#include <string.h>
#include "gstdcaparse.h"
-#include <gst/base/gstbytereader.h>
-#include <gst/base/gstbitreader.h>
+#include <gst/base/base.h>
+#include <gst/pbutils/pbutils.h>
GST_DEBUG_CATEGORY_STATIC (dca_parse_debug);
#define GST_CAT_DEFAULT dca_parse_debug
static gboolean gst_dca_parse_stop (GstBaseParse * parse);
static GstFlowReturn gst_dca_parse_handle_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, gint * skipsize);
+static GstFlowReturn gst_dca_parse_pre_push_frame (GstBaseParse * parse,
+ GstBaseParseFrame * frame);
static GstCaps *gst_dca_parse_get_sink_caps (GstBaseParse * parse,
GstCaps * filter);
static gboolean gst_dca_parse_set_sink_caps (GstBaseParse * parse,
parse_class->start = GST_DEBUG_FUNCPTR (gst_dca_parse_start);
parse_class->stop = GST_DEBUG_FUNCPTR (gst_dca_parse_stop);
parse_class->handle_frame = GST_DEBUG_FUNCPTR (gst_dca_parse_handle_frame);
+ parse_class->pre_push_frame =
+ GST_DEBUG_FUNCPTR (gst_dca_parse_pre_push_frame);
parse_class->get_sink_caps = GST_DEBUG_FUNCPTR (gst_dca_parse_get_sink_caps);
parse_class->set_sink_caps = GST_DEBUG_FUNCPTR (gst_dca_parse_set_sink_caps);
dcaparse->block_size = -1;
dcaparse->frame_size = -1;
dcaparse->last_sync = 0;
+ dcaparse->sent_codec_tag = FALSE;
}
static void
gst_dca_parse_reset (dcaparse);
dcaparse->baseparse_chainfunc =
GST_BASE_PARSE_SINK_PAD (GST_BASE_PARSE (dcaparse))->chainfunc;
+
+ GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (dcaparse));
+ GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (dcaparse));
}
static void
GstDcaParse *dcaparse = GST_DCA_PARSE (parse);
GstBuffer *buf = frame->buffer;
GstByteReader r;
- gboolean parser_draining;
gboolean parser_in_sync;
gboolean terminator;
guint32 sync = 0;
- guint size, rate, chans, num_blocks, samples_per_block, depth;
+ guint size = 0, rate, chans, num_blocks, samples_per_block, depth;
gint block_size;
gint endianness;
gint off = -1;
dcaparse->last_sync = sync;
+ /* FIXME: Don't look for a second syncword, there are streams out there
+ * that consistently contain garbage between every frame so we never ever
+ * find a second consecutive syncword.
+ * See https://bugzilla.gnome.org/show_bug.cgi?id=738237
+ */
+#if 0
parser_draining = GST_BASE_PARSE_DRAINING (parse);
if (!parser_in_sync && !parser_draining) {
goto cleanup;
}
}
+#endif
/* found frame */
ret = GST_FLOW_OK;
* */
static GstFlowReturn
-gst_dca_parse_chain_priv (GstPad * pad, GstObject *parent, GstBuffer * buffer)
+gst_dca_parse_chain_priv (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
- GstBuffer *newbuf;
- GstFlowReturn ret;
GstDcaParse *dcaparse = GST_DCA_PARSE (parent);
+ GstFlowReturn ret;
+ GstBuffer *newbuf;
+ gsize size;
+
+ size = gst_buffer_get_size (buffer);
+ if (size >= 2) {
+ newbuf = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL, 2, size - 2);
+ gst_buffer_unref (buffer);
+ ret = dcaparse->baseparse_chainfunc (pad, parent, newbuf);
+ } else {
+ gst_buffer_unref (buffer);
+ ret = GST_FLOW_OK;
+ }
- newbuf = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL,
- 2, gst_buffer_get_size (buffer) - 2);
- ret = dcaparse->baseparse_chainfunc (pad, parent, newbuf);
- gst_buffer_unref (buffer);
return ret;
}
+static void
+remove_fields (GstCaps * caps)
+{
+ guint i, n;
+
+ n = gst_caps_get_size (caps);
+ for (i = 0; i < n; i++) {
+ GstStructure *s = gst_caps_get_structure (caps, i);
+
+ gst_structure_remove_field (s, "framed");
+ }
+}
+
static GstCaps *
gst_dca_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
{
GstCaps *res;
templ = gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse));
- peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), filter);
+ if (filter) {
+ GstCaps *fcopy = gst_caps_copy (filter);
+ /* Remove the fields we convert */
+ remove_fields (fcopy);
+ peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), fcopy);
+ gst_caps_unref (fcopy);
+ } else
+ peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), NULL);
if (peercaps) {
- guint i, n;
-
/* Remove the framed field */
peercaps = gst_caps_make_writable (peercaps);
- n = gst_caps_get_size (peercaps);
- for (i = 0; i < n; i++) {
- GstStructure *s = gst_caps_get_structure (peercaps, i);
-
- gst_structure_remove_field (s, "framed");
- }
+ remove_fields (peercaps);
res = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
- res = gst_caps_make_writable (res);
-
- /* Append the template caps because we still want to accept
- * caps without any fields in the case upstream does not
- * know anything.
- */
- gst_caps_append (res, templ);
+ gst_caps_unref (templ);
} else {
res = templ;
}
}
return TRUE;
}
+
+static GstFlowReturn
+gst_dca_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
+{
+ GstDcaParse *dcaparse = GST_DCA_PARSE (parse);
+
+ if (!dcaparse->sent_codec_tag) {
+ GstTagList *taglist;
+ GstCaps *caps;
+
+ taglist = gst_tag_list_new_empty ();
+
+ /* codec tag */
+ caps = gst_pad_get_current_caps (GST_BASE_PARSE_SRC_PAD (parse));
+ gst_pb_utils_add_codec_description_to_tag_list (taglist,
+ GST_TAG_AUDIO_CODEC, caps);
+ gst_caps_unref (caps);
+
+ gst_base_parse_merge_tags (parse, taglist, GST_TAG_MERGE_REPLACE);
+ gst_tag_list_unref (taglist);
+
+ /* also signals the end of first-frame processing */
+ dcaparse->sent_codec_tag = TRUE;
+ }
+
+ return GST_FLOW_OK;
+}