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New CLPF: New kernel and RDO for strength and block size

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This commit ports a CLPF change from aom/master by manually
cherry-picking:
7560123c066854aa40c4685625454aea03410b18

Change-Id: I61eb08862a101df74a6b65ece459833401e81117
This commit is contained in:
Steinar Midtskogen
2016-05-06 13:48:20 +02:00
committed by Yaowu Xu
parent bf0431276d
commit d06588ab18
10 changed files with 467 additions and 134 deletions
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17
av1/encoder/bitstream.c
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@@ -2590,7 +2590,22 @@ static void encode_loopfilter(AV1_COMMON *cm, struct aom_write_bit_buffer *wb) {
#if CONFIG_CLPF
static void encode_clpf(const AV1_COMMON *cm, struct aom_write_bit_buffer *wb) {
aom_wb_write_literal(wb, cm->clpf, 1);
aom_wb_write_literal(wb, cm->clpf_strength, 2);
if (cm->clpf_strength) {
aom_wb_write_literal(wb, cm->clpf_size, 2);
if (cm->clpf_size) {
int i;
// TODO(stemidts): The number of bits to transmit could be
// implicitly deduced if transmitted after the filter block or
// after the frame (when it's known whether the block is all
// skip and implicitly unfiltered). And the bits do not have
// 50% probability, so a more efficient coding is possible.
aom_wb_write_literal(wb, cm->clpf_numblocks, av1_clpf_maxbits(cm));
for (i = 0; i < cm->clpf_numblocks; i++) {
aom_wb_write_literal(wb, cm->clpf_blocks[i], 1);
}
}
}
}
#endif