mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-03 09:01:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

oss output works

Browse source 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@15 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-06-15 00:29:01 +00:00
parent bfcde99a8f
commit 1a5060720d
12 changed files with 207 additions and 100 deletions
Download patch file Download diff file Expand all files Collapse all files

30
src/memblockq.c
View file

@ -1,3 +1,4 @@
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
@ -14,9 +15,10 @@ struct memblockq {
size_t total_length;
size_t maxlength;
size_t base;
size_t prebuf;
};
struct memblockq* memblockq_new(size_t maxlength, size_t base) {
struct memblockq* memblockq_new(size_t maxlength, size_t base, size_t prebuf) {
struct memblockq* bq;
assert(maxlength && base);
@ -27,6 +29,11 @@ struct memblockq* memblockq_new(size_t maxlength, size_t base) {
bq->total_length = 0;
bq->base = base;
bq->maxlength = ((maxlength+base-1)/base)*base;
bq->prebuf = prebuf == (size_t) -1 ? bq->maxlength/2 : prebuf;
if (bq->prebuf > bq->maxlength)
bq->prebuf = bq->maxlength;
assert(bq->maxlength >= base);
return bq;
}
@ -72,9 +79,11 @@ void memblockq_push(struct memblockq* bq, struct memchunk *chunk, size_t delta)
int memblockq_peek(struct memblockq* bq, struct memchunk *chunk) {
assert(bq && chunk);
if (!bq->blocks)
if (!bq->blocks || bq->total_length < bq->prebuf)
return -1;
bq->prebuf = 0;
*chunk = bq->blocks->chunk;
memblock_ref(chunk->memblock);
return 0;
@ -85,9 +94,11 @@ int memblockq_pop(struct memblockq* bq, struct memchunk *chunk) {
assert(bq && chunk);
if (!bq->blocks)
if (!bq->blocks || bq->total_length < bq->prebuf)
return -1;
bq->prebuf = 0;
q = bq->blocks;
bq->blocks = bq->blocks->next;
@ -138,6 +149,8 @@ void memblockq_shorten(struct memblockq *bq, size_t length) {
if (bq->total_length <= length)
return;
fprintf(stderr, "Warning! memblockq_shorten()\n");
l = bq->total_length - length;
l /= bq->base;
l *= bq->base;
@ -151,8 +164,15 @@ void memblockq_empty(struct memblockq *bq) {
memblockq_shorten(bq, 0);
}
int memblockq_is_empty(struct memblockq *bq) {
int memblockq_is_readable(struct memblockq *bq) {
assert(bq);
return bq->total_length < bq->base;
return bq->total_length >= bq->prebuf;
}
int memblockq_is_writable(struct memblockq *bq, size_t length) {
assert(bq);
assert(length <= bq->maxlength);
return bq->total_length + length <= bq->maxlength;
}