From cfd55b29bde6db1a90f81423e298378a7fd5b618 Mon Sep 17 00:00:00 2001
From: Laszlo Ashin <kodest@gmail.com>
Date: Sat, 8 Nov 2008 13:09:07 +0100
Subject: wavpack: wrapper for converting void* to struct wavpack_input*
A new function has been added to do a cast and a little check in the
wavpack-mpd input stream wrapper.
---
src/decoder/wavpack_plugin.c | 33 ++++++++++++++++++++-------------
1 file changed, 20 insertions(+), 13 deletions(-)
(limited to 'src')
diff --git a/src/decoder/wavpack_plugin.c b/src/decoder/wavpack_plugin.c
index fa72a4ce7..40eca3972 100644
--- a/src/decoder/wavpack_plugin.c
+++ b/src/decoder/wavpack_plugin.c
@@ -346,16 +346,25 @@ struct wavpack_input {
int last_byte;
};
+/**
+ * Little wrapper for struct wavpack_input to cast from void *.
+ */
+static struct wavpack_input *
+wpin(void *id)
+{
+ assert(id);
+ return id;
+}
+
static int32_t
wavpack_input_read_bytes(void *id, void *data, int32_t bcount)
{
- struct wavpack_input *isp = (struct wavpack_input *)id;
uint8_t *buf = (uint8_t *)data;
int32_t i = 0;
- if (isp->last_byte != EOF) {
- *buf++ = isp->last_byte;
- isp->last_byte = EOF;
+ if (wpin(id)->last_byte != EOF) {
+ *buf++ = wpin(id)->last_byte;
+ wpin(id)->last_byte = EOF;
--bcount;
++i;
}
@@ -363,7 +372,7 @@ wavpack_input_read_bytes(void *id, void *data, int32_t bcount)
/* wavpack fails if we return a partial read, so we just wait
until the buffer is full */
while (bcount > 0) {
- size_t nbytes = decoder_read(isp->decoder, isp->is,
+ size_t nbytes = decoder_read(wpin(id)->decoder, wpin(id)->is,
buf, bcount);
if (nbytes == 0) {
/* EOF, error or a decoder command */
@@ -381,40 +390,38 @@ wavpack_input_read_bytes(void *id, void *data, int32_t bcount)
static uint32_t
wavpack_input_get_pos(void *id)
{
- return ((struct wavpack_input *)id)->is->offset;
+ return wpin(id)->is->offset;
}
static int
wavpack_input_set_pos_abs(void *id, uint32_t pos)
{
- return input_stream_seek(((struct wavpack_input *)id)->is, pos, SEEK_SET)
- ? 0 : -1;
+ return input_stream_seek(wpin(id)->is, pos, SEEK_SET) ? 0 : -1;
}
static int
wavpack_input_set_pos_rel(void *id, int32_t delta, int mode)
{
- return input_stream_seek(((struct wavpack_input *)id)->is, delta, mode)
- ? 0 : -1;
+ return input_stream_seek(wpin(id)->is, delta, mode) ? 0 : -1;
}
static int
wavpack_input_push_back_byte(void *id, int c)
{
- ((struct wavpack_input *)id)->last_byte = c;
+ wpin(id)->last_byte = c;
return 1;
}
static uint32_t
wavpack_input_get_length(void *id)
{
- return ((struct wavpack_input *)id)->is->size;
+ return wpin(id)->is->size;
}
static int
wavpack_input_can_seek(void *id)
{
- return ((struct wavpack_input *)id)->is->seekable;
+ return wpin(id)->is->seekable;
}
static WavpackStreamReader mpd_is_reader = {
--
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