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vulkan/common: Fix off-by-one error in flush_put_bits

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If caller wrote a divisible by eight number of bits it would write an extra byte.
Also increment by to_write instead of BUF_BYTES which overly pads the bitstream.
This commit is contained in:
IndecisiveTurtle 2024-11-27 21:18:05 +02:00 committed by Lynne
parent 4e1a91112d
commit f794ed48c0
1 changed files with 2 additions and 2 deletions
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libavcodec/vulkan/common.comp
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@ -141,12 +141,12 @@ uint32_t flush_put_bits(inout PutBitContext pb)
pb.bit_buf <<= pb.bit_left;
if (pb.bit_left < BUF_BITS) {
uint to_write = ((BUF_BITS - pb.bit_left) >> 3) + 1;
uint to_write = ((BUF_BITS - pb.bit_left - 1) >> 3) + 1;
u8buf bs = u8buf(pb.buf);
for (int i = 0; i < to_write; i++)
bs[i].v = BYTE_EXTRACT(pb.bit_buf, BUF_BYTES - uint8_t(1) - i);
pb.buf = uint64_t(bs) + BUF_BYTES;
pb.buf = uint64_t(bs) + to_write;
}
pb.bit_left = BUF_BITS;