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Added mmap_control access function. Converted static checks in asserts. Uniformed avail functions to kernel code

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This commit is contained in:
Abramo Bagnara 2000-06-04 13:13:01 +00:00
parent f11e203d6e
commit ef2a9bdd88
6 changed files with 239 additions and 359 deletions
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23
src/pcm/pcm_local.h
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@ -79,6 +79,7 @@ typedef struct {
size_t mmap_control_size;
char *mmap_data;
size_t mmap_data_size;
enum { _INTERLEAVED, _NONINTERLEAVED, _COMPLEX } mmap_type;
} snd_pcm_stream_t;
struct snd_pcm {
@ -131,21 +132,19 @@ int conv_index(int src_format, int dst_format);
#define pdprintf( args... ) { ; }
#endif
static inline ssize_t snd_pcm_mmap_playback_bytes_used(snd_pcm_stream_t *str)
static inline size_t snd_pcm_mmap_playback_bytes_avail(snd_pcm_stream_t *str)
{
ssize_t bytes_used;
bytes_used = str->mmap_control->byte_data - str->mmap_control->byte_io;
if (bytes_used < (ssize_t)(str->setup.buffer_size - str->setup.byte_boundary))
bytes_used += str->setup.byte_boundary;
return bytes_used;
ssize_t bytes_avail = str->mmap_control->byte_io + str->setup.buffer_size - str->mmap_control->byte_data;
if (bytes_avail < 0)
bytes_avail += str->setup.byte_boundary;
return bytes_avail;
}
static inline size_t snd_pcm_mmap_capture_bytes_used(snd_pcm_stream_t *str)
static inline size_t snd_pcm_mmap_capture_bytes_avail(snd_pcm_stream_t *str)
{
ssize_t bytes_used;
bytes_used = str->mmap_control->byte_io - str->mmap_control->byte_data;
if (bytes_used < 0)
bytes_used += str->setup.byte_boundary;
return bytes_used;
ssize_t bytes_avail = str->mmap_control->byte_io - str->mmap_control->byte_data;
if (bytes_avail < 0)
bytes_avail += str->setup.byte_boundary;
return bytes_avail;
}