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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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16
spa/include/spa/pod/pod.h
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@ -179,6 +179,7 @@ struct spa_pod_prop_body {
#define SPA_POD_PROP_FLAG_DEPRECATED (1 << 7) /**< property is deprecated */
#define SPA_POD_PROP_FLAG_INFO (1 << 8) /**< property is informational and is not
* used when filtering */
#define SPA_POD_PROP_FLAG_CONTROLLABLE (1 << 9) /**< property can be controlled */
uint32_t flags;
struct spa_pod value;
/* array with elements of value.size follows,
@ -190,20 +191,23 @@ struct spa_pod_prop {
struct spa_pod_prop_body body;
};
/* events can be inside an event array and mark timed values */
struct spa_pod_event {
uint64_t offset;
struct spa_pod value;
#define SPA_POD_CONTROL_SIZE(ev) (sizeof(struct spa_pod_control) + (ev)->value.size)
/* controls can be inside a sequence and mark timed values */
struct spa_pod_control {
uint32_t offset; /**< media offset */
uint32_t type; /**< type of control, enum spa_control_type */
struct spa_pod value; /**< control value, depends on type */
/* value contents follow */
};
struct spa_pod_sequence_body {
uint32_t unit;
uint32_t pad;
/* array of struct spa_pod_event follows */
/* series of struct spa_pod_control follows */
};
/** a sequence of timed events */
/** a sequence of timed controls */
struct spa_pod_sequence {
struct spa_pod pod;
struct spa_pod_sequence_body body;