add line_spacing parameter to set the space between two lines

Based on an idea by: Leandro Santiago <leandrosansilva@gmail.com>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

when push hls to http server, the old segemnts can not delete by hls formats.
so add the http option into hls_delete_old_segments
Reported-by: Yin Jiaoyuan <yinjiaoyuan@163.com>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

Also remove the redundant casts which were hiding the error here.

(cherry picked from commit 7081620a)

Deprecates struct vaapi_context and the installed header vaapi.h,
to be removed at the next version bump.

(cherry picked from commit 851960f6)

Most of the functionality here has moved into lavc.

(cherry picked from commit 3e8651a7)

(cherry picked from commit ea8b730d)
Signed-off-by: Mark Thompson <sw@jkqxz.net>

(cherry picked from commit ccd0316f)

(cherry picked from commit 520fb772)

(cherry picked from commit 102e13c3)

(cherry picked from commit 2fe93244)

Moves much of the setup logic for VAAPI decoding into lavc; the user
now need only provide the hw_frames_ctx.

(cherry picked from commit 123ccd07)
(cherry picked from commit 5e879b54)
(cherry picked from commit 0aec37e6)
(cherry picked from commit cfa4eb4f)

The lowest supported VAAPI version is 0.34 (checked at configure
time), so this test is no longer needed.

(cherry picked from commit 5a667322)

(cherry picked from commit 01d6f84f)

(cherry picked from commit ee906129)

(cherry picked from commit 03adfe91)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

* commit 'f450cc7b':
  h264: eliminate decode_postinit()

Also includes fixes from 1f7b4f9a and e344e651.

Original patch replace H264Context.next_output_pic (H264Picture *) by
H264Context.output_frame (AVFrame *). This change is discarded as it
is incompatible with the frame reconstruction and motion vectors
display code which needs the extra information from the H264Picture.
Merged-by: Clément Bœsch <u@pkh.me>
Merged-by: Matthieu Bouron <matthieu.bouron@gmail.com>

It is done unconditionally in ff_h264_field_end()

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes #2056.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

We can pick the correct slice index directly from the ID3D11VideoDecoderOutputView
casted from data[3].

Also added myself as maintainer for DXVA2 and D3D11VA.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

No need to loop through the known surfaces, we'll use the requested surface
anyway.

The loop is only done for DXVA2.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This fixes heap-buffer-overflows in libopenmpt caused by interpreting
the negative size value as unsigned size_t.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Reviewed-by: Jörn Heusipp <osmanx@problemloesungsmaschine.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Reviewed-by: Rostislav Pehlivanov <atomnuker@gmail.com>

When support for this was added the details weren't yet finalized.
This is no longer the case.
Fixes writing of mkv/webm files with HDR.
Reported-by: Kagami Hiiragi <kagami@genshiken.org>
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Reviewed-by: James Almer <jamrial@gmail.com>

This is cherrypicked from libav commit
85ad5ea7.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This is cherrypicked from libav commit
65074791.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This is cherrypicked from libav commit
c536e5e8.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This work is sponsored by, and copyright, Google.

Previously all subpartitions except the eob=1 (DC) case ran with
the same runtime:

vp9_inv_dct_dct_16x16_sub16_add_neon:   1373.2
vp9_inv_dct_dct_32x32_sub32_add_neon:   8089.0

By skipping individual 8x16 or 8x32 pixel slices in the first pass,
we reduce the runtime of these functions like this:

vp9_inv_dct_dct_16x16_sub1_add_neon:     235.3
vp9_inv_dct_dct_16x16_sub2_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub4_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub8_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub12_add_neon:   1372.1
vp9_inv_dct_dct_16x16_sub16_add_neon:   1372.1
vp9_inv_dct_dct_32x32_sub1_add_neon:     555.1
vp9_inv_dct_dct_32x32_sub2_add_neon:    5190.2
vp9_inv_dct_dct_32x32_sub4_add_neon:    5180.0
vp9_inv_dct_dct_32x32_sub8_add_neon:    5183.1
vp9_inv_dct_dct_32x32_sub12_add_neon:   6161.5
vp9_inv_dct_dct_32x32_sub16_add_neon:   6155.5
vp9_inv_dct_dct_32x32_sub20_add_neon:   7136.3
vp9_inv_dct_dct_32x32_sub24_add_neon:   7128.4
vp9_inv_dct_dct_32x32_sub28_add_neon:   8098.9
vp9_inv_dct_dct_32x32_sub32_add_neon:   8098.8

I.e. in general a very minor overhead for the full subpartition case due
to the additional cmps, but a significant speedup for the cases when we
only need to process a small part of the actual input data.

This is cherrypicked from libav commits
cad42fad and
a0c443a3.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>