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aac: moved code to aac_buffer_shift()

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Shifting from the buffer queue is a common operation, and should be
provided as a separate function.  Move code to aac_buffer_shift() and
add a bunch of assertions.
This commit is contained in:
Max Kellermann 2008-08-26 08:27:11 +02:00
parent a3cc928c71
commit b7ad3e4121
1 changed files with 14 additions and 7 deletions
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21
src/inputPlugins/aac_plugin.c
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@ -37,6 +37,19 @@ typedef struct {
int atEof;
} AacBuffer;
static void aac_buffer_shift(AacBuffer * b, size_t length)
{
assert(length >= b->bytesConsumed);
assert(length <= b->bytesConsumed + b->bytesIntoBuffer);
memmove(b->buffer, b->buffer + length,
b->bytesConsumed + b->bytesIntoBuffer - length);
length -= b->bytesConsumed;
b->bytesConsumed = 0;
b->bytesIntoBuffer -= length;
}
static void fillAacBuffer(AacBuffer * b)
{
size_t bread;
@ -45,13 +58,7 @@ static void fillAacBuffer(AacBuffer * b)
/* buffer already full */
return;
if (b->bytesConsumed > 0 && b->bytesIntoBuffer > 0) {
memmove((void *)b->buffer, (void *)(b->buffer +
b->bytesConsumed),
b->bytesIntoBuffer);
}
b->bytesConsumed = 0;
aac_buffer_shift(b, b->bytesConsumed);
if (!b->atEof) {
size_t rest = FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS -