Before:                    Cortex A7      A8     A9     A53
vp9_put_8tap_smooth_4h_neon:   378.1   273.2  340.7   229.5
After:
vp9_put_8tap_smooth_4h_neon:   352.1   222.2  290.5   229.5
Signed-off-by: Martin Storsjö <martin@martin.st>

Fold the field lengths into the macro.

This makes the macro invocations much more readable, when the
lines are shorter.

This also makes it easier to use only half the registers within
the macro.
Signed-off-by: Martin Storsjö <martin@martin.st>

In order to avoid potential integer overflow change the comparison
and make sure to use the same unsigned type for both elements.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This was missing from 77c23704, fixing building.
Signed-off-by: Martin Storsjö <martin@martin.st>

Do not allocate a CUDA context for every available gpu.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

The ld1r is a leftover from the arm version, where this trick is
beneficial on some cores.

Use a single-lane load where we don't need the semantics of ld1r.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This work is sponsored by, and copyright, Google.

This avoids loading and calculating coefficients that we know will
be zero, and avoids filling the temp buffer with zeros in places
where we know the second pass won't read.

This gives a pretty substantial speedup for the smaller subpartitions.

The code size increases from 14740 bytes to 24292 bytes.

The idct16/32_end macros are moved above the individual functions; the
instructions themselves are unchanged, but since new functions are added
at the same place where the code is moved from, the diff looks rather
messy.

Before:
vp9_inv_dct_dct_16x16_sub1_add_neon:     236.7
vp9_inv_dct_dct_16x16_sub2_add_neon:    1051.0
vp9_inv_dct_dct_16x16_sub4_add_neon:    1051.0
vp9_inv_dct_dct_16x16_sub8_add_neon:    1051.0
vp9_inv_dct_dct_16x16_sub12_add_neon:   1387.4
vp9_inv_dct_dct_16x16_sub16_add_neon:   1387.6
vp9_inv_dct_dct_32x32_sub1_add_neon:     554.1
vp9_inv_dct_dct_32x32_sub2_add_neon:    5198.5
vp9_inv_dct_dct_32x32_sub4_add_neon:    5198.6
vp9_inv_dct_dct_32x32_sub8_add_neon:    5196.3
vp9_inv_dct_dct_32x32_sub12_add_neon:   6183.4
vp9_inv_dct_dct_32x32_sub16_add_neon:   6174.3
vp9_inv_dct_dct_32x32_sub20_add_neon:   7151.4
vp9_inv_dct_dct_32x32_sub24_add_neon:   7145.3
vp9_inv_dct_dct_32x32_sub28_add_neon:   8119.3
vp9_inv_dct_dct_32x32_sub32_add_neon:   8118.7

After:
vp9_inv_dct_dct_16x16_sub1_add_neon:     236.7
vp9_inv_dct_dct_16x16_sub2_add_neon:     640.8
vp9_inv_dct_dct_16x16_sub4_add_neon:     639.0
vp9_inv_dct_dct_16x16_sub8_add_neon:     842.0
vp9_inv_dct_dct_16x16_sub12_add_neon:   1388.3
vp9_inv_dct_dct_16x16_sub16_add_neon:   1389.3
vp9_inv_dct_dct_32x32_sub1_add_neon:     554.1
vp9_inv_dct_dct_32x32_sub2_add_neon:    3685.5
vp9_inv_dct_dct_32x32_sub4_add_neon:    3685.1
vp9_inv_dct_dct_32x32_sub8_add_neon:    3684.4
vp9_inv_dct_dct_32x32_sub12_add_neon:   5312.2
vp9_inv_dct_dct_32x32_sub16_add_neon:   5315.4
vp9_inv_dct_dct_32x32_sub20_add_neon:   7154.9
vp9_inv_dct_dct_32x32_sub24_add_neon:   7154.5
vp9_inv_dct_dct_32x32_sub28_add_neon:   8126.6
vp9_inv_dct_dct_32x32_sub32_add_neon:   8127.2
Signed-off-by: Martin Storsjö <martin@martin.st>

This work is sponsored by, and copyright, Google.

This avoids loading and calculating coefficients that we know will
be zero, and avoids filling the temp buffer with zeros in places
where we know the second pass won't read.

This gives a pretty substantial speedup for the smaller subpartitions.

The code size increases from 12388 bytes to 19784 bytes.

The idct16/32_end macros are moved above the individual functions; the
instructions themselves are unchanged, but since new functions are added
at the same place where the code is moved from, the diff looks rather
messy.

Before:                              Cortex A7       A8       A9      A53
vp9_inv_dct_dct_16x16_sub1_add_neon:     273.0    189.5    212.0    235.8
vp9_inv_dct_dct_16x16_sub2_add_neon:    2102.1   1521.7   1736.2   1265.8
vp9_inv_dct_dct_16x16_sub4_add_neon:    2104.5   1533.0   1736.6   1265.5
vp9_inv_dct_dct_16x16_sub8_add_neon:    2484.8   1828.7   2014.4   1506.5
vp9_inv_dct_dct_16x16_sub12_add_neon:   2851.2   2117.8   2294.8   1753.2
vp9_inv_dct_dct_16x16_sub16_add_neon:   3239.4   2408.3   2543.5   1994.9
vp9_inv_dct_dct_32x32_sub1_add_neon:     758.3    456.7    864.5    553.9
vp9_inv_dct_dct_32x32_sub2_add_neon:   10776.7   7949.8   8567.7   6819.7
vp9_inv_dct_dct_32x32_sub4_add_neon:   10865.6   8131.5   8589.6   6816.3
vp9_inv_dct_dct_32x32_sub8_add_neon:   12053.9   9271.3   9387.7   7564.0
vp9_inv_dct_dct_32x32_sub12_add_neon:  13328.3  10463.2  10217.0   8321.3
vp9_inv_dct_dct_32x32_sub16_add_neon:  14176.4  11509.5  11018.7   9062.3
vp9_inv_dct_dct_32x32_sub20_add_neon:  15301.5  12999.9  11855.1   9828.2
vp9_inv_dct_dct_32x32_sub24_add_neon:  16482.7  14931.5  12650.1  10575.0
vp9_inv_dct_dct_32x32_sub28_add_neon:  17589.5  15811.9  13482.8  11333.4
vp9_inv_dct_dct_32x32_sub32_add_neon:  18696.2  17049.2  14355.6  12089.7

After:
vp9_inv_dct_dct_16x16_sub1_add_neon:     273.0    189.5    211.7    235.8
vp9_inv_dct_dct_16x16_sub2_add_neon:    1203.5    998.2   1035.3    763.0
vp9_inv_dct_dct_16x16_sub4_add_neon:    1203.5    998.1   1035.5    760.8
vp9_inv_dct_dct_16x16_sub8_add_neon:    1926.1   1610.6   1722.1   1271.7
vp9_inv_dct_dct_16x16_sub12_add_neon:   2873.2   2129.7   2285.1   1757.3
vp9_inv_dct_dct_16x16_sub16_add_neon:   3221.4   2520.3   2557.6   2002.1
vp9_inv_dct_dct_32x32_sub1_add_neon:     753.0    457.5    866.6    554.6
vp9_inv_dct_dct_32x32_sub2_add_neon:    7554.6   5652.4   6048.4   4920.2
vp9_inv_dct_dct_32x32_sub4_add_neon:    7549.9   5685.0   6046.9   4925.7
vp9_inv_dct_dct_32x32_sub8_add_neon:    8336.9   6704.5   6604.0   5478.0
vp9_inv_dct_dct_32x32_sub12_add_neon:  10914.0   9777.2   9240.4   7416.9
vp9_inv_dct_dct_32x32_sub16_add_neon:  11859.2  11223.3   9966.3   8095.1
vp9_inv_dct_dct_32x32_sub20_add_neon:  15237.1  13029.4  11838.3   9829.4
vp9_inv_dct_dct_32x32_sub24_add_neon:  16293.2  14379.8  12644.9  10572.0
vp9_inv_dct_dct_32x32_sub28_add_neon:  17424.3  15734.7  13473.0  11326.9
vp9_inv_dct_dct_32x32_sub32_add_neon:  18531.3  17457.0  14298.6  12080.0
Signed-off-by: Martin Storsjö <martin@martin.st>

This allows reusing the macro for a separate implementation of the
pass2 function.
Signed-off-by: Martin Storsjö <martin@martin.st>

This allows reusing the macro for a separate implementation of the
pass2 function.
Signed-off-by: Martin Storsjö <martin@martin.st>

This work is sponsored by, and copyright, Google.

This reduces the code size of libavcodec/aarch64/vp9itxfm_neon.o from
19496 to 14740 bytes.

This gives a small slowdown of a couple of tens of cycles, but makes
it more feasible to add more optimized versions of these transforms.

Before:
vp9_inv_dct_dct_16x16_sub4_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub16_add_neon:   1372.2
vp9_inv_dct_dct_32x32_sub4_add_neon:    5180.0
vp9_inv_dct_dct_32x32_sub32_add_neon:   8095.7

After:
vp9_inv_dct_dct_16x16_sub4_add_neon:    1051.0
vp9_inv_dct_dct_16x16_sub16_add_neon:   1390.1
vp9_inv_dct_dct_32x32_sub4_add_neon:    5199.9
vp9_inv_dct_dct_32x32_sub32_add_neon:   8125.8
Signed-off-by: Martin Storsjö <martin@martin.st>

This work is sponsored by, and copyright, Google.

This reduces the code size of libavcodec/arm/vp9itxfm_neon.o from
15324 to 12388 bytes.

This gives a small slowdown of a couple tens of cycles, up to around
150 cycles for the full case of the largest transform, but makes
it more feasible to add more optimized versions of these transforms.

Before:                              Cortex A7       A8       A9      A53
vp9_inv_dct_dct_16x16_sub4_add_neon:    2063.4   1516.0   1719.5   1245.1
vp9_inv_dct_dct_16x16_sub16_add_neon:   3279.3   2454.5   2525.2   1982.3
vp9_inv_dct_dct_32x32_sub4_add_neon:   10750.0   7955.4   8525.6   6754.2
vp9_inv_dct_dct_32x32_sub32_add_neon:  18574.0  17108.4  14216.7  12010.2

After:
vp9_inv_dct_dct_16x16_sub4_add_neon:    2060.8   1608.5   1735.7   1262.0
vp9_inv_dct_dct_16x16_sub16_add_neon:   3211.2   2443.5   2546.1   1999.5
vp9_inv_dct_dct_32x32_sub4_add_neon:   10682.0   8043.8   8581.3   6810.1
vp9_inv_dct_dct_32x32_sub32_add_neon:  18522.4  17277.4  14286.7  12087.9
Signed-off-by: Martin Storsjö <martin@martin.st>

Fixes all sorts of configuration problems introducec by dad7a9c7
on non-Linux or non-vanilla configs. Also removes a line made redundant
in that commit.

This avoids having to count the number of frames sent to the codec
and the number of output packets received; instead just wait until
the encoder returns a buffer with the EOS flag set.
Signed-off-by: Martin Storsjö <martin@martin.st>

This makes the feature more visible and obvious.

This allows distinguishing between the internal variable name for
external libraries and the pkg-config package name. Having both
names available avoids special-casing outside the helper function
when the two identifiers do not match.

This ensures that added CPPFLAGS are validated against libc headers.

This avoids concatenation, which can't be used if the whole macro
is wrapped within another macro.

This is also arguably more readable.
Signed-off-by: Martin Storsjö <martin@martin.st>

This makes it more readable.
Signed-off-by: Martin Storsjö <martin@martin.st>

The AVFormat stream count can be larger due external factors, such as
an id3 tag appended.

Avoid an out of bound read.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This swaps which field is set when the Window Acknowledgement Size
and Set Peer BW packets are received, renames the fields in
order to clarify their role further and adds verbose comments
explaining their respective roles and how well the code currently
does what it is supposed to.

The Set Peer BW packet tells the receiver of the packet (which
can be either client or server) that it should not send more data
if it already has sent more data than the specified number of bytes,
without receiving acknowledgement for them. Actually checking this
limit is currently not implemented.

In order to be able to check that properly, one can send the
Window Acknowledgement Size packet, which tells the receiver of the
packet that it needs to send Acknowledgement packets
(RTMP_PT_BYTES_READ) at least after receiving a given number of bytes
since the last Acknowledgement.

Therefore, when we receive a Window Acknowledgement Size packet,
this sets the maximum number of bytes we can receive without sending
an Acknowledgement; therefore when handling this packet we should set
the receive_report_size field (previously client_report_size).
Signed-off-by: Martin Storsjö <martin@martin.st>

Also rename comments and log messages accordingly,
and add clarifying comments for some hardcoded values.

The previous names were taken from older, reverse engineered
references.

These names match the official public rtmp specification, and
matches the names used by wirecast in annotating captured
streams. These names also avoid hardcoding the roles of server
and client, since the handling of them is irrelevant of whether
we act as server or client.

The RTMP_PT_PING type maps to RTMP_PT_USER_CONTROL.

The SERVER_BW and CLIENT_BW types are a bit more intertwined;
RTMP_PT_SERVER_BW maps to RTMP_PT_WINDOW_ACK_SIZE and
RTMP_PT_CLIENT_BW maps to RTMP_PT_SET_PEER_BW.
Signed-off-by: Martin Storsjö <martin@martin.st>

Simplifies checking for conditions in external library headers and
aborting if said conditions are not met.

Simplifies checking for external library headers and aborting if
the external library support was requested, but is not available.

Weak dependencies on external libraries do not obviate having to
explicitly enable these libraries, so the weak dependency does not
simplify the configure command line nor have any real effect.