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Diffstat (limited to 'third_party/libwebrtc/modules/audio_coding/neteq/tools/constant_pcm_packet_source.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_coding/neteq/tools/constant_pcm_packet_source.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/neteq/tools/constant_pcm_packet_source.h b/third_party/libwebrtc/modules/audio_coding/neteq/tools/constant_pcm_packet_source.h new file mode 100644 index 0000000000..ab4f5c2281 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_coding/neteq/tools/constant_pcm_packet_source.h @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef MODULES_AUDIO_CODING_NETEQ_TOOLS_CONSTANT_PCM_PACKET_SOURCE_H_ +#define MODULES_AUDIO_CODING_NETEQ_TOOLS_CONSTANT_PCM_PACKET_SOURCE_H_ + +#include <stdio.h> + +#include <string> + +#include "modules/audio_coding/neteq/tools/packet_source.h" + +namespace webrtc { +namespace test { + +// This class implements a packet source that delivers PCM16b encoded packets +// with a constant sample value. The payload length, constant sample value, +// sample rate, and payload type are all set in the constructor. +class ConstantPcmPacketSource : public PacketSource { + public: + ConstantPcmPacketSource(size_t payload_len_samples, + int16_t sample_value, + int sample_rate_hz, + int payload_type); + + ConstantPcmPacketSource(const ConstantPcmPacketSource&) = delete; + ConstantPcmPacketSource& operator=(const ConstantPcmPacketSource&) = delete; + + std::unique_ptr<Packet> NextPacket() override; + + private: + void WriteHeader(uint8_t* packet_memory); + + const size_t kHeaderLenBytes = 12; + const size_t payload_len_samples_; + const size_t packet_len_bytes_; + uint8_t encoded_sample_[2]; + const int samples_per_ms_; + double next_arrival_time_ms_; + const int payload_type_; + uint16_t seq_number_; + uint32_t timestamp_; + const uint32_t payload_ssrc_; +}; + +} // namespace test +} // namespace webrtc +#endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_CONSTANT_PCM_PACKET_SOURCE_H_ |