本文整理汇总了C++中AudioChunk::ChannelCount方法的典型用法代码示例。如果您正苦于以下问题：C++ AudioChunk::ChannelCount方法的具体用法？C++ AudioChunk::ChannelCount怎么用？C++ AudioChunk::ChannelCount使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AudioChunk的用法示例。
在下文中一共展示了AudioChunk::ChannelCount方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: AudioBuffer
/* static */ already_AddRefed<AudioBuffer>
AudioBuffer::Create(nsPIDOMWindowInner* aWindow, float aSampleRate,
AudioChunk&& aInitialContents)
{
AudioChunk initialContents = aInitialContents;
ErrorResult rv;
RefPtr<AudioBuffer> buffer =
new AudioBuffer(aWindow, initialContents.ChannelCount(),
initialContents.mDuration, aSampleRate, rv);
if (rv.Failed()) {
return nullptr;
}
buffer->mSharedChannels = Move(aInitialContents);
return buffer.forget();
}示例2: PodZero
/**
* Copies the data in aInput to aOffsetInBlock within aBlock.
* aBlock must have been allocated with AllocateInputBlock and have a channel
* count that's a superset of the channels in aInput.
*/
static void
CopyChunkToBlock(const AudioChunk& aInput, AudioChunk *aBlock,
uint32_t aOffsetInBlock)
{
uint32_t blockChannels = aBlock->ChannelCount();
nsAutoTArray<const void*,2> channels;
if (aInput.IsNull()) {
channels.SetLength(blockChannels);
PodZero(channels.Elements(), blockChannels);
} else {
channels.SetLength(aInput.ChannelCount());
PodCopy(channels.Elements(), aInput.mChannelData.Elements(), channels.Length());
if (channels.Length() != blockChannels) {
// We only need to upmix here because aBlock's channel count has been
// chosen to be a superset of the channel count of every chunk.
AudioChannelsUpMix(&channels, blockChannels, nullptr);
}
}
uint32_t duration = aInput.GetDuration();
for (uint32_t c = 0; c < blockChannels; ++c) {
float* outputData =
static_cast<float*>(const_cast<void*>(aBlock->mChannelData[c])) + aOffsetInBlock;
if (channels[c]) {
switch (aInput.mBufferFormat) {
case AUDIO_FORMAT_FLOAT32:
ConvertAudioSamplesWithScale(
static_cast<const float*>(channels[c]), outputData, duration,
aInput.mVolume);
break;
case AUDIO_FORMAT_S16:
ConvertAudioSamplesWithScale(
static_cast<const int16_t*>(channels[c]), outputData, duration,
aInput.mVolume);
break;
default:
NS_ERROR("Unhandled format");
}
} else {
PodZero(outputData, duration);
}
}
}