mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-16 05:16:36 +00:00
Code Issues 1 Projects Releases Wiki Activity

ext/alsa/: Port to 0.9.

Browse source 
Original commit message from CVS:
2005-08-19  Andy Wingo  <wingo@pobox.com>

* ext/alsa/gstalsamixertrack.h:
* ext/alsa/gstalsamixertrack.c:
* ext/alsa/gstalsamixeroptions.h:
* ext/alsa/gstalsamixeroptions.c:
* ext/alsa/gstalsamixer.h:
* ext/alsa/gstalsamixer.c: Port to 0.9.

* ext/alsa/Makefile.am: Build mixer, mixeroptions, mixertracks.
Remove gstalsa.c and alsaclock. No more cruft here.
This commit is contained in:
Andy Wingo 2005-08-19 16:13:54 +00:00
parent 256c7c115e
commit b05796c9d9
11 changed files with 143 additions and 2738 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
ChangeLog
View file

@ -1,3 +1,15 @@
2005-08-19 Andy Wingo <wingo@pobox.com>
* ext/alsa/gstalsamixertrack.h:
* ext/alsa/gstalsamixertrack.c:
* ext/alsa/gstalsamixeroptions.h:
* ext/alsa/gstalsamixeroptions.c:
* ext/alsa/gstalsamixer.h:
* ext/alsa/gstalsamixer.c: Port to 0.9.
* ext/alsa/Makefile.am: Build mixer, mixeroptions, mixertracks.
Remove gstalsa.c and alsaclock. No more cruft here.
2005-08-18 Wim Taymans <wim@fluendo.com>
* gst-libs/gst/rtp/gstbasertpdepayload.c:

12
ext/alsa/Makefile.am
View file

@ -2,16 +2,11 @@ plugin_LTLIBRARIES = libgstalsa.la
libgstalsa_la_SOURCES = \
gstalsaplugin.c \
gstalsasink.c \
gstalsasrc.c
# port alsa stuff then add the _SOURCES above
EXTRA_DIST = \
gstalsamixer.c \
gstalsamixer.c \
gstalsamixertrack.c \
gstalsamixeroptions.c \
gstalsa.c \
gstalsaclock.c
gstalsasink.c \
gstalsasrc.c
libgstalsa_la_CFLAGS = $(GST_CFLAGS) $(ALSA_CFLAGS)
libgstalsa_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
@ -22,7 +17,6 @@ libgstalsa_la_LIBADD = \
noinst_HEADERS = \
gstalsa.h \
gstalsaclock.h \
gstalsasink.h \
gstalsasrc.h \
gstalsamixer.h \

2125
ext/alsa/gstalsa.c
View file

File diff suppressed because it is too large Load diff

208
ext/alsa/gstalsa.h
View file

@ -19,9 +19,11 @@
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GST_ALSA_H__
#define __GST_ALSA_H__
#define ALSA_PCM_NEW_HW_PARAMS_API
#define ALSA_PCM_NEW_SW_PARAMS_API
@ -31,210 +33,4 @@
#include <gst/gst.h>
GST_DEBUG_CATEGORY_EXTERN (alsa_debug);
#define GST_CAT_DEFAULT alsa_debug
/* error checking for standard alsa functions */
/* NOTE: these functions require a GObject *this and can only be used in
functions that return TRUE on success and FALSE on error */
#define SIMPLE_ERROR_CHECK(value) G_STMT_START{ \
int err = (value); \
if (err < 0) { \
GST_WARNING_OBJECT (this, "\"" #value "\": %s", snd_strerror (err)); \
return FALSE; \
} \
}G_STMT_END
#ifdef G_HAVE_ISO_VARARGS
#define ERROR_CHECK(value, ...) G_STMT_START{ \
int err = (value); \
if (err < 0) { \
GST_WARNING_OBJECT (this, __VA_ARGS__, snd_strerror (err)); \
return FALSE; \
} \
}G_STMT_END
#elif defined(G_HAVE_GNUC_VARARGS)
#define ERROR_CHECK(value, args...) G_STMT_START{ \
int err = (value); \
if (err < 0) { \
GST_WARNING_OBJECT (this, ## args, snd_strerror (err)); \
return FALSE; \
} \
}G_STMT_END
#else
#define ERROR_CHECK(value, args...) G_STMT_START{ \
int err = (value); \
if (err < 0) { \
GST_WARNING_OBJECT (this, snd_strerror (err)); \
return FALSE; \
} \
}G_STMT_END
#endif
#define GST_ALSA_MIN_RATE 8000
#define GST_ALSA_MAX_RATE 192000
#define GST_ALSA_MIN_PERIOD_CNT 2
#define GST_ALSA_MAX_PERIOD_CNT 64
#define GST_ALSA_MIN_PERIOD_SZ 2
#define GST_ALSA_MAX_PERIOD_SZ 8192
#define GST_ALSA_MIN_BUFFER_SZ GST_ALSA_MIN_PERIOD_CNT*GST_ALSA_MIN_PERIOD_SZ
#define GST_ALSA_MAX_BUFFER_SZ 65536
#define GST_ALSA_MAX_TRACKS 64 /* we don't support more than 64 tracks */
#define GST_ALSA_MAX_CHANNELS 32 /* tracks can have up to 32 channels */
/* a few alsa functions return an int value and a 'direction', -1, 0 or +1
0 = exact value
-1 = real value is up to 1 before given value
+1 = real value is up to 1 after given value
*/
#define GST_ALSA_DIR_MIN(i) ((i == 1) ? 1 : 0)
#define GST_ALSA_DIR_MAX(i) ((i ==-1) ?-1 : 0)
/* Mono is 1 channel ; the 5.1 standard is 6 channels. The value for
GST_ALSA_MAX_CHANNELS comes from alsa/mixer.h. */
/* Max allowed discontinuity in time units between timestamp and playback
pointer before killing/inserting samples. This should be big enough to allow
smoothing errors on different video formats. */
#define GST_ALSA_DEFAULT_DISCONT (GST_SECOND / 10)
G_BEGIN_DECLS
#define GST_ALSA(obj) (G_TYPE_CHECK_INSTANCE_CAST(obj, GST_TYPE_ALSA, GstAlsa))
#define GST_ALSA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST(klass, GST_TYPE_ALSA, GstAlsaClass))
#define GST_ALSA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_ALSA, GstAlsaClass))
#define GST_IS_ALSA(obj) (G_TYPE_CHECK_INSTANCE_TYPE(obj, GST_TYPE_ALSA))
#define GST_IS_ALSA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE(klass, GST_TYPE_ALSA))
#define GST_TYPE_ALSA (gst_alsa_get_type())
enum {
GST_ALSA_OPEN = GST_ELEMENT_FLAG_LAST,
GST_ALSA_RUNNING,
GST_ALSA_CAPS_NEGO,
GST_ALSA_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 3
};
typedef enum {
GST_ALSA_CAPS_PAUSE = 0,
GST_ALSA_CAPS_RESUME,
GST_ALSA_CAPS_SYNC_START
/* add more */
} GstAlsaPcmCaps;
#define GST_ALSA_CAPS_IS_SET(obj, flag) (GST_ALSA (obj)->pcm_caps & (1<<(flag)))
#define GST_ALSA_CAPS_SET(obj, flag, set) G_STMT_START{ \
if (set) { (GST_ALSA (obj)->pcm_caps |= (1<<(flag))); } \
else { (GST_ALSA (obj)->pcm_caps &= ~(1<<(flag))); } \
}G_STMT_END
typedef struct _GstAlsaClock GstAlsaClock;
typedef struct _GstAlsaClockClass GstAlsaClockClass;
typedef struct _GstAlsa GstAlsa;
typedef struct _GstAlsaClass GstAlsaClass;
typedef int (*GstAlsaTransmitFunction) (GstAlsa *this, snd_pcm_sframes_t *avail);
typedef struct {
snd_pcm_format_t format;
guint rate;
gint channels;
} GstAlsaFormat;
struct _GstAlsa {
GstElement parent;
/* array of GstAlsaPads */
GstPad * pad[GST_ALSA_MAX_TRACKS];
gchar * device;
gchar * cardname;
snd_pcm_t * handle;
guint pcm_caps; /* capabilities of the pcm device, see GstAlsaPcmCaps */
snd_output_t * out;
GstAlsaFormat * format; /* NULL if undefined */
gboolean mmap; /* use mmap transmit (fast) or read/write (sloooow) */
GstAlsaTransmitFunction transmit;
GstCaps * cached_caps; /* we cache caps to speed up get_caps */
/* latency / performance parameters */
snd_pcm_uframes_t period_size;
unsigned int period_count;
gboolean autorecover;
/* clocking */
GstAlsaClock * clock; /* our provided clock */
GstClock * ext_clock; /* externally set clock. */
snd_pcm_uframes_t played; /* samples transmitted since last sync
This thing actually is our master clock.
We will event insert silent samples or
drop some to sync to incoming timestamps.
*/
snd_pcm_uframes_t captured;
GstClockTime max_discont; /* max difference between current
playback timestamp and buffers timestamps
*/
};
struct _GstAlsaClass {
GstElementClass parent_class;
snd_pcm_stream_t stream;
/* different transmit functions */
GstAlsaTransmitFunction transmit_mmap;
GstAlsaTransmitFunction transmit_rw;
/* autodetected devices available */
GList *devices;
};
GType gst_alsa_get_type (void);
void gst_alsa_set_eos (GstAlsa * this);
GstPadLinkReturn gst_alsa_link (GstPad * pad,
const GstCaps * caps);
GstCaps * gst_alsa_get_caps (GstPad * pad);
GstCaps * gst_alsa_fixate (GstPad * pad,
const GstCaps * caps);
GstCaps * gst_alsa_caps (snd_pcm_format_t format,
gint rate,
gint channels);
/* audio processing functions */
inline snd_pcm_sframes_t gst_alsa_update_avail (GstAlsa * this);
inline gboolean gst_alsa_pcm_wait (GstAlsa * this);
inline gboolean gst_alsa_start (GstAlsa * this);
gboolean gst_alsa_xrun_recovery (GstAlsa * this);
/* format conversions */
inline snd_pcm_uframes_t gst_alsa_timestamp_to_samples (GstAlsa * this,
GstClockTime time);
inline GstClockTime gst_alsa_samples_to_timestamp (GstAlsa * this,
snd_pcm_uframes_t samples);
inline snd_pcm_uframes_t gst_alsa_bytes_to_samples (GstAlsa * this,
guint bytes);
inline guint gst_alsa_samples_to_bytes (GstAlsa * this,
snd_pcm_uframes_t samples);
inline GstClockTime gst_alsa_bytes_to_timestamp (GstAlsa * this,
guint bytes);
inline guint gst_alsa_timestamp_to_bytes (GstAlsa * this,
GstClockTime time);
/* debugging functions (useful in gdb) - require running with --gst-debug=alsa:4 or better */
void gst_alsa_sw_params_dump (GstAlsa * this,
snd_pcm_sw_params_t * sw_params);
void gst_alsa_hw_params_dump (GstAlsa * this,
snd_pcm_hw_params_t * hw_params);
G_END_DECLS
#endif /* __GST_ALSA_H__ */

214
ext/alsa/gstalsaclock.c
View file

@ -1,214 +0,0 @@
/*
* Copyright (C) 2001 CodeFactory AB
* Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se>
* Copyright (C) 2001-2002 Andy Wingo <apwingo@eos.ncsu.edu>
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstalsaclock.h"
/* clock functions */
static void gst_alsa_clock_class_init (gpointer g_class, gpointer class_data);
static void gst_alsa_clock_init (GstAlsaClock * clock);
static GstClockTime gst_alsa_clock_get_internal_time (GstClock * clock);
static guint64 gst_alsa_clock_get_resolution (GstClock * clock);
static GstClockEntryStatus gst_alsa_clock_wait (GstClock * clock,
GstClockEntry * entry);
static void gst_alsa_clock_unlock (GstClock * clock, GstClockEntry * entry);
static GstClockClass *clock_parent_class = NULL;
/* static guint gst_alsa_clock_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_alsa_clock_get_type (void)
{
static GType clock_type = 0;
if (!clock_type) {
static const GTypeInfo clock_info = {
sizeof (GstAlsaClockClass),
NULL,
NULL,
gst_alsa_clock_class_init,
NULL,
NULL,
sizeof (GstAlsaClock),
4,
(GInstanceInitFunc) gst_alsa_clock_init,
NULL
};
clock_type = g_type_register_static (GST_TYPE_CLOCK, "GstAlsaClock",
&clock_info, 0);
}
return clock_type;
}
static void
gst_alsa_clock_class_init (gpointer g_class, gpointer class_data)
{
GObjectClass *gobject_class;
GstObjectClass *gstobject_class;
GstClockClass *gstclock_class;
GstAlsaClockClass *klass;
klass = (GstAlsaClockClass *) g_class;
gobject_class = (GObjectClass *) klass;
gstobject_class = (GstObjectClass *) klass;
gstclock_class = (GstClockClass *) klass;
clock_parent_class = g_type_class_ref (GST_TYPE_CLOCK);
gstclock_class->get_internal_time = gst_alsa_clock_get_internal_time;
gstclock_class->get_resolution = gst_alsa_clock_get_resolution;
gstclock_class->wait = gst_alsa_clock_wait;
gstclock_class->unlock = gst_alsa_clock_unlock;
}
static void
gst_alsa_clock_init (GstAlsaClock * clock)
{
gst_object_set_name (GST_OBJECT (clock), "GstAlsaClock");
clock->start_time = GST_CLOCK_TIME_NONE;
}
GstAlsaClock *
gst_alsa_clock_new (gchar * name, GstAlsaClockGetTimeFunc get_time,
GstAlsa * owner)
{
GstAlsaClock *alsa_clock =
GST_ALSA_CLOCK (g_object_new (GST_TYPE_ALSA_CLOCK, NULL));
g_assert (alsa_clock);
alsa_clock->get_time = get_time;
alsa_clock->owner = owner;
alsa_clock->adjust = 0;
gst_object_set_name (GST_OBJECT (alsa_clock), name);
gst_object_set_parent (GST_OBJECT (alsa_clock), GST_OBJECT (owner));
return alsa_clock;
}
void
gst_alsa_clock_start (GstAlsaClock * clock)
{
g_assert (!GST_CLOCK_TIME_IS_VALID (clock->start_time));
if (clock->owner->format) {
clock->start_time = gst_clock_get_event_time (GST_CLOCK (clock))
- clock->get_time (clock->owner);
} else {
clock->start_time = gst_clock_get_event_time (GST_CLOCK (clock));
}
}
void
gst_alsa_clock_stop (GstAlsaClock * clock)
{
GTimeVal timeval;
g_get_current_time (&timeval);
g_assert (GST_CLOCK_TIME_IS_VALID (clock->start_time));
clock->adjust +=
GST_TIMEVAL_TO_TIME (timeval) -
gst_clock_get_event_time (GST_CLOCK (clock));
clock->start_time = GST_CLOCK_TIME_NONE;
}
static GstClockTime
gst_alsa_clock_get_internal_time (GstClock * clock)
{
GstAlsaClock *alsa_clock = GST_ALSA_CLOCK (clock);
if (GST_CLOCK_TIME_IS_VALID (alsa_clock->start_time)) {
return alsa_clock->get_time (alsa_clock->owner) + alsa_clock->start_time;
} else {
GTimeVal timeval;
g_get_current_time (&timeval);
return GST_TIMEVAL_TO_TIME (timeval) + alsa_clock->adjust;
}
}
static guint64
gst_alsa_clock_get_resolution (GstClock * clock)
{
GstAlsaClock *this = GST_ALSA_CLOCK (clock);
if (this->owner->format) {
return GST_SECOND / this->owner->format->rate;
} else {
/* FIXME: is there an "unknown" value? We just return the sysclock's time by default */
return 1 * GST_USECOND;
}
}
static GstClockEntryStatus
gst_alsa_clock_wait (GstClock * clock, GstClockEntry * entry)
{
GstClockTime target, entry_time, glib_start, glib_cur;
GstClockTimeDiff diff;
GstAlsaClock *this = GST_ALSA_CLOCK (clock);
GTimeVal t;
entry_time = gst_alsa_clock_get_internal_time (clock);
diff = GST_CLOCK_ENTRY_TIME (entry) - gst_clock_get_time (clock);
if (diff < 0)
return GST_CLOCK_ENTRY_EARLY;
if (diff > clock->max_diff) {
GST_INFO_OBJECT (this,
"GstAlsaClock: abnormal clock request diff: %" GST_TIME_FORMAT ") >"
" %" GST_TIME_FORMAT, GST_TIME_ARGS (diff),
GST_TIME_ARGS (clock->max_diff));
return GST_CLOCK_ENTRY_EARLY;
}
target = entry_time + diff;
GST_DEBUG_OBJECT (this, "real_target %" GST_TIME_FORMAT
" target %" GST_TIME_FORMAT
" now %" GST_TIME_FORMAT,
GST_TIME_ARGS (target), GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)),
GST_TIME_ARGS (entry_time));
g_get_current_time (&t);
glib_cur = glib_start = GST_TIMEVAL_TO_TIME (t);
while (gst_alsa_clock_get_internal_time (clock) < target &&
this->last_unlock < entry_time && glib_start + diff * 1.5 > glib_cur) {
g_usleep (gst_alsa_clock_get_resolution (clock) * G_USEC_PER_SEC /
GST_SECOND);
g_get_current_time (&t);
glib_cur = GST_TIMEVAL_TO_TIME (t);
}
return entry->status;
}
static void
gst_alsa_clock_unlock (GstClock * clock, GstClockEntry * entry)
{
GstAlsaClock *this = GST_ALSA_CLOCK (clock);
this->last_unlock = this->get_time (this->owner);
}

62
ext/alsa/gstalsaclock.h
View file

@ -1,62 +0,0 @@
/*
* Copyright (C) 2001 CodeFactory AB
* Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se>
* Copyright (C) 2001-2002 Andy Wingo <apwingo@eos.ncsu.edu>
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* 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_CLOCK_H__
#define __GST_ALSA_CLOCK_H__
#include "gstalsa.h"
G_BEGIN_DECLS
#define GST_ALSA_CLOCK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_CLOCK,GstAlsaClock))
#define GST_ALSA_CLOCK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_CLOCK,GstAlsaClockClass))
#define GST_IS_ALSA_CLOCK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_CLOCK))
#define GST_IS_ALSA_CLOCK_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_CLOCK))
#define GST_TYPE_ALSA_CLOCK (gst_alsa_clock_get_type())
typedef GstClockTime (*GstAlsaClockGetTimeFunc) (GstAlsa *);
struct _GstAlsaClock {
GstSystemClock parent;
GstAlsaClockGetTimeFunc get_time;
GstAlsa * owner;
GstClockTimeDiff adjust; /* adjustment to real clock (recalculated when stopping) */
GstClockTime start_time; /* time when the stream started (NONE when stopped) */
GstClockTime last_unlock; /* time of last unlock request */
};
struct _GstAlsaClockClass {
GstSystemClockClass parent_class;
};
GType gst_alsa_clock_get_type (void);
GstAlsaClock * gst_alsa_clock_new (gchar * name,
GstAlsaClockGetTimeFunc func,
GstAlsa * owner);
void gst_alsa_clock_start (GstAlsaClock * clock);
void gst_alsa_clock_stop (GstAlsaClock * clock);
G_END_DECLS
#endif /* __GST_ALSA_CLOCK_H__ */

198
ext/alsa/gstalsamixer.c
View file

@ -17,113 +17,91 @@
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstalsamixer.h"
/* elementfactory information */
static GstElementDetails gst_alsa_mixer_details =
GST_ELEMENT_DETAILS ("Alsa Mixer",
"Generic/Audio",
"Control sound input and output levels with ALSA",
"Leif Johnson <leif@ambient.2y.net>");
static void gst_alsa_interface_init (GstImplementsInterfaceClass * klass);
static void gst_alsa_mixer_class_init (gpointer g_class, gpointer class_data);
static void gst_alsa_mixer_init (GstAlsaMixer * mixer);
static void gst_alsa_mixer_interface_init (GstMixerClass * klass);
static gboolean gst_alsa_mixer_supported (GstImplementsInterface * iface,
GType iface_type);
#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);
/* GStreamer stuff */
static GstElementStateReturn gst_alsa_mixer_change_state (GstElement * element);
static void gst_alsa_mixer_build_list (GstAlsaMixer * mixer);
static void gst_alsa_mixer_free_list (GstAlsaMixer * mixer);
/* interface implementation */
/* 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);
/*** GOBJECT STUFF ************************************************************/
static GstAlsa *parent_class = NULL;
GType
gst_alsa_mixer_get_type (void)
static void
gst_alsa_mixer_base_init (gpointer klass)
{
static GType alsa_mixer_type = 0;
if (!alsa_mixer_type) {
static const GTypeInfo alsa_mixer_info = {
sizeof (GstAlsaMixerClass),
NULL,
NULL,
gst_alsa_mixer_class_init,
NULL,
NULL,
sizeof (GstAlsaMixer),
0,
(GInstanceInitFunc) gst_alsa_mixer_init,
};
static const GInterfaceInfo alsa_iface_info = {
(GInterfaceInitFunc) gst_alsa_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo alsa_mixer_iface_info = {
(GInterfaceInitFunc) gst_alsa_mixer_interface_init,
NULL,
NULL,
};
alsa_mixer_type =
g_type_register_static (GST_TYPE_ALSA, "GstAlsaMixer", &alsa_mixer_info,
0);
g_type_add_interface_static (alsa_mixer_type, GST_TYPE_IMPLEMENTS_INTERFACE,
&alsa_iface_info);
g_type_add_interface_static (alsa_mixer_type, GST_TYPE_MIXER,
&alsa_mixer_iface_info);
}
return alsa_mixer_type;
gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
&gst_alsa_mixer_details);
}
static void
gst_alsa_mixer_class_init (gpointer g_class, gpointer class_data)
gst_alsa_mixer_class_init (GstAlsaMixerClass * klass)
{
GObjectClass *object_class;
GstElementClass *element_class;
GstAlsaClass *klass;
klass = (GstAlsaClass *) g_class;
object_class = (GObjectClass *) g_class;
element_class = (GstElementClass *) g_class;
if (parent_class == NULL)
parent_class = g_type_class_ref (GST_TYPE_ALSA);
element_class = (GstElementClass *) klass;
element_class->change_state = gst_alsa_mixer_change_state;
gst_element_class_set_details (element_class, &gst_alsa_mixer_details);
}
static void
@ -136,10 +114,9 @@ static gboolean
gst_alsa_mixer_open (GstAlsaMixer * mixer)
{
gint err, device;
GstAlsa *alsa = GST_ALSA (mixer);
gchar *nocomma = NULL;
mixer->mixer_handle = NULL;
g_return_val_if_fail (mixer->mixer_handle == NULL, FALSE);
/* open and initialize the mixer device */
err = snd_mixer_open (&mixer->mixer_handle, 0);
@ -148,6 +125,8 @@ gst_alsa_mixer_open (GstAlsaMixer * mixer)
mixer->mixer_handle = NULL;
return FALSE;
}
#if 0
GstAlsa *alsa = GST_ALSA (mixer);
if (!strncmp (alsa->device, "hw:", 3))
nocomma = g_strdup (alsa->device);
@ -155,6 +134,9 @@ gst_alsa_mixer_open (GstAlsaMixer * mixer)
nocomma = g_strdup (alsa->device + 4);
else
goto error;
#else
nocomma = g_strdup ("hw:0");
#endif
if (strchr (nocomma, ','))
strchr (nocomma, ',')[0] = '\0';
@ -181,7 +163,7 @@ gst_alsa_mixer_open (GstAlsaMixer * mixer)
gchar *name;
if (!snd_card_get_name (device, &name))
alsa->cardname = name;
mixer->cardname = name;
}
g_free (nocomma);
@ -198,48 +180,18 @@ error:
static void
gst_alsa_mixer_close (GstAlsaMixer * mixer)
{
GstAlsa *alsa = GST_ALSA (mixer);
if (mixer->mixer_handle == NULL)
return;
if (alsa->cardname) {
g_free (alsa->cardname);
alsa->cardname = NULL;
if (mixer->cardname) {
free (mixer->cardname);
mixer->cardname = NULL;
}
snd_mixer_close (mixer->mixer_handle);
mixer->mixer_handle = NULL;
}
static void
gst_alsa_interface_init (GstImplementsInterfaceClass * klass)
{
klass->supported = gst_alsa_mixer_supported;
}
static void
gst_alsa_mixer_interface_init (GstMixerClass * klass)
{
GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE;
/* set up the interface hooks */
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
gst_alsa_mixer_supported (GstImplementsInterface * iface, GType iface_type)
{
g_assert (iface_type == GST_TYPE_MIXER);
return (GST_ALSA_MIXER (iface)->mixer_handle != NULL);
}
static void
gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
{
@ -349,8 +301,6 @@ gst_alsa_mixer_free_list (GstAlsaMixer * mixer)
mixer->tracklist = NULL;
}
/*** GSTREAMER FUNCTIONS ******************************************************/
static GstElementStateReturn
gst_alsa_mixer_change_state (GstElement * element)
{
@ -382,6 +332,29 @@ gst_alsa_mixer_change_state (GstElement * element)
/*** INTERFACE IMPLEMENTATION *************************************************/
static void
gst_alsa_mixer_interface_init (GstMixerClass * klass)
{
GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE;
/* set up the interface hooks */
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
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)
{
@ -559,13 +532,16 @@ static const gchar *
gst_alsa_mixer_get_option (GstMixer * mixer, GstMixerOptions * opts)
{
GstAlsaMixerOptions *alsa_opts = (GstAlsaMixerOptions *) opts;
gint idx = -1;
gint ret;
guint idx;
g_return_val_if_fail (GST_ALSA_MIXER (mixer)->mixer_handle != NULL, NULL);
gst_alsa_mixer_update (GST_ALSA_MIXER (mixer), NULL);
snd_mixer_selem_get_enum_item (alsa_opts->element, 0, &idx);
return g_list_nth_data (opts->values, idx);
ret = snd_mixer_selem_get_enum_item (alsa_opts->element, 0, &idx);
if (ret == 0)
return g_list_nth_data (opts->values, idx);
else
return snd_strerror (ret); /* feeble attempt at error handling */
}

26
ext/alsa/gstalsamixer.h
View file

@ -16,37 +16,51 @@
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GST_ALSA_MIXER_H__
#define __GST_ALSA_MIXER_H__
#include "gstalsa.h"
#include "gstalsamixeroptions.h"
#include "gstalsamixertrack.h"
#include <gst/interfaces/mixer.h>
#include "gstalsamixeroptions.h"
#include "gstalsamixertrack.h"
G_BEGIN_DECLS
#define GST_ALSA_MIXER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER,GstAlsaMixer))
#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 struct _GstAlsaMixer GstAlsaMixer;
typedef struct _GstAlsaMixerClass GstAlsaMixerClass;
struct _GstAlsaMixer {
GstAlsa parent;
GList * tracklist; /* list of available tracks */
snd_mixer_t * mixer_handle;
GstElement parent;
GList * tracklist; /* list of available tracks */
snd_mixer_t * mixer_handle;
gchar * cardname;
};
struct _GstAlsaMixerClass {
GstAlsaClass parent;
GstElementClass parent;
};
GType gst_alsa_mixer_get_type (void);
G_END_DECLS
#endif /* __GST_ALSA_MIXER_H__ */

9
ext/alsa/gstalsamixeroptions.h
View file

@ -16,14 +16,18 @@
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GST_ALSA_MIXER_OPTIONS_H__
#define __GST_ALSA_MIXER_OPTIONS_H__
#include "gstalsa.h"
#include <gst/interfaces/mixeroptions.h>
G_BEGIN_DECLS
#define GST_ALSA_MIXER_OPTIONS_TYPE (gst_alsa_mixer_options_get_type ())
#define GST_ALSA_MIXER_OPTIONS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER_OPTIONS,GstAlsaMixerOptions))
#define GST_ALSA_MIXER_OPTIONS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_MIXER_OPTIONS,GstAlsaMixerOptionsClass))
@ -31,9 +35,11 @@ G_BEGIN_DECLS
#define GST_IS_ALSA_MIXER_OPTIONS_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_MIXER_OPTIONS))
#define GST_TYPE_ALSA_MIXER_OPTIONS (gst_alsa_mixer_options_get_type())
typedef struct _GstAlsaMixerOptions GstAlsaMixerOptions;
typedef struct _GstAlsaMixerOptionsClass GstAlsaMixerOptionsClass;
struct _GstAlsaMixerOptions {
GstMixerOptions parent;
snd_mixer_elem_t *element; /* the ALSA mixer element for this track */
@ -44,10 +50,13 @@ struct _GstAlsaMixerOptionsClass {
GstMixerOptionsClass parent;
};
GType gst_alsa_mixer_options_get_type (void);
GstMixerOptions *gst_alsa_mixer_options_new (snd_mixer_elem_t * element,
gint track_num);
G_END_DECLS
#endif /* __GST_ALSA_MIXER_OPTIONS_H__ */

7
ext/alsa/gstalsamixertrack.h
View file

@ -16,14 +16,18 @@
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GST_ALSA_MIXER_TRACK_H__
#define __GST_ALSA_MIXER_TRACK_H__
#include "gstalsa.h"
#include <gst/interfaces/mixertrack.h>
G_BEGIN_DECLS
#define GST_ALSA_MIXER_TRACK_TYPE (gst_alsa_mixer_track_get_type ())
#define GST_ALSA_MIXER_TRACK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER_TRACK,GstAlsaMixerTrack))
#define GST_ALSA_MIXER_TRACK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_MIXER_TRACK,GstAlsaMixerTrackClass))
@ -37,6 +41,7 @@ typedef struct _GstAlsaMixerTrackClass GstAlsaMixerTrackClass;
#define GST_ALSA_MIXER_TRACK_CAPTURE (1<<0)
#define GST_ALSA_MIXER_TRACK_PLAYBACK (1<<1)
#define GST_ALSA_MAX_CHANNELS 32 /* tracks can have up to 32 channels */
struct _GstAlsaMixerTrack {
GstMixerTrack parent;
snd_mixer_elem_t *element; /* the ALSA mixer element for this track */
@ -57,6 +62,8 @@ GstMixerTrack * gst_alsa_mixer_track_new (snd_mixer_elem_t * element,
gint flags,
gint alsa_flags);
G_END_DECLS
#endif /* __GST_ALSA_MIXER_TRACK_H__ */

8
ext/alsa/gstalsaplugin.c
View file

@ -56,11 +56,9 @@ plugin_init (GstPlugin * plugin)
{
int err;
/*
if (!gst_element_register (plugin, "alsamixer", GST_RANK_NONE,
GST_TYPE_ALSA_MIXER))
return FALSE;
*/
if (!gst_element_register (plugin, "alsamixer", GST_RANK_NONE,
GST_TYPE_ALSA_MIXER))
return FALSE;
if (!gst_element_register (plugin, "alsasrc", GST_RANK_PRIMARY,
GST_TYPE_ALSA_SRC))
return FALSE;