40 #include <alsa/asoundlib.h>
66 res =
ff_alsa_open(s1, SND_PCM_STREAM_PLAYBACK, &sample_rate,
70 "sample rate %d not available, nearest is %d\n",
102 while ((res = snd_pcm_writei(s->
h, buf, size)) < 0) {
103 if (res == -EAGAIN) {
130 pkt.
data = (*frame)->data[0];
132 pkt.
dts = (*frame)->pkt_dts;
139 int64_t *dts, int64_t *wall)
142 snd_pcm_sframes_t delay = 0;
144 snd_pcm_delay(s->
h, &delay);
173 .priv_class = &alsa_muxer_class,
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
int64_t av_frame_get_pkt_duration(const AVFrame *frame)
This structure describes decoded (raw) audio or video data.
#define LIBAVUTIL_VERSION_INT
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int64_t timestamp
current timestamp, without latency applied.
AVOutputFormat ff_alsa_muxer
ALSA input and output: definitions and structures.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
void(* reorder_func)(const void *, void *, int)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
AVStream ** streams
A list of all streams in the file.
static av_cold int audio_write_header(AVFormatContext *s1)
static int audio_write_frame(AVFormatContext *s1, int stream_index, AVFrame **frame, unsigned flags)
int ff_alsa_extend_reorder_buf(AlsaData *s, int min_size)
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Main libavdevice API header.
AVCodecID
Identify the syntax and semantics of the bitstream.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt)
enum AVMediaType codec_type
General type of the encoded data.
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
static int write_trailer(AVFormatContext *s1)
static const AVClass alsa_muxer_class
int64_t av_gettime(void)
Get the current time in microseconds.
int ff_alsa_xrun_recover(AVFormatContext *s1, int err)
Try to recover from ALSA buffer underrun.
av_cold int ff_alsa_close(AVFormatContext *s1)
Close the ALSA PCM.
static int audio_get_device_list(AVFormatContext *h, AVDeviceInfoList *device_list)
static void audio_get_output_timestamp(AVFormatContext *s1, int stream, int64_t *dts, int64_t *wall)
Describe the class of an AVClass context structure.
int ff_alsa_get_device_list(AVDeviceInfoList *device_list, snd_pcm_stream_t stream_type)
static int get_device_list(AVOpenCLDeviceList *device_list)
int sample_rate
Audio only.
void * priv_data
Format private data.
static void write_header(FFV1Context *f)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
int frame_size
bytes per sample * channels
AVCodecParameters * codecpar
This structure stores compressed data.
int reorder_buf_size
in frames
#define AV_NOPTS_VALUE
Undefined timestamp value.
av_cold int ff_alsa_open(AVFormatContext *ctx, snd_pcm_stream_t mode, unsigned int *sample_rate, int channels, enum AVCodecID *codec_id)
Open an ALSA PCM.