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| author | crogers@google.com <crogers@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-01-15 00:18:39 +0000 |
|---|---|---|
| committer | crogers@google.com <crogers@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-01-15 00:18:39 +0000 |
| commit | ec8962ca7de01eb5685b32a4361dd7be8f7e6293 (patch) | |
| tree | f26945b2e47fb967427b831ec3d4b1b962be3964 /media/audio/audio_util.cc | |
| parent | 521b248f7ce021f99932c9150461744b3edf3067 (diff) | |
| download | chromium_src-ec8962ca7de01eb5685b32a4361dd7be8f7e6293.zip chromium_src-ec8962ca7de01eb5685b32a4361dd7be8f7e6293.tar.gz chromium_src-ec8962ca7de01eb5685b32a4361dd7be8f7e6293.tar.bz2 | |
Implement renderer AudioDevice API for low-latency audio output
BUG=none
TEST=none
(I tested locally for Mac OS X, but we'll need further testing for Windows and Linux as we add real-time threads, etc.)
Review URL: http://codereview.chromium.org/6002005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71521 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'media/audio/audio_util.cc')
| -rw-r--r-- | media/audio/audio_util.cc | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/media/audio/audio_util.cc b/media/audio/audio_util.cc index 6d80c87..ed84bc1 100644 --- a/media/audio/audio_util.cc +++ b/media/audio/audio_util.cc @@ -206,4 +206,23 @@ bool DeinterleaveAudioChannel(void* source, return false; } +void InterleaveFloatToInt16(const std::vector<float*>& source, + int16* destination, + size_t number_of_frames) { + const float kScale = 32768.0f; + int channels = source.size(); + for (int i = 0; i < channels; ++i) { + float* channel_data = source[i]; + for (size_t j = 0; j < number_of_frames; ++j) { + float sample = kScale * channel_data[j]; + if (sample < -32768.0) + sample = -32768.0; + else if (sample > 32767.0) + sample = 32767.0; + + destination[j * channels + i] = static_cast<int16>(sample); + } + } +} + } // namespace media |