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
63 lines
3.8 KiB
C
63 lines
3.8 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_fft2r.h"
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#include "dsp_common.h"
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#include "dsp_types.h"
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#include <math.h>
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#include "esp_attr.h"
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#include "dsps_fft2r_platform.h"
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#if (dsps_bit_rev_lookup_fc32_ae32_enabled == 1)
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esp_err_t dsps_bit_rev_lookup_fc32_ae32(float *data, int reverse_size, uint16_t *reverse_tab)
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{
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int idx_0, idx_1;
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int idx_2, idx_3;
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float *data_i;
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asm volatile ("addi %0, %1, 4" : "=a" (data_i) : "a" (data)); ///data_i = &data[1];
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asm volatile ("srli %0, %0, 1" : "+a" (reverse_size)); /// reverse_size >>= 1;
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asm volatile ("loopnez %0, __loop_end_radix2_reorder_lookup_table" :: "a" (reverse_size)); ///for (i = 0; i < reverse_size; i++) {
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asm volatile ("l16ui %0, %1, 0" : "=a" (idx_0) : "a" (reverse_tab)); //idx_0 = *(reverse_tab + 0); ///idx_0 = reverse_tab[i * 2 + 0];
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asm volatile ("l16ui %0, %1, 2" : "=a" (idx_1) : "a" (reverse_tab)); //idx_1 = *(reverse_tab + 1); ///idx_1 = reverse_tab[i * 2 + 1];
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asm volatile ("l16ui %0, %1, 4" : "=a" (idx_2) : "a" (reverse_tab)); //idx_2 = *(reverse_tab + 2); ///idx_2 = reverse_tab[i * 2 + 2];
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asm volatile ("l16ui %0, %1, 6" : "=a" (idx_3) : "a" (reverse_tab)); //idx_3 = *(reverse_tab + 3); ///idx_3 = reverse_tab[i * 2 + 3];
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asm volatile ("addi %0, %0, 8" : "+a" (reverse_tab)); // reverse_tab += 4;
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asm volatile ("lsx f0, %0, %1" :: "a" (data), "a" (idx_0)); // f0 = *(data + idx_0); //f0 = data[idx_0 + 0];
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asm volatile ("lsx f2, %0, %1" :: "a" (data_i), "a" (idx_0)); // f2 = *(data_i + idx_0); //f2 = data[idx_0 + 1];
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asm volatile ("lsx f1, %0, %1" :: "a" (data), "a" (idx_1)); //f1 = *(data + idx_1); //f1 = data[idx_1 + 0];
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asm volatile ("lsx f3, %0, %1" :: "a" (data_i), "a" (idx_1)); //f3 = *(data_i + idx_1); //f3 = data[idx_1 + 1];
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asm volatile ("ssx f0, %0, %1" :: "a" (data), "a" (idx_1)); //*(data + idx_1) = f0; //data[idx_1 + 0] = f0;
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asm volatile ("ssx f2, %0, %1" :: "a" (data_i), "a" (idx_1)); //*(data_i + idx_1) = f2; //data[idx_1 + 1] = f2;
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asm volatile ("ssx f1, %0, %1" :: "a" (data), "a" (idx_0)); //*(data + idx_0) = f1; //data[idx_0 + 0] = f1;
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asm volatile ("ssx f3, %0, %1" :: "a" (data_i), "a" (idx_0)); //*(data_i + idx_0) = f3;//data[idx_0 + 1] = f3;
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asm volatile ("lsx f0, %0, %1" :: "a" (data), "a" (idx_2)); // f0 = *(data + idx_2); //f0 = data[idx_2 + 0];
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asm volatile ("lsx f2, %0, %1" :: "a" (data_i), "a" (idx_2)); // f2 = *(data_i + idx_2); //f2 = data[idx_2 + 1];
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asm volatile ("lsx f1, %0, %1" :: "a" (data), "a" (idx_3)); //f1 = *(data + idx_3); //f1 = data[idx_3 + 0];
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asm volatile ("lsx f3, %0, %1" :: "a" (data_i), "a" (idx_3)); //f3 = *(data_i + idx_3); //f3 = data[idx_3 + 1];
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asm volatile ("ssx f0, %0, %1" :: "a" (data), "a" (idx_3)); //*(data + idx_3) = f0; //data[idx_3 + 0] = f0;
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asm volatile ("ssx f2, %0, %1" :: "a" (data_i), "a" (idx_3)); //*(data_i + idx_3) = f2; //data[idx_3 + 1] = f2;
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asm volatile ("ssx f1, %0, %1" :: "a" (data), "a" (idx_2)); //*(data + idx_2) = f1; //data[idx_2 + 0] = f1;
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asm volatile ("ssx f3, %0, %1" :: "a" (data_i), "a" (idx_2)); //*(data_i + idx_2) = f3; //data[idx_2 + 1] = f3;
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//}
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asm volatile("__loop_end_radix2_reorder_lookup_table: nop");
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return ESP_OK;
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}
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#endif // dsps_bit_rev_lookup_fc32_ae32_enabled
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