rename part 1 -- files

1 files changed, 0 insertions, 238 deletions

diff --git a/filter/predict.c b/filter/predict.c
deleted file mode 100644
index d7b594ac..00000000
--- a/filter/predict.c
+++ /dev/null
@@ -1,238 +0,0 @@
-#include <fitz.h>
-
-/* TODO: check if this works with 16bpp images */
-
-enum { MAXC = 16 };
-
-typedef struct fz_predict_s fz_predict;
-
-struct fz_predict_s
-{
-	fz_filter super;
-
-	int predictor;
-	int columns;
-	int colors;
-	int bpc;
-
-	int stride;
-	int bpp;
-	unsigned char *ref;
-
-	int encode;
-};
-
-fz_error *
-fz_newpredict(fz_filter **fp, fz_obj *params, int encode)
-{
-	fz_obj *obj;
-
-	FZ_NEWFILTER(fz_predict, p, predict);
-
-	p->encode = encode;
-
-	p->predictor = 1;
-	p->columns = 1;
-	p->colors = 1;
-	p->bpc = 8;
-
-	obj = fz_dictgets(params, "Predictor");
-	if (obj) p->predictor = fz_toint(obj);
-
-	obj = fz_dictgets(params, "Columns");
-	if (obj) p->columns = fz_toint(obj);
-
-	obj = fz_dictgets(params, "Colors");
-	if (obj) p->colors = fz_toint(obj);
-
-	obj = fz_dictgets(params, "BitsPerComponent");
-	if (obj) p->bpc = fz_toint(obj);
-
-	p->stride = (p->bpc * p->colors * p->columns + 7) / 8;
-	p->bpp = (p->bpc * p->colors + 7) / 8;
-
-	if (p->predictor >= 10) {
-		p->ref = fz_malloc(p->stride);
-		if (!p->ref) { fz_free(p); return fz_outofmem; }
-		memset(p->ref, 0, p->stride);
-	}
-	else {
-		p->ref = nil;
-	}
-
-	return nil;
-}
-
-void
-fz_droppredict(fz_filter *filter)
-{
-	fz_predict *p = (fz_predict*)filter;
-	fz_free(p->ref);
-}
-
-static inline int
-getcomponent(unsigned char *buf, int x, int bpc)
-{
-	switch (bpc)
-	{
-		case 1: return buf[x / 8] >> (7 - (x % 8)) & 0x01;
-		case 2: return buf[x / 4] >> ((3 - (x % 4)) * 2) & 0x03;
-		case 4: return buf[x / 2] >> ((1 - (x % 2)) * 4) & 0x0f;
-		case 8: return buf[x];
-	}
-	return 0;
-}
-
-static inline void
-putcomponent(unsigned char *buf, int x, int bpc, int value)
-{
-	switch (bpc)
-	{
-		case 1: buf[x / 8] |= value << (7 - (x % 8)); break;
-		case 2: buf[x / 4] |= value << ((3 - (x % 4)) * 2); break;
-		case 4: buf[x / 2] |= value << ((1 - (x % 2)) * 4); break;
-		case 8: buf[x] = value; break;
-	}
-}
-
-static inline int
-paeth(int a, int b, int c)
-{
-	/* The definitions of ac and bc are correct, not a typo. */
-	int ac = b - c, bc = a - c, abcc = ac + bc;
-	int pa = (ac < 0 ? -ac : ac);
-	int pb = (bc < 0 ? -bc : bc);
-	int pc = (abcc < 0 ? -abcc : abcc);
-	return pa <= pb && pa <= pc ? a : pb <= pc ? b : c;
-}
-
-static inline void
-none(fz_predict *p, unsigned char *in, unsigned char *out)
-{
-	memcpy(out, in, p->stride);
-}
-
-static void
-tiff(fz_predict *p, unsigned char *in, unsigned char *out)
-{
-	int left[MAXC];
-	int i, k;
-
-	for (k = 0; k < p->colors; k++)
-		left[k] = 0;
-
-	for (i = 0; i < p->columns; i++) {
-		for (k = 0; k < p->colors; k++) {
-			int a = getcomponent(in, i * p->colors + k, p->bpc);
-			int b = p->encode ? a - left[k] : a + left[k];
-			int c = b % (1 << p->bpc);
-			putcomponent(out, i * p->colors + k, p->bpc, c);
-			left[k] = p->encode ? a : c;
-		}
-	}
-}
-
-static void
-png(fz_predict *p, unsigned char *in, unsigned char *out, int predictor)
-{
-	int upleft[MAXC], left[MAXC], i, k;
-
-	for (k = 0; k < p->bpp; k++) {
-		left[k] = 0;
-		upleft[k] = 0;
-	}
-
-	if (p->encode)
-	{
-		for (k = 0, i = 0; i < p->stride; k = (k + 1) % p->bpp, i ++)
-		{
-			switch (predictor)
-			{
-			case 0: out[i] = in[i]; break;
-			case 1: out[i] = in[i] - left[k]; break;
-			case 2: out[i] = in[i] - p->ref[i]; break;
-			case 3: out[i] = in[i] - (left[k] + p->ref[i]) / 2; break;
-			case 4: out[i] = in[i] - paeth(left[k], p->ref[i], upleft[k]); break;
-			}
-			left[k] = in[i];
-			upleft[k] = p->ref[i];
-		}
-	}
-
-	else
-	{
-		for (k = 0, i = 0; i < p->stride; k = (k + 1) % p->bpp, i ++)
-		{
-			switch (predictor)
-			{
-			case 0: out[i] = in[i]; break;
-			case 1: out[i] = in[i] + left[k]; break;
-			case 2: out[i] = in[i] + p->ref[i]; break;
-			case 3: out[i] = in[i] + (left[k] + p->ref[i]) / 2; break;
-			case 4: out[i] = in[i] + paeth(left[k], p->ref[i], upleft[k]); break;
-			}
-			left[k] = out[i];
-			upleft[k] = p->ref[i];
-		}
-	}
-}
-
-fz_error *
-fz_processpredict(fz_filter *filter, fz_buffer *in, fz_buffer *out)
-{
-	fz_predict *dec = (fz_predict*)filter;
-	int ispng = dec->predictor >= 10;
-	int predictor;
-
-	while (1)
-	{
-		if (in->rp + dec->stride + (!dec->encode && ispng) > in->wp) {
-			if (in->eof)
-				return fz_iodone;
-			return fz_ioneedin;
-		}
-
-		if (out->wp + dec->stride + (dec->encode && ispng) > out->ep)
-			return fz_ioneedout;
-
-		if (dec->predictor == 1) {
-			none(dec, in->rp, out->wp);
-		}
-		else if (dec->predictor == 2) {
-			if (dec->bpc != 8)
-				memset(out->wp, 0, dec->stride);
-			tiff(dec, in->rp, out->wp);
-		}
-		else {
-			if (dec->encode) {
-				predictor = dec->predictor - 10;
-				if (predictor < 0 || predictor > 4)
-					predictor = 1;
-				*out->wp ++ = predictor;
-			}
-			else {
-				predictor = *in->rp++;
-			}
-			png(dec, in->rp, out->wp, predictor);
-		}
-
-		if (dec->ref)
-			memcpy(dec->ref, out->wp, dec->stride);
-
-		in->rp += dec->stride;
-		out->wp += dec->stride;
-	}
-}
-
-fz_error *
-fz_newpredictd(fz_filter **fp, fz_obj *params)
-{
-	return fz_newpredict(fp, params, 0);
-}
-
-fz_error *
-fz_newpredicte(fz_filter **fp, fz_obj *params)
-{
-	return fz_newpredict(fp, params, 1);
-}
-