diff options
Diffstat (limited to 'converter/other/fiasco/input/read.c')
| -rw-r--r-- | converter/other/fiasco/input/read.c | 354 |
1 files changed, 177 insertions, 177 deletions
diff --git a/converter/other/fiasco/input/read.c b/converter/other/fiasco/input/read.c index c3aa77a8..50e271e5 100644 --- a/converter/other/fiasco/input/read.c +++ b/converter/other/fiasco/input/read.c @@ -1,7 +1,7 @@ /* - * read.c: Input of WFA files + * read.c: Input of WFA files * - * 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 @@ -46,17 +46,17 @@ /***************************************************************************** - prototypes + prototypes *****************************************************************************/ static void read_tiling (tiling_t *tiling, unsigned image_width, unsigned image_height, - unsigned image_level, bitfile_t *input); + unsigned image_level, bitfile_t *input); /***************************************************************************** - public code + public code *****************************************************************************/ @@ -66,14 +66,14 @@ open_wfa (const char *filename, wfa_info_t *wi) * Open WFA file 'filename' and read header information. * * Return value: - * Pointer to input stream (fileposition: first WFA frame) + * Pointer to input stream (fileposition: first WFA frame) * * Side effects: - * The values of the header of 'filename' are copied to 'wfainfo'. + * The values of the header of 'filename' are copied to 'wfainfo'. * */ { - bitfile_t *input; /* pointer to WFA bitfile */ + bitfile_t *input; /* pointer to WFA bitfile */ assert (filename && wi); @@ -83,7 +83,7 @@ open_wfa (const char *filename, wfa_info_t *wi) * Check whether 'filename' is a regular WFA file */ { - unsigned n; + unsigned n; const char *str; if (!(input = open_bitfile (filename, "FIASCO_DATA", READ_ACCESS))) @@ -92,57 +92,57 @@ open_wfa (const char *filename, wfa_info_t *wi) for (str = FIASCO_MAGIC, n = strlen (FIASCO_MAGIC); n; n--) if (get_bits (input, 8) != (unsigned) *str++) error ("Input file %s is not a valid FIASCO file!", filename); - get_bits (input, 8); /* fetch newline */ + get_bits (input, 8); /* fetch newline */ } /* * Read WFA header information */ { - char basis_name [MAXSTRLEN]; /* temp. buffer */ - const unsigned rice_k = 8; /* parameter of Rice Code */ - char *str = basis_name; + char basis_name [MAXSTRLEN]; /* temp. buffer */ + const unsigned rice_k = 8; /* parameter of Rice Code */ + char *str = basis_name; while ((*str++ = get_bits (input, 8)) != 0 - && str < basis_name + MAXSTRLEN) - ; + && str < basis_name + MAXSTRLEN) + ; if (str == basis_name + MAXSTRLEN) - error ("Input file %s is not a valid FIASCO file!", filename); + error ("Input file %s is not a valid FIASCO file!", filename); { - wi->release = read_rice_code (rice_k, input); + wi->release = read_rice_code (rice_k, input); - if (wi->release > FIASCO_BINFILE_RELEASE) - error ("Can't decode FIASCO files of file format release `%d'." - "\nCurrent file format release is `%d'.", wi->release, - FIASCO_BINFILE_RELEASE); + if (wi->release > FIASCO_BINFILE_RELEASE) + error ("Can't decode FIASCO files of file format release `%d'." + "\nCurrent file format release is `%d'.", wi->release, + FIASCO_BINFILE_RELEASE); } if (wi->release > 1) { - header_type_e type; - - while ((type = read_rice_code (rice_k, input)) != HEADER_END) - { - char buffer [MAXSTRLEN]; - unsigned n = 0; - - switch (type) - { - case HEADER_TITLE: - while ((buffer [n++] = get_bits (input, 8))) - ; - wi->title = strdup (buffer); - break; - case HEADER_COMMENT: - while ((buffer [n++] = get_bits (input, 8))) - ; - wi->comment = strdup (buffer); - break; - default: /* should not happen */ - break; - } - } + header_type_e type; + + while ((type = read_rice_code (rice_k, input)) != HEADER_END) + { + char buffer [MAXSTRLEN]; + unsigned n = 0; + + switch (type) + { + case HEADER_TITLE: + while ((buffer [n++] = get_bits (input, 8))) + ; + wi->title = strdup (buffer); + break; + case HEADER_COMMENT: + while ((buffer [n++] = get_bits (input, 8))) + ; + wi->comment = strdup (buffer); + break; + default: /* should not happen */ + break; + } + } } wi->basis_name = strdup (basis_name); @@ -155,65 +155,65 @@ open_wfa (const char *filename, wfa_info_t *wi) * Compute bintree level */ { - unsigned lx = log2 (wi->width - 1) + 1; - unsigned ly = log2 (wi->height - 1) + 1; + unsigned lx = log2 (wi->width - 1) + 1; + unsigned ly = log2 (wi->height - 1) + 1; - wi->level = MAX(lx, ly) * 2 - ((ly == lx + 1) ? 1 : 0); + wi->level = MAX(lx, ly) * 2 - ((ly == lx + 1) ? 1 : 0); } wi->chroma_max_states = wi->color ? read_rice_code (rice_k, input) : -1; wi->p_min_level = read_rice_code (rice_k, input); wi->p_max_level = read_rice_code (rice_k, input); wi->frames = read_rice_code (rice_k, input); - wi->smoothing = read_rice_code (rice_k, input); + wi->smoothing = read_rice_code (rice_k, input); /* * Read RPF models from disk */ { - unsigned mantissa; - fiasco_rpf_range_e range; - - mantissa = get_bits (input, 3) + 2; - range = get_bits (input, 2); - wi->rpf = alloc_rpf (mantissa, range); - - if (get_bit (input)) /* different DC model */ - { - mantissa = get_bits (input, 3) + 2; - range = get_bits (input, 2); - wi->dc_rpf = alloc_rpf (mantissa, range); - } - else /* use same model for DC coefficients */ - wi->dc_rpf = alloc_rpf (wi->rpf->mantissa_bits, - wi->rpf->range_e); - - if (get_bit (input)) /* different delta model */ - { - mantissa = get_bits (input, 3) + 2; - range = get_bits (input, 2); - wi->d_rpf = alloc_rpf (mantissa, range); - } - else - wi->d_rpf = alloc_rpf (wi->rpf->mantissa_bits, - wi->rpf->range_e); - - if (get_bit (input)) /* different DC delta model */ - { - mantissa = get_bits (input, 3) + 2; - range = get_bits (input, 2); - wi->d_dc_rpf = alloc_rpf (mantissa, range); - } - else - wi->d_dc_rpf = alloc_rpf (wi->dc_rpf->mantissa_bits, - wi->dc_rpf->range_e); + unsigned mantissa; + fiasco_rpf_range_e range; + + mantissa = get_bits (input, 3) + 2; + range = get_bits (input, 2); + wi->rpf = alloc_rpf (mantissa, range); + + if (get_bit (input)) /* different DC model */ + { + mantissa = get_bits (input, 3) + 2; + range = get_bits (input, 2); + wi->dc_rpf = alloc_rpf (mantissa, range); + } + else /* use same model for DC coefficients */ + wi->dc_rpf = alloc_rpf (wi->rpf->mantissa_bits, + wi->rpf->range_e); + + if (get_bit (input)) /* different delta model */ + { + mantissa = get_bits (input, 3) + 2; + range = get_bits (input, 2); + wi->d_rpf = alloc_rpf (mantissa, range); + } + else + wi->d_rpf = alloc_rpf (wi->rpf->mantissa_bits, + wi->rpf->range_e); + + if (get_bit (input)) /* different DC delta model */ + { + mantissa = get_bits (input, 3) + 2; + range = get_bits (input, 2); + wi->d_dc_rpf = alloc_rpf (mantissa, range); + } + else + wi->d_dc_rpf = alloc_rpf (wi->dc_rpf->mantissa_bits, + wi->dc_rpf->range_e); } - if (wi->frames > 1) /* motion compensation stuff */ + if (wi->frames > 1) /* motion compensation stuff */ { - wi->fps = read_rice_code (rice_k, input); - wi->search_range = read_rice_code (rice_k, input); - wi->half_pixel = get_bit (input) ? YES : NO; - wi->B_as_past_ref = get_bit (input) ? YES : NO; + wi->fps = read_rice_code (rice_k, input); + wi->search_range = read_rice_code (rice_k, input); + wi->half_pixel = get_bit (input) ? YES : NO; + wi->B_as_past_ref = get_bit (input) ? YES : NO; } } @@ -230,12 +230,12 @@ read_basis (const char *filename, wfa_t *wfa) * No return value. * * Side effects: - * wfa->into, wfa->weights, wfa->final_distribution, wfa->basis_states - * wfa->domain_type wfa->wfainfo->basis_name, are filled with the - * values of the WFA basis. + * wfa->into, wfa->weights, wfa->final_distribution, wfa->basis_states + * wfa->domain_type wfa->wfainfo->basis_name, are filled with the + * values of the WFA basis. */ { - FILE *input; /* ASCII WFA initial basis file */ + FILE *input; /* ASCII WFA initial basis file */ assert (filename && wfa); @@ -243,27 +243,27 @@ read_basis (const char *filename, wfa_t *wfa) !streq (wfa->wfainfo->basis_name, filename)) { if (wfa->wfainfo->basis_name) - Free (wfa->wfainfo->basis_name); + Free (wfa->wfainfo->basis_name); wfa->wfainfo->basis_name = strdup (filename); } if (get_linked_basis (filename, wfa)) - return; /* basis is linked with executable */ + return; /* basis is linked with executable */ /* * Check whether 'wfa_name' is a regular ASCII WFA initial basis file */ { - char magic [MAXSTRLEN]; /* WFA magic number */ + char magic [MAXSTRLEN]; /* WFA magic number */ if (!(input = open_file (filename, "FIASCO_DATA", READ_ACCESS))) - file_error(filename); + file_error(filename); if (fscanf (input, MAXSTRLEN_SCANF, magic) != 1) - error ("Format error: ASCII FIASCO initial basis file %s", filename); + error ("Format error: ASCII FIASCO initial basis file %s", filename); else if (!streq (FIASCO_BASIS_MAGIC, magic)) - error ("Input file %s is not an ASCII FIASCO initial basis!", - filename); + error ("Input file %s is not an ASCII FIASCO initial basis!", + filename); } /* @@ -273,74 +273,74 @@ read_basis (const char *filename, wfa_t *wfa) * Don't define any transitions of state 0 in an initial basis. * * Header: - * type |description - * ----------------+----------- - * string |MAGIC Number "Wfa" - * int |Number of basis states 'N' - * bool_t-array[N] |use vector in linear combinations, - * |0: don't use vector (auxiliary state) - * |1: use vector in linear combinations - * float-array[N] |final distribution of every state + * type |description + * ----------------+----------- + * string |MAGIC Number "Wfa" + * int |Number of basis states 'N' + * bool_t-array[N] |use vector in linear combinations, + * |0: don't use vector (auxiliary state) + * |1: use vector in linear combinations + * float-array[N] |final distribution of every state * * Transitions: * - * <state 1> current state - * <label> <into> <weight> transition 1 of current state - * <label> <into> <weight> transition 2 of current state + * <state 1> current state + * <label> <into> <weight> transition 1 of current state + * <label> <into> <weight> transition 2 of current state * ... - * <-1> last transition marker + * <-1> last transition marker * <state 2> * ... - * <-1> last transition marker + * <-1> last transition marker * <state N> * ... * - * <-1> last transition marker - * <-1> last state marker + * <-1> last transition marker + * <-1> last state marker */ { unsigned state; if (fscanf (input ,"%u", &wfa->basis_states) != 1) - error ("Format error: ASCII FIASCO initial basis file %s", filename); + error ("Format error: ASCII FIASCO initial basis file %s", filename); /* * State 0 is assumed to be the constant function f(x, y) = 128. */ wfa->domain_type [0] = USE_DOMAIN_MASK; wfa->final_distribution [0] = 128; - wfa->states = wfa->basis_states; + wfa->states = wfa->basis_states; wfa->basis_states++; append_edge (0, 0, 1.0, 0, wfa); append_edge (0, 0, 1.0, 1, wfa); for (state = 1; state < wfa->basis_states; state++) - wfa->domain_type [state] - = read_int (input) ? USE_DOMAIN_MASK : AUXILIARY_MASK; + wfa->domain_type [state] + = read_int (input) ? USE_DOMAIN_MASK : AUXILIARY_MASK; for (state = 1; state < wfa->basis_states; state++) - wfa->final_distribution[state] = read_real (input); + wfa->final_distribution[state] = read_real (input); /* * Read transitions */ for (state = 1; state < wfa->basis_states; state++) { - unsigned domain; - int label; - real_t weight; - - if (read_int (input) != (int) state) - error ("Format error: ASCII FIASCO initial basis file %s", - filename); - - while((label = read_int (input)) != -1) - { - domain = read_int (input); - weight = read_real (input); - append_edge (state, domain, weight, label, wfa); - } + unsigned domain; + int label; + real_t weight; + + if (read_int (input) != (int) state) + error ("Format error: ASCII FIASCO initial basis file %s", + filename); + + while((label = read_int (input)) != -1) + { + domain = read_int (input); + weight = read_real (input); + append_edge (state, domain, weight, label, wfa); + } } } @@ -357,13 +357,13 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) * No return value. * * Side effects: - * wfa->into, wfa->weights, wfa->final_distribution, wfa->states - * wfa->x, wfa->y, wfa->level_of_state, wfa->domain_type + * wfa->into, wfa->weights, wfa->final_distribution, wfa->states + * wfa->x, wfa->y, wfa->level_of_state, wfa->domain_type * mt->type, mt->number are filled with the values of the WFA file. */ { - tiling_t tiling; /* tiling information */ - unsigned frame_number; /* current frame number */ + tiling_t tiling; /* tiling information */ + unsigned frame_number; /* current frame number */ assert (wfa && input); @@ -371,14 +371,14 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) * Frame header information */ { - const unsigned rice_k = 8; /* parameter of Rice Code */ + const unsigned rice_k = 8; /* parameter of Rice Code */ wfa->states = read_rice_code (rice_k, input); wfa->frame_type = read_rice_code (rice_k, input); frame_number = read_rice_code (rice_k, input); } - if (wfa->wfainfo->release > 1) /* no alignment in version 1 */ + if (wfa->wfainfo->release > 1) /* no alignment in version 1 */ { INPUT_BYTE_ALIGN (input); } @@ -386,9 +386,9 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) /* * Read image tiling info */ - if (get_bit (input)) /* tiling performed ? */ + if (get_bit (input)) /* tiling performed ? */ read_tiling (&tiling, wfa->wfainfo->width, wfa->wfainfo->height, - wfa->wfainfo->level, input); + wfa->wfainfo->level, input); else tiling.exponent = 0; @@ -404,30 +404,30 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) unsigned state; for (state = wfa->basis_states; state < wfa->states; state++) - if ((!wfa->wfainfo->color - || (int) state <= wfa->tree [wfa->tree [wfa->root_state][0]][0]) - && - (!tiling.exponent || - wfa->level_of_state [state] <= (wfa->wfainfo->level - - tiling.exponent)) - && ((wfa->x [state][0] - + width_of_level (wfa->level_of_state [state])) - <= wfa->wfainfo->width) - && ((wfa->y [state][0] - + height_of_level (wfa->level_of_state [state])) - <= wfa->wfainfo->height)) - wfa->domain_type [state] = USE_DOMAIN_MASK; - else - wfa->domain_type [state] = 0; + if ((!wfa->wfainfo->color + || (int) state <= wfa->tree [wfa->tree [wfa->root_state][0]][0]) + && + (!tiling.exponent || + wfa->level_of_state [state] <= (wfa->wfainfo->level + - tiling.exponent)) + && ((wfa->x [state][0] + + width_of_level (wfa->level_of_state [state])) + <= wfa->wfainfo->width) + && ((wfa->y [state][0] + + height_of_level (wfa->level_of_state [state])) + <= wfa->wfainfo->height)) + wfa->domain_type [state] = USE_DOMAIN_MASK; + else + wfa->domain_type [state] = 0; } if (tiling.exponent) Free (tiling.vorder); - if (get_bit (input)) /* nondeterministic prediction used */ + if (get_bit (input)) /* nondeterministic prediction used */ read_nd (wfa, input); - if (wfa->frame_type != I_FRAME) /* motion compensation used */ + if (wfa->frame_type != I_FRAME) /* motion compensation used */ read_mc (wfa->frame_type, wfa, input); locate_delta_images (wfa); @@ -439,7 +439,7 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) unsigned edges = read_matrices (wfa, input); if (edges) - read_weights (edges, wfa, input); + read_weights (edges, wfa, input); } /* @@ -449,8 +449,8 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) unsigned state; for (state = wfa->basis_states; state <= wfa->states; state++) - wfa->final_distribution[state] - = compute_final_distribution (state, wfa); + wfa->final_distribution[state] + = compute_final_distribution (state, wfa); } return frame_number; @@ -458,13 +458,13 @@ read_next_wfa (wfa_t *wfa, bitfile_t *input) /***************************************************************************** - private code + private code *****************************************************************************/ static void read_tiling (tiling_t *tiling, unsigned image_width, unsigned image_height, - unsigned image_level, bitfile_t *input) + unsigned image_level, bitfile_t *input) /* * Read image tiling information from the given file 'input' * and store parameters in struct 'tiling'. @@ -472,32 +472,32 @@ read_tiling (tiling_t *tiling, unsigned image_width, unsigned image_height, * No return value. */ { - const unsigned rice_k = 8; /* parameter of Rice Code */ + const unsigned rice_k = 8; /* parameter of Rice Code */ tiling->exponent = read_rice_code (rice_k, input); - if (get_bit (input)) /* variance order */ + if (get_bit (input)) /* variance order */ { - unsigned tile; /* current image tile */ - unsigned x0, y0; /* NW corner of image tile */ - unsigned width, height; /* size of image tile */ + unsigned tile; /* current image tile */ + unsigned x0, y0; /* NW corner of image tile */ + unsigned width, height; /* size of image tile */ tiling->vorder = Calloc (1 << tiling->exponent, sizeof (int)); for (tile = 0; tile < 1U << tiling->exponent; tile++) { - locate_subimage (image_level, image_level - tiling->exponent, tile, - &x0, &y0, &width, &height); - if (x0 < image_width && y0 < image_height) - tiling->vorder [tile] = get_bits (input, tiling->exponent); - else - tiling->vorder [tile] = -1; + locate_subimage (image_level, image_level - tiling->exponent, tile, + &x0, &y0, &width, &height); + if (x0 < image_width && y0 < image_height) + tiling->vorder [tile] = get_bits (input, tiling->exponent); + else + tiling->vorder [tile] = -1; } } - else /* spiral order */ + else /* spiral order */ { tiling->vorder = Calloc (1 << tiling->exponent, sizeof (int)); compute_spiral (tiling->vorder, image_width, image_height, - tiling->exponent, get_bit (input) ? YES : NO); + tiling->exponent, get_bit (input) ? YES : NO); } } |