avformat/rawdec: Make the raw packet size configurable

This allows testing parsers with a wider range of input packet sizes.
Which is important and usefull for regression testing, some of our
parsers in fact to not work if the packet size is changed from 1024

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/g722.c

@@ -46,6 +46,7 @@ static int g722_read_header(AVFormatContext *s)
     return 0;
 }
 
+FF_RAW_DEMUXER_CLASS(g722)
 AVInputFormat ff_g722_demuxer = {
     .name           = "g722",
     .long_name      = NULL_IF_CONFIG_SMALL("raw G.722"),
@@ -54,4 +55,5 @@ AVInputFormat ff_g722_demuxer = {
     .flags          = AVFMT_GENERIC_INDEX,
     .extensions     = "g722,722",
     .raw_codec_id   = AV_CODEC_ID_ADPCM_G722,
-};
+    .priv_data_size = sizeof(FFRawDemuxerContext),
+    .priv_class     = &g722_demuxer_class,};