set basic jxl image metadata from vips
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John Cupitt
parent
e93d0ab83c
commit
b82ca537e7
@ -55,6 +55,15 @@
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#include "pforeign.h"
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/* TODO:
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*
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* - libjxl currently seems to be missing API to attach a profile
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*
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* - libjxl seems to only work in one shot mode, so there's no way to write in
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* chunks
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*
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*/
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#define OUTPUT_BUFFER_SIZE (4096)
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typedef struct _VipsForeignSaveJxl {
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@ -68,8 +77,7 @@ typedef struct _VipsForeignSaveJxl {
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*/
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JxlBasicInfo info;
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JxlColorEncoding color_encoding;
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size_t icc_size;
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uint8_t *icc_data;
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JxlPixelFormat format;
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/* Encoder state.
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*/
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@ -109,9 +117,6 @@ vips_foreign_save_jxl_error( VipsForeignSaveJxl *jxl, const char *details )
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vips_error( class->nickname, "%s", details );
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}
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static JxlPixelFormat vips_foreign_save_jxl_format =
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{3, JXL_TYPE_FLOAT, JXL_NATIVE_ENDIAN, 0};
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static int
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vips_foreign_save_jxl_build( VipsObject *object )
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{
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@ -136,32 +141,120 @@ vips_foreign_save_jxl_build( VipsObject *object )
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return( -1 );
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}
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jxl->info.xsize = save->ready->Xsize;
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jxl->info.ysize = save->ready->Ysize;
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switch( save->ready->BandFmt ) {
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case VIPS_FORMAT_UCHAR:
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jxl->info.bits_per_sample = 8;
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jxl->info.exponent_bits_per_sample = 0;
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jxl->format.data_type = JXL_TYPE_UINT8;
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break;
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case VIPS_FORMAT_USHORT:
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jxl->info.bits_per_sample = 16;
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jxl->info.exponent_bits_per_sample = 0;
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jxl->format.data_type = JXL_TYPE_UINT16;
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break;
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case VIPS_FORMAT_UINT:
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jxl->info.bits_per_sample = 32;
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jxl->info.exponent_bits_per_sample = 0;
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jxl->format.data_type = JXL_TYPE_UINT32;
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break;
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case VIPS_FORMAT_FLOAT:
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jxl->info.bits_per_sample = 32;
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jxl->info.exponent_bits_per_sample = 8;
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jxl->format.data_type = JXL_TYPE_FLOAT;
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break;
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default:
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g_assert_not_reached();
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break;
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}
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switch( save->ready->Type ) {
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case VIPS_INTERPRETATION_B_W:
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case VIPS_INTERPRETATION_GREY16:
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jxl->info.num_color_channels = 1;
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break;
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case VIPS_INTERPRETATION_sRGB:
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case VIPS_INTERPRETATION_scRGB:
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case VIPS_INTERPRETATION_RGB16:
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jxl->info.num_color_channels = 3;
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break;
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default:
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jxl->info.num_color_channels = save->ready->Bands;
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}
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jxl->info.num_extra_channels = VIPS_MAX( 0,
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save->ready->Bands - jxl->info.num_color_channels );
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jxl->info.xsize = save->ready->Xsize;
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jxl->info.ysize = save->ready->Ysize;
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jxl->format.num_channels = save->ready->Bands;
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jxl->format.endianness = JXL_NATIVE_ENDIAN;
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jxl->format.align = 0;
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if( vips_image_hasalpha( save->ready ) ) {
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jxl->info.alpha_bits = jxl->info.bits_per_sample;
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jxl->info.alpha_exponent_bits =
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jxl->info.exponent_bits_per_sample;
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}
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else {
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jxl->info.alpha_exponent_bits = 0;
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jxl->info.alpha_bits = 0;
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}
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if( vips_image_get_typeof( save->ready, "stonits" ) ) {
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double stonits;
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if( vips_image_get_double( save->ready, "stonits", &stonits ) )
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return( -1 );
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jxl->info.intensity_target = stonits;
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}
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/* FIXME libjxl doesn't seem to have this API yet.
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*
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if( vips_image_get_typeof( save->ready, VIPS_META_ICC_NAME ) ) {
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const void *data;
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size_t length;
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if( vips_image_get_blob( save->ready,
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VIPS_META_ICC_NAME, &data, &length ) )
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return( -1 );
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jxl->info.uses_original_profile = JXL_TRUE;
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... attach profile
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}
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else
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jxl->info.uses_original_profile = JXL_FALSE;
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*/
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/* Remove this when libjxl gets API to attach an ICC profile.
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*/
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jxl->info.uses_original_profile = JXL_FALSE;
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if( JxlEncoderSetBasicInfo( jxl->encoder, &jxl->info ) ) {
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vips_foreign_save_jxl_error( jxl, "JxlEncoderSetBasicInfo" );
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return( -1 );
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}
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JxlColorEncodingSetToSRGB( &jxl->color_encoding,
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vips_foreign_save_jxl_format.num_channels < 3 );
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jxl->format.num_channels < 3 );
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if( JxlEncoderSetColorEncoding( jxl->encoder, &jxl->color_encoding ) ) {
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vips_foreign_save_jxl_error( jxl,
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"JxlEncoderSetColorEncoding" );
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return( -1 );
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}
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/* Render the entire image in memory. libjxl seems to be missing
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* tile-based write.
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*/
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if( vips_image_wio_input( save->ready ) )
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return( -1 );
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encoder_options = JxlEncoderOptionsCreate( jxl->encoder, NULL );
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if( JxlEncoderAddImageFrame( encoder_options,
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&vips_foreign_save_jxl_format,
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if( JxlEncoderAddImageFrame( encoder_options, &jxl->format,
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VIPS_IMAGE_ADDR( save->ready, 0, 0 ),
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VIPS_IMAGE_SIZEOF_IMAGE( save->ready ) ) ) {
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vips_foreign_save_jxl_error( jxl, "JxlEncoderAddImageFrame" );
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@ -197,13 +290,18 @@ vips_foreign_save_jxl_build( VipsObject *object )
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return( 0 );
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}
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/* Save a bit of typing.
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*/
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#define UC VIPS_FORMAT_UCHAR
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#define US VIPS_FORMAT_USHORT
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#define UI VIPS_FORMAT_UINT
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#define F VIPS_FORMAT_FLOAT
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/* Type promotion for save ... just always go to uchar.
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/* Type promotion for save ... unsigned ints + float + double.
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*/
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static int bandfmt_jpeg[10] = {
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/* UC C US S UI I F X D DX */
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F, F, F, F, F, F, F, F, F, F
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UC, UC, US, US, UI, UI, F, F, F, F
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};
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static void
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