git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@3231 0c269be4-1314-0410-8aa9-9f06e86f4224tags/1.9.1
@@ -23,6 +23,10 @@ Michael Voigt | |||||
Jackdmp changes log | Jackdmp changes log | ||||
--------------------------- | --------------------------- | ||||
2009-01-05 Stephane Letz <letz@grame.fr> | |||||
* Synchronize jack2 public headers with jack1 ones. | |||||
2008-12-18 Stephane Letz <letz@grame.fr> | 2008-12-18 Stephane Letz <letz@grame.fr> | ||||
* For ALSA driver, synchronize with latest jack1 memops functions. | * For ALSA driver, synchronize with latest jack1 memops functions. | ||||
@@ -25,11 +25,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |||||
namespace Jack | namespace Jack | ||||
{ | { | ||||
namespace detail | |||||
{ | |||||
/*! | /*! | ||||
\brief An inter process synchronization primitive. | \brief An inter process synchronization primitive. | ||||
*/ | */ | ||||
namespace detail | |||||
{ | |||||
class JackSynchro | class JackSynchro | ||||
{ | { | ||||
@@ -50,13 +50,13 @@ class JackRunnableInterface | |||||
virtual bool Execute() = 0; /*! Must be implemented by subclasses */ | virtual bool Execute() = 0; /*! Must be implemented by subclasses */ | ||||
}; | }; | ||||
namespace detail | |||||
{ | |||||
/*! | /*! | ||||
\brief The thread base class. | \brief The thread base class. | ||||
*/ | */ | ||||
namespace detail | |||||
{ | |||||
class SERVER_EXPORT JackThreadInterface | class SERVER_EXPORT JackThreadInterface | ||||
{ | { | ||||
@@ -78,6 +78,11 @@ extern "C" { | |||||
} /* Adjust editor indent */ | } /* Adjust editor indent */ | ||||
#endif | #endif | ||||
/** | |||||
* @defgroup ServerControl Controling the server | |||||
* @{ | |||||
*/ | |||||
/** | /** | ||||
* Call this function to setup process signal handling. As a general | * Call this function to setup process signal handling. As a general | ||||
* rule, it is required for proper operation for the server object. | * rule, it is required for proper operation for the server object. | ||||
@@ -320,7 +325,7 @@ jackctl_parameter_get_default_value( | |||||
*/ | */ | ||||
bool | bool | ||||
jackctl_parameter_has_range_constraint( | jackctl_parameter_has_range_constraint( | ||||
jackctl_parameter_t * parameter_ptr); | |||||
jackctl_parameter_t * parameter); | |||||
/** | /** | ||||
* Call this function check whether parameter has enumeration constraint. | * Call this function check whether parameter has enumeration constraint. | ||||
@@ -331,7 +336,7 @@ jackctl_parameter_has_range_constraint( | |||||
*/ | */ | ||||
bool | bool | ||||
jackctl_parameter_has_enum_constraint( | jackctl_parameter_has_enum_constraint( | ||||
jackctl_parameter_t * parameter_ptr); | |||||
jackctl_parameter_t * parameter); | |||||
/** | /** | ||||
* Call this function get how many enumeration values parameter has. | * Call this function get how many enumeration values parameter has. | ||||
@@ -342,7 +347,7 @@ jackctl_parameter_has_enum_constraint( | |||||
*/ | */ | ||||
uint32_t | uint32_t | ||||
jackctl_parameter_get_enum_constraints_count( | jackctl_parameter_get_enum_constraints_count( | ||||
jackctl_parameter_t * parameter_ptr); | |||||
jackctl_parameter_t * parameter); | |||||
/** | /** | ||||
* Call this function to get parameter enumeration value. | * Call this function to get parameter enumeration value. | ||||
@@ -354,7 +359,7 @@ jackctl_parameter_get_enum_constraints_count( | |||||
*/ | */ | ||||
union jackctl_parameter_value | union jackctl_parameter_value | ||||
jackctl_parameter_get_enum_constraint_value( | jackctl_parameter_get_enum_constraint_value( | ||||
jackctl_parameter_t * parameter_ptr, | |||||
jackctl_parameter_t * parameter, | |||||
uint32_t index); | uint32_t index); | ||||
/** | /** | ||||
@@ -367,7 +372,7 @@ jackctl_parameter_get_enum_constraint_value( | |||||
*/ | */ | ||||
const char * | const char * | ||||
jackctl_parameter_get_enum_constraint_description( | jackctl_parameter_get_enum_constraint_description( | ||||
jackctl_parameter_t * parameter_ptr, | |||||
jackctl_parameter_t * parameter, | |||||
uint32_t index); | uint32_t index); | ||||
/** | /** | ||||
@@ -379,7 +384,7 @@ jackctl_parameter_get_enum_constraint_description( | |||||
*/ | */ | ||||
void | void | ||||
jackctl_parameter_get_range_constraint( | jackctl_parameter_get_range_constraint( | ||||
jackctl_parameter_t * parameter_ptr, | |||||
jackctl_parameter_t * parameter, | |||||
union jackctl_parameter_value * min_ptr, | union jackctl_parameter_value * min_ptr, | ||||
union jackctl_parameter_value * max_ptr); | union jackctl_parameter_value * max_ptr); | ||||
@@ -393,7 +398,7 @@ jackctl_parameter_get_range_constraint( | |||||
*/ | */ | ||||
bool | bool | ||||
jackctl_parameter_constraint_is_strict( | jackctl_parameter_constraint_is_strict( | ||||
jackctl_parameter_t * parameter_ptr); | |||||
jackctl_parameter_t * parameter); | |||||
/** | /** | ||||
* Call this function to check whether parameter has fake values, | * Call this function to check whether parameter has fake values, | ||||
@@ -406,7 +411,7 @@ jackctl_parameter_constraint_is_strict( | |||||
*/ | */ | ||||
bool | bool | ||||
jackctl_parameter_constraint_is_fake_value( | jackctl_parameter_constraint_is_fake_value( | ||||
jackctl_parameter_t * parameter_ptr); | |||||
jackctl_parameter_t * parameter); | |||||
/** | /** | ||||
* Call this function to get list of available internal clients. List node data | * Call this function to get list of available internal clients. List node data | ||||
@@ -503,6 +508,8 @@ jack_log( | |||||
const char *format, | const char *format, | ||||
...); | ...); | ||||
/* @} */ | |||||
#if 0 | #if 0 | ||||
{ /* Adjust editor indent */ | { /* Adjust editor indent */ | ||||
#endif | #endif | ||||
@@ -27,101 +27,101 @@ extern "C" | |||||
#include <jack/types.h> | #include <jack/types.h> | ||||
/** | |||||
* Get an internal client's name. This is useful when @ref | |||||
* JackUseExactName was not specified on jack_internal_client_load() | |||||
* and @ref JackNameNotUnique status was returned. In that case, the | |||||
* actual name will differ from the @a client_name requested. | |||||
* | |||||
* @param client requesting JACK client's handle. | |||||
* | |||||
* @param intclient handle returned from jack_internal_client_load() | |||||
* or jack_internal_client_handle(). | |||||
* | |||||
* @return NULL if unsuccessful, otherwise pointer to the internal | |||||
* client name obtained from the heap via malloc(). The caller should | |||||
* free() this storage when no longer needed. | |||||
*/ | |||||
char *jack_get_internal_client_name (jack_client_t *client, | |||||
jack_intclient_t intclient); | |||||
/** | |||||
* Get an internal client's name. This is useful when @ref | |||||
* JackUseExactName was not specified on jack_internal_client_load() | |||||
* and @ref JackNameNotUnique status was returned. In that case, the | |||||
* actual name will differ from the @a client_name requested. | |||||
* | |||||
* @param client requesting JACK client's handle. | |||||
* | |||||
* @param intclient handle returned from jack_internal_client_load() | |||||
* or jack_internal_client_handle(). | |||||
* | |||||
* @return NULL if unsuccessful, otherwise pointer to the internal | |||||
* client name obtained from the heap via malloc(). The caller should | |||||
* free() this storage when no longer needed. | |||||
*/ | |||||
char *jack_get_internal_client_name (jack_client_t *client, | |||||
jack_intclient_t intclient); | |||||
/** | |||||
* Return the @ref jack_intclient_t handle for an internal client | |||||
* running in the JACK server. | |||||
* | |||||
* @param client requesting JACK client's handle. | |||||
* | |||||
* @param client_name for the internal client of no more than | |||||
* jack_client_name_size() characters. The name scope is local to the | |||||
* current server. | |||||
* | |||||
* @param status (if non-NULL) an address for JACK to return | |||||
* information from this operation. This status word is formed by | |||||
* OR-ing together the relevant @ref JackStatus bits. | |||||
* | |||||
* @return Opaque internal client handle if successful. If 0, the | |||||
* internal client was not found, and @a *status includes the @ref | |||||
* JackNoSuchClient and @ref JackFailure bits. | |||||
*/ | |||||
jack_intclient_t jack_internal_client_handle (jack_client_t *client, | |||||
const char *client_name, | |||||
jack_status_t *status); | |||||
/** | |||||
* Return the @ref jack_intclient_t handle for an internal client | |||||
* running in the JACK server. | |||||
* | |||||
* @param client requesting JACK client's handle. | |||||
* | |||||
* @param client_name for the internal client of no more than | |||||
* jack_client_name_size() characters. The name scope is local to the | |||||
* current server. | |||||
* | |||||
* @param status (if non-NULL) an address for JACK to return | |||||
* information from this operation. This status word is formed by | |||||
* OR-ing together the relevant @ref JackStatus bits. | |||||
* | |||||
* @return Opaque internal client handle if successful. If 0, the | |||||
* internal client was not found, and @a *status includes the @ref | |||||
* JackNoSuchClient and @ref JackFailure bits. | |||||
*/ | |||||
jack_intclient_t jack_internal_client_handle (jack_client_t *client, | |||||
const char *client_name, | |||||
jack_status_t *status); | |||||
/** | |||||
* Load an internal client into the JACK server. | |||||
* | |||||
* Internal clients run inside the JACK server process. They can use | |||||
* most of the same functions as external clients. Each internal | |||||
* client is built as a shared object module, which must declare | |||||
* jack_initialize() and jack_finish() entry points called at load and | |||||
* unload times. See @ref inprocess.c for an example. | |||||
* | |||||
* @param client loading JACK client's handle. | |||||
* | |||||
* @param client_name of at most jack_client_name_size() characters | |||||
* for the internal client to load. The name scope is local to the | |||||
* current server. | |||||
* | |||||
* @param options formed by OR-ing together @ref JackOptions bits. | |||||
* Only the @ref JackLoadOptions bits are valid. | |||||
* | |||||
* @param status (if non-NULL) an address for JACK to return | |||||
* information from the load operation. This status word is formed by | |||||
* OR-ing together the relevant @ref JackStatus bits. | |||||
* | |||||
* <b>Optional parameters:</b> depending on corresponding [@a options | |||||
* bits] additional parameters may follow @a status (in this order). | |||||
* | |||||
* @arg [@ref JackLoadName] <em>(char *) load_name</em> is the shared | |||||
* object file from which to load the new internal client (otherwise | |||||
* use the @a client_name). | |||||
* | |||||
* @arg [@ref JackLoadInit] <em>(char *) load_init</em> an arbitary | |||||
* string passed to the internal client's jack_initialize() routine | |||||
* (otherwise NULL), of no more than @ref JACK_LOAD_INIT_LIMIT bytes. | |||||
* | |||||
* @return Opaque internal client handle if successful. If this is 0, | |||||
* the load operation failed, the internal client was not loaded, and | |||||
* @a *status includes the @ref JackFailure bit. | |||||
*/ | |||||
jack_intclient_t jack_internal_client_load (jack_client_t *client, | |||||
const char *client_name, | |||||
jack_options_t options, | |||||
jack_status_t *status, ...); | |||||
/** | |||||
* Unload an internal client from a JACK server. This calls the | |||||
* intclient's jack_finish() entry point then removes it. See @ref | |||||
* inprocess.c for an example. | |||||
* | |||||
* @param client unloading JACK client's handle. | |||||
* | |||||
* @param intclient handle returned from jack_internal_client_load() or | |||||
* jack_internal_client_handle(). | |||||
* | |||||
* @return 0 if successful, otherwise @ref JackStatus bits. | |||||
*/ | |||||
jack_status_t jack_internal_client_unload (jack_client_t *client, | |||||
jack_intclient_t intclient); | |||||
/** | |||||
* Load an internal client into the JACK server. | |||||
* | |||||
* Internal clients run inside the JACK server process. They can use | |||||
* most of the same functions as external clients. Each internal | |||||
* client is built as a shared object module, which must declare | |||||
* jack_initialize() and jack_finish() entry points called at load and | |||||
* unload times. See @ref inprocess.c for an example. | |||||
* | |||||
* @param client loading JACK client's handle. | |||||
* | |||||
* @param client_name of at most jack_client_name_size() characters | |||||
* for the internal client to load. The name scope is local to the | |||||
* current server. | |||||
* | |||||
* @param options formed by OR-ing together @ref JackOptions bits. | |||||
* Only the @ref JackLoadOptions bits are valid. | |||||
* | |||||
* @param status (if non-NULL) an address for JACK to return | |||||
* information from the load operation. This status word is formed by | |||||
* OR-ing together the relevant @ref JackStatus bits. | |||||
* | |||||
* <b>Optional parameters:</b> depending on corresponding [@a options | |||||
* bits] additional parameters may follow @a status (in this order). | |||||
* | |||||
* @arg [@ref JackLoadName] <em>(char *) load_name</em> is the shared | |||||
* object file from which to load the new internal client (otherwise | |||||
* use the @a client_name). | |||||
* | |||||
* @arg [@ref JackLoadInit] <em>(char *) load_init</em> an arbitary | |||||
* string passed to the internal client's jack_initialize() routine | |||||
* (otherwise NULL), of no more than @ref JACK_LOAD_INIT_LIMIT bytes. | |||||
* | |||||
* @return Opaque internal client handle if successful. If this is 0, | |||||
* the load operation failed, the internal client was not loaded, and | |||||
* @a *status includes the @ref JackFailure bit. | |||||
*/ | |||||
jack_intclient_t jack_internal_client_load (jack_client_t *client, | |||||
const char *client_name, | |||||
jack_options_t options, | |||||
jack_status_t *status, ...); | |||||
/** | |||||
* Unload an internal client from a JACK server. This calls the | |||||
* intclient's jack_finish() entry point then removes it. See @ref | |||||
* inprocess.c for an example. | |||||
* | |||||
* @param client unloading JACK client's handle. | |||||
* | |||||
* @param intclient handle returned from jack_internal_client_load() or | |||||
* jack_internal_client_handle(). | |||||
* | |||||
* @return 0 if successful, otherwise @ref JackStatus bits. | |||||
*/ | |||||
jack_status_t jack_internal_client_unload (jack_client_t *client, | |||||
jack_intclient_t intclient); | |||||
#ifdef __cplusplus | #ifdef __cplusplus | ||||
} | } | ||||
@@ -42,6 +42,11 @@ typedef struct _jack_midi_event | |||||
} jack_midi_event_t; | } jack_midi_event_t; | ||||
/** | |||||
* @defgroup MIDIAPI Reading and writing MIDI data | |||||
* @{ | |||||
*/ | |||||
/* Get number of events in a port buffer. | /* Get number of events in a port buffer. | ||||
* | * | ||||
* @param port_buffer Port buffer from which to retrieve event. | * @param port_buffer Port buffer from which to retrieve event. | ||||
@@ -142,6 +147,7 @@ jack_midi_event_write(void *port_buffer, | |||||
jack_nframes_t | jack_nframes_t | ||||
jack_midi_get_lost_event_count(void *port_buffer); | jack_midi_get_lost_event_count(void *port_buffer); | ||||
/*@}*/ | |||||
#ifdef __cplusplus | #ifdef __cplusplus | ||||
} | } | ||||
@@ -28,203 +28,203 @@ extern "C" | |||||
#include <sys/types.h> | #include <sys/types.h> | ||||
/** @file ringbuffer.h | |||||
* | |||||
* A set of library functions to make lock-free ringbuffers available | |||||
* to JACK clients. The `capture_client.c' (in the example_clients | |||||
* directory) is a fully functioning user of this API. | |||||
* | |||||
* The key attribute of a ringbuffer is that it can be safely accessed | |||||
* by two threads simultaneously -- one reading from the buffer and | |||||
* the other writing to it -- without using any synchronization or | |||||
* mutual exclusion primitives. For this to work correctly, there can | |||||
* only be a single reader and a single writer thread. Their | |||||
* identities cannot be interchanged. | |||||
*/ | |||||
typedef struct { | |||||
char *buf; | |||||
size_t len; | |||||
} | |||||
jack_ringbuffer_data_t ; | |||||
typedef struct { | |||||
char *buf; | |||||
volatile size_t write_ptr; | |||||
volatile size_t read_ptr; | |||||
size_t size; | |||||
size_t size_mask; | |||||
int mlocked; | |||||
} | |||||
jack_ringbuffer_t ; | |||||
/** | |||||
* Allocates a ringbuffer data structure of a specified size. The | |||||
* caller must arrange for a call to jack_ringbuffer_free() to release | |||||
* the memory associated with the ringbuffer. | |||||
* | |||||
* @param sz the ringbuffer size in bytes. | |||||
* | |||||
* @return a pointer to a new jack_ringbuffer_t, if successful; NULL | |||||
* otherwise. | |||||
*/ | |||||
jack_ringbuffer_t *jack_ringbuffer_create(size_t sz); | |||||
/** | |||||
* Frees the ringbuffer data structure allocated by an earlier call to | |||||
* jack_ringbuffer_create(). | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
*/ | |||||
void jack_ringbuffer_free(jack_ringbuffer_t *rb); | |||||
/** | |||||
* Fill a data structure with a description of the current readable | |||||
* data held in the ringbuffer. This description is returned in a two | |||||
* element array of jack_ringbuffer_data_t. Two elements are needed | |||||
* because the data to be read may be split across the end of the | |||||
* ringbuffer. | |||||
* | |||||
* The first element will always contain a valid @a len field, which | |||||
* may be zero or greater. If the @a len field is non-zero, then data | |||||
* can be read in a contiguous fashion using the address given in the | |||||
* corresponding @a buf field. | |||||
* | |||||
* If the second element has a non-zero @a len field, then a second | |||||
* contiguous stretch of data can be read from the address given in | |||||
* its corresponding @a buf field. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param vec a pointer to a 2 element array of jack_ringbuffer_data_t. | |||||
* | |||||
*/ | |||||
void jack_ringbuffer_get_read_vector(const jack_ringbuffer_t *rb, | |||||
jack_ringbuffer_data_t *vec); | |||||
/** | |||||
* Fill a data structure with a description of the current writable | |||||
* space in the ringbuffer. The description is returned in a two | |||||
* element array of jack_ringbuffer_data_t. Two elements are needed | |||||
* because the space available for writing may be split across the end | |||||
* of the ringbuffer. | |||||
* | |||||
* The first element will always contain a valid @a len field, which | |||||
* may be zero or greater. If the @a len field is non-zero, then data | |||||
* can be written in a contiguous fashion using the address given in | |||||
* the corresponding @a buf field. | |||||
* | |||||
* If the second element has a non-zero @a len field, then a second | |||||
* contiguous stretch of data can be written to the address given in | |||||
* the corresponding @a buf field. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param vec a pointer to a 2 element array of jack_ringbuffer_data_t. | |||||
*/ | |||||
void jack_ringbuffer_get_write_vector(const jack_ringbuffer_t *rb, | |||||
jack_ringbuffer_data_t *vec); | |||||
/** | |||||
* Read data from the ringbuffer. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param dest a pointer to a buffer where data read from the | |||||
* ringbuffer will go. | |||||
* @param cnt the number of bytes to read. | |||||
* | |||||
* @return the number of bytes read, which may range from 0 to cnt. | |||||
*/ | |||||
size_t jack_ringbuffer_read(jack_ringbuffer_t *rb, char *dest, size_t cnt); | |||||
/** | |||||
* Read data from the ringbuffer. Opposed to jack_ringbuffer_read() | |||||
* this function does not move the read pointer. Thus it's | |||||
* a convenient way to inspect data in the ringbuffer in a | |||||
* continous fashion. The price is that the data is copied | |||||
* into a user provided buffer. For "raw" non-copy inspection | |||||
* of the data in the ringbuffer use jack_ringbuffer_get_read_vector(). | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param dest a pointer to a buffer where data read from the | |||||
* ringbuffer will go. | |||||
* @param cnt the number of bytes to read. | |||||
* | |||||
* @return the number of bytes read, which may range from 0 to cnt. | |||||
*/ | |||||
size_t jack_ringbuffer_peek(jack_ringbuffer_t *rb, char *dest, size_t cnt); | |||||
/** | |||||
* Advance the read pointer. | |||||
* | |||||
* After data have been read from the ringbuffer using the pointers | |||||
* returned by jack_ringbuffer_get_read_vector(), use this function to | |||||
* advance the buffer pointers, making that space available for future | |||||
* write operations. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param cnt the number of bytes read. | |||||
*/ | |||||
void jack_ringbuffer_read_advance(jack_ringbuffer_t *rb, size_t cnt); | |||||
/** | |||||
* Return the number of bytes available for reading. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* | |||||
* @return the number of bytes available to read. | |||||
*/ | |||||
size_t jack_ringbuffer_read_space(const jack_ringbuffer_t *rb); | |||||
/** | |||||
* Lock a ringbuffer data block into memory. | |||||
* | |||||
* Uses the mlock() system call. This is not a realtime operation. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
*/ | |||||
int jack_ringbuffer_mlock(jack_ringbuffer_t *rb); | |||||
/** | |||||
* Reset the read and write pointers, making an empty buffer. | |||||
* | |||||
* This is not thread safe. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
*/ | |||||
void jack_ringbuffer_reset(jack_ringbuffer_t *rb); | |||||
/** | |||||
* Write data into the ringbuffer. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param src a pointer to the data to be written to the ringbuffer. | |||||
* @param cnt the number of bytes to write. | |||||
* | |||||
* @return the number of bytes write, which may range from 0 to cnt | |||||
*/ | |||||
size_t jack_ringbuffer_write(jack_ringbuffer_t *rb, const char *src, | |||||
size_t cnt); | |||||
/** | |||||
* Advance the write pointer. | |||||
* | |||||
* After data have been written the ringbuffer using the pointers | |||||
* returned by jack_ringbuffer_get_write_vector(), use this function | |||||
* to advance the buffer pointer, making the data available for future | |||||
* read operations. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param cnt the number of bytes written. | |||||
*/ | |||||
void jack_ringbuffer_write_advance(jack_ringbuffer_t *rb, size_t cnt); | |||||
/** | |||||
* Return the number of bytes available for writing. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* | |||||
* @return the amount of free space (in bytes) available for writing. | |||||
*/ | |||||
size_t jack_ringbuffer_write_space(const jack_ringbuffer_t *rb); | |||||
/** @file ringbuffer.h | |||||
* | |||||
* A set of library functions to make lock-free ringbuffers available | |||||
* to JACK clients. The `capture_client.c' (in the example_clients | |||||
* directory) is a fully functioning user of this API. | |||||
* | |||||
* The key attribute of a ringbuffer is that it can be safely accessed | |||||
* by two threads simultaneously -- one reading from the buffer and | |||||
* the other writing to it -- without using any synchronization or | |||||
* mutual exclusion primitives. For this to work correctly, there can | |||||
* only be a single reader and a single writer thread. Their | |||||
* identities cannot be interchanged. | |||||
*/ | |||||
typedef struct { | |||||
char *buf; | |||||
size_t len; | |||||
} | |||||
jack_ringbuffer_data_t ; | |||||
typedef struct { | |||||
char *buf; | |||||
volatile size_t write_ptr; | |||||
volatile size_t read_ptr; | |||||
size_t size; | |||||
size_t size_mask; | |||||
int mlocked; | |||||
} | |||||
jack_ringbuffer_t ; | |||||
/** | |||||
* Allocates a ringbuffer data structure of a specified size. The | |||||
* caller must arrange for a call to jack_ringbuffer_free() to release | |||||
* the memory associated with the ringbuffer. | |||||
* | |||||
* @param sz the ringbuffer size in bytes. | |||||
* | |||||
* @return a pointer to a new jack_ringbuffer_t, if successful; NULL | |||||
* otherwise. | |||||
*/ | |||||
jack_ringbuffer_t *jack_ringbuffer_create(size_t sz); | |||||
/** | |||||
* Frees the ringbuffer data structure allocated by an earlier call to | |||||
* jack_ringbuffer_create(). | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
*/ | |||||
void jack_ringbuffer_free(jack_ringbuffer_t *rb); | |||||
/** | |||||
* Fill a data structure with a description of the current readable | |||||
* data held in the ringbuffer. This description is returned in a two | |||||
* element array of jack_ringbuffer_data_t. Two elements are needed | |||||
* because the data to be read may be split across the end of the | |||||
* ringbuffer. | |||||
* | |||||
* The first element will always contain a valid @a len field, which | |||||
* may be zero or greater. If the @a len field is non-zero, then data | |||||
* can be read in a contiguous fashion using the address given in the | |||||
* corresponding @a buf field. | |||||
* | |||||
* If the second element has a non-zero @a len field, then a second | |||||
* contiguous stretch of data can be read from the address given in | |||||
* its corresponding @a buf field. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param vec a pointer to a 2 element array of jack_ringbuffer_data_t. | |||||
* | |||||
*/ | |||||
void jack_ringbuffer_get_read_vector(const jack_ringbuffer_t *rb, | |||||
jack_ringbuffer_data_t *vec); | |||||
/** | |||||
* Fill a data structure with a description of the current writable | |||||
* space in the ringbuffer. The description is returned in a two | |||||
* element array of jack_ringbuffer_data_t. Two elements are needed | |||||
* because the space available for writing may be split across the end | |||||
* of the ringbuffer. | |||||
* | |||||
* The first element will always contain a valid @a len field, which | |||||
* may be zero or greater. If the @a len field is non-zero, then data | |||||
* can be written in a contiguous fashion using the address given in | |||||
* the corresponding @a buf field. | |||||
* | |||||
* If the second element has a non-zero @a len field, then a second | |||||
* contiguous stretch of data can be written to the address given in | |||||
* the corresponding @a buf field. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param vec a pointer to a 2 element array of jack_ringbuffer_data_t. | |||||
*/ | |||||
void jack_ringbuffer_get_write_vector(const jack_ringbuffer_t *rb, | |||||
jack_ringbuffer_data_t *vec); | |||||
/** | |||||
* Read data from the ringbuffer. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param dest a pointer to a buffer where data read from the | |||||
* ringbuffer will go. | |||||
* @param cnt the number of bytes to read. | |||||
* | |||||
* @return the number of bytes read, which may range from 0 to cnt. | |||||
*/ | |||||
size_t jack_ringbuffer_read(jack_ringbuffer_t *rb, char *dest, size_t cnt); | |||||
/** | |||||
* Read data from the ringbuffer. Opposed to jack_ringbuffer_read() | |||||
* this function does not move the read pointer. Thus it's | |||||
* a convenient way to inspect data in the ringbuffer in a | |||||
* continous fashion. The price is that the data is copied | |||||
* into a user provided buffer. For "raw" non-copy inspection | |||||
* of the data in the ringbuffer use jack_ringbuffer_get_read_vector(). | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param dest a pointer to a buffer where data read from the | |||||
* ringbuffer will go. | |||||
* @param cnt the number of bytes to read. | |||||
* | |||||
* @return the number of bytes read, which may range from 0 to cnt. | |||||
*/ | |||||
size_t jack_ringbuffer_peek(jack_ringbuffer_t *rb, char *dest, size_t cnt); | |||||
/** | |||||
* Advance the read pointer. | |||||
* | |||||
* After data have been read from the ringbuffer using the pointers | |||||
* returned by jack_ringbuffer_get_read_vector(), use this function to | |||||
* advance the buffer pointers, making that space available for future | |||||
* write operations. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param cnt the number of bytes read. | |||||
*/ | |||||
void jack_ringbuffer_read_advance(jack_ringbuffer_t *rb, size_t cnt); | |||||
/** | |||||
* Return the number of bytes available for reading. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* | |||||
* @return the number of bytes available to read. | |||||
*/ | |||||
size_t jack_ringbuffer_read_space(const jack_ringbuffer_t *rb); | |||||
/** | |||||
* Lock a ringbuffer data block into memory. | |||||
* | |||||
* Uses the mlock() system call. This is not a realtime operation. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
*/ | |||||
int jack_ringbuffer_mlock(jack_ringbuffer_t *rb); | |||||
/** | |||||
* Reset the read and write pointers, making an empty buffer. | |||||
* | |||||
* This is not thread safe. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
*/ | |||||
void jack_ringbuffer_reset(jack_ringbuffer_t *rb); | |||||
/** | |||||
* Write data into the ringbuffer. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param src a pointer to the data to be written to the ringbuffer. | |||||
* @param cnt the number of bytes to write. | |||||
* | |||||
* @return the number of bytes write, which may range from 0 to cnt | |||||
*/ | |||||
size_t jack_ringbuffer_write(jack_ringbuffer_t *rb, const char *src, | |||||
size_t cnt); | |||||
/** | |||||
* Advance the write pointer. | |||||
* | |||||
* After data have been written the ringbuffer using the pointers | |||||
* returned by jack_ringbuffer_get_write_vector(), use this function | |||||
* to advance the buffer pointer, making the data available for future | |||||
* read operations. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* @param cnt the number of bytes written. | |||||
*/ | |||||
void jack_ringbuffer_write_advance(jack_ringbuffer_t *rb, size_t cnt); | |||||
/** | |||||
* Return the number of bytes available for writing. | |||||
* | |||||
* @param rb a pointer to the ringbuffer structure. | |||||
* | |||||
* @return the amount of free space (in bytes) available for writing. | |||||
*/ | |||||
size_t jack_ringbuffer_write_space(const jack_ringbuffer_t *rb); | |||||
#ifdef __cplusplus | #ifdef __cplusplus | ||||
} | } | ||||
@@ -28,27 +28,27 @@ extern "C" | |||||
#include <jack/types.h> | #include <jack/types.h> | ||||
/** | |||||
* @return the maximum delay reported by the backend since | |||||
* startup or reset. When compared to the period size in usecs, this | |||||
* can be used to estimate the ideal period size for a given setup. | |||||
*/ | |||||
float jack_get_max_delayed_usecs (jack_client_t *client); | |||||
/** | |||||
* @return the delay in microseconds due to the most recent XRUN | |||||
* occurrence. This probably only makes sense when called from a @ref | |||||
* JackXRunCallback defined using jack_set_xrun_callback(). | |||||
*/ | |||||
float jack_get_xrun_delayed_usecs (jack_client_t *client); | |||||
/** | |||||
* Reset the maximum delay counter. This would be useful | |||||
* to estimate the effect that a change to the configuration of a running | |||||
* system (e.g. toggling kernel preemption) has on the delay | |||||
* experienced by JACK, without having to restart the JACK engine. | |||||
*/ | |||||
void jack_reset_max_delayed_usecs (jack_client_t *client); | |||||
/** | |||||
* @return the maximum delay reported by the backend since | |||||
* startup or reset. When compared to the period size in usecs, this | |||||
* can be used to estimate the ideal period size for a given setup. | |||||
*/ | |||||
float jack_get_max_delayed_usecs (jack_client_t *client); | |||||
/** | |||||
* @return the delay in microseconds due to the most recent XRUN | |||||
* occurrence. This probably only makes sense when called from a @ref | |||||
* JackXRunCallback defined using jack_set_xrun_callback(). | |||||
*/ | |||||
float jack_get_xrun_delayed_usecs (jack_client_t *client); | |||||
/** | |||||
* Reset the maximum delay counter. This would be useful | |||||
* to estimate the effect that a change to the configuration of a running | |||||
* system (e.g. toggling kernel preemption) has on the delay | |||||
* experienced by JACK, without having to restart the JACK engine. | |||||
*/ | |||||
void jack_reset_max_delayed_usecs (jack_client_t *client); | |||||
#ifdef __cplusplus | #ifdef __cplusplus | ||||
} | } | ||||
@@ -27,74 +27,97 @@ extern "C" | |||||
#include <jack/systemdeps.h> | #include <jack/systemdeps.h> | ||||
/** @file thread.h | |||||
* | |||||
* Library functions to standardize thread creation for JACK and its | |||||
* clients. These interfaces hide some system variations in the | |||||
* handling of realtime scheduling and associated privileges. | |||||
*/ | |||||
/** | |||||
* Attempt to enable realtime scheduling for a thread. On some | |||||
* systems that may require special privileges. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* @param priority requested thread priority. | |||||
* | |||||
* @returns 0, if successful; EPERM, if the calling process lacks | |||||
* required realtime privileges; otherwise some other error number. | |||||
*/ | |||||
int jack_acquire_real_time_scheduling (pthread_t thread, int priority); | |||||
/** | |||||
* Create a thread for JACK or one of its clients. The thread is | |||||
* created executing @a start_routine with @a arg as its sole | |||||
* argument. | |||||
* | |||||
* @param client the JACK client for whom the thread is being created. May be | |||||
* NULL if the client is being created within the JACK server. | |||||
* @param thread place to return POSIX thread ID. | |||||
* @param priority thread priority, if realtime. | |||||
* @param realtime true for the thread to use realtime scheduling. On | |||||
* some systems that may require special privileges. | |||||
* @param start_routine function the thread calls when it starts. | |||||
* @param arg parameter passed to the @a start_routine. | |||||
* | |||||
* @returns 0, if successful; otherwise some error number. | |||||
*/ | |||||
int jack_client_create_thread (jack_client_t* client, | |||||
pthread_t *thread, | |||||
int priority, | |||||
int realtime, /* boolean */ | |||||
void *(*start_routine)(void*), | |||||
void *arg); | |||||
/** | |||||
* Drop realtime scheduling for a thread. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* | |||||
* @returns 0, if successful; otherwise an error number. | |||||
*/ | |||||
int jack_drop_real_time_scheduling (pthread_t thread); | |||||
/** | |||||
* Stop the thread, waiting for the thread handler to terminate. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* | |||||
* @returns 0, if successful; otherwise an error number. | |||||
*/ | |||||
int jack_client_stop_thread(jack_client_t* client, pthread_t thread); | |||||
/** | |||||
* Cancel the thread then waits for the thread handler to terminate. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* | |||||
* @returns 0, if successful; otherwise an error number. | |||||
*/ | |||||
int jack_client_kill_thread(jack_client_t* client, pthread_t thread); | |||||
/** @file thread.h | |||||
* | |||||
* Library functions to standardize thread creation for JACK and its | |||||
* clients. These interfaces hide some system variations in the | |||||
* handling of realtime scheduling and associated privileges. | |||||
*/ | |||||
/** | |||||
* @defgroup ClientThreads Creating and managing client threads | |||||
* @{ | |||||
*/ | |||||
/** | |||||
* @returns if JACK is running with realtime scheduling, this returns | |||||
* the priority that any JACK-created client threads will run at. | |||||
* Otherwise returns -1. | |||||
*/ | |||||
int jack_client_real_time_priority (jack_client_t*); | |||||
/** | |||||
* @returns if JACK is running with realtime scheduling, this returns | |||||
* the maximum priority that a JACK client thread should use if the thread | |||||
* is subject to realtime scheduling. Otherwise returns -1. | |||||
*/ | |||||
int jack_client_max_real_time_priority (jack_client_t*); | |||||
/** | |||||
* Attempt to enable realtime scheduling for a thread. On some | |||||
* systems that may require special privileges. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* @param priority requested thread priority. | |||||
* | |||||
* @returns 0, if successful; EPERM, if the calling process lacks | |||||
* required realtime privileges; otherwise some other error number. | |||||
*/ | |||||
int jack_acquire_real_time_scheduling (pthread_t thread, int priority); | |||||
/** | |||||
* Create a thread for JACK or one of its clients. The thread is | |||||
* created executing @a start_routine with @a arg as its sole | |||||
* argument. | |||||
* | |||||
* @param client the JACK client for whom the thread is being created. May be | |||||
* NULL if the client is being created within the JACK server. | |||||
* @param thread place to return POSIX thread ID. | |||||
* @param priority thread priority, if realtime. | |||||
* @param realtime true for the thread to use realtime scheduling. On | |||||
* some systems that may require special privileges. | |||||
* @param start_routine function the thread calls when it starts. | |||||
* @param arg parameter passed to the @a start_routine. | |||||
* | |||||
* @returns 0, if successful; otherwise some error number. | |||||
*/ | |||||
int jack_client_create_thread (jack_client_t* client, | |||||
pthread_t *thread, | |||||
int priority, | |||||
int realtime, /* boolean */ | |||||
void *(*start_routine)(void*), | |||||
void *arg); | |||||
/** | |||||
* Drop realtime scheduling for a thread. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* | |||||
* @returns 0, if successful; otherwise an error number. | |||||
*/ | |||||
int jack_drop_real_time_scheduling (pthread_t thread); | |||||
/** | |||||
* Stop the thread, waiting for the thread handler to terminate. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* | |||||
* @returns 0, if successful; otherwise an error number. | |||||
*/ | |||||
int jack_client_stop_thread(jack_client_t* client, pthread_t thread); | |||||
/** | |||||
* Cancel the thread then waits for the thread handler to terminate. | |||||
* | |||||
* @param thread POSIX thread ID. | |||||
* | |||||
* @returns 0, if successful; otherwise an error number. | |||||
*/ | |||||
int jack_client_kill_thread(jack_client_t* client, pthread_t thread); | |||||
/* @} */ | |||||
#ifdef __cplusplus | #ifdef __cplusplus | ||||
} | } | ||||
@@ -27,6 +27,11 @@ extern "C" { | |||||
#include <jack/types.h> | #include <jack/types.h> | ||||
/** | |||||
* @defgroup TransportControl Transport and Timebase control | |||||
* @{ | |||||
*/ | |||||
/** | /** | ||||
* Called by the timebase master to release itself from that | * Called by the timebase master to release itself from that | ||||
* responsibility. | * responsibility. | ||||
@@ -206,7 +211,7 @@ void jack_transport_start (jack_client_t *client); | |||||
* @param client the JACK client structure. | * @param client the JACK client structure. | ||||
*/ | */ | ||||
void jack_transport_stop (jack_client_t *client); | void jack_transport_stop (jack_client_t *client); | ||||
/** | /** | ||||
* Gets the current transport info structure (deprecated). | * Gets the current transport info structure (deprecated). | ||||
* | * | ||||
@@ -232,6 +237,8 @@ void jack_get_transport_info (jack_client_t *client, | |||||
void jack_set_transport_info (jack_client_t *client, | void jack_set_transport_info (jack_client_t *client, | ||||
jack_transport_info_t *tinfo); | jack_transport_info_t *tinfo); | ||||
/*@}*/ | |||||
#ifdef __cplusplus | #ifdef __cplusplus | ||||
} | } | ||||
#endif | #endif | ||||
@@ -17,13 +17,13 @@ | |||||
# The PROJECT_NAME tag is a single word (or a sequence of words surrounded | # The PROJECT_NAME tag is a single word (or a sequence of words surrounded | ||||
# by quotes) that should identify the project. | # by quotes) that should identify the project. | ||||
PROJECT_NAME = "Jackdmp" | |||||
PROJECT_NAME = "Jack2" | |||||
# The PROJECT_NUMBER tag can be used to enter a project or revision number. | # The PROJECT_NUMBER tag can be used to enter a project or revision number. | ||||
# This could be handy for archiving the generated documentation or | # This could be handy for archiving the generated documentation or | ||||
# if some version control system is used. | # if some version control system is used. | ||||
PROJECT_NUMBER = 1.90 | |||||
PROJECT_NUMBER = 1.9.1 | |||||
# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) | # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) | ||||
# base path where the generated documentation will be put. | # base path where the generated documentation will be put. | ||||