Files
archived-ext-ffmpeg-core/include/libavcodec/avdct.h
Macdu e30b7d7fe2 FFMPEG setup
Contains the following squashed commits from the old branch:

Initial commit

Fix link order

Add option to link against system ffmpeg, disable precompiled binaries for mingw

Update macOS files for XCode 12

Update ffmpeg to 5.1.2

Add mjpeg encoder (#7)

Add mjpeg2jpeg bitstream filter

Add macOS-arm64 builds

Add macOS arm64 to CMakeLists

Add arm64-osx-release to build.yml

dummy commit to trigger workflow

Properly split macOS builds in build.yml

Try to fix actions uploads

Rename the builds

Fix build.yml

Fix typo in build.yml

Amend CMakeLists using the correct check

ci: change upload path to directly upload libraries

ci: build and use universal binary on macOS

ci: set macOS deployment target to macOS 11.0

ci: build FFMPEG prebuilt for each OS/architecture

Add linux arm64 prebuilt.
Add both x86_64 and arm64 prebuilts for macOS.

ci: create release for pre-built FFMPEG

cmake: download and use only necessary prebuilt FFMPEG

Add arm64 windows prebuilt

Co-authored-by: Seungyun Lee <khora.lee.0@gmail.com>
Co-authored-by: shinra-electric <50119606+shinra-electric@users.noreply.github.com>
Co-authored-by: SaturnSky <ikadro@gmail.com>
2024-03-12 21:44:17 +01:00

89 lines
2.7 KiB
C
Executable File

/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_AVDCT_H
#define AVCODEC_AVDCT_H
#include "libavutil/opt.h"
/**
* AVDCT context.
* @note function pointers can be NULL if the specific features have been
* disabled at build time.
*/
typedef struct AVDCT {
const AVClass *av_class;
void (*idct)(int16_t *block /* align 16 */);
/**
* IDCT input permutation.
* Several optimized IDCTs need a permutated input (relative to the
* normal order of the reference IDCT).
* This permutation must be performed before the idct_put/add.
* Note, normally this can be merged with the zigzag/alternate scan<br>
* An example to avoid confusion:
* - (->decode coeffs -> zigzag reorder -> dequant -> reference IDCT -> ...)
* - (x -> reference DCT -> reference IDCT -> x)
* - (x -> reference DCT -> simple_mmx_perm = idct_permutation
* -> simple_idct_mmx -> x)
* - (-> decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant
* -> simple_idct_mmx -> ...)
*/
uint8_t idct_permutation[64];
void (*fdct)(int16_t *block /* align 16 */);
/**
* DCT algorithm.
* must use AVOptions to set this field.
*/
int dct_algo;
/**
* IDCT algorithm.
* must use AVOptions to set this field.
*/
int idct_algo;
void (*get_pixels)(int16_t *block /* align 16 */,
const uint8_t *pixels /* align 8 */,
ptrdiff_t line_size);
int bits_per_sample;
void (*get_pixels_unaligned)(int16_t *block /* align 16 */,
const uint8_t *pixels,
ptrdiff_t line_size);
} AVDCT;
/**
* Allocates a AVDCT context.
* This needs to be initialized with avcodec_dct_init() after optionally
* configuring it with AVOptions.
*
* To free it use av_free()
*/
AVDCT *avcodec_dct_alloc(void);
int avcodec_dct_init(AVDCT *);
const AVClass *avcodec_dct_get_class(void);
#endif /* AVCODEC_AVDCT_H */