Lines Matching refs:frame
25 int AudioFrameOperations::MonoToStereo(AudioFrame* frame) {
26 if (frame->num_channels_ != 1) {
29 if ((frame->samples_per_channel_ * 2) >= AudioFrame::kMaxDataSizeSamples) {
35 memcpy(data_copy, frame->data_,
36 sizeof(int16_t) * frame->samples_per_channel_);
37 MonoToStereo(data_copy, frame->samples_per_channel_, frame->data_);
38 frame->num_channels_ = 2;
51 int AudioFrameOperations::StereoToMono(AudioFrame* frame) {
52 if (frame->num_channels_ != 2) {
56 StereoToMono(frame->data_, frame->samples_per_channel_, frame->data_);
57 frame->num_channels_ = 1;
62 void AudioFrameOperations::SwapStereoChannels(AudioFrame* frame) {
63 if (frame->num_channels_ != 2) return;
65 for (int i = 0; i < frame->samples_per_channel_ * 2; i += 2) {
66 int16_t temp_data = frame->data_[i];
67 frame->data_[i] = frame->data_[i + 1];
68 frame->data_[i + 1] = temp_data;
72 void AudioFrameOperations::Mute(AudioFrame& frame) {
73 memset(frame.data_, 0, sizeof(int16_t) *
74 frame.samples_per_channel_ * frame.num_channels_);
77 int AudioFrameOperations::Scale(float left, float right, AudioFrame& frame) {
78 if (frame.num_channels_ != 2) {
82 for (int i = 0; i < frame.samples_per_channel_; i++) {
83 frame.data_[2 * i] =
84 static_cast<int16_t>(left * frame.data_[2 * i]);
85 frame.data_[2 * i + 1] =
86 static_cast<int16_t>(right * frame.data_[2 * i + 1]);
91 int AudioFrameOperations::ScaleWithSat(float scale, AudioFrame& frame) {
95 for (int i = 0; i < frame.samples_per_channel_ * frame.num_channels_;
97 temp_data = static_cast<int32_t>(scale * frame.data_[i]);
99 frame.data_[i] = -32768;
101 frame.data_[i] = 32767;
103 frame.data_[i] = static_cast<int16_t>(temp_data);