9 #include "sourceoutput.h"
10 #include "protocol-simple.h"
12 #include "sample-util.h"
16 struct pa_protocol_simple
*protocol
;
17 struct pa_iochannel
*io
;
18 struct pa_sink_input
*sink_input
;
19 struct pa_source_output
*source_output
;
20 struct pa_client
*client
;
21 struct pa_memblockq
*input_memblockq
, *output_memblockq
;
25 struct pa_memblock
*current_memblock
;
26 size_t memblock_index
, fragment_size
;
30 struct pa_protocol_simple
{
31 struct pa_module
*module
;
33 struct pa_socket_server
*server
;
34 struct pa_idxset
*connections
;
40 struct pa_sample_spec sample_spec
;
41 uint32_t sink_index
, source_index
;
44 #define PLAYBACK_BUFFER_SECONDS (.5)
45 #define PLAYBACK_BUFFER_FRAGMENTS (10)
46 #define RECORD_BUFFER_SECONDS (5)
47 #define RECORD_BUFFER_FRAGMENTS (100)
49 static void connection_free(struct connection
*c
) {
52 pa_idxset_remove_by_data(c
->protocol
->connections
, c
, NULL
);
54 if (c
->playback
.current_memblock
)
55 pa_memblock_unref(c
->playback
.current_memblock
);
57 pa_sink_input_free(c
->sink_input
);
59 pa_source_output_free(c
->source_output
);
61 pa_client_free(c
->client
);
63 pa_iochannel_free(c
->io
);
64 if (c
->input_memblockq
)
65 pa_memblockq_free(c
->input_memblockq
);
66 if (c
->output_memblockq
)
67 pa_memblockq_free(c
->output_memblockq
);
69 c
->protocol
->core
->mainloop
->cancel_fixed(c
->protocol
->core
->mainloop
, c
->fixed_source
);
73 static int do_read(struct connection
*c
) {
74 struct pa_memchunk chunk
;
78 if (!c
->sink_input
|| !(l
= pa_memblockq_missing(c
->input_memblockq
)))
81 if (l
> c
->playback
.fragment_size
)
82 l
= c
->playback
.fragment_size
;
84 if (c
->playback
.current_memblock
)
85 if (c
->playback
.current_memblock
->length
- c
->playback
.memblock_index
< l
) {
86 pa_memblock_unref(c
->playback
.current_memblock
);
87 c
->playback
.current_memblock
= NULL
;
88 c
->playback
.memblock_index
= 0;
91 if (!c
->playback
.current_memblock
) {
92 c
->playback
.current_memblock
= pa_memblock_new(c
->playback
.fragment_size
*2);
93 assert(c
->playback
.current_memblock
&& c
->playback
.current_memblock
->length
>= l
);
94 c
->playback
.memblock_index
= 0;
97 if ((r
= pa_iochannel_read(c
->io
, c
->playback
.current_memblock
->data
+c
->playback
.memblock_index
, l
)) <= 0) {
98 fprintf(stderr
, __FILE__
": read() failed: %s\n", r
== 0 ? "EOF" : strerror(errno
));
102 chunk
.memblock
= c
->playback
.current_memblock
;
103 chunk
.index
= c
->playback
.memblock_index
;
105 assert(chunk
.memblock
);
107 c
->playback
.memblock_index
+= r
;
109 assert(c
->input_memblockq
);
110 pa_memblockq_push_align(c
->input_memblockq
, &chunk
, 0);
111 assert(c
->sink_input
);
112 pa_sink_notify(c
->sink_input
->sink
);
117 static int do_write(struct connection
*c
) {
118 struct pa_memchunk chunk
;
121 if (!c
->source_output
)
124 assert(c
->output_memblockq
);
125 if (pa_memblockq_peek(c
->output_memblockq
, &chunk
) < 0)
128 assert(chunk
.memblock
&& chunk
.length
);
130 if ((r
= pa_iochannel_write(c
->io
, chunk
.memblock
->data
+chunk
.index
, chunk
.length
)) < 0) {
131 pa_memblock_unref(chunk
.memblock
);
132 fprintf(stderr
, "write(): %s\n", strerror(errno
));
136 pa_memblockq_drop(c
->output_memblockq
, r
);
137 pa_memblock_unref(chunk
.memblock
);
143 static void do_work(struct connection
*c
) {
146 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->enable_fixed
);
147 c
->protocol
->core
->mainloop
->enable_fixed(c
->protocol
->core
->mainloop
, c
->fixed_source
, 0);
149 if (pa_iochannel_is_hungup(c
->io
))
152 if (pa_iochannel_is_writable(c
->io
))
156 if (pa_iochannel_is_readable(c
->io
))
166 /*** sink_input callbacks ***/
168 static int sink_input_peek_cb(struct pa_sink_input
*i
, struct pa_memchunk
*chunk
) {
170 assert(i
&& i
->userdata
&& chunk
);
173 if (pa_memblockq_peek(c
->input_memblockq
, chunk
) < 0)
179 static void sink_input_drop_cb(struct pa_sink_input
*i
, size_t length
) {
180 struct connection
*c
= i
->userdata
;
181 assert(i
&& c
&& length
);
183 pa_memblockq_drop(c
->input_memblockq
, length
);
186 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->enable_fixed
);
187 c
->protocol
->core
->mainloop
->enable_fixed(c
->protocol
->core
->mainloop
, c
->fixed_source
, 1);
190 static void sink_input_kill_cb(struct pa_sink_input
*i
) {
191 assert(i
&& i
->userdata
);
192 connection_free((struct connection
*) i
->userdata
);
196 static uint32_t sink_input_get_latency_cb(struct pa_sink_input
*i
) {
197 struct connection
*c
= i
->userdata
;
199 return pa_samples_usec(pa_memblockq_get_length(c
->input_memblockq
), &c
->sink_input
->sample_spec
);
202 /*** source_output callbacks ***/
204 static void source_output_push_cb(struct pa_source_output
*o
, const struct pa_memchunk
*chunk
) {
205 struct connection
*c
= o
->userdata
;
206 assert(o
&& c
&& chunk
);
208 pa_memblockq_push(c
->output_memblockq
, chunk
, 0);
211 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->enable_fixed
);
212 c
->protocol
->core
->mainloop
->enable_fixed(c
->protocol
->core
->mainloop
, c
->fixed_source
, 1);
215 static void source_output_kill_cb(struct pa_source_output
*o
) {
216 assert(o
&& o
->userdata
);
217 connection_free((struct connection
*) o
->userdata
);
220 /*** client callbacks ***/
222 static void client_kill_cb(struct pa_client
*c
) {
223 assert(c
&& c
->userdata
);
224 connection_free((struct connection
*) c
->userdata
);
227 /*** pa_iochannel callbacks ***/
229 static void io_callback(struct pa_iochannel
*io
, void *userdata
) {
230 struct connection
*c
= userdata
;
231 assert(io
&& c
&& c
->io
== io
);
236 /*** fixed callback ***/
238 static void fixed_callback(struct pa_mainloop_api
*a
, void *id
, void *userdata
) {
239 struct connection
*c
= userdata
;
240 assert(a
&& c
&& c
->fixed_source
== id
);
245 /*** socket_server callbacks ***/
247 static void on_connection(struct pa_socket_server
*s
, struct pa_iochannel
*io
, void *userdata
) {
248 struct pa_protocol_simple
*p
= userdata
;
249 struct connection
*c
= NULL
;
251 assert(s
&& io
&& p
);
253 c
= malloc(sizeof(struct connection
));
256 c
->sink_input
= NULL
;
257 c
->source_output
= NULL
;
258 c
->fixed_source
= NULL
;
259 c
->input_memblockq
= c
->output_memblockq
= NULL
;
261 c
->playback
.current_memblock
= NULL
;
262 c
->playback
.memblock_index
= 0;
263 c
->playback
.fragment_size
= 0;
265 pa_iochannel_socket_peer_to_string(io
, cname
, sizeof(cname
));
266 c
->client
= pa_client_new(p
->core
, "SIMPLE", cname
);
268 c
->client
->owner
= p
->module
;
269 c
->client
->kill
= client_kill_cb
;
270 c
->client
->userdata
= c
;
272 if (p
->mode
& PLAYBACK
) {
273 struct pa_sink
*sink
;
276 if (!(sink
= pa_idxset_get_by_index(p
->core
->sinks
, p
->sink_index
)))
277 if (!(sink
= pa_sink_get_default(p
->core
))) {
278 fprintf(stderr
, "Failed to get sink.\n");
282 c
->sink_input
= pa_sink_input_new(sink
, c
->client
->name
, &p
->sample_spec
);
283 if (!c
->sink_input
) {
284 fprintf(stderr
, "Failed to create sink input.\n");
287 c
->sink_input
->owner
= p
->module
;
288 c
->sink_input
->client
= c
->client
;
290 c
->sink_input
->peek
= sink_input_peek_cb
;
291 c
->sink_input
->drop
= sink_input_drop_cb
;
292 c
->sink_input
->kill
= sink_input_kill_cb
;
293 c
->sink_input
->get_latency
= sink_input_get_latency_cb
;
294 c
->sink_input
->userdata
= c
;
296 l
= (size_t) (pa_bytes_per_second(&p
->sample_spec
)*PLAYBACK_BUFFER_SECONDS
);
297 c
->input_memblockq
= pa_memblockq_new(l
, 0, pa_sample_size(&p
->sample_spec
), l
/2, l
/PLAYBACK_BUFFER_FRAGMENTS
);
298 assert(c
->input_memblockq
);
299 pa_iochannel_socket_set_rcvbuf(io
, l
/PLAYBACK_BUFFER_FRAGMENTS
*5);
300 c
->playback
.fragment_size
= l
/10;
303 if (p
->mode
& RECORD
) {
304 struct pa_source
*source
;
307 if (!(source
= pa_idxset_get_by_index(p
->core
->sources
, p
->source_index
)))
308 if (!(source
= pa_source_get_default(p
->core
))) {
309 fprintf(stderr
, "Failed to get source.\n");
313 c
->source_output
= pa_source_output_new(source
, c
->client
->name
, &p
->sample_spec
);
314 if (!c
->source_output
) {
315 fprintf(stderr
, "Failed to create source output.\n");
318 c
->source_output
->owner
= p
->module
;
319 c
->source_output
->client
= c
->client
;
321 c
->source_output
->push
= source_output_push_cb
;
322 c
->source_output
->kill
= source_output_kill_cb
;
323 c
->source_output
->userdata
= c
;
325 l
= (size_t) (pa_bytes_per_second(&p
->sample_spec
)*RECORD_BUFFER_SECONDS
);
326 c
->output_memblockq
= pa_memblockq_new(l
, 0, pa_sample_size(&p
->sample_spec
), 0, 0);
327 pa_iochannel_socket_set_sndbuf(io
, l
/RECORD_BUFFER_FRAGMENTS
*2);
330 pa_iochannel_set_callback(c
->io
, io_callback
, c
);
331 pa_idxset_put(p
->connections
, c
, NULL
);
333 c
->fixed_source
= p
->core
->mainloop
->source_fixed(p
->core
->mainloop
, fixed_callback
, c
);
334 assert(c
->fixed_source
);
335 p
->core
->mainloop
->enable_fixed(p
->core
->mainloop
, c
->fixed_source
, 0);
344 struct pa_protocol_simple
* pa_protocol_simple_new(struct pa_core
*core
, struct pa_socket_server
*server
, struct pa_module
*m
, struct pa_modargs
*ma
) {
345 struct pa_protocol_simple
* p
= NULL
;
347 assert(core
&& server
&& ma
);
349 p
= malloc(sizeof(struct pa_protocol_simple
));
351 memset(p
, 0, sizeof(struct pa_protocol_simple
));
356 p
->connections
= pa_idxset_new(NULL
, NULL
);
358 p
->sample_spec
= core
->default_sample_spec
;
359 if (pa_modargs_get_sample_spec(ma
, &p
->sample_spec
) < 0) {
360 fprintf(stderr
, "Failed to parse sample type specification.\n");
364 if (pa_modargs_get_source_index(ma
, core
, &p
->source_index
) < 0) {
365 fprintf(stderr
, __FILE__
": source does not exist.\n");
369 if (pa_modargs_get_sink_index(ma
, core
, &p
->sink_index
) < 0) {
370 fprintf(stderr
, __FILE__
": sink does not exist.\n");
375 if (pa_modargs_get_value_u32(ma
, "record", &enable
) < 0) {
376 fprintf(stderr
, __FILE__
": record= expects a numeric argument.\n");
379 p
->mode
= enable
? RECORD
: 0;
382 if (pa_modargs_get_value_u32(ma
, "playback", &enable
) < 0) {
383 fprintf(stderr
, __FILE__
": playback= expects a numeric argument.\n");
386 p
->mode
|= enable
? PLAYBACK
: 0;
388 if ((p
->mode
& (RECORD
|PLAYBACK
)) == 0) {
389 fprintf(stderr
, __FILE__
": neither playback nor recording enabled for protocol.\n");
393 pa_socket_server_set_callback(p
->server
, on_connection
, p
);
399 pa_protocol_simple_free(p
);
404 void pa_protocol_simple_free(struct pa_protocol_simple
*p
) {
405 struct connection
*c
;
408 if (p
->connections
) {
409 while((c
= pa_idxset_first(p
->connections
, NULL
)))
412 pa_idxset_free(p
->connections
, NULL
, NULL
);
416 pa_socket_server_free(p
->server
);