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56 lines
1.7 KiB
56 lines
1.7 KiB
/* |
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* Opus encoder |
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* Copyright (c) 2017 Rostislav Pehlivanov <atomnuker@gmail.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_OPUSENC_H |
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#define AVCODEC_OPUSENC_H |
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#include "internal.h" |
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#include "opus_celt.h" |
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/* Determines the maximum delay the psychoacoustic system will use for lookahead */ |
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#define FF_BUFQUEUE_SIZE 145 |
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#include "libavfilter/bufferqueue.h" |
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#define OPUS_MAX_LOOKAHEAD ((FF_BUFQUEUE_SIZE - 1)*2.5f) |
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#define OPUS_MAX_CHANNELS 2 |
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/* 120 ms / 2.5 ms = 48 frames (extremely improbable, but the encoder'll work) */ |
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#define OPUS_MAX_FRAMES_PER_PACKET 48 |
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#define OPUS_BLOCK_SIZE(x) (2 * 15 * (1 << ((x) + 2))) |
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#define OPUS_SAMPLES_TO_BLOCK_SIZE(x) (ff_log2((x) / (2 * 15)) - 2) |
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typedef struct OpusEncOptions { |
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float max_delay_ms; |
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} OpusEncOptions; |
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typedef struct OpusPacketInfo { |
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enum OpusMode mode; |
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enum OpusBandwidth bandwidth; |
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int framesize; |
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int frames; |
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} OpusPacketInfo; |
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void ff_celt_enc_bitalloc(OpusRangeCoder *rc, CeltFrame *f); |
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#endif /* AVCODEC_OPUSENC_H */
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