wmv2: move IDCT to its own DSP context.

This allows us to remove FF_IDCT_WMV2, which serves no practical purpose
other than to be able to select the WMV2 IDCT for MPEG (or vice versa)
and get corrupt output.

Fate tests for all wmv2-related tests change, because (for some obscure
reason) they forced use of the MPEG IDCT. You would get the same changes
previously by not using -idct simple in the fate test (or replacing it
with -idct auto).

1 files changed, 34 insertions, 0 deletions

diff --git a/libavcodec/wmv2dsp.h b/libavcodec/wmv2dsp.h
new file mode 100644
index 0000000000..eaffcfc537
--- /dev/null
+++ b/libavcodec/wmv2dsp.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_WMV2DSP_H
+#define AVCODEC_WMV2DSP_H
+
+#include <stdint.h>
+#include "dsputil.h"
+
+typedef struct WMV2DSPContext {
+    void (*idct_add)(uint8_t *dest, int line_size, DCTELEM *block);
+    void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block);
+
+    int idct_perm;
+} WMV2DSPContext;
+
+void ff_wmv2dsp_init(WMV2DSPContext *c);
+
+#endif /* AVCODEC_WMV2DSP_H */