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Start work on OutputIntent and better color support in PDFio:

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- Add CGATS001-compatible "micro" ICC profile as a standard CMYK color space
  (this is the default used by several Adobe applications)
- Add `PDFIO_CS_CGATS001` color space enum.
- Extend `pdfioArrayCreateColorFromStandard` to support CMYK.
- Extend `pdfioFileCreateImageObjFromFile` to support CMYK JPEG files.
- Update `pdfioFileCreatePage` to add default grayscale, RGB, and CMYK color
  space resources as needed.
This commit is contained in:
Michael R Sweet
2025-04-13 13:31:19 -04:00
parent 3d9c22aa49
commit acd68df592
9 changed files with 577 additions and 13 deletions
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4
pdfio.h
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@@ -46,7 +46,7 @@ extern "C" {
//
# if _WIN32
typedef __int64 ssize_t; // POSIX type not present on Windows... @private@
typedef __int64 ssize_t; // POSIX type not present on Windows @private@
# endif // _WIN32
typedef struct _pdfio_array_s pdfio_array_t;
@@ -62,7 +62,7 @@ typedef bool (*pdfio_error_cb_t)(pdfio_file_t *pdf, const char *message, void *d
typedef enum pdfio_encryption_e // PDF encryption modes
{
PDFIO_ENCRYPTION_NONE = 0, // No encryption
PDFIO_ENCRYPTION_RC4_40, // 40-bit RC4 encryption (PDF 1.3)
PDFIO_ENCRYPTION_RC4_40, // 40-bit RC4 encryption (PDF 1.3, reading only)
PDFIO_ENCRYPTION_RC4_128, // 128-bit RC4 encryption (PDF 1.4)
PDFIO_ENCRYPTION_AES_128, // 128-bit AES encryption (PDF 1.6)
PDFIO_ENCRYPTION_AES_256 // 256-bit AES encryption (PDF 2.0) @exclude all@