Add NAL unit start code in csd0/csd1 test data

The actual csd data contains NAL units so it should always start with
a NAL unit start code (00 00 00 01).
This issue was not caught before because in the code there was no
validation to check whether its a valid NAL unit.

PiperOrigin-RevId: 524849867

libraries/test_data/src/test/assets/muxerdumps/mp4_with_0_orientation.mp4.dump

@@ -12,13 +12,13 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_180_orientation.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     rotationDegrees = 180
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_270_orientation.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     rotationDegrees = 270
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_90_orientation.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     rotationDegrees = 90
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_different_tracks_offset.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     frameRate = 20000.0
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 1
@@ -34,14 +34,14 @@ track 1:
   format 0:
     id = 2
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     frameRate = 10000.0
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 1

libraries/test_data/src/test/assets/muxerdumps/mp4_with_float_metadata.mp4.dump

@@ -2,7 +2,7 @@ ftyp (28 bytes):
   Data = length 20, hash EF896440
 mdat (71 bytes):
   Data = length 55, hash 6B19F4A7
-moov (764 bytes):
+moov (772 bytes):
   mvhd (108 bytes):
     Data = length 100, hash A5ADE288
   meta (114 bytes):
@@ -12,22 +12,22 @@ moov (764 bytes):
       Data = length 29, hash 45F2DCDF
     ilst (36 bytes):
       Data = length 28, hash 2BFD5C32
-  trak (534 bytes):
+  trak (542 bytes):
     tkhd (92 bytes):
       Data = length 84, hash 8893F5BB
-    mdia (434 bytes):
+    mdia (442 bytes):
       mdhd (32 bytes):
         Data = length 24, hash 50217AD
       hdlr (44 bytes):
         Data = length 36, hash A0852FF2
-      minf (350 bytes):
+      minf (358 bytes):
         vmhd (20 bytes):
           Data = length 12, hash EE830681
         dinf (36 bytes):
           Data = length 28, hash D535436B
-        stbl (286 bytes):
+        stbl (294 bytes):
-          stsd (158 bytes):
+          stsd (166 bytes):
-            Data = length 150, hash 2AD095C5
+            Data = length 158, hash B2A35483
           stts (24 bytes):
             Data = length 16, hash E4FC6483
           stsz (24 bytes):

libraries/test_data/src/test/assets/muxerdumps/mp4_with_frame_rate.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     metadata = entries=[mdta: key=com.android.capture.fps, value=42f00000]
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_location.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     metadata = entries=[xyz: latitude=33.0, longitude=-120.0]
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_null_location.mp4.dump

@@ -12,13 +12,13 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 536870913

libraries/test_data/src/test/assets/muxerdumps/mp4_with_same_tracks_offset.mp4.dump

@@ -12,14 +12,14 @@ track 0:
   format 0:
     id = 1
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     frameRate = 20000.0
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 1
@@ -34,14 +34,14 @@ track 1:
   format 0:
     id = 2
     sampleMimeType = video/avc
-    codecs = avc1.9B2BF3
+    codecs = avc1.F4000A
     maxInputSize = 85
     width = 12
     height = 10
     frameRate = 10000.0
     initializationData:
-      data = length 24, hash 7F12E259
+      data = length 28, hash 410B510
-      data = length 5, hash 1B4D906
+      data = length 9, hash FBADD682
   sample 0:
     time = 0
     flags = 1

libraries/test_data/src/test/assets/muxerdumps/mp4_with_string_metadata.mp4.dump

@@ -2,7 +2,7 @@ ftyp (28 bytes):
   Data = length 20, hash EF896440
 mdat (71 bytes):
   Data = length 55, hash 6B19F4A7
-moov (778 bytes):
+moov (786 bytes):
   mvhd (108 bytes):
     Data = length 100, hash A5ADE288
   meta (128 bytes):
@@ -12,22 +12,22 @@ moov (778 bytes):
       Data = length 29, hash 45F2DCDF
     ilst (50 bytes):
       Data = length 42, hash F4AA183B
-  trak (534 bytes):
+  trak (542 bytes):
     tkhd (92 bytes):
       Data = length 84, hash 8893F5BB
-    mdia (434 bytes):
+    mdia (442 bytes):
       mdhd (32 bytes):
         Data = length 24, hash 50217AD
       hdlr (44 bytes):
         Data = length 36, hash A0852FF2
-      minf (350 bytes):
+      minf (358 bytes):
         vmhd (20 bytes):
           Data = length 12, hash EE830681
         dinf (36 bytes):
           Data = length 28, hash D535436B
-        stbl (286 bytes):
+        stbl (294 bytes):
-          stsd (158 bytes):
+          stsd (166 bytes):
-            Data = length 150, hash 2AD095C5
+            Data = length 158, hash B2A35483
           stts (24 bytes):
             Data = length 16, hash E4FC6483
           stsz (24 bytes):

libraries/test_data/src/test/assets/muxerdumps/mp4_with_xmp.mp4.dump

@@ -2,25 +2,25 @@ ftyp (28 bytes):
   Data = length 20, hash EF896440
 mdat (71 bytes):
   Data = length 55, hash 6B19F4A7
-moov (650 bytes):
+moov (658 bytes):
   mvhd (108 bytes):
     Data = length 100, hash A5ADE288
-  trak (534 bytes):
+  trak (542 bytes):
     tkhd (92 bytes):
       Data = length 84, hash 8893F5BB
-    mdia (434 bytes):
+    mdia (442 bytes):
       mdhd (32 bytes):
         Data = length 24, hash 50217AD
       hdlr (44 bytes):
         Data = length 36, hash A0852FF2
-      minf (350 bytes):
+      minf (358 bytes):
         vmhd (20 bytes):
           Data = length 12, hash EE830681
         dinf (36 bytes):
           Data = length 28, hash D535436B
-        stbl (286 bytes):
+        stbl (294 bytes):
-          stsd (158 bytes):
+          stsd (166 bytes):
-            Data = length 150, hash 2AD095C5
+            Data = length 158, hash B2A35483
           stts (24 bytes):
             Data = length 16, hash E4FC6483
           stsz (24 bytes):