diff options
| author | Even Rouault <even.rouault@spatialys.com> | 2017-09-01 16:31:10 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2017-09-01 22:23:29 +0200 |
| commit | 7017e67a01c378a7a1ee5e34dd544c793b5c23e4 (patch) | |
| tree | 004d71810086ce991edcd1d6c0f2ad274f807402 /src/lib/openjp2/sparse_array.c | |
| parent | 8a17be8945f6f8fcae3f9e5c7c4988e971d245ee (diff) | |
sparse_array: optimizations for lossy case
Diffstat (limited to 'src/lib/openjp2/sparse_array.c')
| -rw-r--r-- | src/lib/openjp2/sparse_array.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/lib/openjp2/sparse_array.c b/src/lib/openjp2/sparse_array.c index 48c4b23b..40459bdb 100644 --- a/src/lib/openjp2/sparse_array.c +++ b/src/lib/openjp2/sparse_array.c @@ -200,6 +200,21 @@ static OPJ_BOOL opj_sparse_array_int32_read_or_write( for (; k < x_incr; k++) { dest_ptr[k * buf_col_stride] = src_ptr[k]; } + } else if (x_incr >= 8 && buf_col_stride == 8) { + for (j = 0; j < y_incr; j++) { + OPJ_UINT32 k; + for (k = 0; k < (x_incr & ~3U); k += 4) { + dest_ptr[k * buf_col_stride] = src_ptr[k]; + dest_ptr[(k + 1) * buf_col_stride] = src_ptr[k + 1]; + dest_ptr[(k + 2) * buf_col_stride] = src_ptr[k + 2]; + dest_ptr[(k + 3) * buf_col_stride] = src_ptr[k + 3]; + } + for (; k < x_incr; k++) { + dest_ptr[k * buf_col_stride] = src_ptr[k]; + } + dest_ptr += buf_line_stride; + src_ptr += block_width; + } } else { /* General case */ for (j = 0; j < y_incr; j++) { @@ -254,6 +269,21 @@ static OPJ_BOOL opj_sparse_array_int32_read_or_write( src_ptr += buf_line_stride; dest_ptr += block_width; } + } else if (x_incr >= 8 && buf_col_stride == 8) { + for (j = 0; j < y_incr; j++) { + OPJ_UINT32 k; + for (k = 0; k < (x_incr & ~3U); k += 4) { + dest_ptr[k] = src_ptr[k * buf_col_stride]; + dest_ptr[k + 1] = src_ptr[(k + 1) * buf_col_stride]; + dest_ptr[k + 2] = src_ptr[(k + 2) * buf_col_stride]; + dest_ptr[k + 3] = src_ptr[(k + 3) * buf_col_stride]; + } + for (; k < x_incr; k++) { + dest_ptr[k] = src_ptr[k * buf_col_stride]; + } + src_ptr += buf_line_stride; + dest_ptr += block_width; + } } else { /* General case */ for (j = 0; j < y_incr; j++) { |