InputStream: "protect" attributes

src/decoder/plugins/FfmpegDecoderPlugin.cxx

@@ -121,12 +121,12 @@ mpd_ffmpeg_stream_seek(void *opaque, int64_t pos, int whence)
 	AvioStream *stream = (AvioStream *)opaque;
 
 	if (whence == AVSEEK_SIZE)
-		return stream->input.size;
+		return stream->input.GetSize();
 
 	if (!stream->input.LockSeek(pos, whence, IgnoreError()))
 		return -1;
 
-	return stream->input.offset;
+	return stream->input.GetOffset();
 }
 
 bool
@@ -135,7 +135,7 @@ AvioStream::Open()
 	io = avio_alloc_context(buffer, sizeof(buffer),
 				false, this,
 				mpd_ffmpeg_stream_read, nullptr,
-				input.seekable
+				input.IsSeekable()
 				? mpd_ffmpeg_stream_seek : nullptr);
 	return io != nullptr;
 }
@@ -481,7 +481,7 @@ ffmpeg_decode(Decoder &decoder, InputStream &input)
 		: 0;
 
 	decoder_initialized(decoder, audio_format,
-			    input.seekable, total_time);
+			    input.IsSeekable(), total_time);
 
 #if LIBAVUTIL_VERSION_MAJOR >= 53
 	AVFrame *frame = av_frame_alloc();

src/decoder/plugins/FlacCommon.cxx

@@ -137,7 +137,7 @@ flac_got_first_frame(struct flac_data *data, const FLAC__FrameHeader *header)
 	data->frame_size = data->audio_format.GetFrameSize();
 
 	decoder_initialized(data->decoder, data->audio_format,
-			    data->input_stream.seekable,
+			    data->input_stream.IsSeekable(),
 			    (float)data->total_frames /
 			    (float)data->audio_format.sample_rate);
 

src/decoder/plugins/FlacDecoderPlugin.cxx

@@ -145,13 +145,13 @@ flac_decoder_initialize(struct flac_data *data, FLAC__StreamDecoder *sd,
 	if (data->initialized) {
 		/* done */
 		decoder_initialized(data->decoder, data->audio_format,
-				    data->input_stream.seekable,
+				    data->input_stream.IsSeekable(),
 				    (float)data->total_frames /
 				    (float)data->audio_format.sample_rate);
 		return true;
 	}
 
-	if (data->input_stream.seekable)
+	if (data->input_stream.IsSeekable())
 		/* allow the workaround below only for nonseekable
 		   streams*/
 		return false;

src/decoder/plugins/FlacIOHandle.cxx

@@ -75,7 +75,7 @@ FlacIOTell(FLAC__IOHandle handle)
 {
 	InputStream *is = (InputStream *)handle;
 
-	return is->offset;
+	return is->GetOffset();
 }
 
 static int

src/decoder/plugins/FlacIOHandle.hxx

@@ -37,7 +37,7 @@ ToFlacIOHandle(InputStream &is)
 static inline const FLAC__IOCallbacks &
 GetFlacIOCallbacks(const InputStream &is)
 {
-	return is.seekable
+	return is.IsSeekable()
 		? flac_io_callbacks_seekable
 		: flac_io_callbacks;
 }

src/decoder/plugins/FlacInput.cxx

@@ -47,7 +47,7 @@ FlacInput::Read(FLAC__byte buffer[], size_t *bytes)
 FLAC__StreamDecoderSeekStatus
 FlacInput::Seek(FLAC__uint64 absolute_byte_offset)
 {
-	if (!input_stream.seekable)
+	if (!input_stream.IsSeekable())
 		return FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED;
 
 	::Error error;
@@ -62,20 +62,20 @@ FlacInput::Seek(FLAC__uint64 absolute_byte_offset)
 FLAC__StreamDecoderTellStatus
 FlacInput::Tell(FLAC__uint64 *absolute_byte_offset)
 {
-	if (!input_stream.seekable)
+	if (!input_stream.IsSeekable())
 		return FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED;
 
-	*absolute_byte_offset = (FLAC__uint64)input_stream.offset;
+	*absolute_byte_offset = (FLAC__uint64)input_stream.GetOffset();
 	return FLAC__STREAM_DECODER_TELL_STATUS_OK;
 }
 
 FLAC__StreamDecoderLengthStatus
 FlacInput::Length(FLAC__uint64 *stream_length)
 {
-	if (input_stream.size < 0)
+	if (!input_stream.KnownSize())
 		return FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED;
 
-	*stream_length = (FLAC__uint64)input_stream.size;
+	*stream_length = (FLAC__uint64)input_stream.GetSize();
 	return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
 }
 

src/decoder/plugins/OggFind.cxx

@@ -57,7 +57,7 @@ bool
 OggSeekFindEOS(OggSyncState &oy, ogg_stream_state &os, ogg_packet &packet,
 	       InputStream &is)
 {
-	if (is.size > 0 && is.size - is.offset < 65536)
+	if (is.KnownSize() && is.GetRest() < 65536)
 		return OggFindEOS(oy, os, packet);
 
 	if (!is.CheapSeeking())

src/decoder/plugins/OpusDecoderPlugin.cxx

@@ -185,7 +185,7 @@ LoadEOSPacket(InputStream &is, Decoder *decoder, int serialno,
 		   troubl */
 		return -1;
 
-	const auto old_offset = is.offset;
+	const auto old_offset = is.GetOffset();
 	if (old_offset < 0)
 		return -1;
 
@@ -332,16 +332,16 @@ bool
 MPDOpusDecoder::Seek(OggSyncState &oy, double where_s)
 {
 	assert(eos_granulepos > 0);
-	assert(input_stream.seekable);
-	assert(input_stream.size > 0);
-	assert(input_stream.offset >= 0);
+	assert(input_stream.IsSeekable());
+	assert(input_stream.KnownSize());
+	assert(input_stream.GetOffset() >= 0);
 
 	const ogg_int64_t where_granulepos(where_s * opus_sample_rate);
 
 	/* interpolate the file offset where we expect to find the
 	   given granule position */
 	/* TODO: implement binary search */
-	InputStream::offset_type offset(where_granulepos * input_stream.size
+	InputStream::offset_type offset(where_granulepos * input_stream.GetSize()
 					/ eos_granulepos);
 
 	if (!OggSeekPageAtOffset(oy, os, input_stream, offset, SEEK_SET))

src/decoder/plugins/VorbisDecoderPlugin.cxx

@@ -88,7 +88,7 @@ static long ogg_tell_cb(void *data)
 {
 	struct vorbis_input_stream *vis = (struct vorbis_input_stream *)data;
 
-	return (long)vis->input_stream->offset;
+	return (long)vis->input_stream->GetOffset();
 }
 
 static const ov_callbacks vorbis_is_callbacks = {

src/decoder/plugins/WavpackDecoderPlugin.cxx

@@ -377,7 +377,7 @@ wavpack_input_read_bytes(void *id, void *data, int32_t bcount)
 static uint32_t
 wavpack_input_get_pos(void *id)
 {
-	return wpin(id)->is->offset;
+	return wpin(id)->is->GetOffset();
 }
 
 static int
@@ -406,16 +406,16 @@ wavpack_input_push_back_byte(void *id, int c)
 static uint32_t
 wavpack_input_get_length(void *id)
 {
-	if (wpin(id)->is->size < 0)
+	if (!wpin(id)->is->KnownSize())
 		return 0;
 
-	return wpin(id)->is->size;
+	return wpin(id)->is->GetSize();
 }
 
 static int
 wavpack_input_can_seek(void *id)
 {
-	return wpin(id)->is->seekable;
+	return wpin(id)->is->IsSeekable();
 }
 
 static WavpackStreamReader mpd_is_reader = {
@@ -484,7 +484,7 @@ static void
 wavpack_streamdecode(Decoder &decoder, InputStream &is)
 {
 	int open_flags = OPEN_NORMALIZE;
-	bool can_seek = is.seekable;
+	bool can_seek = is.IsSeekable();
 
 	wavpack_input isp_wvc;
 	InputStream *is_wvc = wavpack_open_wvc(decoder, is.GetURI(),
@@ -492,7 +492,7 @@ wavpack_streamdecode(Decoder &decoder, InputStream &is)
 					       &isp_wvc);
 	if (is_wvc != nullptr) {
 		open_flags |= OPEN_WVC;
-		can_seek &= is_wvc->seekable;
+		can_seek &= is_wvc->IsSeekable();
 	}
 
 	if (!can_seek) {