#include <alsa/asoundlib.h>
#include "avdevice.h"
#include "alsa-audio.h"
Go to the source code of this file.
Functions | |
static av_cold int | audio_write_header (AVFormatContext *s1) |
static int | audio_write_packet (AVFormatContext *s1, AVPacket *pkt) |
Variables | |
AVOutputFormat | ff_alsa_muxer |
This avdevice encoder allows to play audio to an ALSA (Advanced Linux Sound Architecture) device.
The filename parameter is the name of an ALSA PCM device capable of capture, for example "default" or "plughw:1"; see the ALSA documentation for naming conventions. The empty string is equivalent to "default".
The playback period is set to the lower value available for the device, which gives a low latency suitable for real-time playback.
Definition in file alsa-audio-enc.c.
static av_cold int audio_write_header | ( | AVFormatContext * | s1 | ) | [static] |
Definition at line 45 of file alsa-audio-enc.c.
static int audio_write_packet | ( | AVFormatContext * | s1, | |
AVPacket * | pkt | |||
) | [static] |
Definition at line 72 of file alsa-audio-enc.c.
Initial value:
{ "alsa", NULL_IF_CONFIG_SMALL("ALSA audio output"), "", "", sizeof(AlsaData), DEFAULT_CODEC_ID, CODEC_ID_NONE, audio_write_header, audio_write_packet, ff_alsa_close, .flags = AVFMT_NOFILE, }
Definition at line 104 of file alsa-audio-enc.c.