ppapi/tests/test_audio.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PAPPI_TESTS_TEST_AUDIO_H_
   6 #define PAPPI_TESTS_TEST_AUDIO_H_
   7
   8 #include <string>
   9
  10 #include "ppapi/c/ppb_audio.h"
  11 #include "ppapi/c/ppb_audio_config.h"
  12 #include "ppapi/c/ppb_core.h"
  13 #include "ppapi/tests/test_case.h"
  14
  15 class TestAudio : public TestCase {
  16  public:
  17   explicit TestAudio(TestingInstance* instance);
  18   ~TestAudio();
  19
  20   // TestCase implementation.
  21   virtual bool Init();
  22   virtual void RunTests(const std::string& filter);
  23
  24  private:
  25   std::string TestCreation();
  26   std::string TestDestroyNoStop();
  27   std::string TestFailures();
  28   std::string TestAudioCallback1();
  29   std::string TestAudioCallback2();
  30   std::string TestAudioCallback3();
  31   std::string TestAudioCallback4();
  32
  33   // Calls |audio_callback_method_| (where |user_data| is "this").
  34   static void AudioCallbackTrampoline(void* sample_buffer,
  35                                       uint32_t buffer_size_in_bytes,
  36                                       PP_TimeDelta latency,
  37                                       void* user_data);
  38   static void AudioCallbackTrampoline1_0(void* sample_buffer,
  39                                          uint32_t buffer_size_in_bytes,
  40                                          void* user_data);
  41
  42   typedef void (TestAudio::*AudioCallbackMethod)(void* sample_buffer,
  43                                                  uint32_t buffer_size_in_bytes,
  44                                                  PP_TimeDelta latency);
  45
  46   // Method called by |AudioCallbackTrampoline()|. Set only when the callback
  47   // can't be running (before |StartPlayback()|, after |StopPlayback()| or
  48   // releasing the last reference to the audio resource).
  49   AudioCallbackMethod audio_callback_method_;
  50
  51   // An |AudioCallbackMethod| that just clears |sample_buffer|.
  52   void AudioCallbackTrivial(void* sample_buffer,
  53                             uint32_t buffer_size_in_bytes,
  54                             PP_TimeDelta latency);
  55
  56   // |AudioCallbackMethod| used by |TestAudioCallbackN()|.
  57   void AudioCallbackTest(void* sample_buffer,
  58                          uint32_t buffer_size_in_bytes,
  59                          PP_TimeDelta latency);
  60
  61   PP_Resource CreateAudioConfig(PP_AudioSampleRate sample_rate,
  62                                 uint32_t requested_sample_frame_count);
  63
  64   // Used by |TestAudioCallbackN()|.
  65   NestedEvent audio_callback_event_;
  66
  67   bool test_done_;
  68
  69   // Raw C-level interfaces, set in |Init()|; do not modify them elsewhere.
  70   const PPB_Audio_1_1* audio_interface_;
  71   const PPB_Audio_1_0* audio_interface_1_0_;
  72   const PPB_AudioConfig* audio_config_interface_;
  73   const PPB_Core* core_interface_;
  74 };
  75
  76 #endif  // PAPPI_TESTS_TEST_AUDIO_H_