1 files changed, 73 insertions, 0 deletions
diff --git a/libavcodec/me_cmp.h b/libavcodec/me_cmp.h
new file mode 100644
index 0000000..05ae30b
--- /dev/null
+++ b/libavcodec/me_cmp.h
@@ -0,0 +1,73 @@
+/*
+ * 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_ME_CMP_H
+#define AVCODEC_ME_CMP_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+
+extern uint32_t ff_square_tab[512];
+
+struct MpegEncContext;
+/* Motion estimation:
+ * h is limited to { width / 2, width, 2 * width },
+ * but never larger than 16 and never smaller than 2.
+ * Although currently h < 4 is not used as functions with
+ * width < 8 are neither used nor implemented. */
+typedef int (*me_cmp_func)(struct MpegEncContext *c,
+                           uint8_t *blk1 /* align width (8 or 16) */,
+                           uint8_t *blk2 /* align 1 */, int line_size, int h);
+
+typedef struct MECmpContext {
+    int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
+
+    me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
+    me_cmp_func sse[6];
+    me_cmp_func hadamard8_diff[6];
+    me_cmp_func dct_sad[6];
+    me_cmp_func quant_psnr[6];
+    me_cmp_func bit[6];
+    me_cmp_func rd[6];
+    me_cmp_func vsad[6];
+    me_cmp_func vsse[6];
+    me_cmp_func nsse[6];
+    me_cmp_func dct_max[6];
+    me_cmp_func dct264_sad[6];
+
+    me_cmp_func me_pre_cmp[6];
+    me_cmp_func me_cmp[6];
+    me_cmp_func me_sub_cmp[6];
+    me_cmp_func mb_cmp[6];
+    me_cmp_func ildct_cmp[6]; // only width 16 used
+    me_cmp_func frame_skip_cmp[6]; // only width 8 used
+
+    me_cmp_func pix_abs[2][4];
+} MECmpContext;
+
+void ff_me_cmp_init_static(void);
+
+void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx);
+void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx);
+void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx);
+void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx);
+
+void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type);
+
+#endif /* AVCODEC_ME_CMP_H */