sparse_array: optimizations for lossy case
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@ -200,6 +200,21 @@ static OPJ_BOOL opj_sparse_array_int32_read_or_write(
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for (; k < x_incr; k++) {
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dest_ptr[k * buf_col_stride] = src_ptr[k];
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}
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} else if (x_incr >= 8 && buf_col_stride == 8) {
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for (j = 0; j < y_incr; j++) {
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OPJ_UINT32 k;
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for (k = 0; k < (x_incr & ~3U); k += 4) {
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dest_ptr[k * buf_col_stride] = src_ptr[k];
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dest_ptr[(k + 1) * buf_col_stride] = src_ptr[k + 1];
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dest_ptr[(k + 2) * buf_col_stride] = src_ptr[k + 2];
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dest_ptr[(k + 3) * buf_col_stride] = src_ptr[k + 3];
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}
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for (; k < x_incr; k++) {
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dest_ptr[k * buf_col_stride] = src_ptr[k];
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}
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dest_ptr += buf_line_stride;
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src_ptr += block_width;
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}
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} else {
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/* General case */
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for (j = 0; j < y_incr; j++) {
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@ -254,6 +269,21 @@ static OPJ_BOOL opj_sparse_array_int32_read_or_write(
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src_ptr += buf_line_stride;
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dest_ptr += block_width;
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}
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} else if (x_incr >= 8 && buf_col_stride == 8) {
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for (j = 0; j < y_incr; j++) {
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OPJ_UINT32 k;
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for (k = 0; k < (x_incr & ~3U); k += 4) {
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dest_ptr[k] = src_ptr[k * buf_col_stride];
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dest_ptr[k + 1] = src_ptr[(k + 1) * buf_col_stride];
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dest_ptr[k + 2] = src_ptr[(k + 2) * buf_col_stride];
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dest_ptr[k + 3] = src_ptr[(k + 3) * buf_col_stride];
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}
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for (; k < x_incr; k++) {
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dest_ptr[k] = src_ptr[k * buf_col_stride];
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}
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src_ptr += buf_line_stride;
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dest_ptr += block_width;
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}
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} else {
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/* General case */
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for (j = 0; j < y_incr; j++) {
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