/*
- * $Id: ext.c 1 2005-03-26 01:45:38Z tilman $
+ * $Id: ext.c 35 2005-05-10 18:58:49Z tilman $
*
* Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
*
#include <ruby.h>
#define CHECK_KEY(key) \
- Check_Type ((key), T_STRING); \
- if (rb_funcall ((key), rb_intern ("include?"), \
- 1, INT2FIX (0)) == Qtrue) \
+ if (rb_funcall (key, id_include, 1, INT2FIX (0)) == Qtrue) \
rb_raise (rb_eArgError, "key must not contain binary zeroes");
+#define CHECK_CLOSED(ef) \
+ if (!*(ef)) \
+ rb_raise (rb_eIOError, "closed stream");
+
+#ifdef WORDS_BIGENDIAN
+# define BSWAP32(x) \
+ ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
+#else /* !WORDS_BIGENDIAN */
+# define BSWAP16(x) (x)
+# define BSWAP32(x) (x)
+#endif /* WORDS_BIGENDIAN */
+
static VALUE c_close (VALUE self);
+static VALUE id_include;
+
static void
c_free (Eet_File **ef)
{
VALUE file = Qnil, mode = Qnil;
Eet_File **ef = NULL;
Eet_File_Mode m = EET_FILE_MODE_READ;
- const char *tmp;
+ const char *tmp, *cfile;
Data_Get_Struct (self, Eet_File *, ef);
rb_scan_args (argc, argv, "11", &file, &mode);
- Check_Type (file, T_STRING);
+ cfile = StringValuePtr (file);
if (!NIL_P (mode)) {
- Check_Type (mode, T_STRING);
-
tmp = StringValuePtr (mode);
if (!strcmp (tmp, "r+"))
m = EET_FILE_MODE_READ_WRITE;
eet_init ();
- *ef = eet_open (StringValuePtr (file), m);
+ *ef = eet_open (cfile, m);
if (!*ef) {
switch (m) {
case EET_FILE_MODE_READ_WRITE:
break;
}
- rb_raise (rb_eRuntimeError, tmp, file);
+ rb_raise (rb_eRuntimeError, tmp, cfile);
}
return self;
Eet_File **ef = NULL;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
- else {
- eet_close (*ef);
- *ef = NULL;
+ eet_close (*ef);
+ *ef = NULL;
- eet_shutdown ();
- }
+ eet_shutdown ();
return self;
}
int i, count = 0;
Data_Get_Struct (self, Eet_File *, ef);
-
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
+ CHECK_CLOSED (ef);
switch (eet_mode_get (*ef)) {
case EET_FILE_MODE_READ:
rb_scan_args (argc, argv, "01", &glob);
- if (!NIL_P (glob)) {
- Check_Type (glob, T_STRING);
+ if (!NIL_P (glob))
tmp = StringValuePtr (glob);
- }
ret = rb_ary_new ();
c_delete (VALUE self, VALUE key)
{
Eet_File **ef = NULL;
- char *tmp;
+ char *ckey;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
+ ckey = StringValuePtr (key);
CHECK_KEY (key);
- tmp = StringValuePtr (key);
-
- if (!eet_delete (*ef, tmp))
- rb_raise (rb_eIOError, "cannot delete entry - %s", tmp);
+ if (!eet_delete (*ef, ckey))
+ rb_raise (rb_eIOError, "cannot delete entry - %s", ckey);
return self;
}
VALUE ret;
Eet_File **ef = NULL;
void *data;
+ char *ckey;
int size = 0;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
+ ckey = StringValuePtr (key);
CHECK_KEY (key);
- data = eet_read (*ef, StringValuePtr (key), &size);
+ data = eet_read (*ef, ckey, &size);
if (!data)
- rb_raise (rb_eIOError, "cannot read entry - %s", key);
+ rb_raise (rb_eIOError, "cannot read entry - %s", ckey);
ret = rb_str_new (data, size);
{
VALUE key = Qnil, buf = Qnil, comp = Qnil;
Eet_File **ef = NULL;
+ char *ckey, *cbuf;
int n;
Data_Get_Struct (self, Eet_File *, ef);
-
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
+ CHECK_CLOSED (ef);
rb_scan_args (argc, argv, "21", &key, &buf, &comp);
if (NIL_P (comp))
comp = Qtrue;
+ ckey = StringValuePtr (key);
CHECK_KEY (key);
- Check_Type (buf, T_STRING);
+ cbuf = StringValuePtr (buf);
- n = eet_write (*ef, StringValuePtr (key),
- StringValuePtr (buf), RSTRING (buf)->len,
+ n = eet_write (*ef, ckey,
+ cbuf, RSTRING (buf)->len,
comp == Qtrue);
if (!n)
rb_raise (rb_eIOError, "couldn't write to file");
* Reads an image entry from _ef_ that is stored as _key_.
* If the data cannot be read, an +IOError+ is raised,
* otherwise an Array is returned that contains the image data,
- * the image width, the image height and a boolean that indicates
- * whether the image has an alpha channel or not.
+ * the image width, the image height, a boolean that indicates
+ * whether the image has an alpha channel or not and a hash
+ * that contains the compression options that were used to store
+ * the image (see Eet::File#write_image).
*/
static VALUE
c_read_image (VALUE self, VALUE key)
{
- VALUE ret;
+ VALUE ret, comp;
Eet_File **ef = NULL;
void *data;
- int w = 0, h = 0, has_alpha = 0;
+ char *ckey;
+ int w = 0, h = 0, has_alpha = 0, level = 0, quality = 0, lossy = 0;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
+ ckey = StringValuePtr (key);
CHECK_KEY (key);
- data = eet_data_image_read (*ef, StringValuePtr (key), &w, &h,
- &has_alpha, NULL, NULL, NULL);
+ data = eet_data_image_read (*ef, ckey, &w, &h,
+ &has_alpha, &level, &quality,
+ &lossy);
if (!data)
- rb_raise (rb_eIOError, "cannot read entry - %s", key);
+ rb_raise (rb_eIOError, "cannot read entry - %s", ckey);
- ret = rb_ary_new3 (4, rb_str_new (data, w * h * 4),
+ comp = rb_hash_new ();
+ rb_hash_aset (comp, ID2SYM (rb_intern ("lossy")), INT2FIX (lossy));
+ rb_hash_aset (comp, ID2SYM (rb_intern ("level")), INT2FIX (level));
+ rb_hash_aset (comp, ID2SYM (rb_intern ("quality")), INT2FIX (quality));
+
+ ret = rb_ary_new3 (5, rb_str_new (data, w * h * 4),
INT2FIX (w), INT2FIX (h),
- has_alpha ? Qtrue : Qfalse);
+ has_alpha ? Qtrue : Qfalse, comp);
free (data);
return ret;
/*
* call-seq:
- * ef.write_image(key, image_data, w, h [, alpha] ) -> integer
+ * ef.write_image(key, image_data, w, h [, alpha] [, comp] ) -> integer
*
* Stores _image_data_ with width _w_ and height _h_ in _ef_ as _key_.
* Pass true for _alpha_ if the image contains an alpha channel.
+ * You can control how the image is compressed by passing _comp_, which
+ * is a hash whose :lossy entry is true if the image should be
+ * compressed lossily. If :lossy is true, the :quality entry
+ * (0-100, default 100) sets the compression quality.
+ * If :lossy is false, the :level entry (0-9, default 9) sets the
+ * compression level. If _comp_ isn't passed, then the
+ * image is stored losslessly.
* If the data cannot be written, an +IOError+ is raised,
* otherwise a the number of bytes written is returned.
*/
c_write_image (int argc, VALUE *argv, VALUE self)
{
VALUE key = Qnil, buf = Qnil, w = Qnil, h = Qnil, has_alpha = Qnil;
+ VALUE comp = Qnil, tmp;
Eet_File **ef = NULL;
- int n;
+ char *ckey, *cbuf;
+ int n, lossy = 0, level = 9, quality = 100;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
- rb_scan_args (argc, argv, "41", &key, &buf, &w, &h, &has_alpha);
+ rb_scan_args (argc, argv, "42", &key, &buf, &w, &h, &has_alpha,
+ &comp);
if (NIL_P (has_alpha))
has_alpha = Qfalse;
+ ckey = StringValuePtr (key);
CHECK_KEY (key);
- Check_Type (buf, T_STRING);
+ cbuf = StringValuePtr (buf);
Check_Type (w, T_FIXNUM);
Check_Type (h, T_FIXNUM);
+ if (!NIL_P (comp)) {
+ Check_Type (comp, T_HASH);
+
+ tmp = rb_hash_aref (comp, ID2SYM (rb_intern ("lossy")));
+ if (!NIL_P (tmp))
+ lossy = FIX2INT (tmp);
+
+ tmp = rb_hash_aref (comp, ID2SYM (rb_intern ("level")));
+ if (!NIL_P (tmp))
+ level = FIX2INT (tmp);
+
+ tmp = rb_hash_aref (comp, ID2SYM (rb_intern ("quality")));
+ if (!NIL_P (tmp))
+ quality = FIX2INT (tmp);
+ }
+
if (!RSTRING (buf)->len)
return INT2FIX (0);
- n = eet_data_image_write (*ef, StringValuePtr (key),
- StringValuePtr (buf),
+ n = eet_data_image_write (*ef, ckey, cbuf,
FIX2INT (w), FIX2INT (h),
- has_alpha == Qtrue, 9, 0, 0);
+ has_alpha == Qtrue,
+ level, quality, lossy);
if (!n)
rb_raise (rb_eIOError, "couldn't write to file");
else
return INT2FIX (n);
}
+static VALUE
+stream_serialize (VALUE self)
+{
+ VALUE ret;
+ struct RArray *stream;
+ static ID id_serialize;
+ long i;
+
+ ret = rb_str_new2 ("");
+
+ stream = RARRAY (self);
+ if (!stream->len)
+ return ret;
+
+ if (!id_serialize)
+ id_serialize = rb_intern ("serialize");
+
+ for (i = 0; i < stream->len; i++) {
+ VALUE str = rb_funcall (stream->ptr[i], id_serialize, 0, NULL);
+
+ rb_str_append (ret, str);
+ }
+
+ return ret;
+}
+
+static VALUE
+chunk_serialize (VALUE self)
+{
+ VALUE tmp, ret;
+ unsigned int size, buf_len;
+ unsigned char *buf;
+ struct RString *tag, *data;
+ static ID id_tag, id_data;
+
+ if (!id_tag)
+ id_tag = rb_intern ("@tag");
+
+ if (!id_data)
+ id_data = rb_intern ("@data");
+
+ tmp = rb_ivar_get (self, id_tag);
+ StringValue (tmp);
+ tag = RSTRING (tmp);
+
+ tmp = rb_ivar_get (self, id_data);
+ StringValue (tmp);
+ data = RSTRING (tmp);
+
+ buf_len = 9 + tag->len + data->len;
+ ret = rb_str_buf_new (buf_len);
+
+ buf = RSTRING (ret)->ptr;
+ RSTRING (ret)->len = buf_len;
+
+ memcpy (buf, "CHnK", 4);
+ buf += 4;
+
+ size = tag->len + data->len + 1;
+ size = BSWAP32 (size);
+ memcpy (buf, &size, 4);
+ buf += 4;
+
+ memcpy (buf, tag->ptr, tag->len);
+ buf += tag->len;
+
+ *buf++ = 0;
+
+ memcpy (buf, data->ptr, data->len);
+
+ return ret;
+}
+
void
Init_eet_ext ()
{
rb_define_method (c, "write", c_write, -1);
rb_define_method (c, "read_image", c_read_image, 1);
rb_define_method (c, "write_image", c_write_image, -1);
+
+ c = rb_define_class_under (m, "Stream", rb_cArray);
+ rb_define_method (c, "serialize", stream_serialize, 0);
+
+ c = rb_define_class_under (m, "Chunk", rb_cObject);
+ rb_define_method (c, "serialize", chunk_serialize, 0);
+
+ id_include = rb_intern ("include?");
}
projects / ruby-eet.git / blobdiff