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decode compressed xtrans files

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This commit is contained in:
heckflosse
2017-02-11 17:48:59 +01:00
parent 242b7a86cf
commit d5d8747e5a
4 changed files with 851 additions and 0 deletions
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62
rtengine/dcraw.h
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@@ -89,8 +89,51 @@ protected:
unsigned black, cblack[4102], maximum, mix_green, raw_color, zero_is_bad;
unsigned zero_after_ff, is_raw, dng_version, is_foveon, data_error;
unsigned tile_width, tile_length, gpsdata[32], load_flags;
bool xtransCompressed = false;
struct xtrans_params
{
char *q_table; /* quantization table */
int q_point[5]; /* quantization points */
int max_bits;
int min_value;
int raw_bits;
int total_values;
int maxDiff;
ushort line_width;
};
struct int_pair {
int value1;
int value2;
};
enum _xt_lines
{
_R0=0,_R1,_R2,_R3,_R4,
_G0,_G1,_G2,_G3,_G4,_G5,_G6,_G7,
_B0,_B1,_B2,_B3,_B4,
_ltotal
};
struct xtrans_block {
int cur_bit; // current bit being read (from left to right)
int cur_pos; // current position in a buffer
INT64 cur_buf_offset; // offset of this buffer in a file
unsigned max_read_size; // Amount of data to be read
int cur_buf_size; // buffer size
uchar *cur_buf; // currently read block
IMFILE *input;
struct int_pair grad_even[3][41]; // tables of gradients
struct int_pair grad_odd[3][41];
ushort *linealloc;
ushort *linebuf[_ltotal];
};
int fuji_total_lines, fuji_total_blocks, fuji_block_width, fuji_bits;
ushort raw_height, raw_width, height, width, top_margin, left_margin;
ushort shrink, iheight, iwidth, fuji_width, thumb_width, thumb_height;
unsigned raw_size;
ushort *raw_image;
float * float_raw_image;
ushort white[8][8], curve[0x10000], cr2_slice[3], sraw_mul[4];
@@ -226,6 +269,25 @@ void adobe_copy_pixel (unsigned row, unsigned col, ushort **rp);
void lossless_dng_load_raw();
void packed_dng_load_raw();
void deflate_dng_load_raw();
void init_xtrans(struct xtrans_params* info);
void fuji_fill_buffer(struct xtrans_block *info);
void init_xtrans_block(struct xtrans_block* info, const struct xtrans_params *params, INT64 raw_offset, unsigned dsize);
void copy_line_to_xtrans(struct xtrans_block* info, int cur_line, int cur_block, int cur_block_width);
void fuji_zerobits(struct xtrans_block* info, int *count);
void fuji_read_code(struct xtrans_block* info, int *data, int bits_to_read);
int bitDiff(int value1, int value2);
int fuji_decode_sample_even(struct xtrans_block* info, const struct xtrans_params * params, ushort* line_buf, int pos, struct int_pair* grads);
int fuji_decode_sample_odd(struct xtrans_block* info, const struct xtrans_params * params, ushort* line_buf, int pos, struct int_pair* grads);
void fuji_decode_interpolation_even(int line_width, ushort* line_buf, int pos);
void xtrans_extend_generic(ushort *linebuf[_ltotal], int line_width, int start, int end);
void xtrans_extend_red(ushort *linebuf[_ltotal], int line_width);
void xtrans_extend_green(ushort *linebuf[_ltotal], int line_width);
void xtrans_extend_blue(ushort *linebuf[_ltotal], int line_width);
void xtrans_decode_block(struct xtrans_block* info, const struct xtrans_params *params, int cur_line);
void xtrans_decode_strip(const struct xtrans_params* info_common, int cur_block, INT64 raw_offset, unsigned dsize);
void xtrans_compressed_load_raw();
void xtrans_decode_loop(const struct xtrans_params* common_info, int count, INT64* raw_block_offsets, unsigned *block_sizes);
void parse_xtrans_header();
void pentax_load_raw();
void nikon_load_raw();
int nikon_is_compressed();