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Configure byte order for EXIF. Fixes #568704
Exif blocks can be in differnt byte orders. Add an element property to select wich one should be written.
This commit is contained in:
Stefan Kost
parent
e4e3b44e04
commit
93df7379e4
4 changed files with 82 additions and 7 deletions
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@ -84,8 +84,6 @@
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#include "gstmetadatamux.h"
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#include "metadataexif.h"
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#include "metadataiptc.h"
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#include "metadataxmp.h"
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@ -104,6 +102,7 @@ enum
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enum
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{
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ARG_0,
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ARG_EXIF_BYTE_ORDER,
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};
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@ -121,6 +120,8 @@ GST_DEBUG_CATEGORY_STATIC (gst_metadata_mux_debug);
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#define GOTO_DONE_IF_NULL_AND_FAIL(ptr, ret) \
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do { if ( NULL == (ptr) ) { (ret) = FALSE; goto done; } } while(FALSE)
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#define DEFAULT_EXIF_BYTE_ORDER GST_META_EXIF_BYTE_ORDER_MOTOROLA
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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@ -292,6 +293,18 @@ gst_metadata_mux_class_init (GstMetadataMuxClass * klass)
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gstbasemetadata_class->sink_event =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_sink_event);
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/**
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* GstMetadataMux:exif-byte-order:
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*
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* Set byte-order for exif metadata writing.
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*
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* Since: 0.10.11
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*/
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g_object_class_install_property (gobject_class, ARG_EXIF_BYTE_ORDER,
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g_param_spec_enum ("exif-byte-order", "Exif byte-order",
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"Byte-order for exif metadata writing", GST_TYPE_META_EXIF_BYTE_ORDER,
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DEFAULT_EXIF_BYTE_ORDER, G_PARAM_READWRITE));
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}
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static void
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@ -299,14 +312,18 @@ gst_metadata_mux_init (GstMetadataMux * filter, GstMetadataMuxClass * gclass)
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{
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gst_base_metadata_set_option_flag (GST_BASE_METADATA (filter),
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META_OPT_EXIF | META_OPT_IPTC | META_OPT_XMP | META_OPT_MUX);
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filter->exif_options.byteorder = DEFAULT_EXIF_BYTE_ORDER;
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}
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static void
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gst_metadata_mux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstMetadataMux *filter = GST_METADATA_MUX (object);
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switch (prop_id) {
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case ARG_EXIF_BYTE_ORDER:
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filter->exif_options.byteorder = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -317,7 +334,11 @@ static void
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gst_metadata_mux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstMetadataMux *filter = GST_METADATA_MUX (object);
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switch (prop_id) {
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case ARG_EXIF_BYTE_ORDER:
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g_value_set_enum (value, filter->exif_options.byteorder);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -400,7 +421,8 @@ gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base)
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if (taglist) {
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if (gst_base_metadata_get_option_flag (base) & META_OPT_EXIF) {
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metadatamux_exif_create_chunk_from_tag_list (&buf, &size, taglist);
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metadatamux_exif_create_chunk_from_tag_list (&buf, &size, taglist,
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&filter->exif_options);
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gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
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MD_CHUNK_EXIF);
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}
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@ -48,6 +48,8 @@
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#include "gstbasemetadata.h"
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#include "metadataexif.h"
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G_BEGIN_DECLS
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/* *INDENT-OFF* */
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@ -75,6 +77,7 @@ typedef struct _GstMetadataMuxClass GstMetadataMuxClass;
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struct _GstMetadataMux
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{
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GstBaseMetadata metadata;
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MetaExifWriteOptions exif_options;
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};
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struct _GstMetadataMuxClass
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@ -69,6 +69,23 @@
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GST_DEBUG_CATEGORY (gst_metadata_exif_debug);
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#define GST_CAT_DEFAULT gst_metadata_exif_debug
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GType
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gst_meta_exif_byte_order_get_type (void)
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{
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static GType meta_exif_byte_order_type = 0;
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static const GEnumValue meta_exif_byte_order[] = {
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{GST_META_EXIF_BYTE_ORDER_MOTOROLA, "Motorola byte-order", "Motorola"},
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{GST_META_EXIF_BYTE_ORDER_INTEL, "Intel byte-order", "Intel"},
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{0, NULL, NULL},
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};
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if (!meta_exif_byte_order_type) {
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meta_exif_byte_order_type =
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g_enum_register_static ("MetaExifByteOrder", meta_exif_byte_order);
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}
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return meta_exif_byte_order_type;
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}
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/*
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* Implementation when libexif isn't available at compilation time
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*/
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@ -95,7 +112,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
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void
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metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
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const GstTagList * taglist)
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const GstTagList * taglist, const MetaExifWriteOptions * opts)
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{
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/* do nothing */
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}
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@ -353,6 +370,7 @@ done:
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* @buf: buffer that will have the created EXIF chunk
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* @size: size of the buffer that will be created
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* @taglist: list of tags to be added to EXIF chunk
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* @opts: write options for exif metadata
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*
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* Get tags from @taglist, create a EXIF chunk based on it and save to @buf.
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* Note: The EXIF chunk is NOT wrapped by any bytes specific to any file format
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@ -362,7 +380,7 @@ done:
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void
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metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
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const GstTagList * taglist)
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const GstTagList * taglist, const MetaExifWriteOptions * opts)
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{
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ExifData *ed = NULL;
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GstBuffer *exif_chunk = NULL;
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@ -387,6 +405,17 @@ metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
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if (!ed) {
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ed = exif_data_new ();
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GST_DEBUG ("setting byteorder %d", opts->byteorder);
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switch (opts->byteorder) {
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case GST_META_EXIF_BYTE_ORDER_MOTOROLA:
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exif_data_set_byte_order (ed, EXIF_BYTE_ORDER_MOTOROLA);
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break;
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case GST_META_EXIF_BYTE_ORDER_INTEL:
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exif_data_set_byte_order (ed, EXIF_BYTE_ORDER_INTEL);
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break;
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default:
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break;
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}
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exif_data_set_data_type (ed, EXIF_DATA_TYPE_COMPRESSED);
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exif_data_fix (ed);
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}
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@ -50,6 +50,27 @@
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G_BEGIN_DECLS
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typedef enum {
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GST_META_EXIF_BYTE_ORDER_MOTOROLA,
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GST_META_EXIF_BYTE_ORDER_INTEL
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} MetaExifByteOrder;
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typedef struct _MetaExifWriteOptions MetaExifWriteOptions;
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/**
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* MetaExifWriteOptions:
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* @byteorder: byte-ordering for exif chunk
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*
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* Options for Exif metadata writing
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*/
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struct _MetaExifWriteOptions
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{
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MetaExifByteOrder byteorder;
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};
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#define GST_TYPE_META_EXIF_BYTE_ORDER (gst_meta_exif_byte_order_get_type())
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GType gst_meta_exif_byte_order_get_type (void);
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/*
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* external function prototypes
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*/
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@ -60,7 +81,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
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extern void
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metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
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const GstTagList * taglist);
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const GstTagList * taglist, const MetaExifWriteOptions *opts);
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G_END_DECLS
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#endif /* __GST_METADATAPARSE_EXIF_H__ */
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