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avcodec/cbs_h265: move the payload_extension_present check into its own function

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Will be reused in the following patch.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2020-04-20 17:33:55 -03:00
parent bdfc1d3cd3
commit 3a41bac4e2
2 changed files with 13 additions and 6 deletions
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libavcodec/cbs_h265_syntax_template.c
+3 -6
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@@ -1572,7 +1572,7 @@ static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
int err, i, length;
#ifdef READ
int start_pos, end_pos, bits_left;
int start_pos, end_pos;
start_pos = get_bits_count(rw);
#endif
@@ -1651,12 +1651,9 @@ static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
}
#ifdef READ
// payload_extension_present() - true if we are before the last 1-bit
// in the payload structure, which must be in the last byte.
end_pos = get_bits_count(rw);
bits_left = *payload_size * 8 - (end_pos - start_pos);
if (bits_left > 0 &&
(bits_left > 7 || ff_ctz(show_bits(rw, bits_left)) < bits_left - 1))
if (cbs_h265_payload_extension_present(rw, *payload_size,
end_pos - start_pos))
flag(use_alt_cpb_params_flag);
else
infer(use_alt_cpb_params_flag, 0);