1 files changed, 63 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/simple_idct.h b/media/ffvpx/libavcodec/simple_idct.h
new file mode 100644
index 0000000000..39df2308ca
--- /dev/null
+++ b/media/ffvpx/libavcodec/simple_idct.h
@@ -0,0 +1,63 @@
+/*
+ * Simple IDCT
+ *
+ * Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple idct header.
+ */
+
+#ifndef AVCODEC_SIMPLE_IDCT_H
+#define AVCODEC_SIMPLE_IDCT_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+void ff_simple_idct_put_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_add_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_int16_8bit(int16_t *block);
+
+void ff_simple_idct_put_int16_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_add_int16_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_int16_10bit(int16_t *block);
+
+void ff_simple_idct_put_int32_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_add_int32_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_int32_10bit(int16_t *block);
+
+void ff_simple_idct_put_int16_12bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_add_int16_12bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct_int16_12bit(int16_t *block);
+
+/**
+ * Special version of ff_simple_idct_int16_10bit() which does dequantization
+ * and scales by a factor of 2 more between the two IDCTs to account
+ * for larger scale of input coefficients.
+ */
+void ff_prores_idct(int16_t *block, const int16_t *qmat);
+
+void ff_simple_idct248_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+
+void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+
+#endif /* AVCODEC_SIMPLE_IDCT_H */