diff options
Diffstat (limited to 'media/mp4/track_run_iterator.h')
-rw-r--r-- | media/mp4/track_run_iterator.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/media/mp4/track_run_iterator.h b/media/mp4/track_run_iterator.h index ddea39c..85cadce 100644 --- a/media/mp4/track_run_iterator.h +++ b/media/mp4/track_run_iterator.h @@ -11,12 +11,16 @@ #include "base/time.h" #include "media/base/media_export.h" #include "media/mp4/box_definitions.h" +#include "media/mp4/cenc.h" namespace media { + +class DecryptConfig; + namespace mp4 { using base::TimeDelta; -base::TimeDelta MEDIA_EXPORT TimeDeltaFromFrac(int64 numer, int64 denom); +base::TimeDelta MEDIA_EXPORT TimeDeltaFromRational(int64 numer, int64 denom); struct SampleInfo; struct TrackRunInfo; @@ -34,14 +38,23 @@ class MEDIA_EXPORT TrackRunIterator { bool Init(const MovieFragment& moof); // Returns true if the properties of the current run or sample are valid. - bool RunIsValid() const; - bool SampleIsValid() const; + bool IsRunValid() const; + bool IsSampleValid() const; // Advance the properties to refer to the next run or sample. Requires that // the current sample be valid. void AdvanceRun(); void AdvanceSample(); + // Returns true if this track run has auxiliary information and has not yet + // been cached. Only valid if IsRunValid(). + bool AuxInfoNeedsToBeCached(); + + // Caches the CENC data from the given buffer. |buf| must be a buffer starting + // at the offset given by cenc_offset(), with a |size| of at least + // cenc_size(). Returns true on success, false on error. + bool CacheAuxInfo(const uint8* buf, int size); + // Returns the maximum buffer location at which no data earlier in the stream // will be required in order to read the current or any subsequent sample. You // may clear all data up to this offset before reading the current sample @@ -52,15 +65,17 @@ class MEDIA_EXPORT TrackRunIterator { // Returns the minimum timestamp (or kInfiniteDuration if no runs present). TimeDelta GetMinDecodeTimestamp(); - // Property of the current run. Only valid if RunIsValid(). + // Property of the current run. Only valid if IsRunValid(). uint32 track_id() const; + int64 aux_info_offset() const; + int aux_info_size() const; bool is_encrypted() const; bool is_audio() const; // Only one is valid, based on the value of is_audio(). const AudioSampleEntry& audio_description() const; const VideoSampleEntry& video_description() const; - // Properties of the current sample. Only valid if SampleIsValid(). + // Properties of the current sample. Only valid if IsSampleValid(). int64 sample_offset() const; int sample_size() const; TimeDelta dts() const; @@ -68,8 +83,13 @@ class MEDIA_EXPORT TrackRunIterator { TimeDelta duration() const; bool is_keyframe() const; + // Only call when is_encrypted() is true and AuxInfoNeedsToBeCached() is + // false. Result is owned by caller. + scoped_ptr<DecryptConfig> GetDecryptConfig(); + private: void ResetRun(); + const TrackEncryption& track_encryption() const; const Movie* moov_; @@ -77,6 +97,8 @@ class MEDIA_EXPORT TrackRunIterator { std::vector<TrackRunInfo>::const_iterator run_itr_; std::vector<SampleInfo>::const_iterator sample_itr_; + std::vector<FrameCENCInfo> cenc_info_; + int64 sample_dts_; int64 sample_offset_; |