diff -r 000000000000 -r 6474c204b198 content/media/encoder/fmp4_muxer/ISOTrackMetadata.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/encoder/fmp4_muxer/ISOTrackMetadata.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,104 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ISOTrackMetadata_h_
+#define ISOTrackMetadata_h_
+
+#include "TrackMetadataBase.h"
+
+namespace mozilla {
+
+class AACTrackMetadata : public AudioTrackMetadata {
+public:
+  // AudioTrackMetadata members
+  uint32_t GetAudioFrameDuration() MOZ_OVERRIDE { return mFrameDuration; }
+  uint32_t GetAudioFrameSize() MOZ_OVERRIDE { return mFrameSize; }
+  uint32_t GetAudioSampleRate() MOZ_OVERRIDE { return mSampleRate; }
+  uint32_t GetAudioChannels() MOZ_OVERRIDE { return mChannels; }
+
+  // TrackMetadataBase member
+  MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_AAC; }
+
+  // AACTrackMetadata members
+  AACTrackMetadata()
+    : mSampleRate(0)
+    , mFrameDuration(0)
+    , mFrameSize(0)
+    , mChannels(0) {
+    MOZ_COUNT_CTOR(AACTrackMetadata);
+  }
+  ~AACTrackMetadata() { MOZ_COUNT_DTOR(AACTrackMetadata); }
+
+  uint32_t mSampleRate;     // From 14496-3 table 1.16, it could be 7350 ~ 96000.
+  uint32_t mFrameDuration;  // Audio frame duration based on SampleRate.
+  uint32_t mFrameSize;      // Audio frame size, 0 is variant size.
+  uint32_t mChannels;       // Channel number, it should be 1 or 2.
+};
+
+// AVC clock rate is 90k Hz.
+#define AVC_CLOCK_RATE 90000
+
+class AVCTrackMetadata : public VideoTrackMetadata {
+public:
+  // VideoTrackMetadata members
+  uint32_t GetVideoHeight() MOZ_OVERRIDE { return mHeight; }
+  uint32_t GetVideoWidth() MOZ_OVERRIDE {return mWidth; }
+  uint32_t GetVideoDisplayHeight() MOZ_OVERRIDE { return mDisplayHeight; }
+  uint32_t GetVideoDisplayWidth() MOZ_OVERRIDE { return mDisplayWidth;  }
+  uint32_t GetVideoClockRate() MOZ_OVERRIDE { return AVC_CLOCK_RATE; }
+  uint32_t GetVideoFrameRate() MOZ_OVERRIDE { return mFrameRate; }
+
+  // TrackMetadataBase member
+  MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_AVC; }
+
+  // AVCTrackMetadata
+  AVCTrackMetadata()
+    : mHeight(0)
+    , mWidth(0)
+    , mDisplayHeight(0)
+    , mDisplayWidth(0)
+    , mFrameRate(0) {
+    MOZ_COUNT_CTOR(AVCTrackMetadata);
+  }
+  ~AVCTrackMetadata() { MOZ_COUNT_DTOR(AVCTrackMetadata); }
+
+  uint32_t mHeight;
+  uint32_t mWidth;
+  uint32_t mDisplayHeight;
+  uint32_t mDisplayWidth;
+  uint32_t mFrameRate;       // frames per second
+};
+
+
+// AMR sample rate is 8000 samples/s.
+#define AMR_SAMPLE_RATE 8000
+
+// Channel number is always 1.
+#define AMR_CHANNELS    1
+
+// AMR speech codec, 3GPP TS 26.071. Encoder and continer support AMR-NB only
+// currently.
+class AMRTrackMetadata : public AudioTrackMetadata {
+public:
+  // AudioTrackMetadata members
+  //
+  // The number of sample sets generates by encoder is variant. So the
+  // frame duration and frame size are both 0.
+  uint32_t GetAudioFrameDuration() MOZ_OVERRIDE { return 0; }
+  uint32_t GetAudioFrameSize() MOZ_OVERRIDE { return 0; }
+  uint32_t GetAudioSampleRate() MOZ_OVERRIDE { return AMR_SAMPLE_RATE; }
+  uint32_t GetAudioChannels() MOZ_OVERRIDE { return AMR_CHANNELS; }
+
+  // TrackMetadataBase member
+  MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_AMR; }
+
+  // AMRTrackMetadata members
+  AMRTrackMetadata() { MOZ_COUNT_CTOR(AMRTrackMetadata); }
+  ~AMRTrackMetadata() { MOZ_COUNT_DTOR(AMRTrackMetadata); }
+};
+
+}
+
+#endif // ISOTrackMetadata_h_