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oggdemux: perform more (vorbis comment header) tag extractions

Browse source 
In particular, move comment header parsing to gstoggstrem.c.
Thanks to Felipe Contreras.

Fixes #629349 (partially).
This commit is contained in:
Sreerenj Balachandran 2010-09-14 23:08:51 +03:00 committed by Mark Nauwelaerts
parent 7c4fcf776f
commit 2319c85f46
3 changed files with 132 additions and 56 deletions
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61
ext/ogg/gstoggdemux.c
View file

@ -452,34 +452,8 @@ gst_ogg_demux_chain_peer (GstOggPad * pad, ogg_packet * packet,
if (bytes < 1)
goto empty_packet;
if (data[0] & 1) {
if ((data[0] & 1) || (data[0] & 3 && pad->map.is_ogm_text)) {
/* We don't push header packets for OGM */
cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
goto done;
} else if (data[0] & 3 && pad->map.is_ogm_text) {
GstTagList *tags;
/* We don't push comment packets either for text streams,
* other streams will handle the comment packets in the
* decoder */
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = (guint8 *) data;
GST_BUFFER_SIZE (buf) = bytes;
tags = gst_tag_list_from_vorbiscomment_buffer (buf,
(const guint8 *) "\003vorbis", 7, NULL);
gst_buffer_unref (buf);
buf = NULL;
if (tags) {
GST_DEBUG_OBJECT (ogg, "tags = %" GST_PTR_FORMAT, tags);
gst_element_found_tags_for_pad (GST_ELEMENT (ogg), GST_PAD_CAST (pad),
tags);
} else {
GST_DEBUG_OBJECT (ogg, "failed to extract tags from vorbis comment");
}
cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
goto done;
}
@ -497,32 +471,9 @@ gst_ogg_demux_chain_peer (GstOggPad * pad, ogg_packet * packet,
}
}
} else if (pad->map.is_vp8) {
if (packet->bytes >= 7 && memcmp (packet->packet, "OVP80\2 ", 7) == 0) {
GstTagList *tags;
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = (guint8 *) packet->packet;
GST_BUFFER_SIZE (buf) = packet->bytes;
tags = gst_tag_list_from_vorbiscomment_buffer (buf,
(const guint8 *) "OVP80\2 ", 7, NULL);
gst_buffer_unref (buf);
buf = NULL;
if (tags) {
GST_DEBUG_OBJECT (ogg, "tags = %" GST_PTR_FORMAT, tags);
gst_element_found_tags_for_pad (GST_ELEMENT (ogg), GST_PAD_CAST (pad),
tags);
} else {
GST_DEBUG_OBJECT (ogg,
"failed to extract VP8 tags from vorbis comment");
}
/* We don't push header packets for VP8 */
cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
goto done;
} else if (packet->b_o_s || (packet->bytes >= 5
&& memcmp (packet->packet, "OVP80", 5) == 0)) {
if ((packet->bytes >= 7 && memcmp (packet->packet, "OVP80\2 ", 7) == 0) ||
packet->b_o_s ||
(packet->bytes >= 5 && memcmp (packet->packet, "OVP80", 5) == 0)) {
/* We don't push header packets for VP8 */
cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
goto done;
@ -1791,6 +1742,10 @@ gst_ogg_demux_activate_chain (GstOggDemux * ogg, GstOggChain * chain,
gst_element_add_pad (GST_ELEMENT (ogg), GST_PAD_CAST (pad));
pad->added = TRUE;
if (event && pad->map.taglist) {
gst_element_found_tags_for_pad (GST_ELEMENT_CAST (ogg),
GST_PAD_CAST (pad), pad->map.taglist);
}
}
/* prefer the index bitrate over the ones encoded in the streams */
ogg->bitrate = (idx_bitrate ? idx_bitrate : bitrate);

121
ext/ogg/gstoggstream.c
View file

@ -596,6 +596,32 @@ granulepos_to_key_granule_vp8 (GstOggStream * pad, gint64 granulepos)
static gboolean
is_header_vp8 (GstOggStream * pad, ogg_packet * packet)
{
if (packet->bytes >= 7 && memcmp (packet->packet, "OVP80\2 ", 7) == 0) {
GstBuffer *buf = NULL;
gchar *encoder = NULL;
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = (guint8 *) packet->packet;
GST_BUFFER_SIZE (buf) = packet->bytes;
pad->taglist = gst_tag_list_from_vorbiscomment_buffer (buf,
(const guint8 *) "OVP80\2 ", 7, &encoder);
if (!pad->taglist) {
GST_ERROR_OBJECT (pad, "couldn't decode comments");
pad->taglist = gst_tag_list_new ();
}
gst_buffer_unref (buf);
buf = NULL;
if (encoder) {
if (encoder[0])
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER, encoder, NULL);
g_free (encoder);
}
}
if (packet->bytes >= 5 && packet->packet[0] == 0x4F &&
packet->packet[1] == 0x56 && packet->packet[2] == 0x50 &&
packet->packet[3] == 0x38 && packet->packet[4] == 0x30)
@ -611,7 +637,9 @@ setup_vorbis_mapper (GstOggStream * pad, ogg_packet * packet)
guint8 *data = packet->packet;
guint chans;
data += 1 + 6 + 4;
data += 1 + 6;
pad->version = GST_READ_UINT32_LE (data);
data += 4;
chans = GST_READ_UINT8 (data);
data += 1;
pad->granulerate_n = GST_READ_UINT32_LE (data);
@ -620,8 +648,26 @@ setup_vorbis_mapper (GstOggStream * pad, ogg_packet * packet)
pad->last_size = 0;
GST_LOG ("sample rate: %d", pad->granulerate_n);
data += 8;
pad->bitrate = GST_READ_UINT32_LE (data);
data += 4;
pad->bitrate_upper = GST_READ_UINT32_LE (data);
data += 4;
pad->bitrate_nominal = GST_READ_UINT32_LE (data);
data += 4;
pad->bitrate_lower = GST_READ_UINT32_LE (data);
if (pad->bitrate_nominal > 0 && pad->bitrate_nominal <= 0x7FFFFFFF)
pad->bitrate = pad->bitrate_nominal;
if (pad->bitrate_upper > 0 && pad->bitrate_upper <= 0x7FFFFFFF)
if (!pad->bitrate)
pad->bitrate = pad->bitrate_upper;
if (pad->bitrate_lower > 0 && pad->bitrate_lower <= 0x7FFFFFFF)
if (!pad->bitrate)
pad->bitrate = pad->bitrate_lower;
pad->taglist = NULL;
GST_LOG ("bit rate: %d", pad->bitrate);
pad->n_header_packets = 3;
@ -644,6 +690,49 @@ is_header_vorbis (GstOggStream * pad, ogg_packet * packet)
if (packet->bytes > 0 && (packet->packet[0] & 0x01) == 0)
return FALSE;
if (((guint8 *) (packet->packet))[0] == 0x03) {
GstBuffer *buf = NULL;
gchar *encoder = NULL;
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = (guint8 *) packet->packet;
GST_BUFFER_SIZE (buf) = packet->bytes;
pad->taglist = gst_tag_list_from_vorbiscomment_buffer (buf,
(const guint8 *) "\003vorbis", 7, &encoder);
if (!pad->taglist) {
GST_ERROR_OBJECT (pad, "couldn't decode comments");
pad->taglist = gst_tag_list_new ();
}
gst_buffer_unref (buf);
buf = NULL;
if (encoder) {
if (encoder[0])
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER, encoder, NULL);
g_free (encoder);
}
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER_VERSION, pad->version, NULL);
if (pad->bitrate_nominal > 0 && pad->bitrate_nominal <= 0x7FFFFFFF)
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_NOMINAL_BITRATE, (guint) pad->bitrate_nominal, NULL);
if (pad->bitrate_upper > 0 && pad->bitrate_upper <= 0x7FFFFFFF)
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_MAXIMUM_BITRATE, (guint) pad->bitrate_upper, NULL);
if (pad->bitrate_lower > 0 && pad->bitrate_lower <= 0x7FFFFFFF)
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_MINIMUM_BITRATE, (guint) pad->bitrate_lower, NULL);
if (pad->bitrate)
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_BITRATE, (guint) pad->bitrate, NULL);
}
if (packet->packet[0] == 5) {
parse_vorbis_setup_packet (pad, packet);
}
@ -1204,6 +1293,32 @@ gst_ogg_map_search_index (GstOggStream * pad, gboolean before,
static gboolean
is_header_ogm (GstOggStream * pad, ogg_packet * packet)
{
if (!(packet->packet[0] & 1) && (packet->packet[0] & 3 && pad->is_ogm_text)) {
GstBuffer *buf = NULL;
gchar *encoder = NULL;
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = (guint8 *) packet->packet;
GST_BUFFER_SIZE (buf) = packet->bytes;;
pad->taglist = gst_tag_list_from_vorbiscomment_buffer (buf,
(const guint8 *) "\003vorbis", 7, &encoder);
if (!pad->taglist) {
GST_ERROR ("couldn't decode comments");
pad->taglist = gst_tag_list_new ();
}
gst_buffer_unref (buf);
buf = NULL;
if (encoder) {
if (encoder[0])
gst_tag_list_add (pad->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER, encoder, NULL);
g_free (encoder);
}
}
if (packet->bytes >= 1 && (packet->packet[0] & 0x01))
return TRUE;

6
ext/ogg/gstoggstream.h
View file

@ -25,6 +25,7 @@
#include <ogg/ogg.h>
#include <gst/gst.h>
#include <gst/tag/tag.h>
G_BEGIN_DECLS
@ -79,6 +80,11 @@ struct _GstOggStream
int vorbis_log2_num_modes;
int vorbis_mode_sizes[256];
int last_size;
int version;
long bitrate_upper;
long bitrate_nominal;
long bitrate_lower;
GstTagList *taglist;
/* theora stuff */
gboolean theora_has_zero_keyoffset;
/* VP8 stuff */