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ext/a52dec/gsta52dec.*: Do something useful with timestamps. Make chain-based (since there's really no reason to be l...
Original commit message from CVS: * ext/a52dec/gsta52dec.c: (gst_a52dec_init), (gst_a52dec_handle_event), (gst_a52dec_update_streaminfo), (gst_a52dec_handle_frame), (gst_a52dec_chain), (gst_a52dec_change_state), (plugin_init): * ext/a52dec/gsta52dec.h: Do something useful with timestamps. Make chain-based (since there's really no reason to be loopbased). * gst/avi/gstavidemux.c: (gst_avi_demux_process_next_entry): Update current_byte/frame correctly.
This commit is contained in:
Ronald S. Bultje
parent
e3f171704d
commit
2e082a9640
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2004-12-06 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* ext/a52dec/gsta52dec.c: (gst_a52dec_init),
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(gst_a52dec_handle_event), (gst_a52dec_update_streaminfo),
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(gst_a52dec_handle_frame), (gst_a52dec_chain),
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(gst_a52dec_change_state), (plugin_init):
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* ext/a52dec/gsta52dec.h:
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Do something useful with timestamps. Make chain-based (since
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there's really no reason to be loopbased).
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* gst/avi/gstavidemux.c: (gst_avi_demux_process_next_entry):
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Update current_byte/frame correctly.
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2004-12-04 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* gst/apetag/apedemux.c: (gst_ape_demux_parse_tags),
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@ -63,10 +63,6 @@ enum
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ARG_DRC
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};
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/*
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* "audio/a52", "audio/x-a52" and "audio/ac3" should not be used (deprecated names)
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* Only use "audio/x-ac3" in new code.
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*/
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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@ -87,7 +83,7 @@ static void gst_a52dec_base_init (gpointer g_class);
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static void gst_a52dec_class_init (GstA52DecClass * klass);
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static void gst_a52dec_init (GstA52Dec * a52dec);
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static void gst_a52dec_loop (GstElement * element);
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static void gst_a52dec_chain (GstPad * pad, GstData * data);
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static GstElementStateReturn gst_a52dec_change_state (GstElement * element);
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static void gst_a52dec_set_property (GObject * object, guint prop_id,
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@ -160,12 +156,14 @@ gst_a52dec_class_init (GstA52DecClass * klass)
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static void
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gst_a52dec_init (GstA52Dec * a52dec)
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{
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GST_FLAG_SET (GST_ELEMENT (a52dec), GST_ELEMENT_EVENT_AWARE);
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/* create the sink and src pads */
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a52dec->sinkpad =
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gst_pad_new_from_template (gst_element_get_pad_template (GST_ELEMENT
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(a52dec), "sink"), "sink");
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gst_pad_set_chain_function (a52dec->sinkpad, gst_a52dec_chain);
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gst_element_add_pad (GST_ELEMENT (a52dec), a52dec->sinkpad);
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gst_element_set_loop_function ((GstElement *) a52dec, gst_a52dec_loop);
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a52dec->srcpad =
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gst_pad_new_from_template (gst_element_get_pad_template (GST_ELEMENT
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@ -173,8 +171,8 @@ gst_a52dec_init (GstA52Dec * a52dec)
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gst_pad_use_explicit_caps (a52dec->srcpad);
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gst_element_add_pad (GST_ELEMENT (a52dec), a52dec->srcpad);
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GST_FLAG_SET (GST_ELEMENT (a52dec), GST_ELEMENT_EVENT_AWARE);
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a52dec->dynamic_range_compression = FALSE;
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a52dec->cache = NULL;
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}
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static int
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@ -289,8 +287,6 @@ gst_a52dec_push (GstPad * srcpad, int flags, sample_t * samples,
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return 0;
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}
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/* END modified a52dec conversion code */
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static gboolean
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gst_a52dec_reneg (GstPad * pad)
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{
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@ -318,28 +314,32 @@ gst_a52dec_reneg (GstPad * pad)
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}
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static void
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gst_a52dec_handle_event (GstA52Dec * a52dec)
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gst_a52dec_handle_event (GstA52Dec * a52dec, GstEvent * event)
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{
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guint32 remaining;
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GstEvent *event;
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gst_bytestream_get_status (a52dec->bs, &remaining, &event);
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if (!event) {
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g_warning ("a52dec: no bytestream event");
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return;
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}
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GST_LOG ("Handling event of type %d timestamp %llu", GST_EVENT_TYPE (event),
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GST_EVENT_TIMESTAMP (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_DISCONTINUOUS:
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case GST_EVENT_DISCONTINUOUS:{
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gint64 val;
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if (!gst_event_discont_get_value (event, GST_FORMAT_TIME, &val)) {
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GST_WARNING ("No time discont value in event %p", event);
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} else {
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a52dec->time = val;
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}
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}
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/* fall-through */
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case GST_EVENT_FLUSH:
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gst_bytestream_flush_fast (a52dec->bs, remaining);
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if (a52dec->cache) {
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gst_buffer_unref (a52dec->cache);
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a52dec->cache = NULL;
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}
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break;
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default:
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break;
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}
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gst_pad_event_default (a52dec->sinkpad, event);
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}
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@ -354,56 +354,18 @@ gst_a52dec_update_streaminfo (GstA52Dec * a52dec)
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GST_TAG_BITRATE, (guint) a52dec->bit_rate, NULL);
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gst_element_found_tags_for_pad (GST_ELEMENT (a52dec),
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GST_PAD (a52dec->srcpad), a52dec->current_ts, taglist);
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GST_PAD (a52dec->srcpad), a52dec->time, taglist);
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}
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static void
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gst_a52dec_loop (GstElement * element)
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static gboolean
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gst_a52dec_handle_frame (GstA52Dec * a52dec, guint8 * data,
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guint length, gint flags, gint sample_rate, gint bit_rate)
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{
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GstA52Dec *a52dec;
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guint8 *data;
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int i, length, flags, sample_rate, bit_rate;
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int channels;
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GstBuffer *buf = NULL;
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guint32 got_bytes;
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gboolean need_reneg;
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GstClockTime timestamp = 0;
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a52dec = GST_A52DEC (element);
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/* find and read header */
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bit_rate = a52dec->bit_rate;
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sample_rate = a52dec->sample_rate;
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flags = 0;
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do {
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gint skipped_bytes = 0;
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while (skipped_bytes < 3840) {
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got_bytes = gst_bytestream_peek_bytes (a52dec->bs, &data, 7);
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if (got_bytes < 7) {
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gst_a52dec_handle_event (a52dec);
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return;
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}
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length = a52_syncinfo (data, &flags, &sample_rate, &bit_rate);
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if (length == 0) {
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/* slide window to next 7 bytesa */
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gst_bytestream_flush_fast (a52dec->bs, 1);
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skipped_bytes++;
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GST_DEBUG ("Skipped");
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} else {
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GST_DEBUG ("Sync: %d", length);
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break;
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}
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}
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if (skipped_bytes >= 3840) {
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GST_LOG ("Sync failed");
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return;
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}
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}
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while (0);
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gint channels, i;
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gboolean need_reneg = FALSE;
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/* update stream information, renegotiate or re-streaminfo if needed */
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need_reneg = FALSE;
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if (a52dec->sample_rate != sample_rate) {
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need_reneg = TRUE;
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a52dec->sample_rate = sample_rate;
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@ -418,69 +380,109 @@ gst_a52dec_loop (GstElement * element)
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gst_a52dec_update_streaminfo (a52dec);
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}
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/* read the header + rest of frame */
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got_bytes = gst_bytestream_read (a52dec->bs, &buf, length);
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if (got_bytes < length) {
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gst_a52dec_handle_event (a52dec);
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return;
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}
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data = GST_BUFFER_DATA (buf);
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timestamp = gst_bytestream_get_timestamp (a52dec->bs);
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if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
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if (timestamp == a52dec->last_ts) {
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timestamp = a52dec->current_ts;
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} else {
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a52dec->last_ts = timestamp;
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}
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}
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/* process */
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flags = a52dec->request_channels; /* | A52_ADJUST_LEVEL; */
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a52dec->level = 1;
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if (a52_frame (a52dec->state, data, &flags, &a52dec->level, a52dec->bias)) {
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GST_WARNING ("a52_frame error");
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goto end;
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return TRUE;
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}
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channels = flags & (A52_CHANNEL_MASK | A52_LFE);
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if (a52dec->using_channels != channels) {
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need_reneg = TRUE;
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a52dec->using_channels = channels;
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}
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/* negotiate if required */
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if (need_reneg == TRUE) {
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GST_DEBUG ("a52dec reneg: sample_rate:%d stream_chans:%d using_chans:%d\n",
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a52dec->sample_rate, a52dec->stream_channels, a52dec->using_channels);
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if (!gst_a52dec_reneg (a52dec->srcpad))
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goto end;
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if (!gst_a52dec_reneg (a52dec->srcpad)) {
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GST_ELEMENT_ERROR (a52dec, CORE, NEGOTIATION, (NULL), (NULL));
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return FALSE;
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}
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}
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if (a52dec->dynamic_range_compression == FALSE) {
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a52_dynrng (a52dec->state, NULL, NULL);
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}
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/* each frame consists of 6 blocks */
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for (i = 0; i < 6; i++) {
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if (a52_block (a52dec->state)) {
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GST_WARNING ("a52_block error %d", i);
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continue;
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}
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/* push on */
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if (gst_a52dec_push (a52dec->srcpad, a52dec->using_channels,
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a52dec->samples, timestamp)) {
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GST_WARNING ("a52dec push error");
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} else {
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/* push on */
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gst_a52dec_push (a52dec->srcpad, a52dec->using_channels,
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a52dec->samples, a52dec->time);
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}
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a52dec->time += 256 * GST_SECOND / a52dec->sample_rate;
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}
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if (i % 2)
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timestamp += 256 * GST_SECOND / a52dec->sample_rate;
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return TRUE;
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}
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static void
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gst_a52dec_chain (GstPad * pad, GstData * _data)
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{
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GstA52Dec *a52dec = GST_A52DEC (gst_pad_get_parent (pad));
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GstBuffer *buf;
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guint8 *data;
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guint size;
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gint length = 0, flags, sample_rate, bit_rate;
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/* event handling */
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if (GST_IS_EVENT (_data)) {
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gst_a52dec_handle_event (a52dec, GST_EVENT (_data));
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return;
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}
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/* merge with cache, if any. Also make sure timestamps match */
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buf = GST_BUFFER (_data);
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if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
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a52dec->time = GST_BUFFER_TIMESTAMP (buf);
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}
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if (a52dec->cache) {
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buf = gst_buffer_join (a52dec->cache, buf);
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a52dec->cache = NULL;
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}
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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/* find and read header */
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bit_rate = a52dec->bit_rate;
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sample_rate = a52dec->sample_rate;
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flags = 0;
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while (size >= 7) {
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length = a52_syncinfo (data, &flags, &sample_rate, &bit_rate);
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if (length == 0) {
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/* no sync */
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data++;
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size--;
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} else if (length <= size) {
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GST_DEBUG ("Sync: %d", length);
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if (!gst_a52dec_handle_frame (a52dec, data,
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length, flags, sample_rate, bit_rate)) {
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size = 0;
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break;
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}
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size -= length;
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data += length;
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} else {
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/* not enough data */
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GST_LOG ("Not enough data available");
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break;
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}
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}
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a52dec->current_ts = timestamp;
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end:
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/* keep cache */
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if (length == 0) {
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GST_LOG ("No sync found");
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}
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if (size > 0) {
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a52dec->cache = gst_buffer_create_sub (buf,
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GST_BUFFER_SIZE (buf) - size, size);
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}
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gst_buffer_unref (buf);
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}
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@ -493,7 +495,6 @@ gst_a52dec_change_state (GstElement * element)
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switch (GST_STATE_TRANSITION (element)) {
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case GST_STATE_NULL_TO_READY:
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a52dec->bs = gst_bytestream_new (a52dec->sinkpad);
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cpuflags = gst_cpu_get_flags ();
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if (cpuflags & GST_CPU_FLAG_MMX)
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a52_cpuflags |= MM_ACCEL_X86_MMX;
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@ -513,20 +514,18 @@ gst_a52dec_change_state (GstElement * element)
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a52dec->using_channels = A52_CHANNEL;
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a52dec->level = 1;
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a52dec->bias = 0;
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a52dec->last_ts = 0;
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a52dec->current_ts = 0;
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a52dec->last_timestamp = 0;
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a52dec->last_diff = 0;
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a52dec->time = 0;
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break;
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case GST_STATE_PAUSED_TO_PLAYING:
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break;
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case GST_STATE_PLAYING_TO_PAUSED:
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break;
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case GST_STATE_PAUSED_TO_READY:
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gst_bytestream_destroy (a52dec->bs);
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a52dec->bs = NULL;
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a52dec->samples = NULL;
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if (a52dec->cache) {
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gst_buffer_unref (a52dec->cache);
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a52dec->cache = NULL;
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}
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break;
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case GST_STATE_READY_TO_NULL:
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a52_free (a52dec->state);
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@ -586,7 +585,7 @@ static gboolean
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plugin_init (GstPlugin * plugin)
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{
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if (!gst_library_load ("gstbytestream") || !gst_library_load ("gstaudio"))
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if (!gst_library_load ("gstaudio"))
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return FALSE;
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if (!gst_element_register (plugin, "a52dec", GST_RANK_PRIMARY,
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@ -58,13 +58,8 @@ struct _GstA52Dec {
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sample_t *samples;
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a52_state_t *state;
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GstByteStream *bs;
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GstClockTime last_ts;
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GstClockTime current_ts;
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GstClockTime last_timestamp;
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GstClockTimeDiff last_diff;
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GstBuffer *cache;
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GstClockTime time;
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};
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struct _GstA52DecClass {
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