mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 03:01:03 +00:00
dvdlpcmdec: rewrite to use GstAudioDecoder
https://bugzilla.gnome.org/show_bug.cgi?id=765807
This commit is contained in:
Michael Olbrich
Sebastian Dröge
parent
9b6b6d1fd5
commit
35dc8d0f68
2 changed files with 189 additions and 335 deletions
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@ -56,65 +56,31 @@ GST_STATIC_PAD_TEMPLATE ("src",
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"channels = (int) [ 1, 8 ]")
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);
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/* DvdLpcmDec signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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#define gst_dvdlpcmdec_parent_class parent_class
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G_DEFINE_TYPE (GstDvdLpcmDec, gst_dvdlpcmdec, GST_TYPE_AUDIO_DECODER);
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enum
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{
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PROP_0
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/* FILL ME */
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};
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static void gst_dvdlpcmdec_base_init (gpointer g_class);
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static void gst_dvdlpcmdec_class_init (GstDvdLpcmDecClass * klass);
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static void gst_dvdlpcmdec_init (GstDvdLpcmDec * dvdlpcmdec);
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static GstFlowReturn gst_dvdlpcmdec_chain_raw (GstPad * pad, GstObject * parent,
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static gboolean gst_dvdlpcmdec_set_format (GstAudioDecoder * bdec,
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GstCaps * caps);
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static GstFlowReturn gst_dvdlpcmdec_parse (GstAudioDecoder * bdec,
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GstAdapter * adapter, gint * offset, gint * len);
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static GstFlowReturn gst_dvdlpcmdec_handle_frame (GstAudioDecoder * bdec,
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GstBuffer * buffer);
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static GstFlowReturn gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstObject * parent,
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static GstFlowReturn gst_dvdlpcmdec_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static gboolean gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean dvdlpcmdec_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static GstStateChangeReturn gst_dvdlpcmdec_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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GType
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gst_dvdlpcmdec_get_type (void)
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{
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static GType dvdlpcmdec_type = 0;
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if (!dvdlpcmdec_type) {
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static const GTypeInfo dvdlpcmdec_info = {
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sizeof (GstDvdLpcmDecClass),
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gst_dvdlpcmdec_base_init,
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NULL,
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(GClassInitFunc) gst_dvdlpcmdec_class_init,
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NULL,
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NULL,
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sizeof (GstDvdLpcmDec),
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0,
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(GInstanceInitFunc) gst_dvdlpcmdec_init,
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};
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dvdlpcmdec_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstDvdLpcmDec",
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&dvdlpcmdec_info, 0);
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}
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return dvdlpcmdec_type;
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}
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static void
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gst_dvdlpcmdec_base_init (gpointer g_class)
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gst_dvdlpcmdec_class_init (GstDvdLpcmDecClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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GstElementClass *element_class;
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GstAudioDecoderClass *gstbase_class;
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element_class = (GstElementClass *) klass;
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gstbase_class = (GstAudioDecoderClass *) klass;
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gstbase_class->set_format = GST_DEBUG_FUNCPTR (gst_dvdlpcmdec_set_format);
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gstbase_class->parse = GST_DEBUG_FUNCPTR (gst_dvdlpcmdec_parse);
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gstbase_class->handle_frame = GST_DEBUG_FUNCPTR (gst_dvdlpcmdec_handle_frame);
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gst_element_class_add_static_pad_template (element_class,
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&gst_dvdlpcmdec_sink_template);
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@ -124,18 +90,8 @@ gst_dvdlpcmdec_base_init (gpointer g_class)
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"DVD LPCM Audio decoder", "Codec/Decoder/Audio",
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"Decode DVD LPCM frames into standard PCM audio",
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"Jan Schmidt <jan@noraisin.net>, Michael Smith <msmith@fluendo.com>");
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}
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static void
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gst_dvdlpcmdec_class_init (GstDvdLpcmDecClass * klass)
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{
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GstElementClass *gstelement_class;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gstelement_class->change_state = gst_dvdlpcmdec_change_state;
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GST_DEBUG_CATEGORY_INIT (dvdlpcm_debug, "dvdlpcmdec", 0, "DVD LPCM Decoder");
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}
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static void
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@ -145,27 +101,28 @@ gst_dvdlpcm_reset (GstDvdLpcmDec * dvdlpcmdec)
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dvdlpcmdec->dynamic_range = 0;
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dvdlpcmdec->emphasis = FALSE;
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dvdlpcmdec->mute = FALSE;
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dvdlpcmdec->timestamp = GST_CLOCK_TIME_NONE;
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dvdlpcmdec->header = 0;
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gst_segment_init (&dvdlpcmdec->segment, GST_FORMAT_UNDEFINED);
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dvdlpcmdec->mode = GST_LPCM_UNKNOWN;
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}
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static void
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gst_dvdlpcmdec_init (GstDvdLpcmDec * dvdlpcmdec)
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{
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dvdlpcmdec->sinkpad =
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gst_pad_new_from_static_template (&gst_dvdlpcmdec_sink_template, "sink");
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gst_pad_set_event_function (dvdlpcmdec->sinkpad, dvdlpcmdec_sink_event);
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gst_element_add_pad (GST_ELEMENT (dvdlpcmdec), dvdlpcmdec->sinkpad);
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dvdlpcmdec->srcpad =
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gst_pad_new_from_static_template (&gst_dvdlpcmdec_src_template, "src");
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gst_pad_use_fixed_caps (dvdlpcmdec->srcpad);
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gst_element_add_pad (GST_ELEMENT (dvdlpcmdec), dvdlpcmdec->srcpad);
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gst_dvdlpcm_reset (dvdlpcmdec);
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gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
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(dvdlpcmdec), TRUE);
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GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dvdlpcmdec));
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/* retrieve and intercept base class chain.
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* Quite HACKish, but that's dvd specs/caps for you,
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* since one buffer needs to be split into 2 frames */
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dvdlpcmdec->base_chain =
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GST_PAD_CHAINFUNC (GST_AUDIO_DECODER_SINK_PAD (dvdlpcmdec));
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gst_pad_set_chain_function (GST_AUDIO_DECODER_SINK_PAD (dvdlpcmdec),
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GST_DEBUG_FUNCPTR (gst_dvdlpcmdec_chain));
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}
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static const GstAudioChannelPosition channel_positions[][8] = {
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@ -209,31 +166,26 @@ gst_dvdlpcmdec_send_tags (GstDvdLpcmDec * dvdlpcmdec)
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taglist = gst_tag_list_new (GST_TAG_AUDIO_CODEC, "LPCM Audio",
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GST_TAG_BITRATE, bitrate, NULL);
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gst_pad_push_event (dvdlpcmdec->srcpad, gst_event_new_tag (taglist));
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gst_audio_decoder_merge_tags (GST_AUDIO_DECODER (dvdlpcmdec), taglist,
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GST_TAG_MERGE_REPLACE);
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gst_tag_list_unref (taglist);
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}
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static gboolean
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gst_dvdlpcmdec_set_outcaps (GstDvdLpcmDec * dvdlpcmdec)
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gst_dvdlpcmdec_set_output_format (GstDvdLpcmDec * dvdlpcmdec)
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{
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gboolean res = TRUE;
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GstCaps *src_caps;
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/* Build caps to set on the src pad, which we know from the incoming caps */
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src_caps = gst_audio_info_to_caps (&dvdlpcmdec->info);
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res = gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps);
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res = gst_audio_decoder_set_output_format (GST_AUDIO_DECODER (dvdlpcmdec),
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&dvdlpcmdec->info);
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if (res) {
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GST_DEBUG_OBJECT (dvdlpcmdec, "Successfully set output caps: %"
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GST_PTR_FORMAT, src_caps);
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GST_DEBUG_OBJECT (dvdlpcmdec, "Successfully set output format");
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gst_dvdlpcmdec_send_tags (dvdlpcmdec);
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} else {
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GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set output caps: %"
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GST_PTR_FORMAT, src_caps);
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GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set output format");
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}
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gst_caps_unref (src_caps);
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return res;
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}
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@ -253,41 +205,42 @@ gst_dvdlpcmdec_update_audio_formats (GstDvdLpcmDec * dec, gint channels,
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guint c;
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position = channel_positions[channels - 1];
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dec->lpcm_layout = position;
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for (c = 0; c < channels; ++c)
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sorted_position[c] = position[c];
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gst_audio_channel_positions_to_valid_order (sorted_position, channels);
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gst_audio_info_set_format (&dec->info, format, rate, channels,
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sorted_position);
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if (memcmp (position, sorted_position,
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channels * sizeof (position[0])) != 0)
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dec->lpcm_layout = position;
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else
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dec->lpcm_layout = NULL;
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} else {
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gst_audio_info_set_format (&dec->info, format, rate, channels, NULL);
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}
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}
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static gboolean
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gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
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gst_dvdlpcmdec_set_format (GstAudioDecoder * bdec, GstCaps * caps)
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{
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GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (bdec);
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GstStructure *structure;
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gboolean res = TRUE;
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GstDvdLpcmDec *dvdlpcmdec;
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GstAudioFormat format;
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gint rate, channels, width;
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g_return_val_if_fail (caps != NULL, FALSE);
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g_return_val_if_fail (pad != NULL, FALSE);
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dvdlpcmdec = GST_DVDLPCMDEC (gst_pad_get_parent (pad));
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gst_dvdlpcm_reset (dvdlpcmdec);
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structure = gst_caps_get_structure (caps, 0);
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/* If we have the DVD structured LPCM (including header) then we wait
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* for incoming data before creating the output pad caps */
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if (gst_structure_has_name (structure, "audio/x-private1-lpcm")) {
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gst_pad_set_chain_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_chain_dvd);
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dvdlpcmdec->mode = GST_LPCM_DVD;
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goto done;
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}
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gst_pad_set_chain_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_chain_raw);
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dvdlpcmdec->mode = GST_LPCM_RAW;
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res &= gst_structure_get_int (structure, "rate", &rate);
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res &= gst_structure_get_int (structure, "channels", &channels);
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@ -318,59 +271,19 @@ gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
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dvdlpcmdec->width = width;
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res = gst_dvdlpcmdec_set_outcaps (dvdlpcmdec);
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res = gst_dvdlpcmdec_set_output_format (dvdlpcmdec);
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done:
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gst_object_unref (dvdlpcmdec);
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return res;
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/* ERRORS */
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caps_parse_error:
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{
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GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't get parameters; missing caps?");
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gst_object_unref (dvdlpcmdec);
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return FALSE;
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}
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}
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static void
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update_timestamps (GstDvdLpcmDec * dvdlpcmdec, GstBuffer * buf, int samples)
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{
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gboolean take_buf_ts = FALSE;
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gint rate;
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rate = GST_AUDIO_INFO_RATE (&dvdlpcmdec->info);
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GST_BUFFER_DURATION (buf) = gst_util_uint64_scale (samples, GST_SECOND, rate);
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if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
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if (GST_CLOCK_TIME_IS_VALID (dvdlpcmdec->timestamp)) {
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GstClockTimeDiff one_sample = GST_SECOND / rate;
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GstClockTimeDiff diff = GST_CLOCK_DIFF (GST_BUFFER_TIMESTAMP (buf),
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dvdlpcmdec->timestamp);
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if (diff > one_sample || diff < -one_sample)
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take_buf_ts = TRUE;
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} else {
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take_buf_ts = TRUE;
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}
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} else if (!GST_CLOCK_TIME_IS_VALID (dvdlpcmdec->timestamp)) {
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dvdlpcmdec->timestamp = 0;
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}
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if (take_buf_ts) {
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/* Take buffer timestamp */
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dvdlpcmdec->timestamp = GST_BUFFER_TIMESTAMP (buf);
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} else {
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GST_BUFFER_TIMESTAMP (buf) = dvdlpcmdec->timestamp;
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}
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dvdlpcmdec->timestamp += GST_BUFFER_DURATION (buf);
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GST_LOG_OBJECT (dvdlpcmdec, "Updated timestamp to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
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}
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static void
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parse_header (GstDvdLpcmDec * dec, guint32 header)
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{
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@ -430,73 +343,40 @@ parse_header (GstDvdLpcmDec * dec, guint32 header)
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}
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static GstFlowReturn
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gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstObject * parent, GstBuffer * buf)
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gst_dvdlpcmdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
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{
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GstDvdLpcmDec *dvdlpcmdec;
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GstMapInfo map;
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guint8 *data;
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GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (parent);
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guint8 data[2];
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gsize size;
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guint first_access;
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guint32 header;
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GstBuffer *subbuf;
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GstFlowReturn ret = GST_FLOW_OK;
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gint off, len;
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gint rate, channels;
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dvdlpcmdec = GST_DVDLPCMDEC (parent);
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gst_buffer_map (buf, &map, GST_MAP_READ);
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data = map.data;
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size = map.size;
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if (dvdlpcmdec->mode != GST_LPCM_DVD)
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return dvdlpcmdec->base_chain (pad, parent, buf);
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size = gst_buffer_get_size (buf);
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if (size < 5)
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goto too_small;
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/* We have a 5 byte header, now.
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* The first two bytes are a (big endian) 16 bit offset into our buffer.
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* The buffer timestamp refers to this offset.
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*
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* The other three bytes are a (big endian) number in which the header is
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* encoded.
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*/
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gst_buffer_extract (buf, 0, data, 2);
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first_access = (data[0] << 8) | data[1];
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if (first_access > size)
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goto invalid_data;
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/* Don't keep the 'frame number' low 5 bits of the first byte */
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header = ((data[2] & 0xC0) << 16) | (data[3] << 8) | data[4];
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/* see if we have a new header */
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if (header != dvdlpcmdec->header) {
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parse_header (dvdlpcmdec, header);
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if (!gst_dvdlpcmdec_set_outcaps (dvdlpcmdec))
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goto negotiation_failed;
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dvdlpcmdec->header = header;
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}
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GST_LOG_OBJECT (dvdlpcmdec, "first_access %d, buffer length %" G_GSIZE_FORMAT,
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first_access, size);
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rate = GST_AUDIO_INFO_RATE (&dvdlpcmdec->info);
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channels = GST_AUDIO_INFO_CHANNELS (&dvdlpcmdec->info);
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/* After first_access, we have an additional 3 bytes of data we've parsed and
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* don't want to handle; this is included within the value of first_access.
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/* After first_access, we have an additional 3 bytes of header data; this
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* is included within the value of first_access.
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* So a first_access value of between 1 and 3 is just broken, we treat that
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* the same as zero. first_access == 4 means we only need to create a single
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* sub-buffer, greater than that we need to create two. */
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/* skip access unit bytes and info */
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off = 5;
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/* skip access unit bytes */
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off = 2;
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if (first_access > 4) {
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guint samples = 0;
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GstClockTime ts;
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/* length of first buffer */
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len = first_access - 4;
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len = first_access - 1;
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GST_LOG_OBJECT (dvdlpcmdec, "Creating first sub-buffer off %d, len %d",
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off, len);
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@ -506,36 +386,8 @@ gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstObject * parent, GstBuffer * buf)
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goto bad_first_access;
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subbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, off, len);
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/* If we don't have a stored timestamp from the last packet,
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* (it's straight after a new-segment, but we have one on the
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* first access buffer, then calculate the timestamp to align
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* this buffer to just before the first_access buffer */
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if (!GST_CLOCK_TIME_IS_VALID (dvdlpcmdec->timestamp) &&
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GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
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switch (dvdlpcmdec->width) {
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case 16:
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samples = len / channels / 2;
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break;
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case 20:
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samples = (len / channels) * 2 / 5;
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break;
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case 24:
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samples = len / channels / 3;
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break;
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}
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}
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if (samples != 0) {
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ts = gst_util_uint64_scale (samples, GST_SECOND, rate);
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if (ts < GST_BUFFER_TIMESTAMP (buf))
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GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf) - ts;
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else
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GST_BUFFER_TIMESTAMP (subbuf) = 0;
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} else {
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GST_BUFFER_TIMESTAMP (subbuf) = GST_CLOCK_TIME_NONE;
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}
|
||||
|
||||
ret = gst_dvdlpcmdec_chain_raw (pad, parent, subbuf);
|
||||
GST_BUFFER_TIMESTAMP (subbuf) = GST_CLOCK_TIME_NONE;
|
||||
ret = dvdlpcmdec->base_chain (pad, parent, subbuf);
|
||||
if (ret != GST_FLOW_OK)
|
||||
goto done;
|
||||
|
||||
|
|
@ -547,10 +399,14 @@ gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|||
len);
|
||||
|
||||
if (len > 0) {
|
||||
GstMemory *header, *tmp;
|
||||
subbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, off, len);
|
||||
tmp = gst_buffer_peek_memory (buf, 0);
|
||||
header = gst_memory_copy (tmp, 2, 3);
|
||||
gst_buffer_prepend_memory (subbuf, header);
|
||||
GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
|
||||
|
||||
ret = gst_dvdlpcmdec_chain_raw (pad, parent, subbuf);
|
||||
ret = dvdlpcmdec->base_chain (pad, parent, subbuf);
|
||||
}
|
||||
} else {
|
||||
GST_LOG_OBJECT (dvdlpcmdec,
|
||||
|
|
@ -558,11 +414,10 @@ gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|||
size - off);
|
||||
subbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, off, size - off);
|
||||
GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
|
||||
ret = gst_dvdlpcmdec_chain_raw (pad, parent, subbuf);
|
||||
ret = dvdlpcmdec->base_chain (pad, parent, subbuf);
|
||||
}
|
||||
|
||||
done:
|
||||
gst_buffer_unmap (buf, &map);
|
||||
gst_buffer_unref (buf);
|
||||
|
||||
return ret;
|
||||
|
|
@ -585,13 +440,6 @@ invalid_data:
|
|||
ret = GST_FLOW_OK;
|
||||
goto done;
|
||||
}
|
||||
negotiation_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
|
||||
("Failed to configure output format"));
|
||||
ret = GST_FLOW_NOT_NEGOTIATED;
|
||||
goto done;
|
||||
}
|
||||
bad_first_access:
|
||||
{
|
||||
GST_WARNING_OBJECT (pad, "Bad first_access parameter in buffer");
|
||||
|
|
@ -604,15 +452,87 @@ bad_first_access:
|
|||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_dvdlpcmdec_chain_raw (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
||||
gst_dvdlpcmdec_parse_dvd (GstDvdLpcmDec * dvdlpcmdec, GstAdapter * adapter,
|
||||
gint * offset, gint * len)
|
||||
{
|
||||
GstDvdLpcmDec *dvdlpcmdec;
|
||||
guint32 header;
|
||||
const guint8 *data;
|
||||
|
||||
data = (const guint8 *) gst_adapter_map (adapter, 3);
|
||||
if (!data)
|
||||
goto too_small;
|
||||
|
||||
/* Don't keep the 'frame number' low 5 bits of the first byte */
|
||||
header = ((data[0] & 0xC0) << 16) | (data[1] << 8) | data[2];
|
||||
|
||||
gst_adapter_unmap (adapter);
|
||||
|
||||
/* see if we have a new header */
|
||||
if (header != dvdlpcmdec->header) {
|
||||
parse_header (dvdlpcmdec, header);
|
||||
|
||||
if (!gst_dvdlpcmdec_set_output_format (dvdlpcmdec))
|
||||
goto negotiation_failed;
|
||||
|
||||
dvdlpcmdec->header = header;
|
||||
}
|
||||
|
||||
*offset = 3;
|
||||
*len = gst_adapter_available (adapter) - 3;
|
||||
|
||||
return GST_FLOW_OK;
|
||||
|
||||
/* ERRORS */
|
||||
too_small:
|
||||
{
|
||||
/* Buffer is too small */
|
||||
GST_ELEMENT_WARNING (dvdlpcmdec, STREAM, DECODE,
|
||||
("Invalid data found parsing LPCM packet"),
|
||||
("LPCM packet was too small. Dropping"));
|
||||
*offset = gst_adapter_available (adapter);
|
||||
return GST_FLOW_EOS;
|
||||
}
|
||||
negotiation_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
|
||||
("Failed to configure output format"));
|
||||
return GST_FLOW_NOT_NEGOTIATED;
|
||||
}
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_dvdlpcmdec_parse (GstAudioDecoder * bdec, GstAdapter * adapter,
|
||||
gint * offset, gint * len)
|
||||
{
|
||||
GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (bdec);
|
||||
|
||||
switch (dvdlpcmdec->mode) {
|
||||
case GST_LPCM_UNKNOWN:
|
||||
return GST_FLOW_NOT_NEGOTIATED;
|
||||
|
||||
case GST_LPCM_RAW:
|
||||
*offset = 0;
|
||||
*len = gst_adapter_available (adapter);
|
||||
return GST_FLOW_OK;
|
||||
|
||||
case GST_LPCM_DVD:
|
||||
return gst_dvdlpcmdec_parse_dvd (dvdlpcmdec, adapter, offset, len);
|
||||
}
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_dvdlpcmdec_handle_frame (GstAudioDecoder * bdec, GstBuffer * buf)
|
||||
{
|
||||
GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (bdec);
|
||||
gsize size;
|
||||
GstFlowReturn ret;
|
||||
guint samples = 0;
|
||||
gint rate, channels;
|
||||
|
||||
dvdlpcmdec = GST_DVDLPCMDEC (parent);
|
||||
/* no fancy draining */
|
||||
if (G_UNLIKELY (!buf))
|
||||
return GST_FLOW_OK;
|
||||
|
||||
size = gst_buffer_get_size (buf);
|
||||
|
||||
|
|
@ -626,9 +546,6 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|||
if (rate == 0)
|
||||
goto not_negotiated;
|
||||
|
||||
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf))
|
||||
dvdlpcmdec->timestamp = GST_BUFFER_TIMESTAMP (buf);
|
||||
|
||||
/* We don't currently do anything at all regarding emphasis, mute or
|
||||
* dynamic_range - I'm not sure what they're for */
|
||||
switch (dvdlpcmdec->width) {
|
||||
|
|
@ -639,7 +556,8 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|||
samples = size / channels / 2;
|
||||
if (samples < 1)
|
||||
goto drop;
|
||||
buf = gst_buffer_make_writable (buf);
|
||||
|
||||
gst_buffer_ref (buf);
|
||||
break;
|
||||
}
|
||||
case 20:
|
||||
|
|
@ -688,7 +606,6 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|||
}
|
||||
gst_buffer_unmap (outbuf, &destmap);
|
||||
gst_buffer_unmap (buf, &srcmap);
|
||||
gst_buffer_unref (buf);
|
||||
buf = outbuf;
|
||||
break;
|
||||
}
|
||||
|
|
@ -698,51 +615,57 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|||
* and last byte are already correct */
|
||||
guint count = size / 12;
|
||||
gint i;
|
||||
GstMapInfo map;
|
||||
guint8 *ptr;
|
||||
GstMapInfo srcmap, destmap;
|
||||
guint8 *src, *dest;
|
||||
GstBuffer *outbuf;
|
||||
|
||||
samples = size / channels / 3;
|
||||
|
||||
if (samples < 1)
|
||||
goto drop;
|
||||
|
||||
/* Ensure our output buffer is writable */
|
||||
buf = gst_buffer_make_writable (buf);
|
||||
outbuf = gst_buffer_new_allocate (NULL, size, NULL);
|
||||
gst_buffer_copy_into (outbuf, buf, GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
|
||||
|
||||
gst_buffer_map (buf, &map, GST_MAP_READWRITE);
|
||||
ptr = map.data;
|
||||
gst_buffer_map (buf, &srcmap, GST_MAP_READ);
|
||||
gst_buffer_map (outbuf, &destmap, GST_MAP_READWRITE);
|
||||
src = srcmap.data;
|
||||
dest = destmap.data;
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
guint8 tmp;
|
||||
dest[0] = src[0];
|
||||
dest[1] = src[1];
|
||||
dest[11] = src[11];
|
||||
dest[10] = src[7];
|
||||
dest[7] = src[5];
|
||||
dest[5] = src[9];
|
||||
dest[9] = src[6];
|
||||
dest[6] = src[4];
|
||||
dest[4] = src[3];
|
||||
dest[3] = src[2];
|
||||
dest[2] = src[8];
|
||||
dest[8] = src[10];
|
||||
|
||||
tmp = ptr[10];
|
||||
ptr[10] = ptr[7];
|
||||
ptr[7] = ptr[5];
|
||||
ptr[5] = ptr[9];
|
||||
ptr[9] = ptr[6];
|
||||
ptr[6] = ptr[4];
|
||||
ptr[4] = ptr[3];
|
||||
ptr[3] = ptr[2];
|
||||
ptr[2] = ptr[8];
|
||||
ptr[8] = tmp;
|
||||
|
||||
ptr += 12;
|
||||
src += 12;
|
||||
dest += 12;
|
||||
}
|
||||
gst_buffer_unmap (buf, &map);
|
||||
gst_buffer_unmap (outbuf, &destmap);
|
||||
gst_buffer_unmap (buf, &srcmap);
|
||||
buf = outbuf;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
goto invalid_width;
|
||||
}
|
||||
|
||||
update_timestamps (dvdlpcmdec, buf, samples);
|
||||
|
||||
if (dvdlpcmdec->lpcm_layout)
|
||||
if (dvdlpcmdec->lpcm_layout) {
|
||||
buf = gst_buffer_make_writable (buf);
|
||||
gst_audio_buffer_reorder_channels (buf, dvdlpcmdec->info.finfo->format,
|
||||
dvdlpcmdec->info.channels, dvdlpcmdec->lpcm_layout,
|
||||
dvdlpcmdec->info.position);
|
||||
}
|
||||
|
||||
ret = gst_pad_push (dvdlpcmdec->srcpad, buf);
|
||||
ret = gst_audio_decoder_finish_frame (bdec, buf, 1);
|
||||
|
||||
done:
|
||||
return ret;
|
||||
|
|
@ -752,7 +675,6 @@ drop:
|
|||
{
|
||||
GST_DEBUG_OBJECT (dvdlpcmdec,
|
||||
"Buffer of size %" G_GSIZE_FORMAT " is too small. Dropping", size);
|
||||
gst_buffer_unref (buf);
|
||||
ret = GST_FLOW_OK;
|
||||
goto done;
|
||||
}
|
||||
|
|
@ -760,7 +682,6 @@ not_negotiated:
|
|||
{
|
||||
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
|
||||
("Buffer pushed before negotiation"));
|
||||
gst_buffer_unref (buf);
|
||||
ret = GST_FLOW_NOT_NEGOTIATED;
|
||||
goto done;
|
||||
}
|
||||
|
|
@ -768,88 +689,14 @@ invalid_width:
|
|||
{
|
||||
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, WRONG_TYPE, (NULL),
|
||||
("Invalid sample width configured"));
|
||||
gst_buffer_unref (buf);
|
||||
ret = GST_FLOW_NOT_NEGOTIATED;
|
||||
goto done;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
dvdlpcmdec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
||||
{
|
||||
GstDvdLpcmDec *dvdlpcmdec;
|
||||
gboolean res;
|
||||
|
||||
dvdlpcmdec = GST_DVDLPCMDEC (parent);
|
||||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_CAPS:
|
||||
{
|
||||
GstCaps *caps;
|
||||
|
||||
gst_event_parse_caps (event, &caps);
|
||||
res = gst_dvdlpcmdec_setcaps (pad, caps);
|
||||
gst_event_unref (event);
|
||||
break;
|
||||
}
|
||||
case GST_EVENT_SEGMENT:
|
||||
{
|
||||
GstSegment seg;
|
||||
|
||||
gst_event_copy_segment (event, &seg);
|
||||
|
||||
GST_DEBUG_OBJECT (dvdlpcmdec, "segment %" GST_SEGMENT_FORMAT, &seg);
|
||||
|
||||
dvdlpcmdec->segment = seg;
|
||||
|
||||
if (seg.format == GST_FORMAT_TIME) {
|
||||
dvdlpcmdec->timestamp = GST_CLOCK_TIME_NONE;
|
||||
} else {
|
||||
dvdlpcmdec->timestamp = 0;
|
||||
}
|
||||
res = gst_pad_push_event (dvdlpcmdec->srcpad, event);
|
||||
break;
|
||||
}
|
||||
case GST_EVENT_FLUSH_STOP:
|
||||
gst_segment_init (&dvdlpcmdec->segment, GST_FORMAT_UNDEFINED);
|
||||
res = gst_pad_push_event (dvdlpcmdec->srcpad, event);
|
||||
break;
|
||||
default:
|
||||
res = gst_pad_push_event (dvdlpcmdec->srcpad, event);
|
||||
break;
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_dvdlpcmdec_change_state (GstElement * element, GstStateChange transition)
|
||||
{
|
||||
GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (element);
|
||||
GstStateChangeReturn res;
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
gst_dvdlpcm_reset (dvdlpcmdec);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
res = parent_class->change_state (element, transition);
|
||||
|
||||
switch (transition) {
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
GST_DEBUG_CATEGORY_INIT (dvdlpcm_debug, "dvdlpcmdec", 0, "DVD LPCM Decoder");
|
||||
|
||||
if (!gst_element_register (plugin, "dvdlpcmdec", GST_RANK_PRIMARY,
|
||||
GST_TYPE_DVDLPCMDEC)) {
|
||||
|
|
|
|||
|
|
@ -23,6 +23,7 @@
|
|||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/audio/audio.h>
|
||||
#include <gst/audio/gstaudiodecoder.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
|
|
@ -40,11 +41,18 @@ G_BEGIN_DECLS
|
|||
typedef struct _GstDvdLpcmDec GstDvdLpcmDec;
|
||||
typedef struct _GstDvdLpcmDecClass GstDvdLpcmDecClass;
|
||||
|
||||
typedef enum {
|
||||
GST_LPCM_UNKNOWN,
|
||||
GST_LPCM_RAW,
|
||||
GST_LPCM_DVD,
|
||||
} GstDvdLpcmMode;
|
||||
|
||||
struct _GstDvdLpcmDec {
|
||||
GstElement element;
|
||||
GstAudioDecoder element;
|
||||
|
||||
GstPad *sinkpad,*srcpad;
|
||||
GstPadChainFunction base_chain;
|
||||
|
||||
GstDvdLpcmMode mode;
|
||||
guint32 header;
|
||||
|
||||
GstAudioInfo info;
|
||||
|
|
@ -55,11 +63,10 @@ struct _GstDvdLpcmDec {
|
|||
gint mute;
|
||||
|
||||
GstClockTime timestamp;
|
||||
GstSegment segment;
|
||||
};
|
||||
|
||||
struct _GstDvdLpcmDecClass {
|
||||
GstElementClass parent_class;
|
||||
GstAudioDecoderClass parent_class;
|
||||
};
|
||||
|
||||
GType gst_dvdlpcmdec_get_type (void);
|
||||
|
|
|
|||
Loading…
Reference in a new issue