mmal_vc_api.h

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/*
Copyright (c) 2012, Broadcom Europe Ltd
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the copyright holder nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef MMAL_VC_API_H
#define MMAL_VC_API_H

#include "interface/mmal/mmal_types.h"
#include "interface/mmal/mmal_parameters.h"
#include "interface/mmal/mmal_port.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
   MMAL_STATS_COMP_IDLE,
   MMAL_STATS_COMP_CREATED,
   MMAL_STATS_COMP_DESTROYING,
   MMAL_STATS_COMP_DESTROYED,
   MMAL_STATS_COMP_UNUSED = 0xffffffff /* force 32bit */
} MMAL_STATS_COMP_STATE_T;

struct MMAL_VC_COMP_STATS_T {
   struct MMAL_DRIVER_COMPONENT_T *comp;
   MMAL_STATS_COMP_STATE_T state;
   uint32_t pid;
   uint32_t pool_mem_alloc_size;
   char name[20];
};

struct MMAL_VC_STATS_T
{
   struct
   {
      uint32_t rx;               
      uint32_t rx_zero_copy;     
      uint32_t rx_empty;         
      uint32_t rx_fails;         
      uint32_t tx;               
      uint32_t tx_zero_copy;     
      uint32_t tx_empty;         
      uint32_t tx_fails;         
      uint32_t tx_short_msg;     
      uint32_t rx_short_msg;     
   } buffers;
   struct service
   {
      uint32_t created;          
      uint32_t pending_destroy;  
      uint32_t destroyed;        
      uint32_t failures;         
   } service;
   struct commands
   {
      uint32_t bad_messages;
      uint32_t executed;
      uint32_t failed;
      uint32_t replies;
      uint32_t reply_fails;
   } commands;
   struct
   {
      uint32_t tx;               
      uint32_t tx_fails;         
   } events;
   struct
   {
      uint32_t created;
      uint32_t destroyed;
      uint32_t destroying;
      uint32_t failed;
      uint32_t list_size;
      struct MMAL_VC_COMP_STATS_T component_list[8];
   } components;
   struct
   {
      uint32_t enqueued_messages;
      uint32_t dequeued_messages;
      uint32_t max_parameter_set_delay;
      uint32_t max_messages_waiting;
   } worker;

};
typedef struct MMAL_VC_STATS_T MMAL_VC_STATS_T;

/* Simple circular text buffer used to store 'interesting' data
 * from MMAL clients. e.g. settings for each picture taken */
struct MMAL_VC_HOST_LOG_T
{
   char buffer[16 << 10];
   uint32_t magic;
   int32_t offset;
   unsigned count;
};
typedef struct MMAL_VC_HOST_LOG_T MMAL_VC_HOST_LOG_T;

typedef enum
{
   MMAL_STATS_FOUND,
   MMAL_STATS_COMPONENT_NOT_FOUND,
   MMAL_STATS_PORT_NOT_FOUND,
   MMAL_STATS_INVALID = 0x7fffffff
} MMAL_STATS_RESULT_T;

/* If opening dev_vchiq outside mmal/vchiq this is the file path and mode */
#define MMAL_DEV_VCHIQ_PATH "/dev/vchiq"
#define MMAL_DEV_VCHIQ_MODE O_RDWR

MMAL_STATUS_T mmal_vc_init(void);
MMAL_STATUS_T mmal_vc_init_fd(int dev_vchiq_fd);
void mmal_vc_deinit(void);

MMAL_STATUS_T mmal_vc_use(void);
MMAL_STATUS_T mmal_vc_release(void);

MMAL_STATUS_T mmal_vc_get_version(uint32_t *major, uint32_t *minor, uint32_t *minimum);
MMAL_STATUS_T mmal_vc_get_stats(MMAL_VC_STATS_T *stats, int reset);

MMAL_STATUS_T mmal_vc_get_core_stats(MMAL_CORE_STATISTICS_T *stats,
                                     MMAL_STATS_RESULT_T *result,
                                     char *name,
                                     size_t namelen,
                                     MMAL_PORT_TYPE_T type,
                                     unsigned component,
                                     unsigned port,
                                     MMAL_CORE_STATS_DIR dir,
                                     MMAL_BOOL_T reset);
MMAL_STATUS_T mmal_vc_host_log(const char *msg);

/* For backwards compatibility in builds */
#define MMAL_VC_API_HAVE_HOST_LOG

/* VC DEBUG ONLY ************************************************************/
MMAL_STATUS_T mmal_vc_consume_mem(size_t size, uint32_t *handle);

typedef enum
{
   MMAL_VC_COMPACT_NONE       = 0,
   MMAL_VC_COMPACT_NORMAL     = 1,
   MMAL_VC_COMPACT_DISCARD    = 2,
   MMAL_VC_COMPACT_AGGRESSIVE = 4,
   MMAL_VC_COMPACT_SHUFFLE    = 0x80,
   MMAL_VC_COMPACT_ALL        = MMAL_VC_COMPACT_NORMAL | MMAL_VC_COMPACT_DISCARD | MMAL_VC_COMPACT_AGGRESSIVE,
} MMAL_VC_COMPACT_MODE_T;

MMAL_STATUS_T mmal_vc_compact(MMAL_VC_COMPACT_MODE_T mode, uint32_t *duration);

MMAL_STATUS_T mmal_vc_lmk(uint32_t alloc_size);

#ifdef __cplusplus
}
#endif
#endif