154 lines
6.2 KiB
C++
154 lines
6.2 KiB
C++
#include "whisper.h"
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#include "common.h"
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#define MINIAUDIO_IMPLEMENTATION
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#include "miniaudio.h"
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#include <vector>
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#include <cstdio>
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#include <atomic>
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#include <chrono>
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#include <thread>
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#include <csignal>
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#include <mutex>
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#include <unistd.h>
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#include <sys/select.h>
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// =============================================
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// 1. 工程常量定义 (拒绝 Magic Numbers)
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// =============================================
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struct RecordingConfig {
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static constexpr int SAMPLE_RATE = 16000;
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static constexpr int PROGRESS_REFRESH_MS = 100; // 进度条刷新频率
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static constexpr int UI_WAIT_MS = 10; // 循环等待步长
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static constexpr int INPUT_CHECK_MS = 20; // 输入检测超时
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static constexpr int POST_STOP_BUFFER_MS = 1500; // 停止后的平滑采样缓冲
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static constexpr int CLOCK_TOLERANCE_MS = 200; // 系统时钟容差（确保跳到目标秒数）
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};
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// 全局状态管理
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std::atomic<bool> is_recording(false);
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std::atomic<bool> exit_program(false);
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std::atomic<int> recorded_seconds(0);
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std::vector<float> audio_buffer;
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std::mutex buffer_mutex;
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int g_timeout_setting = 30; // 用户设定的超时秒数
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// =============================================
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// 系统辅助函数
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// =============================================
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void signal_handler(int sig) {
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if (sig == SIGINT) {
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exit_program.store(true);
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is_recording.store(false);
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exit(0);
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}
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}
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bool check_input_non_blocking(int timeout_ms = RecordingConfig::INPUT_CHECK_MS) {
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fd_set fds; FD_ZERO(&fds); FD_SET(STDIN_FILENO, &fds);
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struct timeval tv = {0, timeout_ms * 1000};
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return select(STDIN_FILENO + 1, &fds, NULL, NULL, &tv) > 0;
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}
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// =============================================
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// 音频回调
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// =============================================
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void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount) {
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if (!is_recording.load() || pInput == NULL) return;
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std::lock_guard<std::mutex> lock(buffer_mutex);
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audio_buffer.insert(audio_buffer.end(), (float*)pInput, (float*)pInput + frameCount);
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recorded_seconds.store(static_cast<int>(audio_buffer.size() / (float)RecordingConfig::SAMPLE_RATE));
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}
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// =============================================
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// 主逻辑
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// =============================================
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int main(int argc, char** argv) {
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signal(SIGINT, signal_handler);
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if (argc < 2) return 1;
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if (argc >= 3) g_timeout_setting = atoi(argv[2]);
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// 初始化 Whisper
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struct whisper_context_params cparams = whisper_context_default_params();
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cparams.use_gpu = true;
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struct whisper_context* ctx = whisper_init_from_file_with_params(argv[1], cparams);
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// 麦克风设备枚举与选择
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ma_context context; ma_context_init(NULL, 0, NULL, &context);
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ma_device_info* pCapInfos; ma_uint32 capCount;
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ma_context_get_devices(&context, NULL, NULL, &pCapInfos, &capCount);
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for (ma_uint32 i = 0; i < capCount; ++i) printf("[%u] %s\n", i, pCapInfos[i].name);
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printf("👉 请输入设备 ID: ");
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ma_uint32 dev_id; scanf("%u", &dev_id);
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while (getchar() != '\n');
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ma_device_config devCfg = ma_device_config_init(ma_device_type_capture);
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devCfg.capture.format = ma_format_f32;
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devCfg.capture.channels = 1;
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devCfg.sampleRate = RecordingConfig::SAMPLE_RATE;
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devCfg.dataCallback = data_callback;
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if (dev_id < capCount) devCfg.capture.pDeviceID = &pCapInfos[dev_id].id;
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ma_device device; ma_device_init(&context, &devCfg, &device);
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ma_device_start(&device);
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while (!exit_program.load()) {
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printf("\n[回车] 录制 | [回车] 停止\n👉 等待指令...");
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while (!check_input_non_blocking(50) && !exit_program.load());
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if (exit_program.load()) break;
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while (check_input_non_blocking(0)) getchar();
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{ std::lock_guard<std::mutex> lock(buffer_mutex); audio_buffer.clear(); }
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is_recording.store(true);
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auto start_time = std::chrono::steady_clock::now();
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// 进度显示线程
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std::thread progress_thread([&]() {
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while (is_recording.load()) {
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printf("\r📊 进度: %d 秒 ", recorded_seconds.load());
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fflush(stdout);
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std::this_thread::sleep_for(std::chrono::milliseconds(RecordingConfig::PROGRESS_REFRESH_MS));
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}
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});
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bool stop_triggered = false;
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while (!stop_triggered && !exit_program.load()) {
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auto now = std::chrono::steady_clock::now();
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auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time).count();
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if (check_input_non_blocking(RecordingConfig::UI_WAIT_MS)) {
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if (getchar() == '\n') {
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printf("\n🛑 手动停止 (进入平滑刷新模式)...");
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stop_triggered = true;
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}
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}
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// 修正边界：加上 CLOCK_TOLERANCE_MS 确保进度条在视觉上能显示到设定的秒数
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else if (elapsed >= (g_timeout_setting * 1000 + RecordingConfig::CLOCK_TOLERANCE_MS)) {
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printf("\r📊 进度: %d 秒 ", g_timeout_setting); // 强制补完最后一秒显示
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printf("\n⏱️ 超时停止 (%d秒，进入平滑刷新模式)...", g_timeout_setting);
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stop_triggered = true;
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}
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}
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// 平滑刷新：等待硬件缓冲区数据入库，防止丢字
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std::this_thread::sleep_for(std::chrono::milliseconds(RecordingConfig::POST_STOP_BUFFER_MS));
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is_recording.store(false);
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if (progress_thread.joinable()) progress_thread.join();
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// 识别逻辑
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std::vector<float> captured;
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{ std::lock_guard<std::mutex> lock(buffer_mutex); captured = audio_buffer; }
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printf("\n🔍 识别中 (音频长: %.2fs)...", (float)captured.size()/RecordingConfig::SAMPLE_RATE);
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whisper_full_params wparams = whisper_full_default_params(WHISPER_SAMPLING_GREEDY);
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wparams.language = "zh";
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wparams.n_threads = 4;
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whisper_full(ctx, wparams, captured.data(), captured.size());
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int n_segments = whisper_full_n_segments(ctx);
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for (int i = 0; i < n_segments; ++i) printf("\n📝 %s", whisper_full_get_segment_text(ctx, i));
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printf("\n");
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}
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return 0;
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} |