4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
32 #include "sink-input.h"
35 #include "sample-util.h"
37 #include "subscribe.h"
39 #define MAX_MIX_CHANNELS 32
41 struct pa_sink
* pa_sink_new(struct pa_core
*core
, const char *name
, int fail
, const struct pa_sample_spec
*spec
) {
46 assert(core
&& name
&& *name
&& spec
);
48 s
= pa_xmalloc(sizeof(struct pa_sink
));
50 if (!(name
= pa_namereg_register(core
, name
, PA_NAMEREG_SINK
, s
, fail
))) {
55 s
->name
= pa_xstrdup(name
);
56 s
->description
= NULL
;
60 s
->sample_spec
= *spec
;
61 s
->inputs
= pa_idxset_new(NULL
, NULL
);
63 n
= pa_sprintf_malloc("%s_monitor", name
);
64 s
->monitor_source
= pa_source_new(core
, n
, 0, spec
);
65 assert(s
->monitor_source
);
67 s
->monitor_source
->monitor_of
= s
;
68 s
->monitor_source
->description
= pa_sprintf_malloc("Monitor source of sink '%s'", s
->name
);
70 s
->volume
= PA_VOLUME_NORM
;
73 s
->get_latency
= NULL
;
76 r
= pa_idxset_put(core
->sinks
, s
, &s
->index
);
77 assert(s
->index
!= PA_IDXSET_INVALID
&& r
>= 0);
79 pa_sample_spec_snprint(st
, sizeof(st
), spec
);
80 fprintf(stderr
, "sink: created %u \"%s\" with sample spec \"%s\"\n", s
->index
, s
->name
, st
);
82 pa_subscription_post(core
, PA_SUBSCRIPTION_EVENT_SINK
| PA_SUBSCRIPTION_EVENT_NEW
, s
->index
);
87 void pa_sink_free(struct pa_sink
*s
) {
88 struct pa_sink_input
*i
, *j
= NULL
;
91 pa_namereg_unregister(s
->core
, s
->name
);
93 while ((i
= pa_idxset_first(s
->inputs
, NULL
))) {
95 pa_sink_input_kill(i
);
98 pa_idxset_free(s
->inputs
, NULL
, NULL
);
100 pa_source_free(s
->monitor_source
);
101 pa_idxset_remove_by_data(s
->core
->sinks
, s
, NULL
);
103 fprintf(stderr
, "sink: freed %u \"%s\"\n", s
->index
, s
->name
);
105 pa_subscription_post(s
->core
, PA_SUBSCRIPTION_EVENT_SINK
| PA_SUBSCRIPTION_EVENT_REMOVE
, s
->index
);
108 pa_xfree(s
->description
);
112 void pa_sink_notify(struct pa_sink
*s
) {
119 static unsigned fill_mix_info(struct pa_sink
*s
, struct pa_mix_info
*info
, unsigned maxinfo
) {
120 uint32_t index
= PA_IDXSET_INVALID
;
121 struct pa_sink_input
*i
;
126 for (i
= pa_idxset_first(s
->inputs
, &index
); maxinfo
> 0 && i
; i
= pa_idxset_next(s
->inputs
, &index
)) {
127 if (pa_sink_input_peek(i
, &info
->chunk
) < 0)
130 info
->volume
= i
->volume
;
132 assert(info
->chunk
.memblock
&& info
->chunk
.memblock
->data
&& info
->chunk
.length
);
143 static void inputs_drop(struct pa_sink
*s
, struct pa_mix_info
*info
, unsigned maxinfo
, size_t length
) {
146 for (; maxinfo
> 0; maxinfo
--, info
++) {
147 struct pa_sink_input
*i
= info
->userdata
;
148 assert(i
&& info
->chunk
.memblock
);
150 pa_memblock_unref(info
->chunk
.memblock
);
151 pa_sink_input_drop(i
, length
);
155 int pa_sink_render(struct pa_sink
*s
, size_t length
, struct pa_memchunk
*result
) {
156 struct pa_mix_info info
[MAX_MIX_CHANNELS
];
159 assert(s
&& length
&& result
);
161 n
= fill_mix_info(s
, info
, MAX_MIX_CHANNELS
);
167 uint32_t volume
= PA_VOLUME_NORM
;
168 struct pa_sink_input
*i
= info
[0].userdata
;
170 *result
= info
[0].chunk
;
171 pa_memblock_ref(result
->memblock
);
173 if (result
->length
> length
)
174 result
->length
= length
;
178 if (s
->volume
!= PA_VOLUME_NORM
|| info
[0].volume
!= PA_VOLUME_NORM
)
179 volume
= pa_volume_multiply(s
->volume
, info
[0].volume
);
181 if (volume
!= PA_VOLUME_NORM
) {
182 pa_memchunk_make_writable(result
, s
->core
->memblock_stat
);
183 pa_volume_memchunk(result
, &s
->sample_spec
, volume
);
186 result
->memblock
= pa_memblock_new(length
, s
->core
->memblock_stat
);
187 assert(result
->memblock
);
189 result
->length
= l
= pa_mix(info
, n
, result
->memblock
->data
, length
, &s
->sample_spec
, s
->volume
);
195 inputs_drop(s
, info
, n
, l
);
197 assert(s
->monitor_source
);
198 pa_source_post(s
->monitor_source
, result
);
203 int pa_sink_render_into(struct pa_sink
*s
, struct pa_memchunk
*target
) {
204 struct pa_mix_info info
[MAX_MIX_CHANNELS
];
207 assert(s
&& target
&& target
->length
&& target
->memblock
&& target
->memblock
->data
);
209 n
= fill_mix_info(s
, info
, MAX_MIX_CHANNELS
);
215 uint32_t volume
= PA_VOLUME_NORM
;
216 struct pa_sink_info
*i
= info
[0].userdata
;
220 if (l
> info
[0].chunk
.length
)
221 l
= info
[0].chunk
.length
;
223 memcpy(target
->memblock
->data
+target
->index
, info
[0].chunk
.memblock
->data
+ info
[0].chunk
.index
, l
);
226 if (s
->volume
!= PA_VOLUME_NORM
|| info
[0].volume
!= PA_VOLUME_NORM
)
227 volume
= pa_volume_multiply(s
->volume
, info
[0].volume
);
229 if (volume
!= PA_VOLUME_NORM
)
230 pa_volume_memchunk(target
, &s
->sample_spec
, volume
);
232 target
->length
= l
= pa_mix(info
, n
, target
->memblock
->data
+target
->index
, target
->length
, &s
->sample_spec
, s
->volume
);
235 inputs_drop(s
, info
, n
, l
);
237 assert(s
->monitor_source
);
238 pa_source_post(s
->monitor_source
, target
);
243 void pa_sink_render_into_full(struct pa_sink
*s
, struct pa_memchunk
*target
) {
244 struct pa_memchunk chunk
;
246 assert(s
&& target
&& target
->memblock
&& target
->length
&& target
->memblock
->data
);
255 if (pa_sink_render_into(s
, &chunk
) < 0)
266 pa_silence_memchunk(&chunk
, &s
->sample_spec
);
270 uint32_t pa_sink_get_latency(struct pa_sink
*s
) {
276 return s
->get_latency(s
);
279 void pa_sink_set_owner(struct pa_sink
*sink
, struct pa_module
*m
) {
282 if (sink
->monitor_source
)
283 pa_source_set_owner(sink
->monitor_source
, m
);
286 void pa_sink_set_volume(struct pa_sink
*sink
, pa_volume_t volume
) {
289 if (sink
->volume
!= volume
) {
290 sink
->volume
= volume
;
291 pa_subscription_post(sink
->core
, PA_SUBSCRIPTION_EVENT_SINK
|PA_SUBSCRIPTION_EVENT_CHANGE
, sink
->index
);