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When scaling backward predicted MVs in second B-field, the scaling table is
opposite of that for P field pictures; i.e. first field P table will be used as
second field B table and second field P table will be used as first field B
table. This is not documented in the spec, but exists in the ref. decoder.
This fixes SA10139.
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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Cosmetics: break some lines and reformat TODOs
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Fixes SA00072, SA00073, SA10150, SA10151, Issue2076
Improves SA10153
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Pulldown flags are being set incorrectly and AVFrame->repeat_pict is not
being set. Also, skipped frames exit header parsing too early and do not
set pulldown flags appropriately. Ticks_per_frame needs to be set and
time_base adjusted so player can extend frame duration by a field time.
This fixes problems encountered when attempting to transcode HD-DVD EVOB
files with HandBrake. Also makes these files play smoothly in avplay.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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In some places 0/mb_height were used in place of start_mb_y/end_mb_y.
Fixes SA00049, SA00058, SA10091, SA10097, SA10131, SA20021, SA30030
Improves PSNR in SA00054, SA00059, SA00060, SA10096, SA10098, SA20022,
SA30031, SA30032, SA40012, SA40013
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Previously, we would leave the left edge uninitialized, which led to
CBP prediction errors on slice edges, e.g. in SA10098.vc1.
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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It's more readable and less prone to breakage.
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FF_COMMON_FRAME holds the contents of the AVFrame structure and is also copied
to struct Picture. Replace by an embedded AVFrame structure in struct Picture.
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Before this, almost all module groups have been used for grouping functions
and fields in structures semantically. This causes them to not appear
properly in the file documentation and needlessly clutters up the "Modules"
index.
Additionally, this commit streamlines some spelling and appearances.
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read_sequence_header can change width/height; therefore, re-initialize
all tables if width/height changed
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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This reverts commit f8bed30d8b176fa030f6737765338bb4a2bcabc9. The reason
for this is that the overlap filter, which runs after IDCT, should run
on unclamped values, and thus IDCT and put_pixels() cannot be merged if
we want to attempt to be bitexact.
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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PROFILE_ADVANCED doesn't set res_fasttx, so make that a special case
in the condition that decides which IDCT to use (and whether to read
coefficients transposed or not).
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
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IDCT coefficients are read transposed, but simple_idct does not expect
this. Therefore, only do tranposed coefficient reading if we're not
using simple_idct.
Fixes http://forum.videolan.org/viewtopic.php?f=14&t=89651
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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It has been deprecated for about five years, skip_idct/skip_frame should
be used instead.
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Also reset coded_block at each new slice, fixes problems in slice playback.
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Introduce end: and err: labels at the end of vc1_decode_frame(), which
will clean up allocated memory consistently.
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Merging these functions allows merging some loops, which makes the
results (particularly after SIMD optimizations) much faster.
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Advantage is that it allows us to combine several loops into a single
one, and these can eventually be merged into the IDCT itself. Also, it
allows us to remove vc1_put_block(), and makes CODEC_FLAG_GRAY faster.
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Advanced profile never uses "range reduction", so vc1_put_block() quite
literally just calls put_pixels_clamped() from vc1_decode_i_blocks_adv().
By inlining the function, we can prevent calling IDCT8x8 if
CODEC_FLAG_GRAY is set, and we don't have to scale the coeffs in the
[0,256] range, but can instead use put_signed_pixels_clamped().
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Patch discussed and taken from https://roundup.ffmpeg.org/issue2584
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None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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Originally committed as revision 25209 to svn://svn.ffmpeg.org/ffmpeg/trunk
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All horizontal edges must be filtered before all vertical edges
Originally committed as revision 24206 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24205 to svn://svn.ffmpeg.org/ffmpeg/trunk
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As a side effect it will also decode a lot of P-frames from those.
Originally committed as revision 24161 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 23831 to svn://svn.ffmpeg.org/ffmpeg/trunk
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This should fix chroma issues in WMV3/VC-1 decoder with avfilter enabled.
Originally committed as revision 23370 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
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is deprecated and will be dropped at the next major bump.
Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
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MPV_common_init(), so calling both is redundant and leads to memory
leaks in WMV3/VC-1 decoder. Thus use only the first function in
WMV3/VC-1 decoder initialization.
Originally committed as revision 22024 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 21932 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 21102 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 20201 to svn://svn.ffmpeg.org/ffmpeg/trunk
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search for real extradata start instead of always skipping one byte.
Patch by Andrew Dennison gmailify(${name}d, lists)
Thread: [PATCH] Fix VC1 "Incomplete extradata" for mkv files generated by eac3to
Originally committed as revision 20178 to svn://svn.ffmpeg.org/ffmpeg/trunk
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