15b4baba28
- minimize RAM usage of all components - use both IRAM and DRAM in player component so we can buffer up to 1s on modules without SPI RAM - support fragemented pcm chunks so we can use all available RAM if there isn't a big enough block available but still enough HEAP - reinclude all components from jorgen's master branch - add custom i2s driver to get a precise timing of initial sync - change wrong usage of esp_timer for latency measurement of snapcast protocol - add player component
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dsps_conv.h"
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#include "esp_log.h"
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static const char *TAG = "dsps_conv";
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esp_err_t dsps_conv_f32_ansi(const float *Signal, const int siglen, const float *Kernel, const int kernlen, float *convout)
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{
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if (NULL == Signal) {
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return ESP_ERR_DSP_PARAM_OUTOFRANGE;
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}
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if (NULL == Kernel) {
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return ESP_ERR_DSP_PARAM_OUTOFRANGE;
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}
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if (NULL == convout) {
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return ESP_ERR_DSP_PARAM_OUTOFRANGE;
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}
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float *sig = (float *)Signal;
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float *kern = (float *)Kernel;
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int lsig = siglen;
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int lkern = kernlen;
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if (siglen < kernlen) {
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sig = (float *)Kernel;
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kern = (float *)Signal;
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lsig = kernlen;
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lkern = siglen;
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}
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for (int n = 0; n < lkern; n++) {
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size_t k;
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convout[n] = 0;
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for (k = 0; k <= n; k++) {
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convout[n] += sig[k] * kern[n - k];
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}
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ESP_LOGV(TAG,"L1 kmin = %i, kmax = %i , n-kmin = %i", 0, n, n);
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}
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for (int n = lkern; n < lsig; n++) {
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size_t kmin, kmax, k;
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convout[n] = 0;
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kmin = n - lkern + 1;
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kmax = n;
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ESP_LOGV(TAG,"L2 n=%i, kmin = %i, kmax = %i , n-kmin = %i", n, kmin, kmax, n-kmin);
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for (k = kmin; k <= kmax; k++) {
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convout[n] += sig[k] * kern[n - k];
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}
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}
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for (int n = lsig; n < lsig + lkern - 1; n++) {
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size_t kmin, kmax, k;
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convout[n] = 0;
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kmin = n - lkern + 1;
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kmax = lsig - 1;
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for (k = kmin; k <= kmax; k++) {
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convout[n] += sig[k] * kern[n - k];
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}
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ESP_LOGV(TAG,"L3 n=%i, kmin = %i, kmax = %i , n-kmin = %i", n, kmin, kmax, n-kmin);
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}
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return ESP_OK;
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} |