Rearrange source files.

1 files changed, 123 insertions, 0 deletions

diff --git a/source/fitz/bitmap.c b/source/fitz/bitmap.c
new file mode 100644
index 00000000..6357f7d7
--- /dev/null
+++ b/source/fitz/bitmap.c
@@ -0,0 +1,123 @@
+#include "mupdf/fitz.h"
+
+fz_bitmap *
+fz_new_bitmap(fz_context *ctx, int w, int h, int n, int xres, int yres)
+{
+	fz_bitmap *bit;
+
+	bit = fz_malloc_struct(ctx, fz_bitmap);
+	bit->refs = 1;
+	bit->w = w;
+	bit->h = h;
+	bit->n = n;
+	bit->xres = xres;
+	bit->yres = yres;
+	/* Span is 32 bit aligned. We may want to make this 64 bit if we
+	 * use SSE2 etc. */
+	bit->stride = ((n * w + 31) & ~31) >> 3;
+
+	bit->samples = fz_malloc_array(ctx, h, bit->stride);
+
+	return bit;
+}
+
+fz_bitmap *
+fz_keep_bitmap(fz_context *ctx, fz_bitmap *bit)
+{
+	if (bit)
+		bit->refs++;
+	return bit;
+}
+
+void
+fz_drop_bitmap(fz_context *ctx, fz_bitmap *bit)
+{
+	if (bit && --bit->refs == 0)
+	{
+		fz_free(ctx, bit->samples);
+		fz_free(ctx, bit);
+	}
+}
+
+void
+fz_clear_bitmap(fz_context *ctx, fz_bitmap *bit)
+{
+	memset(bit->samples, 0, bit->stride * bit->h);
+}
+
+/*
+ * Write bitmap to PBM file
+ */
+
+void
+fz_write_pbm(fz_context *ctx, fz_bitmap *bitmap, char *filename)
+{
+	FILE *fp;
+	unsigned char *p;
+	int h, bytestride;
+
+	fp = fopen(filename, "wb");
+	if (!fp)
+		fz_throw(ctx, FZ_ERROR_GENERIC, "cannot open file '%s': %s", filename, strerror(errno));
+
+	assert(bitmap->n == 1);
+
+	fprintf(fp, "P4\n%d %d\n", bitmap->w, bitmap->h);
+
+	p = bitmap->samples;
+
+	h = bitmap->h;
+	bytestride = (bitmap->w + 7) >> 3;
+	while (h--)
+	{
+		fwrite(p, 1, bytestride, fp);
+		p += bitmap->stride;
+	}
+
+	fclose(fp);
+}
+
+fz_colorspace *fz_pixmap_colorspace(fz_context *ctx, fz_pixmap *pix)
+{
+	if (!pix)
+		return NULL;
+	return pix->colorspace;
+}
+
+int fz_pixmap_components(fz_context *ctx, fz_pixmap *pix)
+{
+	if (!pix)
+		return 0;
+	return pix->n;
+}
+
+unsigned char *fz_pixmap_samples(fz_context *ctx, fz_pixmap *pix)
+{
+	if (!pix)
+		return NULL;
+	return pix->samples;
+}
+
+void fz_bitmap_details(fz_bitmap *bit, int *w, int *h, int *n, int *stride)
+{
+	if (!bit)
+	{
+		if (w)
+			*w = 0;
+		if (h)
+			*h = 0;
+		if (n)
+			*n = 0;
+		if (stride)
+			*stride = 0;
+		return;
+	}
+	if (w)
+		*w = bit->w;
+	if (h)
+		*h = bit->h;
+	if (n)
+		*n = bit->n;
+	if (stride)
+		*stride = bit->stride;
+}