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#include "mupdf/fitz.h"
#include <zlib.h>
typedef struct fz_cbz_writer_s fz_cbz_writer;
struct fz_cbz_writer_s
{
fz_document_writer super;
fz_zip_writer *zip;
float resolution;
fz_pixmap *pixmap;
int count;
};
const char *fz_cbz_write_options_usage =
"CBZ output options:\n"
"\tresolution=N: resolution of rendered pages in pixels per inch (default 96)\n"
;
static fz_device *
cbz_begin_page(fz_context *ctx, fz_document_writer *wri_, const fz_rect *mediabox, fz_matrix *ctm)
{
fz_cbz_writer *wri = (fz_cbz_writer*)wri_;
fz_rect bbox;
fz_irect ibbox;
fz_scale(ctm, wri->resolution / 72, wri->resolution / 72);
bbox = *mediabox;
fz_transform_rect(&bbox, ctm);
fz_round_rect(&ibbox, &bbox);
wri->pixmap = fz_new_pixmap_with_bbox(ctx, fz_device_rgb(ctx), &ibbox, 1);
fz_clear_pixmap_with_value(ctx, wri->pixmap, 0xFF);
return fz_new_draw_device(ctx, wri->pixmap);
}
static void
cbz_end_page(fz_context *ctx, fz_document_writer *wri_, fz_device *dev)
{
fz_cbz_writer *wri = (fz_cbz_writer*)wri_;
fz_buffer *buffer;
char name[40];
wri->count += 1;
fz_snprintf(name, sizeof name, "p%04d.png", wri->count);
buffer = fz_new_buffer_from_pixmap_as_png(ctx, wri->pixmap);
fz_try(ctx)
fz_write_zip_entry(ctx, wri->zip, name, buffer, 0);
fz_always(ctx)
fz_drop_buffer(ctx, buffer);
fz_catch(ctx)
fz_rethrow(ctx);
fz_drop_pixmap(ctx, wri->pixmap);
wri->pixmap = NULL;
}
static void
cbz_close(fz_context *ctx, fz_document_writer *wri_)
{
fz_cbz_writer *wri = (fz_cbz_writer*)wri_;
fz_try(ctx)
fz_drop_zip_writer(ctx, wri->zip);
fz_always(ctx)
fz_drop_pixmap(ctx, wri->pixmap);
fz_catch(ctx)
fz_rethrow(ctx);
}
fz_document_writer *
fz_new_cbz_writer(fz_context *ctx, const char *path, const char *options)
{
const char *val;
fz_cbz_writer *wri;
wri = fz_malloc_struct(ctx, fz_cbz_writer);
wri->super.begin_page = cbz_begin_page;
wri->super.end_page = cbz_end_page;
wri->super.close = cbz_close;
fz_try(ctx)
wri->zip = fz_new_zip_writer(ctx, path);
fz_catch(ctx)
{
fz_free(ctx, wri);
fz_rethrow(ctx);
}
if (fz_has_option(ctx, options, "resolution", &val))
wri->resolution = fz_atof(val);
if (wri->resolution <= 0)
wri->resolution = 96;
return (fz_document_writer*)wri;
}
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