Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 1 | /* GStreamer OSS4 audio source |
| 2 | * Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net> |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Library General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This library is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Library General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU Library General Public |
| 15 | * License along with this library; if not, write to the |
Tim-Philipp Müller | 230cf41 | 2012-11-04 00:07:18 +0000 | [diff] [blame] | 16 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| 17 | * Boston, MA 02110-1301, USA. |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /** |
| 21 | * SECTION:element-oss4src |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 22 | * |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 23 | * This element lets you record sound using the Open Sound System (OSS) |
| 24 | * version 4. |
Stefan Kost | f8c7629 | 2008-06-16 07:30:34 +0000 | [diff] [blame] | 25 | * |
| 26 | * <refsect2> |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 27 | * <title>Example pipelines</title> |
Stefan Kost | f8c7629 | 2008-06-16 07:30:34 +0000 | [diff] [blame] | 28 | * |[ |
Tim-Philipp Müller | 4bb52bb | 2012-08-26 22:39:55 +0100 | [diff] [blame] | 29 | * gst-launch-1.0 -v oss4src ! queue ! audioconvert ! vorbisenc ! oggmux ! filesink location=mymusic.ogg |
Stefan Kost | f8c7629 | 2008-06-16 07:30:34 +0000 | [diff] [blame] | 30 | * ]| will record sound from your sound card using OSS4 and encode it to an |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 31 | * Ogg/Vorbis file (this will only work if your mixer settings are right |
| 32 | * and the right inputs areenabled etc.) |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 33 | * </refsect2> |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | /* FIXME: make sure we're not doing ioctls from the app thread (e.g. via the |
| 37 | * mixer interface) while recording */ |
| 38 | |
| 39 | #ifdef HAVE_CONFIG_H |
| 40 | #include "config.h" |
| 41 | #endif |
| 42 | |
| 43 | #include <sys/types.h> |
| 44 | #include <sys/stat.h> |
| 45 | #include <sys/ioctl.h> |
| 46 | #include <fcntl.h> |
| 47 | #include <errno.h> |
| 48 | #include <unistd.h> |
| 49 | #include <string.h> |
| 50 | |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 51 | #include <gst/gst-i18n-plugin.h> |
| 52 | |
| 53 | #define NO_LEGACY_MIXER |
| 54 | #include "oss4-audio.h" |
| 55 | #include "oss4-source.h" |
| 56 | #include "oss4-property-probe.h" |
| 57 | #include "oss4-soundcard.h" |
| 58 | |
| 59 | #define GST_OSS4_SOURCE_IS_OPEN(src) (GST_OSS4_SOURCE(src)->fd != -1) |
| 60 | |
| 61 | GST_DEBUG_CATEGORY_EXTERN (oss4src_debug); |
| 62 | #define GST_CAT_DEFAULT oss4src_debug |
| 63 | |
| 64 | #define DEFAULT_DEVICE NULL |
| 65 | #define DEFAULT_DEVICE_NAME NULL |
| 66 | |
| 67 | enum |
| 68 | { |
| 69 | PROP_0, |
| 70 | PROP_DEVICE, |
| 71 | PROP_DEVICE_NAME |
| 72 | }; |
| 73 | |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 74 | #define gst_oss4_source_parent_class parent_class |
| 75 | G_DEFINE_TYPE (GstOss4Source, gst_oss4_source, GST_TYPE_AUDIO_SRC); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 76 | |
| 77 | static void gst_oss4_source_get_property (GObject * object, guint prop_id, |
| 78 | GValue * value, GParamSpec * pspec); |
| 79 | static void gst_oss4_source_set_property (GObject * object, guint prop_id, |
| 80 | const GValue * value, GParamSpec * pspec); |
| 81 | |
| 82 | static void gst_oss4_source_dispose (GObject * object); |
| 83 | static void gst_oss4_source_finalize (GstOss4Source * osssrc); |
| 84 | |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 85 | static GstCaps *gst_oss4_source_getcaps (GstBaseSrc * bsrc, GstCaps * filter); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 86 | |
| 87 | static gboolean gst_oss4_source_open (GstAudioSrc * asrc, |
| 88 | gboolean silent_errors); |
| 89 | static gboolean gst_oss4_source_open_func (GstAudioSrc * asrc); |
| 90 | static gboolean gst_oss4_source_close (GstAudioSrc * asrc); |
| 91 | static gboolean gst_oss4_source_prepare (GstAudioSrc * asrc, |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 92 | GstAudioRingBufferSpec * spec); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 93 | static gboolean gst_oss4_source_unprepare (GstAudioSrc * asrc); |
| 94 | static guint gst_oss4_source_read (GstAudioSrc * asrc, gpointer data, |
Wim Taymans | 497ff16 | 2012-09-10 11:32:25 +0200 | [diff] [blame] | 95 | guint length, GstClockTime * timestamp); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 96 | static guint gst_oss4_source_delay (GstAudioSrc * asrc); |
| 97 | static void gst_oss4_source_reset (GstAudioSrc * asrc); |
| 98 | |
| 99 | static void |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 100 | gst_oss4_source_class_init (GstOss4SourceClass * klass) |
| 101 | { |
| 102 | GObjectClass *gobject_class; |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 103 | GstElementClass *gstelement_class; |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 104 | GstBaseSrcClass *gstbasesrc_class; |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 105 | GstAudioSrcClass *gstaudiosrc_class; |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 106 | GstPadTemplate *templ; |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 107 | |
| 108 | gobject_class = (GObjectClass *) klass; |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 109 | gstelement_class = (GstElementClass *) klass; |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 110 | gstbasesrc_class = (GstBaseSrcClass *) klass; |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 111 | gstaudiosrc_class = (GstAudioSrcClass *) klass; |
| 112 | |
Sebastian Dröge | 2ffcb15 | 2010-06-06 17:57:03 +0200 | [diff] [blame] | 113 | gobject_class->dispose = gst_oss4_source_dispose; |
| 114 | gobject_class->finalize = (GObjectFinalizeFunc) gst_oss4_source_finalize; |
| 115 | gobject_class->get_property = gst_oss4_source_get_property; |
| 116 | gobject_class->set_property = gst_oss4_source_set_property; |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 117 | |
| 118 | gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_oss4_source_getcaps); |
| 119 | |
| 120 | gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_oss4_source_open_func); |
| 121 | gstaudiosrc_class->prepare = GST_DEBUG_FUNCPTR (gst_oss4_source_prepare); |
| 122 | gstaudiosrc_class->unprepare = GST_DEBUG_FUNCPTR (gst_oss4_source_unprepare); |
| 123 | gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_oss4_source_close); |
| 124 | gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_oss4_source_read); |
| 125 | gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_oss4_source_delay); |
| 126 | gstaudiosrc_class->reset = GST_DEBUG_FUNCPTR (gst_oss4_source_reset); |
| 127 | |
| 128 | g_object_class_install_property (gobject_class, PROP_DEVICE, |
| 129 | g_param_spec_string ("device", "Device", |
| 130 | "OSS4 device (e.g. /dev/oss/hdaudio0/pcm0 or /dev/dspN) " |
| 131 | "(NULL = use first available device)", |
Stefan Kost | 77b656e | 2010-10-13 17:13:04 +0300 | [diff] [blame] | 132 | DEFAULT_DEVICE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 133 | |
| 134 | g_object_class_install_property (gobject_class, PROP_DEVICE_NAME, |
| 135 | g_param_spec_string ("device-name", "Device name", |
| 136 | "Human-readable name of the sound device", DEFAULT_DEVICE_NAME, |
Stefan Kost | 77b656e | 2010-10-13 17:13:04 +0300 | [diff] [blame] | 137 | G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 138 | |
| 139 | gst_element_class_set_static_metadata (gstelement_class, |
| 140 | "OSS v4 Audio Source", "Source/Audio", |
| 141 | "Capture from a sound card via OSS version 4", |
| 142 | "Tim-Philipp Müller <tim centricular net>"); |
| 143 | |
| 144 | templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, |
| 145 | gst_oss4_audio_get_template_caps ()); |
| 146 | gst_element_class_add_pad_template (gstelement_class, templ); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | static void |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 150 | gst_oss4_source_init (GstOss4Source * osssrc) |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 151 | { |
| 152 | const gchar *device; |
| 153 | |
| 154 | device = g_getenv ("AUDIODEV"); |
| 155 | if (device == NULL) |
| 156 | device = DEFAULT_DEVICE; |
| 157 | |
| 158 | osssrc->fd = -1; |
| 159 | osssrc->device = g_strdup (device); |
| 160 | osssrc->device_name = g_strdup (DEFAULT_DEVICE_NAME); |
| 161 | osssrc->device_name = NULL; |
| 162 | } |
| 163 | |
| 164 | static void |
| 165 | gst_oss4_source_finalize (GstOss4Source * oss) |
| 166 | { |
| 167 | g_free (oss->device); |
| 168 | oss->device = NULL; |
| 169 | |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 170 | G_OBJECT_CLASS (parent_class)->finalize ((GObject *) (oss)); |
| 171 | } |
| 172 | |
| 173 | static void |
| 174 | gst_oss4_source_dispose (GObject * object) |
| 175 | { |
| 176 | GstOss4Source *oss = GST_OSS4_SOURCE (object); |
| 177 | |
| 178 | if (oss->probed_caps) { |
| 179 | gst_caps_unref (oss->probed_caps); |
| 180 | oss->probed_caps = NULL; |
| 181 | } |
| 182 | |
| 183 | G_OBJECT_CLASS (parent_class)->dispose (object); |
| 184 | } |
| 185 | |
| 186 | static void |
| 187 | gst_oss4_source_set_property (GObject * object, guint prop_id, |
| 188 | const GValue * value, GParamSpec * pspec) |
| 189 | { |
| 190 | GstOss4Source *oss; |
| 191 | |
| 192 | oss = GST_OSS4_SOURCE (object); |
| 193 | |
| 194 | switch (prop_id) { |
| 195 | case PROP_DEVICE: |
| 196 | GST_OBJECT_LOCK (oss); |
| 197 | if (oss->fd == -1) { |
| 198 | g_free (oss->device); |
| 199 | oss->device = g_value_dup_string (value); |
| 200 | g_free (oss->device_name); |
| 201 | oss->device_name = NULL; |
| 202 | } else { |
| 203 | g_warning ("%s: can't change \"device\" property while audio source " |
| 204 | "is open", GST_OBJECT_NAME (oss)); |
| 205 | } |
| 206 | GST_OBJECT_UNLOCK (oss); |
| 207 | break; |
| 208 | default: |
| 209 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| 210 | break; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | static void |
| 215 | gst_oss4_source_get_property (GObject * object, guint prop_id, |
| 216 | GValue * value, GParamSpec * pspec) |
| 217 | { |
| 218 | GstOss4Source *oss; |
| 219 | |
| 220 | oss = GST_OSS4_SOURCE (object); |
| 221 | |
| 222 | switch (prop_id) { |
| 223 | case PROP_DEVICE: |
| 224 | GST_OBJECT_LOCK (oss); |
| 225 | g_value_set_string (value, oss->device); |
| 226 | GST_OBJECT_UNLOCK (oss); |
| 227 | break; |
| 228 | case PROP_DEVICE_NAME: |
| 229 | GST_OBJECT_LOCK (oss); |
| 230 | /* If device is set, try to retrieve the name even if we're not open */ |
| 231 | if (oss->fd == -1 && oss->device != NULL) { |
| 232 | if (gst_oss4_source_open (GST_AUDIO_SRC (oss), TRUE)) { |
| 233 | g_value_set_string (value, oss->device_name); |
| 234 | gst_oss4_source_close (GST_AUDIO_SRC (oss)); |
| 235 | } else { |
Tim-Philipp Müller | 385cd9a | 2008-05-22 15:14:26 +0000 | [diff] [blame] | 236 | gchar *name = NULL; |
| 237 | |
| 238 | gst_oss4_property_probe_find_device_name_nofd (GST_OBJECT (oss), |
| 239 | oss->device, &name); |
| 240 | g_value_set_string (value, name); |
| 241 | g_free (name); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 242 | } |
| 243 | } else { |
| 244 | g_value_set_string (value, oss->device_name); |
| 245 | } |
Tim-Philipp Müller | 385cd9a | 2008-05-22 15:14:26 +0000 | [diff] [blame] | 246 | |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 247 | GST_OBJECT_UNLOCK (oss); |
| 248 | break; |
| 249 | default: |
| 250 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| 251 | break; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | static GstCaps * |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 256 | gst_oss4_source_getcaps (GstBaseSrc * bsrc, GstCaps * filter) |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 257 | { |
| 258 | GstOss4Source *oss; |
| 259 | GstCaps *caps; |
| 260 | |
| 261 | oss = GST_OSS4_SOURCE (bsrc); |
| 262 | |
| 263 | if (oss->fd == -1) { |
Vincent Penquerc'h | f799fb2 | 2012-01-13 17:43:49 +0000 | [diff] [blame] | 264 | caps = gst_oss4_audio_get_template_caps (); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 265 | } else if (oss->probed_caps) { |
| 266 | caps = gst_caps_copy (oss->probed_caps); |
| 267 | } else { |
| 268 | caps = gst_oss4_audio_probe_caps (GST_OBJECT (oss), oss->fd); |
| 269 | if (caps != NULL && !gst_caps_is_empty (caps)) { |
| 270 | oss->probed_caps = gst_caps_copy (caps); |
| 271 | } |
| 272 | } |
| 273 | |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 274 | if (filter && caps) { |
| 275 | GstCaps *intersection; |
| 276 | |
| 277 | intersection = |
| 278 | gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST); |
| 279 | gst_caps_unref (caps); |
| 280 | return intersection; |
| 281 | } else { |
| 282 | return caps; |
| 283 | } |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | /* note: we must not take the object lock here unless we fix up get_property */ |
| 287 | static gboolean |
| 288 | gst_oss4_source_open (GstAudioSrc * asrc, gboolean silent_errors) |
| 289 | { |
| 290 | GstOss4Source *oss; |
| 291 | gchar *device; |
| 292 | int mode; |
| 293 | |
| 294 | oss = GST_OSS4_SOURCE (asrc); |
| 295 | |
| 296 | if (oss->device) |
| 297 | device = g_strdup (oss->device); |
| 298 | else |
| 299 | device = gst_oss4_audio_find_device (GST_OBJECT_CAST (oss)); |
| 300 | |
| 301 | /* desperate times, desperate measures */ |
| 302 | if (device == NULL) |
| 303 | device = g_strdup ("/dev/dsp0"); |
| 304 | |
| 305 | GST_INFO_OBJECT (oss, "Trying to open OSS4 device '%s'", device); |
| 306 | |
| 307 | /* we open in non-blocking mode even if we don't really want to do writes |
| 308 | * non-blocking because we can't be sure that this is really a genuine |
| 309 | * OSS4 device with well-behaved drivers etc. We really don't want to |
| 310 | * hang forever under any circumstances. */ |
| 311 | oss->fd = open (device, O_RDONLY | O_NONBLOCK, 0); |
| 312 | if (oss->fd == -1) { |
| 313 | switch (errno) { |
| 314 | case EBUSY: |
| 315 | goto busy; |
| 316 | case EACCES: |
| 317 | goto no_permission; |
| 318 | default: |
| 319 | goto open_failed; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | GST_INFO_OBJECT (oss, "Opened device"); |
| 324 | |
| 325 | /* Make sure it's OSS4. If it's old OSS, let osssink handle it */ |
| 326 | if (!gst_oss4_audio_check_version (GST_OBJECT_CAST (oss), oss->fd)) |
| 327 | goto legacy_oss; |
| 328 | |
| 329 | /* now remove the non-blocking flag. */ |
| 330 | mode = fcntl (oss->fd, F_GETFL); |
| 331 | mode &= ~O_NONBLOCK; |
| 332 | if (fcntl (oss->fd, F_SETFL, mode) < 0) { |
| 333 | /* some drivers do no support unsetting the non-blocking flag, try to |
| 334 | * close/open the device then. This is racy but we error out properly. */ |
| 335 | GST_WARNING_OBJECT (oss, "failed to unset O_NONBLOCK (buggy driver?), " |
| 336 | "will try to re-open device now"); |
| 337 | gst_oss4_source_close (asrc); |
| 338 | if ((oss->fd = open (device, O_RDONLY, 0)) == -1) |
| 339 | goto non_block; |
| 340 | } |
| 341 | |
| 342 | oss->open_device = device; |
| 343 | |
| 344 | /* not using ENGINEINFO here because it sometimes returns a different and |
| 345 | * less useful name than AUDIOINFO for the same device */ |
| 346 | if (!gst_oss4_property_probe_find_device_name (GST_OBJECT (oss), oss->fd, |
| 347 | oss->open_device, &oss->device_name)) { |
| 348 | oss->device_name = NULL; |
| 349 | } |
| 350 | |
| 351 | return TRUE; |
| 352 | |
| 353 | /* ERRORS */ |
| 354 | busy: |
| 355 | { |
| 356 | if (!silent_errors) { |
| 357 | GST_ELEMENT_ERROR (oss, RESOURCE, BUSY, |
| 358 | (_("Could not open audio device for playback. " |
| 359 | "Device is being used by another application.")), (NULL)); |
| 360 | } |
| 361 | g_free (device); |
| 362 | return FALSE; |
| 363 | } |
| 364 | no_permission: |
| 365 | { |
| 366 | if (!silent_errors) { |
| 367 | GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_READ, |
Jan Schmidt | 11c7f35 | 2008-10-12 21:52:27 +0000 | [diff] [blame] | 368 | (_("Could not open audio device for playback. " |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 369 | "You don't have permission to open the device.")), |
| 370 | GST_ERROR_SYSTEM); |
| 371 | } |
| 372 | g_free (device); |
| 373 | return FALSE; |
| 374 | } |
| 375 | open_failed: |
| 376 | { |
| 377 | if (!silent_errors) { |
| 378 | GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_READ, |
| 379 | (_("Could not open audio device for playback.")), GST_ERROR_SYSTEM); |
| 380 | } |
| 381 | g_free (device); |
| 382 | return FALSE; |
| 383 | } |
| 384 | legacy_oss: |
| 385 | { |
| 386 | gst_oss4_source_close (asrc); |
| 387 | if (!silent_errors) { |
| 388 | GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_READ, |
Jan Schmidt | 11c7f35 | 2008-10-12 21:52:27 +0000 | [diff] [blame] | 389 | (_("Could not open audio device for playback. " |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 390 | "This version of the Open Sound System is not supported by this " |
| 391 | "element.")), ("Try the 'osssink' element instead")); |
| 392 | } |
| 393 | g_free (device); |
| 394 | return FALSE; |
| 395 | } |
| 396 | non_block: |
| 397 | { |
| 398 | if (!silent_errors) { |
| 399 | GST_ELEMENT_ERROR (oss, RESOURCE, SETTINGS, (NULL), |
| 400 | ("Unable to set device %s into non-blocking mode: %s", |
| 401 | oss->device, g_strerror (errno))); |
| 402 | } |
| 403 | g_free (device); |
| 404 | return FALSE; |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | static gboolean |
| 409 | gst_oss4_source_open_func (GstAudioSrc * asrc) |
| 410 | { |
| 411 | return gst_oss4_source_open (asrc, FALSE); |
| 412 | } |
| 413 | |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 414 | static gboolean |
| 415 | gst_oss4_source_close (GstAudioSrc * asrc) |
| 416 | { |
| 417 | GstOss4Source *oss; |
| 418 | |
| 419 | oss = GST_OSS4_SOURCE (asrc); |
| 420 | |
| 421 | if (oss->fd != -1) { |
| 422 | GST_DEBUG_OBJECT (oss, "closing device"); |
| 423 | close (oss->fd); |
| 424 | oss->fd = -1; |
| 425 | } |
| 426 | |
| 427 | oss->bytes_per_sample = 0; |
| 428 | |
| 429 | gst_caps_replace (&oss->probed_caps, NULL); |
| 430 | |
| 431 | g_free (oss->open_device); |
| 432 | oss->open_device = NULL; |
| 433 | |
| 434 | g_free (oss->device_name); |
| 435 | oss->device_name = NULL; |
| 436 | |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 437 | return TRUE; |
| 438 | } |
| 439 | |
| 440 | static gboolean |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 441 | gst_oss4_source_prepare (GstAudioSrc * asrc, GstAudioRingBufferSpec * spec) |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 442 | { |
| 443 | GstOss4Source *oss; |
| 444 | |
| 445 | oss = GST_OSS4_SOURCE (asrc); |
| 446 | |
| 447 | if (!gst_oss4_audio_set_format (GST_OBJECT_CAST (oss), oss->fd, spec)) { |
| 448 | GST_WARNING_OBJECT (oss, "Couldn't set requested format %" GST_PTR_FORMAT, |
| 449 | spec->caps); |
| 450 | return FALSE; |
| 451 | } |
| 452 | |
Mark Nauwelaerts | a5ff454 | 2012-04-20 18:13:01 +0200 | [diff] [blame] | 453 | oss->bytes_per_sample = GST_AUDIO_INFO_BPF (&spec->info); |
| 454 | |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 455 | return TRUE; |
| 456 | } |
| 457 | |
| 458 | static gboolean |
| 459 | gst_oss4_source_unprepare (GstAudioSrc * asrc) |
| 460 | { |
| 461 | /* could do a SNDCTL_DSP_HALT, but the OSS manual recommends a close/open, |
| 462 | * since HALT won't properly reset some devices, apparently */ |
| 463 | |
| 464 | if (!gst_oss4_source_close (asrc)) |
| 465 | goto couldnt_close; |
| 466 | |
| 467 | if (!gst_oss4_source_open_func (asrc)) |
| 468 | goto couldnt_reopen; |
| 469 | |
| 470 | return TRUE; |
| 471 | |
| 472 | /* ERRORS */ |
| 473 | couldnt_close: |
| 474 | { |
| 475 | GST_DEBUG_OBJECT (asrc, "Couldn't close the audio device"); |
| 476 | return FALSE; |
| 477 | } |
| 478 | couldnt_reopen: |
| 479 | { |
| 480 | GST_DEBUG_OBJECT (asrc, "Couldn't reopen the audio device"); |
| 481 | return FALSE; |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | static guint |
Wim Taymans | 497ff16 | 2012-09-10 11:32:25 +0200 | [diff] [blame] | 486 | gst_oss4_source_read (GstAudioSrc * asrc, gpointer data, guint length, |
| 487 | GstClockTime * timestamp) |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 488 | { |
| 489 | GstOss4Source *oss; |
| 490 | int n; |
| 491 | |
| 492 | oss = GST_OSS4_SOURCE_CAST (asrc); |
| 493 | |
| 494 | n = read (oss->fd, data, length); |
| 495 | GST_LOG_OBJECT (asrc, "%u bytes, %u samples", n, n / oss->bytes_per_sample); |
| 496 | |
| 497 | if (G_UNLIKELY (n < 0)) { |
| 498 | switch (errno) { |
| 499 | case ENOTSUP: |
| 500 | case EACCES:{ |
| 501 | /* This is the most likely cause, I think */ |
| 502 | GST_ELEMENT_ERROR (asrc, RESOURCE, READ, |
| 503 | (_("Recording is not supported by this audio device.")), |
| 504 | ("read: %s (device: %s) (maybe this is an output-only device?)", |
| 505 | g_strerror (errno), oss->open_device)); |
| 506 | break; |
| 507 | } |
| 508 | default:{ |
| 509 | GST_ELEMENT_ERROR (asrc, RESOURCE, READ, |
| 510 | (_("Error recording from audio device.")), |
| 511 | ("read: %s (device: %s)", g_strerror (errno), oss->open_device)); |
| 512 | break; |
| 513 | } |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | return (guint) n; |
| 518 | } |
| 519 | |
| 520 | static guint |
| 521 | gst_oss4_source_delay (GstAudioSrc * asrc) |
| 522 | { |
| 523 | audio_buf_info info = { 0, }; |
| 524 | GstOss4Source *oss; |
| 525 | guint delay; |
| 526 | |
| 527 | oss = GST_OSS4_SOURCE_CAST (asrc); |
| 528 | |
| 529 | if (ioctl (oss->fd, SNDCTL_DSP_GETISPACE, &info) == -1) { |
| 530 | GST_LOG_OBJECT (oss, "GETISPACE failed: %s", g_strerror (errno)); |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | delay = (info.fragstotal * info.fragsize) - info.bytes; |
Julien Moutte | b33c37c | 2008-04-11 08:13:22 +0000 | [diff] [blame] | 535 | GST_LOG_OBJECT (oss, "fragstotal:%d, fragsize:%d, bytes:%d, delay:%d", |
| 536 | info.fragstotal, info.fragsize, info.bytes, delay); |
Tim-Philipp Müller | 5f73998 | 2008-04-02 20:18:58 +0000 | [diff] [blame] | 537 | return delay; |
| 538 | } |
| 539 | |
| 540 | static void |
| 541 | gst_oss4_source_reset (GstAudioSrc * asrc) |
| 542 | { |
| 543 | /* There's nothing we can do here really: OSS can't handle access to the |
| 544 | * same device/fd from multiple threads and might deadlock or blow up in |
| 545 | * other ways if we try an ioctl SNDCTL_DSP_HALT or similar */ |
| 546 | } |