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io: add io areas for position information

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This commit is contained in:
Wim Taymans 2018-10-23 16:14:17 +02:00
parent 66de372e9a
commit 34db9be04b
2 changed files with 52 additions and 8 deletions
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59
spa/include/spa/node/io.h
View file

@ -27,21 +27,23 @@ extern "C" {
#include <spa/utils/defs.h>
#include <spa/pod/pod.h>
/** Buffers IO area
/** IO areas
*
* IO information for a port on a node. This is allocated
* by the host and configured on all ports for which IO is requested.
* by the host and configured on a node or all ports for which
* IO is requested.
*/
/** Different IO area types */
enum spa_io_type {
SPA_IO_Invalid,
SPA_IO_Buffers,
SPA_IO_Range,
SPA_IO_Clock,
SPA_IO_Latency,
SPA_IO_Control,
SPA_IO_Notify,
SPA_IO_Buffers, /**< area to exchange buffers */
SPA_IO_Range, /**< expected byte range */
SPA_IO_Clock, /**< area to update clock information */
SPA_IO_Latency, /**< latency reporting */
SPA_IO_Control, /**< area for control messages */
SPA_IO_Notify, /**< area for notify messages */
SPA_IO_Position, /**< position information in the graph */
};
struct spa_io_buffers {
@ -86,6 +88,47 @@ struct spa_io_sequence {
struct spa_pod_sequence sequence; /**< sequence of timed events */
};
/** bar and beat position */
struct spa_io_position_bar {
uint32_t size; /**< size of this structure */
uint32_t offset; /**< offset of last bar in samples against current cycle */
struct spa_fraction signature; /**< time signature */
double bpm; /**< beats per minute */
double bar; /**< current bar in quarter notes */
double last_bar; /**< position of last bar in quarter notes */
double cycle_start; /**< cycle start in quarter notes */
double cycle_end; /**< cycle end in quarter notes */
uint32_t padding[16];
};
/** video frame position */
struct spa_io_position_video {
uint32_t size; /**< size of this structure */
uint32_t offset; /**< offset of frame against current cycle */
struct spa_fraction framerate;
#define SPA_IO_POSITION_VIDEO_FLAG_DROP_FRAME (1<<0)
#define SPA_IO_POSITION_VIDEO_FLAG_PULL_DOWN (1<<1)
#define SPA_IO_POSITION_VIDEO_FLAG_INTERLACED (1<<2)
uint32_t flags; /**< flags */
uint32_t hours;
uint32_t minutes;
uint32_t seconds;
uint32_t frames;
uint32_t field_count; /**< 0 for progressive, 1 and 2 for interlaced */
uint32_t padding[16];
};
/** position reporting */
struct spa_io_position {
struct spa_io_clock clock; /**< clock position of driver, always valid and
* read only */
struct spa_fraction rate; /**< overal rate of the graph */
#define SPA_IO_POSITION_FLAG_BAR (1<<0)
#define SPA_IO_POSITION_FLAG_VIDEO (1<<1)
uint64_t flags; /**< flags indicate what fields are valid */
struct spa_io_position_bar bar; /**< when mask & SPA_IO_POSITION_FLAG_BAR*/
struct spa_io_position_video video; /**< when mask & SPA_IO_POSITION_FLAG_VIDEO */
};
#ifdef __cplusplus
} /* extern "C" */

1
spa/include/spa/node/type-info.h
View file

@ -41,6 +41,7 @@ static const struct spa_type_info spa_type_io[] = {
{ SPA_IO_Latency, SPA_TYPE_IO_BASE "Latency", SPA_TYPE_Int, },
{ SPA_IO_Control, SPA_TYPE_IO_BASE "Control", SPA_TYPE_Int, },
{ SPA_IO_Notify, SPA_TYPE_IO_BASE "Notify", SPA_TYPE_Int, },
{ SPA_IO_Position, SPA_TYPE_IO_BASE "Position", SPA_TYPE_Int, },
{ 0, NULL, },
};