This allows backward seeking on top of some non seekable streams.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

Fixes part of ticket #560.

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

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

This way user apps can choose to skip such content.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  prores: get correct size for coded V plane if alpha is present
  prores: do not set pixel format on codec init
  pthread: prevent updating AVCodecContext from itself in frame_thread_free
  pthread: copy coded frame dimensions in update_context_from_thread
  vp8: prevent read from uninitialized memory in decode_mvs
  vp8: force reallocation in update_thread_context after frame size change
  vp8: fix return value if update_dimensions fails
  matroskadec: fix out of bounds write
  adpcmdec: calculate actual number of output samples for each decoder.
  adpcmdec: check remaining buffer size before decoding next block in the ADPCM IMA WAV decoder.
  adpcmdec: do not terminate early in ADPCM IMA Duck DK3 decoder.
  adpcmdec: remove unneeded buf_size==0 check.
  adpcmdec: remove unneeded zeroing of *data_size
  dnxhdenc: fixed signed multiplication overflow

Conflicts:
	tests/ref/fate/prores-alpha
	tests/ref/fate/truemotion1-24
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

+10l.

In particular: set output timebase to 1/output_sample_rate, fix output
PTS computation, and do not forget to copy properties values from the
input buffer.

Fix checksum computation when the used plane size is different from the
allocated plane size, as it was wrongly assumed.

Based on a change by JULIAN GARDNER
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

The size check must be updated to take into account both manners
in which v_data_size might be set.
Signed-off-by: Mans Rullgard <mans@mansr.com>

The pixel format is not known until the frame header is parsed.
Guessing it here only causes trouble for the caller if the guess
turns out to be wrong (and actually causes very wrong output by
avconv/avplay).
Signed-off-by: Mans Rullgard <mans@mansr.com>

Fixes Ticket555
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It is useful for logging messages from a writer context.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

* qatar/master:
  proresdsp: fix function prototypes.
  prores-idct: fix overflow in c code.
  fate: update prores-alpha ref after changing pix_fmt to yuv444p10le
  prores: add missing feature warning for alpha
  mov: 10l: Terminate string with 0 not '0'
  mov: Prevent illegal writes when chapter titles are very short.
  prores: add appropriate -fix_fmt parameter to FATE command
  riff: always generate a proper WAVEFORMATEX structure in ff_put_wav_header
  lavc: add a flag-based error_recognition field to AVCodecContext and deprecate non-flag-based ER field
  lavc: rename deprecation symbol FF_API_VERY_AGGRESSIVE to FF_API_ER

Conflicts:
	libavcodec/avcodec.h
	libavformat/mov.c
	tests/fate/prores.mak
	tests/ref/acodec/g726
	tests/ref/fate/prores-alpha
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This also allows for removing some of the buf_size checks and using the
sample count for some of the decoding loops.

ADPCM IMA WAV decoder.

There are still 2 nibbles to decode once the last byte in the packet has been
read. Updated FATE reference.

This is already done by avcodec_decode_audio3()

The low 32 bits of a multiplication are the same for signed
and unsigned operands.  Casting to unsigned before multiplying
is thus equivalent while avoiding signed overflow, which is
undefined by the C99 standard.
Signed-off-by: Mans Rullgard <mans@mansr.com>

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