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Muxer writes (in jpeg only) whole EXIF and XMP chunks sent as tags.

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Original commit message from CVS:
Muxer writes (in jpeg only) whole EXIF and XMP chunks sent as tags.
This commit is contained in:
Edgard Lima 2007-11-30 18:30:12 +00:00
parent ddd4af604a
commit d5ad427c73
15 changed files with 184 additions and 174 deletions
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18
ChangeLog
View file

@ -1,3 +1,21 @@
2007-11-30 Edgard Lima <edgard.lima@indt.org.br>
* ext/metadata/gstmetadatamux.c:
* ext/metadata/gstmetadatamux.h:
* ext/metadata/gstmetadataparse.c:
* ext/metadata/gstmetadataparse.h:
* ext/metadata/metadataexif.c:
* ext/metadata/metadataexif.h:
* ext/metadata/metadataiptc.c:
* ext/metadata/metadataiptc.h:
* ext/metadata/metadatamuxjpeg.c:
* ext/metadata/metadatamuxpng.c:
* ext/metadata/metadataparsejpeg.c:
* ext/metadata/metadataparsepng.c:
* ext/metadata/metadataxmp.c:
* ext/metadata/metadataxmp.h:
Muxer writes (in jpeg only) whole EXIF and XMP chunks sent as tags.
2007-11-30 Thijs Vermeir <thijsvermeir@gmail.com>
* gst/librfb/rfbdecoder.c:

59
ext/metadata/gstmetadatamux.c
View file

@ -276,6 +276,8 @@ gst_metadata_mux_init (GstMetadataMux * filter, GstMetadataMuxClass * gclass)
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
metadataparse_xmp_init ();
/* init members */
gst_metadata_mux_init_members (filter);
@ -522,6 +524,12 @@ gst_metadata_mux_sink_event (GstPad * pad, GstEvent * event)
}
break;
case GST_EVENT_TAG:
{
GstTagList *taglist = NULL;
gst_event_parse_tag (event, &taglist);
gst_tag_list_insert (filter->taglist, taglist, GST_TAG_MERGE_REPLACE);
}
break;
default:
break;
@ -544,6 +552,8 @@ gst_metadata_mux_dispose (GObject * object)
gst_metadata_mux_dispose_members (filter);
metadataparse_xmp_dispose ();
G_OBJECT_CLASS (metadata_parent_class)->dispose (object);
}
@ -753,27 +763,29 @@ gst_metadata_mux_get_type_name (int img_type)
}
static void
gst_metadata_update_segment (GstMetadataMux * filter, GstAdapter * adapter,
MetadataChunkType type)
gst_metadata_update_segment (GstMetadataMux * filter, guint8 ** buf,
guint32 * size, MetadataChunkType type)
{
int i;
MetadataChunk *inject = filter->mux_data.inject_chunks.chunk;
const gsize inject_len = filter->mux_data.inject_chunks.len;
guint32 size;
if (adapter == NULL)
if (!(buf && size))
goto done;
size = gst_adapter_available (adapter);
if (size == 0)
if (*buf == 0)
goto done;
if (*size == 0)
goto done;
/* calculate the new position off injected chunks */
for (i = 0; i < inject_len; ++i) {
if (inject[i].type == type) {
inject[i].size = size;
inject[i].data = (guint8 *) gst_adapter_peek (adapter, inject[i].size);
inject[i].size = *size;
if (inject[i].data)
g_free (inject[i].data);
inject[i].data = *buf;
*size = 0;
*buf = 0;
break;
}
}
@ -791,26 +803,22 @@ gst_metadata_create_chunks_from_tags (GstMetadataMux * filter)
GstMessage *msg;
GstTagList *taglist;
GstEvent *event;
guint8 *buf = NULL;
guint32 size = 0;
if (META_DATA_OPTION (filter->mux_data) & META_OPT_EXIF) {
metadatamux_exif_create_chunk_from_tag_list (&filter->mux_data.exif_adapter,
filter->taglist);
gst_metadata_update_segment (filter, filter->mux_data.exif_adapter,
MD_CHUNK_EXIF);
metadatamux_exif_create_chunk_from_tag_list (&buf, &size, filter->taglist);
gst_metadata_update_segment (filter, &buf, &size, MD_CHUNK_EXIF);
}
if (META_DATA_OPTION (filter->mux_data) & META_OPT_IPTC) {
metadatamux_iptc_create_chunk_from_tag_list (&filter->mux_data.iptc_adapter,
filter->taglist);
gst_metadata_update_segment (filter, filter->mux_data.iptc_adapter,
MD_CHUNK_IPTC);
metadatamux_iptc_create_chunk_from_tag_list (&buf, &size, filter->taglist);
gst_metadata_update_segment (filter, &buf, &size, MD_CHUNK_IPTC);
}
if (META_DATA_OPTION (filter->mux_data) & META_OPT_XMP) {
metadatamux_xmp_create_chunk_from_tag_list (&filter->mux_data.xmp_adapter,
filter->taglist);
gst_metadata_update_segment (filter, filter->mux_data.xmp_adapter,
MD_CHUNK_XMP);
metadatamux_xmp_create_chunk_from_tag_list (&buf, &size, filter->taglist);
gst_metadata_update_segment (filter, &buf, &size, MD_CHUNK_XMP);
}
metadata_chunk_array_remove_zero_size (&filter->mux_data.inject_chunks);
@ -900,6 +908,8 @@ gst_metadata_mux_calculate_offsets (GstMetadataMux * filter)
gst_metadata_create_chunks_from_tags (filter);
metadata_lazy_update (&filter->mux_data);
bytes_striped = 0;
bytes_inject = 0;
@ -940,8 +950,6 @@ gst_metadata_mux_calculate_offsets (GstMetadataMux * filter)
}
}
metadata_lazy_update (&filter->mux_data);
if (filter->duration_orig) {
filter->duration = filter->duration_orig;
for (i = 0; i < inject_len; ++i) {
@ -1486,7 +1494,8 @@ inject:
}
if (inject[i].offset_orig >= offset_orig) {
if (inject[i].offset_orig < offset_orig + size_buf_in + striped_bytes) {
if (inject[i].offset_orig <
offset_orig + size_buf_in + striped_bytes - injected_bytes) {
/* insert */
guint32 buf_off =
inject[i].offset_orig - offset_orig - striped_so_far +

3
ext/metadata/gstmetadatamux.h
View file

@ -79,7 +79,6 @@ struct _GstMetadataMux
gboolean iptc;
gboolean xmp;
GstTagList *taglist;
MetaData mux_data;
GstAdapter *adapter_parsing;
GstAdapter *adapter_holding;
@ -99,7 +98,7 @@ struct _GstMetadataMux
gboolean need_more_data;
gboolean need_send_tag; /* demux still need send tags */
GstTagList *taglist;
gboolean need_calculate_offset; /* mux need to calculate offsets of insert chunks */
};

14
ext/metadata/gstmetadataparse.c
View file

@ -280,6 +280,7 @@ gst_metadata_parse_init (GstMetadataParse * filter,
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
metadataparse_xmp_init ();
/* init members */
gst_metadata_parse_init_members (filter);
@ -548,7 +549,10 @@ gst_metadata_parse_dispose (GObject * object)
gst_metadata_parse_dispose_members (filter);
metadataparse_xmp_dispose ();
G_OBJECT_CLASS (metadata_parent_class)->dispose (object);
}
static void
@ -572,11 +576,6 @@ gst_metadata_parse_dispose_members (GstMetadataParse * filter)
filter->adapter_holding = NULL;
}
if (filter->taglist) {
gst_tag_list_free (filter->taglist);
filter->taglist = NULL;
}
if (filter->append_buffer) {
gst_buffer_unref (filter->append_buffer);
filter->append_buffer = NULL;
@ -596,7 +595,6 @@ gst_metadata_parse_init_members (GstMetadataParse * filter)
filter->iptc = TRUE;
filter->xmp = TRUE;
filter->taglist = NULL;
filter->adapter_parsing = NULL;
filter->adapter_holding = NULL;
filter->next_offset = 0;
@ -1471,7 +1469,8 @@ inject:
}
if (inject[i].offset_orig >= offset_orig) {
if (inject[i].offset_orig < offset_orig + size_buf_in + striped_bytes) {
if (inject[i].offset_orig <
offset_orig + size_buf_in + striped_bytes - injected_bytes) {
/* insert */
guint32 buf_off =
inject[i].offset_orig - offset_orig - striped_so_far +
@ -1734,7 +1733,6 @@ gst_metadata_parse_change_state (GstElement * element,
case GST_STATE_CHANGE_NULL_TO_READY:
gst_metadata_parse_init_members (filter);
filter->adapter_parsing = gst_adapter_new ();
filter->taglist = gst_tag_list_new ();
metadata_init (&filter->parse_data, TRUE);
break;
default:

1
ext/metadata/gstmetadataparse.h
View file

@ -81,7 +81,6 @@ struct _GstMetadataParse
gboolean need_send_tag;
GstTagList *taglist;
MetaData parse_data;
GstAdapter *adapter_parsing;
GstAdapter *adapter_holding;

39
ext/metadata/metadataexif.c
View file

@ -64,7 +64,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
}
void
metadatamux_exif_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
GstTagList * taglist)
{
/* do nothing */
@ -202,19 +202,46 @@ exif_content_foreach_entry_func (ExifEntry * entry, void *user_data)
*/
void
metadatamux_exif_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
GstTagList * taglist)
{
if (adapter == NULL)
ExifData *ed = NULL;
GstBuffer *exif_chunk = NULL;
const GValue *val = NULL;
if (!(buf && size))
goto done;
if (*buf) {
g_free (*buf);
*buf = NULL;
}
*size = 0;
if (*adapter)
g_object_unref (*adapter);
val = gst_tag_list_get_value_index (taglist, GST_TAG_EXIF, 0);
if (val) {
exif_chunk = gst_value_get_buffer (val);
if (exif_chunk) {
ed = exif_data_new_from_data (GST_BUFFER_DATA (exif_chunk),
GST_BUFFER_SIZE (exif_chunk));
}
}
if (!ed) {
ed = exif_data_new ();
exif_data_set_data_type (ed, EXIF_DATA_TYPE_COMPRESSED);
exif_data_fix (ed);
}
/* FIXME: consider individual tags */
exif_data_save_data (ed, buf, size);
*adapter = gst_adapter_new ();
done:
if (ed)
exif_data_unref (ed);
return;
}

2
ext/metadata/metadataexif.h
View file

@ -55,7 +55,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping);
extern void
metadatamux_exif_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
GstTagList * taglist);
G_END_DECLS

16
ext/metadata/metadataiptc.c
View file

@ -65,7 +65,7 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
void
metadatamux_iptc_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
GstTagList * taglist)
{
/* do nothing */
@ -132,16 +132,16 @@ iptc_data_foreach_dataset_func (IptcDataSet * dataset, void *user_data)
}
void
metadatamux_iptc_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
GstTagList * taglist)
{
if (adapter == NULL)
if (!(buf && size))
goto done;
if (*adapter)
g_object_unref (*adapter);
*adapter = gst_adapter_new ();
if (*buf) {
g_free (*buf);
*buf = NULL;
}
*size = 0;
done:

2
ext/metadata/metadataiptc.h
View file

@ -55,7 +55,7 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping);
extern void
metadatamux_iptc_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
GstTagList * taglist);
G_END_DECLS

73
ext/metadata/metadatamuxjpeg.c
View file

@ -54,16 +54,49 @@ metadatamux_jpeg_reading (JpegMuxData * jpeg_data, guint8 ** buf,
#define READ(buf, size) ( (size)--, *((buf)++) )
static void
metadatamux_wrap_chunk (MetadataChunk * chunk, guint8 * buf, guint32 buf_size,
guint8 a, guint8 b)
{
guint8 *data = g_new (guint8, 4 + buf_size + chunk->size);
memcpy (data + 4 + buf_size, chunk->data, chunk->size);
g_free (chunk->data);
chunk->data = data;
chunk->size += 4 + buf_size;
data[0] = a;
data[1] = b;
data[2] = (chunk->size - 2) >> 8;
data[3] = (chunk->size - 2) & 0x00FF;
if (buf && buf_size) {
memcpy (data + 4, buf, buf_size);
}
}
void
metadatamux_jpeg_lazy_update (JpegMuxData * jpeg_data)
{
gsize i;
for (i = 0; i < jpeg_data->inject_chunks->len; ++i) {
if (jpeg_data->inject_chunks->chunk[i].type == MD_CHUNK_EXIF &&
jpeg_data->inject_chunks->chunk[i].size > 0) {
/* zero size chunks should be removed before but we check anyway */
if (jpeg_data->inject_chunks->chunk[i].size > 0 &&
jpeg_data->inject_chunks->chunk[i].data) {
switch (jpeg_data->inject_chunks->chunk[i].type) {
case MD_CHUNK_EXIF:
metadatamux_wrap_chunk (&jpeg_data->inject_chunks->chunk[i], NULL, 0,
0xFF, 0xE1);
break;
case MD_CHUNK_XMP:
{
static const char XmpHeader[] = "http://ns.adobe.com/xap/1.0/";
metadatamux_wrap_chunk (&jpeg_data->inject_chunks->chunk[i],
XmpHeader, sizeof (XmpHeader), 0xFF, 0xE1);
}
break;
default:
break;
}
}
}
if (i == jpeg_data->inject_chunks->len) {
@ -181,21 +214,6 @@ metadatamux_jpeg_reading (JpegMuxData * jpeg_data, guint8 ** buf,
mark[1] = READ (*buf, *bufsize);
if (mark[0] == 0xFF) {
if (mark[1] == 0xD9) { /* end of image */
ret = 0;
jpeg_data->state = JPEG_MUX_DONE;
goto done;
} else if (mark[1] == 0xDA) { /* start of scan, lets not look behinf of this */
ret = 0;
jpeg_data->state = JPEG_MUX_DONE;
goto done;
}
if (*bufsize < 2) {
*next_size = (*buf - *next_start) + 2;
ret = 1;
goto done;
}
chunk_size = READ (*buf, *bufsize) << 8;
chunk_size += READ (*buf, *bufsize);
@ -203,27 +221,32 @@ metadatamux_jpeg_reading (JpegMuxData * jpeg_data, guint8 ** buf,
if (mark[1] == 0xE0) { /* may be JFIF */
if (chunk_size >= 16) {
if (*bufsize < 14) {
*next_size = (*buf - *next_start) + 14;
if (*bufsize < 5) {
*next_size = (*buf - *next_start) + 5;
ret = 1;
goto done;
}
if (0 == memcmp (JfifHeader, *buf, 5)) {
jfif_found = TRUE;
/* FIXME: should we fail if not find JFIF */
/* Yes, I think so */
}
} else {
/* FIXME: should we check if the first chunk is EXIF? */
}
}
new_chunk_offset = (*buf - step_buf) + offset - 4; /* maker + size */
if (!jfif_found) {
ret = -1;
goto done;
}
new_chunk_offset = 2;
/* EXIF will always be in the begining */
memset (&chunk, 0x00, sizeof (MetadataChunk));
chunk.offset_orig = new_chunk_offset;
chunk.offset_orig = 2;
chunk.type = MD_CHUNK_EXIF;
metadata_chunk_array_append_sorted (jpeg_data->inject_chunks, &chunk);
@ -232,7 +255,7 @@ metadatamux_jpeg_reading (JpegMuxData * jpeg_data, guint8 ** buf,
/* this acation can be canceled with lazy update if no Exif is add */
memset (&chunk, 0x00, sizeof (MetadataChunk));
chunk.offset_orig = new_chunk_offset;
chunk.offset_orig = 2;
chunk.size = chunk_size + 2; /* chunk size plus app marker */
chunk.type = MD_CHUNK_UNKNOWN;

91
ext/metadata/metadatamuxpng.c
View file

@ -50,14 +50,6 @@ metadatamux_png_reading (PngMuxData * png_data, guint8 ** buf,
guint32 * bufsize, const guint32 offset, const guint8 * step_buf,
guint8 ** next_start, guint32 * next_size);
static int
metadatamux_png_xmp (PngMuxData * png_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
static int
metadatamux_png_jump (PngMuxData * png_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
#define READ(buf, size) ( (size)--, *((buf)++) )
void
@ -78,14 +70,11 @@ metadatamux_png_init (PngMuxData * png_data, GstAdapter ** exif_adpt,
png_data->strip_chunks = strip_chunks;
png_data->inject_chunks = inject_chunks;
metadataparse_xmp_init ();
}
void
metadatamux_png_dispose (PngMuxData * png_data)
{
metadataparse_xmp_dispose ();
png_data->xmp_adapter = NULL;
}
@ -139,16 +128,6 @@ metadatamux_png_parse (PngMuxData * png_data, guint8 * buf,
metadatamux_png_reading (png_data, &buf, bufsize,
offset, step_buf, next_start, next_size);
break;
case PNG_MUX_JUMPING:
ret =
metadatamux_png_jump (png_data, &buf, bufsize, next_start,
next_size);
break;
case PNG_MUX_XMP:
ret =
metadatamux_png_xmp (png_data, &buf, bufsize, next_start,
next_size);
break;
case PNG_MUX_DONE:
goto done;
break;
@ -175,6 +154,7 @@ metadatamux_png_reading (PngMuxData * png_data, guint8 ** buf,
int ret = -1;
guint8 mark[4];
guint32 chunk_size = 0;
MetadataChunk chunk;
static const char XmpHeader[] = "XML:com.adobe.xmp";
@ -196,45 +176,22 @@ metadatamux_png_reading (PngMuxData * png_data, guint8 ** buf,
mark[2] = READ (*buf, *bufsize);
mark[3] = READ (*buf, *bufsize);
if (mark[0] == 'I' && mark[1] == 'E' && mark[2] == 'N' && mark[3] == 'D') {
ret = 0;
png_data->state = PNG_MUX_DONE;
if (!(mark[0] == 'I' && mark[1] == 'H' && mark[2] == 'D' && mark[3] == 'R')) {
ret = -1;
png_data->state = PNG_MUX_NULL;
goto done;
}
if (mark[0] == 'i' && mark[1] == 'T' && mark[2] == 'X' && mark[3] == 't') {
if (chunk_size >= 22) { /* "XML:com.adobe.xmp" plus some flags */
if (*bufsize < 22) {
*next_size = (*buf - *next_start) + 22;
ret = 1;
goto done;
}
if (0 == memcmp (XmpHeader, *buf, 18)) {
MetadataChunk chunk;
/* always inject after first chunk (IHDR) */
memset (&chunk, 0x00, sizeof (MetadataChunk));
chunk.offset_orig = (*buf - step_buf) + offset - 8; /* maker + size */
chunk.size = chunk_size + 12; /* chunk size plus app marker plus crc */
/* 8(header) + 4(size) +4(id) + chunksize + 4(crc) */
chunk.offset_orig = chunk_size + 20;
chunk.type = MD_CHUNK_XMP;
metadata_chunk_array_append_sorted (png_data->strip_chunks, &chunk);
metadata_chunk_array_append_sorted (png_data->inject_chunks, &chunk);
/* if adapter has been provided, prepare to hold chunk */
if (png_data->xmp_adapter) {
*buf += 22; /* jump "XML:com.adobe.xmp" plus some flags */
*bufsize -= 22;
png_data->read = chunk_size - 22; /* four CRC bytes at the end will be jumped after */
png_data->state = PNG_MUX_XMP;
ret = 0;
goto done;
}
}
}
}
/* just set jump sise */
png_data->read = chunk_size + 4; /* four CRC bytes at the end */
png_data->state = PNG_MUX_JUMPING;
png_data->state = PNG_MUX_DONE;
ret = 0;
done:
@ -243,31 +200,3 @@ done:
}
static int
metadatamux_png_jump (PngMuxData * png_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
{
png_data->state = PNG_MUX_READING;
return metadataparse_util_jump_chunk (&png_data->read, buf,
bufsize, next_start, next_size);
}
static int
metadatamux_png_xmp (PngMuxData * png_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
{
int ret;
ret = metadataparse_util_hold_chunk (&png_data->read, buf,
bufsize, next_start, next_size, png_data->xmp_adapter);
if (ret == 0) {
/* jump four CRC bytes at the end of chunk */
png_data->read = 4;
png_data->state = PNG_MUX_JUMPING;
/* if there is a second XMP chunk in the file it will be jumped */
png_data->xmp_adapter = NULL;
}
return ret;
}

3
ext/metadata/metadataparsejpeg.c
View file

@ -91,14 +91,11 @@ metadataparse_jpeg_init (JpegParseData * jpeg_data, GstAdapter ** exif_adpt,
jpeg_data->strip_chunks = strip_chunks;
jpeg_data->inject_chunks = inject_chunks;
metadataparse_xmp_init ();
}
void
metadataparse_jpeg_dispose (JpegParseData * jpeg_data)
{
metadataparse_xmp_dispose ();
jpeg_data->exif_adapter = NULL;
jpeg_data->iptc_adapter = NULL;
jpeg_data->xmp_adapter = NULL;

4
ext/metadata/metadataparsepng.c
View file

@ -78,14 +78,11 @@ metadataparse_png_init (PngParseData * png_data, GstAdapter ** exif_adpt,
png_data->strip_chunks = strip_chunks;
png_data->inject_chunks = inject_chunks;
metadataparse_xmp_init ();
}
void
metadataparse_png_dispose (PngParseData * png_data)
{
metadataparse_xmp_dispose ();
png_data->xmp_adapter = NULL;
}
@ -213,6 +210,7 @@ metadataparse_png_reading (PngParseData * png_data, guint8 ** buf,
memset (&chunk, 0x00, sizeof (MetadataChunk));
chunk.offset_orig = (*buf - step_buf) + offset - 8; /* maker + size */
chunk.size = chunk_size + 12; /* chunk size plus app marker plus crc */
chunk.type = MD_CHUNK_XMP;
metadata_chunk_array_append_sorted (png_data->strip_chunks, &chunk);

27
ext/metadata/metadataxmp.c
View file

@ -75,7 +75,7 @@ metadataparse_xmp_dispose (void)
}
void
metadatamux_xmp_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
GstTagList * taglist)
{
/* do nothing */
@ -247,16 +247,29 @@ metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter)
}
void
metadatamux_xmp_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
GstTagList * taglist)
{
if (adapter == NULL)
GstBuffer *xmp_chunk = NULL;
const GValue *val = NULL;
if (!(buf && size))
goto done;
if (*buf) {
g_free (*buf);
*buf = NULL;
}
*size = 0;
if (*adapter)
g_object_unref (*adapter);
*adapter = gst_adapter_new ();
val = gst_tag_list_get_value_index (taglist, GST_TAG_XMP, 0);
if (val) {
xmp_chunk = gst_value_get_buffer (val);
if (xmp_chunk) {
*size = GST_BUFFER_SIZE (xmp_chunk);
*buf = g_new (guint8, *size);
memcpy (*buf, GST_BUFFER_DATA (xmp_chunk), *size);
}
}
done:

2
ext/metadata/metadataxmp.h
View file

@ -59,7 +59,7 @@ extern gboolean metadataparse_xmp_init (void);
extern void metadataparse_xmp_dispose (void);
extern void
metadatamux_xmp_create_chunk_from_tag_list (GstAdapter ** adapter,
metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
GstTagList * taglist);
G_END_DECLS