1 files changed, 66 insertions, 0 deletions
diff --git a/gtk/decode-zlib.c b/gtk/decode-zlib.c
index 8491541..892713e 100644
--- a/gtk/decode-zlib.c
+++ b/gtk/decode-zlib.c
@@ -16,3 +16,69 @@
    License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
 #include "decode.h"
+
+#define ZLIB_WINAPI
+#include <zlib.h>
+
+typedef struct GlibZlibDecoder
+{
+    SpiceZlibDecoder         base;
+    z_stream                 _z_strm;
+} GlibZlibDecoder;
+
+static void decode(SpiceZlibDecoder *decoder,
+                   uint8_t *data, int data_size,
+                   uint8_t *dest, int dest_size)
+{
+    GlibZlibDecoder *d = SPICE_CONTAINEROF(decoder, GlibZlibDecoder, base);
+    int z_ret;
+
+    inflateReset(&d->_z_strm);
+    d->_z_strm.next_in = data;
+    d->_z_strm.avail_in = data_size;
+    d->_z_strm.next_out = dest;
+    d->_z_strm.avail_out = dest_size;
+
+    z_ret = inflate(&d->_z_strm, Z_FINISH);
+
+    if (z_ret != Z_STREAM_END) {
+        g_warning("zlib inflate failed, error %d", z_ret);
+    }
+}
+
+static SpiceZlibDecoderOps zlib_decoder_ops = {
+    .decode = decode,
+};
+
+SpiceZlibDecoder *zlib_decoder_new(void)
+{
+    GlibZlibDecoder *d = spice_new0(GlibZlibDecoder, 1);
+    int z_ret;
+
+    d->_z_strm.zalloc = Z_NULL;
+    d->_z_strm.zfree = Z_NULL;
+    d->_z_strm.opaque = Z_NULL;
+    d->_z_strm.next_in = Z_NULL;
+    d->_z_strm.avail_in = 0;
+    z_ret = inflateInit(&d->_z_strm);
+    if (z_ret != Z_OK) {
+        g_warning("zlib decoder init failed, error %d", z_ret);
+        goto fail;
+    }
+
+    d->base.ops = &zlib_decoder_ops;
+
+    return &d->base;
+
+fail:
+    free(d);
+    return NULL;
+}
+
+void zlib_decoder_destroy(SpiceZlibDecoder *decoder)
+{
+    GlibZlibDecoder *d = SPICE_CONTAINEROF(decoder, GlibZlibDecoder, base);
+
+    inflateEnd(&d->_z_strm);
+    free(d);
+}