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First version of ALSA client/server

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This commit is contained in:
Abramo Bagnara 2000-08-31 11:21:05 +00:00
parent e94033141d
commit 4637f62ff5
12 changed files with 1931 additions and 34 deletions
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16
src/pcm/pcm_hw.c
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@ -292,9 +292,9 @@ ssize_t snd_pcm_hw_readv(void *private, snd_timestamp_t *tstamp, const struct io
static int snd_pcm_hw_mmap_status(void *private, snd_pcm_mmap_status_t **status)
{
void *ptr;
snd_pcm_hw_t *hw = (snd_pcm_hw_t*) private;
ptr = mmap(NULL, sizeof(snd_pcm_mmap_control_t), PROT_READ, MAP_FILE|MAP_SHARED,
void *ptr;
ptr = mmap(NULL, sizeof(snd_pcm_mmap_status_t), PROT_READ, MAP_FILE|MAP_SHARED,
hw->fd, SND_PCM_MMAP_OFFSET_STATUS);
if (ptr == MAP_FAILED || ptr == NULL)
return -errno;
@ -304,8 +304,8 @@ static int snd_pcm_hw_mmap_status(void *private, snd_pcm_mmap_status_t **status)
static int snd_pcm_hw_mmap_control(void *private, snd_pcm_mmap_control_t **control)
{
void *ptr;
snd_pcm_hw_t *hw = (snd_pcm_hw_t*) private;
void *ptr;
ptr = mmap(NULL, sizeof(snd_pcm_mmap_control_t), PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,
hw->fd, SND_PCM_MMAP_OFFSET_CONTROL);
if (ptr == MAP_FAILED || ptr == NULL)
@ -316,15 +316,15 @@ static int snd_pcm_hw_mmap_control(void *private, snd_pcm_mmap_control_t **contr
static int snd_pcm_hw_mmap_data(void *private, void **buffer, size_t bsize)
{
int prot;
void *daddr;
snd_pcm_hw_t *hw = (snd_pcm_hw_t*) private;
void *ptr;
int prot;
prot = hw->handle->stream == SND_PCM_STREAM_PLAYBACK ? PROT_WRITE : PROT_READ;
daddr = mmap(NULL, bsize, prot, MAP_FILE|MAP_SHARED,
ptr = mmap(NULL, bsize, prot, MAP_FILE|MAP_SHARED,
hw->fd, SND_PCM_MMAP_OFFSET_DATA);
if (daddr == MAP_FAILED || daddr == NULL)
if (ptr == MAP_FAILED || ptr == NULL)
return -errno;
*buffer = daddr;
*buffer = ptr;
return 0;
}