Fixes build without threads after
759001c534.

This should ensure that a valid channel layout is always set on a frame,
until a better solution is implemented.

This will allow us to avoid copying the packets in many cases.

This breaks ABI.

Make sure the behavior does not change with the locale.

Signed-off-by: Martin Storsjö <martin@martin.st>

Make av_get_codec_tag_string() show codec tag string characters in a more
intelligible ways. For example the ascii char "@" is used as a number, so
should be displayed like "[64]" rather than as a printable character.

Apart alphanumeric chars, only the characters ' ' and '.' are used
literally in codec tags, all the other characters represent numbers.

This also avoids relying on locale-dependent character class functions.

Signed-off-by: Martin Storsjö <martin@martin.st>

There may be more decoders that rely on this. Those should be found and
fixed.

rc_buffer_size is not set before.

Solve the initial the rate control underflow issue reported in
bug 222.

CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/utils.c:1050:5: warning: missing braces around initializer [-Wmissing-braces]
libavcodec/utils.c:1314:5: warning: missing braces around initializer [-Wmissing-braces]

Direct rendering capable decoders call get_buffer() which will set the
frame parameters.

Prevents frames with wrong parameters when a decoder outputs delayed
frames after a resolution or pixel format change.

Any performance gain from this is negligible and not worth the extra
code.

There is no point in duplicating this code in every get_buffer()
implementation.

It will be useful in the upcoming transition to refcounted AVFrames.

It is used only in one place and is unlikely it would be needed
elsewhere.

Deprecate avcodec_get_chroma_sub_sample.

Also reorder some other #include when applicable.

Same fix and issue as in a25d912dca

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Ensures the decoder did not set channel count to an insanely high value
during initialization, which could cause large memory usage when it tries to
get a buffer during decoding.

Avoids memleaks with audio when extended_data is nontrivial and the user
doesn't reset the frame.
Shouldn't have any effect for video for now, but might be useful in the
future.

Error out on init if a codec with CODEC_CAP_EXPERIMENTAL is requested
and strict_std_compliance is not FF_COMPLIANCE_EXPERIMENTAL.

Move the check from avconv to avcodec_open2() and return
AVERROR_EXPERIMENTAL accordingly.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Since 2bc0de385, AVFrame needs to be initialized
before calling avcodec_get_frame_defaults().

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Functions used across libraries should have avpriv_ and not ff_ prefixes.

Fixes CID732173.

Some invocations include a verb in the log message, others do not.  Yet
av_log_missing_feature expects callers to provide a verb.  Change the
function to include a verb instead and update the callers accordingly.
The result is a more natural function API and correct English in the
function invocations.

When there is only 1 channel, the planar and interleaved formats of the same
data type should be treated as identical.

Some decoders (e.g. nellymoser) only set channel_layout and do not set
channel count.

Since an AVFrame now has malloced members (extended_data), it must have
a destructor.

Otherwise the frame is uninitialized, so avcodec_get_frame_defaults()
cannot determine whether to free extended_data.

AVFrame is used for both audio and video, so calling the argument 'pic'
is misleading.

Ensure that padded_frame is freed before returning when needed.

AVCodecContext.encode is currently used only for subtitles, encode2 is
used for audio and video.

Silences a warning about discarding const.

The library is 3-clause BSD licensed.

Signed-off-by: Martin Storsjö <martin@martin.st>

libavcodec/utils.c:251: note: expected ‘const uint8_t *’ but argument is of type ‘const short int *’