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
65 lines
1.7 KiB
ArmAsm
65 lines
1.7 KiB
ArmAsm
// 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_dotprod_platform.h"
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#if (dotprode_f32_ae32_enabled == 1)
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#include "dsps_dotprode_f32_m_ae32.S"
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// This is dot product function for ESP32 processor.
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.text
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.align 4
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.global dsps_dotprode_f32_ae32
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.type dsps_dotprode_f32_ae32,@function
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// The function implements the following C code:
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//esp_err_t dsps_dotprod_f32_ae32(const float* src1, const float* src2, float* dest, int len)
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//{
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// float acc = 0;
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// for (int i=0 ; i< len ; i++)
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// {
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// acc += src1[i]*src2[i];
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// }
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// *dest = acc;
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// return ESP_OK;
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//}
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dsps_dotprode_f32_ae32:
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// src1 - a2
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// src2 - a3
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// dest - a4
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// len - a5
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// step1- a6
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// step2- a7
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entry a1, 16
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// Array increment for floating point data should be 4
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slli a6,a6, 2
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slli a7,a7, 2
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// Clear initial state of the result register
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movi.n a9, 0
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wfr f1, a9
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// a2 - input1
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// a3 - input2
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// a5 - length
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// a6,a7, step in arrays
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dotprode_f32_ae32 a2, a3, a5, a6, a7;
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ssi f1, a4, 0 // Store result from f1 to memory at a4
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movi.n a2, 0 // return status ESP_OK
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retw.n
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#endif //dotprode_f32_ae32_enabled
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