添加fmp4所需要的盒子编码器

src/JT1078.FMp4/Boxs/SampleDependencyTypeBox.cs

@@ -30,7 +30,6 @@ namespace JT1078.FMp4
             WriterFullBoxToBuffer(ref writer);
             if(SampleDependencyTypes!=null && SampleDependencyTypes.Count > 0)
             {
-                //todo: wait ref doc
                 foreach(var item in SampleDependencyTypes)
                 {
                     writer.WriteByte(item.IsLeading);

src/JT1078.FMp4/Boxs/TrackFragmentHeaderBox.cs

@@ -41,7 +41,6 @@ namespace JT1078.FMp4
             Start(ref writer);
             WriterFullBoxToBuffer(ref writer);
             writer.WriteUInt32(TrackID);
-            //todo:all the following are optional fields
             End(ref writer);
         }
     }

src/JT1078.FMp4/Boxs/TrackFragmentRandomAccessBox.cs

@@ -21,21 +21,21 @@ namespace JT1078.FMp4
         }
         public uint TrackID { get; set; }
         /// <summary>
-        /// 4byte 32-26
+        /// 26bit
         /// </summary>
-        public uint Reserved { get; set; } = 26;
+        private uint Reserved { get; set; } = 0;
         /// <summary>
-        /// 4byte 32-28
+        /// 2bit 
         /// </summary>
-        public uint LengthSizeOfTrafNum { get; set; }
+        public byte LengthSizeOfTrafNum { get; set; }
         /// <summary>
-        /// 4byte 32-30
+        /// 2bit
         /// </summary>
-        public uint LengthSizeOfTrunNum { get; set; }
+        public byte LengthSizeOfTrunNum { get; set; }
         /// <summary>
-        /// 4byte 32-32
+        /// 2bit 
         /// </summary>
-        public uint LengthSizeOfSampleNum { get; set; }
+        public byte LengthSizeOfSampleNum { get; set; }
         public uint NumberOfEntry { get; set; }
         public List<TrackFragmentRandomAccessInfo> TrackFragmentRandomAccessInfos { get; set; }
 
@@ -43,11 +43,56 @@ namespace JT1078.FMp4
         {
             Start(ref writer);
             WriterFullBoxToBuffer(ref writer);
-
-            //todo:tfra
+            writer.WriteUInt32(TrackID);
+            writer.WriteUInt32((uint)(LengthSizeOfSampleNum | (LengthSizeOfTrunNum << 2) | (LengthSizeOfTrafNum << 4)));
+            if(TrackFragmentRandomAccessInfos!=null && TrackFragmentRandomAccessInfos.Count > 0)
+            {
+                foreach (var item in TrackFragmentRandomAccessInfos)
+                {
+                    if (Version == 1) 
+                    {
+                        writer.WriteUInt64(item.Time);
+                        writer.WriteUInt64(item.MoofOffset);
+                    } 
+                    else 
+                    {
+                        writer.WriteUInt32((uint)item.Time);
+                        writer.WriteUInt32((uint)item.MoofOffset);
+                    }
+                    var length_size_of_traf_num = LengthSizeOfTrafNum + 1;
+                    ControlSizeOf(ref writer, item.TrafNumber, length_size_of_traf_num);
+                    var length_size_of_trun_num = LengthSizeOfTrunNum + 1;
+                    ControlSizeOf(ref writer, item.TrunNumber, length_size_of_trun_num);
+                    var length_size_of_sample_num = LengthSizeOfSampleNum + 1;
+                    ControlSizeOf(ref writer, item.SampleNumber, length_size_of_sample_num);
+                }
+            }
+            else
+            {
+                writer.WriteUInt32(0);
+            }
             End(ref writer);
         }
 
+        private void ControlSizeOf(ref FMp4MessagePackWriter writer,uint value,int length)
+        {
+            switch (length)
+            {
+                case 1:
+                    writer.WriteByte((byte)value);
+                    break;
+                case 2:
+                    writer.WriteUInt16((ushort)value);
+                    break;
+                case 3:
+                    writer.WriteUInt24(value);
+                    break;
+                case 4:
+                    writer.WriteUInt32(value);
+                    break;
+            }
+        }
+
         public class TrackFragmentRandomAccessInfo
         {
             public ulong Time { get; set; }

src/JT1078.FMp4/Boxs/TrackRunBox.cs

@@ -25,8 +25,12 @@ namespace JT1078.FMp4
         /// 可选的
         /// </summary>
         public int DataOffset { get; set; }
+        /// <summary>
+        /// 可选的
+        /// </summary>
         public uint FirstSampleFlags { get; set; }
         /// <summary>
+        /// 可选的
         /// length:SampleCount
         /// </summary>
         public List<TrackRunInfo> TrackRunInfos { get; set; }
@@ -35,7 +39,7 @@ namespace JT1078.FMp4
         {
             Start(ref writer);
             WriterFullBoxToBuffer(ref writer);
-            //todo: TrackRunBox
+            writer.WriteUInt32(SampleCount);
             End(ref writer);
         }
 

src/JT1078.FMp4/JT1078.FMp4.xml

@@ -824,22 +824,22 @@
         </member>
         <member name="P:JT1078.FMp4.TrackFragmentRandomAccessBox.Reserved">
             <summary>
-            4byte 32-26
+            26bit
             </summary>
         </member>
         <member name="P:JT1078.FMp4.TrackFragmentRandomAccessBox.LengthSizeOfTrafNum">
             <summary>
-            4byte 32-28
+            2bit 
             </summary>
         </member>
         <member name="P:JT1078.FMp4.TrackFragmentRandomAccessBox.LengthSizeOfTrunNum">
             <summary>
-            4byte 32-30
+            2bit
             </summary>
         </member>
         <member name="P:JT1078.FMp4.TrackFragmentRandomAccessBox.LengthSizeOfSampleNum">
             <summary>
-            4byte 32-32
+            2bit 
             </summary>
         </member>
         <member name="T:JT1078.FMp4.TrackHeaderBox">
@@ -871,8 +871,14 @@
             可选的
             </summary>
         </member>
+        <member name="P:JT1078.FMp4.TrackRunBox.FirstSampleFlags">
+            <summary>
+            可选的
+            </summary>
+        </member>
         <member name="P:JT1078.FMp4.TrackRunBox.TrackRunInfos">
             <summary>
+            可选的
             length:SampleCount
             </summary>
         </member>