(ded4a3e0a) v0.9.0.7

2019-06-25 16:00:44 +03:00
parent e5ae622c77
commit 4a51db77b5
1777 changed files with 421528 additions and 917 deletions
@@ -0,0 +1,81 @@
+// MonoGame - Copyright (C) The MonoGame Team
+// This file is subject to the terms and conditions defined in
+// file 'LICENSE.txt', which is part of this source code package.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+
+namespace Microsoft.Xna.Framework.Content.Pipeline.Audio
+{
+    public abstract class AudioProfile
+    {
+        private static readonly LoadedTypeCollection<AudioProfile> _profiles = new LoadedTypeCollection<AudioProfile>();
+
+        /// <summary>
+        /// Find the profile for this target platform.
+        /// </summary>
+        /// <param name="platform">The platform target for audio.</param>
+        /// <returns></returns>
+        public static AudioProfile ForPlatform(TargetPlatform platform)
+        {
+            var profile = _profiles.FirstOrDefault(h => h.Supports(platform));
+            if (profile != null)
+                return profile;
+
+            throw new PipelineException("There is no supported audio profile for the '" + platform + "' platform!");
+        }
+
+        /// <summary>
+        /// Returns true if this profile supports audio processing for this platform.
+        /// </summary>
+        public abstract bool Supports(TargetPlatform platform);
+
+        /// <summary>
+        /// Converts the audio content to work on targeted platform.
+        /// </summary>
+        /// <param name="platform">The platform to build the audio content for.</param>
+        /// <param name="quality">The suggested audio quality level.</param>
+        /// <param name="content">The audio content to convert.</param>
+        /// <returns>The quality used for conversion which could be different from the suggested quality.</returns>
+        public abstract ConversionQuality ConvertAudio(TargetPlatform platform, ConversionQuality quality, AudioContent content);
+
+        /// <summary>
+        /// Converts the audio content to a streaming format that works on targeted platform.
+        /// </summary>
+        /// <param name="platform">The platform to build the audio content for.</param>
+        /// <param name="quality">The suggested audio quality level.</param>
+        /// <param name="content">he audio content to convert.</param>
+        /// <param name="outputFileName"></param>
+        /// <returns>The quality used for conversion which could be different from the suggested quality.</returns>
+        public abstract ConversionQuality ConvertStreamingAudio(TargetPlatform platform, ConversionQuality quality, AudioContent content, ref string outputFileName);
+
+
+        protected static int QualityToSampleRate(ConversionQuality quality, int sourceSampleRate)
+        {
+            switch (quality)
+            {
+                case ConversionQuality.Low:
+                    return Math.Max(8000, (int)Math.Floor(sourceSampleRate / 2.0));
+                case ConversionQuality.Medium:
+                    return Math.Max(8000, (int)Math.Floor((sourceSampleRate / 4.0) * 3));
+            }
+
+            return Math.Max(8000, sourceSampleRate);
+        }
+
+        protected static int QualityToBitRate(ConversionQuality quality)
+        {
+            switch (quality)
+            {
+                case ConversionQuality.Low:
+                    return 96000;
+                case ConversionQuality.Medium:
+                    return 128000;
+            }
+
+            return 192000;
+        }
+    }
+}