diff options
Diffstat (limited to 'converter/other/fiasco/codec/control.c')
| -rw-r--r-- | converter/other/fiasco/codec/control.c | 204 |
1 files changed, 102 insertions, 102 deletions
diff --git a/converter/other/fiasco/codec/control.c b/converter/other/fiasco/codec/control.c index 2ea06052..0588623f 100644 --- a/converter/other/fiasco/codec/control.c +++ b/converter/other/fiasco/codec/control.c @@ -1,8 +1,8 @@ /* - * control.c: Control unit of WFA structure + * control.c: Control unit of WFA structure + * + * Written by: Ullrich Hafner * - * Written by: Ullrich Hafner - * * This file is part of FIASCO (Fractal Image And Sequence COdec) * Copyright (C) 1994-2000 Ullrich Hafner */ @@ -17,7 +17,7 @@ #include "config.h" #include <string.h> - + #include "types.h" #include "macros.h" #include "error.h" @@ -30,24 +30,24 @@ /***************************************************************************** - prototypes - + prototypes + *****************************************************************************/ -static void +static void clear_or_alloc (real_t **ptr, size_t size); -static void +static void compute_images (unsigned from, unsigned to, const wfa_t *wfa, coding_t *c); /***************************************************************************** - public code - + public code + *****************************************************************************/ -void +void append_state (bool_t auxiliary_state, real_t final, unsigned level_of_state, - wfa_t *wfa, coding_t *c) + wfa_t *wfa, coding_t *c) /* * Append a 'wfa' state. If 'auxiliary_state' == YES then * allocate memory for inner products and state images. 'final' is @@ -57,13 +57,13 @@ append_state (bool_t auxiliary_state, real_t final, unsigned level_of_state, * No return value. * * Side effects: - * The WFA information are updated in structure 'wfa' - * State images are computed and inner products are cleared (in 'c') + * The WFA information are updated in structure 'wfa' + * State images are computed and inner products are cleared (in 'c') */ { wfa->final_distribution [wfa->states] = final; wfa->level_of_state [wfa->states] = level_of_state; - + if (!auxiliary_state) { unsigned level; @@ -74,63 +74,63 @@ append_state (bool_t auxiliary_state, real_t final, unsigned level_of_state, * Allocate memory for inner products and for state images */ clear_or_alloc (&c->images_of_state [wfa->states], - size_of_tree (c->options.images_level)); - + size_of_tree (c->options.images_level)); + for (level = c->options.images_level + 1; - level <= c->options.lc_max_level; level++) - clear_or_alloc (&c->ip_states_state [wfa->states][level], - wfa->states + 1); + level <= c->options.lc_max_level; level++) + clear_or_alloc (&c->ip_states_state [wfa->states][level], + wfa->states + 1); clear_or_alloc (&c->ip_images_state [wfa->states], - size_of_tree (c->products_level)); + size_of_tree (c->products_level)); /* * Compute the images of the current state at level 0,..,'imageslevel' */ - + c->images_of_state [wfa->states][0] = final; - compute_images (wfa->states, wfa->states, wfa, c); + compute_images (wfa->states, wfa->states, wfa, c); /* * Compute the inner products between the current state and the * old states 0,...,'states'-1 - */ - + */ + compute_ip_states_state (wfa->states, wfa->states, wfa, c); } else { unsigned level; - + wfa->domain_type [wfa->states] = 0; - + /* * Free the allocated memory */ if (c->images_of_state [wfa->states] != NULL) { - Free (c->images_of_state [wfa->states]); - c->images_of_state [wfa->states] = NULL; + Free (c->images_of_state [wfa->states]); + c->images_of_state [wfa->states] = NULL; } for (level = 0; level <= c->options.lc_max_level; level++) - if (c->ip_states_state [wfa->states][level]) - { - Free (c->ip_states_state [wfa->states][level]); - c->ip_states_state [wfa->states][level] = NULL; - } + if (c->ip_states_state [wfa->states][level]) + { + Free (c->ip_states_state [wfa->states][level]); + c->ip_states_state [wfa->states][level] = NULL; + } if (c->ip_images_state [wfa->states]) { - Free (c->ip_images_state [wfa->states]); - c->ip_images_state [wfa->states] = NULL; + Free (c->ip_images_state [wfa->states]); + c->ip_images_state [wfa->states] = NULL; } } - + wfa->states++; - if (wfa->states >= MAXSTATES) + if (wfa->states >= MAXSTATES) error ("Maximum number of states reached!"); -} - -void +} + +void append_basis_states (unsigned basis_states, wfa_t *wfa, coding_t *c) /* * Append the WFA basis states 0, ... , ('basis_states' - 1). @@ -138,8 +138,8 @@ append_basis_states (unsigned basis_states, wfa_t *wfa, coding_t *c) * No return value. * * Side effects: - * The WFA information are updated in structure 'wfa' - * State images and inner products are computed (in 'c') + * The WFA information are updated in structure 'wfa' + * State images and inner products are computed (in 'c') */ { unsigned level, state; @@ -151,30 +151,30 @@ append_basis_states (unsigned basis_states, wfa_t *wfa, coding_t *c) for (state = 0; state < basis_states; state++) { clear_or_alloc (&c->images_of_state [state], - size_of_tree (c->options.images_level)); + size_of_tree (c->options.images_level)); for (level = c->options.images_level + 1; - level <= c->options.lc_max_level; level++) - clear_or_alloc (&c->ip_states_state [state][level], state + 1); + level <= c->options.lc_max_level; level++) + clear_or_alloc (&c->ip_states_state [state][level], state + 1); clear_or_alloc (&c->ip_images_state [state], - size_of_tree (c->products_level)); + size_of_tree (c->products_level)); c->images_of_state [state][0] = wfa->final_distribution [state]; wfa->level_of_state [state] = -1; } - - compute_images (0, basis_states - 1, wfa, c); + + compute_images (0, basis_states - 1, wfa, c); compute_ip_states_state (0, basis_states - 1, wfa, c); wfa->states = basis_states; - - if (wfa->states >= MAXSTATES) + + if (wfa->states >= MAXSTATES) error ("Maximum number of states reached!"); -} - -void +} + +void append_transitions (unsigned state, unsigned label, const real_t *weight, - const word_t *into, wfa_t *wfa) + const word_t *into, wfa_t *wfa) /* * Append the 'wfa' transitions (given by the arrays 'weight' and 'into') * of the range ('state','label'). @@ -182,7 +182,7 @@ append_transitions (unsigned state, unsigned label, const real_t *weight, * No return value. * * Side effects: - * new 'wfa' edges are appended + * new 'wfa' edges are appended */ { unsigned edge; @@ -192,81 +192,81 @@ append_transitions (unsigned state, unsigned label, const real_t *weight, { append_edge (state, into [edge], weight [edge], label, wfa); if (into [edge] == wfa->y_state [state][label]) - wfa->y_column [state][label] = 1; + wfa->y_column [state][label] = 1; } } /***************************************************************************** - private code - + private code + *****************************************************************************/ -static void +static void compute_images (unsigned from, unsigned to, const wfa_t *wfa, coding_t *c) /* - * Computes the images of the given states 'from', ... , 'to' + * Computes the images of the given states 'from', ... , 'to' * at level 0,...,'c->imagelevel'. * Uses the fact that each state image is a linear combination of state * images, i.e. s_i := c_0 s_0 + ... + c_i s_i. */ { unsigned label, level, state; - + /* * Compute the images Phi(state) - * # level = 0 - * ## level = 1 - * #### level = 2 - * ######## level = 3 + * # level = 0 + * ## level = 1 + * #### level = 2 + * ######## level = 3 * ... * ########...## level = imageslevel */ - + for (level = 1; level <= c->options.images_level; level++) for (state = from; state <= to; state++) - for (label = 0; label < MAXLABELS; label++) - { - real_t *dst, *src; - unsigned edge; - int domain; /* current domain */ - - if (ischild (domain = wfa->tree[state][label])) - { - dst = c->images_of_state [state] + address_of_level (level) + - label * size_of_level (level - 1); - src = c->images_of_state [domain] - + address_of_level (level - 1); - memcpy (dst, src, size_of_level (level - 1) * sizeof (real_t)); - } - for (edge = 0; isedge (domain = wfa->into[state][label][edge]); - edge++) - { - unsigned n; - real_t weight = wfa->weight [state][label][edge]; - - dst = c->images_of_state [state] + address_of_level (level) + - label * size_of_level (level - 1); - src = c->images_of_state [domain] - + address_of_level (level - 1); - - for (n = size_of_level (level - 1); n; n--) - *dst++ += *src++ * weight; - } - } + for (label = 0; label < MAXLABELS; label++) + { + real_t *dst, *src; + unsigned edge; + int domain; /* current domain */ + + if (ischild (domain = wfa->tree[state][label])) + { + dst = c->images_of_state [state] + address_of_level (level) + + label * size_of_level (level - 1); + src = c->images_of_state [domain] + + address_of_level (level - 1); + memcpy (dst, src, size_of_level (level - 1) * sizeof (real_t)); + } + for (edge = 0; isedge (domain = wfa->into[state][label][edge]); + edge++) + { + unsigned n; + real_t weight = wfa->weight [state][label][edge]; + + dst = c->images_of_state [state] + address_of_level (level) + + label * size_of_level (level - 1); + src = c->images_of_state [domain] + + address_of_level (level - 1); + + for (n = size_of_level (level - 1); n; n--) + *dst++ += *src++ * weight; + } + } } -static void +static void clear_or_alloc (real_t **ptr, size_t size) /* - * if *ptr == NULL allocate memory with Calloc - * otherwise fill the real_t-array ptr[] with 0 + * if *ptr == NULL allocate memory with Calloc + * otherwise fill the real_t-array ptr[] with 0 */ { - if (*ptr == NULL) + if (*ptr == NULL) *ptr = Calloc (size, sizeof (real_t)); - else + else memset (*ptr, 0, size * sizeof (real_t)); - + } |