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2f8f54b5a6
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sunyuechi 2f8f54b5a6 lavc/vp8dsp: R-V V put_bilin_h v unroll 
Since len < 64, the registers are sufficient, so it can be
directly unrolled (a4 is even).

Another benefit of unrolling is that it reduces one load operation
vertically compared to horizontally.

                                 old                 new
                             C908   X60          C908   X60
vp8_put_bilin4_h_c         :    6.2    5.5     :    6.2    5.5
vp8_put_bilin4_h_rvv_i32   :    2.2    2.0     :    1.5    1.5
vp8_put_bilin4_v_c         :    6.5    5.7     :    6.2    5.7
vp8_put_bilin4_v_rvv_i32   :    2.2    2.0     :    1.2    1.5
vp8_put_bilin8_h_c         :   24.2   21.5     :   24.2   21.5
vp8_put_bilin8_h_rvv_i32   :    5.2    4.7     :    3.5    3.5
vp8_put_bilin8_v_c         :   24.5   21.7     :   24.5   21.7
vp8_put_bilin8_v_rvv_i32   :    5.2    4.7     :    3.5    3.2
vp8_put_bilin16_h_c        :   48.0   42.7     :   48.0   42.7
vp8_put_bilin16_h_rvv_i32  :    5.7    5.0     :    5.2    4.5
vp8_put_bilin16_v_c        :   48.2   43.0     :   48.2   42.7
vp8_put_bilin16_v_rvv_i32  :    5.7    5.2     :    4.5    4.2

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2024-06-13 17:10:03 +02:00
compat avutil/common: Don't auto-include mem.h 2024-04-01 19:51:37 +02:00
doc lavc: bump minor and add APIchanges entry for new USAC profile 2024-06-09 00:01:50 +02:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 18:22:55 +02:00
fftools fftools/ffmpeg_mux_init: Fix leak when using non-encoding option 2024-06-11 16:59:44 +02:00
libavcodec lavc/vp8dsp: R-V V put_bilin_h v unroll 2024-06-13 17:10:03 +02:00
libavdevice avdevice/xcbgrab: Check sscanf() return 2024-06-12 09:14:15 +02:00
libavfilter avfilter/avfiltergraph: improve sample-rate picking 2024-06-13 11:01:00 +02:00
libavformat avformat/riff: Declare VCR2 to be MPEG-2 2024-06-12 15:48:48 +02:00
libavutil lavu/hwcontext_vulkan: Support write on drm frame 2024-06-12 09:14:15 +02:00
libswresample avutil/common: Don't auto-include mem.h 2024-04-01 19:51:37 +02:00
libswscale riscv: probe for Zbb extension at load time 2024-06-11 21:52:15 +02:00
presets
tests api/api-band-test: Query codec capabilities to decide admissibility 2024-06-12 15:48:49 +02:00
tools tools/decode_simple: Check avcodec_send_packet() for errors on flushing 2024-05-28 16:28:07 +02:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-12 18:18:32 +01:00
.gitignore
.mailmap .mailmap: Update my mailmap entry 2024-02-24 15:27:54 +01:00
Changelog libavcodec/alpha: remove DSP & support code 2024-06-12 00:09:09 +02:00
configure libavcodec/alpha: remove DSP & support code 2024-06-12 00:09:09 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md Update Librempeg LICENSE 2024-02-24 13:31:56 +01:00
Makefile riscv: add Zvbb vector bit manipulation extension 2024-05-11 18:22:55 +02:00
README.md
RELEASE RELEASE: update after 7.0 branch 2024-04-03 17:29:51 +02:00

README.md

Librempeg README

Librempeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

Examples

Coding examples are available in the doc/examples directory.

License

Librempeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Contributing can be done via Github pull requests.