mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-03 09:01:54 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

mem: remove memory stuff

Browse source 
Remove the memory stuff from the spa API, we can do thing more simple
and efficiently if we always allocate buffers outside of the plugins and
only implement an alloc function on the node when it can do something
clever.
Move serialize code to the props/format/buffer code
Make it possible to copy a format and properties.
This commit is contained in:
Wim Taymans 2016-09-29 18:18:59 +02:00
parent fe37e2bc1b
commit 24108e01c1
46 changed files with 901 additions and 1546 deletions
Download patch file Download diff file Expand all files Collapse all files

115
spa/lib/buffer.c
View file

@ -35,16 +35,16 @@ typedef struct {
} Buffer;
SpaResult
spa_buffer_alloc (SpaAllocParam **params,
unsigned int n_params,
SpaBuffer **buffers,
unsigned int *n_buffers)
spa_buffer_alloc (SpaBufferAllocFlags flags,
SpaAllocParam **params,
unsigned int n_params,
SpaBuffer **buffers,
unsigned int *n_buffers)
{
unsigned int i, nbufs;
size_t size = 0, stride = 0;
SpaMemory *bmem, *dmem;
void *mem;
Buffer *bufs;
Buffer *b;
bool add_header = false;
int n_metas = 0;
@ -91,28 +91,26 @@ spa_buffer_alloc (SpaAllocParam **params,
*n_buffers = nbufs;
bmem = spa_memory_alloc_with_fd (SPA_MEMORY_POOL_SHARED,
NULL, sizeof (Buffer) * nbufs);
dmem = spa_memory_alloc_with_fd (SPA_MEMORY_POOL_SHARED,
NULL, size * nbufs);
if (flags & SPA_BUFFER_ALLOC_FLAG_NO_MEM)
size = 0;
bufs = spa_memory_ensure_ptr (bmem);
mem = calloc (nbufs, sizeof (Buffer) + size);
bufs = mem;
for (i = 0; i < nbufs; i++) {
int mi = 0;
Buffer *b;
b = &bufs[i];
b->buffer.id = i;
b->buffer.mem.mem = bmem->mem;
b->buffer.mem.offset = sizeof (Buffer) * i;
b->buffer.mem.size = sizeof (Buffer);
buffers[i] = &b->buffer;
b->buffer.n_metas = n_metas;
b->buffer.metas = offsetof (Buffer, metas);
b->buffer.metas = b->metas;
b->buffer.n_datas = 1;
b->buffer.datas = offsetof (Buffer, datas);
b->buffer.datas = b->datas;
if (add_header) {
b->header.flags = 0;
@ -121,15 +119,92 @@ spa_buffer_alloc (SpaAllocParam **params,
b->header.dts_offset = 0;
b->metas[mi].type = SPA_META_TYPE_HEADER;
b->metas[mi].offset = offsetof (Buffer, header);
b->metas[mi].data = &b->header;
b->metas[mi].size = sizeof (b->header);
mi++;
}
b->datas[0].mem.mem = dmem->mem;
b->datas[0].mem.offset = size * i;
b->datas[0].mem.size = size;
if (size == 0) {
b->datas[0].type = SPA_DATA_TYPE_INVALID;
b->datas[0].data = NULL;
} else {
b->datas[0].type = SPA_DATA_TYPE_MEMPTR;
b->datas[0].data = mem + sizeof (Buffer);
}
b->datas[0].offset = size * i;
b->datas[0].size = size;
b->datas[0].stride = stride;
}
return SPA_RESULT_OK;
}
size_t
spa_buffer_get_size (const SpaBuffer *buffer)
{
size_t size;
unsigned int i;
if (buffer == NULL)
return 0;
size = sizeof (SpaBuffer);
for (i = 0; i < buffer->n_metas; i++)
size += buffer->metas[i].size * sizeof (SpaMeta);
for (i = 0; i < buffer->n_datas; i++)
size += sizeof (SpaData);
return size;
}
size_t
spa_buffer_serialize (void *dest, const SpaBuffer *buffer)
{
SpaBuffer *tb;
SpaMeta *mp;
SpaData *dp;
void *p;
unsigned int i;
if (buffer == NULL)
return 0;
tb = dest;
memcpy (tb, buffer, sizeof (SpaBuffer));
mp = SPA_MEMBER (tb, sizeof(SpaBuffer), SpaMeta);
dp = SPA_MEMBER (mp, sizeof(SpaMeta) * tb->n_metas, SpaData);
p = SPA_MEMBER (dp, sizeof(SpaData) * tb->n_datas, void);
tb->metas = SPA_INT_TO_PTR (SPA_PTRDIFF (mp, tb));
tb->datas = SPA_INT_TO_PTR (SPA_PTRDIFF (dp, tb));
for (i = 0; i < tb->n_metas; i++) {
memcpy (&mp[i], &buffer->metas[i], sizeof (SpaMeta));
memcpy (p, mp[i].data, mp[i].size);
mp[i].data = SPA_INT_TO_PTR (SPA_PTRDIFF (p, tb));
p += mp[i].size;
}
for (i = 0; i < tb->n_datas; i++)
memcpy (&dp[i], &buffer->datas[i], sizeof (SpaData));
return SPA_PTRDIFF (p, tb);
}
SpaBuffer *
spa_buffer_deserialize (void *src, off_t offset)
{
SpaBuffer *b;
unsigned int i;
b = SPA_MEMBER (src, offset, SpaBuffer);
if (b->metas)
b->metas = SPA_MEMBER (b, SPA_PTR_TO_INT (b->metas), SpaMeta);
for (i = 0; i < b->n_metas; i++) {
SpaMeta *m = &b->metas[i];
if (m->data)
m->data = SPA_MEMBER (b, SPA_PTR_TO_INT (m->data), void);
}
if (b->datas)
b->datas = SPA_MEMBER (b, SPA_PTR_TO_INT (b->datas), SpaData);
return b;
}