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ext/flac/gstflacdec.c: Emit metadata messages when a PICTURE block is encountered.

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Original commit message from CVS:
Patch by: John Millikin <jmillikin at gmail dot com>
* ext/flac/gstflacdec.c: (gst_flac_dec_setup_seekable_decoder),
(gst_flac_dec_setup_stream_decoder),
(gst_flac_normalize_picture_mime_type),
(gst_flac_extract_picture_buffer),
(gst_flac_dec_metadata_callback):
Emit metadata messages when a PICTURE block is encountered.
Fixes #506715.
This commit is contained in:
John Millikin 2008-01-03 12:26:03 +00:00 committed by Wim Taymans
parent 311264bcf8
commit e8833df814
2 changed files with 149 additions and 0 deletions
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12
ChangeLog
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@ -1,3 +1,15 @@
2008-01-03 Wim Taymans <wim.taymans@collabora.co.uk>
Patch by: John Millikin <jmillikin at gmail dot com>
* ext/flac/gstflacdec.c: (gst_flac_dec_setup_seekable_decoder),
(gst_flac_dec_setup_stream_decoder),
(gst_flac_normalize_picture_mime_type),
(gst_flac_extract_picture_buffer),
(gst_flac_dec_metadata_callback):
Emit metadata messages when a PICTURE block is encountered.
Fixes #506715.
2008-01-02 Thijs Vermeir <thijsvermeir@gmail.com>
* gst/avi/gstavi.c:

137
ext/flac/gstflacdec.c
View file

@ -54,6 +54,7 @@
#include "gstflacdec.h"
#include <gst/gst-i18n-plugin.h>
#include <gst/gsttagsetter.h>
#include <gst/base/gsttypefindhelper.h>
#include <gst/tag/tag.h>
@ -299,6 +300,8 @@ gst_flac_dec_setup_seekable_decoder (GstFlacDec * dec)
gst_flac_dec_write_seekable);
FLAC__seekable_stream_decoder_set_metadata_respond (dec->seekable_decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__seekable_stream_decoder_set_metadata_respond (dec->seekable_decoder,
FLAC__METADATA_TYPE_PICTURE);
FLAC__seekable_stream_decoder_set_metadata_callback (dec->seekable_decoder,
gst_flac_dec_metadata_callback_seekable);
FLAC__seekable_stream_decoder_set_error_callback (dec->seekable_decoder,
@ -308,6 +311,8 @@ gst_flac_dec_setup_seekable_decoder (GstFlacDec * dec)
dec->seekable_decoder = FLAC__stream_decoder_new ();
FLAC__stream_decoder_set_metadata_respond (dec->seekable_decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__stream_decoder_set_metadata_respond (dec->seekable_decoder,
FLAC__METADATA_TYPE_PICTURE);
FLAC__stream_decoder_set_md5_checking (dec->seekable_decoder, false); /* no point calculating since it's never checked here */
#endif
}
@ -328,6 +333,8 @@ gst_flac_dec_setup_stream_decoder (GstFlacDec * dec)
gst_flac_dec_write_stream);
FLAC__stream_decoder_set_metadata_respond (dec->stream_decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__stream_decoder_set_metadata_respond (dec->stream_decoder,
FLAC__METADATA_TYPE_PICTURE);
FLAC__stream_decoder_set_metadata_callback (dec->stream_decoder,
gst_flac_dec_metadata_callback_stream);
FLAC__stream_decoder_set_error_callback (dec->stream_decoder,
@ -337,6 +344,8 @@ gst_flac_dec_setup_stream_decoder (GstFlacDec * dec)
FLAC__stream_decoder_set_md5_checking (dec->stream_decoder, false); /* no point calculating since it's never checked here */
FLAC__stream_decoder_set_metadata_respond (dec->stream_decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__stream_decoder_set_metadata_respond (dec->stream_decoder,
FLAC__METADATA_TYPE_PICTURE);
#endif
}
@ -564,6 +573,130 @@ gst_flac_dec_scan_for_last_block (GstFlacDec * flacdec, gint64 * samples)
}
}
static gchar *
gst_flac_normalize_picture_mime_type (const gchar * old_mime_type,
gboolean * is_pic_uri)
{
gchar *mime_str;
g_return_val_if_fail (old_mime_type != NULL, NULL);
/* Make lower-case */
mime_str = g_ascii_strdown (old_mime_type, -1);
/* Fix up 'jpg' => 'jpeg' in mime/media type */
if (g_ascii_strcasecmp (mime_str, "jpg") == 0 ||
g_ascii_strcasecmp (mime_str, "image/jpg") == 0) {
g_free (mime_str);
mime_str = g_strdup ("image/jpeg");
}
/* Check if the picture is a URI reference */
*is_pic_uri = (strcmp (mime_str, "-->") == 0);
if (!(*is_pic_uri) && *mime_str && strchr (mime_str, '/') == NULL) {
gchar *tmp = g_strdup_printf ("image/%s", mime_str);
g_free (mime_str);
mime_str = tmp;
}
return mime_str;
}
static void
gst_flac_extract_picture_buffer (GstFlacDec * flacdec,
const FLAC__StreamMetadata * metadata)
{
/* Most of this is copied from gst/id3demux/id3v2frames.c */
gchar *mime_type;
GstBuffer *image;
GstCaps *image_caps;
FLAC__StreamMetadata_Picture picture;
gboolean is_pic_uri;
g_return_if_fail (metadata->type == FLAC__METADATA_TYPE_PICTURE);
GST_LOG ("Got PICTURE block");
picture = metadata->data.picture;
is_pic_uri = FALSE;
mime_type = gst_flac_normalize_picture_mime_type (picture.mime_type,
&is_pic_uri);
GST_DEBUG ("PICTURE MIME-type is: \"%s\"", mime_type);
GST_DEBUG ("image data is %u bytes", picture.data_length);
if (is_pic_uri) {
gchar *uri;
uri = g_strndup ((gchar *) picture.data, picture.data_length);
GST_DEBUG ("image URI: %s", uri);
image = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (image) = (guint8 *) uri; /* take ownership */
GST_BUFFER_DATA (image) = (guint8 *) uri;
GST_BUFFER_SIZE (image) = picture.data_length;
image_caps = gst_caps_new_simple ("text/uri-list", NULL);
}
else {
image = gst_buffer_new_and_alloc (picture.data_length);
memcpy (GST_BUFFER_DATA (image), picture.data, picture.data_length);
/* if possible use GStreamer media type rather than declared type */
image_caps = gst_type_find_helper_for_buffer (NULL, image, NULL);
if (image_caps) {
GST_DEBUG ("Found GStreamer media type: %" GST_PTR_FORMAT, image_caps);
} else if (mime_type && *mime_type) {
GST_DEBUG ("No GStreamer media type found, using declared type: \"%s\"",
mime_type);
image_caps = gst_caps_new_simple (mime_type, NULL);
} else {
GST_DEBUG ("Empty declared mime type, ignoring image frame");
image = NULL;
image_caps = NULL;
}
}
g_free (mime_type);
if (image && image_caps) {
GstTagList *tags;
FLAC__StreamMetadata_Picture_Type pic_type = picture.type;
tags = gst_tag_list_new ();
if (pic_type > 20) {
pic_type = GST_TAG_IMAGE_TYPE_UNDEFINED;
}
gst_structure_set (gst_caps_get_structure (image_caps, 0),
"image-type", GST_TYPE_TAG_IMAGE_TYPE,
(GstTagImageType) pic_type, NULL);
gst_buffer_set_caps (image, image_caps);
gst_caps_unref (image_caps);
if (pic_type == 1 || pic_type == 2) {
/* file icon of some sort */
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND,
GST_TAG_PREVIEW_IMAGE, image, NULL);
} else {
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_IMAGE, image, NULL);
}
gst_buffer_unref (image);
/* Announce discovered tags */
gst_element_found_tags_for_pad (GST_ELEMENT (flacdec), flacdec->srcpad,
tags);
} else {
if (image)
gst_buffer_unref (image);
GST_DEBUG ("problem parsing PICTURE block, skipping");
}
}
static void
gst_flac_dec_metadata_callback (GstFlacDec * flacdec,
const FLAC__StreamMetadata * metadata)
@ -609,6 +742,10 @@ gst_flac_dec_metadata_callback (GstFlacDec * flacdec,
}
break;
}
case FLAC__METADATA_TYPE_PICTURE:{
gst_flac_extract_picture_buffer (flacdec, metadata);
break;
}
case FLAC__METADATA_TYPE_VORBIS_COMMENT:
gst_flac_dec_update_metadata (flacdec, metadata);
break;