ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/h264pred.h

@@ -0,0 +1,126 @@
+/*
+ * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
+ * Copyright (c) 2003 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
+ * H.264 / AVC / MPEG4 prediction functions.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#ifndef AVCODEC_H264PRED_H
+#define AVCODEC_H264PRED_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+/**
+ * Prediction types
+ */
+//@{
+#define VERT_PRED              0
+#define HOR_PRED               1
+#define DC_PRED                2
+#define DIAG_DOWN_LEFT_PRED    3
+#define DIAG_DOWN_RIGHT_PRED   4
+#define VERT_RIGHT_PRED        5
+#define HOR_DOWN_PRED          6
+#define VERT_LEFT_PRED         7
+#define HOR_UP_PRED            8
+
+// DC edge (not for VP8)
+#define LEFT_DC_PRED           9
+#define TOP_DC_PRED           10
+#define DC_128_PRED           11
+
+// RV40 specific
+#define DIAG_DOWN_LEFT_PRED_RV40_NODOWN   12
+#define HOR_UP_PRED_RV40_NODOWN           13
+#define VERT_LEFT_PRED_RV40_NODOWN        14
+
+// VP8 specific
+#define TM_VP8_PRED            9    ///< "True Motion", used instead of plane
+#define VERT_VP8_PRED         10    ///< for VP8, #VERT_PRED is the average of
+                                    ///< (left col+cur col x2+right col) / 4;
+                                    ///< this is the "unaveraged" one
+#define HOR_VP8_PRED          14    ///< unaveraged version of #HOR_PRED, see
+                                    ///< #VERT_VP8_PRED for details
+#define DC_127_PRED           12
+#define DC_129_PRED           13
+
+#define DC_PRED8x8             0
+#define HOR_PRED8x8            1
+#define VERT_PRED8x8           2
+#define PLANE_PRED8x8          3
+
+// DC edge
+#define LEFT_DC_PRED8x8        4
+#define TOP_DC_PRED8x8         5
+#define DC_128_PRED8x8         6
+
+// H264/SVQ3 (8x8) specific
+#define ALZHEIMER_DC_L0T_PRED8x8  7
+#define ALZHEIMER_DC_0LT_PRED8x8  8
+#define ALZHEIMER_DC_L00_PRED8x8  9
+#define ALZHEIMER_DC_0L0_PRED8x8 10
+
+// VP8 specific
+#define DC_127_PRED8x8         7
+#define DC_129_PRED8x8         8
+//@}
+
+/**
+ * Context for storing H.264 prediction functions
+ */
+typedef struct H264PredContext {
+    void(*pred4x4[9 + 3 + 3])(uint8_t *src, const uint8_t *topright,
+                              ptrdiff_t stride);
+    void(*pred8x8l[9 + 3])(uint8_t *src, int topleft, int topright,
+                           ptrdiff_t stride);
+    void(*pred8x8[4 + 3 + 4])(uint8_t *src, ptrdiff_t stride);
+    void(*pred16x16[4 + 3 + 2])(uint8_t *src, ptrdiff_t stride);
+
+    void(*pred4x4_add[2])(uint8_t *pix /*align  4*/,
+                          int16_t *block /*align 16*/, ptrdiff_t stride);
+    void(*pred8x8l_add[2])(uint8_t *pix /*align  8*/,
+                           int16_t *block /*align 16*/, ptrdiff_t stride);
+    void(*pred8x8l_filter_add[2])(uint8_t *pix /*align  8*/,
+                           int16_t *block /*align 16*/, int topleft, int topright, ptrdiff_t stride);
+    void(*pred8x8_add[3])(uint8_t *pix /*align  8*/,
+                          const int *block_offset,
+                          int16_t *block /*align 16*/, ptrdiff_t stride);
+    void(*pred16x16_add[3])(uint8_t *pix /*align 16*/,
+                            const int *block_offset,
+                            int16_t *block /*align 16*/, ptrdiff_t stride);
+} H264PredContext;
+
+void ff_h264_pred_init(H264PredContext *h, int codec_id,
+                       const int bit_depth, const int chroma_format_idc);
+void ff_h264_pred_init_aarch64(H264PredContext *h, int codec_id,
+                               const int bit_depth,
+                               const int chroma_format_idc);
+void ff_h264_pred_init_arm(H264PredContext *h, int codec_id,
+                           const int bit_depth, const int chroma_format_idc);
+void ff_h264_pred_init_x86(H264PredContext *h, int codec_id,
+                           const int bit_depth, const int chroma_format_idc);
+void ff_h264_pred_init_mips(H264PredContext *h, int codec_id,
+                            const int bit_depth, const int chroma_format_idc);
+
+#endif /* AVCODEC_H264PRED_H */