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Defining API result types on VoIP API

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Bug: webrtc:12193
Change-Id: I6f5ffd82cc838e6982257781f225f9d8159e6b82
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/193720
Commit-Queue: Tim Na <natim@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32656}
This commit is contained in:
Tim Na 2020-11-20 09:34:47 -08:00 committed by Commit Bot
parent a65d78517a
commit b223cb60e9
11 changed files with 350 additions and 247 deletions
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69
api/voip/voip_base.h
View file

@ -35,6 +35,21 @@ class Transport;
enum class ChannelId : int {};
enum class VoipResult {
// kOk indicates the function was successfully invoked with no error.
kOk,
// kInvalidArgument indicates the caller specified an invalid argument, such
// as an invalid ChannelId.
kInvalidArgument,
// kFailedPrecondition indicates that the operation was failed due to not
// satisfying prerequisite such as not setting codec type before sending.
kFailedPrecondition,
// kInternal is used to indicate various internal failures that are not the
// caller's fault. Further detail is commented on each function that uses this
// return value.
kInternal,
};
class VoipBase {
public:
// Creates a channel.
@ -46,40 +61,48 @@ class VoipBase {
// and injection for incoming RTP from remote endpoint is handled via
// VoipNetwork interface. |local_ssrc| is optional and when local_ssrc is not
// set, some random value will be used by voip engine.
// Returns value is optional as to indicate the failure to create channel.
virtual absl::optional<ChannelId> CreateChannel(
Transport* transport,
absl::optional<uint32_t> local_ssrc) = 0;
// Returns a ChannelId created for caller to handle subsequent Channel
// operations.
virtual ChannelId CreateChannel(Transport* transport,
absl::optional<uint32_t> local_ssrc) = 0;
// Releases |channel_id| that no longer has any use.
virtual void ReleaseChannel(ChannelId channel_id) = 0;
// Returns following VoipResult;
// kOk - |channel_id| is released.
// kInvalidArgument - |channel_id| is invalid.
// kInternal - Fails to stop audio output device.
virtual VoipResult ReleaseChannel(ChannelId channel_id) = 0;
// Starts sending on |channel_id|. This will start microphone if not started
// yet. Returns false if initialization has failed on selected microphone
// device. API is subject to expand to reflect error condition to application
// later.
virtual bool StartSend(ChannelId channel_id) = 0;
// Starts sending on |channel_id|. This starts microphone if not started yet.
// Returns following VoipResult;
// kOk - Channel successfully started to send.
// kInvalidArgument - |channel_id| is invalid.
// kFailedPrecondition - Missing prerequisite on VoipCodec::SetSendCodec.
// kInternal - initialization has failed on selected microphone.
virtual VoipResult StartSend(ChannelId channel_id) = 0;
// Stops sending on |channel_id|. If this is the last active channel, it will
// stop microphone input from underlying audio platform layer.
// Returns false if termination logic has failed on selected microphone
// device. API is subject to expand to reflect error condition to application
// later.
virtual bool StopSend(ChannelId channel_id) = 0;
// Returns following VoipResult;
// kOk - Channel successfully stopped to send.
// kInvalidArgument - |channel_id| is invalid.
// kInternal - Failed to stop the active microphone device.
virtual VoipResult StopSend(ChannelId channel_id) = 0;
// Starts playing on speaker device for |channel_id|.
// This will start underlying platform speaker device if not started.
// Returns false if initialization has failed
// on selected speaker device. API is subject to expand to reflect error
// condition to application later.
virtual bool StartPlayout(ChannelId channel_id) = 0;
// Returns following VoipResult;
// kOk - Channel successfully started to play out.
// kInvalidArgument - |channel_id| is invalid.
// kFailedPrecondition - Missing prerequisite on VoipCodec::SetReceiveCodecs.
// kInternal - Failed to initializate the selected speaker device.
virtual VoipResult StartPlayout(ChannelId channel_id) = 0;
// Stops playing on speaker device for |channel_id|.
// If this is the last active channel playing, then it will stop speaker
// from the platform layer.
// Returns false if termination logic has failed on selected speaker device.
// API is subject to expand to reflect error condition to application later.
virtual bool StopPlayout(ChannelId channel_id) = 0;
// Returns following VoipResult;
// kOk - Channel successfully stopped t play out.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult StopPlayout(ChannelId channel_id) = 0;
protected:
virtual ~VoipBase() = default;

14
api/voip/voip_codec.h
View file

@ -29,15 +29,21 @@ namespace webrtc {
class VoipCodec {
public:
// Set encoder type here along with its payload type to use.
virtual void SetSendCodec(ChannelId channel_id,
int payload_type,
const SdpAudioFormat& encoder_spec) = 0;
// Returns following VoipResult;
// kOk - sending codec is set as provided.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult SetSendCodec(ChannelId channel_id,
int payload_type,
const SdpAudioFormat& encoder_spec) = 0;
// Set decoder payload type here. In typical offer and answer model,
// this should be called after payload type has been agreed in media
// session. Note that payload type can differ with same codec in each
// direction.
virtual void SetReceiveCodecs(
// Returns following VoipResult;
// kOk - receiving codecs are set as provided.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult SetReceiveCodecs(
ChannelId channel_id,
const std::map<int, SdpAudioFormat>& decoder_specs) = 0;

21
api/voip/voip_dtmf.h
View file

@ -43,9 +43,12 @@ class VoipDtmf {
// Register the payload type and sample rate for DTMF (RFC 4733) payload.
// Must be called exactly once prior to calling SendDtmfEvent after payload
// type has been negotiated with remote.
virtual void RegisterTelephoneEventType(ChannelId channel_id,
int rtp_payload_type,
int sample_rate_hz) = 0;
// Returns following VoipResult;
// kOk - telephone event type is registered as provided.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult RegisterTelephoneEventType(ChannelId channel_id,
int rtp_payload_type,
int sample_rate_hz) = 0;
// Send DTMF named event as specified by
// https://tools.ietf.org/html/rfc4733#section-3.2
@ -53,10 +56,14 @@ class VoipDtmf {
// in place of real RTP packets instead.
// Must be called after RegisterTelephoneEventType and VoipBase::StartSend
// have been called.
// Returns true if the requested DTMF event is successfully scheduled.
virtual bool SendDtmfEvent(ChannelId channel_id,
DtmfEvent dtmf_event,
int duration_ms) = 0;
// Returns following VoipResult;
// kOk - requested DTMF event is successfully scheduled.
// kInvalidArgument - |channel_id| is invalid.
// kFailedPrecondition - Missing prerequisite on RegisterTelephoneEventType
// or sending state.
virtual VoipResult SendDtmfEvent(ChannelId channel_id,
DtmfEvent dtmf_event,
int duration_ms) = 0;
protected:
virtual ~VoipDtmf() = default;

31
api/voip/voip_engine.h
View file

@ -23,7 +23,7 @@ class VoipVolumeControl;
// VoipEngine is the main interface serving as the entry point for all VoIP
// APIs. A single instance of VoipEngine should suffice the most of the need for
// typical VoIP applications as it handles multiple media sessions including a
// specialized session type like ad-hoc mesh conferencing. Below example code
// specialized session type like ad-hoc conference. Below example code
// describes the typical sequence of API usage. Each API header contains more
// description on what the methods are used for.
//
@ -38,36 +38,35 @@ class VoipVolumeControl;
// config.audio_processing = AudioProcessingBuilder().Create();
//
// auto voip_engine = CreateVoipEngine(std::move(config));
// if (!voip_engine) return some_failure;
//
// auto& voip_base = voip_engine->Base();
// auto& voip_codec = voip_engine->Codec();
// auto& voip_network = voip_engine->Network();
//
// absl::optional<ChannelId> channel =
// voip_base.CreateChannel(&app_transport_);
// if (!channel) return some_failure;
// ChannelId channel = voip_base.CreateChannel(&app_transport_);
//
// // After SDP offer/answer, set payload type and codecs that have been
// // decided through SDP negotiation.
// voip_codec.SetSendCodec(*channel, ...);
// voip_codec.SetReceiveCodecs(*channel, ...);
// // VoipResult handling omitted here.
// voip_codec.SetSendCodec(channel, ...);
// voip_codec.SetReceiveCodecs(channel, ...);
//
// // Start sending and playing RTP on voip channel.
// voip_base.StartSend(*channel);
// voip_base.StartPlayout(*channel);
// // VoipResult handling omitted here.
// voip_base.StartSend(channel);
// voip_base.StartPlayout(channel);
//
// // Inject received RTP/RTCP through VoipNetwork interface.
// voip_network.ReceivedRTPPacket(*channel, ...);
// voip_network.ReceivedRTCPPacket(*channel, ...);
// // VoipResult handling omitted here.
// voip_network.ReceivedRTPPacket(channel, ...);
// voip_network.ReceivedRTCPPacket(channel, ...);
//
// // Stop and release voip channel.
// voip_base.StopSend(*channel);
// voip_base.StopPlayout(*channel);
// voip_base.ReleaseChannel(*channel);
// // VoipResult handling omitted here.
// voip_base.StopSend(channel);
// voip_base.StopPlayout(channel);
// voip_base.ReleaseChannel(channel);
//
// Current VoipEngine defines three sub-API classes and is subject to expand in
// near future.
class VoipEngine {
public:
virtual ~VoipEngine() = default;

20
api/voip/voip_network.h
View file

@ -18,20 +18,22 @@ namespace webrtc {
// VoipNetwork interface provides any network related interfaces such as
// processing received RTP/RTCP packet from remote endpoint. This interface
// requires a ChannelId created via VoipBase interface. Note that using invalid
// (previously released) ChannelId will silently fail these API calls as it
// would have released underlying audio components. It's anticipated that caller
// may be using different thread for network I/O where released channel id is
// still used to input incoming RTP packets in which case we should silently
// ignore. The interface is subjected to expand as needed in near future.
// requires a ChannelId created via VoipBase interface.
class VoipNetwork {
public:
// The data received from the network including RTP header is passed here.
virtual void ReceivedRTPPacket(ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtp_packet) = 0;
// Returns following VoipResult;
// kOk - received RTP packet is processed.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult ReceivedRTPPacket(
ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtp_packet) = 0;
// The data received from the network including RTCP header is passed here.
virtual void ReceivedRTCPPacket(
// Returns following VoipResult;
// kOk - received RTCP packet is processed.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult ReceivedRTCPPacket(
ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtcp_packet) = 0;

10
api/voip/voip_statistics.h
View file

@ -30,10 +30,12 @@ struct IngressStatistics {
// the jitter buffer (NetEq) performance.
class VoipStatistics {
public:
// Gets the audio ingress statistics. Returns absl::nullopt when channel_id is
// invalid.
virtual absl::optional<IngressStatistics> GetIngressStatistics(
ChannelId channel_id) = 0;
// Gets the audio ingress statistics by |ingress_stats| reference.
// Returns following VoipResult;
// kOk - successfully set provided IngressStatistics reference.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult GetIngressStatistics(ChannelId channel_id,
IngressStatistics& ingress_stats) = 0;
protected:
virtual ~VoipStatistics() = default;

25
api/voip/voip_volume_control.h
View file

@ -36,17 +36,24 @@ class VoipVolumeControl {
// Mute/unmutes the microphone input sample before encoding process. Note that
// mute doesn't affect audio input level and energy values as input sample is
// silenced after the measurement.
virtual void SetInputMuted(ChannelId channel_id, bool enable) = 0;
// Returns following VoipResult;
// kOk - input source muted or unmuted as provided by |enable|.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult SetInputMuted(ChannelId channel_id, bool enable) = 0;
// Gets the microphone volume info.
// Returns absl::nullopt if |channel_id| is invalid.
virtual absl::optional<VolumeInfo> GetInputVolumeInfo(
ChannelId channel_id) = 0;
// Gets the microphone volume info via |volume_info| reference.
// Returns following VoipResult;
// kOk - successfully set provided input volume info.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult GetInputVolumeInfo(ChannelId channel_id,
VolumeInfo& volume_info) = 0;
// Gets the speaker volume info.
// Returns absl::nullopt if |channel_id| is invalid.
virtual absl::optional<VolumeInfo> GetOutputVolumeInfo(
ChannelId channel_id) = 0;
// Gets the speaker volume info via |volume_info| reference.
// Returns following VoipResult;
// kOk - successfully set provided output volume info.
// kInvalidArgument - |channel_id| is invalid.
virtual VoipResult GetOutputVolumeInfo(ChannelId channel_id,
VolumeInfo& volume_info) = 0;
protected:
virtual ~VoipVolumeControl() = default;

106
audio/voip/test/voip_core_unittest.cc
View file

@ -69,19 +69,19 @@ TEST_F(VoipCoreTest, BasicVoipCoreOperation) {
EXPECT_CALL(*audio_device_, StartPlayout()).WillOnce(Return(0));
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_TRUE(channel);
voip_core_->SetSendCodec(*channel, kPcmuPayload, kPcmuFormat);
voip_core_->SetReceiveCodecs(*channel, {{kPcmuPayload, kPcmuFormat}});
voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat);
voip_core_->SetReceiveCodecs(channel, {{kPcmuPayload, kPcmuFormat}});
EXPECT_TRUE(voip_core_->StartSend(*channel));
EXPECT_TRUE(voip_core_->StartPlayout(*channel));
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->StartPlayout(channel), VoipResult::kOk);
voip_core_->RegisterTelephoneEventType(*channel, kPcmuPayload,
voip_core_->RegisterTelephoneEventType(channel, kPcmuPayload,
kPcmuSampleRateHz);
EXPECT_TRUE(voip_core_->SendDtmfEvent(*channel, kDtmfEventCode,
kDtmfEventDurationMs));
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kOk);
// Program mock as operational that is ready to be stopped.
EXPECT_CALL(*audio_device_, Recording()).WillOnce(Return(true));
@ -89,30 +89,32 @@ TEST_F(VoipCoreTest, BasicVoipCoreOperation) {
EXPECT_CALL(*audio_device_, StopRecording()).WillOnce(Return(0));
EXPECT_CALL(*audio_device_, StopPlayout()).WillOnce(Return(0));
EXPECT_TRUE(voip_core_->StopSend(*channel));
EXPECT_TRUE(voip_core_->StopPlayout(*channel));
voip_core_->ReleaseChannel(*channel);
EXPECT_EQ(voip_core_->StopSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->StopPlayout(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, ExpectFailToUseReleasedChannelId) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_TRUE(channel);
// Release right after creation.
voip_core_->ReleaseChannel(*channel);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
// Now use released channel.
// These should be no-op.
voip_core_->SetSendCodec(*channel, kPcmuPayload, kPcmuFormat);
voip_core_->SetReceiveCodecs(*channel, {{kPcmuPayload, kPcmuFormat}});
voip_core_->RegisterTelephoneEventType(*channel, kPcmuPayload,
kPcmuSampleRateHz);
EXPECT_FALSE(voip_core_->StartSend(*channel));
EXPECT_FALSE(voip_core_->StartPlayout(*channel));
EXPECT_FALSE(voip_core_->SendDtmfEvent(*channel, kDtmfEventCode,
kDtmfEventDurationMs));
EXPECT_EQ(voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat),
VoipResult::kInvalidArgument);
EXPECT_EQ(
voip_core_->SetReceiveCodecs(channel, {{kPcmuPayload, kPcmuFormat}}),
VoipResult::kInvalidArgument);
EXPECT_EQ(voip_core_->RegisterTelephoneEventType(channel, kPcmuPayload,
kPcmuSampleRateHz),
VoipResult::kInvalidArgument);
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kInvalidArgument);
EXPECT_EQ(voip_core_->StartPlayout(channel), VoipResult::kInvalidArgument);
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kInvalidArgument);
}
TEST_F(VoipCoreTest, SendDtmfEventWithoutRegistering) {
@ -122,64 +124,65 @@ TEST_F(VoipCoreTest, SendDtmfEventWithoutRegistering) {
EXPECT_CALL(*audio_device_, StartRecording()).WillOnce(Return(0));
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_TRUE(channel);
voip_core_->SetSendCodec(*channel, kPcmuPayload, kPcmuFormat);
voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat);
EXPECT_TRUE(voip_core_->StartSend(*channel));
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kOk);
// Send Dtmf event without registering beforehand, thus payload
// type is not set and false is expected.
EXPECT_FALSE(voip_core_->SendDtmfEvent(*channel, kDtmfEventCode,
kDtmfEventDurationMs));
// type is not set and kFailedPrecondition is expected.
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kFailedPrecondition);
// Program mock as sending and is ready to be stopped.
EXPECT_CALL(*audio_device_, Recording()).WillOnce(Return(true));
EXPECT_CALL(*audio_device_, StopRecording()).WillOnce(Return(0));
EXPECT_TRUE(voip_core_->StopSend(*channel));
voip_core_->ReleaseChannel(*channel);
EXPECT_EQ(voip_core_->StopSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, SendDtmfEventWithoutStartSend) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_TRUE(channel);
voip_core_->RegisterTelephoneEventType(*channel, kPcmuPayload,
voip_core_->RegisterTelephoneEventType(channel, kPcmuPayload,
kPcmuSampleRateHz);
// Send Dtmf event without calling StartSend beforehand, thus
// Dtmf events cannot be sent and false is expected.
EXPECT_FALSE(voip_core_->SendDtmfEvent(*channel, kDtmfEventCode,
kDtmfEventDurationMs));
// Dtmf events cannot be sent and kFailedPrecondition is expected.
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kFailedPrecondition);
voip_core_->ReleaseChannel(*channel);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, StartSendAndPlayoutWithoutSettingCodec) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_TRUE(channel);
// Call StartSend and StartPlayout without setting send/receive
// codec. Code should see that codecs aren't set and return false.
EXPECT_FALSE(voip_core_->StartSend(*channel));
EXPECT_FALSE(voip_core_->StartPlayout(*channel));
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kFailedPrecondition);
EXPECT_EQ(voip_core_->StartPlayout(channel), VoipResult::kFailedPrecondition);
voip_core_->ReleaseChannel(*channel);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, StopSendAndPlayoutWithoutStarting) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_TRUE(channel);
voip_core_->SetSendCodec(*channel, kPcmuPayload, kPcmuFormat);
voip_core_->SetReceiveCodecs(*channel, {{kPcmuPayload, kPcmuFormat}});
EXPECT_EQ(voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat),
VoipResult::kOk);
EXPECT_EQ(
voip_core_->SetReceiveCodecs(channel, {{kPcmuPayload, kPcmuFormat}}),
VoipResult::kOk);
// Call StopSend and StopPlayout without starting them in
// the first place. Should see that it is already in the
// stopped state and return true.
EXPECT_TRUE(voip_core_->StopSend(*channel));
EXPECT_TRUE(voip_core_->StopPlayout(*channel));
EXPECT_EQ(voip_core_->StopSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->StopPlayout(channel), VoipResult::kOk);
voip_core_->ReleaseChannel(*channel);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
// This tests correctness on ProcessThread usage where we expect the first/last
@ -190,25 +193,22 @@ TEST_F(VoipCoreTest, TestProcessThreadOperation) {
auto channel_one = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
auto channel_two = voip_core_->CreateChannel(&transport_, 0xdeadbeef);
EXPECT_TRUE(channel_one);
EXPECT_TRUE(channel_two);
EXPECT_CALL(*process_thread_, Stop);
EXPECT_CALL(*process_thread_, DeRegisterModule).Times(2);
voip_core_->ReleaseChannel(*channel_one);
voip_core_->ReleaseChannel(*channel_two);
EXPECT_EQ(voip_core_->ReleaseChannel(channel_one), VoipResult::kOk);
EXPECT_EQ(voip_core_->ReleaseChannel(channel_two), VoipResult::kOk);
EXPECT_CALL(*process_thread_, Start);
EXPECT_CALL(*process_thread_, RegisterModule);
auto channel_three = voip_core_->CreateChannel(&transport_, absl::nullopt);
EXPECT_TRUE(channel_three);
EXPECT_CALL(*process_thread_, Stop);
EXPECT_CALL(*process_thread_, DeRegisterModule);
voip_core_->ReleaseChannel(*channel_three);
EXPECT_EQ(voip_core_->ReleaseChannel(channel_three), VoipResult::kOk);
}
} // namespace

219
audio/voip/voip_core.cc
View file

@ -127,10 +127,9 @@ bool VoipCore::InitializeIfNeeded() {
return true;
}
absl::optional<ChannelId> VoipCore::CreateChannel(
Transport* transport,
absl::optional<uint32_t> local_ssrc) {
absl::optional<ChannelId> channel_id;
ChannelId VoipCore::CreateChannel(Transport* transport,
absl::optional<uint32_t> local_ssrc) {
ChannelId channel_id;
// Set local ssrc to random if not set by caller.
if (!local_ssrc) {
@ -153,7 +152,7 @@ absl::optional<ChannelId> VoipCore::CreateChannel(
start_process_thread = channels_.empty();
channel_id = static_cast<ChannelId>(next_channel_id_);
channels_[*channel_id] = channel;
channels_[channel_id] = channel;
next_channel_id_++;
if (next_channel_id_ >= kMaxChannelId) {
next_channel_id_ = 0;
@ -161,7 +160,7 @@ absl::optional<ChannelId> VoipCore::CreateChannel(
}
// Set ChannelId in audio channel for logging/debugging purpose.
channel->SetId(*channel_id);
channel->SetId(channel_id);
if (start_process_thread) {
process_thread_->Start();
@ -170,7 +169,7 @@ absl::optional<ChannelId> VoipCore::CreateChannel(
return channel_id;
}
void VoipCore::ReleaseChannel(ChannelId channel_id) {
VoipResult VoipCore::ReleaseChannel(ChannelId channel_id) {
// Destroy channel outside of the lock.
rtc::scoped_refptr<AudioChannel> channel;
@ -188,8 +187,10 @@ void VoipCore::ReleaseChannel(ChannelId channel_id) {
no_channels_after_release = channels_.empty();
}
VoipResult status_code = VoipResult::kOk;
if (!channel) {
RTC_LOG(LS_WARNING) << "Channel " << channel_id << " not found";
status_code = VoipResult::kInvalidArgument;
}
if (no_channels_after_release) {
@ -201,9 +202,12 @@ void VoipCore::ReleaseChannel(ChannelId channel_id) {
if (audio_device_module_->Playing()) {
if (audio_device_module_->StopPlayout() != 0) {
RTC_LOG(LS_WARNING) << "StopPlayout failed";
status_code = VoipResult::kInternal;
}
}
}
return status_code;
}
rtc::scoped_refptr<AudioChannel> VoipCore::GetChannel(ChannelId channel_id) {
@ -281,174 +285,219 @@ bool VoipCore::UpdateAudioTransportWithSenders() {
return true;
}
bool VoipCore::StartSend(ChannelId channel_id) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (!channel || !channel->StartSend()) {
return false;
}
return UpdateAudioTransportWithSenders();
}
bool VoipCore::StopSend(ChannelId channel_id) {
VoipResult VoipCore::StartSend(ChannelId channel_id) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (!channel) {
return false;
return VoipResult::kInvalidArgument;
}
if (!channel->StartSend()) {
return VoipResult::kFailedPrecondition;
}
return UpdateAudioTransportWithSenders() ? VoipResult::kOk
: VoipResult::kInternal;
}
VoipResult VoipCore::StopSend(ChannelId channel_id) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (!channel) {
return VoipResult::kInvalidArgument;
}
channel->StopSend();
return UpdateAudioTransportWithSenders();
return UpdateAudioTransportWithSenders() ? VoipResult::kOk
: VoipResult::kInternal;
}
bool VoipCore::StartPlayout(ChannelId channel_id) {
VoipResult VoipCore::StartPlayout(ChannelId channel_id) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (!channel) {
return false;
return VoipResult::kInvalidArgument;
}
if (channel->IsPlaying()) {
return true;
return VoipResult::kOk;
}
if (!channel->StartPlay()) {
return false;
return VoipResult::kFailedPrecondition;
}
// Initialize audio device module and default device if needed.
if (!InitializeIfNeeded()) {
return false;
return VoipResult::kInternal;
}
if (!audio_device_module_->Playing()) {
if (audio_device_module_->InitPlayout() != 0) {
RTC_LOG(LS_ERROR) << "InitPlayout failed";
return false;
return VoipResult::kInternal;
}
if (audio_device_module_->StartPlayout() != 0) {
RTC_LOG(LS_ERROR) << "StartPlayout failed";
return false;
return VoipResult::kInternal;
}
}
return true;
return VoipResult::kOk;
}
bool VoipCore::StopPlayout(ChannelId channel_id) {
VoipResult VoipCore::StopPlayout(ChannelId channel_id) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (!channel) {
return false;
return VoipResult::kInvalidArgument;
}
channel->StopPlay();
return true;
return VoipResult::kOk;
}
void VoipCore::ReceivedRTPPacket(ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtp_packet) {
VoipResult VoipCore::ReceivedRTPPacket(
ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtp_packet) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
channel->ReceivedRTPPacket(rtp_packet);
if (!channel) {
return VoipResult::kInvalidArgument;
}
channel->ReceivedRTPPacket(rtp_packet);
return VoipResult::kOk;
}
void VoipCore::ReceivedRTCPPacket(ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtcp_packet) {
VoipResult VoipCore::ReceivedRTCPPacket(
ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtcp_packet) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
channel->ReceivedRTCPPacket(rtcp_packet);
if (!channel) {
return VoipResult::kInvalidArgument;
}
channel->ReceivedRTCPPacket(rtcp_packet);
return VoipResult::kOk;
}
void VoipCore::SetSendCodec(ChannelId channel_id,
int payload_type,
const SdpAudioFormat& encoder_format) {
VoipResult VoipCore::SetSendCodec(ChannelId channel_id,
int payload_type,
const SdpAudioFormat& encoder_format) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
auto encoder = encoder_factory_->MakeAudioEncoder(
payload_type, encoder_format, absl::nullopt);
channel->SetEncoder(payload_type, encoder_format, std::move(encoder));
if (!channel) {
return VoipResult::kInvalidArgument;
}
auto encoder = encoder_factory_->MakeAudioEncoder(
payload_type, encoder_format, absl::nullopt);
channel->SetEncoder(payload_type, encoder_format, std::move(encoder));
return VoipResult::kOk;
}
void VoipCore::SetReceiveCodecs(
VoipResult VoipCore::SetReceiveCodecs(
ChannelId channel_id,
const std::map<int, SdpAudioFormat>& decoder_specs) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
channel->SetReceiveCodecs(decoder_specs);
if (!channel) {
return VoipResult::kInvalidArgument;
}
channel->SetReceiveCodecs(decoder_specs);
return VoipResult::kOk;
}
void VoipCore::RegisterTelephoneEventType(ChannelId channel_id,
int rtp_payload_type,
int sample_rate_hz) {
VoipResult VoipCore::RegisterTelephoneEventType(ChannelId channel_id,
int rtp_payload_type,
int sample_rate_hz) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
channel->RegisterTelephoneEventType(rtp_payload_type, sample_rate_hz);
if (!channel) {
return VoipResult::kInvalidArgument;
}
channel->RegisterTelephoneEventType(rtp_payload_type, sample_rate_hz);
return VoipResult::kOk;
}
bool VoipCore::SendDtmfEvent(ChannelId channel_id,
DtmfEvent dtmf_event,
int duration_ms) {
VoipResult VoipCore::SendDtmfEvent(ChannelId channel_id,
DtmfEvent dtmf_event,
int duration_ms) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
return channel->SendTelephoneEvent(static_cast<int>(dtmf_event),
duration_ms);
if (!channel) {
return VoipResult::kInvalidArgument;
}
return false;
return (channel->SendTelephoneEvent(static_cast<int>(dtmf_event), duration_ms)
? VoipResult::kOk
: VoipResult::kFailedPrecondition);
}
absl::optional<IngressStatistics> VoipCore::GetIngressStatistics(
ChannelId channel_id) {
VoipResult VoipCore::GetIngressStatistics(ChannelId channel_id,
IngressStatistics& ingress_stats) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
return channel->GetIngressStatistics();
if (!channel) {
return VoipResult::kInvalidArgument;
}
return absl::nullopt;
ingress_stats = channel->GetIngressStatistics();
return VoipResult::kOk;
}
void VoipCore::SetInputMuted(ChannelId channel_id, bool enable) {
VoipResult VoipCore::SetInputMuted(ChannelId channel_id, bool enable) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
channel->SetMute(enable);
if (!channel) {
return VoipResult::kInvalidArgument;
}
channel->SetMute(enable);
return VoipResult::kOk;
}
absl::optional<VolumeInfo> VoipCore::GetInputVolumeInfo(ChannelId channel_id) {
VoipResult VoipCore::GetInputVolumeInfo(ChannelId channel_id,
VolumeInfo& input_volume) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
VolumeInfo input_volume;
input_volume.audio_level = channel->GetInputAudioLevel();
input_volume.total_energy = channel->GetInputTotalEnergy();
input_volume.total_duration = channel->GetInputTotalDuration();
return input_volume;
if (!channel) {
return VoipResult::kInvalidArgument;
}
return absl::nullopt;
input_volume.audio_level = channel->GetInputAudioLevel();
input_volume.total_energy = channel->GetInputTotalEnergy();
input_volume.total_duration = channel->GetInputTotalDuration();
return VoipResult::kOk;
}
absl::optional<VolumeInfo> VoipCore::GetOutputVolumeInfo(ChannelId channel_id) {
VoipResult VoipCore::GetOutputVolumeInfo(ChannelId channel_id,
VolumeInfo& output_volume) {
rtc::scoped_refptr<AudioChannel> channel = GetChannel(channel_id);
if (channel) {
VolumeInfo output_volume;
output_volume.audio_level = channel->GetOutputAudioLevel();
output_volume.total_energy = channel->GetOutputTotalEnergy();
output_volume.total_duration = channel->GetOutputTotalDuration();
return output_volume;
if (!channel) {
return VoipResult::kInvalidArgument;
}
return absl::nullopt;
output_volume.audio_level = channel->GetOutputAudioLevel();
output_volume.total_energy = channel->GetOutputTotalEnergy();
output_volume.total_duration = channel->GetOutputTotalDuration();
return VoipResult::kOk;
}
} // namespace webrtc

57
audio/voip/voip_core.h
View file

@ -74,45 +74,48 @@ class VoipCore : public VoipEngine,
VoipVolumeControl& VolumeControl() override { return *this; }
// Implements VoipBase interfaces.
absl::optional<ChannelId> CreateChannel(
Transport* transport,
absl::optional<uint32_t> local_ssrc) override;
void ReleaseChannel(ChannelId channel_id) override;
bool StartSend(ChannelId channel_id) override;
bool StopSend(ChannelId channel_id) override;
bool StartPlayout(ChannelId channel_id) override;
bool StopPlayout(ChannelId channel_id) override;
ChannelId CreateChannel(Transport* transport,
absl::optional<uint32_t> local_ssrc) override;
VoipResult ReleaseChannel(ChannelId channel_id) override;
VoipResult StartSend(ChannelId channel_id) override;
VoipResult StopSend(ChannelId channel_id) override;
VoipResult StartPlayout(ChannelId channel_id) override;
VoipResult StopPlayout(ChannelId channel_id) override;
// Implements VoipNetwork interfaces.
void ReceivedRTPPacket(ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtp_packet) override;
void ReceivedRTCPPacket(ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtcp_packet) override;
VoipResult ReceivedRTPPacket(
ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtp_packet) override;
VoipResult ReceivedRTCPPacket(
ChannelId channel_id,
rtc::ArrayView<const uint8_t> rtcp_packet) override;
// Implements VoipCodec interfaces.
void SetSendCodec(ChannelId channel_id,
int payload_type,
const SdpAudioFormat& encoder_format) override;
void SetReceiveCodecs(
VoipResult SetSendCodec(ChannelId channel_id,
int payload_type,
const SdpAudioFormat& encoder_format) override;
VoipResult SetReceiveCodecs(
ChannelId channel_id,
const std::map<int, SdpAudioFormat>& decoder_specs) override;
// Implements VoipDtmf interfaces.
void RegisterTelephoneEventType(ChannelId channel_id,
int rtp_payload_type,
int sample_rate_hz) override;
bool SendDtmfEvent(ChannelId channel_id,
DtmfEvent dtmf_event,
int duration_ms) override;
VoipResult RegisterTelephoneEventType(ChannelId channel_id,
int rtp_payload_type,
int sample_rate_hz) override;
VoipResult SendDtmfEvent(ChannelId channel_id,
DtmfEvent dtmf_event,
int duration_ms) override;
// Implements VoipStatistics interfaces.
absl::optional<IngressStatistics> GetIngressStatistics(
ChannelId channel_id) override;
VoipResult GetIngressStatistics(ChannelId channel_id,
IngressStatistics& ingress_stats) override;
// Implements VoipVolumeControl interfaces.
void SetInputMuted(ChannelId channel_id, bool enable) override;
absl::optional<VolumeInfo> GetInputVolumeInfo(ChannelId channel_id) override;
absl::optional<VolumeInfo> GetOutputVolumeInfo(ChannelId channel_id) override;
VoipResult SetInputMuted(ChannelId channel_id, bool enable) override;
VoipResult GetInputVolumeInfo(ChannelId channel_id,
VolumeInfo& volume_info) override;
VoipResult GetOutputVolumeInfo(ChannelId channel_id,
VolumeInfo& volume_info) override;
private:
// Initialize ADM and default audio device if needed.

25
examples/androidvoip/jni/android_voip_client.cc
View file

@ -347,8 +347,8 @@ void AndroidVoipClient::StopSession(JNIEnv* env) {
/*isSuccessful=*/false);
return;
}
if (!voip_engine_->Base().StopSend(*channel_) ||
!voip_engine_->Base().StopPlayout(*channel_)) {
if (voip_engine_->Base().StopSend(*channel_) != webrtc::VoipResult::kOk ||
voip_engine_->Base().StopPlayout(*channel_) != webrtc::VoipResult::kOk) {
Java_VoipClient_onStopSessionCompleted(env_, j_voip_client_,
/*isSuccessful=*/false);
return;
@ -372,8 +372,9 @@ void AndroidVoipClient::StartSend(JNIEnv* env) {
/*isSuccessful=*/false);
return;
}
Java_VoipClient_onStartSendCompleted(
env_, j_voip_client_, voip_engine_->Base().StartSend(*channel_));
bool sending_started =
(voip_engine_->Base().StartSend(*channel_) == webrtc::VoipResult::kOk);
Java_VoipClient_onStartSendCompleted(env_, j_voip_client_, sending_started);
}
void AndroidVoipClient::StopSend(JNIEnv* env) {
@ -385,8 +386,9 @@ void AndroidVoipClient::StopSend(JNIEnv* env) {
/*isSuccessful=*/false);
return;
}
Java_VoipClient_onStopSendCompleted(env_, j_voip_client_,
voip_engine_->Base().StopSend(*channel_));
bool sending_stopped =
(voip_engine_->Base().StopSend(*channel_) == webrtc::VoipResult::kOk);
Java_VoipClient_onStopSendCompleted(env_, j_voip_client_, sending_stopped);
}
void AndroidVoipClient::StartPlayout(JNIEnv* env) {
@ -398,8 +400,10 @@ void AndroidVoipClient::StartPlayout(JNIEnv* env) {
/*isSuccessful=*/false);
return;
}
Java_VoipClient_onStartPlayoutCompleted(
env_, j_voip_client_, voip_engine_->Base().StartPlayout(*channel_));
bool playout_started =
(voip_engine_->Base().StartPlayout(*channel_) == webrtc::VoipResult::kOk);
Java_VoipClient_onStartPlayoutCompleted(env_, j_voip_client_,
playout_started);
}
void AndroidVoipClient::StopPlayout(JNIEnv* env) {
@ -411,8 +415,9 @@ void AndroidVoipClient::StopPlayout(JNIEnv* env) {
/*isSuccessful=*/false);
return;
}
Java_VoipClient_onStopPlayoutCompleted(
env_, j_voip_client_, voip_engine_->Base().StopPlayout(*channel_));
bool playout_stopped =
(voip_engine_->Base().StopPlayout(*channel_) == webrtc::VoipResult::kOk);
Java_VoipClient_onStopPlayoutCompleted(env_, j_voip_client_, playout_stopped);
}
void AndroidVoipClient::Delete(JNIEnv* env) {