27 #include <soundcard.h>
29 #include <sys/soundcard.h>
34 #include <sys/ioctl.h>
78 struct audio_buf_info abufi;
87 if (ret<0)
return AVERROR(errno);
95 if (ioctl(s->
fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) {
96 bdelay += abufi.bytes;
106 short *p = (
short *) pkt->
data;
108 for (i = 0; i < ret; i += 4) {
145 .priv_class = &oss_demuxer_class,
void av_free_packet(AVPacket *pkt)
Free a packet.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
AVInputFormat ff_oss_demuxer
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_EOF
End of file.
static av_cold int read_close(AVFormatContext *ctx)
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
AVCodecContext * codec
Codec context associated with this stream.
common internal API header
char filename[1024]
input or output filename
static int read_header(FFV1Context *f)
static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
int64_t av_gettime(void)
Get the current time in microseconds.
static const AVClass oss_demuxer_class
Libavcodec external API header.
enum AVMediaType codec_type
int sample_rate
samples per second
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
int ff_oss_audio_open(AVFormatContext *s1, int is_output, const char *audio_device)
Describe the class of an AVClass context structure.
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
int channels
number of audio channels
void * priv_data
Format private data.
int ff_oss_audio_close(OSSAudioData *s)
static int audio_read_close(AVFormatContext *s1)
static const AVOption options[]
static int audio_read_header(AVFormatContext *s1)
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...