If there is an error during frame parsing, but AVCodecContext.channels was
changed and AC3DecodeContext.out_channels was set previously, the two may not
match.
Fixes CVE-2012-2802
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
qt-faststart is terribly slow when the input file and the output file
are on a slow disk like a SD card. By increasing the copy_buffer from
1K to 32M I decreased the processing time on a sample file from
1600 seconds to 4 seconds. The timing difference is during 'copying
rest of file'.
S:\SD_VIDEO\PRG001>e:\utils\qt-faststart 00005.mp4 5.mp4
ftyp 0 32
free 32 8
mdat 40 13744391
moov 13744431 141848
patching stco atom...
patching stco atom...
writing ftyp atom...
writing moov atom...
copying rest of file...
Execution time: 1576.259 s
S:\SD_VIDEO\PRG001>s:\utils\qt-faststart 00005.mp4 5.mp4
ftyp 0 32
free 32 8
mdat 40 13744391
moov 13744431 141848
patching stco atom...
patching stco atom...
writing ftyp atom...
writing moov atom...
copying rest of file...
Execution time: 3.846 s
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
In CBC mode, when src=dst and we are decrypting a block different
from the first one, we need to save the current block of ciphertext
(which will constitute the initialization vector for the next block)
before we overwrite it.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
h264: avoid stuck buffer pointer in decode_nal_units
mpeg12: fix the semantics of the int* parameter of decode()
Conflicts:
libavcodec/mpeg12.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'd9a2e87b1ce44cce23801e7ec6810f8bf994fa23':
mpeg12: move mpeg_decode_frame() lower
avsdec: Set dimensions instead of relying on the demuxer.
wmalosslessdec: Reset put bit buffer when num_saved_bits is reset.
Conflicts:
libavcodec/avs.c
libavcodec/mpeg12.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'd05f72c75445969cd7bdb1d860635c9880c67fb6':
dfa: improve boundary checks in decode_dds1()
wmalosslessdec: Fix reading too many bits in decode_channel_residues()
wmalosslessdec: fix a get_bits(0) in decode_ac_filter
wmalosslessdec: make MCLMS arrays big enough for what is written into them.
indeo4/5: check empty tile size in decode_mb_info().
ivi_common: make ff_ivi_process_empty_tile() static.
indeo5: check tile size in decode_mb_info().
indeo3: fix out of cell write.
Conflicts:
libavcodec/dfa.c
libavcodec/indeo3.c
libavcodec/indeo5.c
libavcodec/ivi_common.c
libavcodec/wmalosslessdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This generalizes the previous work on disposition printing.
Disposition flags are shown in a dedicated section, which should improve
output intellegibility, extensibility and filtering operations.
This breaks output syntax with the recently introduced disposition
printing.
Do not make use of ad-hoc "tags" code, introduce a new section flag
SECTION_FLAG_HAS_VARIABLE_FIELDS to deal with the tags in a
content-agnostic way.
This is required by the pending disposition change.
It is similar to av_set_options_string() but accepts a list
of options that can be in shorthand: if the key is omitted
on the first fields, the keys from the shorthand list are
assumed, in order.
When decode_nal_units() previously encountered a NAL_END_SEQUENCE,
and there are some junk bytes left in the input buffer, but no start codes,
buf_index gets stuck 3 bytes before the end of the buffer.
This can trigger an infinite loop in the caller code, eg. in
try_decode_trame(), as avcodec_decode_video() then keeps returning zeroes,
with 3 bytes of the input packet still available.
With this change, the remaining bytes are skipped so the whole packet gets
consumed.
CC:libav-stable@libav.org
Signed-off-by: Jindřich Makovička <makovick@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
