CodecParameters: added some getters & setters

Not complete, just most often used by code for now. Other still
accessible via CodecParametersView::raw()->XXX

Author: h4tr3d

src/codecparameters.cpp

@@ -100,6 +100,60 @@ int CodecParametersView::getAudioFrameDuration(int frame_bytes) const
     return av_get_audio_frame_duration2(const_cast<AVCodecParameters*>(m_raw), frame_bytes);
 }
 
+AVMediaType CodecParametersView::codecType() const
+{
+    return m_raw ? m_raw->codec_type : AVMEDIA_TYPE_UNKNOWN;
+}
+
+void CodecParametersView::codecType(AVMediaType codec_type)
+{
+    if (m_raw)
+        m_raw->codec_type = codec_type;
+}
+
+
+AVMediaType CodecParametersView::mediaType() const
+{
+    return codecType();
+}
+
+void CodecParametersView::mediaType(AVMediaType media_type)
+{
+    codecType(media_type);
+}
+
+
+AVCodecID CodecParametersView::codecId() const
+{
+    return m_raw ? m_raw->codec_id : AV_CODEC_ID_NONE;
+}
+
+void CodecParametersView::codecId(AVCodecID codec_id)
+{
+    if (m_raw)
+        m_raw->codec_id = codec_id;
+}
+
+Codec CodecParametersView::encodingCodec() const
+{
+    return m_raw ? findEncodingCodec(m_raw->codec_id) : Codec();
+}
+
+Codec CodecParametersView::decodingCodec() const
+{
+    return m_raw ? findDecodingCodec(m_raw->codec_id) : Codec();
+}
+
+uint32_t CodecParametersView::codecTag() const
+{
+    return m_raw ? m_raw->codec_tag : 0u;
+}
+
+void CodecParametersView::codecTag(uint32_t codec_tag)
+{
+    if (m_raw)
+        m_raw->codec_tag = codec_tag;
+}
 
 
 CodecParameters::CodecParameters()

src/codecparameters.h

@@ -3,6 +3,7 @@
 #include "averror.h"
 #include "ffmpeg.h"
 #include "avutils.h"
+#include "codec.h"
 
 extern "C" {
 #include <libavcodec/codec_par.h>
@@ -29,6 +30,25 @@ class CodecParametersView : public FFWrapperPtr<AVCodecParameters>
     void copyTo(class CodecContext2& dst, OptionalErrorCode ec = throws()) const;
 
     int getAudioFrameDuration(int frame_bytes) const;
+
+    // Getters & Setters
+
+    AVMediaType  codecType() const;
+    void         codecType(AVMediaType codec_type);
+
+    AVMediaType  mediaType() const;
+    void         mediaType(AVMediaType media_type);
+
+    AVCodecID    codecId() const;
+    void         codecId(AVCodecID codec_id);
+
+    Codec        encodingCodec() const;
+    Codec        decodingCodec() const;
+
+    uint32_t     codecTag() const;
+    void         codecTag(uint32_t codec_tag);
+
+    // TBD
 };
 
 class CodecParameters : public CodecParametersView, public noncopyable