producer_avformat.c: optimize slightly the stream index bugfix and update the video...

git-svn-id: https://mlt.svn.sourceforge.net/svnroot/mlt/trunk/mlt@1207 d19143bc-622f-0410-bfdd-b5b2a6649095

diff --git a/src/modules/avformat/producer_avformat.c b/src/modules/avformat/producer_avformat.c
index a8d5480..bf3654f 100644 (file)
--- a/src/modules/avformat/producer_avformat.c
+++ b/src/modules/avformat/producer_avformat.c
@@ -705,10 +705,24 @@ static void producer_set_up_video( mlt_producer this, mlt_frame frame )
        if ( context && index >= (int) context->nb_streams )
        {
                for ( index = context->nb_streams - 1; index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO; --index );
+               mlt_properties_set_int( properties, "video_index", index );
        }
        if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
+       {
                index = -1;
-       mlt_properties_set_int( properties, "video_index", index );
+               mlt_properties_set_int( properties, "video_index", index );
+       }
+
+       // Update the video properties if the index changed
+       if ( index > -1 && index != mlt_properties_get_int( properties, "_video_index" ) )
+       {
+               // Fetch the width, height and aspect ratio
+               AVCodecContext *codec_context = context->streams[ index ]->codec;
+               mlt_properties_set_int( properties, "_video_index", index );
+               mlt_properties_set_int( properties, "width", codec_context->width );
+               mlt_properties_set_int( properties, "height", codec_context->height );
+               mlt_properties_set_double( properties, "aspect_ratio", av_q2d( codec_context->sample_aspect_ratio ) );
+       }
 
        // Get the frame properties
        mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
@@ -1076,10 +1090,13 @@ static void producer_set_up_audio( mlt_producer this, mlt_frame frame )
        if ( context && index >= (int) context->nb_streams )
        {
                for ( index = context->nb_streams - 1; index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO; --index );
+               mlt_properties_set_int( properties, "audio_index", index );
        }
        if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
+       {
                index = -1;
-       mlt_properties_set_int( properties, "audio_index", index );
+               mlt_properties_set_int( properties, "audio_index", index );
+       }
 
        // Deal with audio context
        if ( context != NULL && index > -1 )