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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavcodec/mpegaudio.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavcodec/mpegaudio.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/mpegaudio.h b/media/ffvpx/libavcodec/mpegaudio.h new file mode 100644 index 0000000000..74590a8e8b --- /dev/null +++ b/media/ffvpx/libavcodec/mpegaudio.h @@ -0,0 +1,81 @@ +/* + * copyright (c) 2001 Fabrice Bellard + * + * 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 + */ + +/** + * @file + * mpeg audio declarations for both encoder and decoder. + */ + +#ifndef AVCODEC_MPEGAUDIO_H +#define AVCODEC_MPEGAUDIO_H + +#ifndef USE_FLOATS +# define USE_FLOATS 0 +#endif + +#include <stdint.h> +#include "libavutil/internal.h" + +/* max frame size, in samples */ +#define MPA_FRAME_SIZE 1152 + +/* max compressed frame size */ +#define MPA_MAX_CODED_FRAME_SIZE 1792 + +#define MPA_MAX_CHANNELS 2 + +#define SBLIMIT 32 /* number of subbands */ + +#define MPA_STEREO 0 +#define MPA_JSTEREO 1 +#define MPA_DUAL 2 +#define MPA_MONO 3 + +#ifndef FRAC_BITS +#define FRAC_BITS 23 /* fractional bits for sb_samples and dct */ +#define WFRAC_BITS 16 /* fractional bits for window */ +#endif + +#define IMDCT_SCALAR 1.759 + +#define FRAC_ONE (1 << FRAC_BITS) + +#define FIX(a) ((int)((a) * FRAC_ONE)) + +#if USE_FLOATS +# define INTFLOAT float +# define SUINTFLOAT float +typedef float MPA_INT; +typedef float OUT_INT; +#elif FRAC_BITS <= 15 +# define INTFLOAT int +# define SUINTFLOAT SUINT +typedef int16_t MPA_INT; +typedef int16_t OUT_INT; +#else +# define INTFLOAT int +# define SUINTFLOAT SUINT +typedef int32_t MPA_INT; +typedef int16_t OUT_INT; +#endif + +int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf); + +#endif /* AVCODEC_MPEGAUDIO_H */ |