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-rw-r--r--src/pulsecore/source-output.h340
1 files changed, 303 insertions, 37 deletions
diff --git a/src/pulsecore/source-output.h b/src/pulsecore/source-output.h
index ef398dd1..b9a2b6b2 100644
--- a/src/pulsecore/source-output.h
+++ b/src/pulsecore/source-output.h
@@ -1,21 +1,21 @@
-#ifndef foosourceoutputhfoo
-#define foosourceoutputhfoo
-
-/* $Id$ */
+#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,
+ by the Free Software Foundation; either version 2.1 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
@@ -27,66 +27,332 @@
typedef struct pa_source_output pa_source_output;
#include <pulse/sample.h>
-#include <pulsecore/source.h>
+#include <pulse/format.h>
#include <pulsecore/memblockq.h>
#include <pulsecore/resampler.h>
#include <pulsecore/module.h>
#include <pulsecore/client.h>
+#include <pulsecore/source.h>
+#include <pulsecore/core.h>
+#include <pulsecore/sink-input.h>
-typedef enum {
+typedef enum pa_source_output_state {
+ PA_SOURCE_OUTPUT_INIT,
PA_SOURCE_OUTPUT_RUNNING,
PA_SOURCE_OUTPUT_CORKED,
- PA_SOURCE_OUTPUT_DISCONNECTED
+ 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_DONT_INHIBIT_AUTO_SUSPEND = 256,
+ PA_SOURCE_OUTPUT_NO_CREATE_ON_SUSPEND = 512,
+ PA_SOURCE_OUTPUT_KILL_ON_SUSPEND = 1024,
+ PA_SOURCE_OUTPUT_PASSTHROUGH = 2048
+} pa_source_output_flags_t;
+
struct pa_source_output {
- int ref;
+ pa_msgobject parent;
+
uint32_t index;
+ pa_core *core;
+
pa_source_output_state_t state;
-
- char *name, *driver;
- pa_module *owner;
+ pa_source_output_flags_t flags;
- pa_source *source;
- pa_client *client;
+ char *driver; /* may be NULL */
+ pa_proplist *proplist;
+
+ pa_module *module; /* may be NULL */
+ pa_client *client; /* may be NULL */
+
+ pa_source *source; /* NULL while being moved */
+ pa_source *destination_source; /* only set by filter sources */
+
+ /* 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;
-
- void (*push)(pa_source_output *o, const pa_memchunk *chunk);
- void (*kill)(pa_source_output* o);
- pa_usec_t (*get_latency) (pa_source_output *o);
+ pa_format_info *format;
+
+ /* Also see http://pulseaudio.org/wiki/InternalVolumes */
+ pa_cvolume volume; /* The volume clients are informed about */
+ pa_cvolume reference_ratio; /* The ratio of the stream's volume to the source's reference volume */
+ pa_cvolume real_ratio; /* The ratio of the stream's volume to the source's real volume */
+ pa_cvolume volume_factor; /* An internally used volume factor that can be used by modules to apply effects and suchlike without having that visible to the outside */
+ pa_cvolume soft_volume; /* The internal software volume we apply to all PCM data while it passes through. Usually calculated as real_ratio * volume_factor */
+
+ pa_cvolume volume_factor_source; /* A second volume factor in format of the source this stream is connected to */
+
+ pa_bool_t volume_writable:1;
+
+ pa_bool_t muted:1;
+
+ /* if TRUE then the source we are connected to and/or the volume
+ * set is worth remembering, i.e. was explicitly chosen by the
+ * user and not automatically. module-stream-restore looks for
+ * this.*/
+ pa_bool_t save_source:1, save_volume:1, save_muted:1;
+
+ pa_resample_method_t requested_resample_method, actual_resample_method;
+
+ /* Pushes a new memchunk into the output. Called from IO thread
+ * context. */
+ void (*push)(pa_source_output *o, const pa_memchunk *chunk); /* may NOT be NULL */
+
+ /* 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); /* may be NULL */
+
+ /* 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 */
+
+ /* Called whenever the configured latency of the source
+ * changes. Called from IO context. */
+ void (*update_source_requested_latency) (pa_source_output *o); /* may be NULL */
+
+ /* Called whenver the latency range of the source changes. Called
+ * from IO context. */
+ void (*update_source_latency_range) (pa_source_output *o); /* may be NULL */
+
+ /* Called whenver the fixed latency of the source changes, if there
+ * is one. Called from IO context. */
+ void (*update_source_fixed_latency) (pa_source_output *i); /* may be NULL */
+
+ /* If non-NULL this function is called when the output is first
+ * connected to a source or when the rtpoll/asyncmsgq fields
+ * change. You usually don't need to implement this function
+ * unless you rewrite a source that is piggy-backed onto
+ * another. 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 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 source this output is attached
+ * to suspends or resumes. Called from IO context */
+ void (*suspend_within_thread) (pa_source_output *o, pa_bool_t b); /* may be NULL */
+
+ /* If non-NULL called whenever the source output is moved to a new
+ * source. Called from main context after the source output has been
+ * detached from the old source and before it has been attached to
+ * the new source. If dest is NULL the move was executed in two
+ * phases and the second one failed; the stream will be destroyed
+ * after this call. */
+ void (*moving) (pa_source_output *o, pa_source *dest); /* may be NULL */
+
+ /* Supposed to unlink and destroy this stream. Called from main
+ * context. */
+ void (*kill)(pa_source_output* o); /* may NOT be NULL */
+
+ /* Return the current latency (i.e. length of bufferd audio) of
+ this stream. Called from main context. This is added to what the
+ PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY message sent to the IO thread
+ returns */
+ 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 */
+
+ /* If non-NULL this function is called before this source output
+ * is moved to a source and if it returns FALSE the move
+ * will not be allowed */
+ pa_bool_t (*may_move_to) (pa_source_output *o, pa_source *s); /* may be NULL */
+
+ /* If non-NULL this function is used to dispatch asynchronous
+ * control events. */
+ void (*send_event)(pa_source_output *o, const char *event, pa_proplist* data);
+
+ /* If non-NULL this function is called whenever the source output
+ * volume changes. Called from main context */
+ void (*volume_changed)(pa_source_output *o); /* may be NULL */
+
+ /* If non-NULL this function is called whenever the source output
+ * mute status changes. Called from main context */
+ void (*mute_changed)(pa_source_output *o); /* may be NULL */
+
+ struct {
+ pa_source_output_state_t state;
+
+ pa_cvolume soft_volume;
+ pa_bool_t muted:1;
+
+ pa_bool_t attached:1; /* 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;
- pa_resampler* resampler;
-
void *userdata;
};
-pa_source_output* pa_source_output_new(
- pa_source *s,
- const char *driver,
- const char *name,
- const pa_sample_spec *spec,
- const pa_channel_map *map,
- int resample_method);
+PA_DECLARE_PUBLIC_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_SET_SOFT_VOLUME,
+ PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_MUTE,
+ PA_SOURCE_OUTPUT_MESSAGE_MAX
+};
+
+typedef struct pa_source_output_send_event_hook_data {
+ pa_source_output *source_output;
+ const char *event;
+ pa_proplist *data;
+} pa_source_output_send_event_hook_data;
+
+typedef struct pa_source_output_new_data {
+ pa_source_output_flags_t flags;
+
+ pa_proplist *proplist;
+ pa_sink_input *direct_on_input;
+
+ const char *driver;
+ pa_module *module;
+ pa_client *client;
+
+ pa_source *source;
+ pa_source *destination_source;
+
+ pa_resample_method_t resample_method;
+
+ pa_sample_spec sample_spec;
+ pa_channel_map channel_map;
+ pa_format_info *format;
+ pa_idxset *req_formats;
+ pa_idxset *nego_formats;
+
+ pa_cvolume volume, volume_factor, volume_factor_source;
+ pa_bool_t muted:1;
+
+ pa_bool_t sample_spec_is_set:1;
+ pa_bool_t channel_map_is_set:1;
+
+ pa_bool_t volume_is_set:1, volume_factor_is_set:1, volume_factor_source_is_set:1;
+ pa_bool_t muted_is_set:1;
+
+ pa_bool_t volume_is_absolute:1;
+
+ pa_bool_t volume_writable:1;
-void pa_source_output_unref(pa_source_output* o);
-pa_source_output* pa_source_output_ref(pa_source_output *o);
+ pa_bool_t save_source:1, save_volume:1, save_muted:1;
+} 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);
+pa_bool_t pa_source_output_new_data_is_passthrough(pa_source_output_new_data *data);
+void pa_source_output_new_data_set_volume(pa_source_output_new_data *data, const pa_cvolume *volume);
+void pa_source_output_new_data_apply_volume_factor(pa_source_output_new_data *data, const pa_cvolume *volume_factor);
+void pa_source_output_new_data_apply_volume_factor_source(pa_source_output_new_data *data, const pa_cvolume *volume_factor);
+void pa_source_output_new_data_set_muted(pa_source_output_new_data *data, pa_bool_t mute);
+pa_bool_t pa_source_output_new_data_set_source(pa_source_output_new_data *data, pa_source *s, pa_bool_t save);
+pa_bool_t pa_source_output_new_data_set_formats(pa_source_output_new_data *data, pa_idxset *formats);
+void pa_source_output_new_data_done(pa_source_output_new_data *data);
/* To be called by the implementing module only */
-void pa_source_output_disconnect(pa_source_output*o);
+
+int pa_source_output_new(
+ pa_source_output**o,
+ pa_core *core,
+ pa_source_output_new_data *data);
+
+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 *o, const char *name);
+
+pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec);
+
+void pa_source_output_cork(pa_source_output *o, pa_bool_t b);
+
+int pa_source_output_set_rate(pa_source_output *o, uint32_t rate);
+
+size_t pa_source_output_get_max_rewind(pa_source_output *o);
+
+/* Callable by everyone */
/* External code may request disconnection with this funcion */
void pa_source_output_kill(pa_source_output*o);
-void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk);
+pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency);
-void pa_source_output_set_name(pa_source_output *i, const char *name);
+pa_bool_t pa_source_output_is_volume_readable(pa_source_output *o);
+pa_bool_t pa_source_output_is_passthrough(pa_source_output *o);
+void pa_source_output_set_volume(pa_source_output *o, const pa_cvolume *volume, pa_bool_t save, pa_bool_t absolute);
+pa_cvolume *pa_source_output_get_volume(pa_source_output *o, pa_cvolume *volume, pa_bool_t absolute);
-pa_usec_t pa_source_output_get_latency(pa_source_output *i);
+void pa_source_output_set_mute(pa_source_output *o, pa_bool_t mute, pa_bool_t save);
+pa_bool_t pa_source_output_get_mute(pa_source_output *o);
-void pa_source_output_cork(pa_source_output *i, int b);
+void pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p);
pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o);
+void pa_source_output_send_event(pa_source_output *o, const char *name, pa_proplist *data);
+
+pa_bool_t pa_source_output_may_move(pa_source_output *o);
+pa_bool_t pa_source_output_may_move_to(pa_source_output *o, pa_source *dest);
+int pa_source_output_move_to(pa_source_output *o, pa_source *dest, pa_bool_t save);
+
+/* The same as pa_source_output_move_to() but in two seperate steps,
+ * first the detaching from the old source, then the attaching to the
+ * new source */
+int pa_source_output_start_move(pa_source_output *o);
+int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t save);
+void pa_source_output_fail_move(pa_source_output *o);
+
+#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);
+
+#define pa_source_output_assert_io_context(s) \
+ pa_assert(pa_thread_mq_get() || !PA_SOURCE_OUTPUT_IS_LINKED((s)->state))
+
#endif
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