ppapi/cpp/audio_config.cc

   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 #include "ppapi/cpp/audio_config.h"
   6
   7 #include "ppapi/cpp/instance_handle.h"
   8 #include "ppapi/cpp/module.h"
   9 #include "ppapi/cpp/module_impl.h"
  10
  11 namespace pp {
  12
  13 namespace {
  14
  15 template <> const char* interface_name<PPB_AudioConfig_1_1>() {
  16   return PPB_AUDIO_CONFIG_INTERFACE_1_1;
  17 }
  18
  19 template <> const char* interface_name<PPB_AudioConfig_1_0>() {
  20   return PPB_AUDIO_CONFIG_INTERFACE_1_0;
  21 }
  22
  23 }  // namespace
  24
  25 AudioConfig::AudioConfig()
  26     : sample_rate_(PP_AUDIOSAMPLERATE_NONE),
  27       sample_frame_count_(0) {
  28 }
  29
  30 AudioConfig::AudioConfig(const InstanceHandle& instance,
  31                          PP_AudioSampleRate sample_rate,
  32                          uint32_t sample_frame_count)
  33     : sample_rate_(sample_rate),
  34       sample_frame_count_(sample_frame_count) {
  35   if (has_interface<PPB_AudioConfig_1_1>()) {
  36     PassRefFromConstructor(
  37         get_interface<PPB_AudioConfig_1_1>()->CreateStereo16Bit(
  38         instance.pp_instance(), sample_rate, sample_frame_count));
  39   } else if (has_interface<PPB_AudioConfig_1_0>()) {
  40     PassRefFromConstructor(
  41         get_interface<PPB_AudioConfig_1_0>()->CreateStereo16Bit(
  42         instance.pp_instance(), sample_rate, sample_frame_count));
  43   }
  44 }
  45
  46 // static
  47 PP_AudioSampleRate AudioConfig::RecommendSampleRate(
  48     const InstanceHandle& instance) {
  49   if (has_interface<PPB_AudioConfig_1_1>()) {
  50     return get_interface<PPB_AudioConfig_1_1>()->
  51         RecommendSampleRate(instance.pp_instance());
  52   }
  53   return PP_AUDIOSAMPLERATE_NONE;
  54 }
  55
  56 // static
  57 uint32_t AudioConfig::RecommendSampleFrameCount(
  58     const InstanceHandle& instance,
  59     PP_AudioSampleRate sample_rate,
  60     uint32_t requested_sample_frame_count) {
  61   if (has_interface<PPB_AudioConfig_1_1>()) {
  62     return get_interface<PPB_AudioConfig_1_1>()->
  63         RecommendSampleFrameCount(instance.pp_instance(),
  64                                   sample_rate,
  65                                   requested_sample_frame_count);
  66   }
  67   if (has_interface<PPB_AudioConfig_1_0>()) {
  68     return get_interface<PPB_AudioConfig_1_0>()->
  69         RecommendSampleFrameCount(sample_rate,
  70                                   requested_sample_frame_count);
  71   }
  72   return 0;
  73 }
  74
  75 }  // namespace pp