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81 lines
3.0 KiB
81 lines
3.0 KiB
/* |
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* Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at) |
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* |
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* This file is part of libswresample |
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* |
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* libswresample 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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* libswresample 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 libswresample; 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 SWR_INTERNAL_H |
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#define SWR_INTERNAL_H |
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#include "swresample.h" |
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typedef struct AudioData{ |
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uint8_t *ch[SWR_CH_MAX]; |
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uint8_t *data; |
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int ch_count; |
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int bps; |
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int count; |
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int planar; |
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} AudioData; |
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typedef struct SwrContext { //FIXME find unused fields |
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const AVClass *av_class; |
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int log_level_offset; |
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void *log_ctx; |
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enum AVSampleFormat in_sample_fmt; |
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enum AVSampleFormat int_sample_fmt; ///<AV_SAMPLE_FMT_FLT OR AV_SAMPLE_FMT_S16 |
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enum AVSampleFormat out_sample_fmt; |
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int64_t in_ch_layout; |
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int64_t out_ch_layout; |
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int in_sample_rate; |
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int out_sample_rate; |
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int flags; |
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float slev, clev, rematrix_volume; |
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const int *channel_map; ///< channel index (or -1 if muted channel) map |
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int used_ch_count; ///< number of used channels (mapped channel count if channel_map, otherwise in.ch_count) |
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//below are private |
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int int_bps; |
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int resample_first; |
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int rematrix; ///< flag to indicate if rematrixing is used |
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AudioData in, postin, midbuf, preout, out, in_buffer; |
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int in_buffer_index; |
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int in_buffer_count; |
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int resample_in_constraint; |
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struct AVAudioConvert *in_convert; |
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struct AVAudioConvert *out_convert; |
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struct AVAudioConvert *full_convert; |
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struct AVResampleContext *resample; |
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float matrix[SWR_CH_MAX][SWR_CH_MAX]; |
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int32_t matrix32[SWR_CH_MAX][SWR_CH_MAX]; |
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uint8_t matrix_ch[SWR_CH_MAX][SWR_CH_MAX+1]; |
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//TODO callbacks for asm optims |
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}SwrContext; |
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struct AVResampleContext *swr_resample_init(struct AVResampleContext *, int out_rate, int in_rate, int filter_size, int phase_shift, int linear, double cutoff); |
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void swr_resample_free(struct AVResampleContext **c); |
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int swr_multiple_resample(struct AVResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed); |
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void swr_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); |
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int swr_resample(struct AVResampleContext *c, short *dst, const short *src, int *consumed, int src_size, int dst_size, int update_ctx); |
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int swr_rematrix_init(SwrContext *s); |
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int swr_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy); |
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#endif
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