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red: remove special-casing of no-redundancy

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removes the special-casing of not sending a RED header when there is no redundant payload.
This avoids switching back and forth between the primary and the red payload format (primarily at the start of the connection).

BUG=webrtc:11640

Change-Id: I8e0044bef1ed7c4168d9527645522392db2ed068
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/220932
Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Commit-Queue: Henrik Lundin <henrik.lundin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34703}
This commit is contained in:
Philipp Hancke
2021-05-31 21:07:45 +02:00
committed by WebRTC LUCI CQ
parent 43f25e36f7
commit 320c57b7c6
2 changed files with 12 additions and 18 deletions
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19
modules/audio_coding/codecs/red/audio_encoder_copy_red.cc
View File

@ -122,12 +122,7 @@ AudioEncoder::EncodedInfo AudioEncoderCopyRed::EncodeImpl(
header_length_bytes += kRedHeaderLength;
}
// Allocate room for RFC 2198 header if there is redundant data.
// Otherwise this will send the primary payload type without
// wrapping in RED.
if (header_length_bytes == kRedLastHeaderLength) {
header_length_bytes = 0;
}
// Allocate room for RFC 2198 header.
encoded->SetSize(header_length_bytes);
// Iterate backwards and append the data.
@ -148,17 +143,15 @@ AudioEncoder::EncodedInfo AudioEncoderCopyRed::EncodeImpl(
// `info` will be implicitly cast to an EncodedInfoLeaf struct, effectively
// discarding the (empty) vector of redundant information. This is
// intentional.
if (header_length_bytes > 0) {
if (header_length_bytes > kRedHeaderLength) {
info.redundant.push_back(info);
RTC_DCHECK_EQ(info.speech,
info.redundant[info.redundant.size() - 1].speech);
}
encoded->AppendData(primary_encoded_);
if (header_length_bytes > 0) {
RTC_DCHECK_EQ(header_offset, header_length_bytes - 1);
encoded->data()[header_offset] = info.payload_type;
}
RTC_DCHECK_EQ(header_offset, header_length_bytes - 1);
encoded->data()[header_offset] = info.payload_type;
// Shift the redundant encodings.
auto rit = redundant_encodings_.rbegin();
@ -172,9 +165,7 @@ AudioEncoder::EncodedInfo AudioEncoderCopyRed::EncodeImpl(
it->second.SetData(primary_encoded_);
// Update main EncodedInfo.
if (header_length_bytes > 0) {
info.payload_type = red_payload_type_;
}
info.payload_type = red_payload_type_;
info.encoded_bytes = encoded->size();
return info;
}

11
modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc
View File

@ -34,6 +34,8 @@ namespace webrtc {
namespace {
static const size_t kMaxNumSamples = 48 * 10 * 2; // 10 ms @ 48 kHz stereo.
static const size_t kRedLastHeaderLength =
1; // 1 byte RED header for the last element.
}
class AudioEncoderCopyRedTest : public ::testing::Test {
@ -154,7 +156,7 @@ TEST_F(AudioEncoderCopyRedTest, CheckNoOutput) {
// First call is a special case, since it does not include a secondary
// payload.
EXPECT_EQ(0u, encoded_info_.redundant.size());
EXPECT_EQ(kEncodedSize, encoded_info_.encoded_bytes);
EXPECT_EQ(kEncodedSize + kRedLastHeaderLength, encoded_info_.encoded_bytes);
// Next call to the speech encoder will not produce any output.
Encode();
@ -217,7 +219,7 @@ TEST_F(AudioEncoderCopyRedTest, CheckPayloadSizes) {
// payload.
Encode();
EXPECT_EQ(0u, encoded_info_.redundant.size());
EXPECT_EQ(1u, encoded_info_.encoded_bytes);
EXPECT_EQ(kRedLastHeaderLength + 1u, encoded_info_.encoded_bytes);
// Second call is also special since it does not include a tertiary
// payload.
@ -329,9 +331,10 @@ TEST_F(AudioEncoderCopyRedTest, CheckPayloads) {
// First call is a special case, since it does not include a secondary
// payload.
Encode();
EXPECT_EQ(kPayloadLenBytes, encoded_info_.encoded_bytes);
EXPECT_EQ(kRedLastHeaderLength + kPayloadLenBytes,
encoded_info_.encoded_bytes);
for (size_t i = 0; i < kPayloadLenBytes; ++i) {
EXPECT_EQ(i, encoded_.data()[i]);
EXPECT_EQ(i, encoded_.data()[kRedLastHeaderLength + i]);
}
for (int j = 0; j < 1; ++j) {