This will allow the caller to enumerate child contexts in a generic way
and since the API is recursive, it also allows for deeper nesting (e.g.
AVFormatContext->AVIOContext->URLContext)
This will also allow the new setting/reading API to transparently apply
to children contexts.
This code relies on the result wrapping as for unsigned
values, and the sign is not used. Thus an unsigned type
is proper here.
Signed-off-by: Mans Rullgard <mans@mansr.com>
* qatar/master: (23 commits)
fix AC3ENC_OPT_MODE_ON/OFF
h264: fix HRD parameters parsing
prores: implement multithreading.
prores: idct sse2/sse4 optimizations.
swscale: use aligned move for storage into temporary buffer.
prores: extract idct into its own dspcontext and merge with put_pixels.
h264: fix invalid shifts in init_cavlc_level_tab()
intfloat_readwrite: fix signed addition overflows
mov: do not misreport empty stts
mov: cosmetics, fix for and if spacing
id3v2: fix NULL pointer dereference
mov: read album_artist atom
mov: fix disc/track numbers and totals
doc: fix references to obsolete presets directories for avconv/ffmpeg
flashsv: return more meaningful error value
flashsv: fix typo in av_log() message
smacker: validate channels and sample format.
smacker: check buffer size before reading output size
smacker: validate number of channels
smacker: Separate audio flags from sample rates in smacker demuxer.
...
Conflicts:
cmdutils.h
doc/ffmpeg.texi
libavcodec/Makefile
libavcodec/motion_est_template.c
libavformat/id3v2.c
libavformat/mov.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
The bit_rate_value_minus1 and cpb_size_value_minus1 elements
allow a wider range than get_ue_golomb() supports. This
adds a get_ue_golomb_long() function supporting up to 31
leading zeros, which is the maximum for these syntax
elements, and uses it in decode_hrd_parameters().
Signed-off-by: Mans Rullgard <mans@mansr.com>
The level_code expression includes a shift which is invalid in
those cases where the value is not used. Moving the calculation
to the branch where the result is used avoids these.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The PPS may contain a few trailing elements whose presence is
only signalled by data remaining after the the mandatory part
has been parsed. The current code fails to take into account
the rbsp_trailing_bits() when deciding whether to parse these
optional elements. Assuming no unnecessary padding bytes are
passed to this function, the optional elements are present if
either more than 8 extra bits remain or the remaining bits do
not form a valid rbsp_trailing_bits() after the mandatory PPS
elements have been parsed.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The way this value is used, it should be an unsigned type.
While the numerical value has no meaning, unsigned wraparound
is relied upon.
Signed-off-by: Mans Rullgard <mans@mansr.com>
* qatar/master: (34 commits)
h264: reset h->ref_count in case of errors in ff_h264_decode_ref_pic_list_reordering()
error_resilience: fix the check for missing references in ff_er_frame_end() for H264
4xm: prevent NULL dereference with invalid huffman table
4xmdemux: prevent use of uninitialized memory
4xm: clear FF_INPUT_BUFFER_PADDING_SIZE bytes in temporary buffers
ptx: check for out of bound reads
tiffdec: fix out of bound reads/writes
eacmv: check for out of bound reads
eacmv: fix potential pointer arithmetic overflows
adpcm: fix out of bound reads due to integer overflow
anm: prevent infinite loop
avsdemux: check for out of bound writes
avs: check for out of bound reads
avsdemux: check for corrupted data
AVOptions: refactor set_number/write_number
AVOptions: cosmetics, rename static av_set_number2() to write_number().
AVOptions: cosmetics, move and rename static av_set_number().
AVOptions: split av_set_string3 into opt type-specific functions
avidec: fix signed overflow in avi_sync()
mxfdec: Fix some buffer overreads caused by the misuse of AVPacket related functions.
...
Conflicts:
Changelog
configure
libavcodec/ptx.c
libavcodec/ra144.c
libavcodec/vaapi_vc1.c
libavcodec/vc1.c
libavcodec/version.h
libavformat/4xm.c
libavformat/avidec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
mpeg4dec: use unsigned type for startcode in ff_mpeg4_decode_picture_header
mpeg124: use sign_extend() function
ac3dec: use get_sbits() instead of manually sign-extending
4xm: fix signed overflow
wmavoice: fix a signed overflow
mpegvideo_enc: fix a signed overflow
crc: fix signed overflow
fate: run avconv with -nostats flag
avtools: add -v as alias for -loglevel
avconv: always print stats with AV_LOG_INFO
doc/avconv: add forgotten output/per-stream info to -filter
avconv: add -stats option to enable/disable printing encoding progress
avconv: in output_packet() don't set decoded_data_size for video.
avconv: remove pointless always true condition
avconv: factorize common code in transcode_init()
zmbv: remove memcpy() of decoded frame
mpeg12enc: use sign_extend() function
h264pred: use unsigned types for pixel values, fix signed overflows
h264: fix signed overflows in x*0x01010101 expressions
h264pred: remove unused variables
Conflicts:
avconv.c
tests/fate-run.sh
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
lavf: fix signed overflow in avformat_find_stream_info()
vp8: fix signed overflows
motion_est: fix some signed overflows
dca: fix signed overflow in shift
aacdec: fix undefined shifts
bink: Check for various out of bound writes
bink: Check for out of bound writes when building tree
put_bits: fix invalid shift by 32 in flush_put_bits()
Conflicts:
libavcodec/bink.c
libavformat/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
In addition to avoiding undefined behaviour, an unsigned type
makes more sense for packing multiple 8-bit values.
Signed-off-by: Mans Rullgard <mans@mansr.com>
If flush_put_bits() is called when the 32-bit buffer is empty,
e.g. after writing a multiple of 32 bits, and invalid shift by
32 is performed. Since flush_put_bits() is called infrequently,
this additional check should have negligible performance impact.
Signed-off-by: Mans Rullgard <mans@mansr.com>
* qatar/master: (24 commits)
mpegps: Use av_get_packet() instead of poorly emulating it.
motionpixels: decode only the 111 complete frames for fate
mpc8: Check out of bound bands limit
xan: Prevent NULL dereference with missing palette
xan: Check for out of bound reads in xan_huffman_decode()
xan: Fixed out of bound accesses in xan_unpack()
motionpixels: Prevent calling init_vlc() with invalid parameters
shorten: Fix out of bound writes in fix_bitshift()
dsicinav: Check for out of bounds writes
tiertexseqv: Check for out of bound reads
quickdraw: Check for out of bound reads
dsicinav: Check for out of bounds reads
motionpixels: Fix the size of workspace buffers
motionpixels: Clear FF_INPUT_BUFFER_PADDING_SIZE bytes at the end of the temporary buffer
wmavoice: Check for corrupted extra data
wmavoice: Check for out of bound writes
xan: Prevent NULL dereferences with missing reference frame
bink: Prevent NULL dereferences with missing reference frame
wavpack: Reset internal state on corrupted blocks
wmapro: Validate the number of audio channels before using it
...
Conflicts:
libavcodec/h264.c
libavcodec/xan.c
tests/ref/fate/motionpixels
Merged-by: Michael Niedermayer <michaelni@gmx.at>
