1 //////////////////////////////////////////////////////////////////////////////
2 //
3 // Copyright (c) 2004-2021 musikcube team
4 //
5 // All rights reserved.
6 //
7 // Redistribution and use in source and binary forms, with or without
8 // modification, are permitted provided that the following conditions are met:
9 //
10 //    * Redistributions of source code must retain the above copyright notice,
11 //      this list of conditions and the following disclaimer.
12 //
13 //    * Redistributions in binary form must reproduce the above copyright
14 //      notice, this list of conditions and the following disclaimer in the
15 //      documentation and/or other materials provided with the distribution.
16 //
17 //    * Neither the name of the author nor the names of other contributors may
18 //      be used to endorse or promote products derived from this software
19 //      without specific prior written permission.
20 //
21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 // POSSIBILITY OF SUCH DAMAGE.
32 //
33 //////////////////////////////////////////////////////////////////////////////
34 
35 #pragma once
36 
37 #include <musikcore/config.h>
38 #include <musikcore/io/DataStreamFactory.h>
39 #include <musikcore/audio/Buffer.h>
40 #include <musikcore/audio/IStream.h>
41 #include <musikcore/sdk/IDecoder.h>
42 #include <musikcore/sdk/IDSP.h>
43 #include <musikcore/sdk/constants.h>
44 
45 #include <deque>
46 #include <list>
47 
48 namespace musik { namespace core { namespace audio {
49 
50     class Stream : public IStream {
51         using IDSP = musik::core::sdk::IDSP;
52         using IDecoder = musik::core::sdk::IDecoder;
53         using IBuffer = musik::core::sdk::IBuffer;
54         using StreamFlags = musik::core::sdk::StreamFlags;
55 
56         public:
57             static IStreamPtr Create(
58                 int samplesPerChannel = 2048,
59                 double bufferLengthSeconds = 5,
60                 StreamFlags options = StreamFlags::None);
61 
62             static IStream* CreateUnmanaged(
63                 int samplesPerChannel = 2048,
64                 double bufferLengthSeconds = 5,
65                 StreamFlags options = StreamFlags::None);
66 
67         private:
68             Stream(
69                 int samplesPerChannel,
70                 double bufferLengthSeconds,
71                 StreamFlags options);
72 
73         public:
74             virtual ~Stream();
75 
76             virtual IBuffer* GetNextProcessedOutputBuffer() override;
77             virtual void OnBufferProcessedByPlayer(IBuffer* buffer) override;
78             virtual double SetPosition(double seconds) override;
79             virtual double GetDuration() override;
80             virtual bool OpenStream(std::string uri) override;
81             virtual void Interrupt() override;
82             virtual int GetCapabilities() override;
Eof()83             virtual bool Eof() override { return this->done; }
Release()84             virtual void Release() override { delete this; }
85 
86         private:
87             bool GetNextBufferFromDecoder();
88             Buffer* GetEmptyBuffer();
89             void RefillInternalBuffers();
90 
91             typedef std::deque<Buffer*> BufferList;
92             typedef std::shared_ptr<IDecoder> DecoderPtr;
93             typedef std::shared_ptr<IDSP> DspPtr;
94             typedef std::vector<DspPtr> Dsps;
95 
96             long decoderSampleRate;
97             long decoderChannels;
98             std::string uri;
99             musik::core::io::DataStreamFactory::DataStreamPtr dataStream;
100 
101             BufferList recycledBuffers;
102             BufferList filledBuffers;
103 
104             Buffer* decoderBuffer;
105             long decoderSampleOffset;
106             long decoderSamplesRemain;
107             uint64_t decoderPosition;
108 
109             musik::core::sdk::StreamFlags options;
110             int samplesPerChannel;
111             long samplesPerBuffer;
112             int bufferCount;
113             bool done;
114             double bufferLengthSeconds;
115             int capabilities;
116 
117             float* rawBuffer;
118 
119             DecoderPtr decoder;
120             Dsps dsps;
121     };
122 
123 } } }
124