summaryrefslogtreecommitdiff
path: root/hw/xfree86/utils/cvt/cvt.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/xfree86/utils/cvt/cvt.c')
-rw-r--r--hw/xfree86/utils/cvt/cvt.c300
1 files changed, 300 insertions, 0 deletions
diff --git a/hw/xfree86/utils/cvt/cvt.c b/hw/xfree86/utils/cvt/cvt.c
new file mode 100644
index 0000000..fff500b
--- /dev/null
+++ b/hw/xfree86/utils/cvt/cvt.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2005-2006 Luc Verhaegen.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/* Standalone VESA CVT standard timing modelines generator. */
+
+#include "xf86.h"
+
+/* Error implementation used by the server code we built in */
+void
+Error(const char *str)
+{
+ perror(str);
+}
+
+/* FatalError implementation used by the server code we built in */
+void
+FatalError(const char *f, ...)
+{
+ va_list args;
+ va_start(args, f);
+ vfprintf(stderr, f, args);
+ va_end(args);
+ exit(1);
+}
+
+/* xnfalloc implementation used by the server code we built in */
+pointer
+XNFalloc(unsigned long n)
+{
+ pointer r;
+
+ r = malloc(n);
+ if (!r) {
+ perror("malloc failed");
+ exit(1);
+ }
+ return r;
+}
+
+/* xnfcalloc implementation used by the server code we built in */
+pointer
+XNFcalloc(unsigned long n)
+{
+ pointer r;
+
+ r = calloc(1, n);
+ if (!r) {
+ perror("calloc failed");
+ exit(1);
+ }
+ return r;
+}
+
+/*
+ * Quickly check wether this is a CVT standard mode.
+ */
+static Bool
+CVTCheckStandard(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
+ Bool Verbose)
+{
+ Bool IsCVT = TRUE;
+
+ if ((!(VDisplay % 3) && ((VDisplay * 4 / 3) == HDisplay)) ||
+ (!(VDisplay % 9) && ((VDisplay * 16 / 9) == HDisplay)) ||
+ (!(VDisplay % 10) && ((VDisplay * 16 / 10) == HDisplay)) ||
+ (!(VDisplay % 4) && ((VDisplay * 5 / 4) == HDisplay)) ||
+ (!(VDisplay % 9) && ((VDisplay * 15 / 9) == HDisplay)))
+ ;
+ else {
+ if (Verbose)
+ fprintf(stderr, "Warning: Aspect Ratio is not CVT standard.\n");
+ IsCVT = FALSE;
+ }
+
+ if ((VRefresh != 50.0) && (VRefresh != 60.0) &&
+ (VRefresh != 75.0) && (VRefresh != 85.0)) {
+ if (Verbose)
+ fprintf(stderr, "Warning: Refresh Rate is not CVT standard "
+ "(50, 60, 75 or 85Hz).\n");
+ IsCVT = FALSE;
+ }
+
+ return IsCVT;
+}
+
+
+/*
+ * I'm not documenting --interlaced for obvious reasons, even though I did
+ * implement it. I also can't deny having looked at gtf here.
+ */
+static void
+PrintUsage(char *Name)
+{
+ fprintf(stderr, "\n");
+ fprintf(stderr, "usage: %s [-v|--verbose] [-r|--reduced] X Y [refresh]\n",
+ Name);
+ fprintf(stderr, "\n");
+ fprintf(stderr, " -v|--verbose : Warn about CVT standard adherance.\n");
+ fprintf(stderr, " -r|--reduced : Create a mode with reduced blanking "
+ "(default: normal blanking).\n");
+ fprintf(stderr, " X : Desired horizontal resolution "
+ "(multiple of 8, required).\n");
+ fprintf(stderr, " Y : Desired vertical resolution (required).\n");
+ fprintf(stderr, " refresh : Desired refresh rate (default: 60.0Hz).\n");
+ fprintf(stderr, "\n");
+
+ fprintf(stderr, "Calculates VESA CVT (Coordinated Video Timing) modelines"
+ " for use with X.\n");
+}
+
+
+/*
+ *
+ */
+static void
+PrintComment(DisplayModeRec *Mode, Bool CVT, Bool Reduced)
+{
+ printf("# %dx%d %.2f Hz ", Mode->HDisplay, Mode->VDisplay, Mode->VRefresh);
+
+ if (CVT) {
+ printf("(CVT %.2fM",
+ ((float) Mode->HDisplay * Mode->VDisplay) / 1000000.0);
+
+ if (!(Mode->VDisplay % 3) &&
+ ((Mode->VDisplay * 4 / 3) == Mode->HDisplay))
+ printf("3");
+ else if (!(Mode->VDisplay % 9) &&
+ ((Mode->VDisplay * 16 / 9) == Mode->HDisplay))
+ printf("9");
+ else if (!(Mode->VDisplay % 10) &&
+ ((Mode->VDisplay * 16 / 10) == Mode->HDisplay))
+ printf("A");
+ else if (!(Mode->VDisplay % 4) &&
+ ((Mode->VDisplay * 5 / 4) == Mode->HDisplay))
+ printf("4");
+ else if (!(Mode->VDisplay % 9) &&
+ ((Mode->VDisplay * 15 / 9) == Mode->HDisplay))
+ printf("9");
+
+ if (Reduced)
+ printf("-R");
+
+ printf(") ");
+ } else
+ printf("(CVT) ");
+
+ printf("hsync: %.2f kHz; ", Mode->HSync);
+ printf("pclk: %.2f MHz", ((float ) Mode->Clock) / 1000.0);
+
+ printf("\n");
+}
+
+
+/*
+ * Originally grabbed from xf86Mode.c.
+ *
+ * Ignoring the actual Mode->name, as the user will want something solid
+ * to grab hold of.
+ */
+static void
+PrintModeline(DisplayModePtr Mode, int HDisplay, int VDisplay, float VRefresh,
+ Bool Reduced)
+{
+ if (Reduced)
+ printf("Modeline \"%dx%dR\" ", HDisplay, VDisplay);
+ else
+ printf("Modeline \"%dx%d_%.2f\" ", HDisplay, VDisplay, VRefresh);
+
+ printf("%6.2f %i %i %i %i %i %i %i %i", Mode->Clock/1000., Mode->HDisplay,
+ Mode->HSyncStart, Mode->HSyncEnd, Mode->HTotal, Mode->VDisplay,
+ Mode->VSyncStart, Mode->VSyncEnd, Mode->VTotal);
+
+ if (Mode->Flags & V_INTERLACE)
+ printf(" interlace");
+ if (Mode->Flags & V_PHSYNC)
+ printf(" +hsync");
+ if (Mode->Flags & V_NHSYNC)
+ printf(" -hsync");
+ if (Mode->Flags & V_PVSYNC)
+ printf(" +vsync");
+ if (Mode->Flags & V_NVSYNC)
+ printf(" -vsync");
+
+ printf("\n");
+}
+
+
+/*
+ *
+ */
+int
+main (int argc, char *argv[])
+{
+ DisplayModeRec *Mode;
+ int HDisplay = 0, VDisplay = 0;
+ float VRefresh = 0.0;
+ Bool Reduced = FALSE, Verbose = FALSE, IsCVT;
+ Bool Interlaced = FALSE;
+ int n;
+
+ if ((argc < 3) || (argc > 7)) {
+ PrintUsage(argv[0]);
+ return 1;
+ }
+
+ /* This doesn't filter out bad flags properly. Bad flags get passed down
+ * to atoi/atof, which then return 0, so that these variables can get
+ * filled next time round. So this is just a cosmetic problem.
+ */
+ for (n = 1; n < argc; n++) {
+ if (!strcmp(argv[n], "-r") || !strcmp(argv[n], "--reduced"))
+ Reduced = TRUE;
+ else if (!strcmp(argv[n], "-i") || !strcmp(argv[n], "--interlaced"))
+ Interlaced = TRUE;
+ else if (!strcmp(argv[n], "-v") || !strcmp(argv[n], "--verbose"))
+ Verbose = TRUE;
+ else if (!strcmp(argv[n], "-h") || !strcmp(argv[n], "--help")) {
+ PrintUsage(argv[0]);
+ return 0;
+ } else if (!HDisplay) {
+ HDisplay = atoi(argv[n]);
+ if (!HDisplay) {
+ PrintUsage(argv[0]);
+ return 1;
+ }
+ }
+ else if (!VDisplay) {
+ VDisplay = atoi(argv[n]);
+ if (!VDisplay) {
+ PrintUsage(argv[0]);
+ return 1;
+ }
+ }
+ else if (!VRefresh) {
+ VRefresh = atof(argv[n]);
+ if (!VRefresh) {
+ PrintUsage(argv[0]);
+ return 1;
+ }
+ }
+ else {
+ PrintUsage(argv[0]);
+ return 1;
+ }
+ }
+
+ if (!HDisplay || !VDisplay) {
+ PrintUsage(argv[0]);
+ return 0;
+ }
+
+ /* Default to 60.0Hz */
+ if (!VRefresh)
+ VRefresh = 60.0;
+
+ /* Horizontal timing is always a multiple of 8: round up. */
+ if (HDisplay & 0x07) {
+ HDisplay &= ~0x07;
+ HDisplay += 8;
+ }
+
+ if (Reduced) {
+ if ((VRefresh / 60.0) != floor(VRefresh / 60.0)) {
+ fprintf(stderr,
+ "\nERROR: Multiple of 60Hz refresh rate required for "
+ " reduced blanking.\n");
+ PrintUsage(argv[0]);
+ return 0;
+ }
+ }
+
+ IsCVT = CVTCheckStandard(HDisplay, VDisplay, VRefresh, Reduced, Verbose);
+
+ Mode = xf86CVTMode(HDisplay, VDisplay, VRefresh, Reduced, Interlaced);
+
+ PrintComment(Mode, IsCVT, Reduced);
+ PrintModeline(Mode, HDisplay, VDisplay, VRefresh, Reduced);
+
+ return 0;
+}
contact: Jan Huwald // Impressum