static void
dxr3audiosink_chain_ac3 (GstPad * pad, GstData * _data)
{
Dxr3AudioSink *sink;
gint bytes_written = 0;
GstBuffer *buf;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (_data != NULL);
sink = DXR3AUDIOSINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT (_data)) {
dxr3audiosink_handle_event (pad, GST_EVENT (_data));
return;
}
buf = GST_BUFFER (_data);
if (sink->mode != DXR3AUDIOSINK_MODE_AC3) {
/* Switch to AC3 mode. */
dxr3audiosink_set_mode_ac3 (sink);
}
if (GST_OBJECT_FLAG_IS_SET (sink, DXR3AUDIOSINK_OPEN)) {
int event;
if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
/* We have a new scr value. */
/* fprintf (stderr, "------ Audio Time %.04f\n", */
/* (double) GST_BUFFER_TIMESTAMP (buf) / GST_SECOND); */
sink->scr = GSTTIME_TO_MPEGTIME (GST_BUFFER_TIMESTAMP (buf));
}
/* Push the new data into the padder. */
ac3p_push_data (sink->padder, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
/* Parse the data. */
event = ac3p_parse (sink->padder);
while (event != AC3P_EVENT_PUSH) {
switch (event) {
case AC3P_EVENT_FRAME:
/* We have a new frame: */
/* Update the system reference clock (SCR) in the card. */
{
unsigned in, out, odelay;
unsigned diff;
ioctl (sink->control_fd, EM8300_IOCTL_SCR_GET, &out);
ioctl (sink->audio_fd, SNDCTL_DSP_GETODELAY, &odelay);
/* 192000 bytes/sec */
in = MPEGTIME_TO_DXRTIME (sink->scr - (odelay * 90) / 192);
diff = in > out ? in - out : out - in;
if (diff > 1800) {
dxr3audiosink_set_scr (sink, in);
}
}
/* Update our SCR value. */
sink->scr += TIME_FOR_BYTES (ac3p_frame_size (sink->padder));
/* Write the frame to the sound device. */
bytes_written = write (sink->audio_fd, ac3p_frame (sink->padder),
AC3P_IEC_FRAME_SIZE);
if (bytes_written < AC3P_IEC_FRAME_SIZE) {
fprintf (stderr, "dxr3audiosink: Warning: %d bytes should be "
"written, only %d bytes written\n",
AC3P_IEC_FRAME_SIZE, bytes_written);
}
break;
}
event = ac3p_parse (sink->padder);
}
}
gst_buffer_unref (buf);
}
static gboolean
dxr3videosink_handle_event (GstPad * pad, GstEvent * event)
{
GstEventType type;
Dxr3VideoSink *sink;
sink = DXR3VIDEOSINK (gst_pad_get_parent (pad));
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_EMPTY:
//fprintf (stderr, "++++++ Video empty event\n");
{
/* FIXME: Handle this with a discontinuity or something. */
/* Write an MPEG2 sequence end code, to ensure that the card
actually displays the last picture. Apparently some DVDs are
encoded without proper sequence end codes. */
static const guint8 sec[4] = { 0x00, 0x00, 0x01, 0xb7 };
if (sink->cur_buf != NULL) {
dxr3videosink_write_data (sink, 0);
}
write (sink->video_fd, &sec, 4);
}
break;
case GST_EVENT_DISCONTINUOUS:
//fprintf (stderr, "++++++ Video discont event\n");
{
gint64 time;
gboolean has_time;
unsigned cur_scr, mpeg_scr, diff;
has_time = gst_event_discont_get_value (event, GST_FORMAT_TIME, &time);
if (has_time) {
/* fprintf (stderr, "^^^^^^ Discontinuous event has time %.4f\n", */
/* (double) time / GST_SECOND); */
/* If the SCR in the card is way off, fix it. */
ioctl (sink->control_fd, EM8300_IOCTL_SCR_GET, &cur_scr);
mpeg_scr = MPEGTIME_TO_DXRTIME (GSTTIME_TO_MPEGTIME (time));
diff = cur_scr > mpeg_scr ? cur_scr - mpeg_scr : mpeg_scr - cur_scr;
if (diff > 1800) {
unsigned zero = 0;
/* fprintf (stderr, "====== Adjusting SCR from video\n"); */
ioctl (sink->control_fd, EM8300_IOCTL_SCR_SET, &zero);
ioctl (sink->control_fd, EM8300_IOCTL_SCR_SET, &mpeg_scr);
}
} else {
/* fprintf (stderr, "^^^^^^ Discontinuous event has no time\n"); */
}
}
break;
case GST_EVENT_FLUSH:
dxr3videosink_reset_parser (sink);
break;
default:
gst_pad_event_default (pad, event);
break;
}
return TRUE;
}
static void
dxr3audiosink_chain_pcm (GstPad * pad, GstData * _data)
{
Dxr3AudioSink *sink;
gint bytes_written = 0;
GstBuffer *buf;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (_data != NULL);
sink = DXR3AUDIOSINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT (_data)) {
dxr3audiosink_handle_event (pad, GST_EVENT (_data));
return;
}
buf = GST_BUFFER (_data);
if (sink->mode != DXR3AUDIOSINK_MODE_PCM) {
/* Switch to PCM mode. */
dxr3audiosink_set_mode_pcm (sink);
}
if (GST_OBJECT_FLAG_IS_SET (sink, DXR3AUDIOSINK_OPEN)) {
if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
/* We have a new scr value. */
sink->scr = GSTTIME_TO_MPEGTIME (GST_BUFFER_TIMESTAMP (buf));
}
/* Update the system reference clock (SCR) in the card. */
{
unsigned in, out, odelay;
unsigned diff;
ioctl (sink->control_fd, EM8300_IOCTL_SCR_GET, &out);
ioctl (sink->audio_fd, SNDCTL_DSP_GETODELAY, &odelay);
in = MPEGTIME_TO_DXRTIME (sink->scr - (odelay * 90) / 192);
diff = in > out ? in - out : out - in;
if (diff > 1800) {
dxr3audiosink_set_scr (sink, in);
}
}
/* Update our SCR value. */
sink->scr += (unsigned) (GST_BUFFER_SIZE (buf) *
(90000.0 / ((float) sink->rate * 4)));
/* Write the buffer to the sound device. */
bytes_written = write (sink->audio_fd, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
if (bytes_written < GST_BUFFER_SIZE (buf)) {
fprintf (stderr, "dxr3audiosink: Warning: %d bytes should be "
"written, only %d bytes written\n",
GST_BUFFER_SIZE (buf), bytes_written);
}
}
gst_buffer_unref (buf);
}
