From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- .../ffmpeg/ffmpeg60/include/libavcodec/avdct.h | 85 ++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 dom/media/platforms/ffmpeg/ffmpeg60/include/libavcodec/avdct.h (limited to 'dom/media/platforms/ffmpeg/ffmpeg60/include/libavcodec/avdct.h') diff --git a/dom/media/platforms/ffmpeg/ffmpeg60/include/libavcodec/avdct.h b/dom/media/platforms/ffmpeg/ffmpeg60/include/libavcodec/avdct.h new file mode 100644 index 0000000000..9edf4c187e --- /dev/null +++ b/dom/media/platforms/ffmpeg/ffmpeg60/include/libavcodec/avdct.h @@ -0,0 +1,85 @@ +/* + * 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
+ * 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 */ -- cgit v1.2.3