Home | History | Annotate | Download | only in cpp 
      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
     76