Commit Graph

956 Commits

Author SHA1 Message Date
Mans Rullgard
28fff0d974 h264: use templates to avoid excessive inlining
Instead of inlining everything into ff_h264_hl_decode_mb(), use
explicit templating to create versions of the called functions
with constant parameters filled in.  This greatly speeds up
compilation of h264.c and reduces the code size without any
measurable impact on performance.

Compilation time for h264.c on an i7 goes from 30s to 5.5s.
Code size is reduced by 430kB.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-07-05 11:50:18 +01:00
Diego Biurrun
09f211987c misc typo and wording fixes 2012-07-03 17:35:11 +02:00
Mans Rullgard
30f515091c h264: allow cropping to AVCodecContext.width/height
Override the frame size from the SPS with AVCodecContext values
if the latter specify a size smaller by less than one macroblock.
This is required for correct cropping of MOV files from Canon cameras.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-06-09 15:08:52 +01:00
Ronald S. Bultje
732f9fcfe5 h264: additional protection against unsupported size/bitdepth changes.
Fixes crashes in codepaths not covered by original checks.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-05-02 10:19:37 -07:00
Diego Biurrun
0becb07842 h264: Factorize declaration of mb_sizes array. 2012-04-05 17:17:22 +02:00
Anton Mitrofanov
14af74e9a0 h264: fix 4:2:2 PCM-macroblocks decoding
Fixes bug 239.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-04-04 19:34:39 +02:00
Diego Biurrun
3dde147ff9 cosmetics: Consistently place static, inline and av_cold attributes/keywords. 2012-04-04 14:54:13 +02:00
Diego Biurrun
b691fd7a4d h264: drop ff_h264_ prefix from static function ff_h264_decode_rbsp_trailing() 2012-03-30 17:47:12 +02:00
Diego Biurrun
9ad80ef3db h264: Make ff_h264_decode_end() static, it is not used externally.
Also drop the now unnecessary ff_ prefix from its name.
2012-03-30 17:46:52 +02:00
Ronald S. Bultje
1e26a48fa2 h264: fix deadlocks on incomplete reference frame decoding.
If decoding a second complementary field, and the first was
decoded in our thread, mark decoding of that field as complete.
If decoding fails, mark the decoded field/frame as complete.
Do not allow switching between field modes or field/frame mode
between slices within the same field/frame. Ensure that two
subsequent fields cover top/bottom (rather than top/frame,
bottom/frame or such nonsense situations).

Fixes various deadlocks when decoding samples with errors in
reference frames.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-03-16 15:31:00 -07:00
Diego Biurrun
e5d403720e h264: K&R formatting cosmetics
Also remove some disabled code and fix a few comment typos.
2012-03-16 20:35:37 +01:00
Ronald S. Bultje
e0febda22d h264: stricter reference limit enforcement.
Progressive images can have only 16 references, error out if there are
more, since the data is almost certainly corrupt, and the invalid value
will lead to random crashes or invalid writes later on.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-03-14 13:24:49 -07:00
Michael Niedermayer
3aa661ec56 h264: improve parsing of broken AVC SPS
Parsing the entire NAL as SPS fixes decoding of some AVC bitstreams
with broken escaping. Since the size of the NAL unit is known and
checked against the buffer end we can parse it entirely without buffer
overreads.

Fixes playback of
http://streams.videolan.org/streams/mp4/Mr_MrsSmith-h264_aac.mp4

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
2012-03-13 00:31:52 +01:00
Janne Grunau
8a6037c390 Revert "h264: clear trailing bits in partially parsed NAL units"
This reverts commit 729ebb2f18.

There was an off-by-one error in the bit mask calculation clearing
actually the last valid bit and causing
http://bugzilla.libav.org/show_bug.cgi?id=227

The broken sample (Mr_MrsSmith-h264_aac.mp4) the commit was fixing
does not work after correcting the off-by-one error.

CC: libav-stable@libav.org
2012-03-12 22:46:56 +01:00
Alex Converse
3574a85ce5 Replace computations of remaining bits with calls to get_bits_left(). 2012-03-05 11:22:11 -08:00
Diego Biurrun
324deaa268 Replace AVFrame pointer type punning by proper struct member assignments. 2012-03-01 23:11:13 +01:00
Diego Biurrun
47c0ac96aa Replace AVFrame pointer casts by proper struct member accesses. 2012-03-01 23:11:11 +01:00
Ronald S. Bultje
0ce4fe482c h264: error out on invalid bitdepth.
Fixes invalid reads while initializing the dequant tables, which uses
the bit depth to determine the QP table size.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-03-01 12:15:51 -08:00
Martin Storsjö
efd29844eb mpegvideo: Add ff_ prefix to nonstatic functions
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-02-15 22:07:23 +02:00
Martin Storsjö
9cf0841ef3 dsputil: Add ff_ prefix to the dsputil*_init* functions
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-02-15 22:06:34 +02:00
Ronald S. Bultje
45b7bd7c53 h264: disallow constrained intra prediction modes for luma.
Conversion of the luma intra prediction mode to one of the constrained
("alzheimer") ones can happen by crafting special bitstreams, causing
a crash because we'll call a NULL function pointer for 16x16 block intra
prediction, since constrained intra prediction functions are only
implemented for chroma (8x8 blocks).

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-02-09 22:57:01 -08:00
Diego Biurrun
631f96f959 h264: Split h264-test off into a separate file - golomb-test.c.
The new name is more appropriate as only golomb functions are tested.
2012-01-31 19:56:12 +01:00
Diego Biurrun
4ff46af039 h264-test: cleanup: drop timer invocations, commented out code and other cruft 2012-01-31 19:56:11 +01:00
Diego Biurrun
3856a2aaa6 h264-test: Remove unused DSP and AVCodec contexts and related init calls.
This also avoids a segfault on startup.
2012-01-31 19:56:09 +01:00
Diego Biurrun
55b9ef18e4 cabac: split cabac.h into declarations and function definitions
This fixes standalone compilation of some decoders with --disable-optimizations.
cabac.h defines some inline functions that use symbols from cabac.c.  Without
optimizations these inline functions are not eliminated and linking fails with
references to non-existing symbols.

Splitting the inline functions off into their own header and only #including
it in the places where the inline functions are used allows #including cabac.h
from anywhere without ill effects.
2012-01-12 23:08:23 +01:00
Diego Biurrun
a7e3cb9d32 h264-test: Initialize AVCodecContext.av_class.
This fixes a segfault on startup.

Also remove a commented-out and completely unused variable.
2012-01-07 22:13:10 +01:00
Diego Biurrun
301fb92131 h264: Only use symbols from the SVQ3 decoder under proper conditionals.
Fixes --disable-everything --enable-decoder=h264 --disable-optimizations.
2012-01-06 13:37:53 +01:00
Ronald S. Bultje
400ba1d735 h264: return index in buffer on end-of-sequence.
Fixes hangs if the last packet contains an end-of-sequence NAL unit,
bug 158.
2012-01-03 19:50:22 -08:00
Diego Biurrun
54e68fb3b8 Merge some declarations and initializations.
This fixes compilation failures related to START_TIMER/STOP_TIMER macros and
-Werror=declaration-after-statement.  START_TIMER declares variables and thus
may not be placed after statements outside of a new block.
2012-01-04 01:28:28 +01:00
Janne Grunau
881a5e047d mpegenc: use avctx->slices as number of slices
Adds a new member to MpegEncContext to hold the number of used slice
contexts. Fixes segfaults with '-threads 17 -thread_type slice' and
fate-vsynth{1,2}-mpeg{2,4}thread{,_ilace} with --disable-pthreads.
2012-01-02 19:20:23 +01:00
Alexander Strange
bc6a3bd4a5 h264: Fix a possible overread in decode_nal_units()
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-12-23 08:32:18 +01:00
Janne Grunau
729ebb2f18 h264: clear trailing bits in partially parsed NAL units
Trailing bits are likely to be non-zero if the NAL unit is truncated.
Clearing the bits make overreads of the bitstream less likely in this
case. Fixes playback of
http://streams.videolan.org/streams/mp4/Mr_MrsSmith-h264_aac.mp4 which
has a forbidden byte sequence of 0x00 0x00 0x00 in it SPS.
2011-12-19 23:14:21 +01:00
Janne Grunau
358ea75e9e Revert "h264: skip start code search if the size of the nal unit is known"
This reverts commit 87eebb3454.
2011-12-19 03:24:32 +01:00
Janne Grunau
87eebb3454 h264: skip start code search if the size of the nal unit is known
Start code emulation prevention is only required in Annex B bytestream
packed NAL units. For other coding formats the size is already known.
Looking for a start code prefix can result in false positives like in
http://streams.videolan.org/streams/mp4/Mr_MrsSmith-h264_aac.mp4
which has a false positive in the SPS.
2011-12-18 23:52:53 +01:00
Ronald S. Bultje
0b4c323213 h264: don't drop B-frames after next keyframe on POC reset.
The keyframe after a POC reset may not be the first to be returned to
the user. Therefore, don't reset the expected next POC once we return
a keyframe to the user, but once we know that the next frame in the
return-queue is a keyframe.
2011-12-16 11:24:18 -08:00
Luca Barbato
63ccd46687 lavc: introduce ER_MB_END and ER_MB_ERROR
Simplify a little error resilience calls

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2011-12-13 16:20:58 +01:00
Luca Barbato
5bf2ac2b37 error_resilience: use the ER_ namespace
Add the namespace to {AC_,DC_,MV_}{END,ERROR} macros

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2011-12-13 16:20:58 +01:00
Diego Biurrun
58c42af722 doxygen: misc consistency, spelling and wording fixes 2011-12-12 23:06:23 +01:00
Dustin Brody
5b22d6e132 lavc: convert error_recognition to err_recognition.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-12-12 19:42:50 +01:00
Mans Rullgard
5695ae46f8 h264: remove useless cast
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-12-12 00:02:48 +00:00
Mans Rullgard
373211d828 Remove extraneous semicolons
These semicolons cause invalid empty top-level declarations.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-12-11 17:23:24 +00:00
Diego Biurrun
da9cea77e3 Fix a bunch of common typos. 2011-12-11 00:32:25 +01:00
Ronald S. Bultje
adedd840e2 h264: fix frame reordering code.
Fixes fate-h264-conformance-{mr2_tandberg_e,mr3_tandberg_b} without
requiring -strict 1.
2011-12-03 08:24:27 -08:00
Ronald S. Bultje
2574f08d4c h264: cap max has_b_frames at MAX_DELAYED_PIC_COUNT - 1.
This prevents frame allocation overflows, and fixed
fate-h264-conformance-mr3_tandberg_b with 2 threads.
2011-12-01 12:46:28 -08:00
Ronald S. Bultje
db431f7efe h264: add support for decoding planar RGB images. 2011-11-24 08:25:36 -08:00
Justin Ruggles
f3a29b750a avcodec: move some AVCodecContext fields to an internal struct.
A new field, AVCodecContext.internal is used to hold a new struct
AVCodecInternal, which has private fields that are not codec-specific and are
used by general libavcodec functions.

Moved internal_buffer, internal_buffer_count, and is_copy.
2011-11-19 10:01:05 -05:00
Sebastien Zwickert
ac3dbb4d58 hwaccel: OS X Video Decoder Acceleration (VDA) support.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2011-11-14 16:07:32 +01:00
Ronald S. Bultje
ea2bb12e3e h264: improve calculation of codec delay.
Fixes the following conformance suite samples:
HCBP1_HHI_A.264, HCBP2_HHI_A.264, HCMP1_HHI_A.264 (main)
HCHP1_HHI_B.264, HCHP2_HHI_A.264, HCHP3_HHI_A.264 (frext)
2011-11-05 06:58:52 -07:00
Anton Mitrofanov
640d5f1c80 Fix decoding of lossless 4:2:2 H.264
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2011-10-28 23:37:30 -07:00
Anton Mitrofanov
fdb5314ea7 Fix decoding of lossless 10-bit 4:4:4 H.264
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2011-10-28 23:37:30 -07:00