226 lines
7.7 KiB
C++
226 lines
7.7 KiB
C++
#include "whisper.h"
|
||
#include "common.h"
|
||
|
||
#define MINIAUDIO_IMPLEMENTATION
|
||
#include "miniaudio.h"
|
||
|
||
#include <vector>
|
||
#include <cstdio>
|
||
#include <string>
|
||
#include <atomic>
|
||
#include <chrono>
|
||
#include <thread>
|
||
#include <csignal>
|
||
#include <cstdlib>
|
||
#include <algorithm>
|
||
#include <cstring>
|
||
#include <mutex>
|
||
#include <unistd.h>
|
||
#include <fcntl.h>
|
||
#include <sys/select.h>
|
||
|
||
// =============================================
|
||
// 全局状态管理
|
||
// =============================================
|
||
std::atomic<bool> is_recording(false);
|
||
std::atomic<bool> exit_program(false);
|
||
std::atomic<int> recorded_seconds(0);
|
||
|
||
// 音频缓冲区与锁
|
||
std::vector<float> audio_buffer;
|
||
std::mutex buffer_mutex;
|
||
|
||
// 配置常量
|
||
int RECORD_TIMEOUT = 30; // 可变，支持动态测试
|
||
|
||
// =============================================
|
||
// 系统工具函数
|
||
// =============================================
|
||
|
||
void signal_handler(int sig) {
|
||
if (sig == SIGINT) {
|
||
printf("\n\n🛑 收到退出信号，正在清理资源...\n");
|
||
exit_program.store(true);
|
||
is_recording.store(false);
|
||
std::this_thread::sleep_for(std::chrono::milliseconds(100));
|
||
exit(0);
|
||
}
|
||
}
|
||
|
||
// 非阻塞检查标准输入（带毫秒超时）
|
||
bool check_input_non_blocking(int timeout_ms = 20) {
|
||
fd_set fds;
|
||
FD_ZERO(&fds);
|
||
FD_SET(STDIN_FILENO, &fds);
|
||
struct timeval tv;
|
||
tv.tv_sec = 0;
|
||
tv.tv_usec = timeout_ms * 1000;
|
||
int ret;
|
||
do {
|
||
ret = select(STDIN_FILENO + 1, &fds, NULL, NULL, &tv);
|
||
} while (ret == -1 && errno == EINTR);
|
||
return ret > 0;
|
||
}
|
||
|
||
void clear_input_buffer() {
|
||
while (check_input_non_blocking(5)) {
|
||
char c;
|
||
read(STDIN_FILENO, &c, 1);
|
||
}
|
||
}
|
||
|
||
// =============================================
|
||
// 音频回调 (硬件驱动层)
|
||
// =============================================
|
||
void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount) {
|
||
// 只要 is_recording 为 true，回调就会持续把数据写入 buffer
|
||
if (!is_recording.load() || pInput == NULL) return;
|
||
const float* pInputFloat = (const float*)pInput;
|
||
std::lock_guard<std::mutex> lock(buffer_mutex);
|
||
audio_buffer.insert(audio_buffer.end(), pInputFloat, pInputFloat + frameCount);
|
||
recorded_seconds.store(static_cast<int>(audio_buffer.size() / 16000.0));
|
||
}
|
||
|
||
// =============================================
|
||
// 识别逻辑
|
||
// =============================================
|
||
void recognize_audio(struct whisper_context* ctx, const std::vector<float>& audio_data) {
|
||
if (audio_data.empty()) return;
|
||
float total_sec = (float)audio_data.size() / 16000.0f;
|
||
|
||
printf("\n🔍 正在识别（总采样长度：%.2fs）...\n", total_sec);
|
||
|
||
auto t_start = std::chrono::steady_clock::now();
|
||
|
||
whisper_full_params wparams = whisper_full_default_params(WHISPER_SAMPLING_GREEDY);
|
||
wparams.language = "zh";
|
||
wparams.n_threads = std::max(2, (int)std::thread::hardware_concurrency());
|
||
wparams.print_progress = false;
|
||
|
||
if (whisper_full(ctx, wparams, audio_data.data(), audio_data.size()) != 0) {
|
||
fprintf(stderr, "❌ Whisper 推理失败\n");
|
||
return;
|
||
}
|
||
|
||
auto t_end = std::chrono::steady_clock::now();
|
||
float msec = std::chrono::duration<float, std::milli>(t_end - t_start).count();
|
||
|
||
printf("⏱️ 推理耗时：%.2f 秒 | 速度：%.2fx 实时\n", msec/1000.0f, total_sec/(msec/1000.0f));
|
||
|
||
int n_segments = whisper_full_n_segments(ctx);
|
||
printf("📝 结果：\n");
|
||
for (int i = 0; i < n_segments; ++i) {
|
||
printf(" %s\n", whisper_full_get_segment_text(ctx, i));
|
||
}
|
||
}
|
||
|
||
// =============================================
|
||
// 主程序
|
||
// =============================================
|
||
int main(int argc, char** argv) {
|
||
signal(SIGINT, signal_handler);
|
||
if (argc < 2) {
|
||
printf("Usage: %s <model_path> [timeout_seconds]\n", argv[0]);
|
||
return 1;
|
||
}
|
||
if (argc >= 3) {
|
||
RECORD_TIMEOUT = atoi(argv[2]);
|
||
}
|
||
|
||
// 1. Whisper 初始化 (强制 GPU 后端)
|
||
struct whisper_context_params cparams = whisper_context_default_params();
|
||
cparams.use_gpu = true;
|
||
struct whisper_context* ctx = whisper_init_from_file_with_params(argv[1], cparams);
|
||
if (!ctx) return 1;
|
||
|
||
// 2. 音频设备初始化 (AB13X USB)
|
||
ma_context context;
|
||
ma_context_init(NULL, 0, NULL, &context);
|
||
ma_device_config devCfg = ma_device_config_init(ma_device_type_capture);
|
||
devCfg.capture.format = ma_format_f32;
|
||
devCfg.capture.channels = 1;
|
||
devCfg.sampleRate = 16000;
|
||
devCfg.dataCallback = data_callback;
|
||
|
||
ma_device device;
|
||
if (ma_device_init(&context, &devCfg, &device) != MA_SUCCESS) return 1;
|
||
ma_device_start(&device);
|
||
|
||
while (!exit_program.load()) {
|
||
printf("\n=============================================\n");
|
||
printf("🎙️ 操作提示 (当前超时: %d秒):\n", RECORD_TIMEOUT);
|
||
printf(" ▶ [回车键] : 开始录制\n");
|
||
printf(" ■ [回车键] : 停止录制 (会有1.5秒平滑收尾)\n");
|
||
printf("=============================================\n");
|
||
printf("👉 等待指令...");
|
||
fflush(stdout);
|
||
|
||
while (!check_input_non_blocking(50) && !exit_program.load());
|
||
if (exit_program.load()) break;
|
||
clear_input_buffer();
|
||
|
||
// 重置状态
|
||
{ std::lock_guard<std::mutex> lock(buffer_mutex); audio_buffer.clear(); }
|
||
recorded_seconds.store(0);
|
||
is_recording.store(true);
|
||
auto start_time = std::chrono::steady_clock::now();
|
||
|
||
printf("\n🎙️ 正在录制 (进度将在下方实时更新)... \n");
|
||
|
||
// 进度显示线程
|
||
std::thread progress_thread([&]() {
|
||
while (is_recording.load() && !exit_program.load()) {
|
||
printf("\r📊 进度: %d 秒 ", recorded_seconds.load());
|
||
fflush(stdout);
|
||
std::this_thread::sleep_for(std::chrono::milliseconds(200));
|
||
}
|
||
});
|
||
|
||
bool stop_triggered = false;
|
||
while (!exit_program.load() && !stop_triggered) {
|
||
auto now = std::chrono::steady_clock::now();
|
||
double elapsed_ms = std::chrono::duration<double, std::milli>(now - start_time).count();
|
||
|
||
// 检查手动停止
|
||
if (check_input_non_blocking(10)) {
|
||
char c;
|
||
if (read(STDIN_FILENO, &c, 1) > 0 && c == '\n') {
|
||
printf("\n🛑 检测到手动回车，准备收尾...");
|
||
stop_triggered = true;
|
||
}
|
||
}
|
||
// 检查超时停止
|
||
else if (elapsed_ms >= (RECORD_TIMEOUT * 1000)) {
|
||
printf("\n⏱️ 达到 %d 秒阈值，准备收尾...", RECORD_TIMEOUT);
|
||
stop_triggered = true;
|
||
}
|
||
std::this_thread::sleep_for(std::chrono::milliseconds(5));
|
||
}
|
||
|
||
// --- 核心改动：平滑收尾逻辑 ---
|
||
// 即使触发了停止，我们也不立即关闭 is_recording 开关
|
||
// 这样可以确保正在 ALSA 缓冲区或 DMA 队列里的数据被 data_callback 继续捞走
|
||
if (stop_triggered) {
|
||
printf("正在执行 1.5 秒平滑数据刷新...");
|
||
fflush(stdout);
|
||
std::this_thread::sleep_for(std::chrono::milliseconds(1500));
|
||
is_recording.store(false); // 此时才真正切断回调写入
|
||
printf("完成。\n");
|
||
}
|
||
|
||
if (progress_thread.joinable()) progress_thread.join();
|
||
|
||
// 拷贝数据进行识别
|
||
std::vector<float> captured;
|
||
{
|
||
std::lock_guard<std::mutex> lock(buffer_mutex);
|
||
captured = audio_buffer;
|
||
}
|
||
recognize_audio(ctx, captured);
|
||
}
|
||
|
||
ma_device_uninit(&device);
|
||
ma_context_uninit(&context);
|
||
whisper_free(ctx);
|
||
return 0;
|
||
} |