Initialize Transform structs t and orig to zero.
Signed-off-by: Ray Simard <rhs.ffmpeg@sylvan-glade.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
This fixes a segmentation fault when doing a transcoding and a stream
copy of the same input stream at the same time, e.g.:
ffmpeg -i in.mkv -c:v mpeg2video transcode.m2v -c copy copy.ts
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
With the added benefit that allowing -segment_list_size 0 makes it
possible to keep all segment entries in the list file.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master: (21 commits)
utils: Check for extradata size overflows.
ARM: rv34: fix asm syntax in dc transform functions
avio: Fix the value of the deprecated URL_FLAG_NONBLOCK
rv34: fix and optimise frame dependency checking
rv34: NEON optimised dc only inverse transform
avprobe: use avio_size() instead of deprecated AVFormatContext.file_size.
ffmenc: remove references to deprecated AVFormatContext.timestamp.
lavf: undeprecate read_seek().
avserver: remove code using deprecated CODEC_CAP_PARSE_ONLY.
lavc: replace some remaining FF_I_TYPE with AV_PICTURE_TYPE_I
lavc: ifdef out parse_only AVOption
nellymoserdec: SAMPLE_FMT -> AV_SAMPLE_FMT
mpegvideo_enc: ifdef out/replace references to deprecated codec flags.
riff: remove references to sonic codec ids
indeo4: add some missing static and const qualifiers
rv34: DC-only inverse transform
avconv: use AVFrame.width/height/format instead of corresponding AVCodecContext fields
lavfi: move version macros to a new installed header version.h
vsrc_buffer: release the buffer on uninit.
rgb2rgb: rgb12tobgr12()
...
Conflicts:
avconv.c
doc/APIchanges
ffprobe.c
libavfilter/Makefile
libavfilter/avfilter.h
libswscale/rgb2rgb.c
libswscale/rgb2rgb.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This isn't used in practice anywhere within libav at the moment,
but change it for consistency until it is removed.
URL_RDONLY/WRONLY were fixed in commit 5b81e29593 (after the
values that actually were used were changed at the major bump,
in commit cbea3ac8), but this flag was unintentionally left unfixed.
Signed-off-by: Martin Storsjö <martin@martin.st>
Using the double variant causes several pointless conversions between
double and int.
Worse, one of the conversions is in an inner loop together with a
function using MMX, resulting in undefined behaviour.
Based on debugging by Ray Simard.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Tested-by: Ray Simard <rhs.ffmpeg@sylvan-glade.com>
The sporadic threading errors during fate-rv30 were caused by calling
ff_thread_await_progress with mb row -1 as argument. That returns
immediately since progress is initialized to -1. Not yet computed
motion vectors from the reference could be used for the first
macroblocks.
This fixes dithering for rgb555le, it appears gcc had moved the
setup of the variables after the asm or something like that.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
av_destruct_packet() always frees the packet data even when the demuxer
is going to re-use it, thus causing crashes when decoding audio
frames (as implemented in a pending patch).
av_free_packet() is used instead, as it allows each demuxer to set the
right packet data releasing mechanism through the pkt->destruct callback.
When decoding coefficients, detect whether the block is DC-only, and take
advantage of this knowledge to perform DC-only inverse transform.
This is achieved by:
- first, changing the 108x4 element modulo_three_table into a 108 element
table (kind of base4), and accessing each value using mask and shifts.
- then, checking low bits for 0 (as they represent the presence of higher
frequency coefficients)
Also provide x86 SIMD code for the DC-only inverse transform.
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
