alsasink

alsasink — Output to a sound card via ALSA

Properties

gchar * card-name Read
gchar * device Read / Write
gchar * device-name Read

Types and Values

struct GstAlsaSink

Description

Synopsis

Element Information

plugin

alsa

author

Wim Taymans <wim@fluendo.com>

class

Sink/Audio

Element Pads

name

sink

direction

sink

presence

always

details

audio/x-raw, format=(string){ S8, U8, S16LE, S16BE, U16LE, U16BE, S24_32LE, S24_32BE, U24_32LE, U24_32BE, S32LE, S32BE, U32LE, U32BE, S24LE, S24BE, U24LE, U24BE, S20LE, S20BE, U20LE, U20BE, S18LE, S18BE, U18LE, U18BE, F32LE, F32BE, F64LE, F64BE }, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]

audio/x-ac3, framed=(boolean)true

audio/x-eac3, framed=(boolean)true

audio/x-dts, framed=(boolean)true, block-size=(int){ 512, 1024, 2048 }

audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)[ 1, 2 ], parsed=(boolean)true

Functions

Types and Values

struct GstAlsaSink

struct GstAlsaSink {
  GstAudioSink    sink;

  gchar                 *device;

  snd_pcm_t             *handle;
  snd_pcm_hw_params_t   *hwparams;
  snd_pcm_sw_params_t   *swparams;

  snd_pcm_access_t access;
  snd_pcm_format_t format;
  guint rate;
  guint channels;
  gint bpf;
  gboolean iec958;
  gboolean need_swap;

  guint buffer_time;
  guint period_time;
  snd_pcm_uframes_t buffer_size;
  snd_pcm_uframes_t period_size;

  GstCaps *cached_caps;

  GMutex alsa_lock;
  GMutex delay_lock;
};

Property Details

The “card-name” property

  “card-name”                gchar *

Human-readable name of the sound card.

Flags: Read

Default value: ""


The “device” property

  “device”                   gchar *

ALSA device, as defined in an asound configuration file.

Flags: Read / Write

Default value: "default"


The “device-name” property

  “device-name”              gchar *

Human-readable name of the sound device.

Flags: Read

Default value: ""