1 files changed, 86 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_seg_common.h b/media/libvpx/libvpx/vp9/common/vp9_seg_common.h
new file mode 100644
index 0000000000..5e71c2fca5
--- /dev/null
+++ b/media/libvpx/libvpx/vp9/common/vp9_seg_common.h
@@ -0,0 +1,86 @@
+/*
+ *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VPX_VP9_COMMON_VP9_SEG_COMMON_H_
+#define VPX_VP9_COMMON_VP9_SEG_COMMON_H_
+
+#include "vpx_dsp/prob.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SEGMENT_DELTADATA 0
+#define SEGMENT_ABSDATA 1
+
+#define MAX_SEGMENTS 8
+#define SEG_TREE_PROBS (MAX_SEGMENTS - 1)
+
+#define PREDICTION_PROBS 3
+
+// Segment ID used to skip background encoding
+#define BACKGROUND_SEG_SKIP_ID 3
+// Number of frames that don't skip after a key frame
+#define FRAMES_NO_SKIPPING_AFTER_KEY 20
+
+// Segment level features.
+typedef enum {
+  SEG_LVL_ALT_Q = 0,      // Use alternate Quantizer ....
+  SEG_LVL_ALT_LF = 1,     // Use alternate loop filter value...
+  SEG_LVL_REF_FRAME = 2,  // Optional Segment reference frame
+  SEG_LVL_SKIP = 3,       // Optional Segment (0,0) + skip mode
+  SEG_LVL_MAX = 4         // Number of features supported
+} SEG_LVL_FEATURES;
+
+struct segmentation {
+  uint8_t enabled;
+  uint8_t update_map;
+  uint8_t update_data;
+  uint8_t abs_delta;
+  uint8_t temporal_update;
+
+  vpx_prob tree_probs[SEG_TREE_PROBS];
+  vpx_prob pred_probs[PREDICTION_PROBS];
+
+  int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX];
+  uint32_t feature_mask[MAX_SEGMENTS];
+  int aq_av_offset;
+};
+
+static INLINE int segfeature_active(const struct segmentation *seg,
+                                    int segment_id,
+                                    SEG_LVL_FEATURES feature_id) {
+  return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id));
+}
+
+void vp9_clearall_segfeatures(struct segmentation *seg);
+
+void vp9_enable_segfeature(struct segmentation *seg, int segment_id,
+                           SEG_LVL_FEATURES feature_id);
+
+int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
+
+int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
+
+void vp9_set_segdata(struct segmentation *seg, int segment_id,
+                     SEG_LVL_FEATURES feature_id, int seg_data);
+
+static INLINE int get_segdata(const struct segmentation *seg, int segment_id,
+                              SEG_LVL_FEATURES feature_id) {
+  return seg->feature_data[segment_id][feature_id];
+}
+
+extern const vpx_tree_index vp9_segment_tree[TREE_SIZE(MAX_SEGMENTS)];
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VPX_VP9_COMMON_VP9_SEG_COMMON_H_