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Let NetEq use the PLC output from a decoder

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This change enables NetEq to use the packet concealment audio (aka
PLC) produced by a decoder. The change also includes a new API to the
AudioDecoder interface, which lets the decoder implementation generate
and deliver concealment audio.

Bug: webrtc:9180
Change-Id: Icaacebccf645d4694b0d2d6310f6f2c7132881c4
Reviewed-on: https://webrtc-review.googlesource.com/96340
Commit-Queue: Henrik Lundin <henrik.lundin@webrtc.org>
Reviewed-by: Minyue Li <minyue@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24738}
This commit is contained in:
Henrik Lundin
2018-09-05 18:14:52 +02:00
committed by Commit Bot
parent e899629be4
commit 00eb12a20c
18 changed files with 372 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
modules/audio_coding/neteq/accelerate.cc
View File

@ -25,7 +25,8 @@ Accelerate::ReturnCodes Accelerate::Process(const int16_t* input,
input_length / num_channels_ < (2 * k15ms - 1) * fs_mult_) {
// Length of input data too short to do accelerate. Simply move all data
// from input to output.
output->PushBackInterleaved(input, input_length);
output->PushBackInterleaved(
rtc::ArrayView<const int16_t>(input, input_length));
return kError;
}
return TimeStretch::Process(input, input_length, fast_accelerate, output,
@ -67,17 +68,18 @@ Accelerate::ReturnCodes Accelerate::CheckCriteriaAndStretch(
assert(fs_mult_120 >= peak_index); // Should be handled in Process().
// Copy first part; 0 to 15 ms.
output->PushBackInterleaved(input, fs_mult_120 * num_channels_);
output->PushBackInterleaved(
rtc::ArrayView<const int16_t>(input, fs_mult_120 * num_channels_));
// Copy the |peak_index| starting at 15 ms to |temp_vector|.
AudioMultiVector temp_vector(num_channels_);
temp_vector.PushBackInterleaved(&input[fs_mult_120 * num_channels_],
peak_index * num_channels_);
temp_vector.PushBackInterleaved(rtc::ArrayView<const int16_t>(
&input[fs_mult_120 * num_channels_], peak_index * num_channels_));
// Cross-fade |temp_vector| onto the end of |output|.
output->CrossFade(temp_vector, peak_index);
// Copy the last unmodified part, 15 ms + pitch period until the end.
output->PushBackInterleaved(
output->PushBackInterleaved(rtc::ArrayView<const int16_t>(
&input[(fs_mult_120 + peak_index) * num_channels_],
input_length - (fs_mult_120 + peak_index) * num_channels_);
input_length - (fs_mult_120 + peak_index) * num_channels_));
if (active_speech) {
return kSuccess;
@ -86,7 +88,8 @@ Accelerate::ReturnCodes Accelerate::CheckCriteriaAndStretch(
}
} else {
// Accelerate not allowed. Simply move all data from decoded to outData.
output->PushBackInterleaved(input, input_length);
output->PushBackInterleaved(
rtc::ArrayView<const int16_t>(input, input_length));
return kNoStretch;
}
}