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authorMax Kellermann <max@duempel.org>2008-11-02 16:58:49 +0100
committerMax Kellermann <max@duempel.org>2008-11-02 16:58:49 +0100
commitfcc11bc9d85854f9b0dab74dd0ce7f76c412f4a1 (patch)
tree60266cfbdf397fb8162e2ae202872e1bd4067b6a /src
parent85b6ff7b594775276dcec85e8caf89d245476e47 (diff)
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music_pipe: added functions chunk_init() and chunk_free()
These two functions will care about memory allocation and deallocation in the future.
Diffstat (limited to '')
-rw-r--r--src/pipe.c48
1 files changed, 38 insertions, 10 deletions
diff --git a/src/pipe.c b/src/pipe.c
index 9d781961a..d94bac219 100644
--- a/src/pipe.c
+++ b/src/pipe.c
@@ -26,6 +26,18 @@
struct music_pipe music_pipe;
+static void
+music_chunk_init(struct music_chunk *chunk)
+{
+ chunk->length = 0;
+}
+
+static void
+music_chunk_free(struct music_chunk *chunk)
+{
+ (void)chunk;
+}
+
void
music_pipe_init(unsigned int size, struct notify *notify)
{
@@ -37,19 +49,16 @@ music_pipe_init(unsigned int size, struct notify *notify)
music_pipe.end = 0;
music_pipe.lazy = false;
music_pipe.notify = notify;
- music_pipe.chunks[0].length = 0;
+ music_chunk_init(&music_pipe.chunks[0]);
}
void music_pipe_free(void)
{
assert(music_pipe.chunks != NULL);
- g_free(music_pipe.chunks);
-}
-void music_pipe_clear(void)
-{
- music_pipe.end = music_pipe.begin;
- music_pipe.chunks[music_pipe.end].length = 0;
+ music_pipe_clear();
+
+ g_free(music_pipe.chunks);
}
/** return the index of the chunk after i */
@@ -61,6 +70,19 @@ static inline unsigned successor(unsigned i)
return i == music_pipe.num_chunks ? 0 : i;
}
+void music_pipe_clear(void)
+{
+ unsigned i;
+
+ for (i = music_pipe.begin; i != music_pipe.end; i = successor(i))
+ music_chunk_free(&music_pipe.chunks[i]);
+
+ music_chunk_free(&music_pipe.chunks[music_pipe.end]);
+
+ music_pipe.end = music_pipe.begin;
+ music_chunk_init(&music_pipe.chunks[music_pipe.end]);
+}
+
/**
* Mark the tail chunk as "full" and wake up the player if is waiting
* for the decoder.
@@ -73,7 +95,8 @@ static void output_buffer_expand(unsigned i)
assert(i != music_pipe.end);
music_pipe.end = i;
- music_pipe.chunks[i].length = 0;
+ music_chunk_init(&music_pipe.chunks[i]);
+
if (was_empty)
/* if the buffer was empty, the player thread might be
waiting for us; wake it up now that another decoded
@@ -107,6 +130,8 @@ void music_pipe_shift(void)
assert(music_pipe.begin != music_pipe.end);
assert(music_pipe.begin < music_pipe.num_chunks);
+ music_chunk_free(&music_pipe.chunks[music_pipe.begin]);
+
music_pipe.begin = successor(music_pipe.begin);
}
@@ -241,6 +266,9 @@ size_t music_pipe_append(const void *data0, size_t datalen,
void music_pipe_skip(unsigned num)
{
int i = music_pipe_absolute(num);
- if (i >= 0)
- music_pipe.begin = i;
+ if (i < 0)
+ return;
+
+ while (music_pipe.begin != (unsigned)i)
+ music_pipe_shift();
}