Rename to `ufodecode`

1 files changed, 0 insertions, 333 deletions

diff --git a/src/libipe.c b/src/libipe.c
deleted file mode 100644
index 466056a..0000000
--- a/src/libipe.c
+++ /dev/null
@@ -1,333 +0,0 @@
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include "libipe.h"
-#include "libipe-private.h"
-#include "config.h"
-#include <xmmintrin.h>
-
-#define IPECAMERA_NUM_CHANNELS 16
-#define IPECAMERA_PIXELS_PER_CHANNEL 128
-#define IPECAMERA_WIDTH (IPECAMERA_NUM_CHANNELS * IPECAMERA_PIXELS_PER_CHANNEL)
-
-
-#define CHECK_VALUE(value, expected) \
-    if (value != expected) { \
-        fprintf(stderr, "<%s:%i> 0x%x != 0x%x\n", __FILE__, __LINE__, value, expected); \
-        err = 1; \
-    }
-
-#define CHECK_FLAG(flag, check, ...) \
-    if (!(check)) { \
-        fprintf(stderr, "<%s:%i> Unexpected value 0x%x of " flag "\n", __FILE__, __LINE__,  __VA_ARGS__); \
-        err = 1; \
-    }
-
-
-/**
- * \brief Setup a new decoder instance
- *
- * \param height Number of rows that are expected in the data stream
- * \param raw The data stream from the camera or NULL if set later with
- * ipe_decoder_set_raw_data.
- * \param num_bytes Size of the data stream buffer in bytes
- *
- * \return A new decoder instance that can be used to iterate over the frames
- * using ipe_decoder_get_next_frame.
- */
-ipe_decoder ipe_decoder_new(uint32_t height, uint32_t *raw, size_t num_bytes)
-{
-    ipe_decoder decoder = malloc(sizeof(struct ipe_decoder_t));
-    if (decoder == NULL)
-        return NULL;
-
-    decoder->height = height;
-    ipe_decoder_set_raw_data(decoder, raw, num_bytes);
-    return decoder;
-}
-
-
-/**
- * \brief Release decoder instance
- *
- * \param decoder An ipe_decoder instance
- */
-void ipe_decoder_free(ipe_decoder decoder)
-{
-    free(decoder);
-}
-
-
-/**
- * \brief Set raw data stream
- *
- * \param decoder An ipe_decoder instance
- * \param raw Raw data stream
- * \param num_bytes Size of data stream buffer in bytes
- */
-void ipe_decoder_set_raw_data(ipe_decoder decoder, uint32_t *raw, size_t num_bytes)
-{
-    decoder->raw = raw;
-    decoder->num_bytes = num_bytes;
-    decoder->current_pos = 0;
-}
-
-static int ipe_decode_frame(uint16_t *pixel_buffer, uint32_t *raw, int num_rows, int *offset)
-{
-    static int channel_order[IPECAMERA_NUM_CHANNELS] = { 15, 13, 14, 12, 10, 8, 11, 7, 9, 6, 5, 2, 4, 3, 0, 1 };
-
-    int info;
-    int row = 0;
-    int channel = 0;
-    int pos = 0;
-    uint32_t data;
-    const int bytes = 43;
-
-#ifdef HAVE_SSE
-    const uint32_t mask = 0x3FF;
-    __m128i mmask = _mm_set_epi32(mask, mask, mask, mask);
-    __m128i packed;
-    __m128i tmp1, tmp2;
-    uint32_t result[4] __attribute__ ((aligned (16))) = {0};
-#endif
-
-    do {
-        info = raw[0];
-        row = (info >> 4) & 0x7FF;
-        int pixels = (info >> 20) & 0xFF;
-
-        channel = channel_order[info & 0x0F];
-        int base = row * IPECAMERA_WIDTH + channel * IPECAMERA_PIXELS_PER_CHANNEL;
-
-#ifdef DEBUG
-        int err = 0;
-        int header = (info >> 30) & 0x03;   // 2 bits
-        const int bpp = (info >> 16) & 0x0F;      // 4 bits
-        CHECK_FLAG("raw header magick", header == 2, header);
-        CHECK_FLAG("pixel size, only 10 bits are supported", bpp == 10, bpp);
-        CHECK_FLAG("channel, limited by %i output channels", channel < IPECAMERA_NUM_CHANNELS, channel, IPECAMERA_NUM_CHANNELS);
-#endif
-
-        /* "Correct" missing pixel */
-        if ((row < 2) && (pixels == (IPECAMERA_PIXELS_PER_CHANNEL - 1))) {
-            pixel_buffer[base] = 0;
-            /* base++; */
-        }
-#ifdef DEBUG
-        else 
-            CHECK_FLAG("number of pixels, %i is expected", pixels == IPECAMERA_PIXELS_PER_CHANNEL, pixels, IPECAMERA_PIXELS_PER_CHANNEL);
-#endif
-
-#ifdef HAVE_SSE
-        for (int i = 1 ; i < bytes-4; i += 4, base += 12) {
-            packed = _mm_set_epi32(raw[i], raw[i+1], raw[i+2], raw[i+3]);
-
-            tmp1 = _mm_srli_epi32(packed, 20);
-            tmp2 = _mm_and_si128(tmp1, mmask);
-            _mm_storeu_si128((__m128i*) result, tmp2);
-            pixel_buffer[base] = result[0];
-            pixel_buffer[base+3] = result[1];
-            pixel_buffer[base+6] = result[2];
-            pixel_buffer[base+9] = result[3];
-
-            tmp1 = _mm_srli_epi32(packed, 10);
-            tmp2 = _mm_and_si128(tmp1, mmask);
-            _mm_storeu_si128((__m128i*) result, tmp2);
-            pixel_buffer[base+1] = result[0];
-            pixel_buffer[base+4] = result[1];
-            pixel_buffer[base+7] = result[2];
-            pixel_buffer[base+10] = result[3];
-
-            tmp1 = _mm_and_si128(packed, mmask);
-            _mm_storeu_si128((__m128i*) result, tmp1);
-            pixel_buffer[base+2] = result[0];
-            pixel_buffer[base+5] = result[1];
-            pixel_buffer[base+8] = result[2];
-            pixel_buffer[base+11] = result[3];
-        }
-        
-        /* Compute last pixels the usual way */
-        for (int i = bytes-4; i < bytes; i++) {
-            data = raw[i];
-            pixel_buffer[base++] = (data >> 20) & 0x3FF;
-            pixel_buffer[base++] = (data >> 10) & 0x3FF;
-            pixel_buffer[base++] = data & 0x3FF;
-        }
-#else
-        for (int i = 1 ; i < bytes; i++) {
-            data = raw[i];
-#ifdef DEBUG
-            header = (data >> 30) & 0x03;   
-            CHECK_FLAG("raw data magick", header == 3, header);
-            if (err) 
-                return err;
-#endif
-            pixel_buffer[base++] = (data >> 20) & 0x3FF;
-            pixel_buffer[base++] = (data >> 10) & 0x3FF;
-            pixel_buffer[base++] = data & 0x3FF;
-        }
-#endif
-
-        data = raw[bytes];
-#ifdef DEBUG
-        header = (data >> 30) & 0x03;
-        CHECK_FLAG("raw data magick", header == 3, header);
-        CHECK_FLAG("raw footer magick", (data & 0x3FF) == 0x55, (data & 0x3FF));
-        if (err) 
-            return err;
-#endif
-
-        int ppw = pixels >> 6;
-        for (int j = 0; j < ppw; j++)
-            pixel_buffer[base++] = (data >> (10 * (ppw - j))) & 0x3FF;
-
-        pos += bytes + 1;
-        raw += bytes + 1;
-    } while ((row < (num_rows - 1)) || (channel != 1));
-
-    *offset = pos;
-    return 0;
-}
-
-
-/**
- * \brief Deinterlace by interpolating between two rows
- *
- * \param in Input frame
- * \param out Destination of interpolated frame
- * \param width Width of frame in pixels
- * \param heigh Height of frame in pixels
- */
-void ipe_deinterlace_interpolate(const uint16_t *in, uint16_t *out, int width, int height)
-{
-    const size_t row_size_bytes = width * sizeof(uint16_t);
-
-    for (int row = 0; row < height; row++) {
-        /* Copy one line */
-        memcpy(out, in + row*width, row_size_bytes);
-        out += width;
-
-        /* Interpolate between source row and row+1 */ 
-        for (int x = 0; x < width; x++) {
-            out[x] = (int) (0.5 * in[row*width + x] + 0.5 * in[(row+1)*width + x]);
-        }
-        out += width;
-    }
-
-    /* Copy last row */
-    memcpy(out, in + width * (height - 1), row_size_bytes);
-}
-
-
-/**
- * \brief Deinterlace by "weaving" the rows of two frames
- *
- * \param in1 First frame
- * \param in2 Second frame
- * \param out Destination of weaved frame
- * \param width Width of frame in pixels
- * \param heigh Height of frame in pixels
- */
-void ipe_deinterlace_weave(const uint16_t *in1, const uint16_t *in2, uint16_t *out, int width, int height)
-{
-    const size_t row_size_bytes = width * sizeof(uint16_t);
-    for (int row = 0; row < height; row++) {
-        memcpy(out, in1 + row*width, row_size_bytes); 
-        out += width;
-        memcpy(out, in2 + row*width, row_size_bytes); 
-        out += width;
-    }
-}
-
-
-/**
- * \brief Iterate and decode next frame
- *
- * This function tries to decode the next frame in the currently set raw data
- * stream. 
- *
- * \param decoder An ipe_decoder instance
- * \param pixels If pointer with NULL content is passed, a new buffer is
- * allocated otherwise, this user-supplied buffer is used.
- * \param frame_number Frame number as reported in the header
- * \param time_stamp Time stamp of the frame as reported in the header
- *
- * \return 0 in case of no error, ENOSR if end of stream was reached, ENOMEM if
- * NULL was passed but no memory could be allocated, EILSEQ if data stream is
- * corrupt and EFAULT if pixels is a NULL-pointer.
- */
-int ipe_decoder_get_next_frame(ipe_decoder decoder, uint16_t **pixels, uint32_t *frame_number, uint32_t *time_stamp)
-{
-
-    uint32_t *raw = decoder->raw;
-    int err = 0;
-    int pos = decoder->current_pos;
-    int advance;
-    const int num_words = decoder->num_bytes / 4;
-
-    if (pixels == NULL)
-        return EFAULT;
-
-    if (pos >= num_words)
-        return ENOSR; 
-
-    if (num_words < 16)
-        return EILSEQ;
-
-    if (*pixels == NULL) {
-        *pixels = (uint16_t *) malloc(IPECAMERA_WIDTH * decoder->height * sizeof(uint16_t));
-        if (*pixels == NULL)
-            return ENOMEM;
-    }
-
-#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);
-    CHECK_VALUE(raw[pos++], 0x56666666);
-    CHECK_VALUE(raw[pos] >> 28, 0x5);
-    *frame_number = raw[pos++] & 0xF0000000;
-    CHECK_VALUE(raw[pos] >> 28, 0x5);
-    *time_stamp = raw[pos++] & 0xF0000000;
-    if (err)
-        return EILSEQ;
-#else
-    *frame_number = raw[pos + 6] & 0xF0000000;
-    *time_stamp = raw[pos + 7] & 0xF0000000;
-    pos += 8;
-#endif
-
-    err = ipe_decode_frame(*pixels, raw + pos, decoder->height, &advance);
-    if (err)
-        return EILSEQ;
-
-    pos += advance;
-
-#ifdef DEBUG
-    CHECK_VALUE(raw[pos++], 0x0AAAAAAA);
-    CHECK_VALUE(raw[pos++], 0x0BBBBBBB);
-    CHECK_VALUE(raw[pos++], 0x0CCCCCCC);
-    CHECK_VALUE(raw[pos++], 0x0DDDDDDD);
-    CHECK_VALUE(raw[pos++], 0x0EEEEEEE);
-    CHECK_VALUE(raw[pos++], 0x0FFFFFFF);
-    CHECK_VALUE(raw[pos++], 0x00000000);
-    CHECK_VALUE(raw[pos++], 0x01111111);
-#else
-    pos += 8;
-#endif
-
-    /* if bytes left and we see fill bytes, skip them */
-    if ((raw[pos] == 0x0) && (raw[pos+1] == 0x1111111)) {
-        pos += 2;
-        while ((pos < num_words) && ((raw[pos] == 0x89abcdef) || (raw[pos] == 0x1234567)))
-            pos++;
-    }
-
-    decoder->current_pos = pos;
-    return 0;
-}
-