Add a testcase for simple OpenAL playback

1 files changed, 87 insertions, 0 deletions

diff --git a/tests/openal_playback.cpp b/tests/openal_playback.cpp
new file mode 100644
index 00000000..4afa55fb
--- /dev/null
+++ b/tests/openal_playback.cpp
@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <AL/al.h>
+#include <AL/alc.h>
+
+int main() {
+  ALCdevice* device = alcOpenDevice(NULL);
+  ALCcontext* context = alcCreateContext(device, NULL);
+  alcMakeContextCurrent(context);
+
+  ALfloat listenerPos[] = {0.0, 0.0, 0.0};
+  ALfloat listenerVel[] = {0.0, 0.0, 0.0};
+  ALfloat listenerOri[] = {0.0, 0.0, -1.0, 0.0, 1.0, 0.0};
+
+  alListenerfv(AL_POSITION, listenerPos);
+  alListenerfv(AL_VELOCITY, listenerVel);
+  alListenerfv(AL_ORIENTATION, listenerOri);
+
+  ALuint buffers[1];
+
+  alGenBuffers(1, buffers);
+
+  FILE* source = fopen("audio.wav", "rb");
+  fseek(source, 0, SEEK_END);
+  int size = ftell(source);
+  fseek(source, 0, SEEK_SET);
+
+  unsigned char* buffer = (unsigned char*) malloc(size);
+  fread(buffer, size, 1, source);
+
+  unsigned offset = 12; // ignore the RIFF header
+  offset += 8; // ignore the fmt header
+  offset += 2; // ignore the format type
+
+  unsigned channels = buffer[offset + 1] << 8;
+  channels |= buffer[offset];
+  offset += 2;
+  printf("Channels: %u\n", channels);
+
+  unsigned frequency = buffer[offset + 3] << 24;
+  frequency |= buffer[offset + 2] << 16;
+  frequency |= buffer[offset + 1] << 8;
+  frequency |= buffer[offset];
+  offset += 4;
+  printf("Frequency: %u\n", frequency);
+
+  offset += 6; // ignore block size and bps
+
+  unsigned bits = buffer[offset + 1] << 8;
+  bits |= buffer[offset];
+  offset += 2;
+  printf("Bits: %u\n", bits);
+
+  ALenum format = 0;
+  if(bits == 8)
+  {
+    if(channels == 1)
+      format = AL_FORMAT_MONO8;
+    else if(channels == 2)
+      format = AL_FORMAT_STEREO8;
+  }
+  else if(bits == 16)
+  {
+    if(channels == 1)
+      format = AL_FORMAT_MONO16;
+    else if(channels == 2)
+      format = AL_FORMAT_STEREO16;
+  }
+
+  offset += 8; // ignore the data chunk
+
+  printf("Start offset: %d\n", offset);
+
+  alBufferData(buffers[0], format, &buffer[offset], size - offset, frequency);
+
+  ALuint sources[1];
+  alGenSources(1, sources);
+
+  alSourcei(sources[0], AL_BUFFER, buffers[0]);
+
+  alSourcePlay(sources[0]);
+
+  int result = 1;
+  REPORT_RESULT();
+
+  return 0;
+}