+
+
+png_uint_32 PNGAPI
+png_get_compression_buffer_size(png_structp png_ptr)
+{
+ return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
+}
+
+
+#ifndef PNG_1_0_X
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+/* this function was added to libpng 1.2.0 and should exist by default */
+png_uint_32 PNGAPI
+png_get_asm_flags (png_structp png_ptr)
+{
+ return (png_uint_32)(png_ptr? png_ptr->asm_flags : 0L);
+}
+
+/* this function was added to libpng 1.2.0 and should exist by default */
+png_uint_32 PNGAPI
+png_get_asm_flagmask (int flag_select)
+{
+ png_uint_32 settable_asm_flags = 0;
+
+ if (flag_select & PNG_SELECT_READ)
+ settable_asm_flags |=
+ PNG_ASM_FLAG_MMX_READ_COMBINE_ROW |
+ PNG_ASM_FLAG_MMX_READ_INTERLACE |
+ PNG_ASM_FLAG_MMX_READ_FILTER_SUB |
+ PNG_ASM_FLAG_MMX_READ_FILTER_UP |
+ PNG_ASM_FLAG_MMX_READ_FILTER_AVG |
+ PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+ /* no non-MMX flags yet */
+
+#if 0
+ /* GRR: no write-flags yet, either, but someday... */
+ if (flag_select & PNG_SELECT_WRITE)
+ settable_asm_flags |=
+ PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
+#endif /* 0 */
+
+ return settable_asm_flags; /* _theoretically_ settable capabilities only */
+}
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
+
+
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+ /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
+/* this function was added to libpng 1.2.0 */
+png_uint_32 PNGAPI
+png_get_mmx_flagmask (int flag_select, int *compilerID)
+{
+ png_uint_32 settable_mmx_flags = 0;
+
+ if (flag_select & PNG_SELECT_READ)
+ settable_mmx_flags |=
+ PNG_ASM_FLAG_MMX_READ_COMBINE_ROW |
+ PNG_ASM_FLAG_MMX_READ_INTERLACE |
+ PNG_ASM_FLAG_MMX_READ_FILTER_SUB |
+ PNG_ASM_FLAG_MMX_READ_FILTER_UP |
+ PNG_ASM_FLAG_MMX_READ_FILTER_AVG |
+ PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+#if 0
+ /* GRR: no MMX write support yet, but someday... */
+ if (flag_select & PNG_SELECT_WRITE)
+ settable_mmx_flags |=
+ PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
+#endif /* 0 */
+
+ if (compilerID != NULL) {
+#ifdef PNG_USE_PNGVCRD
+ *compilerID = 1; /* MSVC */
+#else
+#ifdef PNG_USE_PNGGCCRD
+ *compilerID = 2; /* gcc/gas */
+#else
+ *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
+#endif
+#endif
+ }
+
+ return settable_mmx_flags; /* _theoretically_ settable capabilities only */
+}
+
+/* this function was added to libpng 1.2.0 */
+png_byte PNGAPI
+png_get_mmx_bitdepth_threshold (png_structp png_ptr)
+{
+ return (png_byte)(png_ptr? png_ptr->mmx_bitdepth_threshold : 0);
+}
+
+/* this function was added to libpng 1.2.0 */
+png_uint_32 PNGAPI
+png_get_mmx_rowbytes_threshold (png_structp png_ptr)
+{
+ return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L);
+}
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
+#endif /* PNG_1_0_X */