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fifo: K&R formatting cosmetics

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This commit is contained in:
Luca Barbato 2013-07-06 12:05:27 +02:00
parent 4e7f0b082d
commit 73142e7533
1 changed files with 28 additions and 24 deletions
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52
libavutil/fifo.c
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@ -24,11 +24,11 @@
AVFifoBuffer *av_fifo_alloc(unsigned int size)
{
AVFifoBuffer *f= av_mallocz(sizeof(AVFifoBuffer));
if(!f)
AVFifoBuffer *f = av_mallocz(sizeof(AVFifoBuffer));
if (!f)
return NULL;
f->buffer = av_malloc(size);
f->end = f->buffer + size;
f->end = f->buffer + size;
av_fifo_reset(f);
if (!f->buffer)
av_freep(&f);
@ -37,7 +37,7 @@ AVFifoBuffer *av_fifo_alloc(unsigned int size)
void av_fifo_free(AVFifoBuffer *f)
{
if(f){
if (f) {
av_free(f->buffer);
av_free(f);
}
@ -59,12 +59,13 @@ int av_fifo_space(AVFifoBuffer *f)
return f->end - f->buffer - av_fifo_size(f);
}
int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size) {
unsigned int old_size= f->end - f->buffer;
int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size)
{
unsigned int old_size = f->end - f->buffer;
if(old_size < new_size){
int len= av_fifo_size(f);
AVFifoBuffer *f2= av_fifo_alloc(new_size);
if (old_size < new_size) {
int len = av_fifo_size(f);
AVFifoBuffer *f2 = av_fifo_alloc(new_size);
if (!f2)
return -1;
@ -72,45 +73,48 @@ int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size) {
f2->wptr += len;
f2->wndx += len;
av_free(f->buffer);
*f= *f2;
*f = *f2;
av_free(f2);
}
return 0;
}
// src must NOT be const as it can be a context for func that may need updating (like a pointer or byte counter)
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int))
/* src must NOT be const as it can be a context for func that may need
* updating (like a pointer or byte counter) */
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size,
int (*func)(void *, void *, int))
{
int total = size;
do {
int len = FFMIN(f->end - f->wptr, size);
if(func) {
if(func(src, f->wptr, len) <= 0)
if (func) {
if (func(src, f->wptr, len) <= 0)
break;
} else {
memcpy(f->wptr, src, len);
src = (uint8_t*)src + len;
src = (uint8_t *)src + len;
}
// Write memory barrier needed for SMP here in theory
f->wptr += len;
if (f->wptr >= f->end)
f->wptr = f->buffer;
f->wndx += len;
size -= len;
size -= len;
} while (size > 0);
return total - size;
}
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void (*func)(void*, void*, int))
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size,
void (*func)(void *, void *, int))
{
// Read memory barrier needed for SMP here in theory
do {
int len = FFMIN(f->end - f->rptr, buf_size);
if(func) func(dest, f->rptr, len);
else{
if (func)
func(dest, f->rptr, len);
else {
memcpy(dest, f->rptr, len);
dest = (uint8_t*)dest + len;
dest = (uint8_t *)dest + len;
}
// memory barrier needed for SMP here in theory
av_fifo_drain(f, len);
@ -141,9 +145,9 @@ int main(void)
av_fifo_generic_write(fifo, &i, sizeof(int), NULL);
/* peek at FIFO */
n = av_fifo_size(fifo)/sizeof(int);
for (i = -n+1; i < n; i++) {
int *v = (int *)av_fifo_peek2(fifo, i*sizeof(int));
n = av_fifo_size(fifo) / sizeof(int);
for (i = -n + 1; i < n; i++) {
int *v = (int *)av_fifo_peek2(fifo, i * sizeof(int));
printf("%d: %d\n", i, *v);
}
printf("\n");