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split user supplied data in multiple memory blocks if necessary to fit in one mempool tile. If the caller supplied a free_cb and we use shm it's better to copy the data immediately to the shm region instead of keeping it around as user memblock

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2278 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2008-04-20 19:49:55 +00:00
parent ed36f3129c
commit 33cb5897e1
1 changed files with 38 additions and 13 deletions
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45
src/pulse/stream.c
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@ -896,6 +896,10 @@ int pa_stream_write(
pa_seek_mode_t seek) {
pa_memchunk chunk;
pa_seek_mode_t t_seek;
int64_t t_offset;
size_t t_length;
const void *t_data;
pa_assert(s);
pa_assert(PA_REFCNT_VALUE(s) >= 1);
@ -909,21 +913,42 @@ int pa_stream_write(
if (length <= 0)
return 0;
if (free_cb)
chunk.memblock = pa_memblock_new_user(s->context->mempool, (void*) data, length, free_cb, 1);
else {
void *tdata;
chunk.memblock = pa_memblock_new(s->context->mempool, length);
tdata = pa_memblock_acquire(chunk.memblock);
memcpy(tdata, data, length);
t_seek = seek;
t_offset = offset;
t_length = length;
t_data = data;
while (t_length > 0) {
chunk.index = 0;
if (free_cb && !pa_pstream_get_shm(s->context->pstream)) {
chunk.memblock = pa_memblock_new_user(s->context->mempool, (void*) t_data, t_length, free_cb, 1);
chunk.length = t_length;
} else {
void *d;
chunk.length = PA_MIN(t_length, pa_mempool_block_size_max(s->context->mempool));
chunk.memblock = pa_memblock_new(s->context->mempool, chunk.length);
d = pa_memblock_acquire(chunk.memblock);
memcpy(d, t_data, chunk.length);
pa_memblock_release(chunk.memblock);
}
chunk.index = 0;
chunk.length = length;
pa_pstream_send_memblock(s->context->pstream, s->channel, t_offset, t_seek, &chunk);
t_offset = 0;
t_seek = PA_SEEK_RELATIVE;
t_data = (const uint8_t*) t_data + chunk.length;
t_length -= chunk.length;
pa_pstream_send_memblock(s->context->pstream, s->channel, offset, seek, &chunk);
pa_memblock_unref(chunk.memblock);
}
if (free_cb && pa_pstream_get_shm(s->context->pstream))
free_cb((void*) data);
if (length < s->requested_bytes)
s->requested_bytes -= length;