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gst-libs/gst/audio/gstaudiosrc.*: Implement open_device and close_device in the ring buffer, like gstaudiosink.

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Original commit message from CVS:
2005-08-22  Andy Wingo  <wingo@pobox.com>

* gst-libs/gst/audio/gstaudiosrc.h:
* gst-libs/gst/audio/gstaudiosrc.c: Implement open_device and
close_device in the ring buffer, like gstaudiosink.

* ext/alsa/gstalsamixer.h:
* ext/alsa/gstalsamixer.c: Not a GObject any more. Include a nifty
macro to implement the interface without much code. Cleanups.

* ext/alsa/gstalsasrc.h:
* ext/alsa/gstalsasrc.c: Be a mixer. Open device and mixer in
READY.

* ext/alsa/Makefile.am: Add new files.
* ext/alsa/gstalsamixerelement.c:
* ext/alsa/gstalsamixerelement.c: Split element code out from
mixer code so that alsasrc can be a mixer too.
This commit is contained in:
Andy Wingo 2005-08-22 15:11:31 +00:00
parent 6d828d3b93
commit 13b122a106
11 changed files with 607 additions and 328 deletions
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19
ChangeLog
View file

@ -1,3 +1,22 @@
2005-08-22 Andy Wingo <wingo@pobox.com>
* gst-libs/gst/audio/gstaudiosrc.h:
* gst-libs/gst/audio/gstaudiosrc.c: Implement open_device and
close_device in the ring buffer, like gstaudiosink.
* ext/alsa/gstalsamixer.h:
* ext/alsa/gstalsamixer.c: Not a GObject any more. Include a nifty
macro to implement the interface without much code. Cleanups.
* ext/alsa/gstalsasrc.h:
* ext/alsa/gstalsasrc.c: Be a mixer. Open device and mixer in
READY.
* ext/alsa/Makefile.am: Add new files.
* ext/alsa/gstalsamixerelement.c:
* ext/alsa/gstalsamixerelement.c: Split element code out from
mixer code so that alsasrc can be a mixer too.
2005-08-21 Thomas Vander Stichele <thomas at apestaart dot org> 2005-08-21 Thomas Vander Stichele <thomas at apestaart dot org>
* check/elements/volume.c: (setup_volume), (cleanup_volume), * check/elements/volume.c: (setup_volume), (cleanup_volume),

2
ext/alsa/Makefile.am
View file

@ -3,6 +3,7 @@ plugin_LTLIBRARIES = libgstalsa.la
libgstalsa_la_SOURCES = \ libgstalsa_la_SOURCES = \
gstalsaplugin.c \ gstalsaplugin.c \
gstalsamixer.c \ gstalsamixer.c \
gstalsamixerelement.c \
gstalsamixertrack.c \ gstalsamixertrack.c \
gstalsamixeroptions.c \ gstalsamixeroptions.c \
gstalsasink.c \ gstalsasink.c \
@ -20,5 +21,6 @@ noinst_HEADERS = \
gstalsasink.h \ gstalsasink.h \
gstalsasrc.h \ gstalsasrc.h \
gstalsamixer.h \ gstalsamixer.h \
gstalsamixerelement.h \
gstalsamixertrack.h \ gstalsamixertrack.h \
gstalsamixeroptions.h gstalsamixeroptions.h

374
ext/alsa/gstalsamixer.c
View file

@ -25,194 +25,92 @@
#include "gstalsamixer.h" #include "gstalsamixer.h"
static GstElementDetails gst_alsa_mixer_details = /* First some utils, then the mixer implementation */
GST_ELEMENT_DETAILS ("Alsa Mixer",
"Generic/Audio",
"Control sound input and output levels with ALSA",
"Leif Johnson <leif@ambient.2y.net>");
#define GST_BOILERPLATE_WITH_INTERFACE(type, type_as_function, parent_type, \
parent_type_as_macro, interface_type, interface_type_as_macro, \
interface_as_function) \
\
static void interface_as_function ## _interface_init (interface_type ## Class *klass); \
static gboolean interface_as_function ## _supported (type *object, GType iface_type); \
\
static void \
type_as_function ## _implements_interface_init (GstImplementsInterfaceClass *klass) \
{ \
klass->supported = (gpointer)interface_as_function ## _supported; \
} \
\
static void \
type_as_function ## _init_interfaces (GType type) \
{ \
static const GInterfaceInfo implements_iface_info = { \
(GInterfaceInitFunc) type_as_function ## _implements_interface_init, \
NULL, \
NULL, \
}; \
static const GInterfaceInfo iface_info = { \
(GInterfaceInitFunc) interface_as_function ## _interface_init, \
NULL, \
NULL, \
}; \
\
g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE, \
&implements_iface_info); \
g_type_add_interface_static (type, interface_type_as_macro, &iface_info); \
} \
\
GST_BOILERPLATE_FULL (type, type_as_function, parent_type, \
parent_type_as_macro, type_as_function ## _init_interfaces)
GST_BOILERPLATE_WITH_INTERFACE (GstAlsaMixer, gst_alsa_mixer, GstElement,
GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER, gst_alsa_mixer);
static GstElementStateReturn gst_alsa_mixer_change_state (GstElement * element);
/* GstMixer */
static const GList *gst_alsa_mixer_list_tracks (GstMixer * mixer);
static void gst_alsa_mixer_set_volume (GstMixer * mixer,
GstMixerTrack * track, gint * volumes);
static void gst_alsa_mixer_get_volume (GstMixer * mixer,
GstMixerTrack * track, gint * volumes);
static void gst_alsa_mixer_set_record (GstMixer * mixer,
GstMixerTrack * track, gboolean record);
static void gst_alsa_mixer_set_mute (GstMixer * mixer,
GstMixerTrack * track, gboolean mute);
static void gst_alsa_mixer_set_option (GstMixer * mixer,
GstMixerOptions * opts, gchar * value);
static const gchar *gst_alsa_mixer_get_option (GstMixer * mixer,
GstMixerOptions * opts);
static void
gst_alsa_mixer_base_init (gpointer klass)
{
gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
&gst_alsa_mixer_details);
}
static void
gst_alsa_mixer_class_init (GstAlsaMixerClass * klass)
{
GstElementClass *element_class;
element_class = (GstElementClass *) klass;
element_class->change_state = gst_alsa_mixer_change_state;
}
static void
gst_alsa_mixer_init (GstAlsaMixer * mixer)
{
mixer->mixer_handle = NULL;
}
static gboolean static gboolean
gst_alsa_mixer_open (GstAlsaMixer * mixer) gst_alsa_mixer_open (GstAlsaMixer * mixer)
{ {
gint err, device; gint err, devicenum;
gchar *nocomma = NULL;
g_return_val_if_fail (mixer->mixer_handle == NULL, FALSE); g_return_val_if_fail (mixer->handle == NULL, FALSE);
/* open and initialize the mixer device */ /* open and initialize the mixer device */
err = snd_mixer_open (&mixer->mixer_handle, 0); err = snd_mixer_open (&mixer->handle, 0);
if (err < 0 || mixer->mixer_handle == NULL) { if (err < 0 || mixer->handle == NULL) {
GST_ERROR_OBJECT (GST_OBJECT (mixer), "Cannot open mixer device."); GST_WARNING ("Cannot open empty mixer.");
mixer->mixer_handle = NULL; mixer->handle = NULL;
return FALSE; return FALSE;
} }
#if 0
GstAlsa *alsa = GST_ALSA (mixer);
if (!strncmp (alsa->device, "hw:", 3)) /* hack hack hack hack hack!!!!! */
nocomma = g_strdup (alsa->device); if (strncmp (mixer->device, "default", 7) == 0) {
else if (!strncmp (alsa->device, "plughw:", 7)) /* hack! */
nocomma = g_strdup (alsa->device + 4); g_free (mixer->device);
else mixer->device = g_strdup ("hw:0");
goto error; } else if (strncmp (mixer->device, "hw:", 3) == 0) {
#else /* ok */
nocomma = g_strdup ("hw:0"); } else if (strncmp (mixer->device, "plughw:", 7) == 0) {
#endif gchar *freeme = mixer->device;
if (strchr (nocomma, ',')) mixer->device = g_strdup (freeme + 4);
strchr (nocomma, ',')[0] = '\0'; g_free (freeme);
} else {
if ((err = snd_mixer_attach (mixer->mixer_handle, nocomma)) < 0) {
GST_ERROR_OBJECT (GST_OBJECT (mixer),
"Cannot attach mixer to sound device `%s'.", nocomma);
goto error; goto error;
} }
if ((err = snd_mixer_selem_register (mixer->mixer_handle, NULL, NULL)) < 0) { if (strchr (mixer->device, ','))
GST_ERROR_OBJECT (GST_OBJECT (mixer), "Cannot register mixer elements."); strchr (mixer->device, ',')[0] = '\0';
if ((err = snd_mixer_attach (mixer->handle, mixer->device)) < 0) {
GST_WARNING ("Cannot open mixer for sound device `%s'.", mixer->device);
goto error; goto error;
} }
if ((err = snd_mixer_load (mixer->mixer_handle)) < 0) { if ((err = snd_mixer_selem_register (mixer->handle, NULL, NULL)) < 0) {
GST_ERROR_OBJECT (GST_OBJECT (mixer), "Cannot load mixer settings."); GST_WARNING ("Cannot register mixer elements.");
goto error;
}
if ((err = snd_mixer_load (mixer->handle)) < 0) {
GST_WARNING ("Cannot load mixer settings.");
goto error; goto error;
} }
/* I don't know how to get a device name from a mixer handle. So on /* I don't know how to get a device name from a mixer handle. So on
* to the ugly hacks here, then... */ * to the ugly hacks here, then... */
if (sscanf (nocomma, "hw:%d", &device) == 1) { if (sscanf (mixer->device, "hw:%d", &devicenum) == 1) {
gchar *name; gchar *name;
if (!snd_card_get_name (device, &name)) if (!snd_card_get_name (devicenum, &name))
mixer->cardname = name; mixer->cardname = name;
} }
g_free (nocomma); GST_INFO ("Successfully opened mixer for device `%s'.", mixer->device);
return TRUE; return TRUE;
error: error:
snd_mixer_close (mixer->mixer_handle); snd_mixer_close (mixer->handle);
mixer->mixer_handle = NULL; mixer->handle = NULL;
g_free (nocomma);
return FALSE; return FALSE;
} }
static void static void
gst_alsa_mixer_close (GstAlsaMixer * mixer) gst_alsa_mixer_ensure_track_list (GstAlsaMixer * mixer)
{
if (mixer->mixer_handle == NULL)
return;
if (mixer->cardname) {
free (mixer->cardname);
mixer->cardname = NULL;
}
snd_mixer_close (mixer->mixer_handle);
mixer->mixer_handle = NULL;
}
static void
gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
{ {
gint i, count; gint i, count;
snd_mixer_elem_t *element; snd_mixer_elem_t *element;
GstMixerTrack *track; GstMixerTrack *track;
GstMixerOptions *opts; GstMixerOptions *opts;
const GList *templates;
GstPadDirection dir = GST_PAD_UNKNOWN;
gboolean first = TRUE; gboolean first = TRUE;
g_return_if_fail (mixer->mixer_handle != NULL); g_return_if_fail (mixer->handle != NULL);
/* find direction */ if (mixer->tracklist)
templates = return;
gst_element_class_get_pad_template_list (GST_ELEMENT_GET_CLASS (mixer));
if (templates)
dir = GST_PAD_TEMPLATE (templates->data)->direction;
count = snd_mixer_get_count (mixer->mixer_handle); count = snd_mixer_get_count (mixer->handle);
element = snd_mixer_first_elem (mixer->mixer_handle); element = snd_mixer_first_elem (mixer->handle);
/* build track list */ /* build track list */
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
@ -222,11 +120,11 @@ gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
gboolean got_it = FALSE; gboolean got_it = FALSE;
if (snd_mixer_selem_has_capture_switch (element)) { if (snd_mixer_selem_has_capture_switch (element)) {
if (dir != GST_PAD_SRC && dir != GST_PAD_UNKNOWN) if (!(mixer->dir & GST_ALSA_MIXER_CAPTURE))
goto next; goto next;
flags = GST_MIXER_TRACK_INPUT; flags = GST_MIXER_TRACK_INPUT;
} else { } else {
if (dir != GST_PAD_SINK && dir != GST_PAD_UNKNOWN) if (!(mixer->dir & GST_ALSA_MIXER_PLAYBACK))
goto next; goto next;
} }
@ -291,92 +189,81 @@ gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
} }
} }
static void
gst_alsa_mixer_free_list (GstAlsaMixer * mixer)
{
g_return_if_fail (mixer->mixer_handle != NULL);
g_list_foreach (mixer->tracklist, (GFunc) g_object_unref, NULL); /* API */
g_list_free (mixer->tracklist);
mixer->tracklist = NULL; GstAlsaMixer *
gst_alsa_mixer_new (const char *device, GstAlsaMixerDirection dir)
{
GstAlsaMixer *ret = NULL;
g_return_val_if_fail (device != NULL, NULL);
ret = g_new0 (GstAlsaMixer, 1);
ret->device = g_strdup (device);
ret->dir = dir;
if (!gst_alsa_mixer_open (ret))
goto error;
return ret;
error:
if (ret)
gst_alsa_mixer_free (ret);
return NULL;
} }
static GstElementStateReturn void
gst_alsa_mixer_change_state (GstElement * element) gst_alsa_mixer_free (GstAlsaMixer * mixer)
{ {
GstAlsaMixer *this; g_return_if_fail (mixer != NULL);
g_return_val_if_fail (element != NULL, FALSE); if (mixer->device) {
this = GST_ALSA_MIXER (element); g_free (mixer->device);
mixer->device = NULL;
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (gst_alsa_mixer_open (this))
gst_alsa_mixer_build_list (this);
break;
case GST_STATE_READY_TO_NULL:
if (this->mixer_handle != NULL) {
gst_alsa_mixer_free_list (this);
gst_alsa_mixer_close (this);
}
break;
default:
break;
} }
if (GST_ELEMENT_CLASS (parent_class)->change_state) if (mixer->cardname) {
return GST_ELEMENT_CLASS (parent_class)->change_state (element); g_free (mixer->cardname);
mixer->cardname = NULL;
}
return GST_STATE_SUCCESS; if (mixer->tracklist) {
g_list_foreach (mixer->tracklist, (GFunc) g_object_unref, NULL);
g_list_free (mixer->tracklist);
mixer->tracklist = NULL;
}
if (mixer->handle) {
snd_mixer_close (mixer->handle);
mixer->handle = NULL;
}
g_free (mixer);
} }
/*** INTERFACE IMPLEMENTATION *************************************************/ const GList *
gst_alsa_mixer_list_tracks (GstAlsaMixer * mixer)
static void
gst_alsa_mixer_interface_init (GstMixerClass * klass)
{ {
GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE; g_return_val_if_fail (mixer->handle != NULL, NULL);
/* set up the interface hooks */ gst_alsa_mixer_ensure_track_list (mixer);
klass->list_tracks = gst_alsa_mixer_list_tracks;
klass->set_volume = gst_alsa_mixer_set_volume;
klass->get_volume = gst_alsa_mixer_get_volume;
klass->set_mute = gst_alsa_mixer_set_mute;
klass->set_record = gst_alsa_mixer_set_record;
klass->set_option = gst_alsa_mixer_set_option;
klass->get_option = gst_alsa_mixer_get_option;
}
gboolean return (const GList *) mixer->tracklist;
gst_alsa_mixer_supported (GstAlsaMixer * object, GType iface_type)
{
g_assert (iface_type == GST_TYPE_MIXER);
return (object->mixer_handle != NULL);
}
static const GList *
gst_alsa_mixer_list_tracks (GstMixer * mixer)
{
GstAlsaMixer *alsa_mixer = GST_ALSA_MIXER (mixer);
if (!alsa_mixer->mixer_handle)
return NULL;
return (const GList *) alsa_mixer->tracklist;
} }
static void static void
gst_alsa_mixer_update (GstAlsaMixer * alsa_mixer, gst_alsa_mixer_update (GstAlsaMixer * mixer, GstAlsaMixerTrack * alsa_track)
GstAlsaMixerTrack * alsa_track)
{ {
GstMixerTrack *track; GstMixerTrack *track = (GstMixerTrack *) alsa_track;
int v = 0; int v = 0;
snd_mixer_handle_events (alsa_mixer->mixer_handle); snd_mixer_handle_events (mixer->handle);
if (!alsa_track) if (!alsa_track)
return; return;
track = (GstMixerTrack *) alsa_track;
/* Any updates in flags? */ /* Any updates in flags? */
if (snd_mixer_selem_has_playback_switch (alsa_track->element)) { if (snd_mixer_selem_has_playback_switch (alsa_track->element)) {
@ -395,16 +282,16 @@ gst_alsa_mixer_update (GstAlsaMixer * alsa_mixer,
} }
} }
static void void
gst_alsa_mixer_get_volume (GstMixer * mixer, gst_alsa_mixer_get_volume (GstAlsaMixer * mixer, GstMixerTrack * track,
GstMixerTrack * track, gint * volumes) gint * volumes)
{ {
gint i; gint i;
GstAlsaMixerTrack *alsa_track = (GstAlsaMixerTrack *) track; GstAlsaMixerTrack *alsa_track = GST_ALSA_MIXER_TRACK (track);
g_return_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL); g_return_if_fail (mixer->handle != NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), alsa_track); gst_alsa_mixer_update (mixer, alsa_track);
if (track->flags & GST_MIXER_TRACK_MUTE && if (track->flags & GST_MIXER_TRACK_MUTE &&
!snd_mixer_selem_has_playback_switch (alsa_track->element)) { !snd_mixer_selem_has_playback_switch (alsa_track->element)) {
@ -426,16 +313,16 @@ gst_alsa_mixer_get_volume (GstMixer * mixer,
} }
} }
static void void
gst_alsa_mixer_set_volume (GstMixer * mixer, gst_alsa_mixer_set_volume (GstAlsaMixer * mixer, GstMixerTrack * track,
GstMixerTrack * track, gint * volumes) gint * volumes)
{ {
gint i; gint i;
GstAlsaMixerTrack *alsa_track = (GstAlsaMixerTrack *) track; GstAlsaMixerTrack *alsa_track = GST_ALSA_MIXER_TRACK (track);
g_return_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL); g_return_if_fail (mixer->handle != NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), alsa_track); gst_alsa_mixer_update (mixer, alsa_track);
/* only set the volume with ALSA lib if the track isn't muted. */ /* only set the volume with ALSA lib if the track isn't muted. */
for (i = 0; i < track->num_channels; i++) { for (i = 0; i < track->num_channels; i++) {
@ -454,15 +341,16 @@ gst_alsa_mixer_set_volume (GstMixer * mixer,
} }
} }
static void void
gst_alsa_mixer_set_mute (GstMixer * mixer, GstMixerTrack * track, gboolean mute) gst_alsa_mixer_set_mute (GstAlsaMixer * mixer, GstMixerTrack * track,
gboolean mute)
{ {
gint i; gint i;
GstAlsaMixerTrack *alsa_track = (GstAlsaMixerTrack *) track; GstAlsaMixerTrack *alsa_track = GST_ALSA_MIXER_TRACK (track);
g_return_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL); g_return_if_fail (mixer->handle != NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), alsa_track); gst_alsa_mixer_update (mixer, alsa_track);
if (mute) { if (mute) {
track->flags |= GST_MIXER_TRACK_MUTE; track->flags |= GST_MIXER_TRACK_MUTE;
@ -485,15 +373,15 @@ gst_alsa_mixer_set_mute (GstMixer * mixer, GstMixerTrack * track, gboolean mute)
} }
} }
static void void
gst_alsa_mixer_set_record (GstMixer * mixer, gst_alsa_mixer_set_record (GstAlsaMixer * mixer,
GstMixerTrack * track, gboolean record) GstMixerTrack * track, gboolean record)
{ {
GstAlsaMixerTrack *alsa_track = (GstAlsaMixerTrack *) track; GstAlsaMixerTrack *alsa_track = GST_ALSA_MIXER_TRACK (track);
g_return_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL); g_return_if_fail (mixer->handle != NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), alsa_track); gst_alsa_mixer_update (mixer, alsa_track);
if (record) { if (record) {
track->flags |= GST_MIXER_TRACK_RECORD; track->flags |= GST_MIXER_TRACK_RECORD;
@ -504,17 +392,17 @@ gst_alsa_mixer_set_record (GstMixer * mixer,
snd_mixer_selem_set_capture_switch_all (alsa_track->element, record ? 1 : 0); snd_mixer_selem_set_capture_switch_all (alsa_track->element, record ? 1 : 0);
} }
static void void
gst_alsa_mixer_set_option (GstMixer * mixer, gst_alsa_mixer_set_option (GstAlsaMixer * mixer,
GstMixerOptions * opts, gchar * value) GstMixerOptions * opts, gchar * value)
{ {
gint idx = -1, n = 0; gint idx = -1, n = 0;
GList *item; GList *item;
GstAlsaMixerOptions *alsa_opts = (GstAlsaMixerOptions *) opts; GstAlsaMixerOptions *alsa_opts = GST_ALSA_MIXER_OPTIONS (opts);
g_return_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL); g_return_if_fail (mixer->handle != NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), NULL); gst_alsa_mixer_update (mixer, NULL);
for (item = opts->values; item != NULL; item = item->next, n++) { for (item = opts->values; item != NULL; item = item->next, n++) {
if (!strcmp (item->data, value)) { if (!strcmp (item->data, value)) {
@ -528,16 +416,16 @@ gst_alsa_mixer_set_option (GstMixer * mixer,
snd_mixer_selem_set_enum_item (alsa_opts->element, 0, idx); snd_mixer_selem_set_enum_item (alsa_opts->element, 0, idx);
} }
static const gchar * const gchar *
gst_alsa_mixer_get_option (GstMixer * mixer, GstMixerOptions * opts) gst_alsa_mixer_get_option (GstAlsaMixer * mixer, GstMixerOptions * opts)
{ {
GstAlsaMixerOptions *alsa_opts = (GstAlsaMixerOptions *) opts;
gint ret; gint ret;
guint idx; guint idx;
GstAlsaMixerOptions *alsa_opts = GST_ALSA_MIXER_OPTIONS (opts);
g_return_val_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL, NULL); g_return_val_if_fail (mixer->handle != NULL, NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), NULL); gst_alsa_mixer_update (mixer, NULL);
ret = snd_mixer_selem_get_enum_item (alsa_opts->element, 0, &idx); ret = snd_mixer_selem_get_enum_item (alsa_opts->element, 0, &idx);
if (ret == 0) if (ret == 0)

155
ext/alsa/gstalsamixer.h
View file

@ -22,8 +22,8 @@
#include "gstalsa.h" #include "gstalsa.h"
#include <gst/interfaces/mixer.h>
#include <gst/interfaces/mixer.h>
#include "gstalsamixeroptions.h" #include "gstalsamixeroptions.h"
#include "gstalsamixertrack.h" #include "gstalsamixertrack.h"
@ -31,33 +31,160 @@
G_BEGIN_DECLS G_BEGIN_DECLS
#define GST_ALSA_MIXER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER,GstAlsaMixer)) #define GST_ALSA_MIXER(obj) ((GstAlsaMixer*)(obj))
#define GST_ALSA_MIXER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_MIXER,GstAlsaMixerClass))
#define GST_IS_ALSA_MIXER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_MIXER))
#define GST_IS_ALSA_MIXER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_MIXER))
#define GST_TYPE_ALSA_MIXER (gst_alsa_mixer_get_type())
typedef enum {
GST_ALSA_MIXER_CAPTURE = 1<<0,
GST_ALSA_MIXER_PLAYBACK = 1<<1,
GST_ALSA_MIXER_ALL = GST_ALSA_MIXER_CAPTURE | GST_ALSA_MIXER_PLAYBACK
} GstAlsaMixerDirection;
typedef struct _GstAlsaMixer GstAlsaMixer; typedef struct _GstAlsaMixer GstAlsaMixer;
typedef struct _GstAlsaMixerClass GstAlsaMixerClass;
struct _GstAlsaMixer { struct _GstAlsaMixer {
GstElement parent;
GList * tracklist; /* list of available tracks */ GList * tracklist; /* list of available tracks */
snd_mixer_t * mixer_handle; snd_mixer_t * handle;
gchar * device;
gchar * cardname; gchar * cardname;
};
struct _GstAlsaMixerClass { GstAlsaMixerDirection dir;
GstElementClass parent;
}; };
GType gst_alsa_mixer_get_type (void); GstAlsaMixer* gst_alsa_mixer_new (const gchar *device,
GstAlsaMixerDirection dir);
void gst_alsa_mixer_free (GstAlsaMixer *mixer);
const GList* gst_alsa_mixer_list_tracks (GstAlsaMixer * mixer);
void gst_alsa_mixer_set_volume (GstAlsaMixer * mixer,
GstMixerTrack * track,
gint * volumes);
void gst_alsa_mixer_get_volume (GstAlsaMixer * mixer,
GstMixerTrack * track,
gint * volumes);
void gst_alsa_mixer_set_record (GstAlsaMixer * mixer,
GstMixerTrack * track,
gboolean record);
void gst_alsa_mixer_set_mute (GstAlsaMixer * mixer,
GstMixerTrack * track,
gboolean mute);
void gst_alsa_mixer_set_option (GstAlsaMixer * mixer,
GstMixerOptions * opts,
gchar * value);
const gchar* gst_alsa_mixer_get_option (GstAlsaMixer * mixer,
GstMixerOptions * opts);
#define GST_IMPLEMENT_ALSA_MIXER_METHODS(Type, interface_as_function) \
static gboolean \
interface_as_function ## _supported (Type *this, GType iface_type) \
{ \
g_assert (iface_type == GST_TYPE_MIXER); \
\
return (this->mixer != NULL); \
} \
\
static const GList* \
interface_as_function ## _list_tracks (GstMixer * mixer) \
{ \
Type *this = (Type*) mixer; \
\
g_return_val_if_fail (this != NULL, NULL); \
g_return_val_if_fail (this->mixer != NULL, NULL); \
\
return gst_alsa_mixer_list_tracks (this->mixer); \
} \
\
static void \
interface_as_function ## _set_volume (GstMixer * mixer, GstMixerTrack * track, \
gint * volumes) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_alsa_mixer_set_volume (this->mixer, track, volumes); \
} \
\
static void \
interface_as_function ## _get_volume (GstMixer * mixer, GstMixerTrack * track, \
gint * volumes) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_alsa_mixer_get_volume (this->mixer, track, volumes); \
} \
\
static void \
interface_as_function ## _set_record (GstMixer * mixer, GstMixerTrack * track, \
gboolean record) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_alsa_mixer_set_record (this->mixer, track, record); \
} \
\
static void \
interface_as_function ## _set_mute (GstMixer * mixer, GstMixerTrack * track, \
gboolean mute) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_alsa_mixer_set_mute (this->mixer, track, mute); \
} \
\
static void \
interface_as_function ## _set_option (GstMixer * mixer, GstMixerOptions * opts, \
gchar * value) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_alsa_mixer_set_option (this->mixer, opts, value); \
} \
\
static const gchar* \
interface_as_function ## _get_option (GstMixer * mixer, GstMixerOptions * opts) \
{ \
Type *this = (Type*) mixer; \
\
g_return_val_if_fail (this != NULL, NULL); \
g_return_val_if_fail (this->mixer != NULL, NULL); \
\
return gst_alsa_mixer_get_option (this->mixer, opts); \
} \
\
static void \
interface_as_function ## _interface_init (GstMixerClass * klass) \
{ \
GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE; \
\
/* set up the interface hooks */ \
klass->list_tracks = interface_as_function ## _list_tracks; \
klass->set_volume = interface_as_function ## _set_volume; \
klass->get_volume = interface_as_function ## _get_volume; \
klass->set_mute = interface_as_function ## _set_mute; \
klass->set_record = interface_as_function ## _set_record; \
klass->set_option = interface_as_function ## _set_option; \
klass->get_option = interface_as_function ## _get_option; \
}
G_END_DECLS G_END_DECLS

92
ext/alsa/gstalsamixerelement.c Normal file
View file

@ -0,0 +1,92 @@
/* ALSA mixer implementation.
* Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstalsamixerelement.h"
static GstElementDetails gst_alsa_mixer_element_details =
GST_ELEMENT_DETAILS ("Alsa Mixer",
"Generic/Audio",
"Control sound input and output levels with ALSA",
"Leif Johnson <leif@ambient.2y.net>");
GST_BOILERPLATE_WITH_INTERFACE (GstAlsaMixerElement, gst_alsa_mixer_element,
GstElement, GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER,
gst_alsa_mixer_element);
GST_IMPLEMENT_ALSA_MIXER_METHODS (GstAlsaMixerElement, gst_alsa_mixer_element);
static GstElementStateReturn gst_alsa_mixer_element_change_state (GstElement *
element);
static void
gst_alsa_mixer_element_base_init (gpointer klass)
{
gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
&gst_alsa_mixer_element_details);
}
static void
gst_alsa_mixer_element_class_init (GstAlsaMixerElementClass * klass)
{
GstElementClass *element_class;
element_class = (GstElementClass *) klass;
element_class->change_state = gst_alsa_mixer_element_change_state;
}
static void
gst_alsa_mixer_element_init (GstAlsaMixerElement * this)
{
this->mixer = NULL;
}
static GstElementStateReturn
gst_alsa_mixer_element_change_state (GstElement * element)
{
GstAlsaMixerElement *this = GST_ALSA_MIXER_ELEMENT (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!this->mixer) {
this->mixer = gst_alsa_mixer_new ("hw:0", GST_ALSA_MIXER_ALL);
}
break;
case GST_STATE_READY_TO_NULL:
if (this->mixer) {
gst_alsa_mixer_free (this->mixer);
this->mixer = NULL;
}
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}

59
ext/alsa/gstalsamixerelement.h Normal file
View file

@ -0,0 +1,59 @@
/* ALSA mixer interface implementation.
* Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GST_ALSA_MIXER_ELEMENT_H__
#define __GST_ALSA_MIXER_ELEMENT_H__
#include "gstalsa.h"
#include "gstalsamixer.h"
G_BEGIN_DECLS
#define GST_ALSA_MIXER_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER_ELEMENT,GstAlsaMixerElement))
#define GST_ALSA_MIXER_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_MIXER_ELEMENT,GstAlsaMixerElementClass))
#define GST_IS_ALSA_MIXER_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_MIXER_ELEMENT))
#define GST_IS_ALSA_MIXER_ELEMENT_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_MIXER_ELEMENT))
#define GST_TYPE_ALSA_MIXER_ELEMENT (gst_alsa_mixer_element_get_type())
typedef struct _GstAlsaMixerElement GstAlsaMixerElement;
typedef struct _GstAlsaMixerElementClass GstAlsaMixerElementClass;
struct _GstAlsaMixerElement {
GstElement parent;
GstAlsaMixer *mixer;
};
struct _GstAlsaMixerElementClass {
GstElementClass parent;
};
GType gst_alsa_mixer_element_get_type (void);
G_END_DECLS
#endif /* __GST_ALSA_MIXER_ELEMENT_H__ */

4
ext/alsa/gstalsaplugin.c
View file

@ -25,7 +25,7 @@
#include "gstalsasink.h" #include "gstalsasink.h"
#include "gstalsasrc.h" #include "gstalsasrc.h"
#include "gstalsamixer.h" #include "gstalsamixerelement.h"
GST_DEBUG_CATEGORY (alsa_debug); GST_DEBUG_CATEGORY (alsa_debug);
@ -57,7 +57,7 @@ plugin_init (GstPlugin * plugin)
int err; int err;
if (!gst_element_register (plugin, "alsamixer", GST_RANK_NONE, if (!gst_element_register (plugin, "alsamixer", GST_RANK_NONE,
GST_TYPE_ALSA_MIXER)) GST_TYPE_ALSA_MIXER_ELEMENT))
return FALSE; return FALSE;
if (!gst_element_register (plugin, "alsasrc", GST_RANK_PRIMARY, if (!gst_element_register (plugin, "alsasrc", GST_RANK_PRIMARY,
GST_TYPE_ALSA_SRC)) GST_TYPE_ALSA_SRC))

127
ext/alsa/gstalsasrc.c
View file

@ -46,9 +46,11 @@ enum
PROP_DEVICE, PROP_DEVICE,
}; };
static void gst_alsasrc_base_init (gpointer g_class); GST_BOILERPLATE_WITH_INTERFACE (GstAlsaSrc, gst_alsasrc, GstAudioSrc,
static void gst_alsasrc_class_init (GstAlsaSrcClass * klass); GST_TYPE_AUDIO_SRC, GstMixer, GST_TYPE_MIXER, gst_alsasrc_mixer);
static void gst_alsasrc_init (GstAlsaSrc * alsasrc);
GST_IMPLEMENT_ALSA_MIXER_METHODS (GstAlsaSrc, gst_alsasrc_mixer);
static void gst_alsasrc_dispose (GObject * object); static void gst_alsasrc_dispose (GObject * object);
static void gst_alsasrc_set_property (GObject * object, static void gst_alsasrc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec); guint prop_id, const GValue * value, GParamSpec * pspec);
@ -57,7 +59,10 @@ static void gst_alsasrc_get_property (GObject * object,
static GstCaps *gst_alsasrc_getcaps (GstBaseSrc * bsrc); static GstCaps *gst_alsasrc_getcaps (GstBaseSrc * bsrc);
static gboolean gst_alsasrc_open (GstAudioSrc * asrc, GstRingBufferSpec * spec); static gboolean gst_alsasrc_open (GstAudioSrc * asrc);
static gboolean gst_alsasrc_prepare (GstAudioSrc * asrc,
GstRingBufferSpec * spec);
static gboolean gst_alsasrc_unprepare (GstAudioSrc * asrc);
static gboolean gst_alsasrc_close (GstAudioSrc * asrc); static gboolean gst_alsasrc_close (GstAudioSrc * asrc);
static guint gst_alsasrc_read (GstAudioSrc * asrc, gpointer data, guint length); static guint gst_alsasrc_read (GstAudioSrc * asrc, gpointer data, guint length);
static guint gst_alsasrc_delay (GstAudioSrc * asrc); static guint gst_alsasrc_delay (GstAudioSrc * asrc);
@ -86,36 +91,6 @@ static GstStaticPadTemplate alsasrc_src_factory =
"rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]") "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]")
); );
static GstElementClass *parent_class = NULL;
/* static guint gst_alsasrc_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_alsasrc_get_type (void)
{
static GType alsasrc_type = 0;
if (!alsasrc_type) {
static const GTypeInfo alsasrc_info = {
sizeof (GstAlsaSrcClass),
gst_alsasrc_base_init,
NULL,
(GClassInitFunc) gst_alsasrc_class_init,
NULL,
NULL,
sizeof (GstAlsaSrc),
0,
(GInstanceInitFunc) gst_alsasrc_init,
};
alsasrc_type =
g_type_register_static (GST_TYPE_AUDIO_SRC, "GstAlsaSrc",
&alsasrc_info, 0);
}
return alsasrc_type;
}
static void static void
gst_alsasrc_dispose (GObject * object) gst_alsasrc_dispose (GObject * object)
{ {
@ -147,8 +122,6 @@ gst_alsasrc_class_init (GstAlsaSrcClass * klass)
gstbaseaudiosrc_class = (GstBaseAudioSrcClass *) klass; gstbaseaudiosrc_class = (GstBaseAudioSrcClass *) klass;
gstaudiosrc_class = (GstAudioSrcClass *) klass; gstaudiosrc_class = (GstAudioSrcClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_BASE_AUDIO_SRC);
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_alsasrc_dispose); gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_alsasrc_dispose);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_alsasrc_get_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_alsasrc_get_property);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_alsasrc_set_property); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_alsasrc_set_property);
@ -156,6 +129,8 @@ gst_alsasrc_class_init (GstAlsaSrcClass * klass)
gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_alsasrc_getcaps); gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_alsasrc_getcaps);
gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_alsasrc_open); gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_alsasrc_open);
gstaudiosrc_class->prepare = GST_DEBUG_FUNCPTR (gst_alsasrc_prepare);
gstaudiosrc_class->unprepare = GST_DEBUG_FUNCPTR (gst_alsasrc_unprepare);
gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_alsasrc_close); gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_alsasrc_close);
gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_alsasrc_read); gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_alsasrc_read);
gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_alsasrc_delay); gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_alsasrc_delay);
@ -475,7 +450,32 @@ error:
} }
static gboolean static gboolean
gst_alsasrc_open (GstAudioSrc * asrc, GstRingBufferSpec * spec) gst_alsasrc_open (GstAudioSrc * asrc)
{
GstAlsaSrc *alsa;
gint err;
alsa = GST_ALSA_SRC (asrc);
CHECK (snd_pcm_open (&alsa->handle, alsa->device, SND_PCM_STREAM_CAPTURE,
SND_PCM_NONBLOCK), open_error);
if (!alsa->mixer)
alsa->mixer = gst_alsa_mixer_new (alsa->device, GST_ALSA_MIXER_CAPTURE);
return TRUE;
/* ERRORS */
open_error:
{
GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ,
("Capture open error: %s", snd_strerror (err)), (NULL));
return FALSE;
}
}
static gboolean
gst_alsasrc_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
{ {
GstAlsaSrc *alsa; GstAlsaSrc *alsa;
gint err; gint err;
@ -485,9 +485,6 @@ gst_alsasrc_open (GstAudioSrc * asrc, GstRingBufferSpec * spec)
if (!alsasrc_parse_spec (alsa, spec)) if (!alsasrc_parse_spec (alsa, spec))
goto spec_parse; goto spec_parse;
CHECK (snd_pcm_open (&alsa->handle, alsa->device, SND_PCM_STREAM_CAPTURE,
SND_PCM_NONBLOCK), open_error);
CHECK (snd_pcm_nonblock (alsa->handle, 0), non_block); CHECK (snd_pcm_nonblock (alsa->handle, 0), non_block);
CHECK (set_hwparams (alsa), hw_params_failed); CHECK (set_hwparams (alsa), hw_params_failed);
@ -511,12 +508,6 @@ spec_parse:
("Error parsing spec"), (NULL)); ("Error parsing spec"), (NULL));
return FALSE; return FALSE;
} }
open_error:
{
GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ,
("Recording open error: %s", snd_strerror (err)), (NULL));
return FALSE;
}
non_block: non_block:
{ {
GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ, GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ,
@ -544,18 +535,58 @@ prepare_failed:
} }
static gboolean static gboolean
gst_alsasrc_close (GstAudioSrc * asrc) gst_alsasrc_unprepare (GstAudioSrc * asrc)
{ {
GstAlsaSrc *alsa; GstAlsaSrc *alsa;
gint err;
alsa = GST_ALSA_SRC (asrc); alsa = GST_ALSA_SRC (asrc);
CHECK (snd_pcm_drop (alsa->handle), drop);
CHECK (snd_pcm_hw_free (alsa->handle), hw_free);
CHECK (snd_pcm_nonblock (alsa->handle, 1), non_block);
return TRUE;
/* ERRORS */
drop:
{
GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ,
("Could not drop samples: %s", snd_strerror (err)), (NULL));
return FALSE;
}
hw_free:
{
GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ,
("Could not free hw params: %s", snd_strerror (err)), (NULL));
return FALSE;
}
non_block:
{
GST_ELEMENT_ERROR (alsa, RESOURCE, OPEN_READ,
("Could not set device to nonblocking: %s", snd_strerror (err)),
(NULL));
return FALSE;
}
}
static gboolean
gst_alsasrc_close (GstAudioSrc * asrc)
{
GstAlsaSrc *alsa = GST_ALSA_SRC (asrc);
snd_pcm_close (alsa->handle); snd_pcm_close (alsa->handle);
if (alsa->mixer) {
gst_alsa_mixer_free (alsa->mixer);
alsa->mixer = NULL;
}
return TRUE; return TRUE;
} }
/* /*
* Underrun and suspend recovery * Underrun and suspend recovery
*/ */

27
ext/alsa/gstalsasrc.h
View file

@ -24,9 +24,10 @@
#define __GST_ALSASRC_H__ #define __GST_ALSASRC_H__
#include <gst/gst.h>
#include <gst/audio/gstaudiosrc.h> #include <gst/audio/gstaudiosrc.h>
#include <alsa/asoundlib.h> #include "gstalsa.h"
#include "gstalsamixer.h"
G_BEGIN_DECLS G_BEGIN_DECLS
@ -40,7 +41,7 @@ typedef struct _GstAlsaSrc GstAlsaSrc;
typedef struct _GstAlsaSrcClass GstAlsaSrcClass; typedef struct _GstAlsaSrcClass GstAlsaSrcClass;
struct _GstAlsaSrc { struct _GstAlsaSrc {
GstAudioSrc src; GstAudioSrc src;
gchar *device; gchar *device;
@ -48,16 +49,18 @@ struct _GstAlsaSrc {
snd_pcm_hw_params_t *hwparams; snd_pcm_hw_params_t *hwparams;
snd_pcm_sw_params_t *swparams; snd_pcm_sw_params_t *swparams;
snd_pcm_access_t access; snd_pcm_access_t access;
snd_pcm_format_t format; snd_pcm_format_t format;
guint rate; guint rate;
guint channels; guint channels;
gint bytes_per_sample; gint bytes_per_sample;
guint buffer_time; guint buffer_time;
guint period_time; guint period_time;
snd_pcm_uframes_t buffer_size; snd_pcm_uframes_t buffer_size;
snd_pcm_uframes_t period_size; snd_pcm_uframes_t period_size;
GstAlsaMixer *mixer;
}; };
struct _GstAlsaSrcClass { struct _GstAlsaSrcClass {

62
gst-libs/gst/audio/gstaudiosrc.c
View file

@ -70,6 +70,8 @@ static void gst_audioringbuffer_finalize (GObject * object);
static GstRingBufferClass *ring_parent_class = NULL; static GstRingBufferClass *ring_parent_class = NULL;
static gboolean gst_audioringbuffer_open_device (GstRingBuffer * buf);
static gboolean gst_audioringbuffer_close_device (GstRingBuffer * buf);
static gboolean gst_audioringbuffer_acquire (GstRingBuffer * buf, static gboolean gst_audioringbuffer_acquire (GstRingBuffer * buf,
GstRingBufferSpec * spec); GstRingBufferSpec * spec);
static gboolean gst_audioringbuffer_release (GstRingBuffer * buf); static gboolean gst_audioringbuffer_release (GstRingBuffer * buf);
@ -120,6 +122,10 @@ gst_audioringbuffer_class_init (GstAudioRingBufferClass * klass)
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_audioringbuffer_dispose); gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_audioringbuffer_dispose);
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_audioringbuffer_finalize); gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_audioringbuffer_finalize);
gstringbuffer_class->open_device =
GST_DEBUG_FUNCPTR (gst_audioringbuffer_open_device);
gstringbuffer_class->close_device =
GST_DEBUG_FUNCPTR (gst_audioringbuffer_close_device);
gstringbuffer_class->acquire = gstringbuffer_class->acquire =
GST_DEBUG_FUNCPTR (gst_audioringbuffer_acquire); GST_DEBUG_FUNCPTR (gst_audioringbuffer_acquire);
gstringbuffer_class->release = gstringbuffer_class->release =
@ -232,6 +238,54 @@ gst_audioringbuffer_finalize (GObject * object)
G_OBJECT_CLASS (ring_parent_class)->finalize (object); G_OBJECT_CLASS (ring_parent_class)->finalize (object);
} }
static gboolean
gst_audioringbuffer_open_device (GstRingBuffer * buf)
{
GstAudioSrc *src;
GstAudioSrcClass *csrc;
gboolean result = TRUE;
src = GST_AUDIO_SRC (GST_OBJECT_PARENT (buf));
csrc = GST_AUDIO_SRC_GET_CLASS (src);
if (csrc->open)
result = csrc->open (src);
if (!result)
goto could_not_open;
return result;
could_not_open:
{
return FALSE;
}
}
static gboolean
gst_audioringbuffer_close_device (GstRingBuffer * buf)
{
GstAudioSrc *src;
GstAudioSrcClass *csrc;
gboolean result = TRUE;
src = GST_AUDIO_SRC (GST_OBJECT_PARENT (buf));
csrc = GST_AUDIO_SRC_GET_CLASS (src);
if (csrc->close)
result = csrc->close (src);
if (!result)
goto could_not_open;
return result;
could_not_open:
{
return FALSE;
}
}
static gboolean static gboolean
gst_audioringbuffer_acquire (GstRingBuffer * buf, GstRingBufferSpec * spec) gst_audioringbuffer_acquire (GstRingBuffer * buf, GstRingBufferSpec * spec)
{ {
@ -243,8 +297,8 @@ gst_audioringbuffer_acquire (GstRingBuffer * buf, GstRingBufferSpec * spec)
src = GST_AUDIO_SRC (GST_OBJECT_PARENT (buf)); src = GST_AUDIO_SRC (GST_OBJECT_PARENT (buf));
csrc = GST_AUDIO_SRC_GET_CLASS (src); csrc = GST_AUDIO_SRC_GET_CLASS (src);
if (csrc->open) if (csrc->prepare)
result = csrc->open (src, spec); result = csrc->prepare (src, spec);
if (!result) if (!result)
goto could_not_open; goto could_not_open;
@ -297,8 +351,8 @@ gst_audioringbuffer_release (GstRingBuffer * buf)
gst_buffer_unref (buf->data); gst_buffer_unref (buf->data);
buf->data = NULL; buf->data = NULL;
if (csrc->close) if (csrc->unprepare)
result = csrc->close (src); result = csrc->unprepare (src);
return result; return result;
} }

14
gst-libs/gst/audio/gstaudiosrc.h
View file

@ -69,15 +69,19 @@ struct _GstAudioSrcClass {
/* vtable */ /* vtable */
/* open the device with given specs */ /* open the device with given specs */
gboolean (*open) (GstAudioSrc *src, GstRingBufferSpec *spec); gboolean (*open) (GstAudioSrc *src);
/* prepare resources and state to operate with the given specs */
gboolean (*prepare) (GstAudioSrc *src, GstRingBufferSpec *spec);
/* undo anything that was done in prepare() */
gboolean (*unprepare) (GstAudioSrc *src);
/* close the device */ /* close the device */
gboolean (*close) (GstAudioSrc *src); gboolean (*close) (GstAudioSrc *src);
/* read samples from the device */ /* read samples from the device */
guint (*read) (GstAudioSrc *src, gpointer data, guint length); guint (*read) (GstAudioSrc *src, gpointer data, guint length);
/* get number of samples queued in the device */ /* get number of samples queued in the device */
guint (*delay) (GstAudioSrc *src); guint (*delay) (GstAudioSrc *src);
/* reset the audio device, unblock from a write */ /* reset the audio device, unblock from a write */
void (*reset) (GstAudioSrc *src); void (*reset) (GstAudioSrc *src);
/*< private >*/ /*< private >*/
gpointer _gst_reserved[GST_PADDING]; gpointer _gst_reserved[GST_PADDING];