#include <stdlib.h>
#include <stdio.h>
#include <string.h>
-#include <linux/soundcard.h>
+#include <sys/soundcard.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
}
/* non blocking mode */
- fcntl(audio_fd, F_SETFL, O_NONBLOCK);
+ if (!is_output)
+ fcntl(audio_fd, F_SETFL, O_NONBLOCK);
s->frame_size = AUDIO_BLOCK_SIZE;
#if 0
if (s->buffer_ptr >= AUDIO_BLOCK_SIZE) {
for(;;) {
ret = write(s->fd, s->buffer, AUDIO_BLOCK_SIZE);
- if (ret != 0)
+ if (ret > 0)
break;
if (ret < 0 && (errno != EAGAIN && errno != EINTR))
return -EIO;
if (ret < 0) {
av_free(st);
return -EIO;
- } else {
- /* take real parameters */
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- st->codec.codec_id = s->codec_id;
- st->codec.sample_rate = s->sample_rate;
- st->codec.channels = s->channels;
- return 0;
}
+
+ /* take real parameters */
+ st->codec.codec_type = CODEC_TYPE_AUDIO;
+ st->codec.codec_id = s->codec_id;
+ st->codec.sample_rate = s->sample_rate;
+ st->codec.channels = s->channels;
+
+ av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */
+ return 0;
}
static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
{
AudioData *s = s1->priv_data;
- int ret;
-
+ int ret, bdelay;
+ int64_t cur_time;
+ struct audio_buf_info abufi;
+
if (av_new_packet(pkt, s->frame_size) < 0)
return -EIO;
for(;;) {
}
}
pkt->size = ret;
+
+ /* compute pts of the start of the packet */
+ cur_time = av_gettime();
+ bdelay = ret;
+ if (ioctl(s->fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) {
+ bdelay += abufi.bytes;
+ }
+ /* substract time represented by the number of bytes in the audio fifo */
+ cur_time -= (bdelay * 1000000LL) / (s->sample_rate * s->channels);
+
+ /* convert to wanted units */
+ pkt->pts = cur_time & ((1LL << 48) - 1);
+
if (s->flip_left && s->channels == 2) {
int i;
short *p = (short *) pkt->data;
return 0;
}
-AVInputFormat audio_in_format = {
+static AVInputFormat audio_in_format = {
"audio_device",
"audio grab and output",
sizeof(AudioData),
audio_read_header,
audio_read_packet,
audio_read_close,
- flags: AVFMT_NOFILE,
+ .flags = AVFMT_NOFILE,
};
-AVOutputFormat audio_out_format = {
+static AVOutputFormat audio_out_format = {
"audio_device",
"audio grab and output",
"",
audio_write_header,
audio_write_packet,
audio_write_trailer,
- flags: AVFMT_NOFILE,
+ .flags = AVFMT_NOFILE,
};
int audio_init(void)