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416 lines
19 KiB
416 lines
19 KiB
/* |
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> |
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* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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#include <stdint.h> |
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#include "config.h" |
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#include "libavutil/common.h" |
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#include "libavutil/libm.h" |
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#include "libavutil/log.h" |
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#include "libavutil/mem.h" |
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#include "libavutil/samplefmt.h" |
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#include "audio_convert.h" |
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#include "audio_data.h" |
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#include "dither.h" |
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enum ConvFuncType { |
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CONV_FUNC_TYPE_FLAT, |
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CONV_FUNC_TYPE_INTERLEAVE, |
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CONV_FUNC_TYPE_DEINTERLEAVE, |
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}; |
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typedef void (conv_func_flat)(uint8_t *out, const uint8_t *in, int len); |
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typedef void (conv_func_interleave)(uint8_t *out, uint8_t *const *in, |
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int len, int channels); |
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typedef void (conv_func_deinterleave)(uint8_t **out, const uint8_t *in, int len, |
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int channels); |
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struct AudioConvert { |
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AVAudioResampleContext *avr; |
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DitherContext *dc; |
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enum AVSampleFormat in_fmt; |
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enum AVSampleFormat out_fmt; |
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int apply_map; |
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int channels; |
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int planes; |
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int ptr_align; |
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int samples_align; |
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int has_optimized_func; |
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const char *func_descr; |
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const char *func_descr_generic; |
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enum ConvFuncType func_type; |
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conv_func_flat *conv_flat; |
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conv_func_flat *conv_flat_generic; |
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conv_func_interleave *conv_interleave; |
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conv_func_interleave *conv_interleave_generic; |
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conv_func_deinterleave *conv_deinterleave; |
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conv_func_deinterleave *conv_deinterleave_generic; |
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}; |
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void ff_audio_convert_set_func(AudioConvert *ac, enum AVSampleFormat out_fmt, |
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enum AVSampleFormat in_fmt, int channels, |
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int ptr_align, int samples_align, |
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const char *descr, void *conv) |
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{ |
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int found = 0; |
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switch (ac->func_type) { |
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case CONV_FUNC_TYPE_FLAT: |
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if (av_get_packed_sample_fmt(ac->in_fmt) == in_fmt && |
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av_get_packed_sample_fmt(ac->out_fmt) == out_fmt) { |
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ac->conv_flat = conv; |
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ac->func_descr = descr; |
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ac->ptr_align = ptr_align; |
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ac->samples_align = samples_align; |
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if (ptr_align == 1 && samples_align == 1) { |
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ac->conv_flat_generic = conv; |
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ac->func_descr_generic = descr; |
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} else { |
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ac->has_optimized_func = 1; |
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} |
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found = 1; |
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} |
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break; |
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case CONV_FUNC_TYPE_INTERLEAVE: |
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if (ac->in_fmt == in_fmt && ac->out_fmt == out_fmt && |
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(!channels || ac->channels == channels)) { |
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ac->conv_interleave = conv; |
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ac->func_descr = descr; |
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ac->ptr_align = ptr_align; |
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ac->samples_align = samples_align; |
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if (ptr_align == 1 && samples_align == 1) { |
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ac->conv_interleave_generic = conv; |
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ac->func_descr_generic = descr; |
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} else { |
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ac->has_optimized_func = 1; |
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} |
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found = 1; |
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} |
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break; |
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case CONV_FUNC_TYPE_DEINTERLEAVE: |
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if (ac->in_fmt == in_fmt && ac->out_fmt == out_fmt && |
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(!channels || ac->channels == channels)) { |
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ac->conv_deinterleave = conv; |
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ac->func_descr = descr; |
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ac->ptr_align = ptr_align; |
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ac->samples_align = samples_align; |
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if (ptr_align == 1 && samples_align == 1) { |
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ac->conv_deinterleave_generic = conv; |
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ac->func_descr_generic = descr; |
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} else { |
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ac->has_optimized_func = 1; |
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} |
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found = 1; |
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} |
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break; |
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} |
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if (found) { |
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av_log(ac->avr, AV_LOG_DEBUG, "audio_convert: found function: %-4s " |
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"to %-4s (%s)\n", av_get_sample_fmt_name(ac->in_fmt), |
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av_get_sample_fmt_name(ac->out_fmt), descr); |
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} |
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} |
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#define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt |
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#define CONV_LOOP(otype, expr) \ |
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do { \ |
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*(otype *)po = expr; \ |
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pi += is; \ |
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po += os; \ |
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} while (po < end); \ |
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#define CONV_FUNC_FLAT(ofmt, otype, ifmt, itype, expr) \ |
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static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *out, const uint8_t *in, \ |
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int len) \ |
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{ \ |
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int is = sizeof(itype); \ |
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int os = sizeof(otype); \ |
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const uint8_t *pi = in; \ |
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uint8_t *po = out; \ |
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uint8_t *end = out + os * len; \ |
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CONV_LOOP(otype, expr) \ |
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} |
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#define CONV_FUNC_INTERLEAVE(ofmt, otype, ifmt, itype, expr) \ |
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static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *out, const uint8_t **in, \ |
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int len, int channels) \ |
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{ \ |
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int ch; \ |
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int out_bps = sizeof(otype); \ |
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int is = sizeof(itype); \ |
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int os = channels * out_bps; \ |
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for (ch = 0; ch < channels; ch++) { \ |
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const uint8_t *pi = in[ch]; \ |
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uint8_t *po = out + ch * out_bps; \ |
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uint8_t *end = po + os * len; \ |
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CONV_LOOP(otype, expr) \ |
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} \ |
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} |
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#define CONV_FUNC_DEINTERLEAVE(ofmt, otype, ifmt, itype, expr) \ |
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static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t **out, const uint8_t *in, \ |
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int len, int channels) \ |
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{ \ |
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int ch; \ |
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int in_bps = sizeof(itype); \ |
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int is = channels * in_bps; \ |
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int os = sizeof(otype); \ |
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for (ch = 0; ch < channels; ch++) { \ |
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const uint8_t *pi = in + ch * in_bps; \ |
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uint8_t *po = out[ch]; \ |
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uint8_t *end = po + os * len; \ |
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CONV_LOOP(otype, expr) \ |
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} \ |
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} |
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#define CONV_FUNC_GROUP(ofmt, otype, ifmt, itype, expr) \ |
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CONV_FUNC_FLAT( ofmt, otype, ifmt, itype, expr) \ |
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CONV_FUNC_INTERLEAVE( ofmt, otype, ifmt ## P, itype, expr) \ |
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CONV_FUNC_DEINTERLEAVE(ofmt ## P, otype, ifmt, itype, expr) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_U8, uint8_t, *(const uint8_t *)pi) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_U8, uint8_t, (*(const uint8_t *)pi - 0x80) << 8) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_U8, uint8_t, (*(const uint8_t *)pi - 0x80) << 24) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t, (*(const uint8_t *)pi - 0x80) * (1.0f / (1 << 7))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t, (*(const uint8_t *)pi - 0x80) * (1.0 / (1 << 7))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t, (*(const int16_t *)pi >> 8) + 0x80) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *)pi) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *)pi << 16) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *)pi * (1.0f / (1 << 15))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *)pi * (1.0 / (1 << 15))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t, (*(const int32_t *)pi >> 24) + 0x80) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *)pi >> 16) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *)pi) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *)pi * (1.0f / (1U << 31))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *)pi * (1.0 / (1U << 31))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8( lrintf(*(const float *)pi * (1 << 7)) + 0x80)) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16( lrintf(*(const float *)pi * (1 << 15)))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *)pi * (1U << 31)))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_FLT, float, *(const float *)pi) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_FLT, float, *(const float *)pi) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8( lrint(*(const double *)pi * (1 << 7)) + 0x80)) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16( lrint(*(const double *)pi * (1 << 15)))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *)pi * (1U << 31)))) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_DBL, double, *(const double *)pi) |
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CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_DBL, double, *(const double *)pi) |
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#define SET_CONV_FUNC_GROUP(ofmt, ifmt) \ |
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ff_audio_convert_set_func(ac, ofmt, ifmt, 0, 1, 1, "C", CONV_FUNC_NAME(ofmt, ifmt)); \ |
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ff_audio_convert_set_func(ac, ofmt ## P, ifmt, 0, 1, 1, "C", CONV_FUNC_NAME(ofmt ## P, ifmt)); \ |
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ff_audio_convert_set_func(ac, ofmt, ifmt ## P, 0, 1, 1, "C", CONV_FUNC_NAME(ofmt, ifmt ## P)); |
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static void set_generic_function(AudioConvert *ac) |
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{ |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL) |
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SET_CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL) |
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} |
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void ff_audio_convert_free(AudioConvert **ac) |
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{ |
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if (!*ac) |
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return; |
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ff_dither_free(&(*ac)->dc); |
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av_freep(ac); |
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} |
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AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, |
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enum AVSampleFormat out_fmt, |
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enum AVSampleFormat in_fmt, |
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int channels, int sample_rate, |
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int apply_map) |
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{ |
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AudioConvert *ac; |
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int in_planar, out_planar; |
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ac = av_mallocz(sizeof(*ac)); |
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if (!ac) |
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return NULL; |
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ac->avr = avr; |
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ac->out_fmt = out_fmt; |
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ac->in_fmt = in_fmt; |
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ac->channels = channels; |
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ac->apply_map = apply_map; |
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if (avr->dither_method != AV_RESAMPLE_DITHER_NONE && |
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av_get_packed_sample_fmt(out_fmt) == AV_SAMPLE_FMT_S16 && |
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av_get_bytes_per_sample(in_fmt) > 2) { |
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ac->dc = ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, |
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apply_map); |
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if (!ac->dc) { |
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av_free(ac); |
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return NULL; |
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} |
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return ac; |
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} |
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in_planar = ff_sample_fmt_is_planar(in_fmt, channels); |
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out_planar = ff_sample_fmt_is_planar(out_fmt, channels); |
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if (in_planar == out_planar) { |
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ac->func_type = CONV_FUNC_TYPE_FLAT; |
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ac->planes = in_planar ? ac->channels : 1; |
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} else if (in_planar) |
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ac->func_type = CONV_FUNC_TYPE_INTERLEAVE; |
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else |
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ac->func_type = CONV_FUNC_TYPE_DEINTERLEAVE; |
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set_generic_function(ac); |
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if (ARCH_AARCH64) |
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ff_audio_convert_init_aarch64(ac); |
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if (ARCH_ARM) |
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ff_audio_convert_init_arm(ac); |
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if (ARCH_X86) |
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ff_audio_convert_init_x86(ac); |
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return ac; |
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} |
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int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) |
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{ |
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int use_generic = 1; |
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int len = in->nb_samples; |
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int p; |
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if (ac->dc) { |
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/* dithered conversion */ |
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av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (dithered)\n", |
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len, av_get_sample_fmt_name(ac->in_fmt), |
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av_get_sample_fmt_name(ac->out_fmt)); |
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return ff_convert_dither(ac->dc, out, in); |
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} |
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/* determine whether to use the optimized function based on pointer and |
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samples alignment in both the input and output */ |
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if (ac->has_optimized_func) { |
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int ptr_align = FFMIN(in->ptr_align, out->ptr_align); |
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int samples_align = FFMIN(in->samples_align, out->samples_align); |
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int aligned_len = FFALIGN(len, ac->samples_align); |
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if (!(ptr_align % ac->ptr_align) && samples_align >= aligned_len) { |
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len = aligned_len; |
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use_generic = 0; |
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} |
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} |
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av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (%s)\n", len, |
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av_get_sample_fmt_name(ac->in_fmt), |
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av_get_sample_fmt_name(ac->out_fmt), |
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use_generic ? ac->func_descr_generic : ac->func_descr); |
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if (ac->apply_map) { |
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ChannelMapInfo *map = &ac->avr->ch_map_info; |
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if (!av_sample_fmt_is_planar(ac->out_fmt)) { |
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av_log(ac->avr, AV_LOG_ERROR, "cannot remap packed format during conversion\n"); |
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return AVERROR(EINVAL); |
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} |
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if (map->do_remap) { |
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if (av_sample_fmt_is_planar(ac->in_fmt)) { |
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conv_func_flat *convert = use_generic ? ac->conv_flat_generic : |
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ac->conv_flat; |
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for (p = 0; p < ac->planes; p++) |
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if (map->channel_map[p] >= 0) |
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convert(out->data[p], in->data[map->channel_map[p]], len); |
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} else { |
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uint8_t *data[AVRESAMPLE_MAX_CHANNELS]; |
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conv_func_deinterleave *convert = use_generic ? |
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ac->conv_deinterleave_generic : |
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ac->conv_deinterleave; |
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|
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for (p = 0; p < ac->channels; p++) |
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data[map->input_map[p]] = out->data[p]; |
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|
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convert(data, in->data[0], len, ac->channels); |
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} |
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} |
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if (map->do_copy || map->do_zero) { |
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for (p = 0; p < ac->planes; p++) { |
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if (map->channel_copy[p]) |
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memcpy(out->data[p], out->data[map->channel_copy[p]], |
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len * out->stride); |
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else if (map->channel_zero[p]) |
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av_samples_set_silence(&out->data[p], 0, len, 1, ac->out_fmt); |
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} |
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} |
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} else { |
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switch (ac->func_type) { |
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case CONV_FUNC_TYPE_FLAT: { |
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if (!in->is_planar) |
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len *= in->channels; |
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if (use_generic) { |
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for (p = 0; p < ac->planes; p++) |
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ac->conv_flat_generic(out->data[p], in->data[p], len); |
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} else { |
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for (p = 0; p < ac->planes; p++) |
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ac->conv_flat(out->data[p], in->data[p], len); |
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} |
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break; |
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} |
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case CONV_FUNC_TYPE_INTERLEAVE: |
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if (use_generic) |
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ac->conv_interleave_generic(out->data[0], in->data, len, |
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ac->channels); |
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else |
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ac->conv_interleave(out->data[0], in->data, len, ac->channels); |
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break; |
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case CONV_FUNC_TYPE_DEINTERLEAVE: |
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if (use_generic) |
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ac->conv_deinterleave_generic(out->data, in->data[0], len, |
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ac->channels); |
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else |
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ac->conv_deinterleave(out->data, in->data[0], len, |
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ac->channels); |
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break; |
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} |
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} |
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|
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out->nb_samples = in->nb_samples; |
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return 0; |
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}
|
|
|