This prevents various values from becoming stuck at NAN and
output to become silent
If someone knows a cleaner solution, thats welcome!
Fixes Ticket2335
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Returning 0 may result in an infinite loop in valid calling programs. A
decoder should never return 0 without producing any output.
CC:libav-stable@libav.org
When there is just 1 byte remanining in the buffer, nothing will be read
and the loop will continue forever. Check that there are at least 8
bytes, which are always read at the beginning.
CC:libav-stable@libav.org
The loop a few lines below the xan_unpack() call accesses up to
dec_size * 2 bytes into y_buffer, so dec_size must be limited to
buffer_size / 2.
CC:libav-stable@libav.org
This is the most that can be represented with the current channel layout
system. This limit should be raised/removed when a better system is
implemented.
This misfeature is most likely completely useless and conflicts with
removing the mpegvideo-specific fields from AVFrame. In the improbable
case it is actually useful, it should be reimplemented in a better way.
When parsing the Xing/Info tag, don't set the bit rate if it's an Info tag.
When parsing the stream, don't override the bit rate if it's already set,
otherwise calculate the mean bit rate from parsed frames. This way, the bit
rate will be set correctly both for CBR and VBR streams.
CC:libav-stable@libav.org
Signed-off-by: Anton Khirnov <anton@khirnov.net>
The IIR filter numerically diverges in such cases, this could easily be
fixed but would make the filter slower on some platforms
Fixes Ticket2246
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit '70762508ec5919474edb92a5b1f266fd06640f9c':
lavc: Prettify printing of codec tags containing non alphanumeric characters
h264: Rename the jpeg_420 pixfmt list to match the common naming structure
Conflicts:
libavcodec/h264.c
libavcodec/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This makes the decoder independent of mpegvideo.
This copy of the draw_horiz_band code is simplified compared to
the "generic" mpegvideo one which still has a number of special
cases for different codecs.
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>
This patch changes existing mathematical functions with faster
ones. Speeds up encoding more than 10%. Tested on x86 and
MIPS platforms.
Signed-off-by: Bojan Zivkovic <bojan@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit '5da51284937649a8ebb84fa951c235438fcbf8ae':
cavs: Add a dependency on h264chroma
lavc: Split out ff_hwaccel_pixfmt_list_420[] over individual codecs
Conflicts:
libavcodec/h263dec.c
libavcodec/h264.c
libavcodec/mpeg12.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '5a4e9fe855282a99586050a507d0a486ad39df5b':
avcodec/internal: Fix #if DECODE_AUDIO / ENCODE_AUDIO name mismatch
shorten: use the unsigned type where needed
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'c10da30d8426a1f681d99a780b6e311f7fb4e5c5':
shorten: set invalid channels count to 0
vorbisdec: check memory allocations
h264: check for luma and chroma bit dept being equal
Conflicts:
libavcodec/shorten.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Not all hwaccels implement all codecs, so using one single list for
multiple such codecs means some codecs will be represented in the list,
even though they don't actually handle that codec. Copying specific
lists in each codec fixes that.
Signed-off-by: Martin Storsjö <martin@martin.st>
