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wavparse: use typefind functions to check if PCM data contains dts stream

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Use new dts audio typefinder from -base to check if the PCM data
contains a dts stream. This way we recognise more varieties more
reliably and also detect the dts stream if there isn't a frame
sync right at the start of the data.

Fixes #413942.
This commit is contained in:
Tim-Philipp Müller 2010-06-11 20:50:23 +01:00
parent 12ec2c3d6d
commit 754f3a315b
1 changed files with 20 additions and 9 deletions
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29
gst/wavparse/gstwavparse.c
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@ -55,6 +55,7 @@
#include "gstwavparse.h"
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-media.h"
#include <gst/base/gsttypefindhelper.h>
#include <gst/gst-i18n-plugin.h>
GST_DEBUG_CATEGORY_STATIC (wavparse_debug);
@ -1728,22 +1729,32 @@ static void
gst_wavparse_add_src_pad (GstWavParse * wav, GstBuffer * buf)
{
GstStructure *s;
const guint8 dts_marker[] = { 0xFF, 0x1F, 0x00, 0xE8, 0xF1, 0x07 };
GST_DEBUG_OBJECT (wav, "adding src pad");
if (wav->caps) {
s = gst_caps_get_structure (wav->caps, 0);
if (s && gst_structure_has_name (s, "audio/x-raw-int") && buf &&
GST_BUFFER_SIZE (buf) > 6 &&
memcmp (GST_BUFFER_DATA (buf), dts_marker, 6) == 0) {
if (s && gst_structure_has_name (s, "audio/x-raw-int") && buf != NULL) {
GstTypeFindProbability prob;
GstCaps *tf_caps;
GST_WARNING_OBJECT (wav, "Found DTS marker in file marked as raw PCM");
gst_caps_unref (wav->caps);
wav->caps = gst_caps_from_string ("audio/x-dts");
tf_caps = gst_type_find_helper_for_buffer (GST_OBJECT (wav), buf, &prob);
if (tf_caps != NULL) {
s = gst_caps_get_structure (tf_caps, 0);
if (gst_structure_has_name (s, "audio/x-dts")
&& prob >= GST_TYPE_FIND_LIKELY) {
GST_INFO_OBJECT (wav, "Found DTS marker in file marked as raw PCM");
gst_caps_unref (wav->caps);
wav->caps = tf_caps;
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, "dts", NULL);
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, "dts", NULL);
} else {
GST_DEBUG_OBJECT (wav, "found caps %" GST_PTR_FORMAT " for stream "
"marked as raw PCM audio, but ignoring for now", tf_caps);
gst_caps_unref (tf_caps);
}
}
}
}