1 files changed, 240 insertions, 0 deletions
diff --git a/src/pulsecore/source-output.h b/src/pulsecore/source-output.h
new file mode 100644
index 00000000..61825b22
--- /dev/null
+++ b/src/pulsecore/source-output.h
@@ -0,0 +1,240 @@
+#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;
+
+    char *driver;                         /* may be NULL */
+    pa_proplist *proplist;
+
+    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); /* 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 */
+
+    /* 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 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 */
+
+    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_usec_t *source_latency);
+
+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