decoder/ffmpeg: use AVIOContext instead of ByteIOContext

NEWS

 ver 0.16.7 (2011/??/??)
 * input:
   - ffmpeg: support libavformat 0.7
+* decoder:
+  - ffmpeg: support libavformat 0.7
 * output:
   - httpd: fix excessive buffering
   - openal: force 16 bit playback, as 8 bit doesn't work

src/decoder/ffmpeg_decoder_plugin.c

@@ -126,11 +126,19 @@ mpd_ffmpeg_stream_open(struct decoder *decoder, struct input_stream *input)
 	struct mpd_ffmpeg_stream *stream = g_new(struct mpd_ffmpeg_stream, 1);
 	stream->decoder = decoder;
 	stream->input = input;
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(52,101,0)
+	stream->io = avio_alloc_context(stream->buffer, sizeof(stream->buffer),
+					false, stream,
+					mpd_ffmpeg_stream_read, NULL,
+					input->seekable
+					? mpd_ffmpeg_stream_seek : NULL);
+#else
 	stream->io = av_alloc_put_byte(stream->buffer, sizeof(stream->buffer),
 				       false, stream,
 				       mpd_ffmpeg_stream_read, NULL,
 				       input->seekable
 				       ? mpd_ffmpeg_stream_seek : NULL);
+#endif
 	if (stream->io == NULL) {
 		g_free(stream);
 		return NULL;