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18 Commits

Author SHA1 Message Date
Andreas Rheinhardt
0971fcf0a0 avcodec/codec_internal, all: Use macros to set deprecated AVCodec fields 
The aim of this is twofold: a) Clang warns when setting a deprecated
field in a definition and because several of the widely set
AVCodec fields are deprecated, one gets several hundred warnings
from Clang for an ordinary build. Yet fortunately Clang (unlike GCC)
allows to disable deprecation warnings inside a definition, so
that one can create simple macros to set these fields that also suppress
deprecation warnings for Clang. This has already been done in
fdff1b9cbf for AVCodec.channel_layouts.
b) Using macros will allow to easily migrate these fields to internal ones.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-03-10 00:57:23 +01:00
Niklas Haas
703288cec6 avcodec/internal: add FFCodec.color_ranges 
I went through all codecs and put them into five basic categories:

1. JPEG range only
2. MPEG range only
3. Explicitly tagged
4. Broken (codec supports both but encoder ignores tags)
5. N/A (headerless or pseudo-formats)

Filters in category 5 remain untouched. The rest gain an explicit
assignment of their supported color ranges, with codecs in category
4 being set to MPEG-only for safety.

It might be considered redundant to distinguish between 0 (category 5)
and MPEG+JPEG (category 3), but in doing so we effectively communicate
that we can guarantee that these tags will be encoded, which is distinct
from the situation where there are some codecs that simply don't have
tagging or implied semantics (e.g. rawvideo).

A full list of codecs follows:

JPEG range only:
 - amv
 - roqvideo

MPEG range only:
 - asv1, asv2
 - avui
 - cfhd
 - cljr
 - dnxhd
 - dvvideo
 - ffv1
 - flv
 - h261, h263, h263p
 - {h263,vp8}_v4l2m2m
 - huffyuv, ffvhuff
 - jpeg2000
 - libopenjpeg
 - libtheora
 - libwebp, libwebp_anim
 - libx262
 - libxavs, libxavs2
 - libxvid
 - mpeg1video, mpeg2video
 - mpeg2_qsv
 - mpeg2_vaapi
 - mpeg4, msmpeg4, msmpeg4v2, wmv1, wmv2
 - mpeg4_omx
 - prores, prores_aw, prores_ks
 - rv10, rv20
 - snow
 - speedhq
 - svq1
 - tiff
 - utvideo

Explicitly tagged (MPEG/JPEG):
 - {av1,h264,hevc}_nvenc
 - {av1,h264,hevc}_vaapi
 - {av1,h264,hevc,vp8,vp9,mpeg4}_mediacodec
 - {av1,h264,hevc,vp9}_qsv
 - h264_amf
 - {h264,hevc,prores}_videotoolbox
 - libaom-av1
 - libkvazaar
 - libopenh264
 - librav1e
 - libsvtav1
 - libvpx, libvpx-vp9
 - libx264
 - libx265
 - ljpeg
 - mjpeg
 - vc2

Broken (encoder ignores tags):
 - {av1,hevc}_amf
 - {h264,hevc,mpeg4}_v4l2m2m
 - h264_omx
 - libxeve
 - magicyuv
 - {vp8,vp9,mjpeg}_vaapi

N/A:
 - ayuv, yuv4, y41p, v308, v210, v410, v408 (headerless)
 - pgmyuv (headerless)
 - rawvideo, bitpacked (headerless)
 - vnull, wrapped_avframe (pseudocodecs)
 2024-09-08 13:58:11 +02:00
Anton Khirnov
08bebeb1be Revert "all: Don't set AVClass.item_name to its default value" 
Some callers assume that item_name is always set, so this may be
considered an API break.

This reverts commit 0c6203c97a.
 2024-01-20 10:34:48 +01:00
Andreas Rheinhardt
0c6203c97a all: Don't set AVClass.item_name to its default value 
Unnecessary since acf63d5350adeae551d412db699f8ca03f7e76b9;
also avoids relocations.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2023-12-22 15:12:33 +01:00
Marton Balint
6b6f7db819 avcodec: add AVCodecContext.frame_num as 64 bit variant to frame_number 
Frame counters can overflow relatively easily (INT_MAX number of frames is
slightly more than 1 year for 60 fps content), so make sure we use 64 bit
values for them.

Also deprecate the old 32 bit frame_number attribute.

Signed-off-by: Marton Balint <cus@passwd.hu>
 2023-02-13 00:36:46 +01:00
Anton Khirnov
8d73f3ce56 lavc: support AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE in all no-delay encoders 
Including fake-delay encoders marked with FF_CODEC_CAP_EOF_FLUSH.
 2023-01-29 09:22:57 +01:00
Andreas Rheinhardt
48286d4d98 avcodec/codec_internal: Add macro to set AVCodec.long_name 
It reduces typing: Before this patch, there were 105 codecs
whose long_name-definition exceeded the 80 char line length
limit. Now there are only nine of them.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-09-03 15:42:57 +02:00
Andreas Rheinhardt
5828e8209f avcodec: Constify frame->data pointers for encoders where possible 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-08-05 03:21:41 +02:00
Andreas Rheinhardt
4243da4ff4 avcodec/codec_internal: Use union for FFCodec decode/encode callbacks 
This is possible, because every given FFCodec has to implement
exactly one of these. Doing so decreases sizeof(FFCodec) and
therefore decreases the size of the binary.
Notice that in case of position-independent code the decrease
is in .data.rel.ro, so that this translates to decreased
memory consumption.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-04-05 20:02:37 +02:00
Andreas Rheinhardt
20f9727018 avcodec/codec_internal: Add FFCodec, hide internal part of AVCodec 
Up until now, codec.h contains both public and private parts
of AVCodec. This exposes the internals of AVCodec to users
and leads them into the temptation of actually using them
and forces us to forward-declare structures and types that
users can't use at all.

This commit changes this by adding a new structure FFCodec to
codec_internal.h that extends AVCodec, i.e. contains the public
AVCodec as first member; the private fields of AVCodec are moved
to this structure, leaving codec.h clean.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-03-21 01:33:09 +01:00
Andreas Rheinhardt
27f22f3383 all: Remove unnecessary libavcodec/internal.h inclusions 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-08 06:16:26 +01:00
Andreas Rheinhardt
ed6549887a avcodec/encoders: Remove redundant setting of AV_PKT_FLAG_KEY 
It is now set generically for all those encoders whose corresponding
AVCodecDescriptor has the AV_CODEC_PROP_INTRA_ONLY.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-09-28 01:57:10 +02:00
Andreas Rheinhardt
5b8c18495c avcodec/cljrenc: Don't use too big buffers, don't copy them, set CAP_DR1 
Up until now, the cljr encoder used buffers that were too big by a
factor of eight (probably bit/byte confusion). This has been fixed.
And because the needed buffer size can be easily calculated in advance,
one can avoid the implicit use of an intermediate buffer and can even
allow user-supplied buffers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-05-05 12:35:55 +02:00
Andreas Rheinhardt
a247ac640d avcodec: Constify AVCodecs 
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
 2021-04-27 10:43:15 -03:00
Andreas Rheinhardt
c81b8e04aa Avoid intermediate bitcount for number of bytes in PutBitContext 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2021-03-30 12:36:32 +02:00
Michael Niedermayer
e36db49b7b avcodec: Add a min size parameter to ff_alloc_packet2() 
This parameter can be used to inform the allocation code about how much
downsizing might occur, and can be used to optimize how to allocate the
packet

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-07-27 19:57:52 +02:00
Michael Niedermayer
225c5cc815 Merge commit '373a6dda5422186bc057297342a9e559a564595e' 
* commit '373a6dda5422186bc057297342a9e559a564595e':
  cljr: split decoder and encoder

Conflicts:
	libavcodec/Makefile
	libavcodec/cljrdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-06 20:00:59 +02:00
Nidhi Makhijani
373a6dda54 cljr: split decoder and encoder 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2014-07-06 09:28:20 -07:00