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Diffstat (limited to 'libavcodec/opusenc.h')
-rw-r--r-- | libavcodec/opusenc.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libavcodec/opusenc.h b/libavcodec/opusenc.h new file mode 100644 index 0000000..b9162eb --- /dev/null +++ b/libavcodec/opusenc.h @@ -0,0 +1,54 @@ +/* + * Opus encoder + * Copyright (c) 2017 Rostislav Pehlivanov <atomnuker@gmail.com> + * + * 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_OPUSENC_H +#define AVCODEC_OPUSENC_H + +#include "internal.h" +#include "opus_celt.h" + +/* Determines the maximum delay the psychoacoustic system will use for lookahead */ +#define FF_BUFQUEUE_SIZE 145 +#include "libavfilter/bufferqueue.h" + +#define OPUS_MAX_LOOKAHEAD ((FF_BUFQUEUE_SIZE - 1)*2.5f) + +#define OPUS_MAX_CHANNELS 2 + +/* 120 ms / 2.5 ms = 48 frames (extremely improbable, but the encoder'll work) */ +#define OPUS_MAX_FRAMES_PER_PACKET 48 + +#define OPUS_BLOCK_SIZE(x) (2 * 15 * (1 << ((x) + 2))) + +#define OPUS_SAMPLES_TO_BLOCK_SIZE(x) (ff_log2((x) / (2 * 15)) - 2) + +typedef struct OpusEncOptions { + float max_delay_ms; +} OpusEncOptions; + +typedef struct OpusPacketInfo { + enum OpusMode mode; + enum OpusBandwidth bandwidth; + int framesize; + int frames; +} OpusPacketInfo; + +#endif /* AVCODEC_OPUSENC_H */ |