53 lines
No EOL
1.6 KiB
C++
Executable file
53 lines
No EOL
1.6 KiB
C++
Executable file
/*
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* Copyright (C) 2024–2025 Amlogic, Inc. All rights reserved.
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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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*/
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#include "pre_process_whisper.h"
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#include "pre_post_common.h"
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extern bool is_finish;
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std::vector<float> do_pre_process(std::string fname_inp)
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{
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std::vector<float> pcmf32; // mono-channel F32 PCM
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std::vector<std::vector<float>> pcmf32s; // stereo-channel F32 PCM
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struct whisper_context ctx;
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struct whisper_state state;
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if (!read_wav(fname_inp, pcmf32, pcmf32s, false)) {
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fprintf(stderr, "error: failed to read WAV file '%s'\n", fname_inp.c_str());
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is_finish = true;
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return {};
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}
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if (float(pcmf32.size())/WHISPER_SAMPLE_RATE == 0) {
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is_finish = true;
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return {};
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}
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if (whisper_pcm_to_mel_with_state(&ctx, &state, pcmf32.data(), pcmf32.size(), 8) != 0) {
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printf("%s: failed to compute log mel spectrogram\n", __func__);
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}
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std::vector<float> input_data;
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for (int j = 0; j < 80; j++) {
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for (int i = 0; i < 3000; i++) {
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input_data.push_back(state.mel.data[j * state.mel.n_len + i]);
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}
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}
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return input_data;
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} |