static gboolean
gst_musepackdec_handle_seek_event (GstMusepackDec * dec, GstEvent * event)
{
GstSeekType start_type, stop_type;
GstSeekFlags flags;
GstSegment segment;
GstFormat format;
gboolean flush;
gdouble rate;
gint64 start, stop;
gint samplerate;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT) {
GST_DEBUG_OBJECT (dec, "seek failed: only TIME or DEFAULT format allowed");
return FALSE;
}
samplerate = g_atomic_int_get (&dec->rate);
if (format == GST_FORMAT_TIME) {
if (start_type != GST_SEEK_TYPE_NONE)
start = gst_util_uint64_scale_int (start, samplerate, GST_SECOND);
if (stop_type != GST_SEEK_TYPE_NONE)
stop = gst_util_uint64_scale_int (stop, samplerate, GST_SECOND);
}
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
if (flush)
gst_pad_push_event (dec->srcpad, gst_event_new_flush_start ());
else
gst_pad_pause_task (dec->sinkpad); /* not _stop_task()? */
GST_PAD_STREAM_LOCK (dec->sinkpad);
/* operate on segment copy until we know the seek worked */
segment = dec->segment;
gst_segment_do_seek (&segment, rate, GST_FORMAT_DEFAULT,
flags, start_type, start, stop_type, stop, NULL);
gst_pad_push_event (dec->sinkpad, gst_event_new_flush_stop (TRUE));
GST_DEBUG_OBJECT (dec, "segment: [%" G_GINT64_FORMAT "-%" G_GINT64_FORMAT
"] = [%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "]",
segment.start, segment.stop,
GST_TIME_ARGS (segment.start * GST_SECOND / dec->rate),
GST_TIME_ARGS (segment.stop * GST_SECOND / dec->rate));
GST_DEBUG_OBJECT (dec, "performing seek to sample %" G_GINT64_FORMAT,
segment.start);
if (segment.start >= segment.duration) {
GST_WARNING_OBJECT (dec, "seek out of bounds");
goto failed;
}
if (mpc_demux_seek_sample (dec->d, segment.start) != MPC_STATUS_OK)
goto failed;
if ((flags & GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
GST_DEBUG_OBJECT (dec, "posting SEGMENT_START message");
gst_element_post_message (GST_ELEMENT (dec),
gst_message_new_segment_start (GST_OBJECT (dec), GST_FORMAT_TIME,
gst_util_uint64_scale_int (segment.start, GST_SECOND, dec->rate)));
}
if (flush) {
gst_pad_push_event (dec->srcpad, gst_event_new_flush_stop (TRUE));
}
segment.position = segment.start;
dec->segment = segment;
gst_musepackdec_send_newsegment (dec);
GST_DEBUG_OBJECT (dec, "seek successful");
gst_pad_start_task (dec->sinkpad,
(GstTaskFunction) gst_musepackdec_loop, dec->sinkpad, NULL);
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return TRUE;
failed:
{
GST_WARNING_OBJECT (dec, "seek failed");
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return FALSE;
}
}
static void
gst_musepackdec_loop (GstPad * sinkpad)
{
GstMusepackDec *musepackdec;
GstFlowReturn flow;
GstBuffer *out;
GstMapInfo info;
mpc_frame_info frame;
mpc_status err;
gint num_samples, samplerate, bitspersample;
musepackdec = GST_MUSEPACK_DEC (GST_PAD_PARENT (sinkpad));
samplerate = g_atomic_int_get (&musepackdec->rate);
if (samplerate == 0) {
if (!gst_musepack_stream_init (musepackdec))
goto pause_task;
gst_musepackdec_send_newsegment (musepackdec);
samplerate = g_atomic_int_get (&musepackdec->rate);
}
bitspersample = g_atomic_int_get (&musepackdec->bps);
out = gst_buffer_new_allocate (NULL, MPC_DECODER_BUFFER_LENGTH * 4, NULL);
gst_buffer_map (out, &info, GST_MAP_READWRITE);
frame.buffer = (MPC_SAMPLE_FORMAT *) info.data;
err = mpc_demux_decode (musepackdec->d, &frame);
gst_buffer_unmap (out, &info);
if (err != MPC_STATUS_OK) {
GST_ERROR_OBJECT (musepackdec, "Failed to decode sample");
GST_ELEMENT_ERROR (musepackdec, STREAM, DECODE, (NULL), (NULL));
goto pause_task;
} else if (frame.bits == -1) {
goto eos_and_pause;
}
num_samples = frame.samples;
gst_buffer_set_size (out, num_samples * bitspersample);
GST_BUFFER_OFFSET (out) = musepackdec->segment.position;
GST_BUFFER_PTS (out) =
gst_util_uint64_scale_int (musepackdec->segment.position,
GST_SECOND, samplerate);
GST_BUFFER_DURATION (out) =
gst_util_uint64_scale_int (num_samples, GST_SECOND, samplerate);
musepackdec->segment.position += num_samples;
GST_LOG_OBJECT (musepackdec, "Pushing buffer, timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (out)));
flow = gst_pad_push (musepackdec->srcpad, out);
if (flow != GST_FLOW_OK) {
GST_DEBUG_OBJECT (musepackdec, "Flow: %s", gst_flow_get_name (flow));
goto pause_task;
}
/* check if we're at the end of a configured segment */
if (musepackdec->segment.stop != -1 &&
musepackdec->segment.position >= musepackdec->segment.stop) {
gint64 stop_time;
GST_DEBUG_OBJECT (musepackdec, "Reached end of configured segment");
if ((musepackdec->segment.flags & GST_SEEK_FLAG_SEGMENT) == 0)
goto eos_and_pause;
GST_DEBUG_OBJECT (musepackdec, "Posting SEGMENT_DONE message");
stop_time = gst_util_uint64_scale_int (musepackdec->segment.stop,
GST_SECOND, samplerate);
gst_element_post_message (GST_ELEMENT (musepackdec),
gst_message_new_segment_done (GST_OBJECT (musepackdec),
GST_FORMAT_TIME, stop_time));
gst_pad_push_event (musepackdec->srcpad,
gst_event_new_segment_done (GST_FORMAT_TIME, stop_time));
goto pause_task;
}
return;
eos_and_pause:
{
GST_DEBUG_OBJECT (musepackdec, "sending EOS event");
gst_pad_push_event (musepackdec->srcpad, gst_event_new_eos ());
/* fall through to pause */
}
pause_task:
{
GST_DEBUG_OBJECT (musepackdec, "Pausing task");
gst_pad_pause_task (sinkpad);
return;
}
}
static void
gst_musepackdec_loop (GstPad * sinkpad)
{
GstMusepackDec *musepackdec;
GstFlowReturn flow;
GstBuffer *out;
#ifdef MPC_IS_OLD_API
guint32 update_acc, update_bits;
#else
mpc_frame_info frame;
mpc_status err;
#endif
gint num_samples, samplerate, bitspersample;
musepackdec = GST_MUSEPACK_DEC (GST_PAD_PARENT (sinkpad));
samplerate = g_atomic_int_get (&musepackdec->rate);
if (samplerate == 0) {
if (!gst_musepack_stream_init (musepackdec))
goto pause_task;
gst_musepackdec_send_newsegment (musepackdec);
samplerate = g_atomic_int_get (&musepackdec->rate);
}
bitspersample = g_atomic_int_get (&musepackdec->bps);
flow = gst_pad_alloc_buffer_and_set_caps (musepackdec->srcpad, -1,
MPC_DECODER_BUFFER_LENGTH * 4, GST_PAD_CAPS (musepackdec->srcpad), &out);
if (flow != GST_FLOW_OK) {
GST_DEBUG_OBJECT (musepackdec, "Flow: %s", gst_flow_get_name (flow));
goto pause_task;
}
#ifdef MPC_IS_OLD_API
num_samples = mpc_decoder_decode (musepackdec->d,
(MPC_SAMPLE_FORMAT *) GST_BUFFER_DATA (out), &update_acc, &update_bits);
if (num_samples < 0) {
GST_ERROR_OBJECT (musepackdec, "Failed to decode sample");
GST_ELEMENT_ERROR (musepackdec, STREAM, DECODE, (NULL), (NULL));
goto pause_task;
} else if (num_samples == 0) {
goto eos_and_pause;
}
#else
frame.buffer = (MPC_SAMPLE_FORMAT *) GST_BUFFER_DATA (out);
err = mpc_demux_decode (musepackdec->d, &frame);
if (err != MPC_STATUS_OK) {
GST_ERROR_OBJECT (musepackdec, "Failed to decode sample");
GST_ELEMENT_ERROR (musepackdec, STREAM, DECODE, (NULL), (NULL));
goto pause_task;
} else if (frame.bits == -1) {
goto eos_and_pause;
}
num_samples = frame.samples;
#endif
GST_BUFFER_SIZE (out) = num_samples * bitspersample;
GST_BUFFER_OFFSET (out) = musepackdec->segment.last_stop;
GST_BUFFER_TIMESTAMP (out) =
gst_util_uint64_scale_int (musepackdec->segment.last_stop,
GST_SECOND, samplerate);
GST_BUFFER_DURATION (out) =
gst_util_uint64_scale_int (num_samples, GST_SECOND, samplerate);
musepackdec->segment.last_stop += num_samples;
GST_LOG_OBJECT (musepackdec, "Pushing buffer, timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (out)));
flow = gst_pad_push (musepackdec->srcpad, out);
if (flow != GST_FLOW_OK) {
GST_DEBUG_OBJECT (musepackdec, "Flow: %s", gst_flow_get_name (flow));
goto pause_task;
}
/* check if we're at the end of a configured segment */
if (musepackdec->segment.stop != -1 &&
musepackdec->segment.last_stop >= musepackdec->segment.stop) {
gint64 stop_time;
GST_DEBUG_OBJECT (musepackdec, "Reached end of configured segment");
if ((musepackdec->segment.flags & GST_SEEK_FLAG_SEGMENT) == 0)
goto eos_and_pause;
GST_DEBUG_OBJECT (musepackdec, "Posting SEGMENT_DONE message");
stop_time = gst_util_uint64_scale_int (musepackdec->segment.stop,
GST_SECOND, samplerate);
gst_element_post_message (GST_ELEMENT (musepackdec),
gst_message_new_segment_done (GST_OBJECT (musepackdec),
GST_FORMAT_TIME, stop_time));
goto pause_task;
}
return;
eos_and_pause:
{
GST_DEBUG_OBJECT (musepackdec, "sending EOS event");
gst_pad_push_event (musepackdec->srcpad, gst_event_new_eos ());
/* fall through to pause */
}
pause_task:
{
GST_DEBUG_OBJECT (musepackdec, "Pausing task");
gst_pad_pause_task (sinkpad);
return;
}
}