From 0472b91d165e465a91c521aeba9799d970eafc89 Mon Sep 17 00:00:00 2001
From: wiredfool <eric-github@soroos.net>
Date: Mon, 13 May 2013 21:27:41 -0700
Subject: [PATCH] really working webp alpha decoding

---
 _webp.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/_webp.c b/_webp.c
index d960c6e0b..b3fb73a00 100644
--- a/_webp.c
+++ b/_webp.c
@@ -112,15 +112,12 @@ PyObject* WebPEncodeRGBA_wrapper(PyObject* self, PyObject* args)
 PyObject* WebPDecode_wrapper(PyObject* self, PyObject* args)
 {
     PyBytesObject *webp_string;
-	int width;
-    int height;
     uint8_t *webp;
-    uint8_t *output;
     Py_ssize_t size;
     PyObject *ret, *bytes;
 	WebPDecoderConfig config;
     VP8StatusCode vp8_status_code = VP8_STATUS_OK;
-	char* mode = NULL;
+	char* mode = "RGB";
 
     if (!PyArg_ParseTuple(args, "S", &webp_string)) {
         Py_INCREF(Py_None);
@@ -136,6 +133,12 @@ PyObject* WebPDecode_wrapper(PyObject* self, PyObject* args)
 
     vp8_status_code = WebPGetFeatures(webp, size, &config.input);
 	if (vp8_status_code == VP8_STATUS_OK) {
+		// If we don't set it, we don't get alpha. 
+		// Initialized to MODE_RGB
+		if (config.input.has_alpha) {
+			config.output.colorspace = MODE_RGBA;
+			mode = "RGBA";
+		}
 		vp8_status_code = WebPDecode(webp, size, &config);
 	}