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-rw-r--r--ChangeLog9
-rw-r--r--ext/dts/gstdtsdec.c262
-rw-r--r--ext/dts/gstdtsdec.h6
3 files changed, 160 insertions, 117 deletions
diff --git a/ChangeLog b/ChangeLog
index 14ca0d42..e9b2f5a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2005-02-10 Jan Schmidt <thaytan@mad.scientist.com>
+
+ * ext/dts/gstdtsdec.c: (gst_dtsdec_init), (gst_dtsdec_channels),
+ (gst_dtsdec_handle_event), (gst_dtsdec_handle_frame),
+ (gst_dtsdec_chain), (gst_dtsdec_change_state):
+ * ext/dts/gstdtsdec.h:
+ Don't clobber the stack constructing the channels array.
+ Make the element chain-based. DTS tracks can now be played.
+
2005-02-09 Tim-Philipp Müller <tim at centricular dot net>
* gst-libs/gst/audio/multichannel.h:
diff --git a/ext/dts/gstdtsdec.c b/ext/dts/gstdtsdec.c
index edcc8bcc..fa7fd5d9 100644
--- a/ext/dts/gstdtsdec.c
+++ b/ext/dts/gstdtsdec.c
@@ -84,7 +84,7 @@ static void gst_dtsdec_base_init (GstDtsDecClass * klass);
static void gst_dtsdec_class_init (GstDtsDecClass * klass);
static void gst_dtsdec_init (GstDtsDec * dtsdec);
-static void gst_dtsdec_loop (GstElement * element);
+static void gst_dtsdec_chain (GstPad * pad, GstData * data);
static GstElementStateReturn gst_dtsdec_change_state (GstElement * element);
static void gst_dtsdec_set_property (GObject * object, guint prop_id,
@@ -168,8 +168,8 @@ gst_dtsdec_init (GstDtsDec * dtsdec)
dtsdec->sinkpad =
gst_pad_new_from_template (gst_element_get_pad_template (GST_ELEMENT
(dtsdec), "sink"), "sink");
+ gst_pad_set_chain_function (dtsdec->sinkpad, gst_dtsdec_chain);
gst_element_add_pad (element, dtsdec->sinkpad);
- gst_element_set_loop_function (element, gst_dtsdec_loop);
dtsdec->srcpad =
gst_pad_new_from_template (gst_element_get_pad_template (element,
@@ -185,14 +185,20 @@ static gint
gst_dtsdec_channels (uint32_t flags, GstAudioChannelPosition ** pos)
{
gint chans = 0;
+ GstAudioChannelPosition *tpos = NULL;
+
+ if (pos) {
+ /* Allocate the maximum, for ease */
+ tpos = *pos = g_new (GstAudioChannelPosition, 7);
+ if (!tpos)
+ return 0;
+ }
switch (flags & DTS_CHANNEL_MASK) {
case DTS_MONO:
chans = 1;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 2);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
- }
+ if (tpos)
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
break;
/* case DTS_CHANNEL: */
case DTS_STEREO:
@@ -200,71 +206,64 @@ gst_dtsdec_channels (uint32_t flags, GstAudioChannelPosition ** pos)
case DTS_STEREO_TOTAL:
case DTS_DOLBY:
chans = 2;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 3);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
}
break;
case DTS_3F:
chans = 3;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 4);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
}
break;
case DTS_2F1R:
chans = 3;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 4);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
- *pos[2] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ tpos[2] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
}
break;
case DTS_3F1R:
chans = 4;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 5);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
- *pos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ tpos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
}
break;
case DTS_2F2R:
chans = 4;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 5);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
- *pos[2] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
- *pos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ tpos[2] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
+ tpos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
}
break;
case DTS_3F2R:
chans = 5;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 6);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
- *pos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
- *pos[4] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ tpos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
+ tpos[4] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
}
break;
case DTS_4F2R:
chans = 6;
- if (pos) {
- *pos = g_new (GstAudioChannelPosition, 7);
- *pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
- *pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
- *pos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
- *pos[3] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
- *pos[4] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
- *pos[5] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
+ if (tpos) {
+ tpos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
+ tpos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
+ tpos[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
+ tpos[3] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
+ tpos[4] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
+ tpos[5] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
}
break;
default:
@@ -273,8 +272,8 @@ gst_dtsdec_channels (uint32_t flags, GstAudioChannelPosition ** pos)
return 0;
}
if (flags & DTS_LFE) {
- if (pos) {
- *pos[chans] = GST_AUDIO_CHANNEL_POSITION_LFE;
+ if (tpos) {
+ tpos[chans] = GST_AUDIO_CHANNEL_POSITION_LFE;
}
chans += 1;
}
@@ -305,13 +304,8 @@ gst_dtsdec_renegotiate (GstDtsDec * dts)
}
static void
-gst_dtsdec_handle_event (GstDtsDec * dts)
+gst_dtsdec_handle_event (GstDtsDec * dts, GstEvent * event)
{
- guint32 remaining;
- GstEvent *event;
-
- gst_bytestream_get_status (dts->bs, &remaining, &event);
-
if (!event) {
GST_ELEMENT_ERROR (dts, RESOURCE, READ, (NULL), (NULL));
return;
@@ -322,8 +316,22 @@ gst_dtsdec_handle_event (GstDtsDec * dts)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
+ {
+ gint64 val;
+
+ if (!gst_event_discont_get_value (event, GST_FORMAT_TIME, &val) ||
+ !GST_CLOCK_TIME_IS_VALID (val)) {
+ GST_WARNING ("No time discont value in event %p", event);
+ } else {
+ dts->current_ts = val;
+ }
+ }
+ /* Fallthrough */
case GST_EVENT_FLUSH:
- gst_bytestream_flush_fast (dts->bs, remaining);
+ if (dts->cache) {
+ gst_buffer_unref (dts->cache);
+ dts->cache = NULL;
+ }
break;
default:
break;
@@ -346,42 +354,16 @@ gst_dtsdec_update_streaminfo (GstDtsDec * dts)
dts->srcpad, dts->current_ts, taglist);
}
-static void
-gst_dtsdec_loop (GstElement * element)
+static gboolean
+gst_dtsdec_handle_frame (GstDtsDec * dts, guint8 * data,
+ guint length, gint flags, gint sample_rate, gint bit_rate)
{
- GstDtsDec *dts = GST_DTSDEC (element);
- guint8 *data;
- GstBuffer *buf, *out;
- sample_t *samples;
- gint i, length, flags, sample_rate, bit_rate, frame_length, s, c, num_c;
- gint channels, skipped = 0, num_blocks;
- guint32 got_bytes;
gboolean need_renegotiation = FALSE;
GstClockTime timestamp = 0;
-
- /* find sync. Don't know what 3840 is based on... */
-#define MAX_SKIP 3840
- while (skipped < MAX_SKIP) {
- got_bytes = gst_bytestream_peek_bytes (dts->bs, &data, 7);
- if (got_bytes < 7) {
- gst_dtsdec_handle_event (dts);
- return;
- }
- length = dts_syncinfo (dts->state, data, &flags,
- &sample_rate, &bit_rate, &frame_length);
- if (length == 0) {
- /* shift window to re-find sync */
- gst_bytestream_flush_fast (dts->bs, 1);
- skipped++;
- GST_LOG ("Skipped");
- } else
- break;
- }
-
- if (skipped >= MAX_SKIP) {
- GST_ELEMENT_ERROR (dts, RESOURCE, SYNC, (NULL), (NULL));
- return;
- }
+ gint channels, num_blocks;
+ GstBuffer *out;
+ gint i, s, c, num_c;
+ sample_t *samples;
/* go over stream properties, update caps/streaminfo if needed */
if (dts->sample_rate != sample_rate) {
@@ -396,30 +378,13 @@ gst_dtsdec_loop (GstElement * element)
gst_dtsdec_update_streaminfo (dts);
}
- /* read the header + rest of frame */
- got_bytes = gst_bytestream_read (dts->bs, &buf, length);
- if (got_bytes < length) {
- gst_dtsdec_handle_event (dts);
- return;
- }
-
- data = GST_BUFFER_DATA (buf);
- timestamp = gst_bytestream_get_timestamp (dts->bs);
- if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
- if (timestamp == dts->last_ts) {
- timestamp = dts->current_ts;
- } else {
- dts->last_ts = timestamp;
- }
- }
-
/* process */
flags = dts->request_channels | DTS_ADJUST_LEVEL;
dts->level = 1;
if (dts_frame (dts->state, data, &flags, &dts->level, dts->bias)) {
GST_WARNING ("dts_frame error");
- goto end;
+ return FALSE;
}
channels = flags & (DTS_CHANNEL_MASK | DTS_LFE);
@@ -433,7 +398,7 @@ gst_dtsdec_loop (GstElement * element)
GST_DEBUG ("dtsdec: sample_rate:%d stream_chans:0x%x using_chans:0x%x",
dts->sample_rate, dts->stream_channels, dts->using_channels);
if (!gst_dtsdec_renegotiate (dts))
- goto end;
+ return FALSE;
}
if (dts->dynamic_range_compression == FALSE) {
@@ -451,6 +416,11 @@ gst_dtsdec_loop (GstElement * element)
samples = dts_samples (dts->state);
num_c = gst_dtsdec_channels (dts->using_channels, NULL);
out = gst_buffer_new_and_alloc ((SAMPLE_WIDTH / 8) * 256 * num_c);
+ if (!out) {
+ GST_ELEMENT_ERROR (dts, RESOURCE, FAILED, (NULL), ("Out of memory"));
+ return FALSE;
+ }
+
GST_BUFFER_TIMESTAMP (out) = timestamp;
GST_BUFFER_DURATION (out) = GST_SECOND * 256 / dts->sample_rate;
@@ -466,13 +436,81 @@ gst_dtsdec_loop (GstElement * element)
/* push on */
gst_pad_push (dts->srcpad, GST_DATA (out));
-
timestamp += GST_SECOND * 256 / dts->sample_rate;
}
dts->current_ts = timestamp;
+ return TRUE;
+}
+
+static void
+gst_dtsdec_chain (GstPad * pad, GstData * _data)
+{
+ GstDtsDec *dts;
+ guint8 *data;
+ gint64 size;
+ GstBuffer *buf;
+ gint length, flags, sample_rate, bit_rate, frame_length;
+
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (_data != NULL);
+
+ dts = GST_DTSDEC (gst_pad_get_parent (pad));
+
+ if (GST_IS_EVENT (_data)) {
+ gst_dtsdec_handle_event (dts, GST_EVENT (_data));
+ return;
+ }
+
+ /* merge with cache, if any. Also make sure timestamps match */
+ buf = GST_BUFFER (_data);
+ if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+ dts->current_ts = GST_BUFFER_TIMESTAMP (buf);
+ GST_DEBUG_OBJECT (dts, "Received buffer with ts %" GST_TIME_FORMAT
+ " duration %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
+ GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
+ }
+
+ if (dts->cache) {
+ buf = gst_buffer_join (dts->cache, buf);
+ dts->cache = NULL;
+ }
+
+ data = GST_BUFFER_DATA (buf);
+ size = GST_BUFFER_SIZE (buf);
+ length = 0;
+ while (size >= 7) {
+ length = dts_syncinfo (dts->state, data, &flags,
+ &sample_rate, &bit_rate, &frame_length);
+ if (length == 0) {
+ /* shift window to re-find sync */
+ data++;
+ size--;
+ } else if (length <= size) {
+ GST_DEBUG ("Sync: frame size %d", length);
+ if (!gst_dtsdec_handle_frame (dts, data,
+ length, flags, sample_rate, bit_rate)) {
+ size = 0;
+ break;
+ }
+ size -= length;
+ data += length;
+ } else {
+ GST_LOG ("Not enough data available (needed %d had %d)", length, size);
+ break;
+ }
+ }
+
+ /* keep cache */
+ if (length == 0) {
+ GST_LOG ("No sync found");
+ }
+ if (size > 0) {
+ dts->cache = gst_buffer_create_sub (buf,
+ GST_BUFFER_SIZE (buf) - size, size);
+ }
-end:
gst_buffer_unref (buf);
}
@@ -486,7 +524,6 @@ gst_dtsdec_change_state (GstElement * element)
GstCPUFlags cpuflags;
uint32_t mm_accel = 0;
- dts->bs = gst_bytestream_new (dts->sinkpad);
cpuflags = gst_cpu_get_flags ();
if (cpuflags & GST_CPU_FLAG_MMX)
mm_accel |= MM_ACCEL_X86_MMX;
@@ -508,15 +545,12 @@ gst_dtsdec_change_state (GstElement * element)
dts->using_channels = 0;
dts->level = 1;
dts->bias = 0;
- dts->last_ts = 0;
dts->current_ts = 0;
break;
case GST_STATE_PAUSED_TO_READY:
dts->samples = NULL;
break;
case GST_STATE_READY_TO_NULL:
- gst_bytestream_destroy (dts->bs);
- dts->bs = NULL;
dts_free (dts->state);
dts->state = NULL;
break;
diff --git a/ext/dts/gstdtsdec.h b/ext/dts/gstdtsdec.h
index 86ebec23..04b7f687 100644
--- a/ext/dts/gstdtsdec.h
+++ b/ext/dts/gstdtsdec.h
@@ -61,10 +61,10 @@ struct _GstDtsDec {
sample_t *samples;
dts_state_t *state;
- GstByteStream *bs;
-
+ /* Data left over from the previous buffer */
+ GstBuffer *cache;
+
/* keep track of time */
- GstClockTime last_ts;
GstClockTime current_ts;
};
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-26 07:35:44 +0000