AvFormatDecoder: Add a GetSubHeader method.

This is the first of the SSA support patches. Refs #9294
MythTV · May 3, 2011 · 4b48823 · 4b48823
1 parent fbe0feb
commit 4b48823
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diff --git a/mythtv/libs/libmythtv/avformatdecoder.cpp b/mythtv/libs/libmythtv/avformatdecoder.cpp
@@ -3365,6 +3365,19 @@ QString AvFormatDecoder::GetXDS(const QString &key) const
     return ccd608->GetXDS(key);
 }
 
+QByteArray AvFormatDecoder::GetSubHeader(uint trackNo) const
+{
+    if (trackNo >= tracks[kTrackTypeSubtitle].size())
+        return QByteArray();
+
+    int index = tracks[kTrackTypeSubtitle][trackNo].av_stream_index;
+    if (!ic->streams[index]->codec)
+        return QByteArray();
+
+    return QByteArray((char *)ic->streams[index]->codec->subtitle_header,
+                      ic->streams[index]->codec->subtitle_header_size);
+}
+
 bool AvFormatDecoder::SetAudioByComponentTag(int tag)
 {
     for (uint i = 0; i < tracks[kTrackTypeAudio].size(); i++)

diff --git a/mythtv/libs/libmythtv/avformatdecoder.h b/mythtv/libs/libmythtv/avformatdecoder.h
@@ -168,6 +168,7 @@ class AvFormatDecoder : public DecoderBase
     virtual int  GetTeletextDecoderType(void) const;
 
     virtual QString GetXDS(const QString&) const;
+    virtual QByteArray GetSubHeader(uint trackNo) const;
 
     // MHEG stuff
     virtual bool SetAudioByComponentTag(int tag);

diff --git a/mythtv/libs/libmythtv/decoderbase.h b/mythtv/libs/libmythtv/decoderbase.h
@@ -194,6 +194,7 @@ class DecoderBase
     virtual int  GetTeletextDecoderType(void) const { return -1; }
 
     virtual QString GetXDS(const QString&) const { return QString::null; }
+    virtual QByteArray GetSubHeader(uint trackNo) const { return QByteArray(); }
 
     // MHEG/MHI stuff
     virtual bool SetAudioByComponentTag(int) { return false; }