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/* decmetadata.c - Extract and decode metadata from the source
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#include <mp4v2/mp4v2.h>
#include "common.h"
void identify_art_type( hb_metadata_t *metadata )
{
typedef struct header_s {
enum arttype type;
char* name; // short string describing name of type
char* data; // header-bytes to match
} header;
// types which may be detected by first-bytes only
static header headers[] = {
{ BMP, "bmp", "\x4d\x42" },
{ GIF87A, "GIF (87a)", "GIF87a" },
{ GIF89A, "GIF (89a)", "GIF89a" },
{ JPG, "JPEG", "\xff\xd8\xff\xe0" },
{ PNG, "PNG", "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a" },
{ TIFFL, "TIFF (little-endian)", "II42" },
{ TIFFB, "TIFF (big-endian)", "MM42" },
{ UNKNOWN } // must be last
};
header* p;
header* found = NULL;
for( p = headers; p->type != UNKNOWN; p++ ) {
header *h = p;
if( metadata->coverart_size < strlen(h->data) )
continue;
if( memcmp(h->data, metadata->coverart, strlen(h->data)) == 0 ) {
metadata->coverart_type = h->type;
break;
}
}
}
static void decmp4metadata( hb_title_t *title )
{
MP4FileHandle input_file;
hb_deep_log( 2, "Got an MP4 input, read the metadata");
input_file = MP4Read( title->dvd, 0 );
if( input_file != MP4_INVALID_FILE_HANDLE )
{
char *value = NULL;
uint8_t *cover_art = NULL;
uint32_t size;
uint32_t count;
/*
* Store iTunes MetaData
*/
if( MP4GetMetadataName( input_file, &value) && value )
{
hb_deep_log( 2, "Metadata Name in input file is '%s'", value);
strncpy( title->metadata->name, value, 255);
MP4Free(value);
value = NULL;
}
if( MP4GetMetadataArtist( input_file, &value) && value )
{
strncpy( title->metadata->artist, value, 255);
MP4Free(value);
value = NULL;
}
if( MP4GetMetadataComposer( input_file, &value) && value )
{
strncpy( title->metadata->composer, value, 255);
MP4Free(value);
value = NULL;
}
if( MP4GetMetadataComment( input_file, &value) && value )
{
strncpy( title->metadata->comment, value, 1024);
value = NULL;
}
if( MP4GetMetadataReleaseDate( input_file, &value) && value )
{
strncpy( title->metadata->release_date, value, 255);
MP4Free(value);
value = NULL;
}
if( MP4GetMetadataAlbum( input_file, &value) && value )
{
strncpy( title->metadata->album, value, 255);
MP4Free(value);
value = NULL;
}
if( MP4GetMetadataGenre( input_file, &value) && value )
{
strncpy( title->metadata->genre, value, 255);
MP4Free(value);
value = NULL;
}
if( MP4GetMetadataCoverArt( input_file, &cover_art, &size, 0) &&
cover_art )
{
title->metadata->coverart = cover_art;
title->metadata->coverart_size = size;
identify_art_type( title->metadata );
hb_deep_log( 2, "Got some cover art of type %d, size %d",
title->metadata->coverart_type,
title->metadata->coverart_size);
}
/*
* Handle the chapters.
*/
MP4Chapter_t *chapter_list = NULL;
uint32_t chapter_count;
MP4GetChapters( input_file, &chapter_list, &chapter_count,
MP4ChapterTypeQt );
if( chapter_list ) {
uint i = 1;
while( i <= chapter_count )
{
hb_chapter_t * chapter;
chapter = calloc( sizeof( hb_chapter_t ), 1 );
chapter->index = i;
chapter->duration = chapter_list[i-1].duration * 90;
chapter->hours = chapter->duration / 90000 / 3600;
chapter->minutes = ( ( chapter->duration / 90000 ) % 3600 ) / 60;
chapter->seconds = ( chapter->duration / 90000 ) % 60;
strcpy( chapter->title, chapter_list[i-1].title );
hb_deep_log( 2, "Added chapter %i, name='%s', dur=%lld, (%02i:%02i:%02i)", chapter->index, chapter->title,
chapter->duration, chapter->hours,
chapter->minutes, chapter->seconds);
hb_list_add( title->list_chapter, chapter );
i++;
}
}
MP4Close( input_file );
}
}
/*
* decmetadata()
*
* Look at the title and extract whatever metadata we can from that title.
*/
void decmetadata( hb_title_t *title )
{
if( !title )
{
return;
}
if( title->metadata )
{
free( title->metadata );
title->metadata = NULL;
}
title->metadata = calloc( sizeof(hb_metadata_t), 1);
if( !title->metadata )
{
return;
}
/*
* Hacky way of figuring out if this is an MP4, in which case read the data using libmp4v2
*/
if( title->container_name && strcmp(title->container_name, "mov,mp4,m4a,3gp,3g2,mj2") == 0 )
{
decmp4metadata( title );
} else {
free( title->metadata );
title->metadata = NULL;
}
}
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