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fix heif autorotate

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we were not flipping width/height if the image was rotated

thanks leslie-wang
This commit is contained in:
John Cupitt 2019-03-04 15:55:41 +00:00
parent 7ede9de631
commit 27f1d28b61
1 changed files with 85 additions and 15 deletions
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100
libvips/foreign/heifload.c
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@ -259,19 +259,9 @@ vips_foreign_load_heif_set_header( VipsForeignLoadHeif *heif, VipsImage *out )
heif_item_id id[16];
int n_metadata;
struct heif_error error;
/* FIXME .. we always decode to RGB in generate. We should check for
* all grey images, perhaps.
*/
vips_image_pipelinev( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL );
vips_image_init_fields( out,
heif->page_width, heif->page_height * heif->n, bands,
VIPS_FORMAT_UCHAR, VIPS_CODING_NONE, VIPS_INTERPRETATION_sRGB,
1.0, 1.0 );
vips_image_set_int( out, "heif-primary", heif->primary_page );
vips_image_set_int( out, "n-pages", heif->n_top );
vips_image_set_int( out, "page-height", heif->page_height );
VipsAngle angle;
int image_page_width;
int image_page_height;
/* FIXME .. need to test XMP and IPCT.
*/
@ -323,7 +313,7 @@ vips_foreign_load_heif_set_header( VipsForeignLoadHeif *heif, VipsImage *out )
vips_image_set_blob( out, name,
(VipsCallbackFn) NULL, data, length );
if( g_ascii_strcasecmp( type, "exif" ) == 0 )
if( g_ascii_strcasecmp( type, "exif" ) == 0 )
(void) vips__exif_parse( out );
}
@ -384,6 +374,35 @@ vips_foreign_load_heif_set_header( VipsForeignLoadHeif *heif, VipsImage *out )
}
#endif /*HAVE_HEIF_COLOR_PROFILE*/
/* Use the EXIF orientation to swap width/height, if necessary. The
* actual rotation will be done by libheif during decode.
*/
image_page_width = heif->page_width;
image_page_height = heif->page_height;
angle = vips_autorot_get_angle( out );
#ifdef HAVE_EXIF
if( !heif->autorotate ) {
if( angle == VIPS_ANGLE_D90 ||
angle == VIPS_ANGLE_D270 )
VIPS_SWAP( int, image_page_width, image_page_height );
}
else
vips_autorot_remove_angle( out );
#endif /*HAVE_EXIF*/
vips_image_set_int( out, "heif-primary", heif->primary_page );
vips_image_set_int( out, "n-pages", heif->n_top );
vips_image_set_int( out, "page-height", image_page_height );
/* FIXME .. we always decode to RGB in generate. We should check for
* all grey images, perhaps.
*/
vips_image_pipelinev( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL );
vips_image_init_fields( out,
image_page_width, image_page_height * heif->n, bands,
VIPS_FORMAT_UCHAR, VIPS_CODING_NONE, VIPS_INTERPRETATION_sRGB,
1.0, 1.0 );
return( 0 );
}
@ -547,17 +566,68 @@ vips_foreign_load_heif_generate( VipsRegion *or,
*
* FIXME What will this do for RGBA? Or is alpha always
* separate?
*
* If we are missing EXIF support, we won't be able to get
* orientation, so we won't be able to predict the result of
* the rotation, so our width/height are probably wrong.
*/
options = heif_decoding_options_alloc();
#ifdef HAVE_EXIF
options->ignore_transformations = !heif->autorotate;
#endif /*HAVE_EXIF*/
error = heif_decode_image( heif->handle, &heif->img,
heif_colorspace_RGB, heif_chroma_interleaved_24bit,
heif_colorspace_RGB, heif_chroma_interleaved_RGB,
options );
heif_decoding_options_free( options );
if( error.code ) {
vips__heif_error( &error );
return( -1 );
}
#ifdef DEBUG
{
const static enum heif_channel channel[] = {
heif_channel_Y,
heif_channel_Cb,
heif_channel_Cr,
heif_channel_R,
heif_channel_G,
heif_channel_B,
heif_channel_Alpha,
heif_channel_interleaved
};
const static char *channel_name[] = {
"heif_channel_Y",
"heif_channel_Cb",
"heif_channel_Cr",
"heif_channel_R",
"heif_channel_G",
"heif_channel_B",
"heif_channel_Alpha",
"heif_channel_interleaved"
};
int i;
printf( "vips_foreign_load_heif_generate:\n" );
for( i = 0; i < VIPS_NUMBER( channel ); i++ ) {
printf( "\t%s:\n", channel_name[i] );
printf( "\t\twidth = %d\n",
heif_image_get_width( heif->img,
channel[i] ) );
printf( "\t\theight = %d\n",
heif_image_get_height( heif->img,
channel[i] ) );
printf( "\t\tbits = %d\n",
heif_image_get_bits_per_pixel( heif->img,
channel[i] ) );
printf( "\t\thas_channel = %d\n",
heif_image_has_channel( heif->img,
channel[i] ) );
}
}
#endif /*DEBUG*/
}
if( !heif->data )