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It is only used by the decoders' lowres code, so only initialize
it for decoders.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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This has the advantage of not having to check for whether
a given MpegEncContext is actually a decoder or an encoder
context at runtime.
To do so, mpv_reconstruct_mb_internal() is moved into a new
template file that is included by both mpegvideo_enc.c
and mpegvideo_dec.c; the decoder-only code (mainly lowres)
are also moved to mpegvideo_dec.c. The is_encoder checks are
changed to #if IS_ENCODER in order to avoid having to include
headers for decoder-only functions in mpegvideo_enc.c.
This approach also has the advantage that it is easy to adapt
mpv_reconstruct_mb_internal() to using different structures
for decoders and encoders (e.g. the check for whether
a macroblock should be processed for the encoder or not
uses MpegEncContext elements that make no sense for decoders
and should not be part of their context).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Affected the mpeg2-field-enc FATE-test.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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(I think the check for !reference is unnecessary.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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They are already synced generically in update_context_from_thread()
in pthread_frame.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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The fields in question were removed in
759001c534287a96dc96d1e274665feb7059145d.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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It is the proper place to set it, directly besides mb_width and
mb_stride. The reason for doing it the way it is done now seems
to be that the code does not create more slice contexts than necessary
(i.e. not more than one per row), so that this number needs to be
known before setting the number of slices. But this can always be
arranged by just moving the code that sets the number of slices.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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These values are only used by mpegvideo-based decoders.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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This piece of code has been added in an already commented-out state
in commit 158c7f059c3906b0116ae73a7669a3bb7bc570bb. It certainly
doesn't make sense now (if ever) because new_picture_ptr it used
has been removed in 6571e41dcdee4655237bca0a3277df8976167aee
(and new_picture is only used for encoding).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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MpegEncContext is used by many different codecs and
every one of these uses just a subset of its fields.
If one tries to separate this and e.g. add a real MpegContext
and extension structures (say MpegDecContext and MpegEncContext),
one runs into two difficulties:
a) Some code is shared between decoder and encoder of
the same format and they therefore use the same contexts,
either MpegEncContext itself or identical extensions thereof.
The latter is the case for H.261 as well as WMV2.
b) In case of slice threading, the generic code can only allocate
and initialize the structure it knows about; right now this is
an MpegEncContext. If the codec has an even more extensive structure,
it is only available for the main thread's MpegEncContext.
Fixing this would involve making ff_mpv_common_init() aware
of the size the size of slice context to allocate and would be
part of separating the main thread's context from the slice contexts
in general.
This commit only intends to tackle the first issue by adding
a pointer to MpegEncContext that codecs can set to a common
context so that the aforementioned codecs can use this context
(together with the MpegEncContext) in their common code.
This will allow to move fields only used by the main thread
to more specialized contexts.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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This is in preparation for further commits that will stop
using ThreadFrame for frame-threaded codecs that don't use
ff_thread_(await|report)_progress(); the API for those codecs
having inter-frame depdendencies will live in threadframe.h.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Always zero since 4d2858deac5213eaddfdc06f98379b6325d7b953.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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This will allow to disable this code altogether when
all decoders are disabled.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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