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add resampling

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@45 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-07-03 00:19:17 +00:00
parent 13b35a2489
commit 741aa44ffc
26 changed files with 251 additions and 115 deletions
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41
src/memblockq.c
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@ -18,6 +18,7 @@ struct memblockq {
size_t total_length, maxlength, base, prebuf;
int measure_delay;
uint32_t delay;
struct mcalign *mcalign;
};
struct memblockq* memblockq_new(size_t maxlength, size_t base, size_t prebuf) {
@ -40,6 +41,8 @@ struct memblockq* memblockq_new(size_t maxlength, size_t base, size_t prebuf) {
bq->measure_delay = 0;
bq->delay = 0;
bq->mcalign = NULL;
return bq;
}
@ -48,6 +51,9 @@ void memblockq_free(struct memblockq* bq) {
struct memblock_list *l;
assert(bq);
if (bq->mcalign)
mcalign_free(bq->mcalign);
while ((l = bq->blocks)) {
bq->blocks = l->next;
memblock_unref(l->chunk.memblock);
@ -57,9 +63,9 @@ void memblockq_free(struct memblockq* bq) {
free(bq);
}
void memblockq_push(struct memblockq* bq, struct memchunk *chunk, size_t delta) {
void memblockq_push(struct memblockq* bq, const struct memchunk *chunk, size_t delta) {
struct memblock_list *q;
assert(bq && chunk && chunk->memblock && chunk->length);
assert(bq && chunk && chunk->memblock && chunk->length && (chunk->length % bq->base) == 0);
q = malloc(sizeof(struct memblock_list));
assert(q);
@ -97,9 +103,14 @@ int memblockq_peek(struct memblockq* bq, struct memchunk *chunk) {
*chunk = bq->blocks->chunk;
memblock_ref(chunk->memblock);
if (chunk->memblock->ref != 2)
fprintf(stderr, "block %p with ref %u peeked.\n", chunk->memblock, chunk->memblock->ref);
return 0;
}
/*
int memblockq_pop(struct memblockq* bq, struct memchunk *chunk) {
struct memblock_list *q;
@ -121,6 +132,7 @@ int memblockq_pop(struct memblockq* bq, struct memchunk *chunk) {
free(q);
return 0;
}
*/
static uint32_t age(struct timeval *tv) {
assert(tv);
@ -143,7 +155,7 @@ static uint32_t age(struct timeval *tv) {
}
void memblockq_drop(struct memblockq *bq, size_t length) {
assert(bq);
assert(bq && length && (length % bq->base) == 0);
while (length > 0) {
size_t l = length;
@ -229,3 +241,26 @@ uint32_t memblockq_missing_to(struct memblockq *bq, size_t qlen) {
return qlen - bq->total_length;
}
void memblockq_push_align(struct memblockq* bq, const struct memchunk *chunk, size_t delta) {
struct memchunk rchunk;
assert(bq && chunk && bq->base);
if (bq->base == 1) {
memblockq_push(bq, chunk, delta);
return;
}
if (!bq->mcalign) {
bq->mcalign = mcalign_new(bq->base);
assert(bq->mcalign);
}
mcalign_push(bq->mcalign, chunk);
while (mcalign_pop(bq->mcalign, &rchunk) >= 0) {
memblockq_push(bq, &rchunk, delta);
memblock_unref(rchunk.memblock);
delta = 0;
}
}