h264: Integrate draw_horiz_band into ff_h264_draw_horiz_band
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.
Stefano Sabatini [Fri, 25 May 2012 23:38:03 +0000 (01:38 +0200)]
lavc: Prettify printing of codec tags containing non alphanumeric characters
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.
Ronald S. Bultje [Mon, 18 Feb 2013 16:15:52 +0000 (08:15 -0800)]
lavc: Split out ff_hwaccel_pixfmt_list_420[] over individual codecs
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.
Luca Barbato [Tue, 5 Mar 2013 16:12:35 +0000 (17:12 +0100)]
shorten: use the unsigned type where needed
get_uint returns an unsigned value, use an unsigned to store
blocksize to make sure the comparison logic is correct and report
correctly the error for the channel count not supported.
Martin Storsjö [Sat, 2 Mar 2013 11:54:50 +0000 (13:54 +0200)]
rtpdec: Initialize some variables to silence compiler warnings
The warnings are false positives, older gcc versions (such as 4.5)
think the variables can be used uninitialized while they in
practice can't, while newer (4.6) gets it right.
Martin Storsjö [Fri, 1 Mar 2013 14:45:24 +0000 (16:45 +0200)]
flvdec: Check the return value of a malloc
The callers of this function can't report errors sanely. If this
one malloc fails, don't write the extradata byte, make sure we
try to malloc it the next time we're called instead, and make sure
we still consume the input data byte.
CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
Martin Storsjö [Fri, 1 Mar 2013 14:30:44 +0000 (16:30 +0200)]
flvdec: Don't read the VP6 header byte when setting codec type based on metadata
This header byte is only present when actually reading a VP6 frame,
not when reading the codec type field in the metadata. This
potential bug has been present since 5b54a90c.
CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
Martin Storsjö [Wed, 27 Feb 2013 21:22:39 +0000 (23:22 +0200)]
avconv: Apply codec options to streams that are copied as well
This allows setting/overriding e.g. the bitrate parameter, which
is required for the smoothstreaming muxer. Normally, the bitrate
is set by the demuxer in these cases, but not all demuxers can
provide it. This allows stream copy of data to the smoothstreaming
muxer from such inputs.
Martin Storsjö [Wed, 27 Feb 2013 09:13:47 +0000 (11:13 +0200)]
lavf: Handle the environment variable no_proxy more properly
The handling of the environment variable no_proxy, present since
one of the initial commits (de6d9b6404), is inconsistent with
how many other applications and libraries interpret this
variable. Its bare presence does not indicate that the use of
proxies should be skipped, but it is some sort of pattern for
hosts that does not need using a proxy (e.g. for a local network).
As investigated by Rudolf Polzer, different libraries handle this
in different ways, some supporting IP address masks, some supporting
arbitrary globbing using *, some just checking that the pattern matches
the end of the hostname without regard for whether it actually is
the right domain or a domain that ends in the same string.
This simple logic should be pretty similar to the logic used by
lynx and curl.
Diego Biurrun [Tue, 26 Feb 2013 18:26:03 +0000 (19:26 +0100)]
x86: dsputil: Drop aliasing of ff_put_pixels8_mmx to ff_put_pixels8_mmxext
The external assembly function uses mmxext instructions and should not be
masqueraded as an mmx-only function. Instead, use the mmx-only inline
assembly function.
Diego Biurrun [Sat, 9 Feb 2013 15:19:27 +0000 (16:19 +0100)]
Remove pointless av_cold attributes in header files
The init functions marked as av_cold have to be executed in any case,
so there is no gain from trying to mark paths leading to such functions
as unlikely.
Ronald S. Bultje [Mon, 18 Feb 2013 01:01:26 +0000 (17:01 -0800)]
h264/svq3: Stop using draw_edges
Instead, only extend edges on-demand when the motion vector actually
crosses the visible decoded area using ff_emulated_edge_mc(). This
changes decoding time for cathedral from 8.722sec to 8.706sec, i.e.
0.2% faster overall. More generally (VP8 uses this also), low-motion
content gets significant speed improvements, whereas high-motion content
tends to decode in approximately the same time.
Ronald S. Bultje [Sun, 17 Feb 2013 22:52:24 +0000 (14:52 -0800)]
h264: Don't store intra pcm samples in h->mb
Instead, keep them in the bitstream buffer until we read them verbatim,
this saves a memcpy() and a subsequent clearing of the target buffer.
decode_cabac+decode_mb for a sample file (CAPM3_Sony_D.jsv) goes from
6121.4 to 6095.5 cycles, i.e. 26 cycles faster.
projects / ffmpeg / log