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Implement control streams

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spa_io_control_range -> spa_io_range
Add helpers for sequence and control pod objects
Implement control properties in audiotestsrc, update test example.
This commit is contained in:
Wim Taymans 2018-08-28 18:16:41 +02:00
parent 90c1a95eef
commit c9526dc2bb
21 changed files with 289 additions and 272 deletions
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45
spa/include/spa/pod/builder.h
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@ -371,6 +371,25 @@ spa_pod_builder_push_prop(struct spa_pod_builder *builder, uint32_t key, uint32_
sizeof(p) - sizeof(struct spa_pod)));
}
#define SPA_POD_SEQUENCE_INIT(size,unit,...) \
(struct spa_pod_sequence){ { size, SPA_TYPE_Sequence}, {unit, 0 }, ##__VA_ARGS__ }
static inline uint32_t
spa_pod_builder_push_sequence(struct spa_pod_builder *builder, uint32_t unit)
{
const struct spa_pod_sequence p =
SPA_POD_SEQUENCE_INIT(sizeof(struct spa_pod_sequence_body), unit);
return spa_pod_builder_push(builder, &p.pod,
spa_pod_builder_raw(builder, &p, sizeof(p)));
}
static inline uint32_t
spa_pod_builder_control_header(struct spa_pod_builder *builder, uint32_t offset, uint32_t type)
{
const struct { uint32_t offset; uint32_t type; } p = { offset, type };
return spa_pod_builder_raw(builder, &p, sizeof(p));
}
static inline uint32_t spa_pod_range_from_id(char id)
{
switch (id) {
@ -400,6 +419,8 @@ static inline uint32_t spa_pod_flag_from_id(char id)
return SPA_POD_PROP_FLAG_DEPRECATED;
case 'i':
return SPA_POD_PROP_FLAG_INFO;
case 'c':
return SPA_POD_PROP_FLAG_CONTROLLABLE;
default:
return 0;
}
@ -518,6 +539,19 @@ spa_pod_builder_addv(struct spa_pod_builder *builder,
case '(':
spa_pod_builder_push_array(builder);
break;
case '{':
{
uint32_t unit = va_arg(args, uint32_t);
spa_pod_builder_push_sequence(builder, unit);
break;
}
case '.':
{
uint32_t offset = va_arg(args, uint32_t);
uint32_t type = va_arg(args, uint32_t);
spa_pod_builder_control_header(builder, offset, type);
break;
}
case ':':
{
int n_values;
@ -553,7 +587,7 @@ spa_pod_builder_addv(struct spa_pod_builder *builder,
/* don't advance format */
continue;
}
case ']': case ')': case '>':
case ']': case ')': case '>': case '}':
spa_pod_builder_pop(builder);
if (builder->state.depth > 0 &&
builder->frame[builder->state.depth-1].pod.type == SPA_TYPE_Prop)
@ -595,6 +629,12 @@ static inline void *spa_pod_builder_add(struct spa_pod_builder *builder, const c
#define SPA_POD_PROP(key,spec,type,value,...) \
":", key, spec, value, ##__VA_ARGS__
#define SPA_POD_SEQUENCE(unit,...) \
"{", unit, ##__VA_ARGS__, "}"
#define SPA_POD_CONTROL(offset,type,...) \
".", offset, type, ##__VA_ARGS__
#define SPA_POD_PROP_MIN_MAX(min,max) 2,(min),(max)
#define SPA_POD_PROP_STEP(min,max,step) 3,(min),(max),(step)
#define SPA_POD_PROP_ENUM(n_vals,...) (n_vals),__VA_ARGS__
@ -605,6 +645,9 @@ static inline void *spa_pod_builder_add(struct spa_pod_builder *builder, const c
#define spa_pod_builder_struct(b,...) \
spa_pod_builder_add(b, SPA_POD_STRUCT(__VA_ARGS__), NULL)
#define spa_pod_builder_sequence(b,unit,...) \
spa_pod_builder_add(b, SPA_POD_SEQUENCE(unit,__VA_ARGS__), NULL)
#ifdef __cplusplus
} /* extern "C" */
#endif