They allow to implement the if/then/else logic, which cannot be
implemented otherwise.

For example the expression:
A*B + not(A)*C

always evaluates to NaN if B is NaN, even in the case where A is 0.

Change log level from ERROR to WARNING and provide more specific
information in the message itself.

Fixes compilation with NASM.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

* qatar/master:
  rv34: add NEON rv34_idct_add
  rv34: 1-pass inter MB reconstruction
  add SMJPEG muxer
  avformat: split out common SMJPEG code
  pictordec: Use bytestream2 functions
  avconv: use avcodec_encode_audio2()
  pcmenc: use AVCodec.encode2()
  avcodec: bump minor version and add APIChanges for the new audio encoding API
  avcodec: Add avcodec_encode_audio2() as replacement for avcodec_encode_audio()
  avcodec: add a public function, avcodec_fill_audio_frame().
  rv34: Intra 16x16 handling
  rv34: Inter/intra MB code split

Conflicts:
	Changelog
	libavcodec/avcodec.h
	libavcodec/pictordec.c
	libavcodec/utils.c
	libavcodec/version.h
	libavcodec/x86/rv34dsp.asm
	libavformat/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This avoids fate breakage from bumping version.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This allows correct output pix_fmt auto-selection
if the input pix_fmt is yuva420.

Fixes ticket #290.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Overall almost 4% faster, idct_add down from 350 to 85 cycles, idct_dc_add
down from 83 to 30 cycles.

squash: rv34 idct rearrange partial register loads

Implement 1-pass inverse transform and reconstruction for inter blocks.

This reworks the frame skipping code such that the reference
buffers are still updated according to the header.
However it also ensures that the current frame will not end
up in any reference buffer.
Also fixes a hang with frame-multithreading, probably because
get_buffer was already called and would have reset the progress,
however the frame could remain in framep due to the missing update
(or it could be assigned to next_framep and a skip_frame skip would
then write it into framep - there might be even more failure modes).
Sample might become available at samples/nsv/vp8.nsv
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Should fix valgrind FATE.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

This is a preparation for adding SMJPEG muxer.
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Enhances seeking by demuxing until the requested timestamp is reached within
the segment selected by the seek code using the playlist info.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is required by the spec and fixes video-1frag.ogg.48.ogg. (FPE)

Based on the debuging work of Oana Stratulat and ubitux.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

mov: cosmetics - move a line to a better position and add a comment

Oana Andreea Stratulat submitted a similar patch to trac, but forgot
to notify the ML about it.
Signed-off-by: Jean First <jeanfirst@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Jean First <jeanfirst@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This allows audio encoders to optionally take an AVFrame as input and write
encoded output to an AVPacket.

This also adds AVCodec.encode2() which will also be usable by video and
subtitle encoders once support is implemented in the public functions.

This is a convenience function for the user to fill audio AVFrame information.

Signed-off-by: Jean First <jeanfirst@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  fate: split ADPCM and DPCM test references into separate files.
  mov, mxfdec: Employ more meaningful return values.
  lavc: Relax API strictness in avcodec_decode_audio3 with a custom get_buffer()
  wavpack: fix clipping for 32-bit lossy mode
  vb: Use bytestream2 functions

Conflicts:
	libavcodec/utils.c
	libavcodec/vb.c
	libavformat/mxfdec.c
	tests/fate/dpcm.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Extract processing of intra 16x16 blocks from intra macroblock
processing.
Also implement a function performing inverse transform and block
reconstruction for DC-only blocks in 1 pass instead of 2.