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#ifndef foopulsesourceoutputhfoo
#define foopulsesourceoutputhfoo
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <inttypes.h>
typedef struct pa_source_output pa_source_output;
#include <pulse/sample.h>
#include <pulsecore/source.h>
#include <pulsecore/memblockq.h>
#include <pulsecore/resampler.h>
#include <pulsecore/module.h>
#include <pulsecore/client.h>
typedef enum pa_source_output_state {
PA_SOURCE_OUTPUT_INIT,
PA_SOURCE_OUTPUT_RUNNING,
PA_SOURCE_OUTPUT_CORKED,
PA_SOURCE_OUTPUT_UNLINKED
} pa_source_output_state_t;
static inline pa_bool_t PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_state_t x) {
return x == PA_SOURCE_OUTPUT_RUNNING || x == PA_SOURCE_OUTPUT_CORKED;
}
typedef enum pa_source_output_flags {
PA_SOURCE_OUTPUT_VARIABLE_RATE = 1,
PA_SOURCE_OUTPUT_DONT_MOVE = 2,
PA_SOURCE_OUTPUT_START_CORKED = 4,
PA_SOURCE_OUTPUT_NO_REMAP = 8,
PA_SOURCE_OUTPUT_NO_REMIX = 16,
PA_SOURCE_OUTPUT_FIX_FORMAT = 32,
PA_SOURCE_OUTPUT_FIX_RATE = 64,
PA_SOURCE_OUTPUT_FIX_CHANNELS = 128
} pa_source_output_flags_t;
struct pa_source_output {
pa_msgobject parent;
uint32_t index;
pa_core *core;
pa_source_output_state_t state;
pa_source_output_flags_t flags;
pa_proplist *proplist;
char *driver; /* may be NULL */
pa_module *module; /* may be NULL */
pa_client *client; /* may be NULL */
pa_source *source;
/* A source output can monitor just a single input of a sink, in which case we find it here */
pa_sink_input *direct_on_input; /* may be NULL */
pa_sample_spec sample_spec;
pa_channel_map channel_map;
pa_resample_method_t resample_method;
/* Pushes a new memchunk into the output. Called from IO thread
* context. */
void (*push)(pa_source_output *o, const pa_memchunk *chunk);
/* Only relevant for monitor sources right now: called when the
* recorded stream is rewound. Called from IO context*/
void (*process_rewind)(pa_source_output *o, size_t nbytes);
/* Called whenever the maximum rewindable size of the source
* changes. Called from IO thread context. */
void (*update_max_rewind) (pa_source_output *o, size_t nbytes); /* may be NULL */
/* If non-NULL this function is called when the output is first
* connected to a source. Called from IO thread context */
void (*attach) (pa_source_output *o); /* may be NULL */
/* If non-NULL this function is called when the output is
* disconnected from its source. Called from IO thread context */
void (*detach) (pa_source_output *o); /* may be NULL */
/* If non-NULL called whenever the the source this output is attached
* to suspends or resumes. Called from main context */
void (*suspend) (pa_source_output *o, pa_bool_t b); /* may be NULL */
/* If non-NULL called whenever the the source this output is attached
* to changes. Called from main context */
void (*moved) (pa_source_output *o); /* may be NULL */
/* Supposed to unlink and destroy this stream. Called from main
* context. */
void (*kill)(pa_source_output* o); /* may be NULL */
/* Return the current latency (i.e. length of bufferd audio) of
this stream. Called from main context. If NULL a
PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY message is sent to the IO
thread instead. */
pa_usec_t (*get_latency) (pa_source_output *o); /* may be NULL */
/* If non_NULL this function is called from thread context if the
* state changes. The old state is found in thread_info.state. */
void (*state_change) (pa_source_output *o, pa_source_output_state_t state); /* may be NULL */
struct {
pa_source_output_state_t state;
pa_bool_t attached; /* True only between ->attach() and ->detach() calls */
pa_sample_spec sample_spec;
pa_resampler* resampler; /* may be NULL */
/* We maintain a delay memblockq here for source outputs that
* don't implement rewind() */
pa_memblockq *delay_memblockq;
/* The requested latency for the source */
pa_usec_t requested_source_latency;
pa_sink_input *direct_on_input; /* may be NULL */
} thread_info;
void *userdata;
};
PA_DECLARE_CLASS(pa_source_output);
#define PA_SOURCE_OUTPUT(o) pa_source_output_cast(o)
enum {
PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY,
PA_SOURCE_OUTPUT_MESSAGE_SET_RATE,
PA_SOURCE_OUTPUT_MESSAGE_SET_STATE,
PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY,
PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY,
PA_SOURCE_OUTPUT_MESSAGE_MAX
};
typedef struct pa_source_output_new_data {
pa_proplist *proplist;
pa_sink_input *direct_on_input;
const char *driver;
pa_module *module;
pa_client *client;
pa_source *source;
pa_sample_spec sample_spec;
pa_bool_t sample_spec_is_set;
pa_channel_map channel_map;
pa_bool_t channel_map_is_set;
pa_resample_method_t resample_method;
} pa_source_output_new_data;
pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data);
void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec);
void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map);
void pa_source_output_new_data_done(pa_source_output_new_data *data);
typedef struct pa_source_output_move_hook_data {
pa_source_output *source_output;
pa_source *destination;
} pa_source_output_move_hook_data;
/* To be called by the implementing module only */
pa_source_output* pa_source_output_new(
pa_core *core,
pa_source_output_new_data *data,
pa_source_output_flags_t flags);
void pa_source_output_put(pa_source_output *o);
void pa_source_output_unlink(pa_source_output*o);
void pa_source_output_set_name(pa_source_output *i, const char *name);
pa_usec_t pa_source_output_set_requested_latency(pa_source_output *i, pa_usec_t usec);
void pa_source_output_cork(pa_source_output *i, pa_bool_t b);
int pa_source_output_set_rate(pa_source_output *o, uint32_t rate);
/* Callable by everyone */
/* External code may request disconnection with this funcion */
void pa_source_output_kill(pa_source_output*o);
pa_usec_t pa_source_output_get_latency(pa_source_output *i);
pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o);
int pa_source_output_move_to(pa_source_output *o, pa_source *dest);
#define pa_source_output_get_state(o) ((o)->state)
pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o);
/* To be used exclusively by the source driver thread */
void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk);
void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes);
void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes);
void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state);
int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec);
#endif
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