decoder_api: removed decoder_clear()

Call ob_clear() in decoder_command_finished() instead of implementing
that call in every decoder plugin.

src/decoder/audiofile_plugin.c

@@ -92,7 +92,6 @@ static int audiofile_decode(struct decoder * decoder, char *path)
 
 	do {
 		if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
-			decoder_clear(decoder);
 			current = decoder_seek_where(decoder) *
 				audio_format.sample_rate;
 			afSeekFrame(af_fp, AF_DEFAULT_TRACK, current);

src/decoder/ffmpeg_plugin.c

@@ -271,7 +271,6 @@ static int ffmpeg_decode_internal(BasePtrs *base)
 		if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
 
 			DEBUG("seek\n");
-			decoder_clear(decoder);
 			current = decoder_seek_where(decoder) * AV_TIME_BASE;
 
 			if (av_seek_frame(pFormatCtx, -1, current , 0) < 0) {

src/decoder/flac_plugin.c

@@ -349,7 +349,6 @@ flac_decode_internal(struct decoder * decoder, struct input_stream *inStream,
 			FLAC__uint64 sampleToSeek = decoder_seek_where(decoder) *
 			    data.audio_format.sample_rate + 0.5;
 			if (flac_seek_absolute(flacDec, sampleToSeek)) {
-				decoder_clear(decoder);
 				data.time = ((float)sampleToSeek) /
 				    data.audio_format.sample_rate;
 				data.position = 0;

src/decoder/mp3_plugin.c

@@ -1018,7 +1018,6 @@ mp3_read(struct mp3_data *data, ReplayGainInfo **replay_gain_info_r)
 					      decoder_seek_where(decoder));
 			if (j < data->highest_frame) {
 				if (mp3_seek(data, data->frame_offsets[j])) {
-					decoder_clear(decoder);
 					data->current_frame = j;
 					decoder_command_finished(decoder);
 				} else
@@ -1026,7 +1025,6 @@ mp3_read(struct mp3_data *data, ReplayGainInfo **replay_gain_info_r)
 			} else {
 				data->seek_where = decoder_seek_where(decoder);
 				data->mute_frame = MUTEFRAME_SEEK;
-				decoder_clear(decoder);
 				decoder_command_finished(decoder);
 			}
 		}
@@ -1130,10 +1128,8 @@ mp3_decode(struct decoder *decoder, struct input_stream *input_stream)
 		freeReplayGainInfo(replay_gain_info);
 
 	if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK &&
-	    data.mute_frame == MUTEFRAME_SEEK) {
+	    data.mute_frame == MUTEFRAME_SEEK)
-		decoder_clear(decoder);
 		decoder_command_finished(decoder);
-	}
 
 	decoder_flush(decoder);
 	mp3_data_finish(&data);

src/decoder/mp4_plugin.c

@@ -224,7 +224,6 @@ mp4_decode(struct decoder *mpd_decoder, struct input_stream *inStream)
 
 		if (seeking && seekPositionFound) {
 			seekPositionFound = false;
-			decoder_clear(mpd_decoder);
 			seeking = 0;
 			decoder_command_finished(mpd_decoder);
 		}
@@ -296,10 +295,9 @@ mp4_decode(struct decoder *mpd_decoder, struct input_stream *inStream)
 	if (!initialized)
 		return -1;
 
-	if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK && seeking) {
+	if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK && seeking)
-		decoder_clear(mpd_decoder);
 		decoder_command_finished(mpd_decoder);
-	}
+
 	decoder_flush(mpd_decoder);
 
 	return 0;

src/decoder/mpc_plugin.c

@@ -168,7 +168,6 @@ mpc_decode(struct decoder *mpd_decoder, struct input_stream *inStream)
 			samplePos = decoder_seek_where(mpd_decoder) *
 				audio_format.sample_rate;
 			if (mpc_decoder_seek_sample(&decoder, samplePos)) {
-				decoder_clear(mpd_decoder);
 				s16 = (int16_t *) chunk;
 				chunkpos = 0;
 				decoder_command_finished(mpd_decoder);

src/decoder/oggvorbis_plugin.c

@@ -261,7 +261,6 @@ oggvorbis_decode(struct decoder *decoder, struct input_stream *inStream)
 		if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
 			double seek_where = decoder_seek_where(decoder);
 			if (0 == ov_time_seek_page(&vf, seek_where)) {
-				decoder_clear(decoder);
 				chunkpos = 0;
 				decoder_command_finished(decoder);
 			} else

src/decoder/wavpack_plugin.c

@@ -174,8 +174,6 @@ static void wavpack_decode(struct decoder * decoder,
 			if (canseek) {
 				int where;
 
-				decoder_clear(decoder);
-
 				where = decoder_seek_where(decoder) *
 					audio_format.sample_rate;
 				if (WavpackSeekSample(wpc, where)) {

src/decoder_api.c

@@ -77,6 +77,10 @@ void decoder_command_finished(mpd_unused struct decoder * decoder)
 	assert(dc.command != DECODE_COMMAND_SEEK ||
 	       dc.seekError || decoder->seeking);
 
+	if (dc.command == DECODE_COMMAND_SEEK)
+		/* delete frames from the old song position */
+		ob_clear();
+
 	dc.command = DECODE_COMMAND_NONE;
 	notify_signal(&pc.notify);
 }
@@ -209,8 +213,3 @@ void decoder_flush(mpd_unused struct decoder *decoder)
 {
 	ob_flush();
 }
-
-void decoder_clear(mpd_unused struct decoder *decoder)
-{
-	ob_clear();
-}

src/decoder_api.h

@@ -161,6 +161,4 @@ decoder_data(struct decoder *decoder,
 
 void decoder_flush(struct decoder *decoder);
 
-void decoder_clear(struct decoder *decoder);
-
 #endif