3 * Copyright (c) 2014 Lukasz Marek
4 * Copyright (c) 2011 Luca Barbato <lu_zero@gentoo.org>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "pulse_audio_common.h"
24 #include "libavutil/attributes.h"
25 #include "libavutil/avstring.h"
26 #include "libavutil/mem.h"
27 #include "libavutil/avassert.h"
29 pa_sample_format_t av_cold ff_codec_id_to_pulse_format(enum AVCodecID codec_id)
32 case AV_CODEC_ID_PCM_U8: return PA_SAMPLE_U8;
33 case AV_CODEC_ID_PCM_ALAW: return PA_SAMPLE_ALAW;
34 case AV_CODEC_ID_PCM_MULAW: return PA_SAMPLE_ULAW;
35 case AV_CODEC_ID_PCM_S16LE: return PA_SAMPLE_S16LE;
36 case AV_CODEC_ID_PCM_S16BE: return PA_SAMPLE_S16BE;
37 case AV_CODEC_ID_PCM_F32LE: return PA_SAMPLE_FLOAT32LE;
38 case AV_CODEC_ID_PCM_F32BE: return PA_SAMPLE_FLOAT32BE;
39 case AV_CODEC_ID_PCM_S32LE: return PA_SAMPLE_S32LE;
40 case AV_CODEC_ID_PCM_S32BE: return PA_SAMPLE_S32BE;
41 case AV_CODEC_ID_PCM_S24LE: return PA_SAMPLE_S24LE;
42 case AV_CODEC_ID_PCM_S24BE: return PA_SAMPLE_S24BE;
43 default: return PA_SAMPLE_INVALID;
47 enum PulseAudioContextState {
48 PULSE_CONTEXT_INITIALIZING,
50 PULSE_CONTEXT_FINISHED
53 typedef struct PulseAudioDeviceList {
54 AVDeviceInfoList *devices;
58 } PulseAudioDeviceList;
60 static void pa_state_cb(pa_context *c, void *userdata)
62 enum PulseAudioContextState *context_state = userdata;
64 switch (pa_context_get_state(c)) {
65 case PA_CONTEXT_FAILED:
66 case PA_CONTEXT_TERMINATED:
67 *context_state = PULSE_CONTEXT_FINISHED;
69 case PA_CONTEXT_READY:
70 *context_state = PULSE_CONTEXT_READY;
77 void ff_pulse_audio_disconnect_context(pa_mainloop **pa_ml, pa_context **pa_ctx)
83 pa_context_set_state_callback(*pa_ctx, NULL, NULL);
84 pa_context_disconnect(*pa_ctx);
85 pa_context_unref(*pa_ctx);
88 pa_mainloop_free(*pa_ml);
93 int ff_pulse_audio_connect_context(pa_mainloop **pa_ml, pa_context **pa_ctx,
94 const char *server, const char *description)
97 pa_mainloop_api *pa_mlapi = NULL;
98 enum PulseAudioContextState context_state = PULSE_CONTEXT_INITIALIZING;
106 if (!(*pa_ml = pa_mainloop_new()))
107 return AVERROR(ENOMEM);
108 if (!(pa_mlapi = pa_mainloop_get_api(*pa_ml))) {
109 ret = AVERROR_EXTERNAL;
112 if (!(*pa_ctx = pa_context_new(pa_mlapi, description))) {
113 ret = AVERROR(ENOMEM);
116 pa_context_set_state_callback(*pa_ctx, pa_state_cb, &context_state);
117 if (pa_context_connect(*pa_ctx, server, 0, NULL) < 0) {
118 ret = AVERROR_EXTERNAL;
122 while (context_state == PULSE_CONTEXT_INITIALIZING)
123 pa_mainloop_iterate(*pa_ml, 1, NULL);
124 if (context_state == PULSE_CONTEXT_FINISHED) {
125 ret = AVERROR_EXTERNAL;
131 ff_pulse_audio_disconnect_context(pa_ml, pa_ctx);
135 static void pulse_add_detected_device(PulseAudioDeviceList *info,
136 const char *name, const char *description)
139 AVDeviceInfo *new_device = NULL;
141 if (info->error_code)
144 new_device = av_mallocz(sizeof(AVDeviceInfo));
146 info->error_code = AVERROR(ENOMEM);
150 new_device->device_description = av_strdup(description);
151 new_device->device_name = av_strdup(name);
153 if (!new_device->device_description || !new_device->device_name) {
154 info->error_code = AVERROR(ENOMEM);
158 if ((ret = av_dynarray_add_nofree(&info->devices->devices,
159 &info->devices->nb_devices, new_device)) < 0) {
160 info->error_code = ret;
166 av_freep(&new_device->device_description);
167 av_freep(&new_device->device_name);
172 static void pulse_audio_source_device_cb(pa_context *c, const pa_source_info *dev,
173 int eol, void *userdata)
176 pulse_add_detected_device(userdata, dev->name, dev->description);
179 static void pulse_audio_sink_device_cb(pa_context *c, const pa_sink_info *dev,
180 int eol, void *userdata)
183 pulse_add_detected_device(userdata, dev->name, dev->description);
186 static void pulse_server_info_cb(pa_context *c, const pa_server_info *i, void *userdata)
188 PulseAudioDeviceList *info = userdata;
190 info->default_device = av_strdup(i->default_sink_name);
192 info->default_device = av_strdup(i->default_source_name);
193 if (!info->default_device)
194 info->error_code = AVERROR(ENOMEM);
197 int ff_pulse_audio_get_devices(AVDeviceInfoList *devices, const char *server, int output)
199 pa_mainloop *pa_ml = NULL;
200 pa_operation *pa_op = NULL;
201 pa_context *pa_ctx = NULL;
202 enum pa_operation_state op_state;
203 PulseAudioDeviceList dev_list = { 0 };
206 dev_list.output = output;
207 dev_list.devices = devices;
209 return AVERROR(EINVAL);
210 devices->nb_devices = 0;
211 devices->devices = NULL;
213 if ((dev_list.error_code = ff_pulse_audio_connect_context(&pa_ml, &pa_ctx, server, "Query devices")) < 0)
217 pa_op = pa_context_get_sink_info_list(pa_ctx, pulse_audio_sink_device_cb, &dev_list);
219 pa_op = pa_context_get_source_info_list(pa_ctx, pulse_audio_source_device_cb, &dev_list);
220 while ((op_state = pa_operation_get_state(pa_op)) == PA_OPERATION_RUNNING)
221 pa_mainloop_iterate(pa_ml, 1, NULL);
222 if (op_state != PA_OPERATION_DONE)
223 dev_list.error_code = AVERROR_EXTERNAL;
224 pa_operation_unref(pa_op);
225 if (dev_list.error_code < 0)
228 pa_op = pa_context_get_server_info(pa_ctx, pulse_server_info_cb, &dev_list);
229 while ((op_state = pa_operation_get_state(pa_op)) == PA_OPERATION_RUNNING)
230 pa_mainloop_iterate(pa_ml, 1, NULL);
231 if (op_state != PA_OPERATION_DONE)
232 dev_list.error_code = AVERROR_EXTERNAL;
233 pa_operation_unref(pa_op);
234 if (dev_list.error_code < 0)
237 devices->default_device = -1;
238 for (i = 0; i < devices->nb_devices; i++) {
239 if (!strcmp(devices->devices[i]->device_name, dev_list.default_device)) {
240 devices->default_device = i;
246 av_free(dev_list.default_device);
247 ff_pulse_audio_disconnect_context(&pa_ml, &pa_ctx);
248 return dev_list.error_code;