av1: do C inverse transforms in int32_t precision

Fixes C part of #321.

1 files changed, 60 insertions, 0 deletions

diff --git a/src/itx_1d.h b/src/itx_1d.h
new file mode 100644
index 0000000..357987a
--- /dev/null
+++ b/src/itx_1d.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright © 2018-2019, VideoLAN and dav1d authors
+ * Copyright © 2018-2019, Two Orioles, LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifndef DAV1D_SRC_ITX_1D_H
+#define DAV1D_SRC_ITX_1D_H
+
+#define decl_itx_1d_fn(name) \
+void (name)(const int32_t *in, ptrdiff_t in_s, \
+            int32_t *out, ptrdiff_t out_s, const int range)
+typedef decl_itx_1d_fn(*itx_1d_fn);
+
+decl_itx_1d_fn(dav1d_inv_dct4_1d_c);
+decl_itx_1d_fn(dav1d_inv_dct8_1d_c);
+decl_itx_1d_fn(dav1d_inv_dct16_1d_c);
+decl_itx_1d_fn(dav1d_inv_dct32_1d_c);
+decl_itx_1d_fn(dav1d_inv_dct64_1d_c);
+
+decl_itx_1d_fn(dav1d_inv_adst4_1d_c);
+decl_itx_1d_fn(dav1d_inv_adst8_1d_c);
+decl_itx_1d_fn(dav1d_inv_adst16_1d_c);
+
+decl_itx_1d_fn(dav1d_inv_flipadst4_1d_c);
+decl_itx_1d_fn(dav1d_inv_flipadst8_1d_c);
+decl_itx_1d_fn(dav1d_inv_flipadst16_1d_c);
+
+decl_itx_1d_fn(dav1d_inv_identity4_1d_c);
+decl_itx_1d_fn(dav1d_inv_identity8_1d_c);
+decl_itx_1d_fn(dav1d_inv_identity16_1d_c);
+decl_itx_1d_fn(dav1d_inv_identity32_1d_c);
+
+decl_itx_1d_fn(dav1d_inv_wht4_1d_c);
+
+#endif /* DAV1D_SRC_ITX_1D_H */