diff options
Diffstat (limited to 'converter/other/fiasco/codec/decoder.c')
-rw-r--r-- | converter/other/fiasco/codec/decoder.c | 1797 |
1 files changed, 899 insertions, 898 deletions
diff --git a/converter/other/fiasco/codec/decoder.c b/converter/other/fiasco/codec/decoder.c index 9474c1e7..ea61968e 100644 --- a/converter/other/fiasco/codec/decoder.c +++ b/converter/other/fiasco/codec/decoder.c @@ -1,9 +1,9 @@ /* - * decode.c: Decoding of an image represented by a WFA + * decode.c: Decoding of an image represented by a WFA * - * Written by: Ullrich Hafner - * Michael Unger - * + * Written by: Ullrich Hafner + * Michael Unger + * * This file is part of FIASCO («F»ractal «I»mage «A»nd «S»equence «CO»dec) * Copyright (C) 1994-2000 Ullrich Hafner <hafner@bigfoot.de> */ @@ -15,12 +15,13 @@ * $State: Exp $ */ +#include "pm_config.h" #include "config.h" #if HAVE_STRING_H -# include <string.h> +# include <string.h> #else /* not HAVE_STRING_H */ -# include <strings.h> +# include <strings.h> #endif /* not HAVE_STRING_H */ #include "types.h" @@ -37,33 +38,33 @@ /***************************************************************************** - prototypes + prototypes *****************************************************************************/ static void compute_state_images (unsigned frame_level, word_t **simg, - const u_word_t *offset, const wfa_t *wfa); + const u_word_t *offset, const wfa_t *wfa); static void free_state_images (unsigned max_level, bool_t color, word_t **state_image, - u_word_t *offset, const unsigned *root_state, - unsigned range_state, format_e format, const wfa_t *wfa); + u_word_t *offset, const unsigned *root_state, + unsigned range_state, format_e format, const wfa_t *wfa); static void alloc_state_images (word_t ***images, u_word_t **offsets, const image_t *frame, - const unsigned *root_state, unsigned range_state, - unsigned max_level, format_e format, const wfa_t *wfa); + const unsigned *root_state, unsigned range_state, + unsigned max_level, format_e format, const wfa_t *wfa); static void compute_actual_size (unsigned luminance_root, - unsigned *width, unsigned *height, const wfa_t *wfa); + unsigned *width, unsigned *height, const wfa_t *wfa); static void enlarge_image (int enlarge_factor, format_e format, unsigned y_root, - wfa_t *wfa); + wfa_t *wfa); static word_t * duplicate_state_image (const word_t *domain, unsigned offset, unsigned level); /***************************************************************************** - public code + public code *****************************************************************************/ @@ -75,7 +76,7 @@ alloc_video (bool_t store_wfa) * and future WFA if flag 'store_wfa' is TRUE. * * Return value: - * pointer to the new video structure + * pointer to the new video structure */ { video_t *video = Calloc (1, sizeof (video_t)); @@ -84,7 +85,7 @@ alloc_video (bool_t store_wfa) video->display = 0; video->future = video->sfuture = video->past - = video->frame = video->sframe = NULL; + = video->frame = video->sframe = NULL; if (store_wfa) { @@ -107,7 +108,7 @@ free_video (video_t *video) * No return value. * * Side effects: - * 'video' struct is discarded. + * 'video' struct is discarded. */ { if (video->past) @@ -132,9 +133,9 @@ free_video (video_t *video) image_t * get_next_frame (bool_t store_wfa, int enlarge_factor, - int smoothing, const char *reference_frame, - format_e format, video_t *video, dectimer_t *timer, - wfa_t *orig_wfa, bitfile_t *input) + int smoothing, const char *reference_frame, + format_e format, video_t *video, dectimer_t *timer, + wfa_t *orig_wfa, bitfile_t *input) /* * Get next frame of the WFA 'video' from stream 'input'. * 'orig_wfa' is the constant part of the WFA used by all frames. @@ -148,265 +149,265 @@ get_next_frame (bool_t store_wfa, int enlarge_factor, * If 'timer' is not NULL, then accumulate running time statistics. * * Return value: - * pointer to decoded frame + * pointer to decoded frame * * Side effects: - * 'video' and 'timer' struct are modified. + * 'video' and 'timer' struct are modified. */ { - image_t *frame = NULL; /* current frame */ - image_t *sframe = NULL; /* current smoothed frame */ + image_t *frame = NULL; /* current frame */ + image_t *sframe = NULL; /* current smoothed frame */ bool_t current_frame_is_future_frame = NO; - if (video->future_display == video->display) + if (video->future_display == video->display) { /* * Future frame is already computed since it has been used * as reference frame. So just return the stored frame. */ if (video->frame) /* discard current frame */ - free_image (video->frame); + free_image (video->frame); video->frame = video->future; video->future = NULL; if (video->sframe) /* discard current (smoothed) frame */ - free_image (video->sframe); + free_image (video->sframe); video->sframe = video->sfuture; video->sfuture = NULL; if (store_wfa) - copy_wfa (video->wfa, video->wfa_future); + copy_wfa (video->wfa, video->wfa_future); video->display++; if (!store_wfa) - video->wfa = NULL; + video->wfa = NULL; } else { - do /* compute next frame(s) */ + do /* compute next frame(s) */ { - unsigned frame_number; /* current frame number */ - clock_t ptimer; - unsigned int stop_timer [3]; - wfa_t *tmp_wfa = NULL; - - if (!store_wfa) - video->wfa = orig_wfa; - else - { - tmp_wfa = alloc_wfa (NO); - copy_wfa (tmp_wfa, video->wfa); - copy_wfa (video->wfa, orig_wfa); - } + unsigned frame_number; /* current frame number */ + clock_t ptimer; + unsigned int stop_timer [3]; + wfa_t *tmp_wfa = NULL; + + if (!store_wfa) + video->wfa = orig_wfa; + else + { + tmp_wfa = alloc_wfa (NO); + copy_wfa (tmp_wfa, video->wfa); + copy_wfa (video->wfa, orig_wfa); + } - /* - * First step: read WFA from disk - */ - prg_timer (&ptimer, START); - frame_number = read_next_wfa (video->wfa, input); - stop_timer [0] = prg_timer (&ptimer, STOP); - if (timer) - { - timer->input [video->wfa->frame_type] += stop_timer [0]; - timer->frames [video->wfa->frame_type]++; - } + /* + * First step: read WFA from disk + */ + prg_timer (&ptimer, START); + frame_number = read_next_wfa (video->wfa, input); + stop_timer [0] = prg_timer (&ptimer, STOP); + if (timer) + { + timer->input [video->wfa->frame_type] += stop_timer [0]; + timer->frames [video->wfa->frame_type]++; + } - /* - * Read reference frame from disk if required - * (i.e., 1st frame is of type B or P) - */ - if (video->display == 0 && video->wfa->frame_type != I_FRAME) - { - if (!reference_frame) - error ("First frame is %c-frame but no " - "reference frame is given.", - video->wfa->frame_type == B_FRAME ? 'B' : 'P'); - - video->frame = read_image (reference_frame); - video->sframe = NULL; - } + /* + * Read reference frame from disk if required + * (i.e., 1st frame is of type B or P) + */ + if (video->display == 0 && video->wfa->frame_type != I_FRAME) + { + if (!reference_frame) + error ("First frame is %c-frame but no " + "reference frame is given.", + video->wfa->frame_type == B_FRAME ? 'B' : 'P'); + + video->frame = read_image (reference_frame); + video->sframe = NULL; + } - /* - * Depending on current frame type update past and future frames - */ - if (video->wfa->frame_type == I_FRAME) - { - if (video->past) /* discard past frame */ - free_image (video->past); - video->past = NULL; - if (video->future) /* discard future frame */ - free_image (video->future); - video->future = NULL; - if (video->sfuture) /* discard (smoothed) future frame */ - free_image (video->sfuture); - video->sfuture = NULL; - if (video->frame) /* discard current frame */ - free_image (video->frame); - video->frame = NULL; - if (video->sframe) /* discard current (smoothed) frame */ - free_image (video->sframe); - video->sframe = NULL; - } - else if (video->wfa->frame_type == P_FRAME) - { - if (video->past) /* discard past frame */ - free_image (video->past); - video->past = video->frame; /* past <- current frame */ - video->frame = NULL; - if (video->sframe) /* discard current (smoothed) frame */ - free_image (video->sframe); - video->sframe = NULL; - if (store_wfa) - copy_wfa (video->wfa_past, tmp_wfa); - if (video->future) /* discard future frame */ - free_image (video->future); - video->future = NULL; - if (video->sfuture) /* discard (smoothed) future frame */ - free_image (video->sfuture); - video->sfuture = NULL; - } - else /* B_FRAME */ - { - if (current_frame_is_future_frame) - { - if (video->future) /* discard future frame */ - free_image (video->future); - video->future = frame; /* future <- current frame */ - if (video->sfuture) /* discard (smoothed) future frame */ - free_image (video->sfuture); - video->sfuture = sframe; /* future <- current (smoothed) */ - if (store_wfa) - copy_wfa (video->wfa_future, tmp_wfa); - if (video->frame) /* discard current frame */ - free_image (video->frame); - video->frame = NULL; - if (video->sframe) /* discard current (smoothed) frame */ - free_image (video->sframe); - video->sframe = NULL; - frame = NULL; - sframe = NULL; - } - else - { - if (video->wfa->wfainfo->B_as_past_ref == YES) - { - if (video->past) /* discard past frame */ - free_image (video->past); - video->past = video->frame; /* past <- current frame */ - video->frame = NULL; - if (video->sframe) /* discard current (smoothed) frame */ - free_image (video->sframe); - video->sframe = NULL; - if (store_wfa) - copy_wfa (video->wfa_past, tmp_wfa); - } - else - { - if (video->frame) /* discard current */ - free_image (video->frame); - video->frame = NULL; - if (video->sframe) /* discard current (smoothed) frame */ - free_image (video->sframe); - video->sframe = NULL; - } - } - } - if (tmp_wfa) - free_wfa (tmp_wfa); - - current_frame_is_future_frame = NO; - /* - * Second step: decode image - * Optionally enlarge image if specified by option 'enlarge_factor'. - */ - { - unsigned orig_width, orig_height; - - stop_timer [0] = stop_timer [1] = stop_timer [2] = 0; - - enlarge_image (enlarge_factor, format, - (video->wfa->wfainfo->color - && format == FORMAT_4_2_0) - ? video->wfa->tree [video->wfa->tree [video->wfa->root_state][0]][0] : -1, video->wfa); - - if (enlarge_factor > 0) - { - orig_width = video->wfa->wfainfo->width << enlarge_factor; - orig_height = video->wfa->wfainfo->height << enlarge_factor; - } - else - { - orig_width = video->wfa->wfainfo->width >> - enlarge_factor; - orig_height = video->wfa->wfainfo->height >> - enlarge_factor; - if (orig_width & 1) - orig_width++; - if (orig_height & 1) - orig_height++; - } - - frame = decode_image (orig_width, orig_height, format, - timer != NULL ? stop_timer : NULL, - video->wfa); - if (timer) - { - timer->preprocessing [video->wfa->frame_type] += stop_timer [0]; - timer->decoder [video->wfa->frame_type] += stop_timer [1]; - timer->cleanup [video->wfa->frame_type] += stop_timer [2]; - } - } - - /* - * Third step: restore motion compensation - */ - if (video->wfa->frame_type != I_FRAME) - { - prg_timer (&ptimer, START); - restore_mc (enlarge_factor, frame, video->past, video->future, - video->wfa); - stop_timer [0] = prg_timer (&ptimer, STOP); - if (timer) - timer->motion [video->wfa->frame_type] += stop_timer [0]; - } - - /* - * Fourth step: smooth image along partitioning borders - */ - prg_timer (&ptimer, START); - if (smoothing < 0) /* smoothing not changed by user */ - smoothing = video->wfa->wfainfo->smoothing; - if (smoothing > 0 && smoothing <= 100) - { - sframe = clone_image (frame); - smooth_image (smoothing, video->wfa, sframe); - } - else - sframe = NULL; - - stop_timer [0] = prg_timer (&ptimer, STOP); - if (timer) - timer->smooth [video->wfa->frame_type] += stop_timer [0]; - - if (frame_number == video->display) - { - video->display++; - video->frame = frame; - video->sframe = sframe; - frame = NULL; - sframe = NULL; - } - else if (frame_number > video->display) - { - video->future_display = frame_number; - current_frame_is_future_frame = YES; - } + /* + * Depending on current frame type update past and future frames + */ + if (video->wfa->frame_type == I_FRAME) + { + if (video->past) /* discard past frame */ + free_image (video->past); + video->past = NULL; + if (video->future) /* discard future frame */ + free_image (video->future); + video->future = NULL; + if (video->sfuture) /* discard (smoothed) future frame */ + free_image (video->sfuture); + video->sfuture = NULL; + if (video->frame) /* discard current frame */ + free_image (video->frame); + video->frame = NULL; + if (video->sframe) /* discard current (smoothed) frame */ + free_image (video->sframe); + video->sframe = NULL; + } + else if (video->wfa->frame_type == P_FRAME) + { + if (video->past) /* discard past frame */ + free_image (video->past); + video->past = video->frame; /* past <- current frame */ + video->frame = NULL; + if (video->sframe) /* discard current (smoothed) frame */ + free_image (video->sframe); + video->sframe = NULL; + if (store_wfa) + copy_wfa (video->wfa_past, tmp_wfa); + if (video->future) /* discard future frame */ + free_image (video->future); + video->future = NULL; + if (video->sfuture) /* discard (smoothed) future frame */ + free_image (video->sfuture); + video->sfuture = NULL; + } + else /* B_FRAME */ + { + if (current_frame_is_future_frame) + { + if (video->future) /* discard future frame */ + free_image (video->future); + video->future = frame; /* future <- current frame */ + if (video->sfuture) /* discard (smoothed) future frame */ + free_image (video->sfuture); + video->sfuture = sframe; /* future <- current (smoothed) */ + if (store_wfa) + copy_wfa (video->wfa_future, tmp_wfa); + if (video->frame) /* discard current frame */ + free_image (video->frame); + video->frame = NULL; + if (video->sframe) /* discard current (smoothed) frame */ + free_image (video->sframe); + video->sframe = NULL; + frame = NULL; + sframe = NULL; + } + else + { + if (video->wfa->wfainfo->B_as_past_ref == YES) + { + if (video->past) /* discard past frame */ + free_image (video->past); + video->past = video->frame; /* past <- current frame */ + video->frame = NULL; + if (video->sframe) /* discard current (smoothed) frame */ + free_image (video->sframe); + video->sframe = NULL; + if (store_wfa) + copy_wfa (video->wfa_past, tmp_wfa); + } + else + { + if (video->frame) /* discard current */ + free_image (video->frame); + video->frame = NULL; + if (video->sframe) /* discard current (smoothed) frame */ + free_image (video->sframe); + video->sframe = NULL; + } + } + } + if (tmp_wfa) + free_wfa (tmp_wfa); + + current_frame_is_future_frame = NO; + /* + * Second step: decode image + * Optionally enlarge image if specified by option 'enlarge_factor'. + */ + { + unsigned orig_width, orig_height; + + stop_timer [0] = stop_timer [1] = stop_timer [2] = 0; + + enlarge_image (enlarge_factor, format, + (video->wfa->wfainfo->color + && format == FORMAT_4_2_0) + ? video->wfa->tree [video->wfa->tree [video->wfa->root_state][0]][0] : -1, video->wfa); + + if (enlarge_factor > 0) + { + orig_width = video->wfa->wfainfo->width << enlarge_factor; + orig_height = video->wfa->wfainfo->height << enlarge_factor; + } + else + { + orig_width = video->wfa->wfainfo->width >> - enlarge_factor; + orig_height = video->wfa->wfainfo->height >> - enlarge_factor; + if (orig_width & 1) + orig_width++; + if (orig_height & 1) + orig_height++; + } + + frame = decode_image (orig_width, orig_height, format, + timer != NULL ? stop_timer : NULL, + video->wfa); + if (timer) + { + timer->preprocessing [video->wfa->frame_type] += stop_timer [0]; + timer->decoder [video->wfa->frame_type] += stop_timer [1]; + timer->cleanup [video->wfa->frame_type] += stop_timer [2]; + } + } + + /* + * Third step: restore motion compensation + */ + if (video->wfa->frame_type != I_FRAME) + { + prg_timer (&ptimer, START); + restore_mc (enlarge_factor, frame, video->past, video->future, + video->wfa); + stop_timer [0] = prg_timer (&ptimer, STOP); + if (timer) + timer->motion [video->wfa->frame_type] += stop_timer [0]; + } + + /* + * Fourth step: smooth image along partitioning borders + */ + prg_timer (&ptimer, START); + if (smoothing < 0) /* smoothing not changed by user */ + smoothing = video->wfa->wfainfo->smoothing; + if (smoothing > 0 && smoothing <= 100) + { + sframe = clone_image (frame); + smooth_image (smoothing, video->wfa, sframe); + } + else + sframe = NULL; + + stop_timer [0] = prg_timer (&ptimer, STOP); + if (timer) + timer->smooth [video->wfa->frame_type] += stop_timer [0]; + + if (frame_number == video->display) + { + video->display++; + video->frame = frame; + video->sframe = sframe; + frame = NULL; + sframe = NULL; + } + else if (frame_number > video->display) + { + video->future_display = frame_number; + current_frame_is_future_frame = YES; + } - if (!store_wfa) - remove_states (video->wfa->basis_states, video->wfa); + if (!store_wfa) + remove_states (video->wfa->basis_states, video->wfa); } while (!video->frame); if (!store_wfa) - video->wfa = NULL; + video->wfa = NULL; } return video->sframe ? video->sframe : video->frame; @@ -414,7 +415,7 @@ get_next_frame (bool_t store_wfa, int enlarge_factor, image_t * decode_image (unsigned orig_width, unsigned orig_height, format_e format, - unsigned *dec_timer, const wfa_t *wfa) + unsigned *dec_timer, const wfa_t *wfa) /* * Compute image which is represented by the given 'wfa'. * 'orig_width'x'orig_height' gives the resolution of the image at @@ -422,20 +423,20 @@ decode_image (unsigned orig_width, unsigned orig_height, format_e format, * If 'dec_timer' is given, accumulate running time statistics. * * Return value: - * pointer to decoded image + * pointer to decoded image * * Side effects: - * '*dectimer' is changed if 'dectimer' != NULL. + * '*dectimer' is changed if 'dectimer' != NULL. */ { - unsigned root_state [3]; /* root of bintree for each band */ - unsigned width, height; /* computed image size */ - image_t *frame; /* regenerated frame */ - word_t **images; /* pointer to array of pointers - to state images */ - u_word_t *offsets; /* pointer to array of state image - offsets */ - unsigned max_level; /* max. level of state with approx. */ + unsigned root_state [3]; /* root of bintree for each band */ + unsigned width, height; /* computed image size */ + image_t *frame; /* regenerated frame */ + word_t **images; /* pointer to array of pointers + to state images */ + u_word_t *offsets; /* pointer to array of state image + offsets */ + unsigned max_level; /* max. level of state with approx. */ unsigned state; clock_t ptimer; @@ -458,14 +459,14 @@ decode_image (unsigned orig_width, unsigned orig_height, format_e format, */ for (max_level = 0, state = wfa->basis_states; state < wfa->states; state++) if (isedge (wfa->into [state][0][0]) || isedge (wfa->into [state][1][0])) - max_level = max (max_level, wfa->level_of_state [state]); + max_level = max (max_level, wfa->level_of_state [state]); /* * Allocate frame buffer for decoded image */ compute_actual_size (format == FORMAT_4_2_0 ? root_state [Y] : MAXSTATES, - &width, &height, wfa); + &width, &height, wfa); width = max (width, orig_width); height = max (height, orig_height); frame = alloc_image (width, height, wfa->wfainfo->color, format); @@ -480,7 +481,7 @@ decode_image (unsigned orig_width, unsigned orig_height, format_e format, wfa->level_of_state [wfa->tree[wfa->root_state][1]] = 128; } alloc_state_images (&images, &offsets, frame, root_state, 0, max_level, - format, wfa); + format, wfa); if (dec_timer) dec_timer [0] += prg_timer (&ptimer, STOP); @@ -498,38 +499,38 @@ decode_image (unsigned orig_width, unsigned orig_height, format_e format, */ prg_timer (&ptimer, START); free_state_images (max_level, frame->color, images, offsets, root_state, 0, - format, wfa); + format, wfa); /* * Crop decoded image if the image size differs. */ if (orig_width != width || orig_height != height) { - frame->height = orig_height; - frame->width = orig_width; - if (orig_width != width) + frame->height = orig_height; + frame->width = orig_width; + if (orig_width != width) { - color_e band; /* current color band */ - word_t *src, *dst; /* source and destination pointers */ - unsigned y; /* current row */ - - for (band = first_band (frame->color); - band <= last_band (frame->color); band++) - { - src = dst = frame->pixels [band]; - for (y = orig_height; y; y--) - { - memmove (dst, src, orig_width * sizeof (word_t)); - dst += orig_width; - src += width; - } - if (format == FORMAT_4_2_0 && band == Y) - { - orig_width >>= 1; - orig_height >>= 1; - width >>= 1; - } - } + color_e band; /* current color band */ + word_t *src, *dst; /* source and destination pointers */ + unsigned y; /* current row */ + + for (band = first_band (frame->color); + band <= last_band (frame->color); band++) + { + src = dst = frame->pixels [band]; + for (y = orig_height; y; y--) + { + memmove (dst, src, orig_width * sizeof (word_t)); + dst += orig_width; + src += width; + } + if (format == FORMAT_4_2_0 && band == Y) + { + orig_width >>= 1; + orig_height >>= 1; + width >>= 1; + } + } } } if (dec_timer) @@ -544,10 +545,10 @@ decode_state (unsigned state, unsigned level, wfa_t *wfa) * Decode 'state' image of 'wfa' at given 'level'. * * Return value. - * pointer to decoded state image + * pointer to decoded state image * * Side effects: - * 'wfa' states > 'state' are removed. + * 'wfa' states > 'state' are removed. */ { word_t *domains [2]; @@ -571,15 +572,15 @@ decode_state (unsigned state, unsigned level, wfa_t *wfa) */ { word_t *src, *dst; - unsigned y; - + unsigned y; + src = domains [0]; dst = img->pixels [GRAY]; for (y = img->height; y; y--) { - memcpy (dst, src, width_of_level (level) * sizeof (word_t)); - src += width_of_level (level); - dst += img->width; + memcpy (dst, src, width_of_level (level) * sizeof (word_t)); + src += width_of_level (level); + dst += img->width; } Free (domains [0]); } @@ -589,87 +590,87 @@ decode_state (unsigned state, unsigned level, wfa_t *wfa) word_t * decode_range (unsigned range_state, unsigned range_label, unsigned range_level, - word_t **domain, wfa_t *wfa) + word_t **domain, wfa_t *wfa) /* * Compute 'wfa' image of range (identified by 'state' and 'label') * at 'range_level (works as function decode_image()). * * Return value: - * pointer to the pixels in SHORT format + * pointer to the pixels in SHORT format * * Side effects: - * if 'domain' != NULL then also the domain blocks - * of the corresponding range blocks are generated + * if 'domain' != NULL then also the domain blocks + * of the corresponding range blocks are generated * and returned in domain[] - * 'wfa->level_of_state []' is changed + * 'wfa->level_of_state []' is changed */ { - unsigned root_state [3]; /* dummy (for alloc_state_images) */ - image_t *state_image; /* regenerated state image */ - word_t **images; /* pointer to array of pointers - to state images */ - u_word_t *offsets; /* pointer to array of state image - offsets */ + unsigned root_state [3]; /* dummy (for alloc_state_images) */ + image_t *state_image; /* regenerated state image */ + word_t **images; /* pointer to array of pointers + to state images */ + u_word_t *offsets; /* pointer to array of state image + offsets */ word_t *range; enlarge_image (range_level - (wfa->level_of_state [range_state] - 1), - FORMAT_4_4_4, -1, wfa); + FORMAT_4_4_4, -1, wfa); root_state [0] = range_state; state_image = alloc_image (width_of_level (range_level + 1), - height_of_level (range_level + 1), - NO, FORMAT_4_4_4); + height_of_level (range_level + 1), + NO, FORMAT_4_4_4); alloc_state_images (&images, &offsets, state_image, NULL, range_state, - range_level + 1, NO, wfa); + range_level + 1, NO, wfa); compute_state_images (range_level + 1, images, offsets, wfa); range = Calloc (size_of_level (range_level), sizeof (word_t)); - if ((range_level & 1) == 0) /* square image */ + if ((range_level & 1) == 0) /* square image */ { memcpy (range, - images [range_state + (range_level + 1) * wfa->states] - + range_label * size_of_level (range_level), - size_of_level (range_level) * sizeof (word_t)); + images [range_state + (range_level + 1) * wfa->states] + + range_label * size_of_level (range_level), + size_of_level (range_level) * sizeof (word_t)); } - else /* rectangle */ + else /* rectangle */ { word_t *src, *dst; unsigned y; src = images [range_state + (range_level + 1) * wfa->states] - + range_label * width_of_level (range_level); + + range_label * width_of_level (range_level); dst = range; for (y = height_of_level (range_level); y; y--) { - memcpy (dst, src, width_of_level (range_level) * sizeof (word_t)); - dst += width_of_level (range_level); - src += width_of_level (range_level + 1); + memcpy (dst, src, width_of_level (range_level) * sizeof (word_t)); + dst += width_of_level (range_level); + src += width_of_level (range_level + 1); } } - if (domain != NULL) /* copy domain images */ + if (domain != NULL) /* copy domain images */ { - int s; /* domain state */ - unsigned edge; /* counter */ - + int s; /* domain state */ + unsigned edge; /* counter */ + if (ischild (s = wfa->tree [range_state][range_label])) - *domain++ = duplicate_state_image (images [s + (range_level) - * wfa->states], - offsets [s + (range_level) - * wfa->states], - range_level); + *domain++ = duplicate_state_image (images [s + (range_level) + * wfa->states], + offsets [s + (range_level) + * wfa->states], + range_level); for (edge = 0; isedge (s = wfa->into[range_state][range_label][edge]); - edge++) - *domain++ = duplicate_state_image (images [s + (range_level) - * wfa->states], - offsets [s + (range_level) - * wfa->states], - range_level); + edge++) + *domain++ = duplicate_state_image (images [s + (range_level) + * wfa->states], + offsets [s + (range_level) + * wfa->states], + range_level); *domain = NULL; } free_state_images (range_level + 1, NO, images, offsets, NULL, range_state, - NO, wfa); + NO, wfa); free_image (state_image); return range; @@ -684,102 +685,102 @@ smooth_image (unsigned sf, const wfa_t *wfa, image_t *image) * No return value. * * Side effects: - * pixel values of the 'image' are modified with respect to 's' + * pixel values of the 'image' are modified with respect to 's' */ { - int is, inegs; /* integer factors of s and 1 - s*/ - unsigned state; + int is, inegs; /* integer factors of s and 1 - s*/ + unsigned state; unsigned img_width = image->width; unsigned img_height = image->height; - real_t s = 1.0 - sf / 200.0; + real_t s = 1.0 - sf / 200.0; - if (s < 0.5 || s >= 1) /* value out of range */ + if (s < 0.5 || s >= 1) /* value out of range */ return; - is = s * 512 + .5; /* integer representation of s */ - inegs = (1 - s) * 512 + .5; /* integer representation of 1 - s */ + is = s * 512 + .5; /* integer representation of s */ + inegs = (1 - s) * 512 + .5; /* integer representation of 1 - s */ for (state = wfa->basis_states; - state < (wfa->wfainfo->color - ? wfa->tree [wfa->root_state][0] - : wfa->states); state++) + state < (wfa->wfainfo->color + ? wfa->tree [wfa->root_state][0] + : wfa->states); state++) { word_t *bptr = image->pixels [Y]; /* pointer to right or - lower line */ + lower line */ unsigned level = wfa->level_of_state[state]; /* level of state image */ unsigned width = width_of_level (level); /* size of state image */ unsigned height = height_of_level (level); /* size of state image */ if (wfa->y [state][1] >= img_height || wfa->x [state][1] >= img_width) - continue; /* outside visible area */ - - if (level % 2) /* horizontal smoothing */ + continue; /* outside visible area */ + + if (level % 2) /* horizontal smoothing */ { - unsigned i; /* line counter */ - word_t *img1; /* pointer to left or upper line */ - word_t *img2; /* pointer to right or lower line */ - - img1 = bptr + (wfa->y [state][1] - 1) * img_width - + wfa->x [state][1]; - img2 = bptr + wfa->y [state][1] * img_width + wfa->x [state][1]; - - for (i = min (width, img_width - wfa->x [state][1]); i; - i--, img1++, img2++) - { - int tmp = *img1; - + unsigned i; /* line counter */ + word_t *img1; /* pointer to left or upper line */ + word_t *img2; /* pointer to right or lower line */ + + img1 = bptr + (wfa->y [state][1] - 1) * img_width + + wfa->x [state][1]; + img2 = bptr + wfa->y [state][1] * img_width + wfa->x [state][1]; + + for (i = min (width, img_width - wfa->x [state][1]); i; + i--, img1++, img2++) + { + int tmp = *img1; + #ifdef HAVE_SIGNED_SHIFT - *img1 = (((is * tmp) >> 10) << 1) - + (((inegs * (int) *img2) >> 10) << 1); - *img2 = (((is * (int) *img2) >> 10) << 1) - + (((inegs * tmp) >> 10) << 1); + *img1 = (((is * tmp) >> 10) << 1) + + (((inegs * (int) *img2) >> 10) << 1); + *img2 = (((is * (int) *img2) >> 10) << 1) + + (((inegs * tmp) >> 10) << 1); #else /* not HAVE_SIGNED_SHIFT */ - *img1 = (((is * tmp) / 1024) * 2) - + (((inegs * (int) *img2) / 1024) * 2); - *img2 = (((is * (int) *img2) / 1024) * 2) - + (((inegs * tmp) / 1024) *2); + *img1 = (((is * tmp) / 1024) * 2) + + (((inegs * (int) *img2) / 1024) * 2); + *img2 = (((is * (int) *img2) / 1024) * 2) + + (((inegs * tmp) / 1024) *2); #endif /* not HAVE_SIGNED_SHIFT */ - } + } } - else /* vertical smoothing */ + else /* vertical smoothing */ { - unsigned i; /* line counter */ - word_t *img1; /* pointer to left or upper line */ - word_t *img2; /* pointer to right or lower line */ - - img1 = bptr + wfa->y [state][1] * img_width + wfa->x [state][1] - 1; - img2 = bptr + wfa->y [state][1] * img_width + wfa->x [state][1]; - - for (i = min (height, img_height - wfa->y [state][1]); i; - i--, img1 += img_width, img2 += img_width) - { - int tmp = *img1; - + unsigned i; /* line counter */ + word_t *img1; /* pointer to left or upper line */ + word_t *img2; /* pointer to right or lower line */ + + img1 = bptr + wfa->y [state][1] * img_width + wfa->x [state][1] - 1; + img2 = bptr + wfa->y [state][1] * img_width + wfa->x [state][1]; + + for (i = min (height, img_height - wfa->y [state][1]); i; + i--, img1 += img_width, img2 += img_width) + { + int tmp = *img1; + #ifdef HAVE_SIGNED_SHIFT - *img1 = (((is * tmp) >> 10) << 1) - + (((inegs * (int) *img2) >> 10) << 1); - *img2 = (((is * (int) *img2) >> 10) << 1) - + (((inegs * tmp) >> 10) << 1); + *img1 = (((is * tmp) >> 10) << 1) + + (((inegs * (int) *img2) >> 10) << 1); + *img2 = (((is * (int) *img2) >> 10) << 1) + + (((inegs * tmp) >> 10) << 1); #else /* not HAVE_SIGNED_SHIFT */ - *img1 = (((is * tmp) / 1024) * 2) - + (((inegs * (int) *img2) / 1024) * 2); - *img2 = (((is * (int) *img2) / 1024) * 2) - + (((inegs * tmp) / 1024) *2); + *img1 = (((is * tmp) / 1024) * 2) + + (((inegs * (int) *img2) / 1024) * 2); + *img2 = (((is * (int) *img2) / 1024) * 2) + + (((inegs * tmp) / 1024) *2); #endif /* not HAVE_SIGNED_SHIFT */ - } + } } } } /***************************************************************************** - private code + private code *****************************************************************************/ static void enlarge_image (int enlarge_factor, format_e format, unsigned y_root, - wfa_t *wfa) + wfa_t *wfa) /* * Enlarge or reduce size of state images by factor 2^'enlarge_factor'. * Use 4:2:0 subsampling if specified by 'format', else use 4:4:4 format. @@ -788,8 +789,8 @@ enlarge_image (int enlarge_factor, format_e format, unsigned y_root, * No return value. * * Side effects: - * coordinates of ranges and motion blocks in the WFA structure 'wfa' - * are modified. + * coordinates of ranges and motion blocks in the WFA structure 'wfa' + * are modified. */ { @@ -799,53 +800,53 @@ enlarge_image (int enlarge_factor, format_e format, unsigned y_root, if (enlarge_factor == 0) { - state = y_root + 1; - enlarge_factor = -1; + state = y_root + 1; + enlarge_factor = -1; } else - state = wfa->basis_states; + state = wfa->basis_states; for (; state < wfa->states; state++) { - unsigned label, n; - - wfa->level_of_state [state] - = max (wfa->level_of_state [state] + enlarge_factor * 2, 0); - - for (label = 0; label < MAXLABELS; label++) - if (enlarge_factor > 0) - { - wfa->x [state][label] <<= enlarge_factor; - wfa->y [state][label] <<= enlarge_factor; - for (n = enlarge_factor; n; n--) - { - wfa->mv_tree [state][label].fx *= 2; - wfa->mv_tree [state][label].fy *= 2; - wfa->mv_tree [state][label].bx *= 2; - wfa->mv_tree [state][label].by *= 2; - } - } - else /* enlarge_factor < 0 */ - { - wfa->x [state][label] >>= - enlarge_factor; - wfa->y [state][label] >>= - enlarge_factor; - for (n = - enlarge_factor; n; n--) - { - wfa->mv_tree [state][label].fx /= 2; - wfa->mv_tree [state][label].fy /= 2; - wfa->mv_tree [state][label].bx /= 2; - wfa->mv_tree [state][label].by /= 2; - } - } - if (format == FORMAT_4_2_0 && state == y_root) - enlarge_factor--; + unsigned label, n; + + wfa->level_of_state [state] + = max (wfa->level_of_state [state] + enlarge_factor * 2, 0); + + for (label = 0; label < MAXLABELS; label++) + if (enlarge_factor > 0) + { + wfa->x [state][label] <<= enlarge_factor; + wfa->y [state][label] <<= enlarge_factor; + for (n = enlarge_factor; n; n--) + { + wfa->mv_tree [state][label].fx *= 2; + wfa->mv_tree [state][label].fy *= 2; + wfa->mv_tree [state][label].bx *= 2; + wfa->mv_tree [state][label].by *= 2; + } + } + else /* enlarge_factor < 0 */ + { + wfa->x [state][label] >>= - enlarge_factor; + wfa->y [state][label] >>= - enlarge_factor; + for (n = - enlarge_factor; n; n--) + { + wfa->mv_tree [state][label].fx /= 2; + wfa->mv_tree [state][label].fy /= 2; + wfa->mv_tree [state][label].bx /= 2; + wfa->mv_tree [state][label].by /= 2; + } + } + if (format == FORMAT_4_2_0 && state == y_root) + enlarge_factor--; } } } static void compute_actual_size (unsigned luminance_root, - unsigned *width, unsigned *height, const wfa_t *wfa) + unsigned *width, unsigned *height, const wfa_t *wfa) /* * Compute actual size of the frame represented by the given 'wfa'. * (The reconstructed frame may get larger than the original due @@ -853,24 +854,24 @@ compute_actual_size (unsigned luminance_root, * If 'luminance_root' < MAXSTATES then the size of chroma ranges (4:2:0). * * Return values: - * actual 'width' and 'height' of the decoded frame. + * actual 'width' and 'height' of the decoded frame. */ { - unsigned x = 0, y = 0; /* maximum coordinates */ - unsigned state; /* counter */ + unsigned x = 0, y = 0; /* maximum coordinates */ + unsigned state; /* counter */ for (state = wfa->basis_states; state < wfa->states; state++) if (isedge (wfa->into [state][0][0]) || isedge (wfa->into [state][1][0])) { - unsigned mult = state > luminance_root ? 2 : 1; - - x = max ((wfa->x [state][0] - + width_of_level (wfa->level_of_state [state])) * mult, x); - y = max ((wfa->y [state][0] - + height_of_level (wfa->level_of_state [state])) * mult, y); + unsigned mult = state > luminance_root ? 2 : 1; + + x = max ((wfa->x [state][0] + + width_of_level (wfa->level_of_state [state])) * mult, x); + y = max ((wfa->y [state][0] + + height_of_level (wfa->level_of_state [state])) * mult, y); } - if (x & 1) /* ensure that image size is even */ + if (x & 1) /* ensure that image size is even */ x++; if (y & 1) y++; @@ -880,8 +881,8 @@ compute_actual_size (unsigned luminance_root, static void alloc_state_images (word_t ***images, u_word_t **offsets, const image_t *frame, - const unsigned *root_state, unsigned range_state, - unsigned max_level, format_e format, const wfa_t *wfa) + const unsigned *root_state, unsigned range_state, + unsigned max_level, format_e format, const wfa_t *wfa) /* * Generate list of 'wfa' state images which have to be computed for * each level to obtain the decoded 'frame'. 'root_state[]' denotes the @@ -893,24 +894,24 @@ alloc_state_images (word_t ***images, u_word_t **offsets, const image_t *frame, * image of 'wfa->root_state'. * * Return values: - * '*images' Pointer to array of state image pointers - * '*offsets' Pointer to array of state image offsets. + * '*images' Pointer to array of state image pointers + * '*offsets' Pointer to array of state image offsets. * * Side effects: - * The arrays given above are filled with useful values. + * The arrays given above are filled with useful values. */ { - word_t **simg; /* ptr to list of state image ptr's */ - u_word_t *offs; /* ptr to list of offsets */ - unsigned level; /* counter */ + word_t **simg; /* ptr to list of state image ptr's */ + u_word_t *offs; /* ptr to list of offsets */ + unsigned level; /* counter */ - simg = Calloc (wfa->states * (max_level + 1), sizeof (word_t *)); - offs = Calloc (wfa->states * (max_level + 1), sizeof (u_word_t)); + simg = Calloc (wfa->states * (max_level + 1), sizeof (word_t *)); + offs = Calloc (wfa->states * (max_level + 1), sizeof (u_word_t)); /* * Initialize buffers for those state images which are at 'max_level'. */ - if (range_state > 0) /* a range is given */ + if (range_state > 0) /* a range is given */ { simg [range_state + max_level * wfa->states] = frame->pixels [GRAY]; offs [range_state + max_level * wfa->states] = frame->width; @@ -920,25 +921,25 @@ alloc_state_images (word_t ***images, u_word_t **offsets, const image_t *frame, unsigned state; for (state = wfa->basis_states; state <= root_state [Y]; state++) - if (wfa->level_of_state [state] == max_level) - { - simg [state + max_level * wfa->states] - = (frame->pixels [Y] + wfa->y [state][0] * frame->width - + wfa->x [state][0]); - offs [state + max_level * wfa->states] = frame->width; - } + if (wfa->level_of_state [state] == max_level) + { + simg [state + max_level * wfa->states] + = (frame->pixels [Y] + wfa->y [state][0] * frame->width + + wfa->x [state][0]); + offs [state + max_level * wfa->states] = frame->width; + } if (frame->color) { - unsigned width = format == FORMAT_4_2_0 ? - (frame->width >> 1) : frame->width; - for (; state < wfa->states; state++) - if (wfa->level_of_state [state] == max_level) - { - simg [state + max_level * wfa->states] - = (frame->pixels [state > root_state [Cb] ? Cr : Cb] - + wfa->y [state][0] * width + wfa->x [state][0]); - offs [state + max_level * wfa->states] = width; - } + unsigned width = format == FORMAT_4_2_0 ? + (frame->width >> 1) : frame->width; + for (; state < wfa->states; state++) + if (wfa->level_of_state [state] == max_level) + { + simg [state + max_level * wfa->states] + = (frame->pixels [state > root_state [Cb] ? Cr : Cb] + + wfa->y [state][0] * width + wfa->x [state][0]); + offs [state + max_level * wfa->states] = width; + } } } @@ -954,63 +955,63 @@ alloc_state_images (word_t ***images, u_word_t **offsets, const image_t *frame, * Range approximation with child. */ for (state = 1; state < (range_state > 0 ? - range_state + 1 : wfa->states); state++) - if (simg [state + level * wfa->states]) - for (label = 0; label < MAXLABELS; label++) - if (ischild (child = wfa->tree[state][label])) - { - if (isedge (wfa->into[state][label][0])) - { - /* - * Allocate new image block. - */ - simg [child + (level - 1) * wfa->states] - = Calloc (size_of_level (level - 1), sizeof (word_t)); - offs [child + (level - 1) * wfa->states] - = width_of_level (level - 1); - } - else - { - /* - * Use image block and offset of parent. - */ - if (level & 1) /* split vertically */ - { - simg [child + (level - 1) * wfa->states] - = (simg [state + level * wfa->states] - + label * (height_of_level (level - 1) - * offs [state - + level * wfa->states])); - } - else /* split horizontally */ - { - simg [child + (level - 1) * wfa->states] - = (simg [state + level * wfa->states] - + label * width_of_level (level - 1)); - } - offs [child + (level - 1) * wfa->states] - = offs [state + level * wfa->states]; - } - } + range_state + 1 : wfa->states); state++) + if (simg [state + level * wfa->states]) + for (label = 0; label < MAXLABELS; label++) + if (ischild (child = wfa->tree[state][label])) + { + if (isedge (wfa->into[state][label][0])) + { + /* + * Allocate new image block. + */ + simg [child + (level - 1) * wfa->states] + = Calloc (size_of_level (level - 1), sizeof (word_t)); + offs [child + (level - 1) * wfa->states] + = width_of_level (level - 1); + } + else + { + /* + * Use image block and offset of parent. + */ + if (level & 1) /* split vertically */ + { + simg [child + (level - 1) * wfa->states] + = (simg [state + level * wfa->states] + + label * (height_of_level (level - 1) + * offs [state + + level * wfa->states])); + } + else /* split horizontally */ + { + simg [child + (level - 1) * wfa->states] + = (simg [state + level * wfa->states] + + label * width_of_level (level - 1)); + } + offs [child + (level - 1) * wfa->states] + = offs [state + level * wfa->states]; + } + } /* * Range approximation with linear combination */ for (state = 1; state < (range_state > 0 ? - range_state + 1 : wfa->states); state++) - if (simg [state + level * wfa->states]) - for (label = 0; label < MAXLABELS; label++) - for (edge = 0; isedge (domain = wfa->into[state][label][edge]); - edge++) - { - if (domain > 0 /* don't allocate memory for state 0 */ - && !simg [domain + (level - 1) * wfa->states]) - { - simg [domain + (level - 1) * wfa->states] - = Calloc (size_of_level (level - 1), sizeof (word_t)); - offs [domain + (level - 1) * wfa->states] - = width_of_level (level - 1); - } - } + range_state + 1 : wfa->states); state++) + if (simg [state + level * wfa->states]) + for (label = 0; label < MAXLABELS; label++) + for (edge = 0; isedge (domain = wfa->into[state][label][edge]); + edge++) + { + if (domain > 0 /* don't allocate memory for state 0 */ + && !simg [domain + (level - 1) * wfa->states]) + { + simg [domain + (level - 1) * wfa->states] + = Calloc (size_of_level (level - 1), sizeof (word_t)); + offs [domain + (level - 1) * wfa->states] + = width_of_level (level - 1); + } + } } @@ -1020,8 +1021,8 @@ alloc_state_images (word_t ***images, u_word_t **offsets, const image_t *frame, static void free_state_images (unsigned max_level, bool_t color, word_t **state_image, - u_word_t *offset, const unsigned *root_state, - unsigned range_state, format_e format, const wfa_t *wfa) + u_word_t *offset, const unsigned *root_state, + unsigned range_state, format_e format, const wfa_t *wfa) /* * Free memory of state images. * For more details refer to the inverse function 'alloc_state_images()'. @@ -1029,10 +1030,10 @@ free_state_images (unsigned max_level, bool_t color, word_t **state_image, * No return value. * * Side effects: - * arrays 'state_image' and 'offset' are discarded. + * arrays 'state_image' and 'offset' are discarded. */ { - word_t marker; /* ptr is required as a marker */ + word_t marker; /* ptr is required as a marker */ unsigned level; if (range_state > 0) @@ -1047,19 +1048,19 @@ free_state_images (unsigned max_level, bool_t color, word_t **state_image, * Initialize state image array with states at 'max_level' */ for (state = wfa->basis_states; state <= root_state [Y]; state++) - if (wfa->level_of_state [state] == max_level) - state_image [state + max_level * wfa->states] = ▮ + if (wfa->level_of_state [state] == max_level) + state_image [state + max_level * wfa->states] = ▮ if (color) { - if (format == FORMAT_4_2_0) - level = max_level - 2; - else - level = max_level; + if (format == FORMAT_4_2_0) + level = max_level - 2; + else + level = max_level; - for (; state < wfa->states; state++) - if (wfa->level_of_state [state] == level) - state_image [state + level * wfa->states] = ▮ + for (; state < wfa->states; state++) + if (wfa->level_of_state [state] == level) + state_image [state + level * wfa->states] = ▮ } } @@ -1071,37 +1072,37 @@ free_state_images (unsigned max_level, bool_t color, word_t **state_image, * Range approximation with child. */ for (state = 1; state < (range_state > 0 ? - range_state + 1 : wfa->states); state++) - if (state_image [state + level * wfa->states]) - for (label = 0; label < MAXLABELS; label++) - if (ischild (child = wfa->tree[state][label])) - { - if (isedge (wfa->into[state][label][0]) - && (state_image [child + (level - 1) * wfa->states] - != &marker)) - Free (state_image [child + (level - 1) * wfa->states]); - state_image [child + (level - 1) * wfa->states] = ▮ - } + range_state + 1 : wfa->states); state++) + if (state_image [state + level * wfa->states]) + for (label = 0; label < MAXLABELS; label++) + if (ischild (child = wfa->tree[state][label])) + { + if (isedge (wfa->into[state][label][0]) + && (state_image [child + (level - 1) * wfa->states] + != &marker)) + Free (state_image [child + (level - 1) * wfa->states]); + state_image [child + (level - 1) * wfa->states] = ▮ + } /* * Range approximation with linear combination */ for (state = 1; state < (range_state > 0 ? - range_state + 1 : wfa->states); - state++) - if (state_image [state + level * wfa->states]) - for (label = 0; label < MAXLABELS; label++) - for (edge = 0; isedge (domain = wfa->into[state][label][edge]); - edge++) - if (domain > 0 - && (state_image [domain + (level - 1) * wfa->states] - != NULL) - && (state_image [domain + (level - 1) * wfa->states] - != &marker)) - { - Free (state_image [domain + (level - 1) * wfa->states]); - state_image [domain + (level - 1) * wfa->states] - = ▮ - } + range_state + 1 : wfa->states); + state++) + if (state_image [state + level * wfa->states]) + for (label = 0; label < MAXLABELS; label++) + for (edge = 0; isedge (domain = wfa->into[state][label][edge]); + edge++) + if (domain > 0 + && (state_image [domain + (level - 1) * wfa->states] + != NULL) + && (state_image [domain + (level - 1) * wfa->states] + != &marker)) + { + Free (state_image [domain + (level - 1) * wfa->states]); + state_image [domain + (level - 1) * wfa->states] + = ▮ + } } Free (state_image); Free (offset); @@ -1109,7 +1110,7 @@ free_state_images (unsigned max_level, bool_t color, word_t **state_image, static void compute_state_images (unsigned max_level, word_t **simg, - const u_word_t *offset, const wfa_t *wfa) + const u_word_t *offset, const wfa_t *wfa) /* * Compute all state images of the 'wfa' at level {1, ... , 'max_level'} * which are marked in the array 'simg' (offsets of state images @@ -1121,8 +1122,8 @@ compute_state_images (unsigned max_level, word_t **simg, * No return value. * * Side effects: - * state images (given by pointers in the array 'state_image') - * are computed. + * state images (given by pointers in the array 'state_image') + * are computed. */ { unsigned level, state; @@ -1132,8 +1133,8 @@ compute_state_images (unsigned max_level, word_t **simg, */ for (state = 1; state < wfa->states; state++) - if (simg [state] != NULL) /* compute image at level 0 */ - *simg [state] = (int) (wfa->final_distribution[state] * 8 + .5) * 2; + if (simg [state] != NULL) /* compute image at level 0 */ + *simg [state] = (int) (wfa->final_distribution[state] * 8 + .5) * 2; /* * Compute images of states @@ -1153,351 +1154,351 @@ compute_state_images (unsigned max_level, word_t **simg, unsigned height = height_of_level (level - 1); for (state = 1; state < wfa->states; state++) - if (simg [state + level * wfa->states] != NULL) - for (label = 0; label < MAXLABELS; label++) - if (isedge (wfa->into [state][label][0])) - { - unsigned edge; - int domain; - word_t *range; /* address of current range */ - bool_t prediction_used; /* ND prediction found ? */ - - /* - * Compute address of range image - */ - if (level & 1) /* split vertically */ - { - range = simg [state + level * wfa->states] - + label * (height_of_level (level - 1) - * offset [state - + level * wfa->states]); - } - else /* split horizontally */ - { - range = simg [state + level * wfa->states] - + label * width_of_level (level - 1); - } - - /* - * Generate the state images by adding the corresponding - * weighted state images: - * subimage [label] = - * weight_1 * image_1 + ... + weight_n * image_n - */ - if (!ischild (domain = wfa->tree[state][label])) - prediction_used = NO; - else - { - unsigned y; - word_t *src; - word_t *dst; - unsigned src_offset; - unsigned dst_offset; - - prediction_used = YES; - /* - * Copy child image - */ - src = simg [domain + (level - 1) * wfa->states]; - src_offset = offset [domain + (level - 1) * wfa->states] ; - dst = range; - dst_offset = offset [state + level * wfa->states]; - for (y = height; y; y--) - { - memcpy (dst, src, width * sizeof (word_t)); - src += src_offset; - dst += dst_offset; - } - } - - if (!prediction_used - && isedge (domain = wfa->into[state][label][0])) - { - /* - * If prediction is not used then the range is - * filled with the first domain. No addition is needed. - */ - edge = 0; - if (domain != 0) - { - int weight; - word_t *src; - unsigned src_offset; - - src = simg [domain + ((level - 1) - * wfa->states)]; - src_offset = offset [domain + ((level - 1) - * wfa->states)] - width; - weight = wfa->int_weight [state][label][edge]; - - if (width == 1) /* can't add two-pixels in a row */ - { - word_t *dst; - unsigned dst_offset; - - dst = range; - dst_offset = offset [state + level * wfa->states] - - width; + if (simg [state + level * wfa->states] != NULL) + for (label = 0; label < MAXLABELS; label++) + if (isedge (wfa->into [state][label][0])) + { + unsigned edge; + int domain; + word_t *range; /* address of current range */ + bool_t prediction_used; /* ND prediction found ? */ + + /* + * Compute address of range image + */ + if (level & 1) /* split vertically */ + { + range = simg [state + level * wfa->states] + + label * (height_of_level (level - 1) + * offset [state + + level * wfa->states]); + } + else /* split horizontally */ + { + range = simg [state + level * wfa->states] + + label * width_of_level (level - 1); + } + + /* + * Generate the state images by adding the corresponding + * weighted state images: + * subimage [label] = + * weight_1 * image_1 + ... + weight_n * image_n + */ + if (!ischild (domain = wfa->tree[state][label])) + prediction_used = NO; + else + { + unsigned y; + word_t *src; + word_t *dst; + unsigned src_offset; + unsigned dst_offset; + + prediction_used = YES; + /* + * Copy child image + */ + src = simg [domain + (level - 1) * wfa->states]; + src_offset = offset [domain + (level - 1) * wfa->states] ; + dst = range; + dst_offset = offset [state + level * wfa->states]; + for (y = height; y; y--) + { + memcpy (dst, src, width * sizeof (word_t)); + src += src_offset; + dst += dst_offset; + } + } + + if (!prediction_used + && isedge (domain = wfa->into[state][label][0])) + { + /* + * If prediction is not used then the range is + * filled with the first domain. No addition is needed. + */ + edge = 0; + if (domain != 0) + { + int weight; + word_t *src; + unsigned src_offset; + + src = simg [domain + ((level - 1) + * wfa->states)]; + src_offset = offset [domain + ((level - 1) + * wfa->states)] - width; + weight = wfa->int_weight [state][label][edge]; + + if (width == 1) /* can't add two-pixels in a row */ + { + word_t *dst; + unsigned dst_offset; + + dst = range; + dst_offset = offset [state + level * wfa->states] + - width; #ifdef HAVE_SIGNED_SHIFT - *dst++ = ((weight * (int) *src++) >> 10) << 1; -#else /* not HAVE_SIGNED_SHIFT */ - *dst++ = ((weight * (int) *src++) / 1024) * 2; + *dst++ = ((weight * (int) *src++) >> 10) << 1; +#else /* not HAVE_SIGNED_SHIFT */ + *dst++ = ((weight * (int) *src++) / 1024) * 2; #endif /* not HAVE_SIGNED_SHIFT */ - if (height == 2) - { - src += src_offset; - dst += dst_offset; + if (height == 2) + { + src += src_offset; + dst += dst_offset; #ifdef HAVE_SIGNED_SHIFT - *dst++ = ((weight * (int) *src++) >> 10) << 1; + *dst++ = ((weight * (int) *src++) >> 10) << 1; #else /* not HAVE_SIGNED_SHIFT */ - *dst++ = ((weight * (int) *src++) / 1024) * 2; + *dst++ = ((weight * (int) *src++) / 1024) * 2; #endif /* not HAVE_SIGNED_SHIFT */ - } - } - else - { - unsigned y; - int *idst; - unsigned idst_offset; - - idst = (int *) range; - idst_offset = (offset [state + level * wfa->states] - - width) / 2; - for (y = height; y; y--) - { - int *comp_dst = idst + (width >> 1); - - for (; idst != comp_dst; ) - { - int tmp; /* temp. value of adjacent pixels */ + } + } + else + { + unsigned y; + int *idst; + unsigned idst_offset; + + idst = (int *) range; + idst_offset = (offset [state + level * wfa->states] + - width) / 2; + for (y = height; y; y--) + { + int *comp_dst = idst + (width >> 1); + + for (; idst != comp_dst; ) + { + int tmp; /* temp. value of adjacent pixels */ #ifdef HAVE_SIGNED_SHIFT -# ifndef WORDS_BIGENDIAN - tmp = (((weight * (int) src [1]) >> 10) << 17) - | (((weight * (int) src [0]) >> 9) - & 0xfffe); -# else /* not WORDS_BIGENDIAN */ - tmp = (((weight * (int) src [0]) >> 10) << 17) - | (((weight * (int) src [1]) >> 9) - & 0xfffe); -# endif /* not WORDS_BIGENDIAN */ +# if BYTE_ORDER == LITTLE_ENDIAN + tmp = (((weight * (int) src [1]) >> 10) << 17) + | (((weight * (int) src [0]) >> 9) + & 0xfffe); +# else + tmp = (((weight * (int) src [0]) >> 10) << 17) + | (((weight * (int) src [1]) >> 9) + & 0xfffe); +# endif #else /* not HAVE_SIGNED_SHIFT */ -# ifndef WORDS_BIGENDIAN - tmp = (((weight * (int) src [1]) / 1024) - * 131072) - | (((weight * (int) src [0])/ 512) - & 0xfffe); -# else /* not WORDS_BIGENDIAN */ - tmp = (((weight * (int) src [0]) / 1024) - * 131072) - | (((weight * (int) src [1]) / 512) - & 0xfffe); -# endif /* not WORDS_BIGENDIAN */ +# if BYTE_ORDER == LITTLE_ENDIAN + tmp = (((weight * (int) src [1]) / 1024) + * 131072) + | (((weight * (int) src [0])/ 512) + & 0xfffe); +# else + tmp = (((weight * (int) src [0]) / 1024) + * 131072) + | (((weight * (int) src [1]) / 512) + & 0xfffe); +# endif #endif /* not HAVE_SIGNED_SHIFT */ - src += 2; - *idst++ = tmp & 0xfffefffe; - } - src += src_offset; - idst += idst_offset; - } - } - } - else - { - int weight = (int) (wfa->weight[state][label][edge] - * wfa->final_distribution[0] - * 8 + .5) * 2; - /* - * Range needs domain 0 - * (the constant function f(x, y) = 1), - * hence a faster algorithm is used. - */ - if (width == 1) /* can't add two-pixels in a row */ - { - word_t *dst; - unsigned dst_offset; - - dst = range; - dst_offset = offset [state + level * wfa->states] - - width; - - *dst++ = weight; - if (height == 2) - { - dst += dst_offset; - *dst++ = weight; - } - } - else - { - unsigned x, y; - int *idst; - unsigned idst_offset; - - weight = (weight * 65536) | (weight & 0xffff); - idst = (int *) range; - idst_offset = offset [state + level * wfa->states] - / 2; - for (x = width >> 1; x; x--) - *idst++ = weight & 0xfffefffe; - idst += (offset [state + level * wfa->states] - - width) / 2; - - for (y = height - 1; y; y--) - { - memcpy (idst, idst - idst_offset, - width * sizeof (word_t)); - idst += idst_offset; - } - } - } - edge = 1; - } - else - edge = 0; - - /* - * Add remaining weighted domain images to current range - */ - for (; isedge (domain = wfa->into[state][label][edge]); - edge++) - { - if (domain != 0) - { - word_t *src; - unsigned src_offset; - int weight; - - src = simg [domain + (level - 1) * wfa->states]; - src_offset = offset [domain + ((level - 1) - * wfa->states)] - width; - weight = wfa->int_weight [state][label][edge]; - - if (width == 1) /* can't add two-pixels in a row */ - { - word_t *dst; - unsigned dst_offset; - - dst = range; - dst_offset = offset [state + level * wfa->states] - - width; + src += 2; + *idst++ = tmp & 0xfffefffe; + } + src += src_offset; + idst += idst_offset; + } + } + } + else + { + int weight = (int) (wfa->weight[state][label][edge] + * wfa->final_distribution[0] + * 8 + .5) * 2; + /* + * Range needs domain 0 + * (the constant function f(x, y) = 1), + * hence a faster algorithm is used. + */ + if (width == 1) /* can't add two-pixels in a row */ + { + word_t *dst; + unsigned dst_offset; + + dst = range; + dst_offset = offset [state + level * wfa->states] + - width; + + *dst++ = weight; + if (height == 2) + { + dst += dst_offset; + *dst++ = weight; + } + } + else + { + unsigned x, y; + int *idst; + unsigned idst_offset; + + weight = (weight * 65536) | (weight & 0xffff); + idst = (int *) range; + idst_offset = offset [state + level * wfa->states] + / 2; + for (x = width >> 1; x; x--) + *idst++ = weight & 0xfffefffe; + idst += (offset [state + level * wfa->states] + - width) / 2; + + for (y = height - 1; y; y--) + { + memcpy (idst, idst - idst_offset, + width * sizeof (word_t)); + idst += idst_offset; + } + } + } + edge = 1; + } + else + edge = 0; + + /* + * Add remaining weighted domain images to current range + */ + for (; isedge (domain = wfa->into[state][label][edge]); + edge++) + { + if (domain != 0) + { + word_t *src; + unsigned src_offset; + int weight; + + src = simg [domain + (level - 1) * wfa->states]; + src_offset = offset [domain + ((level - 1) + * wfa->states)] - width; + weight = wfa->int_weight [state][label][edge]; + + if (width == 1) /* can't add two-pixels in a row */ + { + word_t *dst; + unsigned dst_offset; + + dst = range; + dst_offset = offset [state + level * wfa->states] + - width; #ifdef HAVE_SIGNED_SHIFT - *dst++ += ((weight * (int) *src++) >> 10) << 1; + *dst++ += ((weight * (int) *src++) >> 10) << 1; #else /* not HAVE_SIGNED_SHIFT */ - *dst++ += ((weight * (int) *src++) / 1024) * 2; + *dst++ += ((weight * (int) *src++) / 1024) * 2; #endif /* not HAVE_SIGNED_SHIFT */ - if (height == 2) - { - src += src_offset; - dst += dst_offset; + if (height == 2) + { + src += src_offset; + dst += dst_offset; #ifdef HAVE_SIGNED_SHIFT - *dst++ += ((weight * (int) *src++) >> 10) << 1; + *dst++ += ((weight * (int) *src++) >> 10) << 1; #else /* not HAVE_SIGNED_SHIFT */ - *dst++ += ((weight * (int) *src++) / 1024) * 2; + *dst++ += ((weight * (int) *src++) / 1024) * 2; #endif /* not HAVE_SIGNED_SHIFT */ - } - } - else - { - int *idst; - unsigned idst_offset; - unsigned y; - - idst = (int *) range; - idst_offset = (offset [state + level * wfa->states] - - width) / 2; - - for (y = height; y; y--) - { - int *comp_dst = idst + (width >> 1); - - for (; idst != comp_dst;) - { - int tmp; /* temp. value of adjacent pixels */ + } + } + else + { + int *idst; + unsigned idst_offset; + unsigned y; + + idst = (int *) range; + idst_offset = (offset [state + level * wfa->states] + - width) / 2; + + for (y = height; y; y--) + { + int *comp_dst = idst + (width >> 1); + + for (; idst != comp_dst;) + { + int tmp; /* temp. value of adjacent pixels */ #ifdef HAVE_SIGNED_SHIFT -# ifndef WORDS_BIGENDIAN - tmp = (((weight * (int) src [1]) >> 10) << 17) - | (((weight * (int) src [0]) >> 9) - & 0xfffe); -# else /* not WORDS_BIGENDIAN */ - tmp = (((weight * (int)src [0]) >> 10) << 17) - | (((weight * (int)src [1]) >> 9) - & 0xfffe); -# endif /* not WORDS_BIGENDIAN */ +# if BYTE_ORDER == LITTLE_ENDIAN + tmp = (((weight * (int) src [1]) >> 10) << 17) + | (((weight * (int) src [0]) >> 9) + & 0xfffe); +# else + tmp = (((weight * (int)src [0]) >> 10) << 17) + | (((weight * (int)src [1]) >> 9) + & 0xfffe); +# endif #else /* not HAVE_SIGNED_SHIFT */ -# ifndef WORDS_BIGENDIAN - tmp = (((weight * (int) src [1]) / 1024) - * 131072) - | (((weight * (int) src [0])/ 512) - & 0xfffe); -# else /* not WORDS_BIGENDIAN */ - tmp = (((weight * (int) src [0]) / 1024) - * 131072) - | (((weight * (int) src [1])/ 512) - & 0xfffe); -# endif /* not WORDS_BIGENDIAN */ +# if BYTE_ORDER == LITTLE_ENDIAN + tmp = (((weight * (int) src [1]) / 1024) + * 131072) + | (((weight * (int) src [0])/ 512) + & 0xfffe); +# else + tmp = (((weight * (int) src [0]) / 1024) + * 131072) + | (((weight * (int) src [1])/ 512) + & 0xfffe); +# endif #endif /* not HAVE_SIGNED_SHIFT */ - src += 2; - *idst = (*idst + tmp) & 0xfffefffe; - idst++; - } - src += src_offset; - idst += idst_offset; - } - } - } - else - { - int weight = (int) (wfa->weight[state][label][edge] - * wfa->final_distribution[0] - * 8 + .5) * 2; - /* - * Range needs domain 0 - * (the constant function f(x, y) = 1), - * hence a faster algorithm is used. - */ - if (width == 1) /* can't add two-pixels in a row */ - { - word_t *dst; - unsigned dst_offset; - - dst = range; - dst_offset = offset [state + level * wfa->states] - - width; - - *dst++ += weight; - if (height == 2) - { - dst += dst_offset; - *dst++ += weight; - } - } - else - { - int *idst; - unsigned idst_offset; - unsigned y; - - weight = (weight * 65536) | (weight & 0xffff); - idst = (int *) range; - idst_offset = (offset [state + level * wfa->states] - - width) /2; - - for (y = height; y; y--) - { - int *comp_dst = idst + (width >> 1); - - for (; idst != comp_dst; ) - { - *idst = (*idst + weight) & 0xfffefffe; + src += 2; + *idst = (*idst + tmp) & 0xfffefffe; + idst++; + } + src += src_offset; + idst += idst_offset; + } + } + } + else + { + int weight = (int) (wfa->weight[state][label][edge] + * wfa->final_distribution[0] + * 8 + .5) * 2; + /* + * Range needs domain 0 + * (the constant function f(x, y) = 1), + * hence a faster algorithm is used. + */ + if (width == 1) /* can't add two-pixels in a row */ + { + word_t *dst; + unsigned dst_offset; + + dst = range; + dst_offset = offset [state + level * wfa->states] + - width; + + *dst++ += weight; + if (height == 2) + { + dst += dst_offset; + *dst++ += weight; + } + } + else + { + int *idst; + unsigned idst_offset; + unsigned y; + + weight = (weight * 65536) | (weight & 0xffff); + idst = (int *) range; + idst_offset = (offset [state + level * wfa->states] + - width) /2; + + for (y = height; y; y--) + { + int *comp_dst = idst + (width >> 1); + + for (; idst != comp_dst; ) + { + *idst = (*idst + weight) & 0xfffefffe; idst++; - } - idst += idst_offset; - } - } - } - } - } + } + idst += idst_offset; + } + } + } + } + } } } @@ -1509,24 +1510,24 @@ duplicate_state_image (const word_t *domain, unsigned offset, unsigned level) * to the lock 'pixels'. * * Return value: - * pointer to the new domain block + * pointer to the new domain block */ { word_t *dst, *pixels; - int y, n; + int y, n; dst = pixels = Calloc (size_of_level (level), sizeof (word_t)); if (domain) for (y = height_of_level (level); y; y--) { - memcpy (dst, domain, width_of_level (level) * sizeof (word_t)); - dst += width_of_level (level); - domain += offset; + memcpy (dst, domain, width_of_level (level) * sizeof (word_t)); + dst += width_of_level (level); + domain += offset; } - else /* state 0 */ + else /* state 0 */ for (n = size_of_level (level); n; n--) - *dst++ = (int) (128 * 8 + .5) * 2; + *dst++ = (int) (128 * 8 + .5) * 2; return pixels; } |