Enable audio transmission

2025-10-26 20:25:34 +08:00 · 2023-11-29 22:04:53 -08:00
parent 733434f9b3
commit 4a65a59803
12 changed files with 1520 additions and 271 deletions
--- a/test/audio_capture/play_audio.cpp
+++ b/test/audio_capture/play_audio.cpp
@@ -0,0 +1,89 @@
+#include <SDL2/SDL.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char* argv[]) {
+  if (SDL_Init(SDL_INIT_AUDIO)) {
+    printf("SDL init error\n");
+    return -1;
+  }
+
+  // SDL_AudioSpec
+  SDL_AudioSpec wanted_spec;
+  SDL_zero(wanted_spec);
+  wanted_spec.freq = 48000;
+  wanted_spec.format = AUDIO_S16LSB;
+  wanted_spec.channels = 2;
+  wanted_spec.silence = 0;
+  wanted_spec.samples = 960;
+  wanted_spec.callback = NULL;
+
+  SDL_AudioDeviceID deviceID = 0;
+  // <20><><EFBFBD><EFBFBD><EFBFBD>豸
+  if ((deviceID = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, NULL,
+                                      SDL_AUDIO_ALLOW_FREQUENCY_CHANGE)) < 2) {
+    printf("could not open audio device: %s\n", SDL_GetError());
+
+    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD>ϵͳ
+    SDL_Quit();
+    return 0;
+  }
+
+  SDL_PauseAudioDevice(deviceID, 0);
+
+  FILE* fp = nullptr;
+
+  fopen_s(&fp, "ls.pcm", "rb+");
+  if (fp == NULL) {
+    printf("cannot open this file\n");
+    return -1;
+  }
+
+  if (fp == NULL) {
+    printf("error \n");
+  }
+  Uint32 buffer_size = 4096;
+  char* buffer = (char*)malloc(buffer_size);
+
+  while (true) {
+    if (fread(buffer, 1, buffer_size, fp) != buffer_size) {
+      printf("end of file\n");
+      break;
+    }
+    SDL_QueueAudio(deviceID, buffer, buffer_size);
+  }
+
+  printf("Play...\n");
+
+  SDL_Delay(10000);
+
+  // Uint32 residueAudioLen = 0;
+
+  // while (true) {
+  //   residueAudioLen = SDL_GetQueuedAudioSize(deviceID);
+  //   printf("%10d\n", residueAudioLen);
+  //   if (residueAudioLen <= 0) break;
+  //   SDL_Delay(1);
+  // }
+
+  // while (true) {
+  //   printf("1 <20><>ͣ 2 <20><><EFBFBD><EFBFBD>  3 <20>˳<EFBFBD> \n");
+  //   int flag = 0;
+
+  //   scanf_s("%d", &flag);
+
+  //   if (flag == 1)
+  //     SDL_PauseAudioDevice(deviceID, 1);
+  //   else if (flag == 2)
+  //     SDL_PauseAudioDevice(deviceID, 0);
+  //   else if (flag == 3)
+  //     break;
+  // }
+
+  SDL_CloseAudio();
+  SDL_Quit();
+  fclose(fp);
+
+  return 0;
+}