ppapi/proxy/audio_buffer_resource.cc

   1 // Copyright 2014 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/proxy/audio_buffer_resource.h"
   6
   7 #include "base/logging.h"
   8 #include "ppapi/c/pp_bool.h"
   9 #include "ppapi/shared_impl/media_stream_buffer.h"
  10 #include "ppapi/shared_impl/var.h"
  11
  12 namespace ppapi {
  13 namespace proxy {
  14
  15 AudioBufferResource::AudioBufferResource(PP_Instance instance,
  16                                        int32_t index,
  17                                        MediaStreamBuffer* buffer)
  18     : Resource(OBJECT_IS_PROXY, instance),
  19       index_(index),
  20       buffer_(buffer) {
  21   DCHECK_EQ(buffer_->header.type, MediaStreamBuffer::TYPE_AUDIO);
  22 }
  23
  24 AudioBufferResource::~AudioBufferResource() {
  25   CHECK(!buffer_) << "An unused (or unrecycled) buffer is destroyed.";
  26 }
  27
  28 thunk::PPB_AudioBuffer_API* AudioBufferResource::AsPPB_AudioBuffer_API() {
  29   return this;
  30 }
  31
  32 PP_TimeDelta AudioBufferResource::GetTimestamp() {
  33   if (!buffer_) {
  34     VLOG(1) << "Buffer is invalid";
  35     return 0.0;
  36   }
  37   return buffer_->audio.timestamp;
  38 }
  39
  40 void AudioBufferResource::SetTimestamp(PP_TimeDelta timestamp) {
  41   if (!buffer_) {
  42     VLOG(1) << "Buffer is invalid";
  43     return;
  44   }
  45   buffer_->audio.timestamp = timestamp;
  46 }
  47
  48 PP_AudioBuffer_SampleRate AudioBufferResource::GetSampleRate() {
  49   if (!buffer_) {
  50     VLOG(1) << "Buffer is invalid";
  51     return PP_AUDIOBUFFER_SAMPLERATE_UNKNOWN;
  52   }
  53   return buffer_->audio.sample_rate;
  54 }
  55
  56 PP_AudioBuffer_SampleSize AudioBufferResource::GetSampleSize() {
  57   if (!buffer_) {
  58     VLOG(1) << "Buffer is invalid";
  59     return PP_AUDIOBUFFER_SAMPLESIZE_UNKNOWN;
  60   }
  61   return PP_AUDIOBUFFER_SAMPLESIZE_16_BITS;
  62 }
  63
  64 uint32_t AudioBufferResource::GetNumberOfChannels() {
  65   if (!buffer_) {
  66     VLOG(1) << "Buffer is invalid";
  67     return 0;
  68   }
  69   return buffer_->audio.number_of_channels;
  70 }
  71
  72 uint32_t AudioBufferResource::GetNumberOfSamples() {
  73   if (!buffer_) {
  74     VLOG(1) << "Buffer is invalid";
  75     return 0;
  76   }
  77   return buffer_->audio.number_of_samples;
  78 }
  79
  80 void* AudioBufferResource::GetDataBuffer() {
  81   if (!buffer_) {
  82     VLOG(1) << "Buffer is invalid";
  83     return NULL;
  84   }
  85   return buffer_->audio.data;
  86 }
  87
  88 uint32_t AudioBufferResource::GetDataBufferSize() {
  89   if (!buffer_) {
  90     VLOG(1) << "Buffer is invalid";
  91     return 0;
  92   }
  93   return buffer_->audio.data_size;
  94 }
  95
  96 MediaStreamBuffer* AudioBufferResource::GetBuffer() {
  97   return buffer_;
  98 }
  99
 100 int32_t AudioBufferResource::GetBufferIndex() {
 101   return index_;
 102 }
 103
 104 void AudioBufferResource::Invalidate() {
 105   DCHECK(buffer_);
 106   DCHECK_GE(index_, 0);
 107   buffer_ = NULL;
 108   index_ = -1;
 109 }
 110
 111 }  // namespace proxy
 112 }  // namespace ppapi