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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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81 // Returns a (constant) pointer the RTP header of the first packet in the | 81 // Returns a (constant) pointer the RTP header of the first packet in the |
82 // buffer. Returns NULL if the buffer is empty. | 82 // buffer. Returns NULL if the buffer is empty. |
83 virtual const RTPHeader* NextRtpHeader() const; | 83 virtual const RTPHeader* NextRtpHeader() const; |
84 | 84 |
85 // Extracts the first packet in the buffer and returns a pointer to it. | 85 // Extracts the first packet in the buffer and returns a pointer to it. |
86 // Returns NULL if the buffer is empty. The caller is responsible for deleting | 86 // Returns NULL if the buffer is empty. The caller is responsible for deleting |
87 // the packet. | 87 // the packet. |
88 // Subsequent packets with the same timestamp as the one extracted will be | 88 // Subsequent packets with the same timestamp as the one extracted will be |
89 // discarded and properly deleted. The number of discarded packets will be | 89 // discarded and properly deleted. The number of discarded packets will be |
90 // written to the output variable |discard_count|. | 90 // written to the output variable |discard_count|. |
91 virtual Packet* GetNextPacket(int* discard_count); | 91 virtual Packet* GetNextPacket(size_t* discard_count); |
92 | 92 |
93 // Discards the first packet in the buffer. The packet is deleted. | 93 // Discards the first packet in the buffer. The packet is deleted. |
94 // Returns PacketBuffer::kBufferEmpty if the buffer is empty, | 94 // Returns PacketBuffer::kBufferEmpty if the buffer is empty, |
95 // PacketBuffer::kOK otherwise. | 95 // PacketBuffer::kOK otherwise. |
96 virtual int DiscardNextPacket(); | 96 virtual int DiscardNextPacket(); |
97 | 97 |
98 // Discards all packets that are (strictly) older than timestamp_limit, | 98 // Discards all packets that are (strictly) older than timestamp_limit, |
99 // but newer than timestamp_limit - horizon_samples. Setting horizon_samples | 99 // but newer than timestamp_limit - horizon_samples. Setting horizon_samples |
100 // to zero implies that the horizon is set to half the timestamp range. That | 100 // to zero implies that the horizon is set to half the timestamp range. That |
101 // is, if a packet is more than 2^31 timestamps into the future compared with | 101 // is, if a packet is more than 2^31 timestamps into the future compared with |
102 // timestamp_limit (including wrap-around), it is considered old. | 102 // timestamp_limit (including wrap-around), it is considered old. |
103 // Returns number of packets discarded. | 103 // Returns number of packets discarded. |
104 virtual int DiscardOldPackets(uint32_t timestamp_limit, | 104 virtual int DiscardOldPackets(uint32_t timestamp_limit, |
105 uint32_t horizon_samples); | 105 uint32_t horizon_samples); |
106 | 106 |
107 // Discards all packets that are (strictly) older than timestamp_limit. | 107 // Discards all packets that are (strictly) older than timestamp_limit. |
108 virtual int DiscardAllOldPackets(uint32_t timestamp_limit); | 108 virtual int DiscardAllOldPackets(uint32_t timestamp_limit); |
109 | 109 |
110 // Returns the number of packets in the buffer, including duplicates and | 110 // Returns the number of packets in the buffer, including duplicates and |
111 // redundant packets. | 111 // redundant packets. |
112 virtual int NumPacketsInBuffer() const; | 112 virtual size_t NumPacketsInBuffer() const; |
113 | 113 |
114 // Returns the number of samples in the buffer, including samples carried in | 114 // Returns the number of samples in the buffer, including samples carried in |
115 // duplicate and redundant packets. | 115 // duplicate and redundant packets. |
116 virtual int NumSamplesInBuffer(DecoderDatabase* decoder_database, | 116 virtual size_t NumSamplesInBuffer(DecoderDatabase* decoder_database, |
117 int last_decoded_length) const; | 117 size_t last_decoded_length) const; |
118 | 118 |
119 // Increase the waiting time counter for every packet in the buffer by |inc|. | 119 // Increase the waiting time counter for every packet in the buffer by |inc|. |
120 // The default value for |inc| is 1. | 120 // The default value for |inc| is 1. |
121 virtual void IncrementWaitingTimes(int inc = 1); | 121 virtual void IncrementWaitingTimes(int inc = 1); |
122 | 122 |
123 virtual void BufferStat(int* num_packets, int* max_num_packets) const; | 123 virtual void BufferStat(int* num_packets, int* max_num_packets) const; |
124 | 124 |
125 // Static method that properly deletes the first packet, and its payload | 125 // Static method that properly deletes the first packet, and its payload |
126 // array, in |packet_list|. Returns false if |packet_list| already was empty, | 126 // array, in |packet_list|. Returns false if |packet_list| already was empty, |
127 // otherwise true. | 127 // otherwise true. |
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146 } | 146 } |
147 | 147 |
148 private: | 148 private: |
149 size_t max_number_of_packets_; | 149 size_t max_number_of_packets_; |
150 PacketList buffer_; | 150 PacketList buffer_; |
151 DISALLOW_COPY_AND_ASSIGN(PacketBuffer); | 151 DISALLOW_COPY_AND_ASSIGN(PacketBuffer); |
152 }; | 152 }; |
153 | 153 |
154 } // namespace webrtc | 154 } // namespace webrtc |
155 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_PACKET_BUFFER_H_ | 155 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_PACKET_BUFFER_H_ |
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