/*
- * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2002-2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
+ * Copyright (c) 2005, Hervé Drolon, FreeImage Team
+ * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
-
#ifndef __TCD_H
#define __TCD_H
+/**
+@file tcd.h
+@brief Implementation of a tile coder/decoder (TCD)
+
+The functions in TCD.C have for goal to encode or decode each tile independently from
+each other. The functions in TCD.C are used by some function in J2K.C.
+*/
-#include "j2k.h"
-#include "tgt.h"
+/** @defgroup TCD TCD - Implementation of a tile coder/decoder */
+/*@{*/
-typedef struct {
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_seg {
int numpasses;
int len;
unsigned char *data;
int maxpasses;
int numnewpasses;
int newlen;
-} tcd_seg_t;
+} opj_tcd_seg_t;
-typedef struct {
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_pass {
int rate;
double distortiondec;
int term, len;
-} tcd_pass_t;
+} opj_tcd_pass_t;
-typedef struct {
- int numpasses; /* Number of passes in the layer */
- int len; /* len of information */
- double disto; /* add for index (Cfr. Marcela) */
- unsigned char *data; /* data */
-} tcd_layer_t;
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_layer {
+ int numpasses; /* Number of passes in the layer */
+ int len; /* len of information */
+ double disto; /* add for index (Cfr. Marcela) */
+ unsigned char *data; /* data */
+} opj_tcd_layer_t;
-typedef struct {
- int x0, y0, x1, y1; /* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_cblk {
+ int x0, y0, x1, y1; /* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
int numbps;
int numlenbits;
- int len; /* length */
- int numpasses; /* number of pass already done for the code-blocks */
- int numnewpasses; /* number of pass added to the code-blocks */
- int numsegs; /* number of segments */
- tcd_seg_t segs[100]; /* segments informations */
- unsigned char data[8192]; /* Data */
- int numpassesinlayers; /* number of passes in the layer */
- tcd_layer_t layers[100]; /* layer information */
- int totalpasses; /* total number of passes */
- tcd_pass_t passes[100]; /* information about the passes */
-} tcd_cblk_t;
-
-typedef struct {
- int x0, y0, x1, y1; /* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
- int cw, ch; /* number of precinct in width and heigth */
- tcd_cblk_t *cblks; /* code-blocks informations */
- tgt_tree_t *incltree; /* inclusion tree */
- tgt_tree_t *imsbtree; /* IMSB tree */
-} tcd_precinct_t;
-
-typedef struct {
- int x0, y0, x1, y1; /* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
+ int len; /* length */
+ int numpasses; /* number of pass already done for the code-blocks */
+ int numnewpasses; /* number of pass added to the code-blocks */
+ int numsegs; /* number of segments */
+ opj_tcd_seg_t segs[100]; /* segments informations */
+ unsigned char data[8192]; /* Data */
+ int numpassesinlayers; /* number of passes in the layer */
+ opj_tcd_layer_t layers[100]; /* layer information */
+ int totalpasses; /* total number of passes */
+ opj_tcd_pass_t passes[100]; /* information about the passes */
+} opj_tcd_cblk_t;
+
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_precinct {
+ int x0, y0, x1, y1; /* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
+ int cw, ch; /* number of precinct in width and heigth */
+ opj_tcd_cblk_t *cblks; /* code-blocks informations */
+ opj_tgt_tree_t *incltree; /* inclusion tree */
+ opj_tgt_tree_t *imsbtree; /* IMSB tree */
+} opj_tcd_precinct_t;
+
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_band {
+ int x0, y0, x1, y1; /* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
int bandno;
- tcd_precinct_t *precincts; /* precinct information */
+ opj_tcd_precinct_t *precincts; /* precinct information */
int numbps;
float stepsize;
-} tcd_band_t;
+} opj_tcd_band_t;
-typedef struct {
- int x0, y0, x1, y1; /* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_resolution {
+ int x0, y0, x1, y1; /* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
int pw, ph;
- int numbands; /* number sub-band for the resolution level */
- tcd_band_t bands[3]; /* subband information */
-} tcd_resolution_t;
-
-typedef struct {
- int x0, y0, x1, y1; /* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
- int numresolutions; /* number of resolutions level */
- tcd_resolution_t *resolutions; /* resolutions information */
- int *data; /* data of the component */
- int nbpix; /* add fixed_quality */
-} tcd_tilecomp_t;
-
-typedef struct {
- int x0, y0, x1, y1; /* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
- int numcomps; /* number of components in tile */
- tcd_tilecomp_t *comps; /* Components information */
- int nbpix; /* add fixed_quality */
- double distotile; /* add fixed_quality */
- double distolayer[100]; /* add fixed_quality */
-} tcd_tile_t;
-
-typedef struct {
- int tw, th; /* number of tiles in width and heigth */
- tcd_tile_t *tiles; /* Tiles information */
-} tcd_image_t;
-
-/*
- * Initialize the tile coder (reuses the memory allocated by tcd_malloc_encode)
- * img: raw image
- * cp: coding parameters
- * curtileno : number that identifies the tile that will be encoded
- */
-void tcd_init_encode(j2k_image_t * img, j2k_cp_t * cp, int curtileno);
-
-
-/*
- * Initialize the tile coder (allocate the memory)
- * img: raw image
- * cp: coding parameters
- * curtileno : number that identifies the tile that will be encoded
- */
-void tcd_malloc_encode(j2k_image_t * img, j2k_cp_t * cp, int curtileno);
+ int numbands; /* number sub-band for the resolution level */
+ opj_tcd_band_t bands[3]; /* subband information */
+} opj_tcd_resolution_t;
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_tilecomp {
+ int x0, y0, x1, y1; /* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
+ int numresolutions; /* number of resolutions level */
+ opj_tcd_resolution_t *resolutions; /* resolutions information */
+ int *data; /* data of the component */
+ int nbpix; /* add fixed_quality */
+} opj_tcd_tilecomp_t;
-/*
- * Initialize the tile decoder
- * img: raw image
- * cp: coding parameters
- */
-void tcd_init(j2k_image_t * img, j2k_cp_t * cp);
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_tile {
+ int x0, y0, x1, y1; /* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
+ int numcomps; /* number of components in tile */
+ opj_tcd_tilecomp_t *comps; /* Components information */
+ int nbpix; /* add fixed_quality */
+ double distotile; /* add fixed_quality */
+ double distolayer[100]; /* add fixed_quality */
+} opj_tcd_tile_t;
+/**
+FIXME: documentation
+*/
+typedef struct opj_tcd_image {
+ int tw, th; /* number of tiles in width and heigth */
+ opj_tcd_tile_t *tiles; /* Tiles information */
+} opj_tcd_image_t;
-/*
- * Free the memory allocated for encoding
- * img: raw image
- * cp: coding parameters
- * curtileno : number that identifies the tile that will be encoded
- */
-void tcd_free_encode(j2k_image_t * img, j2k_cp_t * cp, int curtileno);
+/**
+Tile coder/decoder
+*/
+typedef struct opj_tcd {
+ /** codec context */
+ opj_common_ptr cinfo;
-/*
- * Encode a tile from the raw image into a buffer, format pnm, pgm or ppm
- * tileno: number that identifies one of the tiles to be encoded
- * dest: destination buffer
- * len: length of destination buffer
- * info_IM: creation of index file
- */
-int tcd_encode_tile_pxm(int tileno, unsigned char *dest, int len,
- info_image * info_IM);
+ /** info on each image tile */
+ opj_tcd_image_t *tcd_image;
+ /** image */
+ opj_image_t *image;
+ /** coding parameters */
+ opj_cp_t *cp;
+ /** pointer to the current encoded/decoded tile */
+ opj_tcd_tile_t *tcd_tile;
+ /** coding/decoding parameters common to all tiles */
+ opj_tcp_t *tcp;
+ /** current encoded/decoded tile */
+ int tcd_tileno;
+ /**@name working variables */
+ /*@{*/
+ opj_tcd_tile_t *tile;
+ opj_tcd_tilecomp_t *tilec;
+ opj_tcd_resolution_t *res;
+ opj_tcd_band_t *band;
+ opj_tcd_precinct_t *prc;
+ opj_tcd_cblk_t *cblk;
+ /*@}*/
+} opj_tcd_t;
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
-/*
- * Encode a tile from the raw image into a buffer, format pgx
- * tileno: number that identifies one of the tiles to be encoded
- * dest: destination buffer
- * len: length of destination buffer
- * info_IM: creation of index file
- */
-int tcd_encode_tile_pgx(int tileno, unsigned char *dest, int len,
- info_image * info_IM);
-
-/*
- * Decode a tile from a buffer into a raw image
- * src: source buffer
- * len: length of the source buffer
- * tileno: number that identifies the tile that will be decoded
- */
-int tcd_decode_tile(unsigned char *src, int len, int tileno);
+/**
+Dump the content of a tcd structure
+*/
+void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t *img);
+/**
+Create a new TCD handle
+@param cinfo Codec context info
+@return Returns a new TCD handle if successful returns NULL otherwise
+*/
+opj_tcd_t* tcd_create(opj_common_ptr cinfo);
+/**
+Destroy a previously created TCD handle
+@param tcd TCD handle to destroy
+*/
+void tcd_destroy(opj_tcd_t *tcd);
+/**
+Initialize the tile coder (allocate the memory)
+@param tcd TCD handle
+@param image Raw image
+@param cp Coding parameters
+@param curtileno Number that identifies the tile that will be encoded
+*/
+void tcd_malloc_encode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int curtileno);
+/**
+Free the memory allocated for encoding
+@param tcd TCD handle
+*/
+void tcd_free_encode(opj_tcd_t *tcd);
+/**
+Initialize the tile coder (reuses the memory allocated by tcd_malloc_encode)
+@param tcd TCD handle
+@param image Raw image
+@param cp Coding parameters
+@param curtileno Number that identifies the tile that will be encoded
+*/
+void tcd_init_encode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int curtileno);
+/**
+Initialize the tile decoder
+@param tcd TCD handle
+@param image Raw image
+@param cp Coding parameters
+*/
+void tcd_malloc_decode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp);
+void tcd_makelayer_fixed(opj_tcd_t *tcd, int layno, int final);
+void tcd_rateallocate_fixed(opj_tcd_t *tcd);
+void tcd_makelayer(opj_tcd_t *tcd, int layno, double thresh, int final);
+bool tcd_rateallocate(opj_tcd_t *tcd, unsigned char *dest, int len, opj_image_info_t * image_info);
+/**
+Encode a tile from the raw image into a buffer
+@param tcd TCD handle
+@param tileno Number that identifies one of the tiles to be encoded
+@param dest Destination buffer
+@param len Length of destination buffer
+@param image_info Creation of index file
+@return
+*/
+int tcd_encode_tile(opj_tcd_t *tcd, int tileno, unsigned char *dest, int len, opj_image_info_t * image_info);
+/**
+Decode a tile from a buffer into a raw image
+@param tcd TCD handle
+@param src Source buffer
+@param len Length of source buffer
+@param tileno Number that identifies one of the tiles to be decoded
+*/
+bool tcd_decode_tile(opj_tcd_t *tcd, unsigned char *src, int len, int tileno);
+/**
+Free the memory allocated for decoding
+@param tcd TCD handle
+*/
+void tcd_free_decode(opj_tcd_t *tcd);
-void tcd_dec_release();
+/* ----------------------------------------------------------------------- */
+/*@}*/
-#endif
+/*@}*/
+#endif /* __TCD_H */
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