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authorEdgard Lima <edgard.lima@indt.org.br>2007-11-02 16:50:42 +0000
committerEdgard Lima <edgard.lima@indt.org.br>2007-11-02 16:50:42 +0000
commitf17824d0d1c0c30815cbcf3bcae7997773e367c5 (patch)
tree39e0b76ca41fae844d906e42bdab3034a3129215 /ext/metadata
parent05e1fdf681397cc6b3f5ed115cf4e3519272f2b2 (diff)
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Added support for PNG/XMP. Indentation. And fixed pull mode to parse the file.
Original commit message from CVS: Added support for PNG/XMP. Indentation. And fixed pull mode to parse the file.
Diffstat (limited to 'ext/metadata')
-rw-r--r--ext/metadata/Makefile.am2
-rw-r--r--ext/metadata/gstmetadataparse.c52
-rw-r--r--ext/metadata/gstmetadataparse.h21
-rw-r--r--ext/metadata/metadataparse.c36
-rw-r--r--ext/metadata/metadataparse.h34
-rw-r--r--ext/metadata/metadataparseexif.c4
-rw-r--r--ext/metadata/metadataparseexif.h10
-rw-r--r--ext/metadata/metadataparseiptc.c4
-rw-r--r--ext/metadata/metadataparseiptc.h7
-rw-r--r--ext/metadata/metadataparsejpeg.c78
-rw-r--r--ext/metadata/metadataparsejpeg.h18
-rw-r--r--ext/metadata/metadataparsepng.c245
-rw-r--r--ext/metadata/metadataparsepng.h81
-rw-r--r--ext/metadata/metadataparseutil.c58
-rw-r--r--ext/metadata/metadataparseutil.h12
-rw-r--r--ext/metadata/metadataparsexmp.c8
-rw-r--r--ext/metadata/metadataparsexmp.h13
17 files changed, 530 insertions, 153 deletions
diff --git a/ext/metadata/Makefile.am b/ext/metadata/Makefile.am
index 88596b42..095a3996 100644
--- a/ext/metadata/Makefile.am
+++ b/ext/metadata/Makefile.am
@@ -4,6 +4,7 @@ libgstmetadata_la_SOURCES = gstmetadata.c \
gstmetadataparse.c \
metadataparse.c \
metadataparsejpeg.c \
+ metadataparsepng.c \
metadataparseexif.c \
metadataparseiptc.c \
metadataparsexmp.c \
@@ -16,6 +17,7 @@ libgstmetadata_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstmetadataparse.h \
metadataparse.h \
metadataparsejpeg.h \
+ metadataparsepng.h \
metadataparseexif.h \
metadataparseiptc.h \
metadataparsexmp.h \
diff --git a/ext/metadata/gstmetadataparse.c b/ext/metadata/gstmetadataparse.c
index cb828f29..be1e0d43 100644
--- a/ext/metadata/gstmetadataparse.c
+++ b/ext/metadata/gstmetadataparse.c
@@ -146,6 +146,8 @@ static gboolean gst_metadata_parse_activate (GstPad * pad);
static gboolean
gst_metadata_parse_element_activate_src_pull (GstPad * pad, gboolean active);
+static gboolean gst_metadata_parse_pull_range_parse (GstMetadataParse * filter);
+
static void gst_metadata_parse_init_members (GstMetadataParse * filter);
static void gst_metadata_parse_dispose_members (GstMetadataParse * filter);
@@ -486,7 +488,7 @@ gst_metadata_parse_dispose_members (GstMetadataParse * filter)
static void
gst_metadata_parse_init_members (GstMetadataParse * filter)
{
- filter->need_send_tag = TRUE;
+ filter->need_send_tag = FALSE;
filter->exif = TRUE;
filter->iptc = TRUE;
filter->xmp = TRUE;
@@ -708,6 +710,7 @@ gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
} else {
filter->state = MT_STATE_PARSED;
filter->need_more_data = FALSE;
+ filter->need_send_tag = TRUE;
}
if (filter->img_type != PARSE_DATA_IMG_TYPE (filter->parse_data)) {
@@ -807,22 +810,14 @@ done:
}
static gboolean
-gst_metadata_parse_activate (GstPad * pad)
+gst_metadata_parse_pull_range_parse (GstMetadataParse * filter)
{
- GstMetadataParse *filter = NULL;
+
+ int res;
gboolean ret = TRUE;
+ guint32 offset = 0;
gint64 duration = 0;
GstFormat format = GST_FORMAT_BYTES;
- int res;
- guint32 offset = 0;
-
- filter = GST_METADATA_PARSE (GST_PAD_PARENT (pad));
-
- if (!gst_pad_check_pull_range (pad) ||
- !gst_pad_activate_pull (filter->sinkpad, TRUE)) {
- /* nothing to be done by now, activate push mode */
- return gst_pad_activate_push (pad, TRUE);
- }
if (!(ret =
gst_pad_query_peer_duration (filter->sinkpad, &format, &duration))) {
@@ -836,7 +831,6 @@ gst_metadata_parse_activate (GstPad * pad)
goto done;
}
- /* try to parse */
do {
GstFlowReturn flow;
GstBuffer *buf = NULL;
@@ -872,6 +866,32 @@ gst_metadata_parse_activate (GstPad * pad)
done:
+ return ret;
+
+}
+
+static gboolean
+gst_metadata_parse_activate (GstPad * pad)
+{
+ GstMetadataParse *filter = NULL;
+ gboolean ret = TRUE;
+
+
+ filter = GST_METADATA_PARSE (GST_PAD_PARENT (pad));
+
+ if (!gst_pad_check_pull_range (pad) ||
+ !gst_pad_activate_pull (filter->sinkpad, TRUE)) {
+ /* nothing to be done by now, activate push mode */
+ return gst_pad_activate_push (pad, TRUE);
+ }
+
+ /* try to parse */
+ if (filter->state == MT_STATE_NULL) {
+ ret = gst_metadata_parse_pull_range_parse (filter);
+ }
+
+done:
+
if (ret) {
gst_pad_activate_pull (pad, FALSE);
gst_pad_activate_push (filter->srcpad, FALSE);
@@ -911,6 +931,10 @@ gst_metadata_parse_element_activate_src_pull (GstPad * pad, gboolean active)
ret = gst_pad_activate_pull (filter->sinkpad, active);
+ if (ret && filter->state == MT_STATE_NULL) {
+ ret = gst_metadata_parse_pull_range_parse (filter);
+ }
+
gst_object_unref (filter);
return ret;
diff --git a/ext/metadata/gstmetadataparse.h b/ext/metadata/gstmetadataparse.h
index 5ae49cb3..eb1f802d 100644
--- a/ext/metadata/gstmetadataparse.h
+++ b/ext/metadata/gstmetadataparse.h
@@ -49,7 +49,6 @@
#include "metadataparse.h"
G_BEGIN_DECLS
-
/* #defines don't like whitespacey bits */
#define GST_TYPE_METADATA_PARSE \
(gst_metadata_parse_get_type())
@@ -61,13 +60,12 @@ G_BEGIN_DECLS
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_METADATA_PARSE))
#define GST_IS_METADATA_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_METADATA_PARSE))
-
-typedef struct _GstMetadataParse GstMetadataParse;
+typedef struct _GstMetadataParse GstMetadataParse;
typedef struct _GstMetadataParseClass GstMetadataParseClass;
-typedef enum _tag_MetadataState {
- MT_STATE_NULL, /* still need to check media type */
- MT_STATE_READING,
+typedef enum _tag_MetadataState
+{
+ MT_STATE_NULL, /* still need to check media type */
MT_STATE_PARSED
} MetadataState;
@@ -85,7 +83,7 @@ struct _GstMetadataParse
GstTagList *taglist;
ParseData parse_data;
- GstAdapter * adapter;
+ GstAdapter *adapter;
guint32 next_offset;
guint32 next_size;
ImageType img_type;
@@ -98,17 +96,14 @@ struct _GstMetadataParse
};
-struct _GstMetadataParseClass
+struct _GstMetadataParseClass
{
GstElementClass parent_class;
};
-extern GType
-gst_metadata_parse_get_type (void);
+extern GType gst_metadata_parse_get_type (void);
-extern gboolean
-gst_metadata_parse_plugin_init (GstPlugin * plugin);
+extern gboolean gst_metadata_parse_plugin_init (GstPlugin * plugin);
G_END_DECLS
-
#endif /* __GST_METADATA_PARSE_H__ */
diff --git a/ext/metadata/metadataparse.c b/ext/metadata/metadataparse.c
index 9c7dfa84..8a16bcf3 100644
--- a/ext/metadata/metadataparse.c
+++ b/ext/metadata/metadataparse.c
@@ -43,9 +43,6 @@
#include "metadataparse.h"
-#include "metadataparsejpeg.h"
-
-
/*
*static declarations
*/
@@ -103,7 +100,9 @@ metadataparse_parse (ParseData * parse_data, const guint8 * buf,
(guint8 *) buf, &bufsize, &next_start, next_size);
break;
case IMG_PNG:
- ret = 0;
+ ret =
+ metadataparse_png_parse (&parse_data->format_data.png,
+ (guint8 *) buf, &bufsize, &next_start, next_size);
break;
default:
/* unexpected */
@@ -131,6 +130,9 @@ metadataparse_dispose (ParseData * parse_data)
case IMG_JPEG:
metadataparse_jpeg_dispose (&parse_data->format_data.jpeg);
break;
+ case IMG_PNG:
+ metadataparse_png_dispose (&parse_data->format_data.png);
+ break;
}
if (parse_data->adpt_xmp) {
@@ -169,13 +171,12 @@ metadataparse_parse_none (ParseData * parse_data, const guint8 * buf,
parse_data->img_type = IMG_NONE;
- if (*bufsize < 4) {
- *next_size = 4;
+ if (*bufsize < 3) {
+ *next_size = 3;
ret = 1;
goto done;
}
- ret = 0;
if (parse_data->option & PARSE_OPT_EXIF)
adpt_exif = &parse_data->adpt_exif;
if (parse_data->option & PARSE_OPT_IPTC)
@@ -186,12 +187,25 @@ metadataparse_parse_none (ParseData * parse_data, const guint8 * buf,
if (buf[0] == 0xFF && buf[1] == 0xD8 && buf[2] == 0xFF) {
metadataparse_jpeg_init (&parse_data->format_data.jpeg, adpt_exif,
adpt_iptc, adpt_xmp);
+ ret = 0;
parse_data->img_type = IMG_JPEG;
- } else if (buf[0] == 0x89 && buf[1] == 0x50 && buf[2] == 0x4e
- && buf[3] == 0x47) {
+ goto done;
+ }
+
+ if (*bufsize < 8) {
+ *next_size = 8;
+ ret = 1;
+ goto done;
+ }
+
+ if (buf[0] == 0x89 && buf[1] == 0x50 && buf[2] == 0x4E && buf[3] == 0x47 &&
+ buf[4] == 0x0D && buf[5] == 0x0A && buf[6] == 0x1A && buf[7] == 0x0A) {
+ metadataparse_png_init (&parse_data->format_data.png, adpt_exif,
+ adpt_iptc, adpt_xmp);
+ ret = 0;
parse_data->img_type = IMG_PNG;
- } else
- ret = -1;
+ goto done;
+ }
done:
diff --git a/ext/metadata/metadataparse.h b/ext/metadata/metadataparse.h
index fde0a8b8..4534f12a 100644
--- a/ext/metadata/metadataparse.h
+++ b/ext/metadata/metadataparse.h
@@ -47,35 +47,41 @@
#include <gst/base/gstadapter.h>
#include "metadataparsejpeg.h"
+#include "metadataparsepng.h"
G_BEGIN_DECLS
-typedef enum _tag_ParseOption {
+typedef enum _tag_ParseOption
+{
PARSE_OPT_EXIF = (1 << 0),
PARSE_OPT_IPTC = (1 << 1),
- PARSE_OPT_XMP = (1 << 2),
- PARSE_OPT_ALL = (1 << 3) -1
+ PARSE_OPT_XMP = (1 << 2),
+ PARSE_OPT_ALL = (1 << 3) - 1
} ParseOption;
-typedef enum _tag_ParseState {
+typedef enum _tag_ParseState
+{
STATE_NULL,
STATE_READING,
STATE_DONE
} ParseState;
-typedef enum _tag_ImageType {
+typedef enum _tag_ImageType
+{
IMG_NONE,
IMG_JPEG,
IMG_PNG
} ImageType;
-
-typedef struct _tag_ParseData {
+typedef struct _tag_ParseData
+{
ParseState state;
- ImageType img_type;
+ ImageType img_type;
ParseOption option;
- union {
+ union
+ {
JpegData jpeg;
+ PngData png;
} format_data;
GstAdapter *adpt_exif;
GstAdapter *adpt_iptc;
@@ -87,8 +93,7 @@ typedef struct _tag_ParseData {
#define set_parse_option(p, m) do { (p).option = (p).option | (m); } while(FALSE)
#define unset_parse_option(p, m) do { (p).option = (p).option & ~(m); } while(FALSE)
-extern void
-metadataparse_init(ParseData *parse_data);
+extern void metadataparse_init (ParseData * parse_data);
/*
* offset: number of bytes to jump (just a hint to jump a chunk)
@@ -98,12 +103,11 @@ metadataparse_init(ParseData *parse_data);
* 1 -> need more data
*/
extern int
-metadataparse_parse(ParseData *parse_data, const guint8 *buf, guint32 bufsize, guint32 * next_offset, guint32 * next_size);
+metadataparse_parse (ParseData * parse_data, const guint8 * buf,
+ guint32 bufsize, guint32 * next_offset, guint32 * next_size);
-extern void
-metadataparse_dispose(ParseData *parse_data);
+extern void metadataparse_dispose (ParseData * parse_data);
G_END_DECLS
-
#endif /* __METADATAPARSE_H__ */
diff --git a/ext/metadata/metadataparseexif.c b/ext/metadata/metadataparseexif.c
index 204319ac..4b7fd4f1 100644
--- a/ext/metadata/metadataparseexif.c
+++ b/ext/metadata/metadataparseexif.c
@@ -65,7 +65,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GST_LOG ("EXIF not defined, here I should send just one tag as whole chunk");
- metadataparse_tag_list_add_chunk (taglist, mode, GST_TAG_EXIF, adapter);
+ metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_EXIF, adapter);
}
@@ -91,7 +91,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
}
/* add chunk tag */
- metadataparse_tag_list_add_chunk (taglist, mode, GST_TAG_EXIF, adapter);
+ metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_EXIF, adapter);
buf = gst_adapter_peek (adapter, size);
diff --git a/ext/metadata/metadataparseexif.h b/ext/metadata/metadataparseexif.h
index 4830e5a3..8c6ecb2c 100644
--- a/ext/metadata/metadataparseexif.h
+++ b/ext/metadata/metadataparseexif.h
@@ -48,13 +48,11 @@
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
+ extern void
+metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
+ GstAdapter * adapter);
-extern void
-metadataparse_exif_tag_list_add (GstTagList *taglist, GstTagMergeMode mode, GstAdapter * adapter);
-
-extern void
-metadataparse_exif_tags_register (void);
+extern void metadataparse_exif_tags_register (void);
G_END_DECLS
-
#endif /* __GST_METADATAPARSE_EXIF_H__ */
diff --git a/ext/metadata/metadataparseiptc.c b/ext/metadata/metadataparseiptc.c
index 3f3e5eab..ed4f803e 100644
--- a/ext/metadata/metadataparseiptc.c
+++ b/ext/metadata/metadataparseiptc.c
@@ -65,7 +65,7 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GST_LOG ("IPTC not defined, here I should send just one tag as whole chunk");
- metadataparse_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC, adapter);
+ metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC, adapter);
}
@@ -89,7 +89,7 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
}
/* add chunk tag */
- metadataparse_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC, adapter);
+ metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC, adapter);
buf = gst_adapter_peek (adapter, size);
diff --git a/ext/metadata/metadataparseiptc.h b/ext/metadata/metadataparseiptc.h
index 29bb559c..e45d350f 100644
--- a/ext/metadata/metadataparseiptc.h
+++ b/ext/metadata/metadataparseiptc.h
@@ -50,11 +50,10 @@
G_BEGIN_DECLS
extern void
-metadataparse_iptc_tag_list_add (GstTagList *taglist, GstTagMergeMode mode, GstAdapter * adapter);
+metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
+ GstAdapter * adapter);
-extern void
-metadataparse_iptc_tags_register (void);
+extern void metadataparse_iptc_tags_register (void);
G_END_DECLS
-
#endif /* __GST_METADATAPARSE_IPTC_H__ */
diff --git a/ext/metadata/metadataparsejpeg.c b/ext/metadata/metadataparsejpeg.c
index 753d436a..1a3acb4b 100644
--- a/ext/metadata/metadataparsejpeg.c
+++ b/ext/metadata/metadataparsejpeg.c
@@ -51,12 +51,6 @@ static int
metadataparse_jpeg_reading (JpegData * jpeg_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
-
-static int
-metadataparse_jpeg_hold_chunk (JpegData * jpeg_data, guint8 ** buf,
- guint32 * bufsize, guint8 ** next_start,
- guint32 * next_size, GstAdapter ** adapter);
-
static int
metadataparse_jpeg_exif (JpegData * jpeg_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
@@ -245,7 +239,9 @@ metadataparse_jpeg_reading (JpegData * jpeg_data, guint8 ** buf,
if (jpeg_data->adpt_xmp) {
if (0 == memcmp (XmpHeader, *buf, 29)) {
- jpeg_data->read = chunk_size - 2;
+ *buf += 29;
+ *bufsize -= 29;
+ jpeg_data->read = chunk_size - 2 - 29;
ret = 0;
jpeg_data->state = JPEG_XMP;
goto done;
@@ -292,43 +288,17 @@ done:
}
static int
-metadataparse_jpeg_hold_chunk (JpegData * jpeg_data, guint8 ** buf,
- guint32 * bufsize, guint8 ** next_start,
- guint32 * next_size, GstAdapter ** adapter)
+metadataparse_jpeg_exif (JpegData * jpeg_data, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
{
int ret;
- if (jpeg_data->read > *bufsize) {
- *next_start = *buf;
- *next_size = jpeg_data->read;
- ret = 1;
- } else {
- GstBuffer *gst_buf;
-
- if (NULL == *adapter) {
- *adapter = gst_adapter_new ();
- }
- gst_buf = gst_buffer_new_and_alloc (jpeg_data->read);
- memcpy (GST_BUFFER_DATA (gst_buf), *buf, jpeg_data->read);
- gst_adapter_push (*adapter, gst_buf);
-
- *next_start = *buf + jpeg_data->read;
- *buf += jpeg_data->read;
- *bufsize -= jpeg_data->read;
+ ret = metadataparse_util_hold_chunk (&jpeg_data->read, buf,
+ bufsize, next_start, next_size, jpeg_data->adpt_exif);
+ if (ret == 0) {
jpeg_data->state = JPEG_READING;
- ret = 0;
}
-
return ret;
-}
-
-static int
-metadataparse_jpeg_exif (JpegData * jpeg_data, guint8 ** buf,
- guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
-{
-
- return metadataparse_jpeg_hold_chunk (jpeg_data, buf,
- bufsize, next_start, next_size, jpeg_data->adpt_exif);
}
@@ -339,7 +309,7 @@ metadataparse_jpeg_iptc (JpegData * jpeg_data, guint8 ** buf,
int ret;
- ret = metadataparse_jpeg_hold_chunk (jpeg_data, buf,
+ ret = metadataparse_util_hold_chunk (&jpeg_data->read, buf,
bufsize, next_start, next_size, jpeg_data->adpt_iptc);
@@ -350,6 +320,8 @@ metadataparse_jpeg_iptc (JpegData * jpeg_data, guint8 ** buf,
unsigned int iptc_len;
int res;
+ jpeg_data->state = JPEG_READING;
+
size = gst_adapter_available (*jpeg_data->adpt_iptc);
buf = gst_adapter_peek (*jpeg_data->adpt_iptc, size);
@@ -383,32 +355,22 @@ static int
metadataparse_jpeg_xmp (JpegData * jpeg_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
{
+ int ret;
- return metadataparse_jpeg_hold_chunk (jpeg_data, buf,
+ ret = metadataparse_util_hold_chunk (&jpeg_data->read, buf,
bufsize, next_start, next_size, jpeg_data->adpt_xmp);
+ if (ret == 0) {
+ jpeg_data->state = JPEG_READING;
+ }
+ return ret;
}
static int
metadataparse_jpeg_jump (JpegData * jpeg_data, guint8 ** buf,
guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
{
- int ret;
-
- if (jpeg_data->read > *bufsize) {
- jpeg_data->read -= *bufsize;
- *next_size = 2;
- *next_start = *buf + *bufsize + jpeg_data->read;
- jpeg_data->read = 0;
- *bufsize = 0;
- jpeg_data->state = JPEG_READING;
- ret = 1;
- } else {
- *next_start = *buf + jpeg_data->read;
- *buf += jpeg_data->read;
- *bufsize -= jpeg_data->read;
- jpeg_data->state = JPEG_READING;
- ret = 0;
- }
- return ret;
+ jpeg_data->state = JPEG_READING;
+ return metadataparse_util_jump_chunk (&jpeg_data->read, buf,
+ bufsize, next_start, next_size);
}
diff --git a/ext/metadata/metadataparsejpeg.h b/ext/metadata/metadataparsejpeg.h
index 67e5ac0e..d7f1660d 100644
--- a/ext/metadata/metadataparsejpeg.h
+++ b/ext/metadata/metadataparsejpeg.h
@@ -48,7 +48,8 @@
G_BEGIN_DECLS
-typedef enum _tag_JpegState {
+typedef enum _tag_JpegState
+{
JPEG_NULL,
JPEG_READING,
JPEG_JUMPING,
@@ -59,7 +60,8 @@ typedef enum _tag_JpegState {
} JpegState;
-typedef struct _tag_JpegData {
+typedef struct _tag_JpegData
+{
JpegState state;
GstAdapter **adpt_exif;
GstAdapter **adpt_iptc;
@@ -69,17 +71,15 @@ typedef struct _tag_JpegData {
extern void
-metadataparse_jpeg_init(JpegData *jpeg_data, GstAdapter **adpt_exif, GstAdapter **adpt_iptc, GstAdapter **adpt_xmp);
+metadataparse_jpeg_init (JpegData * jpeg_data, GstAdapter ** adpt_exif,
+ GstAdapter ** adpt_iptc, GstAdapter ** adpt_xmp);
-extern void
-metadataparse_jpeg_dispose(JpegData *jpeg_data);
+extern void metadataparse_jpeg_dispose (JpegData * jpeg_data);
int
-metadataparse_jpeg_parse(JpegData *jpeg_data, guint8 *buf,
- guint32 *bufsize, guint8 ** next_start,
- guint32 * next_size);
+metadataparse_jpeg_parse (JpegData * jpeg_data, guint8 * buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
G_END_DECLS
-
#endif /* __METADATAPARSE_JPEG_H__ */
diff --git a/ext/metadata/metadataparsepng.c b/ext/metadata/metadataparsepng.c
new file mode 100644
index 00000000..9c3241cf
--- /dev/null
+++ b/ext/metadata/metadataparsepng.c
@@ -0,0 +1,245 @@
+/*
+ * GStreamer
+ * Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
+ * which case the following provisions apply instead of the ones
+ * mentioned above:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "metadataparsepng.h"
+
+#include <string.h>
+
+static int
+metadataparse_png_reading (PngData * png_data, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
+
+static int
+metadataparse_png_xmp (PngData * png_data, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
+
+static int
+metadataparse_png_jump (PngData * png_data, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
+
+#define READ(buf, size) ( (size)--, *((buf)++) )
+
+void
+metadataparse_png_init (PngData * png_data, GstAdapter ** adpt_exif,
+ GstAdapter ** adpt_iptc, GstAdapter ** adpt_xmp)
+{
+ png_data->state = PNG_NULL;
+ png_data->adpt_xmp = adpt_xmp;
+ png_data->read = 0;
+
+ metadataparse_xmp_init ();
+}
+
+void
+metadataparse_png_dispose (PngData * png_data)
+{
+ metadataparse_xmp_dispose ();
+
+ png_data->adpt_xmp = NULL;
+}
+
+int
+metadataparse_png_parse (PngData * png_data, guint8 * buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
+{
+
+ int ret = 0;
+ guint8 mark[8];
+
+ *next_start = buf;
+
+ if (png_data->state == PNG_NULL) {
+
+ if (*bufsize < 8) {
+ *next_size = (buf - *next_start) + 8;
+ ret = 1;
+ goto done;
+ }
+
+ mark[0] = READ (buf, *bufsize);
+ mark[1] = READ (buf, *bufsize);
+ mark[2] = READ (buf, *bufsize);
+ mark[3] = READ (buf, *bufsize);
+ mark[4] = READ (buf, *bufsize);
+ mark[5] = READ (buf, *bufsize);
+ mark[6] = READ (buf, *bufsize);
+ mark[7] = READ (buf, *bufsize);
+
+ if (mark[0] != 0x89 || mark[1] != 0x50 || mark[2] != 0x4E || mark[3] != 0x47
+ || mark[4] != 0x0D || mark[5] != 0x0A || mark[6] != 0x1A
+ || mark[7] != 0x0A) {
+ ret = -1;
+ goto done;
+ }
+
+ png_data->state = PNG_READING;
+
+ }
+
+ while (ret == 0) {
+ switch (png_data->state) {
+ case PNG_READING:
+ ret =
+ metadataparse_png_reading (png_data, &buf, bufsize, next_start,
+ next_size);
+ break;
+ case PNG_JUMPING:
+ ret =
+ metadataparse_png_jump (png_data, &buf, bufsize, next_start,
+ next_size);
+ break;
+ case PNG_XMP:
+ ret =
+ metadataparse_png_xmp (png_data, &buf, bufsize, next_start,
+ next_size);
+ break;
+ case PNG_DONE:
+ goto done;
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+ }
+
+done:
+
+ return ret;
+
+}
+
+
+/* look for markers */
+static int
+metadataparse_png_reading (PngData * png_data, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
+{
+
+ int ret = -1;
+ guint8 mark[4];
+ guint32 chunk_size = 0;
+
+ static const char XmpHeader[] = "XML:com.adobe.xmp";
+
+ *next_start = *buf;
+
+ if (*bufsize < 8) {
+ *next_size = (*buf - *next_start) + 8;
+ ret = 1;
+ goto done;
+ }
+
+ chunk_size = READ (*buf, *bufsize) << 24;
+ chunk_size += READ (*buf, *bufsize) << 16;
+ chunk_size += READ (*buf, *bufsize) << 8;
+ chunk_size += READ (*buf, *bufsize);
+
+ mark[0] = READ (*buf, *bufsize);
+ mark[1] = READ (*buf, *bufsize);
+ 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_DONE;
+ 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 (png_data->adpt_xmp) {
+ if (0 == memcmp (XmpHeader, *buf, 18)) {
+ *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_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_JUMPING;
+ ret = 0;
+
+done:
+
+ return ret;
+
+
+}
+
+static int
+metadataparse_png_jump (PngData * png_data, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
+{
+ png_data->state = PNG_READING;
+ return metadataparse_util_jump_chunk (&png_data->read, buf,
+ bufsize, next_start, next_size);
+}
+
+static int
+metadataparse_png_xmp (PngData * 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->adpt_xmp);
+ if (ret == 0) {
+ /* jump four CRC bytes at the end of chunk */
+ png_data->read = 4;
+ png_data->state = PNG_JUMPING;
+ }
+ return ret;
+
+}
diff --git a/ext/metadata/metadataparsepng.h b/ext/metadata/metadataparsepng.h
new file mode 100644
index 00000000..99f0f7ea
--- /dev/null
+++ b/ext/metadata/metadataparsepng.h
@@ -0,0 +1,81 @@
+/*
+ * GStreamer
+ * Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
+ * which case the following provisions apply instead of the ones
+ * mentioned above:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __METADATAPARSE_PNG_H__
+#define __METADATAPARSE_PNG_H__
+
+#include <gst/base/gstadapter.h>
+
+G_BEGIN_DECLS
+
+typedef enum _tag_PngState
+{
+ PNG_NULL,
+ PNG_READING,
+ PNG_JUMPING,
+ PNG_XMP,
+ PNG_DONE
+} PngState;
+
+
+typedef struct _tag_PngData
+{
+ PngState state;
+ GstAdapter **adpt_xmp;
+ guint32 read;
+} PngData;
+
+
+extern void
+metadataparse_png_init (PngData * png_data, GstAdapter ** adpt_exif,
+ GstAdapter ** adpt_iptc, GstAdapter ** adpt_xmp);
+
+extern void metadataparse_png_dispose (PngData * png_data);
+
+
+int
+metadataparse_png_parse (PngData * png_data, guint8 * buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
+
+G_END_DECLS
+#endif /* __METADATAPARSE_PNG_H__ */
diff --git a/ext/metadata/metadataparseutil.c b/ext/metadata/metadataparseutil.c
index dfab579f..ff1b8826 100644
--- a/ext/metadata/metadataparseutil.c
+++ b/ext/metadata/metadataparseutil.c
@@ -44,8 +44,8 @@
#include "metadataparseutil.h"
void
-metadataparse_tag_list_add_chunk (GstTagList * taglist, GstTagMergeMode mode,
- const gchar * name, GstAdapter * adapter)
+metadataparse_util_tag_list_add_chunk (GstTagList * taglist,
+ GstTagMergeMode mode, const gchar * name, GstAdapter * adapter)
{
GstBuffer *buf;
guint size;
@@ -62,3 +62,57 @@ metadataparse_tag_list_add_chunk (GstTagList * taglist, GstTagMergeMode mode,
}
}
+
+int
+metadataparse_util_hold_chunk (guint32 * read, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start,
+ guint32 * next_size, GstAdapter ** adapter)
+{
+ int ret;
+
+ if (*read > *bufsize) {
+ *next_start = *buf;
+ *next_size = *read;
+ ret = 1;
+ } else {
+ GstBuffer *gst_buf;
+
+ if (NULL == *adapter) {
+ *adapter = gst_adapter_new ();
+ }
+ gst_buf = gst_buffer_new_and_alloc (*read);
+ memcpy (GST_BUFFER_DATA (gst_buf), *buf, *read);
+ gst_adapter_push (*adapter, gst_buf);
+
+ *next_start = *buf + *read;
+ *buf += *read;
+ *bufsize -= *read;
+ *read = 0;
+ ret = 0;
+ }
+
+ return ret;
+}
+
+int
+metadataparse_util_jump_chunk (guint32 * read, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
+{
+ int ret;
+
+ if (*read > *bufsize) {
+ *read -= *bufsize;
+ *next_size = 2;
+ *next_start = *buf + *bufsize + *read;
+ *read = 0;
+ *bufsize = 0;
+ ret = 1;
+ } else {
+ *next_start = *buf + *read;
+ *buf += *read;
+ *bufsize -= *read;
+ *read = 0;
+ ret = 0;
+ }
+ return ret;
+}
diff --git a/ext/metadata/metadataparseutil.h b/ext/metadata/metadataparseutil.h
index 75129843..5d49b54b 100644
--- a/ext/metadata/metadataparseutil.h
+++ b/ext/metadata/metadataparseutil.h
@@ -50,9 +50,15 @@
G_BEGIN_DECLS
extern void
-metadataparse_tag_list_add_chunk (GstTagList * taglist, GstTagMergeMode mode,
- const gchar * name, GstAdapter * adapter);
+metadataparse_util_tag_list_add_chunk (GstTagList * taglist,
+ GstTagMergeMode mode, const gchar * name, GstAdapter * adapter);
+extern int metadataparse_util_hold_chunk (guint32 * read, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size,
+ GstAdapter ** adapter);
-G_END_DECLS
+extern int
+metadataparse_util_jump_chunk (guint32 * read, guint8 ** buf,
+ guint32 * bufsize, guint8 ** next_start, guint32 * next_size);
+G_END_DECLS
#endif /* __GST_METADATAPARSE_UTIL_H__ */
diff --git a/ext/metadata/metadataparsexmp.c b/ext/metadata/metadataparsexmp.c
index 9b583002..aa503d35 100644
--- a/ext/metadata/metadataparsexmp.c
+++ b/ext/metadata/metadataparsexmp.c
@@ -65,7 +65,7 @@ metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GST_LOG ("XMP not defined, here I should send just one tag as whole chunk");
- metadataparse_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
+ metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
}
@@ -111,13 +111,10 @@ metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
}
/* add chunk tag */
- metadataparse_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
+ metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
buf = gst_adapter_peek (adapter, size);
- buf += 29; /* jump "http://ns.adobe.com/xap/1.0/" */
- size -= 29;
-
xmp = xmp_new (buf, size);
if (!xmp)
goto done;
@@ -128,7 +125,6 @@ metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
xmp_serialize (xmp, xmp_str, XMP_SERIAL_ENCODEUTF8, 2);
-
GST_LOG (xmp_string_cstr (xmp_str));
done:
diff --git a/ext/metadata/metadataparsexmp.h b/ext/metadata/metadataparsexmp.h
index 07e34a95..80b93a39 100644
--- a/ext/metadata/metadataparsexmp.h
+++ b/ext/metadata/metadataparsexmp.h
@@ -50,17 +50,14 @@
G_BEGIN_DECLS
extern void
-metadataparse_xmp_tag_list_add (GstTagList *taglist, GstTagMergeMode mode, GstAdapter * adapter);
+metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
+ GstAdapter * adapter);
-extern gboolean
-metadataparse_xmp_init(void);
+extern gboolean metadataparse_xmp_init (void);
-extern void
-metadataparse_xmp_dispose(void);
+extern void metadataparse_xmp_dispose (void);
-extern void
-metadataparse_xmp_tags_register (void);
+extern void metadataparse_xmp_tags_register (void);
G_END_DECLS
-
#endif /* __GST_METADATAPARSE_XMP_H__ */