
return 0;
-#else
- pos += 8;
-#endif
return pos;
}
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