Set Format.frameRate for single-frame MP4 tracks

Issue: androidx/media#1051
PiperOrigin-RevId: 613516802

libraries/extractor/src/main/java/androidx/media3/extractor/mp4/Mp4Extractor.java

@@ -631,7 +631,7 @@ public final class Mp4Extractor implements Extractor, SeekMap {
                       ? C.ROLE_FLAG_MAIN
                       : C.ROLE_FLAG_ALTERNATE));
         }
-        if (trackDurationUs > 0 && trackSampleTable.sampleCount > 1) {
+        if (trackDurationUs > 0 && trackSampleTable.sampleCount > 0) {
           float frameRate = trackSampleTable.sampleCount / (trackDurationUs / 1000000f);
           formatBuilder.setFrameRate(frameRate);
         }

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-2-hevc-tracks.jpg.0.dump

@@ -270,6 +270,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-2-hevc-tracks.jpg.1.dump

@@ -214,6 +214,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-2-hevc-tracks.jpg.2.dump

@@ -130,6 +130,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-2-hevc-tracks.jpg.3.dump

@@ -46,6 +46,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-jfif-segment-shortened.jpg.0.dump

@@ -16,6 +16,7 @@ track 0:
     maxInputSize = 3895
     width = 180
     height = 120
+    frameRate = 1.1534026
     pixelWidthHeightRatio = 0.5
     colorInfo:
       lumaBitdepth = 8

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-jfif-segment-shortened.jpg.1.dump

@@ -16,6 +16,7 @@ track 0:
     maxInputSize = 3895
     width = 180
     height = 120
+    frameRate = 1.1534026
     pixelWidthHeightRatio = 0.5
     colorInfo:
       lumaBitdepth = 8

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-jfif-segment-shortened.jpg.2.dump

@@ -16,6 +16,7 @@ track 0:
     maxInputSize = 3895
     width = 180
     height = 120
+    frameRate = 1.1534026
     pixelWidthHeightRatio = 0.5
     colorInfo:
       lumaBitdepth = 8

libraries/test_data/src/test/assets/extractordumps/jpeg/pixel-motion-photo-jfif-segment-shortened.jpg.3.dump

@@ -16,6 +16,7 @@ track 0:
     maxInputSize = 3895
     width = 180
     height = 120
+    frameRate = 1.1534026
     pixelWidthHeightRatio = 0.5
     colorInfo:
       lumaBitdepth = 8

libraries/test_data/src/test/assets/extractordumps/mp4/pixel-motion-photo-2-hevc-tracks.mp4.0.dump

@@ -269,6 +269,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/mp4/pixel-motion-photo-2-hevc-tracks.mp4.1.dump

@@ -213,6 +213,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/mp4/pixel-motion-photo-2-hevc-tracks.mp4.2.dump

@@ -129,6 +129,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/mp4/pixel-motion-photo-2-hevc-tracks.mp4.3.dump

@@ -45,6 +45,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1

libraries/test_data/src/test/assets/extractordumps/mp4/pixel-motion-photo-2-hevc-tracks.mp4.unknown_length.dump

@@ -269,6 +269,7 @@ track 1:
     maxInputSize = 151345
     width = 2048
     height = 1536
+    frameRate = 2.142245
     rotationDegrees = 90
     colorInfo:
       colorSpace = 1