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authorMax Kellermann <max@duempel.org>2009-03-06 00:42:01 +0100
committerMax Kellermann <max@duempel.org>2009-03-06 00:42:01 +0100
commit000b2d4f3a9c4f761ab918aaff4705621bb8559f (patch)
tree5009a5548c99155e00b4b14d52f50728a337960f /src/decoder_internal.c
parent10be8a8714b49bec5e6f869975962cbc26cebe61 (diff)
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music_pipe: added music_pipe_push()
Added music_pipe_allocate(), music_pipe_push() and music_pipe_cancel(). Those functions allow the caller (decoder thread in this case) to do its own chunk management. The functions music_pipe_flush() and music_pipe_tag() can now be removed.
Diffstat (limited to 'src/decoder_internal.c')
-rw-r--r--src/decoder_internal.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/src/decoder_internal.c b/src/decoder_internal.c
new file mode 100644
index 000000000..93ad80e5e
--- /dev/null
+++ b/src/decoder_internal.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "decoder_internal.h"
+#include "decoder_control.h"
+#include "player_control.h"
+#include "pipe.h"
+#include "input_stream.h"
+
+#include <assert.h>
+
+/**
+ * All chunks are full of decoded data; wait for the player to free
+ * one.
+ */
+static enum decoder_command
+need_chunks(struct input_stream *is, bool do_wait)
+{
+ if (dc.command == DECODE_COMMAND_STOP ||
+ dc.command == DECODE_COMMAND_SEEK)
+ return dc.command;
+
+ if ((is == NULL || input_stream_buffer(is) <= 0) && do_wait) {
+ notify_wait(&dc.notify);
+ notify_signal(&pc.notify);
+
+ return dc.command;
+ }
+
+ return DECODE_COMMAND_NONE;
+}
+
+struct music_chunk *
+decoder_get_chunk(struct decoder *decoder)
+{
+ assert(decoder != NULL);
+
+ if (decoder->chunk != NULL)
+ return decoder->chunk;
+
+ decoder->chunk = music_pipe_allocate();
+ return decoder->chunk;
+}
+
+enum decoder_command
+decoder_flush_chunk(struct decoder *decoder, struct input_stream *is)
+{
+ bool success;
+ enum decoder_command cmd;
+
+ assert(decoder != NULL);
+ assert(decoder->chunk != NULL);
+
+ while (true) {
+ success = music_pipe_push(decoder->chunk);
+ if (success) {
+ decoder->chunk = NULL;
+ return DECODE_COMMAND_NONE;
+ }
+
+ cmd = need_chunks(is, true);
+ if (cmd != DECODE_COMMAND_NONE)
+ return cmd;
+ }
+}