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improve error checking in simple API

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@537 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2006-02-20 23:32:12 +00:00
parent 2bdc07e2ea
commit d48912ba04
1 changed files with 72 additions and 18 deletions
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90
src/polyp/simple.c
View file

@ -37,6 +37,14 @@
#include "simple.h"
#define CHECK_VALIDITY_RETURN_ANY(rerror, expression, error, ret) do { \
if (!(expression)) { \
if (rerror) \
*(rerror) = error; \
return ret; \
} \
} while(0);
struct pa_simple {
pa_mainloop *mainloop;
pa_context *context;
@ -126,10 +134,14 @@ pa_simple* pa_simple_new(
int *rerror) {
pa_simple *p;
int error = PA_ERR_INTERNAL;
assert(ss && (dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD));
int error = PA_ERR_INTERNAL, r;
p = pa_xmalloc(sizeof(pa_simple));
CHECK_VALIDITY_RETURN_ANY(rerror, !server || *server, PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD, PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, !dev || *dev, PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID, NULL);
p = pa_xnew(pa_simple, 1);
p->context = NULL;
p->stream = NULL;
p->mainloop = pa_mainloop_new();
@ -143,21 +155,31 @@ pa_simple* pa_simple_new(
if (!(p->context = pa_context_new(pa_mainloop_get_api(p->mainloop), name)))
goto fail;
pa_context_connect(p->context, server, 1, NULL);
if (pa_context_connect(p->context, server, 0, NULL) < 0) {
error = pa_context_errno(p->context);
goto fail;
}
/* Wait until the context is ready */
while (pa_context_get_state(p->context) != PA_CONTEXT_READY) {
if (iterate(p, 1, &error) < 0)
goto fail;
}
if (!(p->stream = pa_stream_new(p->context, stream_name, ss, NULL)))
if (!(p->stream = pa_stream_new(p->context, stream_name, ss, NULL))) {
error = pa_context_errno(p->context);
goto fail;
}
if (dir == PA_STREAM_PLAYBACK)
pa_stream_connect_playback(p->stream, dev, attr, 0, NULL, NULL);
r = pa_stream_connect_playback(p->stream, dev, attr, 0, NULL, NULL);
else
pa_stream_connect_record(p->stream, dev, attr, 0);
r = pa_stream_connect_record(p->stream, dev, attr, 0);
if (r < 0) {
error = pa_context_errno(p->context);
goto fail;
}
/* Wait until the stream is ready */
while (pa_stream_get_state(p->stream) != PA_STREAM_READY) {
@ -190,7 +212,10 @@ void pa_simple_free(pa_simple *s) {
}
int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
assert(p && data && p->direction == PA_STREAM_PLAYBACK);
assert(p);
assert(data);
CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
if (p->dead) {
if (rerror)
@ -222,8 +247,11 @@ int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
}
int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
assert(p && data && p->direction == PA_STREAM_RECORD);
assert(p);
assert(data);
CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, -1);
if (p->dead) {
if (rerror)
*rerror = pa_context_errno(p->context);
@ -273,14 +301,20 @@ int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
static void drain_or_flush_complete(pa_stream *s, int success, void *userdata) {
pa_simple *p = userdata;
assert(s && p);
assert(s);
assert(p);
if (!success)
p->dead = 1;
}
int pa_simple_drain(pa_simple *p, int *rerror) {
pa_operation *o;
assert(p && p->direction == PA_STREAM_PLAYBACK);
assert(p);
CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
if (p->dead) {
if (rerror)
@ -289,7 +323,11 @@ int pa_simple_drain(pa_simple *p, int *rerror) {
return -1;
}
o = pa_stream_drain(p->stream, drain_or_flush_complete, p);
if (!(o = pa_stream_drain(p->stream, drain_or_flush_complete, p))) {
if (rerror)
*rerror = pa_context_errno(p->context);
return -1;
}
while (pa_operation_get_state(o) == PA_OPERATION_RUNNING) {
if (iterate(p, 1, rerror) < 0) {
@ -309,7 +347,9 @@ int pa_simple_drain(pa_simple *p, int *rerror) {
static void latency_complete(pa_stream *s, const pa_latency_info *l, void *userdata) {
pa_simple *p = userdata;
assert(s && p);
assert(s);
assert(p);
if (!l)
p->dead = 1;
@ -323,7 +363,10 @@ static void latency_complete(pa_stream *s, const pa_latency_info *l, void *userd
pa_usec_t pa_simple_get_playback_latency(pa_simple *p, int *rerror) {
pa_operation *o;
assert(p && p->direction == PA_STREAM_PLAYBACK);
assert(p);
CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
if (p->dead) {
if (rerror)
@ -333,7 +376,11 @@ pa_usec_t pa_simple_get_playback_latency(pa_simple *p, int *rerror) {
}
p->latency = 0;
o = pa_stream_get_latency_info(p->stream, latency_complete, p);
if (!(o = pa_stream_get_latency_info(p->stream, latency_complete, p))) {
if (rerror)
*rerror = pa_context_errno(p->context);
return (pa_usec_t) -1;
}
while (pa_operation_get_state(o) == PA_OPERATION_RUNNING) {
@ -354,7 +401,10 @@ pa_usec_t pa_simple_get_playback_latency(pa_simple *p, int *rerror) {
int pa_simple_flush(pa_simple *p, int *rerror) {
pa_operation *o;
assert(p && p->direction == PA_STREAM_PLAYBACK);
assert(p);
CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
if (p->dead) {
if (rerror)
@ -363,7 +413,11 @@ int pa_simple_flush(pa_simple *p, int *rerror) {
return -1;
}
o = pa_stream_flush(p->stream, drain_or_flush_complete, p);
if (!(o = pa_stream_flush(p->stream, drain_or_flush_complete, p))) {
if (rerror)
*rerror = pa_context_errno(p->context);
return -1;
}
while (pa_operation_get_state(o) == PA_OPERATION_RUNNING) {
if (iterate(p, 1, rerror) < 0) {