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metdata: more logging and code cleanups

Browse source 
Sprinkle more debug log statements into the code. Move some repeaded string
constant into header files and use sizeof instead of manually counted bytes. Add
comments.
This commit is contained in:
Stefan Kost 2009-03-20 15:18:05 +02:00
parent 4b3e2b6e4c
commit 5540ec23ec
7 changed files with 94 additions and 67 deletions
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6
ext/metadata/metadataexif.h
View file

@ -50,6 +50,12 @@
G_BEGIN_DECLS
/*
* defines
*/
#define EXIF_HEADER "Exif\0"
typedef enum {
GST_META_EXIF_BYTE_ORDER_MOTOROLA,
GST_META_EXIF_BYTE_ORDER_INTEL

6
ext/metadata/metadataiptc.h
View file

@ -50,6 +50,12 @@
G_BEGIN_DECLS
/*
* defines
*/
#define PHOTOSHOP_HEADER "Photoshop 3.0"
/*
* external function prototypes
*/

61
ext/metadata/metadatamuxjpeg.c
View file

@ -77,6 +77,7 @@
*/
#include "metadatamuxjpeg.h"
#include "metadataxmp.h"
#include <string.h>
@ -203,12 +204,12 @@ metadatamux_jpeg_parse (JpegMuxData * jpeg_data, guint8 * buf,
{
int ret = META_PARSING_DONE;
guint8 mark[2] = { 0x00, 0x00 };
const guint8 *step_buf = buf;
*next_start = buf;
if (jpeg_data->state == JPEG_MUX_NULL) {
guint8 mark[2];
if (*bufsize < 2) {
GST_INFO ("need more data");
@ -249,9 +250,8 @@ metadatamux_jpeg_parse (JpegMuxData * jpeg_data, guint8 * buf,
}
done:
GST_INFO ("finishing: %d", ret);
return ret;
}
/*
@ -268,46 +268,43 @@ done:
void
metadatamux_jpeg_lazy_update (JpegMuxData * jpeg_data)
{
gint i = 0;
gsize i;
gboolean has_exif = FALSE;
MetadataChunkArray *chunks = jpeg_data->inject_chunks;
while (i < jpeg_data->inject_chunks->len) {
if (jpeg_data->inject_chunks->chunk[i].size > 0 &&
jpeg_data->inject_chunks->chunk[i].data) {
switch (jpeg_data->inject_chunks->chunk[i].type) {
GST_INFO ("checking %d chunks", chunks->len);
for (i = 0; i < chunks->len; ++i) {
GST_INFO ("checking chunk[%" G_GSIZE_FORMAT "], type=%d, len=%u",
i, chunks->chunk[i].type, chunks->chunk[i].size);
if (chunks->chunk[i].size > 0 && chunks->chunk[i].data) {
switch (chunks->chunk[i].type) {
case MD_CHUNK_EXIF:
metadatamux_wrap_chunk (&jpeg_data->inject_chunks->chunk[i], NULL, 0,
0xFF, 0xE1);
metadatamux_wrap_chunk (&chunks->chunk[i], NULL, 0, 0xFF, 0xE1);
has_exif = TRUE;
break;
case MD_CHUNK_IPTC:
#ifdef HAVE_IPTC
{
if (metadatamux_wrap_iptc_with_ps3 (&jpeg_data->inject_chunks->
chunk[i].data, &jpeg_data->inject_chunks->chunk[i].size)) {
metadatamux_wrap_chunk (&jpeg_data->inject_chunks->chunk[i], NULL,
0, 0xFF, 0xED);
if (metadatamux_wrap_iptc_with_ps3 (&chunks->chunk[i].data,
&chunks->chunk[i].size)) {
metadatamux_wrap_chunk (&chunks->chunk[i], NULL, 0, 0xFF, 0xED);
} else {
GST_ERROR ("Invalid IPTC chunk\n");
metadata_chunk_array_remove_by_index (jpeg_data->inject_chunks, i);
metadata_chunk_array_remove_by_index (chunks, i);
continue;
}
}
#endif /* #ifdef HAVE_IPTC */
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],
(guint8 *) XmpHeader, sizeof (XmpHeader), 0xFF, 0xE1);
}
metadatamux_wrap_chunk (&chunks->chunk[i],
(guint8 *) XMP_HEADER, sizeof (XMP_HEADER), 0xFF, 0xE1);
break;
default:
break;
}
}
++i;
}
if (!has_exif) {
@ -392,22 +389,28 @@ metadatamux_jpeg_reading (JpegMuxData * jpeg_data, guint8 ** buf,
mark[0] = READ (*buf, *bufsize);
mark[1] = READ (*buf, *bufsize);
GST_DEBUG ("parsing JPEG marker : 0x%02x%02x", mark[0], mark[1]);
if (mark[0] == 0xFF) {
chunk_size = READ (*buf, *bufsize) << 8;
chunk_size += READ (*buf, *bufsize);
if (mark[1] == 0xE0) { /* may be JFIF */
if (mark[1] == 0xE0) { /* APP0 - may be JFIF */
if (chunk_size >= 16) {
if (*bufsize < 5) {
/* FIXME: whats the 14 ? according to
* http://en.wikipedia.org/wiki/JFIF#JFIF_segment_format
* its the jfif segment without thumbnails
*/
if (chunk_size >= 14 + 2) {
if (*bufsize < sizeof (JfifHeader)) {
GST_INFO ("need more data");
*next_size = (*buf - *next_start) + 5;
*next_size = (*buf - *next_start) + sizeof (JfifHeader);
ret = META_PARSING_NEED_MORE_DATA;
goto done;
}
if (0 == memcmp (JfifHeader, *buf, 5)) {
if (0 == memcmp (JfifHeader, *buf, sizeof (JfifHeader))) {
jfif_found = TRUE;
}
} else {

18
ext/metadata/metadatamuxpng.c
View file

@ -344,15 +344,19 @@ void
metadatamux_png_lazy_update (PngMuxData * png_data)
{
gsize i;
MetadataChunkArray *chunks = png_data->inject_chunks;
for (i = 0; i < png_data->inject_chunks->len; ++i) {
if (png_data->inject_chunks->chunk[i].size > 0 &&
png_data->inject_chunks->chunk[i].data) {
switch (png_data->inject_chunks->chunk[i].type) {
GST_INFO ("checking %d chunks", chunks->len);
for (i = 0; i < chunks->len; ++i) {
GST_INFO ("checking chunk[%" G_GSIZE_FORMAT "], type=%d, len=%u",
i, chunks->chunk[i].type, chunks->chunk[i].size);
if (chunks->chunk[i].size > 0 && chunks->chunk[i].data) {
switch (chunks->chunk[i].type) {
case MD_CHUNK_XMP:
{
metadatamux_wrap_xmp_chunk (&png_data->inject_chunks->chunk[i]);
}
metadatamux_wrap_xmp_chunk (&chunks->chunk[i]);
break;
default:
GST_ERROR ("Unexpected chunk for PNG muxer.");

60
ext/metadata/metadataparsejpeg.c
View file

@ -82,9 +82,12 @@
#include "metadataparsejpeg.h"
#include "metadataparseutil.h"
#include "metadataexif.h"
#include "metadataxmp.h"
#ifdef HAVE_IPTC
#include <libiptcdata/iptc-jpeg.h>
#include "metadataiptc.h"
#endif
/*
@ -226,9 +229,7 @@ metadataparse_jpeg_parse (JpegParseData * jpeg_data, guint8 * buf,
guint32 * bufsize, const guint32 offset, guint8 ** next_start,
guint32 * next_size)
{
int ret = META_PARSING_DONE;
guint8 mark[2] = { 0x00, 0x00 };
const guint8 *step_buf = buf;
/* step_buf holds where buf starts. this const value will be passed to
@ -240,6 +241,7 @@ metadataparse_jpeg_parse (JpegParseData * jpeg_data, guint8 * buf,
*next_start = buf;
if (jpeg_data->state == JPEG_PARSE_NULL) {
guint8 mark[2];
/* only the first time this function is called it will verify the stream
type to be sure it is a JPEG */
@ -259,9 +261,7 @@ metadataparse_jpeg_parse (JpegParseData * jpeg_data, guint8 * buf,
ret = META_PARSING_ERROR;
goto done;
}
jpeg_data->state = JPEG_PARSE_READING;
}
while (ret == META_PARSING_DONE) {
@ -309,9 +309,8 @@ metadataparse_jpeg_parse (JpegParseData * jpeg_data, guint8 * buf,
}
done:
GST_INFO ("finishing: %d", ret);
return ret;
}
/*
@ -389,12 +388,6 @@ metadataparse_jpeg_reading (JpegParseData * jpeg_data, guint8 ** buf,
guint16 chunk_size = 0;
static const char JfifHeader[] = "JFIF";
static const unsigned char ExifHeader[] =
{ 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
#ifdef HAVE_IPTC
static const char PhotoshopHeader[] = "Photoshop 3.0";
#endif
static const char XmpHeader[] = "http://ns.adobe.com/xap/1.0/";
*next_start = *buf;
@ -407,12 +400,14 @@ metadataparse_jpeg_reading (JpegParseData * jpeg_data, guint8 ** buf,
mark[0] = READ (*buf, *bufsize);
mark[1] = READ (*buf, *bufsize);
GST_DEBUG ("parsing JPEG marker : 0x%02x%02x", mark[0], mark[1]);
if (mark[0] == 0xFF) {
if (mark[1] == 0xD9) { /* end of image */
if (mark[1] == 0xD9) { /* EOI - end of image */
ret = META_PARSING_DONE;
jpeg_data->state = JPEG_PARSE_DONE;
goto done;
} else if (mark[1] == 0xDA) {
} else if (mark[1] == 0xDA) { /* SOS - start of scan */
/* start of scan image, lets not look behind of this */
ret = META_PARSING_DONE;
jpeg_data->state = JPEG_PARSE_DONE;
@ -428,30 +423,34 @@ metadataparse_jpeg_reading (JpegParseData * jpeg_data, guint8 ** buf,
chunk_size = READ (*buf, *bufsize) << 8;
chunk_size += READ (*buf, *bufsize);
if (mark[1] == 0xE0) { /* may be JFIF */
if (mark[1] == 0xE0) { /* APP0 - may be JFIF */
if (chunk_size >= 16) {
/* FIXME: whats the 14 ? according to
* http://en.wikipedia.org/wiki/JFIF#JFIF_segment_format
* its the jfif segment without thumbnails
*/
if (chunk_size >= 14 + 2) {
if (*bufsize < 14) {
*next_size = (*buf - *next_start) + 14;
ret = META_PARSING_NEED_MORE_DATA;
goto done;
}
if (0 == memcmp (JfifHeader, *buf, 5)) {
if (0 == memcmp (JfifHeader, *buf, sizeof (JfifHeader))) {
jpeg_data->jfif_found = TRUE;
}
}
} else if (mark[1] == 0xE1) { /* may be it is Exif or XMP */
} else if (mark[1] == 0xE1) { /* APP1 - may be it is Exif or XMP */
if (chunk_size >= 8) { /* size2 'EXIF' 0x00 0x00 */
if (*bufsize < 6) {
*next_size = (*buf - *next_start) + 6;
if (chunk_size >= sizeof (EXIF_HEADER) + 2) {
if (*bufsize < sizeof (EXIF_HEADER)) {
*next_size = (*buf - *next_start) + sizeof (EXIF_HEADER);
ret = META_PARSING_NEED_MORE_DATA;
goto done;
}
if (0 == memcmp (ExifHeader, *buf, 6)) {
if (0 == memcmp (EXIF_HEADER, *buf, sizeof (EXIF_HEADER))) {
MetadataChunk chunk;
if (!jpeg_data->parse_only) {
@ -502,14 +501,14 @@ metadataparse_jpeg_reading (JpegParseData * jpeg_data, guint8 ** buf,
goto done;
}
}
if (chunk_size >= 31) { /* size2 "http://ns.adobe.com/xap/1.0/" */
if (*bufsize < 29) {
*next_size = (*buf - *next_start) + 29;
if (chunk_size >= sizeof (XMP_HEADER) + 2) {
if (*bufsize < sizeof (XMP_HEADER)) {
*next_size = (*buf - *next_start) + sizeof (XMP_HEADER);
ret = META_PARSING_NEED_MORE_DATA;
goto done;
}
if (0 == memcmp (XmpHeader, *buf, 29)) {
if (0 == memcmp (XMP_HEADER, *buf, sizeof (XMP_HEADER))) {
if (!jpeg_data->parse_only) {
@ -527,9 +526,9 @@ metadataparse_jpeg_reading (JpegParseData * jpeg_data, guint8 ** buf,
/* if adapter has been provided, prepare to hold chunk */
if (jpeg_data->xmp_adapter) {
*buf += 29;
*bufsize -= 29;
jpeg_data->read = chunk_size - 2 - 29;
*buf += sizeof (XMP_HEADER);
*bufsize -= sizeof (XMP_HEADER);
jpeg_data->read = chunk_size - 2 - sizeof (XMP_HEADER);
jpeg_data->state = JPEG_PARSE_XMP;
ret = META_PARSING_DONE;
goto done;
@ -550,8 +549,7 @@ metadataparse_jpeg_reading (JpegParseData * jpeg_data, guint8 ** buf,
goto done;
}
if (0 == memcmp (PhotoshopHeader, *buf, 14)) {
if (0 == memcmp (PHOTOSHOP_HEADER, *buf, sizeof (PHOTOSHOP_HEADER))) {
if (!jpeg_data->parse_only) {

5
ext/metadata/metadataparsepng.c
View file

@ -363,6 +363,11 @@ metadataparse_png_reading (PngParseData * png_data, guint8 ** buf,
mark[2] = READ (*buf, *bufsize);
mark[3] = READ (*buf, *bufsize);
/* FIXME: use FOURCECC macros */
GST_DEBUG ("parsing png : 0x%02x%02x%02x%02x",
mark[0], mark[1], mark[2], mark[3]);
if (mark[0] == 'I' && mark[1] == 'E' && mark[2] == 'N' && mark[3] == 'D') {
ret = META_PARSING_DONE;
png_data->state = PNG_PARSE_DONE;

5
ext/metadata/metadataxmp.h
View file

@ -50,6 +50,11 @@
G_BEGIN_DECLS
/*
* defines
*/
#define XMP_HEADER "http://ns.adobe.com/xap/1.0/"
/*
* external function prototypes
*/