diff options
Diffstat (limited to 'tools/rle.c')
| -rw-r--r-- | tools/rle.c | 134 |
1 files changed, 67 insertions, 67 deletions
diff --git a/tools/rle.c b/tools/rle.c index 2e60afd1..0cee6603 100644 --- a/tools/rle.c +++ b/tools/rle.c @@ -4,7 +4,7 @@ * See the main source file 'xineliboutput.c' for copyright information and * how to reach the author. * - * $Id: rle.c,v 1.1 2008-12-05 16:34:21 phintuka Exp $ + * $Id: rle.c,v 1.2 2009-02-16 16:11:51 phintuka Exp $ * */ @@ -32,25 +32,25 @@ int rle_compress(xine_rle_elem_t **rle_data, const uint8_t *data, int w, int h) rle_p = (xine_rle_elem_t*)malloc(4*rle_size); rle_base = rle_p; - for( y = 0; y < h; y++ ) { + for (y = 0; y < h; y++) { rle.len = 0; rle.color = 0; c = data + y * w; - for( x = 0; x < w; x++, c++ ) { - if( rle.color != *c ) { - if( rle.len ) { - if( (num_rle + h-y+1) > rle_size ) { - rle_size *= 2; - rle_base = (xine_rle_elem_t*)realloc( rle_base, 4*rle_size ); - rle_p = rle_base + num_rle; - } - *rle_p++ = rle; - num_rle++; - } - rle.color = *c; - rle.len = 1; + for (x = 0; x < w; x++, c++) { + if (rle.color != *c) { + if (rle.len) { + if ( (num_rle + h-y+1) > rle_size ) { + rle_size *= 2; + rle_base = (xine_rle_elem_t*)realloc( rle_base, 4*rle_size ); + rle_p = rle_base + num_rle; + } + *rle_p++ = rle; + num_rle++; + } + rle.color = *c; + rle.len = 1; } else { - rle.len++; + rle.len++; } } *rle_p++ = rle; @@ -68,7 +68,7 @@ int rle_compress(xine_rle_elem_t **rle_data, const uint8_t *data, int w, int h) * - fast scaling in compressed form without decompression */ xine_rle_elem_t *rle_scale_nearest(const xine_rle_elem_t *old_rle, int *rle_elems, - int w, int h, int new_w, int new_h) + int w, int h, int new_w, int new_h) { #define FACTORBASE 0x100 #define FACTOR2PIXEL(f) ((f)>>8) @@ -85,15 +85,15 @@ xine_rle_elem_t *rle_scale_nearest(const xine_rle_elem_t *old_rle, int *rle_elem xine_rle_elem_t *new_rle_start = new_rle; /* we assume rle elements are breaked at end of line */ - while(old_y < old_h) { + while (old_y < old_h) { int elems_current_line = 0; int old_x = 0, new_x = 0; - while(old_x < old_w) { + while (old_x < old_w) { int new_x_end = SCALEX(old_x + old_rle->len); - if(new_x_end > new_w) { - new_x_end = new_w; + if (new_x_end > new_w) { + new_x_end = new_w; } new_rle->len = new_x_end - new_x; @@ -102,66 +102,66 @@ xine_rle_elem_t *rle_scale_nearest(const xine_rle_elem_t *old_rle, int *rle_elem old_x += old_rle->len; old_rle++; /* may be incremented to last element + 1 (element is not accessed anymore) */ - if(new_rle->len > 0) { - new_x += new_rle->len; - new_rle++; - - num_rle++; - elems_current_line++; - - if( (num_rle + 1) >= rle_size ) { - rle_size *= 2; - new_rle_start = (xine_rle_elem_t*)realloc( new_rle_start, 4*rle_size); - new_rle = new_rle_start + num_rle; - } + if (new_rle->len > 0) { + new_x += new_rle->len; + new_rle++; + + num_rle++; + elems_current_line++; + + if( (num_rle + 1) >= rle_size ) { + rle_size *= 2; + new_rle_start = (xine_rle_elem_t*)realloc( new_rle_start, 4*rle_size); + new_rle = new_rle_start + num_rle; + } } } - if(new_x < new_w) + if (new_x < new_w) (new_rle-1)->len += new_w - new_x; - old_y++; + old_y++; new_y++; - if(factor_y > FACTORBASE) { + if (factor_y > FACTORBASE) { /* scale up -- duplicate current line ? */ int dup = SCALEY(old_y) - new_y; /* if no lines left in (old) rle, copy all lines still missing from new */ - if(old_y == old_h) - dup = new_h - new_y - 1; - - while(dup-- && (new_y+1<new_h)) { - xine_rle_elem_t *prevline; - int n; - if( (num_rle + elems_current_line + 1) >= rle_size ) { - rle_size *= 2; - new_rle_start = (xine_rle_elem_t*)realloc( new_rle_start, 4*rle_size); - new_rle = new_rle_start + num_rle; - } - - /* duplicate previous line */ - prevline = new_rle - elems_current_line; - for(n = 0; n < elems_current_line; n++) { - *new_rle++ = *prevline++; - num_rle++; - } - new_y++; + if (old_y == old_h) + dup = new_h - new_y - 1; + + while (dup-- && (new_y+1<new_h)) { + xine_rle_elem_t *prevline; + int n; + if ( (num_rle + elems_current_line + 1) >= rle_size ) { + rle_size *= 2; + new_rle_start = (xine_rle_elem_t*)realloc( new_rle_start, 4*rle_size); + new_rle = new_rle_start + num_rle; + } + + /* duplicate previous line */ + prevline = new_rle - elems_current_line; + for (n = 0; n < elems_current_line; n++) { + *new_rle++ = *prevline++; + num_rle++; + } + new_y++; } - } else if(factor_y < FACTORBASE) { + } else if (factor_y < FACTORBASE) { /* scale down -- drop next line ? */ int skip = new_y - SCALEY(old_y); - if(old_y == old_h-1) { - /* one (old) line left ; don't skip it if new rle is not complete */ - if(new_y < new_h) - skip = 0; + if (old_y == old_h-1) { + /* one (old) line left ; don't skip it if new rle is not complete */ + if (new_y < new_h) + skip = 0; } - while(skip-- && - old_y<old_h /* rounding error may add one line, filter it out */) { - for(old_x = 0; old_x < old_w;) { - old_x += old_rle->len; - old_rle++; - } - old_y++; + while (skip-- && + old_y<old_h /* rounding error may add one line, filter it out */) { + for (old_x = 0; old_x < old_w;) { + old_x += old_rle->len; + old_rle++; + } + old_y++; } } } |