src/Tizen.Multimedia.StreamRecorder/StreamRecorder/StreamRecorder.Capabilities.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18 using System.Collections.Generic;
  19 using System.Linq;
  20 using Native = Interop.StreamRecorder;
  21
  22 namespace Tizen.Multimedia
  23 {
  24     public partial class StreamRecorder
  25     {
  26         internal void LoadCapabilities()
  27         {
  28             _videoCodecs = LoadVideoCodecs(this);
  29             _audioCodecs = LoadAudioCodecs(this);
  30             _fileFormats = LoadFileFormats(this);
  31             _videoResolutions = LoadResolutions(this);
  32         }
  33
  34         private static IEnumerable<RecorderVideoCodec> LoadVideoCodecs(StreamRecorder recorder)
  35         {
  36             var result = new List<RecorderVideoCodec>();
  37             Native.VideoEncoderCallback callback = (codec, _) =>
  38             {
  39                 result.Add(codec.ToRecorderEnum());
  40                 return true;
  41             };
  42
  43             Native.VideoEncoders(recorder.Handle, callback).ThrowIfError("Failed to get the supported video codecs.");
  44
  45             return result.AsReadOnly();
  46         }
  47
  48         private static IEnumerable<RecorderAudioCodec> LoadAudioCodecs(StreamRecorder recorder)
  49         {
  50             var result = new List<RecorderAudioCodec>();
  51
  52             Native.AudioEncoders(recorder.Handle, (codec, _) =>
  53             {
  54                 result.Add(codec.ToRecorderEnum());
  55                 return true;
  56             }).ThrowIfError("Failed to get the supported audio codecs.");
  57
  58             return result.AsReadOnly();
  59         }
  60
  61         private static IEnumerable<RecorderFileFormat> LoadFileFormats(StreamRecorder recorder)
  62         {
  63             var result = new List<RecorderFileFormat>();
  64
  65             Native.FileFormats(recorder.Handle, (fileFormat, _) =>
  66             {
  67                 result.Add(fileFormat.ToRecorderEnum());
  68                 return true;
  69             }).ThrowIfError("Failed to get the supported file formats.");
  70
  71             return result.AsReadOnly();
  72         }
  73
  74         private static IEnumerable<Size> LoadResolutions(StreamRecorder recorder)
  75         {
  76             List<Size> result = new List<Size>();
  77
  78             Native.VideoResolutionCallback callback = (width, height, _) =>
  79             {
  80                 result.Add(new Size(width, height));
  81                 return true;
  82             };
  83
  84             Native.VideoResolution(recorder.Handle, callback).
  85                 ThrowIfError("Failed to get the supported video resolutions.");
  86
  87             return result.AsReadOnly();
  88         }
  89
  90         private IEnumerable<RecorderFileFormat> _fileFormats;
  91
  92         /// <summary>
  93         /// Gets the file formats that the current device supports.
  94         /// </summary>
  95         /// <returns>An IEnumerable of <see cref="RecorderFileFormat"/> representing the supported file formats.</returns>
  96         public IEnumerable<RecorderFileFormat> GetSupportedFileFormats() => _fileFormats;
  97
  98         private IEnumerable<RecorderAudioCodec> _audioCodecs;
  99
 100         /// <summary>
 101         /// Gets the audio codecs that the current device supports.
 102         /// </summary>
 103         /// <returns>An IEnumerable of <see cref="RecorderAudioCodec"/> representing the supported audio codecs.</returns>
 104         public IEnumerable<RecorderAudioCodec> GetSupportedAudioCodecs() => _audioCodecs;
 105
 106         private IEnumerable<RecorderVideoCodec> _videoCodecs;
 107
 108         /// <summary>
 109         /// Gets the video codecs that the current device supports.
 110         /// </summary>
 111         /// <returns>An IEnumerable of <see cref="RecorderVideoCodec"/> representing the supported video codecs.</returns>
 112         public IEnumerable<RecorderVideoCodec> GetSupportedVideoCodecs() => _videoCodecs;
 113
 114         private IEnumerable<Size> _videoResolutions;
 115
 116         /// <summary>
 117         /// Gets the video resolutions that the current device supports.
 118         /// </summary>
 119         /// <returns>An IEnumerable of <see cref="Size"/> representing the supported resolutions.</returns>
 120         public IEnumerable<Size> GetSupportedVideoResolutions() => _videoResolutions;
 121
 122         internal void ValidateFileFormat(RecorderFileFormat format)
 123         {
 124             if (_fileFormats.Contains(format) == false)
 125             {
 126                 throw new NotSupportedException($"{format.ToString()} is not supported.");
 127             }
 128         }
 129
 130         internal void ValidateAudioCodec(RecorderAudioCodec codec)
 131         {
 132             if (_audioCodecs.Contains(codec) == false)
 133             {
 134                 throw new NotSupportedException($"{codec.ToString()} is not supported.");
 135             }
 136         }
 137
 138         internal void ValidateVideoCodec(RecorderVideoCodec codec)
 139         {
 140             if (_videoCodecs.Contains(codec) == false)
 141             {
 142                 throw new NotSupportedException($"{codec.ToString()} is not supported.");
 143             }
 144         }
 145
 146         internal void ValidateVideoResolution(Size resolution)
 147         {
 148             if (_videoResolutions.Contains(resolution) == false)
 149             {
 150                 throw new NotSupportedException($"Resolution({resolution.ToString()}) is not supported.");
 151             }
 152         }
 153     }
 154 }