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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef PPAPI_CPP_VIDEO_READER_H_ | |
| 6 #define PPAPI_CPP_VIDEO_READER_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "ppapi/c/pp_time.h" | |
| 11 #include "ppapi/cpp/completion_callback.h" | |
| 12 #include "ppapi/cpp/pass_ref.h" | |
| 13 #include "ppapi/cpp/resource.h" | |
| 14 | |
| 15 /// @file | |
| 16 /// This file defines the API to create and use video stream readers. | |
| 17 | |
| 18 namespace pp { | |
| 19 | |
| 20 class InstanceHandle; | |
| 21 class VideoFrame; | |
| 22 | |
| 23 // VideoReader ----------------------------------------------------------------- | |
| 24 | |
| 25 /// The <code>VideoReader</code> class represents a video reader resource. | |
| 26 class VideoReader : public Resource { | |
| 27 public: | |
| 28 /// Default constructor for creating a <code>VideoReader</code> object. | |
| 29 VideoReader(); | |
| 30 | |
| 31 /// Constructor for creating a <code>VideoReader</code> for an instance. | |
| 32 explicit VideoReader(const InstanceHandle& instance); | |
| 33 | |
| 34 /// The copy constructor for <code>VideoReader</code>. | |
| 35 /// | |
| 36 /// @param[in] other A reference to a <code>VideoReader</code>. | |
| 37 VideoReader(const VideoReader& other); | |
| 38 | |
| 39 /// A constructor used when you have received a PP_Resource as a return | |
| 40 /// value that has had its reference count incremented for you. | |
| 41 /// | |
| 42 /// @param[in] resource A PP_Resource corresponding to a video reader. | |
| 43 VideoReader(PassRef, PP_Resource resource); | |
| 44 | |
| 45 /// Opens a stream for reading video and associates it with the given id. | |
| 46 /// | |
| 47 /// @param[in] stream_id A <code>Var</code> uniquely identifying the stream | |
| 48 /// to read from. | |
| 49 /// @param[in] callback A <code>CompletionCallback</code> to be called upon | |
| 50 /// completion of Open. | |
| 51 /// | |
| 52 /// @return A return code from <code>pp_errors.h</code>. | |
| 53 int32_t Open(const Var& stream_id, | |
| 54 const CompletionCallback& cc); | |
| 55 | |
| 56 /// Gets the next frame of video from the reader's stream. | |
| 57 /// | |
| 58 /// @param[in] callback A <code>CompletionCallbackWithOutput</code> to be | |
| 59 /// called upon completion of GetNextFrame. | |
| 60 /// | |
| 61 /// @return A return code from <code>pp_errors.h</code>. | |
| 62 int32_t GetFrame(const CompletionCallbackWithOutput<VideoFrame>& cc); | |
| 63 | |
| 64 /// Closes the reader's current stream. | |
| 65 void Close(); | |
| 66 }; | |
| 67 | |
| 68 } // namespace pp | |
| 69 | |
| 70 #endif // PPAPI_CPP_VIDEO_READER_H_ | |
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Chromium Code Reviews
Issue 14192054:
Rename PPAPI Video Stream APIs. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src