The pixel format is not known until the frame header is parsed.
Guessing it here only causes trouble for the caller if the guess
turns out to be wrong (and actually causes very wrong output by
avconv/avplay).
Signed-off-by: Mans Rullgard <mans@mansr.com>
The low 32 bits of a multiplication are the same for signed
and unsigned operands. Casting to unsigned before multiplying
is thus equivalent while avoiding signed overflow, which is
undefined by the C99 standard.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Fix the fate ref for prores-422_proxy by reverting the changes to it
in commit f492df0927c42da174edb674857670fc50abc5dc
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
Making 'samples' a pointer to uint8_t simplifies the DECODE
macro and reduces the amount of type casting overall.
This also fixes some signed overflows on left shift.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This function intentionally overflows the signed range on
the left shift. Using this type-punning avoids errors from
the overflow checker without disabling this test globally.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Both v->fcm and v->field_mode are used in common code, now they won't be
reset for progressive frame after interlaced one causing writing past the
frame end for example.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This will allow the caller to enumerate child contexts in a generic way
and since the API is recursive, it also allows for deeper nesting (e.g.
AVFormatContext->AVIOContext->URLContext)
This will also allow the new setting/reading API to transparently apply
to children contexts.
This code relies on the result wrapping as for unsigned
values, and the sign is not used. Thus an unsigned type
is proper here.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The bit_rate_value_minus1 and cpb_size_value_minus1 elements
allow a wider range than get_ue_golomb() supports. This
adds a get_ue_golomb_long() function supporting up to 31
leading zeros, which is the maximum for these syntax
elements, and uses it in decode_hrd_parameters().
Signed-off-by: Mans Rullgard <mans@mansr.com>
The level_code expression includes a shift which is invalid in
those cases where the value is not used. Moving the calculation
to the branch where the result is used avoids these.
Signed-off-by: Mans Rullgard <mans@mansr.com>
