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author | Cheng Chen <chengchen@google.com> | 2020-01-28 04:41:17 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2020-01-28 04:41:17 +0000 |
commit | d53645f4982bca27ec69ef41004c3d72ad1f6f22 (patch) | |
tree | ee04687bfd3e87ad073cb2483f1ba4fef231fbb3 /vp9 | |
parent | a0fa2841b87a357b85fc960837f49d0b0c37af0f (diff) | |
parent | b32cb9876c07158ca60e65c1484fa2f530c5cf90 (diff) | |
download | libvpx-d53645f4982bca27ec69ef41004c3d72ad1f6f22.tar libvpx-d53645f4982bca27ec69ef41004c3d72ad1f6f22.tar.gz libvpx-d53645f4982bca27ec69ef41004c3d72ad1f6f22.tar.bz2 libvpx-d53645f4982bca27ec69ef41004c3d72ad1f6f22.zip |
Merge "Add some description about partition info"
Diffstat (limited to 'vp9')
-rw-r--r-- | vp9/simple_encode.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/vp9/simple_encode.h b/vp9/simple_encode.h index ec2acae06..079547142 100644 --- a/vp9/simple_encode.h +++ b/vp9/simple_encode.h @@ -145,6 +145,20 @@ struct EncodeFrameResult { int num_rows_4x4; // number of row units, in size of 4. int num_cols_4x4; // number of column units, in size of 4. // The pointer to the partition information of the frame. + // The frame is divided 4x4 blocks of |num_rows_4x4| rows and + // |num_cols_4x4| columns. + // Each 4x4 block contains the current pixel position (|row|, |column|), + // the start pixel position of the partition (|row_start|, |column_start|), + // and the |width|, |height| of the partition. + // Within the same partition, all 4x4 blocks have the same |row_start|, + // |column_start|, |width| and |height|. + // For example, if the frame is partitioned to a 32x32 block, + // starting at (0, 0). Then, there're 64 4x4 blocks within this partition. + // They all have the same |row_start|, |column_start|, |width|, |height|, + // which can be used to figure out the start of the current partition and + // the start of the next partition block. + // Horizontal next: |column_start| + |width|, + // Vertical next: |row_start| + |height|. std::unique_ptr<PartitionInfo[]> partition_info; }; |