/** Converts a vector in coding scan order witht he PVQ partitions
* laid out one after another into a coefficient block in raster
* order. This works in stages in the reverse order of raster->scan
* order; the 16x16 conversion is applied to the coefficients that
* don't appear in an 8x8 block, then the 8x8 applied to the 8x8 block
* sans the 4x4 block it contains, then 4x4 is converted sans DC.
*
* @param [out] dst destination coefficient block
* @param [in] stride destination vector row stride
* @param [in] src source vector
* @param [in] n block size (along one side)
* @param [in] interleave de-interleaves entries for
the scalar (non-pvq) case
*/
void od_coding_order_to_raster(od_coeff *dst, int stride, od_coeff *src,
int n, int interleave) {
od_raster_from_band(&od_layout4, dst, stride, src+1);
if (n >= 8) {
if (interleave) {
int i;
od_coeff tmp1[1024];
for (i = 0; i < 16; i++) {
tmp1[i] = src[16 + i];
}
for (i = 0; i < 8; i++) {
src[16+i] = tmp1[2*i];
src[24+i] = tmp1[2*i + 1];
}
}
od_raster_from_band(&od_layout8, dst, stride, src+16);
}
if (n >= 16) {
if (interleave) {
int i;
od_coeff tmp1[1024];
for (i = 0; i < 64; i++) {
tmp1[i] = src[64 + i];
}
for (i = 0; i < 32; i++) {
src[64+i] = tmp1[2*i];
src[96+i] = tmp1[2*i + 1];
}
}
od_raster_from_band(&od_layout16, dst, stride, src+64);
}
dst[0] = src[0];
}
/** Converts a vector in coding scan order witht he PVQ partitions
* laid out one after another into a coefficient block in raster
* order. This works in stages in the reverse order of raster->scan
* order; the 16x16 conversion is applied to the coefficients that
* don't appear in an 8x8 block, then the 8x8 applied to the 8x8 block
* sans the 4x4 block it contains, then 4x4 is converted sans DC.
*
* @param [out] dst destination coefficient block
* @param [in] stride destination vector row stride
* @param [in] src source vector
* @param [in] n block size (along one side)
* @param [in] interleave de-interleaves entries for
the scalar (non-pvq) case
*/
void od_coding_order_to_raster(od_coeff *dst, int stride, od_coeff *src,
int n) {
/* TODO - Rewrite these as a loop. */
od_raster_from_band(&OD_LAYOUT4, dst, stride, src + 1);
if (n >= 8) {
od_raster_from_band(&OD_LAYOUT8, dst, stride, src + 16);
}
if (n >= 16) {
od_raster_from_band(&OD_LAYOUT16, dst, stride, src + 64);
}
if (n >= 32) {
od_raster_from_band(&OD_LAYOUT32, dst, stride, src + 256);
}
if (n >= 64) {
od_raster_from_band(&OD_LAYOUT64, dst, stride, src + 1024);
}
dst[0] = src[0];
}
/** Converts a vector in coding scan order witht he PVQ partitions
* laid out one after another into a coefficient block in raster
* order. This works in stages in the reverse order of raster->scan
* order; the 16x16 conversion is applied to the coefficients that
* don't appear in an 8x8 block, then the 8x8 applied to the 8x8 block
* sans the 4x4 block it contains, then 4x4 is converted sans DC.
*
* @param [out] dst destination coefficient block
* @param [in] stride destination vector row stride
* @param [in] src source vector
* @param [in] n block size (along one side)
*/
void od_coding_order_to_raster(od_coeff *dst, int stride, const od_coeff *src,
int n) {
int bs;
/* src + 1 because DC is not included for 4x4 blocks. */
od_raster_from_band(OD_LAYOUTS[0], dst, stride, src + 1);
for (bs = 1; bs < OD_NBSIZES; bs++) {
int size;
int offset;
/* Length of block size > 4 */
size = 1 << (OD_LOG_BSIZE0 + bs);
/* Offset is the size of the previous block squared. */
offset = 1 << 2*(OD_LOG_BSIZE0 - 1 + bs);
if (n >= size) {
/* 3 16x16 bands come after 3 8x8 bands, which come after 2 4x4 bands. */
od_raster_from_band(OD_LAYOUTS[bs], dst, stride, src + offset);
}
}
dst[0] = src[0];
}
